WO2018188557A1 - Method and device for selecting target base station and storage medium - Google Patents

Method and device for selecting target base station and storage medium Download PDF

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Publication number
WO2018188557A1
WO2018188557A1 PCT/CN2018/082340 CN2018082340W WO2018188557A1 WO 2018188557 A1 WO2018188557 A1 WO 2018188557A1 CN 2018082340 W CN2018082340 W CN 2018082340W WO 2018188557 A1 WO2018188557 A1 WO 2018188557A1
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Prior art keywords
network slice
slice instance
base station
target base
information
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PCT/CN2018/082340
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French (fr)
Chinese (zh)
Inventor
陈斯
李旭
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华为技术有限公司
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Publication of WO2018188557A1 publication Critical patent/WO2018188557A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H04W36/008357—Determination of target cell based on access point [AP] properties, e.g. AP service capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular, to a method, an apparatus, and a storage medium for selecting a target base station.
  • the terminal of the Long Term Evolution adopts the idea of the terminal assisted network control in the process of the handover between the base stations.
  • the source base station sends the measurement control to the terminal, and the terminal measures the signal quality of the neighboring base station, and The signal quality of each neighboring base station is reported.
  • the source base station determines that the signal quality of the neighboring base station is greater than the signal quality of the source base station according to the signal quality of each neighboring base station reported by the terminal, and the source base station determines that the terminal switches from the source base station to the signal quality.
  • Target base station is the idea of the terminal assisted network control in the process of the handover between the base stations.
  • NFV Network Function Virtualization
  • network functions can be built on common hardware without the need for a dedicated hardware platform.
  • NFV Network Function Virtualization
  • a virtual network built for different network business needs is called a network slice instance.
  • Each network function can be optimized and customized according to network service requirements.
  • Network segmentation instances based on NFV technology can be rapidly deployed as needed to quickly meet the needs of different scenarios.
  • a logic-based resource allocation technique that is, a network slice instance, will be adopted, and is no longer limited to a specific physical resource.
  • the terminal still adopts the strategy in LTE when the terminal switches between the source base station and the target base station, that is, the source base station determines the target base station according to the signal quality of the neighboring base station to implement terminal handover, and thus cannot better adapt to the network slice instance.
  • the source base station determines the target base station according to the signal quality of the neighboring base station to implement terminal handover, and thus cannot better adapt to the network slice instance.
  • An embodiment of the present application provides a method, an apparatus, and a storage medium for selecting a target base station, which are used to select a better target base station for a terminal in a network slice instance application scenario.
  • the embodiment of the present application provides a method for selecting a target base station, where the method includes: if the source base station determines that the terminal needs to perform base station handover, the source base station according to the signal quality of the M neighboring base stations, and the network slice of the M neighboring base stations.
  • the information of the instance, and the information of the network slice instance corresponding to the terminal determine the target base station to be handed over by the M neighboring base stations; where M is a positive integer; wherein the information and the terminal of the network slice instance of the M neighboring base stations
  • the information of each network slice instance in the information of the corresponding network slice instance includes: indication information indicating a service type and a service quality level of the network slice instance indicated by the information of the network slice instance.
  • the target base station is selected to take into account the signal of the neighbor base station.
  • the quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
  • the network slice instance in this embodiment of the present application is a collection of a series of physical and logical resources.
  • the information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station.
  • the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
  • the source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station to be switched by the terminal from the M neighboring base stations.
  • the method further includes: the source base station receiving information of the network slice instance of the M neighboring base stations in a wired or wireless manner; and broadcasting the information of the network slice instance of the source base station in a wired or wireless manner.
  • the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; if the Xn interface between the base stations is not opened, Then, the base station can broadcast the information of its own network slice instance in the air interface. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
  • the information of the network slice instance of the M neighboring base stations in the embodiment of the present application and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include, but are not limited to, indicating the network slice instance.
  • the information indicating the service type and service quality level of the network slice instance indicated by the information may directly include the service type and the service quality level of the network slice instance.
  • the identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
  • N quasi-target base stations in the M neighboring base stations there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: the terminal accesses the quasi-target base station and the access to the current serving base station The performance is better; N is a positive integer not greater than M; the source base station obtains M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal.
  • Determining the target base station to be handed over by the terminal including: if there is no quasi-target base station that matches the information of the network slice instance with the information of the network slice instance corresponding to the terminal, then: for each of the N quasi-target base stations Determining, from the information of the network slice instance included in the quasi-target base station, the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the information of the network slice instance with the highest similarity corresponding to the terminal The similarity of the information of the network slice instance; determining the terminal needs from the N quasi-target base stations according to the similarity degree of each quasi-target base station a target base station of the handover; wherein the similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is a parameter type of a parameter of the network slice instance included in the information of the two network slice instances The parameter value is determined.
  • the network slice instance with the highest similarity can be selected for reconfiguration.
  • the reconfiguration process of the network slice instance changes.
  • the parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
  • the target base station to be handed over by the terminal is determined from the N quasi-target base stations, including: among the N quasi-target base stations The quasi-target base station with the highest similarity is determined as the target base station; after determining the target base station to be handed over by the N quasi-target base stations according to the similarity degree of each quasi-target base station, the method further includes: to N quasi-target base stations The medium-similar target base station sends a network slice instance reconfiguration request.
  • the network slice instance reconfiguration request includes information about the network slice instance corresponding to the terminal. If the network slice instance reconfiguration fails, the N target targets are determined.
  • the quasi-target base station other than the quasi-target base station that has sent the network slice instance reconfiguration request in the base station the quasi-target base station with the highest similarity sends the network slice instance reconfiguration request until receiving the network slice instance reconfiguration success response; Re-determining the target base station corresponding to the received network slice instance reconfiguration success response as the target
  • the network slice instance reconfiguration request is used to reconfigure the network slice instance included in the re-configured network slice instance compatible terminal by the quasi-target base station receiving the network slice instance reconfiguration request. Information about the network slice instance.
  • the terminal is determined from the N quasi-target base stations according to the similarity degree of each quasi-target base station.
  • the target base station to be switched includes: to the N quasi-target base stations: the order of similarity from high to low, the network slice instance reconfiguration request is sent by each of the P target base stations of the previous P bits;
  • the network slice instance reconfiguration request includes information about a network slice instance corresponding to the terminal; P is a positive integer not greater than N; and the network slice instance reconfiguration request is used to enable the target base station to receive the network slice instance reconfiguration request Performing a reconfiguration operation on the network slice instance included in the network, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal; and receiving at least one network slice instance reconfiguration successfully returned by the P target base stations And determining a target base station from the quasi-target base station corresponding to the at least one network slice instance reconfiguration
  • one of the quasi-target base stations receiving the network slice instance reconfiguration success response can be found as the target base station, or in order to improve the reliability, a plurality of target base stations can be found.
  • the target base station is determined from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response, including: To the network slice instance reconfiguration success response returned by each of the L quasi-target base stations in P, the target retargeting base station with the best service performance after terminal access in the L quasi-target base stations is determined as the target Base station; L is a positive integer not greater than P.
  • another optional solution is: if the network slice instance reconfiguration successfully returned by one of the P target base stations is received, the oldest received network slice instance is reconfigured successfully. Responding to the corresponding quasi-target base station as the target base station, and transmitting a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P-1 quasi The target base station cancels the reconfiguration operation on the network slice instance.
  • each of the N quasi-target base stations satisfies the condition that: the terminal access quasi-target base station has better service performance than the access to the current serving base station; N is a positive integer that is not greater than M.
  • the source base station determines the terminal from the M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal.
  • the target base station to be switched includes: if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, the information of the network slice instance and the information of the network slice instance corresponding to the terminal.
  • the matched K quasi-target base stations are determined as target base stations; wherein K is a positive integer not greater than N.
  • the method further includes: the source base station sending a handover request to the target base station; where the handover request includes information about the network slice instance corresponding to the terminal; and the source base station receives a handover response returned by the target base station, where the handover response includes information of the network slice instance to be accessed by the terminal, where the network slice instance indicated by the information of the network slice instance to be accessed is a network slice instance corresponding to the compatible terminal
  • the information is carried by the network slice instance that is carried by the instance. Therefore, the process of the terminal switching to the target base station is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
  • an embodiment of the present application provides an apparatus for selecting a target base station, where the apparatus for selecting a target base station includes a memory, a transceiver, and a processor, where: the memory is used to store an instruction; the processor is configured to execute an instruction stored in the memory, and The control transceiver performs signal reception and signal transmission.
  • the device selecting the target base station is configured to perform the method of any of the first aspect or the first aspect.
  • the embodiment of the present application provides a device for selecting a target base station, which is used to implement any one of the foregoing first aspect or the first aspect, including a corresponding functional module, which is used to implement the steps in the foregoing method. .
  • the embodiment of the present application provides a computer storage medium, where the computer storage medium stores instructions, when the computer is running on the computer, causing the computer to perform the method in the first aspect or any possible implementation manner of the first aspect. .
  • an embodiment of the present application provides a computer program product comprising instructions, when executed on a computer, causing a computer to perform the method of the first aspect or any possible implementation of the first aspect.
  • the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal.
  • Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance.
  • the target base station Since the source base station is a target base station selected according to the signal quality of the M neighboring base stations, the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station is selected to take into account the signal of the neighbor base station.
  • the quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method for selecting a target base station according to an embodiment of the present application
  • 2a is a schematic diagram of information of a network slice instance according to an embodiment of the present disclosure
  • FIG. 2b is a schematic diagram of a network slice instance parameter according to an embodiment of the present application.
  • 2c is a schematic diagram of information about a network slice instance maintained by a base station according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a method for selecting a target base station according to an embodiment of the present disclosure
  • FIG. 2e is a schematic flow chart of a method for selecting a target base station based on FIG. 2d;
  • 2f is a schematic flow chart of a method for selecting a target base station based on FIG. 2d;
  • 2G is a schematic flowchart of a method for selecting a target base station and a terminal handover according to an embodiment of the present application
  • 2h is a schematic flowchart of a method for selecting a target base station and a terminal handover according to an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present application.
  • FIG. 1 shows a schematic architectural diagram of a communication system to which an embodiment of the present application is applied.
  • the communication system 100 can include a terminal 105 and a plurality of base stations.
  • the base station currently accessed by the terminal 105 is referred to as a source base station 101, and the terminal 105 is currently not accessible but acceptable.
  • the base station to the signal is called a neighbor base station, such as the neighbor base station 102, the neighbor base station 103, and the neighbor base station 104.
  • the terminal 105 and the base station can be connected by wireless connection or other means.
  • the source base station may select a target base station for the terminal from the neighboring base station, so that the terminal switches from the source base station to the target base station, thereby providing various services for the terminal through the target base station.
  • a target base station for the terminal from the neighboring base station, so that the terminal switches from the source base station to the target base station, thereby providing various services for the terminal through the target base station.
  • Any one of the source base station, the neighbor base station, and the target base station in the embodiment of the present application may also be referred to as a cell.
  • a terminal a device that provides voice and/or data connectivity to a user, including a wireless terminal.
  • the wireless terminal can be a handheld device with wireless connectivity, or other processing device connected to a wireless modem, and a mobile terminal that communicates with one or more core networks via a wireless access network.
  • the wireless terminal can be a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • the wireless terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • the wireless terminal can be part of a mobile station, an access point, or a user equipment (UE).
  • UE user equipment
  • base station includes but is not limited to a node, a station controller, an access point (AP), or any other type of interface device capable of working in a wireless environment.
  • AP access point
  • FIG. 2 is a schematic flowchart showing a method for selecting a target base station according to an embodiment of the present application.
  • a method for selecting a target base station implemented by a base station side includes:
  • Step 201 if the source base station determines that the terminal needs to perform base station handover, step 202 is performed;
  • Step 202 The source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base stations to be handed over by the M neighboring base stations;
  • the M is a positive integer.
  • the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include but are not limited to: indicating the network slice instance.
  • the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal.
  • Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance.
  • the target base station is selected to take into account the signal of the neighbor base station.
  • the quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
  • NST Network Slice Template
  • NST Network Slice Instance
  • Network Slice Describes the concept of system behavior implemented through network slice instances. It is a conceptual description of the system behavior implemented by the NSI (English can be expressed as Network Sliceis a concept describing a system behaviour which is implemented via Network Slice Instance(s)). The relationship between the network slice and the network slice instance may be 1:R, and R is a positive integer; that is, there are R different network slice instances under the same type of network slice.
  • a network slice instance is a collection of physical and logical resources.
  • the information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station.
  • the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
  • FIG. 2a is a schematic diagram showing information of a network slice instance provided by an embodiment of the present application.
  • the information of the network slice instance includes: a network slice type, a network. Any one of a slice instance identifier (Slice ID), a quality of service class Identifier (QCI), a service type (Service Type), and a slice Instance Parameters (Slice Instance Parameters) or More than one.
  • the information of the network slice instance of the M neighboring base stations in the embodiment of the present application and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include, but are not limited to, indicating the network slice instance.
  • the information indicating the service type and service quality level of the network slice instance indicated by the information may directly include the service type and the service quality level of the network slice instance.
  • the identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
  • Network slice instance Network slice type can include multiple types, such as: Enhanced Mobile Broadband (eMBB), Ultra Reliable & Low Latency Communication (uRLLC), and massive IoT communication (Massive Machine Type Communication, mMTC).
  • eMBB Enhanced Mobile Broadband
  • uRLLC Ultra Reliable & Low Latency Communication
  • mMTC massive IoT communication
  • the network slice type shown in Figure 2a is uRLLC.
  • the ID of the network slice instance used to identify the network slice instance.
  • the identifier of the network slice instance may be a global ID.
  • the network slice instance identified by the identity of the same network slice instance can run on multiple different base stations. For example, the identifier of the network slice instance shown in Figure 2a is 1.
  • Identification of the quality of service level can be binned as needed. For example, the customer's business can be classified according to the needs of the customer or the default service quality level of the slice instance. For example, if the service requires a quality level of 5, the identifier of the service quality level in the information of the network slice instance of the service running the terminal also needs to be level 5. For example, the service quality level of the network slice instance shown in Figure 2a is identified as 5.
  • Service Type A type used to identify the services that the network slice instance can support or run. It is also a global identifier.
  • the service type refers to the type of a service, is a global identifier, and the division of the service type is unique. There may be cases where the service types of the two network slice instances are the same and the service quality levels are different. For example, the service type of the network slice instance shown in Figure 2a is 01 Automatic Drive Type.
  • Parameters of the network slice instance can represent the module name used by each layer of this network slice instance.
  • the Radio Link Control (RLC) layer in the network slice instance may adopt an Unacknowledged Mode (UM) or an Acknowledged Mode (AM) mode.
  • UM Unacknowledged Mode
  • AM Acknowledged Mode
  • the network slice instance parameter of the network slice instance shown in FIG. 2a indicates that the RLC layer adopts UM.
  • FIG. 2b is a schematic diagram showing a network slice instance parameter provided by an embodiment of the present application.
  • three network slice instances are shown, which are respectively a network slice instance 211 and a network slice instance. 212 and network slice instance 213.
  • Each of the network slice instances is shown in Figure 2b in the Packet Data Convergence Protocol (PDCP) layer, the RLC layer, the Medium Access Control (MAC), and the Physical Layer (PHY) layer. parameter.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical Layer
  • the network slice instance 211 includes a Robust Header Compression (ROHC), security, and integrity module at the PDCP layer; UM or AM at the RLC layer; and a MAC layer at the RLC layer.
  • Use algorithm 1. Algorithm 1 guarantees throughput (throput); at the PHY layer, the bandwidth is wide, and the Transmission Time Interval (TTI) is 1 millisecond (ms).
  • TTI Transmission Time Interval
  • RBG Resource Block Group
  • the network slice instance 212 includes the ROHC module at the PDCP layer; UM at the RLC layer; algorithm 2 at the MAC layer, algorithm 2 guarantees throughput (throput or unauthorized transmission grant-free); at the PHY layer
  • the bandwidth is narrow, the TTI is 0.5 ms, and the RBG size is normal.
  • the network slice instance 213 includes a ROHC, security, and integrity module at the PDCP layer; UM or AM at the RLC layer; and algorithm 3 at the MAC layer, and algorithm 3 guarantees throughput ( Throuput), delay or grant-free; at the PHY layer, the bandwidth is narrow, the TTI is 1 ms, and the RBG size is small.
  • the bandwidth in the embodiment of the present application is a wide or narrow concept, which is a relative concept, not a fixed value; for example, a specific value, a wide bandwidth of 40 MHz, and a narrow ( Narrow) is a bandwidth of 10MHz.
  • the size of the RBG in the embodiment of the present application is a large, normal, or small, which is a relative concept, not a fixed value; for example, a specific value, the maximum is 24, Normal is 12 and small is 6.
  • two network slice instances with the same identifier of the network slice instance may be deployed on two different base stations.
  • the parameters of the network slice instance included in the network slice instance with the same identifier of the network slice instance may be the same or different.
  • the source base station may determine, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, that the terminal needs to be switched from the M neighboring base stations.
  • the method further includes: the source base station receiving information of the network slice instance of the M neighbor base stations by using a wired or wireless manner; and broadcasting the information of the network slice instance of the source base station by using a wired or wireless manner.
  • the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; If the Xn interface is not enabled, the base station can broadcast the information of its own network slice instance. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
  • each base station can maintain a table of information for a network slice instance.
  • FIG. 2 is a schematic diagram showing information of a network slice instance maintained by a base station according to an embodiment of the present application.
  • the first column in the table is a base station identifier, and may be filled in a neighboring base station of the base station.
  • the information of the network slice instance may include the network slice type, the identifier of the network slice instance, the identifier of the service quality level, the service type, and the network slice instance. Any one or more of the parameters.
  • the base station identifier shown in FIG. 2c may also be identified as a cell identifier (cell ID), and the cell identifier (cell ID) is a global ID, in a public land mobile network.
  • PLMN Public Land Mobile Network
  • FIG. 2d is a schematic flowchart showing a method for selecting a target base station according to an embodiment of the present application. As shown in FIG. 2d, the method includes:
  • Step 221 Each of the neighboring base station and the source base station broadcasts information of its own network slice instance; this step may be performed at any step before step 226, and does not have to be placed before step 222. That is to say, in the embodiment of the present application, the broadcast is a "periodic broadcast", and the latest slice information of the current base station is periodically broadcast to the neighboring base station on a time scale, which is not limited to the sequence of steps.
  • the source base station makes a handover decision, only the currently obtained neighbor base station slice information is used as a judgment basis.
  • Step 222 The source base station sends measurement control to the terminal.
  • Step 223 The terminal performs the measurement, and obtains the measurement result.
  • the terminal performs the related measurement according to the measurement configuration message in the measurement control sent by the base station, and reports the measurement result to the base station.
  • the terminal measurement result may include, but is not limited to, the signal quality of the neighboring base station and the source base station, such as Reference Signal Receiving Power (RSRP) and Reference Signal Receiving Quality (RSRQ);
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • Step 224 The terminal reports the measured measurement result to the source base station.
  • Step 225 the source base station determines whether the terminal needs to perform handover according to the measurement result; if not, the current process is terminated, that is, the terminal continues to remain at the source base station; if necessary, step 226 is performed;
  • Step 226, the source base station performs determining the target base station from the neighboring base stations of the source base station;
  • step 227 the terminal performs a handover procedure to cause the terminal to handover to the target base station.
  • the source base station determines whether to trigger the handover of the terminal according to the measurement result. Specifically, how to determine that there are multiple solutions, the embodiment of the present application provides the following examples, such as the example a1 to the example a7, to determine the handover of the terminal to be triggered.
  • the embodiments of the present application are versatile: the signal quality still needs to be considered, and the 5G network slice is extended by the LTE carrier aggregation technology, that is, the same UE accesses the same slice instance, and may be allocated to different frequency bands according to the resource scheduling policy.
  • Carrier frequency
  • the same network slice instance of the neighboring base station can be deployed in different carrier frequency bands. This means that if the terminal is subordinate to a certain network slice instance and the service is not interrupted, switching from one base station to another, the operating frequency may change.
  • Example a1 The quality of the signal of the source base station (the terminal works on a certain carrier) is good, for example, higher than the preset signal quality threshold, that is, the service performance of the terminal acquired at the source base station is good, but when the frequency priority is switched,
  • the terminal's standard defines that working in a certain frequency band is more energy efficient/efficient, and may trigger the measurement and switching of the different frequency (the same slice instance different carriers).
  • Example a2 The quality of the signal of the source base station (the terminal works on a certain carrier) is not good, such as lower than the preset signal quality threshold, that is, the service performance of the terminal acquired at the source base station is not good, but when it is in the frequency priority
  • the terminal's standard defines that working in a certain frequency band is more energy-efficient/efficient, and may trigger measurement and switching of different frequencies (same carrier example different carriers).
  • Example a3 The quality of the signal of the source base station (the terminal works on a certain carrier) is not good, such as lower than the preset signal quality threshold, that is, the service performance of the terminal acquired at the source base station is not good, but if the signal of the neighboring base station is The quality (the terminal works on a certain carrier) is higher than the preset signal quality threshold, and it is determined that the terminal needs to be switched.
  • Example a4 When the signal quality of the neighboring base station (the same slice instance different carrier) is higher than a certain threshold, the source base station triggers a handover (to the same slice instance different carrier) request, that is, determines that the terminal needs to perform handover.
  • the source base station when the signal quality of the source base station is lower than a certain threshold, and the signal quality of the neighboring base station (the same slice instance different carrier) is higher than a certain threshold, the source base station triggers a handover (to the same slice instance different carrier) request, that is, determines the terminal. Need to switch.
  • the source base station triggers the handover (the same service quality type with the service type), that is, the terminal needs to perform the handover. That is, it is determined that the terminal needs to be switched.
  • the VoIP service of the Enhanced Mobile Internet Broadband (eMBB) network slice is taken as an example.
  • LTE as a different system can be regarded as another network slice for the 5G network.
  • the signal quality of the source base station is lower than a certain threshold, and the signal quality of the neighboring base station of the different system (the same service type, the same service quality level) is higher than a certain threshold, and the source base station triggers the handover (the same service quality as the service type of the different system) Level) request, that is, determine that the terminal needs to switch.
  • the base station can determine whether the terminal needs to be switched through multiple decision schemes.
  • signal quality priority considering signal quality priority and frequency priority, respectively, in the case of signal quality priority. If the signal quality of the neighboring base station is higher than that of the source base station, it is determined that the terminal needs to perform handover.
  • frequency priority if the signal quality of the neighboring base station is lower than that of the source base station, the inter-frequency measurement is still started.
  • the terminal if it is determined that the terminal needs to be handed over, there must be N quasi-target base stations among the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: terminal access
  • the quasi-target base station performs better than the service obtained by accessing the current serving base station.
  • the neighboring base station whose signal quality is higher than the source base station in the neighboring base station may be determined as the quasi-target base station.
  • the neighbor base station on the particular frequency band in which the required network slice instance operates may be determined as the quasi-target base station.
  • the quasi-target base station that matches the information of the network slice instance corresponding to the terminal is searched from the quasi-target base station, and if there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, For the reconfiguration of the network sharding instance, an alternative solution is to find a base station as the target base station from the neighboring base stations with better service performance.
  • Other embodiments are provided in the embodiments of the present application, which are described in detail below.
  • each of the N quasi-target base stations satisfies the condition that: the terminal access quasi-target base station has better service performance than the access to the current serving base station; N is a positive integer not greater than M.
  • the source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base stations to be handed over by the M neighboring base stations, including: If there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then: for each of the N quasi-target base stations, from the information of the network slice instance included in the quasi-target base station Determining: the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the similarity between the information of the network slice instance with the highest similarity and the information of the network slice instance corresponding to the terminal; The similarity of the target base station, the target base station to be switched by the terminal is determined from the N quasi-target base stations; wherein the similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is based
  • the network slice instance with the highest similarity can be selected for reconfiguration.
  • the reconfiguration process of the network slice instance changes.
  • the parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
  • the terminal when determining that the terminal needs to perform handover, it may first determine whether there is a neighboring base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, and if yes, determine the neighboring base station with better service performance among the neighboring base stations. For the target base station.
  • determining a parameter type in a parameter of a network slice instance included in two network slice instances to be calculated such as a type of a module included in each layer in FIG. 2b.
  • the PDCP layer includes three modules, and the PDCP layer in the network slice instance 212 includes one module; and the parameters of the network slice instance included in the two network slice instances to be calculated are also determined.
  • the parameter value in the network such as the PHY layer TTI in the network slice instance 211 in FIG. 2b is 1 ms, and the PHY layer TTI in the network slice instance 212 is 0.5 ms.
  • the target base station to be switched by the terminal is determined from the N quasi-target base stations, and there are various schemes, for example, FIG. 2e provides a selection target based on FIG. 2d.
  • FIG. 2e provides a selection target based on FIG. 2d.
  • Step 251 The source base station sends a network slice instance reconfiguration request to the quasi-target base station.
  • Step 252 After the network segment instance reconfiguration is performed, the quasi-target base station is divided into two cases. If the first configuration is successful, the network node instance reconfiguration success response may be fed back to the source base station, and the second configuration fails. The network slice instance reconfiguration failure response may be fed back to the source base station, or no information is fed back, and the source base station does not receive the response message within the preset time period, that is, determines that the reconfiguration fails;
  • Step 253 The source base station may determine the target base station from among several quasi-target base stations that receive the network slice instance reconfiguration success response.
  • FIG. 2f is a schematic flowchart of a method for selecting a target base station based on FIG. 2d. As shown in FIG. 2f, step 226 of determining a target base station is implemented by using the following method flow:
  • Step 261 The source base station sends a network slice instance reconfiguration request to the MME.
  • Step 262 The MME transparently transmits a network slice instance reconfiguration request to the quasi-target base station.
  • Step 263 After the network segment instance reconfiguration is performed, the quasi-target base station may be divided into two cases. If the first configuration is successful, the network slice instance reconfiguration success response may be fed back to the MME, and the second configuration fails. Feeding back to the MME a network slice instance reconfiguration failure response, or not feeding back any information;
  • Step 264 If the MME receives the response information, the MME may retransmit the received network slice instance reconfiguration success response or the network slice instance reconfiguration failure response to the source base station.
  • Step 253 The source base station may determine the target base station from the several quasi-target base stations that receive the network slice instance reconfiguration success response. In another case, the source base station does not receive the response message within the preset duration, that is, the weight is determined. Configuration failed.
  • the target base station to be handed over by the terminal is determined from the N quasi-target base stations according to the similarity degree of each quasi-target base station, including: among the N quasi-target base stations: the highest similarity
  • the quasi-target base station is determined as the target base station; after determining the target base station to be handed over by the N quasi-target base stations according to the similarity degree of each quasi-target base station, the method further includes: the highest similarity to the N quasi-target base stations
  • the quasi-target base station sends a network slice instance reconfiguration request; wherein the network slice instance reconfiguration request includes information about the network slice instance corresponding to the terminal; if it is determined that the network slice instance reconfiguration fails, the N target base stations are removed.
  • the quasi-target base station with the highest similarity transmits the network slice instance reconfiguration request until receiving the network slice instance reconfiguration success response; the received The network slice instance reconfiguration success response corresponding to the quasi-target base station is re-determined as the target base station;
  • the network segment instance reconfiguration request is used to reconfigure the network slice instance included by the quasi-target base station that receives the network slice instance reconfiguration request, so that the reconfigured network slice instance is compatible with the network slice instance corresponding to the terminal.
  • Information. Reconfiguration will select the network slice instance operation with the highest similarity, which can increase the rate of reconfiguration. For example, the size of the TTI is adjusted from 1ms to 0.9ms. This action is for the air interface of the base station, in the case of hardware environment support, this It's just a modification of the software parameter configuration, very fast, and the time is negligible.
  • the source base station sends a network slice instance reconfiguration request to the quasi-target base station 1 to enable the quasi-target base station 1 to reconfigure the network slice instance with the highest information similarity of the network slice instance corresponding to the terminal. If it is determined that the network slice instance reconfiguration fails, for example, the network slice instance reconfiguration failure response is received or the network slice instance reconfiguration success response is not received within the preset time period, the network slice is sent to the N quasi-target base stations.
  • the quasi-target base station with the highest similarity transmits a network slice instance reconfiguration request, that is, sends a network slice instance reconfiguration request to the quasi-target base station 2, if the quasi-target base station 2 If the reconfiguration is successful, the quasi-target base station 2 is determined as the target base station. If the quasi-target base station 2 also fails to reconfigure, the network slice instance reconfiguration request is continued to be sent to the quasi-target base station 3. If the quasi-target base station 3 is successfully reconfigured, the quasi-target base station 3 is determined as the target base station. If the quasi-target base station 3 also fails to reconfigure, it is determined that the target base station is not available, and the flow is ended.
  • the terminal is determined from the N quasi-target base stations according to the similarity degree of each quasi-target base station.
  • the target base station to be switched includes: to the N quasi-target base stations: the order of similarity from high to low, the network slice instance reconfiguration request is sent by each of the P target base stations of the previous P bits;
  • the network slice instance reconfiguration request includes information about a network slice instance corresponding to the terminal; P is a positive integer not greater than N; and the network slice instance reconfiguration request is used to enable the target base station to receive the network slice instance reconfiguration request Performing a reconfiguration operation on the network slice instance included in the network, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal; and receiving at least one network slice instance reconfiguration successfully returned by the P target base stations And determining a target from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success
  • one of the quasi-target base stations receiving the network slice instance reconfiguration success response can be found as the target base station, or in order to improve the reliability, a plurality of target base stations can be found.
  • the target base station is determined from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response, including: To the network slice instance reconfiguration success response returned by each of the L quasi-target base stations in P, the target retargeting base station with the best service performance after terminal access in the L quasi-target base stations is determined as the target Base station; L is a positive integer not greater than P.
  • another optional solution is: if the network slice instance reconfiguration successfully returned by one of the P target base stations is received, the oldest received network slice instance is reconfigured successfully. Responding to the corresponding quasi-target base station as the target base station, and transmitting a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P-1 quasi The target base station cancels the reconfiguration operation on the network slice instance. Specifically, the source base station sends a network slice instance reconfiguration request to the plurality of quasi-target base stations, and upon receiving a network slice instance reconfiguration success response, the network slice instance reconfiguration success response is the received first network slice.
  • the instance reconfiguration succeeds in response, indicating that the network segment instance reconfiguration success response corresponding to the quasi-target base station has a short delay, and the quasi-target base station corresponding to the network slice instance reconfiguration success response is determined as the target base station. In this way, the remaining P-1 quasi-target base stations can be avoided to be reconfigured, thereby saving network resource consumption.
  • the network slice instance reconfiguration success response includes the information of the network slice instance after the reconfiguration; wherein the network slice instance indicated by the information of the network slice instance after the reconfiguration is compatible with the network slice instance corresponding to the terminal The service carried by the network slice instance indicated by the information; the network slice instance reconfiguration success response is obtained after the target base station reconfigures the existing network slice instance of the base station.
  • the reconfigured network slice instance can not only run the service that is run before the network slice instance is reconfigured, but also The information of the network slice instance corresponding to the terminal can be compatible, and the service supported by the network slice instance corresponding to the terminal can be run.
  • the identifier of the network slice instance that is reconfigured on the quasi-target base station may be changed, for example, changed to the same as the identifier of the network slice instance corresponding to the terminal, or may not be changed.
  • the terminal access quasi-target base station has better service performance than the access to the current serving base station; N is not a positive integer greater than M; the source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the terminal needs to be switched from the M neighboring base stations.
  • the target base station includes: if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, then: K matching the information of the network slice instance with the information of the network slice instance corresponding to the terminal.
  • the quasi-target base stations are determined as target base stations; wherein K is a positive integer not greater than N.
  • the source base station may further send a handover request to the target base station; where the handover request includes information about the network slice instance corresponding to the terminal; and the source base station receives the handover returned by the target base station.
  • the information of the network slice instance to be accessed by the terminal where the network segment instance indicated by the information of the network slice instance to be accessed is indicated by the information of the network slice instance corresponding to the compatible terminal.
  • the service carried by the network slice instance Therefore, the process of the terminal switching to the target base station is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
  • FIG. 2g is a schematic flowchart showing a method for selecting a target base station and a terminal handover according to an embodiment of the present application. As shown in FIG. 2g, the method includes:
  • Step 271 The source base station sends a handover request to the target base station.
  • the handover request may include information about the network slice instance corresponding to the terminal, so that the information about the network slice required by the target base station may be notified, so that the target base station accurately finds the terminal.
  • the handover request may further include a Radio Resource Control (RRC) context, such as a terminal capability, a current access stratum (AS) configuration, and a specific wireless of the terminal. Resource management information and the like; wherein the information of the network slice instance does not necessarily include the identifier of the network slice instance, for example, different network slice instances support one service set, and the same service may run on different network slice instances;
  • RRC Radio Resource Control
  • AS current access stratum
  • Step 272 The target base station performs a resource establishment process.
  • the resource establishment process includes, but is not limited to, allocating required resources, such as spectrum resources, computing, and storage resources, to the terminal.
  • Step 273 The target base station returns a handover request response to the source base station, where the handover request response may include an RRC connection reconfiguration message mobility control message (such as a target cell identifier and a frequency to be accessed by the terminal), and a general radio resource configuration message (such as a message requesting random access) and a dedicated radio resource configuration, a security configuration, and a Cell Radio Network Temporary Identifier (C-RNTI) (ie, a radio network temporary identifier (RNTI) used when the UE is in a certain cell Radio Network Tempory Identity, RNTI)).
  • C-RNTI Cell Radio Network Temporary Identifier
  • the handover request response further includes information such as a service type and a service quality level of the network slice instance.
  • Step 274 The source base station sends a handover command to the terminal, and the source base station may transparently forward the received handover request response to the terminal.
  • Step 275 the step may be an optional step of performing state transition between the source base station and the target base station; for the bearer requiring sequential packet delivery, the state transition message provides a sequence number and a hyper frame number (HFN) (HFN) To limit the number of bits of the transmission sequence number on the air interface, the target base station shall assign them to the first packet that must be transmitted without assigning a sequence number.
  • HFN hyper frame number
  • the source serving base station freezes its transmitter/receiver state, that is, stops allocating the PDCP sequence number (SN) to the downlink packet, and stops sending the uplink packet to the core network;
  • Step 276 The terminal sends an instruction to complete the handover to the target base station.
  • the instruction for completing the handover specifically refers to a process in which the terminal and the target base station complete radio resource control (RRC) connection reconfiguration and random access.
  • RRC radio resource control
  • Step 277 The target base station sends a path transfer request to the MME:
  • Step 278 The MME sends a path transfer request response to the target base station.
  • Step 279 The target base station sends an instruction for releasing the resource to the source base station, so that the resources of the source base station are released.
  • FIG. 2h is a schematic flowchart of a method for selecting a target base station and a terminal handover according to an embodiment of the present application. As shown in FIG. 2h, step 227 of determining a target base station is implemented by using the following method flow:
  • Step 281 The source base station sends a handover request to the MME.
  • the handover request may include information about the network slice instance corresponding to the terminal, so that the information about the network slice required by the target base station may be notified, so that the target base station can accurately find the terminal.
  • the network slice instance of the access optionally, the handover request may further include a Radio Resource Control (RRC) context, such as a terminal capability, a current AS configuration, and specific radio resource management information of the terminal, and the like;
  • RRC Radio Resource Control
  • the information of the slice instance does not necessarily include the identifier of the network slice instance. For example, different network slice instances support one service set, and the same service can run on different network slice instances.
  • Step 282 The MME transparently transmits a handover request to the target base station.
  • Step 283 The target base station performs a resource establishment process.
  • the resource establishment process includes, but is not limited to, allocating required resources, such as spectrum resources, computing, and storage resources, to the terminal.
  • Step 284 The target base station returns a handover request response to the MME.
  • Step 285 The MME returns a handover request response to the source base station, where the handover request response may include an RRC connection reconfiguration message mobility control message (such as a target cell identifier and a frequency to be accessed by the terminal), and a general radio resource configuration message (such as a request). Messages for random access) and dedicated radio resource configuration, security configuration and C-RNTI.
  • the handover request response further includes information such as a service type and a service quality level of the network slice instance.
  • Step 286 The source base station sends a handover command to the terminal.
  • the source base station may transparently forward the received handover request response to the terminal.
  • Step 287, the step and the step 288 may be an optional step, and the source base station sends an instruction for the state transition to the MME;
  • Step 288 The MME transparently transmits the state transition instruction to the target base station.
  • the state transition message For the bearer that needs to send the packet sequentially, the state transition message provides a sequence number and a hyper frame number (HFN) (the HFN is used to limit the transmission sequence number on the air interface. The number of bits), the target base station should assign them to the first packet that must be sent without assigning a sequence number.
  • HFN hyper frame number
  • the source serving base station freezes its transmitter/receiver state, that is, stops allocating the PDCP SN to the downlink packet, and stops sending the uplink packet to the core network;
  • Step 289 The terminal sends an instruction to complete the handover to the target base station.
  • the instruction for completing the handover specifically refers to a process in which the terminal and the target base station complete radio resource control (RRC) connection reconfiguration and random access.
  • RRC radio resource control
  • Step 290 The target base station sends a handover notification to the MME, to notify that the path is forwarded;
  • Step 291 The target base station sends an instruction for releasing the resource to the source base station, so that the resources of the source base station are released.
  • the embodiment of the present application can be applied to a network slice instance architecture in a future 5G network.
  • FIG. 3 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present application.
  • the embodiment of the present application provides an apparatus 300 for selecting a target base station, for performing any one of the foregoing methods.
  • the apparatus 300 for selecting a target base station includes a processor 301, a transceiver 302, a memory 303, and a communication interface 304; wherein the processor 301, the transceiver 302, the memory 303, and the communication interface 304 are connected to one another via a bus 305.
  • the bus 305 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 3, but it does not mean that there is only one bus or one type of bus.
  • the memory 303 may include a volatile memory such as a random-access memory (RAM); the memory may also include a non-volatile memory such as a flash memory.
  • RAM random-access memory
  • non-volatile memory such as a flash memory.
  • HDD hard disk drive
  • SSD solid-state drive
  • the memory 303 may also include a combination of the above types of memories.
  • the communication interface 304 can be a wired communication access port, a wireless communication interface, or a combination thereof, wherein the wired communication interface can be, for example, an Ethernet interface.
  • the Ethernet interface can be an optical interface, an electrical interface, or a combination thereof.
  • the wireless communication interface can be a WLAN interface.
  • the processor 301 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • the processor 301 may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the memory 303 can also be used to store program instructions, and the processor 301 calls the program instructions stored in the memory 303 to perform one or more steps in the embodiment shown in the above scheme, or an optional implementation thereof.
  • the apparatus 300 for selecting a target base station implements the function of the apparatus for selecting the target base station in the above method.
  • the processor 301 is configured to control the transceiver 302 to perform signal reception and signal transmission according to an instruction to execute the memory storage.
  • the apparatus 300 of the target base station is selected to perform the following.
  • the processor 301 is configured to: if it is determined that the terminal needs to perform the base station handover, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighbors
  • the base station determines the target base station to which the terminal needs to be handed over; where M is a positive integer; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication information indicating the service type and the service quality level of the network slice instance indicated by the information of the network slice instance.
  • the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal.
  • Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance.
  • the target base station is selected to take into account the signal of the neighbor base station.
  • the quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
  • the relationship between the network slice and the network slice instance may be 1:R, and R is a positive integer; that is, there are R different network slice instances under the same type of network slice.
  • the network slice instance in this embodiment is a collection of physical and logical resources.
  • the information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station.
  • the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
  • the transceiver 302 is configured before the target base station to be handed over by the M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. And the method is further configured to: receive the information of the network slice instance of the M neighboring base stations by using a wired or wireless form; and the transceiver 302 is further configured to: broadcast the information of the network slice instance of the source base station by using a wired or wireless form.
  • the information of the network slice instance includes: a network slice type, a slice Instance Identity (Slice ID), a quality of service class identifier (QCI), and a service.
  • any one or more of a Service Type and a slice parameter of a network slice instance if the Xn interface is connected between the base stations, the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; if the Xn interface between the base stations is not opened, Then, the base station can broadcast the information of its own network slice instance in the air interface. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
  • the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal in the embodiment of the present application may be, but not limited to, including: indicating the information of the network slice instance. Indicates the service type and quality of service level of the network slice instance. For example, the information of each network slice instance may directly include the service type and the service quality level of the network slice instance. The identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
  • N quasi-target base stations in the M neighboring base stations there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: the terminal accesses the quasi-target base station and the access to the current serving base station The performance is better; N is a positive integer not greater than M; the processor 301, based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M When the target base station to be handed over by the terminal is determined by the neighboring base stations, if there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then for each of the N quasi-target base stations The quasi-target base station determines, from the information of the network slice instance included in the quasi-target base station, the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the information of the
  • the network slice instance with the highest similarity can be selected for reconfiguration.
  • the reconfiguration process of the network slice instance changes.
  • the parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
  • the processor 301 is configured to: when determining the target base station to be handed over by the N quasi-target base stations according to the similarity degree of each quasi-target base station, for: Determining, among the N quasi-target base stations, the quasi-target base station with the highest similarity as the target base station; and the transceiver 302 determining, according to the similarity corresponding to each quasi-target base station, the terminal needs from the N quasi-target base stations.
  • the network slice instance reconfiguration request is sent to the quasi-target base station with the highest similarity among the N quasi-target base stations, where the network slice instance reconfiguration request includes the information of the network slice instance corresponding to the terminal.
  • the quasi-target base station with the highest similarity transmits the network slice
  • the instance reconfiguration request is received until the network slice instance reconfiguration is successfully received.
  • the processor 301 is further configured to: pass the transceiver 302.
  • the received network slice instance reconfiguration success response corresponding to the quasi-target base station is re-determined as the target base station; wherein the network slice instance reconfiguration request is used to enable the quasi-target base station receiving the network slice instance reconfiguration request to include the network itself
  • the slice instance performs a reconfiguration operation, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal.
  • the processor 301 selects the similarity according to each of the quasi-target base stations.
  • the specific use of the transceivers 302 is performed by the transceiver 302 to the N target base stations: the order of similarity is high to low.
  • Each of the P target multi-target base stations of the P-bit transmits a network slice instance reconfiguration request; wherein the network slice instance reconfiguration request includes information of a network slice instance corresponding to the terminal; P is a positive integer not greater than N
  • the network slice instance reconfiguration request is used to reconfigure the network slice instance included by the quasi-target base station that receives the network slice instance reconfiguration request, so that the reconfigured network slice instance is compatible with the network slice corresponding to the terminal. If the information of the instance is received by the transceiver 302 and the at least one network slice instance reconfiguration successful response returned by the P target base stations is received, at least one The network slice instance reconfiguration success response determines the target base station among the corresponding quasi-target base stations.
  • An implementation may find one of the quasi-target base stations that received the network slice instance reconfiguration success response as the target base station, or find a plurality of target base stations for improving reliability.
  • the processor 301 after receiving the at least one network slice instance reconfiguration success response returned by the P quasi-target base stations, determining the target base station from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response.
  • the terminal is connected to the L target base stations.
  • the quasi-target base station with the best service performance is determined as the target base station; L is a positive integer not greater than P.
  • Another alternative is to slice the earliest received network if the network slice instance reconfiguration successful response returned by one of the P target base stations is received by the transceiver 302.
  • the quasi-target base station corresponding to the instance reconfiguration success response is determined as the target base station, and sends a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P - 1 quasi-target base station cancels the reconfiguration operation of the network slice instance.
  • each of the N quasi-target base stations can satisfy the condition that: the terminal access quasi-target base station has better service performance than the access current current base station; N is a positive integer not greater than M; the processor 301 determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations
  • the target base station to be switched by the terminal is used, if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, the network slice instance information and the network slice corresponding to the terminal are used.
  • the K quasi-target base stations to which the information of the instance matches are determined as the target base station; wherein K is a positive integer not greater than N.
  • the processor 301 is further configured to: after determining, by the M neighboring base stations, the target base station to be handed over by the terminal, send, by using the transceiver, a handover request to the target base station; where The request includes the information of the network slice instance corresponding to the terminal, and the switch 302 receives the handover response returned by the target base station, where the handover response includes information about the network slice instance to be accessed by the terminal, where The network slice instance indicated by the information of the network slice instance to be accessed: the service carried by the network slice instance indicated by the information of the network slice instance corresponding to the terminal. Therefore, the process of the terminal switching to the target base station is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
  • FIG. 4 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present application.
  • the embodiment of the present application provides an apparatus for selecting a target base station, which is used to execute the foregoing method flow.
  • the apparatus 400 for selecting a target base station can be used to perform any of the above methods.
  • the apparatus 400 for selecting a target base station includes a receiving unit 401, a processing unit 402, and a transmitting unit 403.
  • the processing unit 402 is configured to: if it is determined that the terminal needs to perform the base station handover, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighbors
  • the base station determines the target base station to which the terminal needs to be handed over; where M is a positive integer; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication information indicating the service type and the service quality level of the network slice instance indicated by the information of the network slice instance.
  • the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal.
  • Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance.
  • the target base station is selected to take into account the signal of the neighbor base station.
  • the quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
  • the relationship between the network slice and the network slice instance may be 1:R, and R is a positive integer; that is, there are R different network slice instances under the same type of network slice.
  • a network slice instance is a collection of physical and logical resources.
  • the information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station.
  • the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
  • the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal is further configured to: receive the information of the network slice instance of the M neighboring base stations by using a wired or wireless form; and the sending unit 403 is further configured to: broadcast the information of the network slice instance of the source base station by using a wired or wireless form .
  • the information of the network slice instance includes: a network slice type, a slice Instance Identity (Slice ID), a quality of service class identifier (QCI), and a service.
  • any one or more of a Service Type and a slice parameter of a network slice instance if the Xn interface is connected between the base stations, the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; if the Xn interface between the base stations is not opened, Then, the base station can broadcast the information of its own network slice instance in the air interface. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
  • the information about the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal in the embodiment of the present application include: indicating, by the information used to indicate the network slice instance. Indicates the service type and quality of service level of the network slice instance.
  • the information of each network slice instance may directly include the service type and the service quality level of the network slice instance.
  • the identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
  • N quasi-target base stations in the M neighboring base stations there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: the terminal accesses the quasi-target base station and the access to the current serving base station The performance is better; N is a positive integer not greater than M; the processing unit 402, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M
  • the target base station to be handed over by the terminal is determined by the neighboring base stations, if there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then for each of the N quasi-target base stations
  • the quasi-target base station determines, from the information of the network slice instance included in the quasi-target base station, the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the information
  • the network slice instance with the highest similarity can be selected for reconfiguration.
  • the reconfiguration process of the network slice instance changes.
  • the parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
  • the processing unit 402 is configured to: when determining the target base station to be handed over by the N quasi-target base stations according to the similarity corresponding to each quasi-target base station, for: Determining, among the N quasi-target base stations, the quasi-target base station with the highest similarity as the target base station; and sending unit 403, determining, by the processing unit 402, the terminal needs from the N quasi-target base stations according to the similarity corresponding to each quasi-target base station After the target base station is switched, the network slice instance reconfiguration request is sent to the quasi-target base station with the highest similarity among the N quasi-target base stations, where the network slice instance reconfiguration request includes the information of the network slice instance corresponding to the terminal.
  • the quasi-target base station with the highest similarity transmits the network slice
  • the instance reconfiguration request is received until the network slice instance reconfiguration success response is received;
  • the processing unit 402 is further configured to: pass The quasi-target base station corresponding to the network slice instance reconfiguration success response received by the receiving unit 401 is re-determined as the target base station; wherein the network slice instance reconfiguration request is used to enable the quasi-target base station receiving the network slice instance reconfiguration request to The included network slice instance performs a reconfiguration operation, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal.
  • the sending unit 403 is configured to: to the N quasi-target base stations: the similarity is high to low.
  • the sequence ordering of each of the P target base stations of the first P bit sends a network slice instance reconfiguration request; wherein the network slice instance reconfiguration request includes information of the network slice instance corresponding to the terminal; P is not a positive integer greater than N; the network slice instance reconfiguration request is used to reconfigure the network slice instance included by the quasi-target base station receiving the network slice instance reconfiguration request to make the reconfigured network slice instance compatible
  • one of the quasi-target base stations receiving the network slice instance reconfiguration success response can be found as the target base station, or in order to improve the reliability, a plurality of target base stations can be found.
  • the processing unit 402 determines, after receiving the at least one network slice instance reconfiguration success response returned by the P quasi-target base stations, determining the target base station from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response.
  • the receiving, by the receiving unit 401, the network slice instance reconfiguration success response returned by each of the L target base stations in the P is received, the terminal is connected to the L target base stations.
  • the quasi-target base station with the best service performance is determined as the target base station; L is a positive integer not greater than P.
  • another optional solution is: if the network slice instance reconfiguration success response returned by one of the P target base stations is received by the receiving unit 401, the earliest received network slice is received.
  • the quasi-target base station corresponding to the instance reconfiguration success response is determined as the target base station, and sends a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P - 1 quasi-target base station cancels the reconfiguration operation of the network slice instance.
  • each of the N quasi-target base stations can satisfy the condition that the terminal access quasi-target base station has better service performance than accessing the current serving base station; a positive integer that is not greater than M.
  • the processing unit 402 determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations.
  • the target base station to be switched by the terminal is used, if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, the information of the network slice instance and the network corresponding to the terminal are used.
  • the K quasi-target base stations to which the information of the slice instance matches are determined as the target base station; wherein K is a positive integer not greater than N.
  • the sending unit 403 may further send a handover request to the target base station, where the handover request includes information of the network slice instance corresponding to the terminal, and the receiving unit 401 further uses And receiving the handover response returned by the target base station, where the handover response includes information about the network slice instance to be accessed by the terminal, where the network slice instance indicated by the information of the network slice instance to be accessed is:
  • the traffic carried by the network slice instance indicated by the information of the network slice instance is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
  • the receiving unit 401 and the sending unit 403 may be implemented by the transceiver 302, and the processing unit 402 may be implemented by the processor 301.
  • the apparatus 300 for selecting a target base station may include a processor 301, a transceiver 302, and a memory 303.
  • the memory 303 can be used to store the code when the processor 301 executes the solution, and the code can be a program/code pre-installed when the device 300 of the target base station is selected.
  • a computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer storage medium or transferred from one computer storage medium to another computer storage medium, for example, computer instructions can be wired from a website site, computer, server or data center (eg, coaxial cable, optical fiber, Digital Subscriber Line (DSL) or wireless (eg, infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center.
  • the computer storage medium can be any available media that can be accessed by the computer or a data storage device such as a server, data center, or the like, including one or more available media.
  • Usable media can be magnetic media (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical media (eg, CD, DVD, BD, HVD, etc.), or semiconductor media (eg, ROM, EPROM, EEPROM, Non-volatile memory (NAND FLASH), solid state disk (SSD), etc.
  • magnetic media eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical media eg, CD, DVD, BD, HVD, etc.
  • semiconductor media eg, ROM, EPROM, EEPROM, Non-volatile memory (NAND FLASH), solid state disk (SSD), etc.
  • embodiments of the present application can be provided as a method, system, or computer program product. Therefore, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, embodiments of the present application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine such that instructions executed by a processor of a computer or other programmable data processing device are utilized for Means for implementing the functions specified in one or more flows of the flowchart or in a block or blocks of the flowchart.
  • the computer instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device, the instruction device A function that is specified in one or more blocks of a flow or a flow and/or a block diagram of a flowchart.

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Abstract

A method and device for selecting a target base station, and a storage medium, used to select a better target base station for a terminal in a network slice instance application scenario. In the embodiment of the present application, a source base station determines from a number of M of neighboring base stations, according to the signal quality of the M neighboring base stations, information of network slice instances of the M neighboring base stations and information of a network slice instance corresponding to the terminal, a target base station needing to be switched by the terminal; the information of each network slice instance in the information of the network slice instances of the M neighboring base stations and in the information of the network slice instance corresponding to the terminal comprises: indication information used for indicating a service type and service quality level of a network slice instance indicated by the information of the network slice instance. In this way, when the target base station is selected, the signal quality of the neighboring base stations are considered, and the information of the network slice instances on the neighboring base stations are also considered, so that the selected target base station can better adapted to the network slice instance application scenario.

Description

一种选择目标基站的方法、装置和存储介质Method, device and storage medium for selecting target base station
本申请要求在2017年04月11日提交中国专利局、申请号为201710233624.1、发明名称为“一种选择目标基站的方法、装置和存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。The present application claims priority to Chinese Patent Application No. 200910233624., entitled "A Method, Apparatus and Storage Medium for Selecting a Target Base Station", filed on April 11, 2017, the entire contents of which are incorporated by reference. Combined in this application.
技术领域Technical field
本申请实施例涉及通信领域，尤其涉及一种选择目标基站的方法、装置和存储介质。The embodiments of the present application relate to the field of communications, and in particular, to a method, an apparatus, and a storage medium for selecting a target base station.
背景技术Background technique
长期演进(Long Term Evolution，LTE)的终端在基站间的切换流程中采用终端辅助网络控制的思路，具体来说，源基站向终端下发测量控制，终端对邻基站的信号质量进行测量，并将各个邻基站的信号质量上报，源基站根据终端上报的各个邻基站的信号质量，在确定存在邻基站的信号质量大于源基站信号质量时，源基站确定终端从源基站切换至信号质量更优的目标基站。The terminal of the Long Term Evolution (LTE) adopts the idea of the terminal assisted network control in the process of the handover between the base stations. Specifically, the source base station sends the measurement control to the terminal, and the terminal measures the signal quality of the neighboring base station, and The signal quality of each neighboring base station is reported. The source base station determines that the signal quality of the neighboring base station is greater than the signal quality of the source base station according to the signal quality of each neighboring base station reported by the terminal, and the source base station determines that the terminal switches from the source base station to the signal quality. Target base station.
随着网络功能虚拟化(Network Function Virtualization，NFV)的出现，网络功能可以基于通用硬件构建，而毋须基于专用硬件平台。NFV的出现使得运营商为不同的网络业务需求构建不同的虚拟网络成为可能。为不同网络业务需求构建的虚拟网络称为一个网络切片实例。其中各网络功能可根据网络业务需求进行优化、定制。基于NFV技术的网络切片实例可根据需求快速部署，以快速满足不同场景的需求。而在未来5G通信***中，将采用基于逻辑的资源分配技术即网络切片实例，而不再局限于具体的物理资源。With the advent of Network Function Virtualization (NFV), network functions can be built on common hardware without the need for a dedicated hardware platform. The emergence of NFV makes it possible for operators to build different virtual networks for different network business needs. A virtual network built for different network business needs is called a network slice instance. Each network function can be optimized and customized according to network service requirements. Network segmentation instances based on NFV technology can be rapidly deployed as needed to quickly meet the needs of different scenarios. In the future 5G communication system, a logic-based resource allocation technique, that is, a network slice instance, will be adopted, and is no longer limited to a specific physical resource.
但是目前终端在源基站和目标基站之间切换时仍然采用LTE中的策略，即源基站根据邻基站的信号质量来确定目标基站从而实现终端的切换的，如此，无法更好的适应网络切片实例应用场景。However, the terminal still adopts the strategy in LTE when the terminal switches between the source base station and the target base station, that is, the source base station determines the target base station according to the signal quality of the neighboring base station to implement terminal handover, and thus cannot better adapt to the network slice instance. Application scenario.
发明内容Summary of the invention
本申请实施例提供一种选择目标基站的方法、装置和存储介质，用以在网络切片实例应用场景下为终端选择更好的目标基站。An embodiment of the present application provides a method, an apparatus, and a storage medium for selecting a target base station, which are used to select a better target base station for a terminal in a network slice instance application scenario.
第一方面，本申请实施例提供一种选择目标基站的方法，该方法包括：源基站若确定终端需进行基站切换，则源基站根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M为正整数；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。In a first aspect, the embodiment of the present application provides a method for selecting a target base station, where the method includes: if the source base station determines that the terminal needs to perform base station handover, the source base station according to the signal quality of the M neighboring base stations, and the network slice of the M neighboring base stations. The information of the instance, and the information of the network slice instance corresponding to the terminal, determine the target base station to be handed over by the M neighboring base stations; where M is a positive integer; wherein the information and the terminal of the network slice instance of the M neighboring base stations The information of each network slice instance in the information of the corresponding network slice instance includes: indication information indicating a service type and a service quality level of the network slice instance indicated by the information of the network slice instance.
由于源基站是根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息选择的目标基站，因此选择目标基站时既考虑到了邻基站的信号质量，也考虑到了邻基站上的网络切片实例的信息，从而可使选择出的目标基站更好的适应网络切片实例应用场景。进而，可避免选择出的目标基站与终端的网络切片实例的信息不匹配的问题。Since the source base station is a target base station selected according to the signal quality of the M neighboring base stations, the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station is selected to take into account the signal of the neighbor base station. The quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
本申请实施例中网络切片实例是一系列物理和逻辑资源的集合。本申请实施例中的源 基站、目标基站或邻基站中任一个基站的网络切片实例的信息具体是指该基站上所包括的网络切片实例中网络切片实例的信息。本申请实施例中，网络切片实例上面跑的是业务，而终端对应的网络切片实例的信息指的是该终端所使用的业务对应的网络切片实例的信息。The network slice instance in this embodiment of the present application is a collection of a series of physical and logical resources. The information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station. In the embodiment of the present application, the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
可选地，源基站根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站之前，还包括：源基站通过有线或无线的形式接收M个邻基站的网络切片实例的信息；并通过有线或无线的形式广播源基站的网络切片实例的信息。一种可选地的方案中，若基站间已经采用Xn口有线连接，则基站会优先选择Xn口广播自己的网络切片实例的信息，如此可省时省力；若保留基站间Xn接口未开通，则基站可走空口广播自己的网络切片实例的信息。如此可使基站获取邻基站的网络切片实例的信息。Optionally, the source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station to be switched by the terminal from the M neighboring base stations. The method further includes: the source base station receiving information of the network slice instance of the M neighboring base stations in a wired or wireless manner; and broadcasting the information of the network slice instance of the source base station in a wired or wireless manner. In an optional solution, if the Xn interface is connected between the base stations, the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; if the Xn interface between the base stations is not opened, Then, the base station can broadcast the information of its own network slice instance in the air interface. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
可选地，本申请实施例中M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括但不局限于：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。比如每个网络切片实例的信息可直接包括网络切片实例的业务类型和业务质量等级；也可包括网络切片实例的标识，进而可以根据网络切片实例的标识查出业务类型和业务质量等级。Optionally, the information of the network slice instance of the M neighboring base stations in the embodiment of the present application and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include, but are not limited to, indicating the network slice instance. The information indicating the service type and service quality level of the network slice instance indicated by the information. For example, the information of each network slice instance may directly include the service type and the service quality level of the network slice instance. The identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
一种可选地实施方式中M个邻基站中存在N个准目标基站；N个准目标基站中的每个准目标基站满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数；源基站根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站，包括：若不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站，则：针对N个准目标基站中的每个准目标基站，从准目标基站包括的网络切片实例的信息中确定出：与终端对应的网络切片实例的信息的相似度最高的网络切片实例的信息，以及相似度最高的网络切片实例的信息与终端对应的网络切片实例的信息的相似度；根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站；其中，准目标基站的网络切片实例的信息与终端对应的网络切片实例的信息的相似度是根据该两个网络切片实例的信息中包括的网络切片实例的参数的参数类型和参数值确定的。如此，当不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站时，可以选择相似度最高的网络切片实例进行重配置，如此，网络切片实例的重配置过程进行变动的参数项尽可能的少，且参数的值的变动范围也尽可能的小，进一步可加快重配置速率。In an optional implementation manner, there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: the terminal accesses the quasi-target base station and the access to the current serving base station The performance is better; N is a positive integer not greater than M; the source base station obtains M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. Determining the target base station to be handed over by the terminal, including: if there is no quasi-target base station that matches the information of the network slice instance with the information of the network slice instance corresponding to the terminal, then: for each of the N quasi-target base stations Determining, from the information of the network slice instance included in the quasi-target base station, the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the information of the network slice instance with the highest similarity corresponding to the terminal The similarity of the information of the network slice instance; determining the terminal needs from the N quasi-target base stations according to the similarity degree of each quasi-target base station a target base station of the handover; wherein the similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is a parameter type of a parameter of the network slice instance included in the information of the two network slice instances The parameter value is determined. In this manner, when there is no quasi-target base station that matches the information of the network slice instance and the information of the network slice instance corresponding to the terminal, the network slice instance with the highest similarity can be selected for reconfiguration. Thus, the reconfiguration process of the network slice instance changes. The parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
为了提高重配置效率，一种可选地实施方式中根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站，包括：将N个准目标基站中：相似度最高的准目标基站确定为目标基站；根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站之后，还包括：向N个准目标基站中相似度最高的准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；若确定网络切片实例重配置失败，则向N个准目标基站中除已发送过网络切片实例重配置请求的准目标基站之外的准目标基站中：相似度最高的准目标基站发送网络切片实例重配置请求，直至接收到网络切片实例重配置成功响应；将接收到的网络切片实例重配置成功响应对应的准目标基站重新确定为目标基站；其中，网络切片实例重 配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息。In order to improve the reconfiguration efficiency, in an optional implementation manner, according to the similarity degree of each quasi-target base station, the target base station to be handed over by the terminal is determined from the N quasi-target base stations, including: among the N quasi-target base stations The quasi-target base station with the highest similarity is determined as the target base station; after determining the target base station to be handed over by the N quasi-target base stations according to the similarity degree of each quasi-target base station, the method further includes: to N quasi-target base stations The medium-similar target base station sends a network slice instance reconfiguration request. The network slice instance reconfiguration request includes information about the network slice instance corresponding to the terminal. If the network slice instance reconfiguration fails, the N target targets are determined. The quasi-target base station other than the quasi-target base station that has sent the network slice instance reconfiguration request in the base station: the quasi-target base station with the highest similarity sends the network slice instance reconfiguration request until receiving the network slice instance reconfiguration success response; Re-determining the target base station corresponding to the received network slice instance reconfiguration success response as the target The network slice instance reconfiguration request is used to reconfigure the network slice instance included in the re-configured network slice instance compatible terminal by the quasi-target base station receiving the network slice instance reconfiguration request. Information about the network slice instance.
可选地，为了提高重配置成功的几率，以及提高终端切换的可靠性，可以进行多重准备，可选地，根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站，包括：向N个准目标基站中：相似度从高到低的顺序排序在前P位的P个准目标基站中的每个准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；P为不大于N的正整数；网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息；若接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站。Optionally, in order to improve the probability of successful reconfiguration and improve the reliability of the handover of the terminal, multiple preparations may be performed. Optionally, the terminal is determined from the N quasi-target base stations according to the similarity degree of each quasi-target base station. The target base station to be switched includes: to the N quasi-target base stations: the order of similarity from high to low, the network slice instance reconfiguration request is sent by each of the P target base stations of the previous P bits; The network slice instance reconfiguration request includes information about a network slice instance corresponding to the terminal; P is a positive integer not greater than N; and the network slice instance reconfiguration request is used to enable the target base station to receive the network slice instance reconfiguration request Performing a reconfiguration operation on the network slice instance included in the network, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal; and receiving at least one network slice instance reconfiguration successfully returned by the P target base stations And determining a target base station from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response.
相应地，可从接收到网络切片实例重配置成功响应的准目标基站中找出一个作为目标基站，或者为了提高可靠性，找出多个作为目标基站。可选地，若接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站，包括：若接收到P中L个准目标基站中的每个准目标基站分别返回的网络切片实例重配置成功响应，则：将L个准目标基站中终端接入后服务性能最优的准目标基站确定为目标基站；L为不大于P的正整数。Accordingly, one of the quasi-target base stations receiving the network slice instance reconfiguration success response can be found as the target base station, or in order to improve the reliability, a plurality of target base stations can be found. Optionally, if at least one network slice instance reconfiguration success response returned by the P quasi-target base stations is received, the target base station is determined from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response, including: To the network slice instance reconfiguration success response returned by each of the L quasi-target base stations in P, the target retargeting base station with the best service performance after terminal access in the L quasi-target base stations is determined as the target Base station; L is a positive integer not greater than P.
为了保证时延最短，另一种可选地方案为，若接收到P个准目标基站中的一个基站返回的网络切片实例重配置成功响应，则将该最早接收到的网络切片实例重配置成功响应对应的准目标基站确定为目标基站，并向P个准目标基站中剩余的P-1个准目标基站发送重配置取消命令；其中，重配置取消命令用于使剩余的P-1个准目标基站取消对网络切片实例的重配置操作。In order to ensure the shortest delay, another optional solution is: if the network slice instance reconfiguration successfully returned by one of the P target base stations is received, the oldest received network slice instance is reconfigured successfully. Responding to the corresponding quasi-target base station as the target base station, and transmitting a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P-1 quasi The target base station cancels the reconfiguration operation on the network slice instance.
可选地，M个邻基站中存在N个准目标基站；N个准目标基站中的每个准目标基站满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数；源基站根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站，包括：若存在将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站，则：将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站确定为目标基站；其中，K为不大于N的正整数。Optionally, there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition that: the terminal access quasi-target base station has better service performance than the access to the current serving base station; N is a positive integer that is not greater than M. The source base station determines the terminal from the M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. The target base station to be switched includes: if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, the information of the network slice instance and the information of the network slice instance corresponding to the terminal The matched K quasi-target base stations are determined as target base stations; wherein K is a positive integer not greater than N.
可选地，从M个邻基站中确定出终端需切换的目标基站之后，还包括：源基站向目标基站发送切换请求；其中，切换请求中包括终端对应的网络切片实例的信息；源基站接收目标基站返回的切换响应；其中，切换响应中包括终端的待接入的网络切片实例的信息；其中，待接入的网络切片实例的信息所指示的网络切片实例：兼容终端对应的网络切片实例的信息所指示的网络切片实例所承载的业务。从而实现了终端切换至目标基站的过程，且使终端接入目标基站中能够兼容终端对应的网络切片实例的信息的网络切片实例中，保证终端业务的不中断。Optionally, after determining, by the M neighboring base stations, the target base station to be handed over by the terminal, the method further includes: the source base station sending a handover request to the target base station; where the handover request includes information about the network slice instance corresponding to the terminal; and the source base station receives a handover response returned by the target base station, where the handover response includes information of the network slice instance to be accessed by the terminal, where the network slice instance indicated by the information of the network slice instance to be accessed is a network slice instance corresponding to the compatible terminal The information is carried by the network slice instance that is carried by the instance. Therefore, the process of the terminal switching to the target base station is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
第二方面，本申请实施例提供一种选择目标基站的装置，选择目标基站的装置包括存储器、收发器和处理器，其中：存储器用于存储指令；处理器用于根据执行存储器存储的指令，并控制收发器进行信号接收和信号发送，当处理器执行存储器存储的指令时，选择 目标基站的装置用于执行上述第一方面或第一方面中任一种方法。In a second aspect, an embodiment of the present application provides an apparatus for selecting a target base station, where the apparatus for selecting a target base station includes a memory, a transceiver, and a processor, where: the memory is used to store an instruction; the processor is configured to execute an instruction stored in the memory, and The control transceiver performs signal reception and signal transmission. When the processor executes the memory storage instruction, the device selecting the target base station is configured to perform the method of any of the first aspect or the first aspect.
第三方面，本申请实施例提供一种选择目标基站的装置，用于实现上述第一方面或第一方面中的任意一种方法，包括相应的功能模块，分别用于实现以上方法中的步骤。In a third aspect, the embodiment of the present application provides a device for selecting a target base station, which is used to implement any one of the foregoing first aspect or the first aspect, including a corresponding functional module, which is used to implement the steps in the foregoing method. .
第四方面，本申请实施例提供一种计算机存储介质，计算机存储介质中存储有指令，当其在计算机上运行时，使得计算机执行第一方面或第一方面的任意可能的实现方式中的方法。In a fourth aspect, the embodiment of the present application provides a computer storage medium, where the computer storage medium stores instructions, when the computer is running on the computer, causing the computer to perform the method in the first aspect or any possible implementation manner of the first aspect. .
第五方面，本申请实施例提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第一方面或第一方面的任意可能的实现方式中的方法。In a fifth aspect, an embodiment of the present application provides a computer program product comprising instructions, when executed on a computer, causing a computer to perform the method of the first aspect or any possible implementation of the first aspect.
本申请实施例中，源基站若确定终端需进行基站切换，则根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。由于源基站是根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息选择的目标基站，因此选择目标基站时既考虑到了邻基站的信号质量，也考虑到了邻基站上的网络切片实例的信息，从而可使选择出的目标基站更好的适应网络切片实例应用场景。In the embodiment of the present application, if the source base station determines that the terminal needs to perform the base station handover, the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance. Since the source base station is a target base station selected according to the signal quality of the M neighboring base stations, the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station is selected to take into account the signal of the neighbor base station. The quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario.
附图说明DRAWINGS
图1为本申请实施例的一种通信***的示意性架构图；1 is a schematic structural diagram of a communication system according to an embodiment of the present application;
图2为本申请实施例提供的一种选择目标基站的方法流程示意图；2 is a schematic flowchart of a method for selecting a target base station according to an embodiment of the present application;
图2a为本申请实施例提供的一种网络切片实例的信息的示意图；2a is a schematic diagram of information of a network slice instance according to an embodiment of the present disclosure;
图2b为本申请实施例提供的一种网络切片实例参数的示意图；FIG. 2b is a schematic diagram of a network slice instance parameter according to an embodiment of the present application;
图2c为本申请实施例提供的一种基站维护的网络切片实例的信息的示意图；2c is a schematic diagram of information about a network slice instance maintained by a base station according to an embodiment of the present disclosure;
图2d为本申请实施例提供的一种选择目标基站的方法流程示意图；FIG. 2 is a schematic flowchart of a method for selecting a target base station according to an embodiment of the present disclosure;
图2e为一种基于图2d的选择目标基站的方法流程示意图；2e is a schematic flow chart of a method for selecting a target base station based on FIG. 2d;
图2f为一种基于图2d的选择目标基站的方法流程示意图；2f is a schematic flow chart of a method for selecting a target base station based on FIG. 2d;
图2g为本申请实施例提供的一种选择目标基站以及终端切换的方法流程示意图；2G is a schematic flowchart of a method for selecting a target base station and a terminal handover according to an embodiment of the present application;
图2h为本申请实施例提供的一种选择目标基站以及终端切换的方法流程示意图；2h is a schematic flowchart of a method for selecting a target base station and a terminal handover according to an embodiment of the present application;
图3为本申请实施例提供的一种选择目标基站的装置的结构示意图；FIG. 3 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present disclosure;
图4为本申请实施例提供的一种选择目标基站的装置的结构示意图。FIG. 4 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present application.
具体实施方式detailed description
图1示出了应用本申请实施例的一种通信***的示意性架构图。如图1所示，该通信***100可以包括终端105，以及多个基站，本申请实施例中将终端105当前接入的基站称为源基站101，将终端105当前虽然未接入但是可以接受到信号的基站称为邻基站，比如邻基站102、邻基站103和邻基站104。终端105和基站可通过无线连接或其它方式连接。源基站若确定终端需要进行基站切换，则源基站可以从邻基站中为终端挑选一个目标基站，以使终端从源基站切换至目标基站，从而通过目标基站为终端提供各种服务。本申请实施例中的源基站、邻基站和目标基站中的任一个基站也可称为一个小区。FIG. 1 shows a schematic architectural diagram of a communication system to which an embodiment of the present application is applied. As shown in FIG. 1 , the communication system 100 can include a terminal 105 and a plurality of base stations. In this embodiment of the present application, the base station currently accessed by the terminal 105 is referred to as a source base station 101, and the terminal 105 is currently not accessible but acceptable. The base station to the signal is called a neighbor base station, such as the neighbor base station 102, the neighbor base station 103, and the neighbor base station 104. The terminal 105 and the base station can be connected by wireless connection or other means. If the source base station determines that the terminal needs to perform the base station handover, the source base station may select a target base station for the terminal from the neighboring base station, so that the terminal switches from the source base station to the target base station, thereby providing various services for the terminal through the target base station. Any one of the source base station, the neighbor base station, and the target base station in the embodiment of the present application may also be referred to as a cell.
本申请实施例中结合终端和/或基站来描述各种方面。终端，指向用户提供语音和/或数据连通性的设备(device)，包括无线终端。无线终端可以是具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备，经无线接入网与一个或多个核心网进行通信的移动终端。例如，无线终端可以是移动电话(或称为“蜂窝”电话)和具有移动终端的计算机。又如，无线终端也可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。再如，无线终端可以为移动站(mobile station)、接入点(access point)、或用户设备(user equipment，简称UE)的一部分。Various aspects are described in connection with a terminal and/or a base station in the embodiments of the present application. A terminal, a device that provides voice and/or data connectivity to a user, including a wireless terminal. The wireless terminal can be a handheld device with wireless connectivity, or other processing device connected to a wireless modem, and a mobile terminal that communicates with one or more core networks via a wireless access network. For example, the wireless terminal can be a mobile phone (or "cellular" phone) and a computer with a mobile terminal. As another example, the wireless terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For another example, the wireless terminal can be part of a mobile station, an access point, or a user equipment (UE).
本申请实施例中，术语“基站”包括但不限于节点、站控制器、接入点(Access Point，简称AP)、或任何其它类型的能够在无线环境中工作的接口设备。In the embodiment of the present application, the term "base station" includes but is not limited to a node, a station controller, an access point (AP), or any other type of interface device capable of working in a wireless environment.
图2示例性示出了本申请实施例提供的一种选择目标基站的方法流程示意图。FIG. 2 is a schematic flowchart showing a method for selecting a target base station according to an embodiment of the present application.
基于图1所示的***架构，如图2所示，本申请实施例提供的基站侧实现的一种选择目标基站的方法，该方法包括：Based on the system architecture shown in FIG. 1 , as shown in FIG. 2 , a method for selecting a target base station implemented by a base station side according to an embodiment of the present application, the method includes:
步骤201，源基站若确定终端需进行基站切换，则执行步骤202； Step 201, if the source base station determines that the terminal needs to perform base station handover, step 202 is performed;
步骤202，源基站根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M为正整数；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括但不局限于：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。Step 202: The source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base stations to be handed over by the M neighboring base stations; The M is a positive integer. The information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include but are not limited to: indicating the network slice instance. The information indicating the service type and service quality level of the network slice instance indicated by the information.
本申请实施例中，源基站若确定终端需进行基站切换，则根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。由于源基站是根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息选择的目标基站，因此选择目标基站时既考虑到了邻基站的信号质量，也考虑到了邻基站上的网络切片实例的信息，从而可使选择出的目标基站更好的适应网络切片实例应用场景。进而，可避免选择出的目标基站与终端的网络切片实例的信息不匹配的问题。In the embodiment of the present application, if the source base station determines that the terminal needs to perform the base station handover, the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance. Since the source base station is a target base station selected according to the signal quality of the M neighboring base stations, the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station is selected to take into account the signal of the neighbor base station. The quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
网络切片实例模板(Network Slice Template，NST)：是网络功能、电信服务和网络功能所需的相应的资源需求的逻辑表示(英文可表示为NST is a logical representation of the Network Function(s)and corresponding resource requirements necessary to provide the required telecommunication services and network capabilities)。Network Slice Template (NST): is a logical representation of the corresponding resource requirements required for network functions, telecommunication services, and network functions (English can be expressed as NST is a logical representation of the Network Function(s) and corresponding Resource requirements necessary to provide the required telecommunication services and network capabilities).
网络切片实例(Network Slice Instance，NSI)：是NST中创建的一个实例(英文可表示为NSI is an instance created from a NST)。Network Slice Instance (NSI): is an instance created in NST (English can be expressed as NSI is an instance created from a NST).
网络切片：描述通过网络切片实例实现的***行为的概念。是通过NSI实施的***行为的概念描述(英文可表示为Network Sliceis a concept describing a system behaviour which is implemented via Network Slice Instance(s))。网络切片和网络切片实例的关系可为1：R，R为正整数；即同一类型的网络切片下面有R种不同的网络切片实例。Network Slice: Describes the concept of system behavior implemented through network slice instances. It is a conceptual description of the system behavior implemented by the NSI (English can be expressed as Network Sliceis a concept describing a system behaviour which is implemented via Network Slice Instance(s)). The relationship between the network slice and the network slice instance may be 1:R, and R is a positive integer; that is, there are R different network slice instances under the same type of network slice.
也就是说，网络切片实例是一系列物理和逻辑资源的集合。本申请实施例中的源基站、目标基站或邻基站中任一个基站的网络切片实例的信息具体是指该基站上所包括的网络切片实例中网络切片实例的信息。本申请实施例中，网络切片实例上面跑的是业务，而终 端对应的网络切片实例的信息指的是该终端所使用的业务对应的网络切片实例的信息。That is, a network slice instance is a collection of physical and logical resources. The information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station. In the embodiment of the present application, the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
图2a示例性示出了本申请实施例提供的一种网络切片实例的信息的示意图，如图2a所示，可选地，网络切片实例的信息包括：网络切片类型(Network slice type)、网络切片实例的标识(Slice Instance Identity，Slice ID)、业务质量等级的标识(Quality of Service Class Identifier，QCI)、业务类型(Service Type)和网络切片实例的参数(Slice Instance Parameters)中的任一个或任多个。FIG. 2a is a schematic diagram showing information of a network slice instance provided by an embodiment of the present application. As shown in FIG. 2a, the information of the network slice instance includes: a network slice type, a network. Any one of a slice instance identifier (Slice ID), a quality of service class Identifier (QCI), a service type (Service Type), and a slice Instance Parameters (Slice Instance Parameters) or More than one.
可选地，本申请实施例中M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括但不局限于：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。比如每个网络切片实例的信息可直接包括网络切片实例的业务类型和业务质量等级；也可包括网络切片实例的标识，进而可以根据网络切片实例的标识查出业务类型和业务质量等级。Optionally, the information of the network slice instance of the M neighboring base stations in the embodiment of the present application and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include, but are not limited to, indicating the network slice instance. The information indicating the service type and service quality level of the network slice instance indicated by the information. For example, the information of each network slice instance may directly include the service type and the service quality level of the network slice instance. The identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
网络切片实例网络切片类型：可包括多种类型，比如：增强型移动互联网(Enhance Mobile Broadband，eMBB)，超高可靠性与超低时延通信(Ultra Reliable&Low Latency Communication，uRLLC)以及海量物联网通信(Massive Machine Type Communication，mMTC)。比如图2a中所示的网络切片类型为uRLLC。Network slice instance Network slice type: can include multiple types, such as: Enhanced Mobile Broadband (eMBB), Ultra Reliable & Low Latency Communication (uRLLC), and massive IoT communication (Massive Machine Type Communication, mMTC). For example, the network slice type shown in Figure 2a is uRLLC.
网络切片实例的标识：用于标识该网络切片实例。可选地，该网络切片实例的标识可为全局ID。同一个网络切片实例的标识所标识的网络切片实例可以运行在多个不同的基站上。比如，图2a中所示的网络切片实例的标识为1。ID of the network slice instance: used to identify the network slice instance. Optionally, the identifier of the network slice instance may be a global ID. The network slice instance identified by the identity of the same network slice instance can run on multiple different base stations. For example, the identifier of the network slice instance shown in Figure 2a is 1.
业务质量等级的标识：可按需分档。比如可根据客户的需要或切片实例默认的业务质量等级为客户的业务划分等级。比如终端的业务要求的质量等级为5级，则运行该终端的业务的网络切片实例的信息中的业务质量等级的标识也需要为5级。比如，图2a中所示的网络切片实例的业务质量等级的标识为5。Identification of the quality of service level: can be binned as needed. For example, the customer's business can be classified according to the needs of the customer or the default service quality level of the slice instance. For example, if the service requires a quality level of 5, the identifier of the service quality level in the information of the network slice instance of the service running the terminal also needs to be level 5. For example, the service quality level of the network slice instance shown in Figure 2a is identified as 5.
业务类型：用于标识该网络切片实例可支持或可运行的业务的类型，亦为全局标识。业务类型是指一个业务所从属的类型，是全局标识，业务类型的划分是唯一的。可存在两个网络切片实例的业务类型相同而业务质量等级不同的情况。比如，图2a中所示的网络切片实例的业务类型为01自动驾驶类型(Automatic Drive)。Service Type: A type used to identify the services that the network slice instance can support or run. It is also a global identifier. The service type refers to the type of a service, is a global identifier, and the division of the service type is unique. There may be cases where the service types of the two network slice instances are the same and the service quality levels are different. For example, the service type of the network slice instance shown in Figure 2a is 01 Automatic Drive Type.
网络切片实例的参数：可表示此网络切片实例的各层所采使用的模块名称。例如在网络切片实例中的无线链路层控制协议(Radio Link Control，RLC)层可采用非确认模式(Unacknowledged Mode，UM)或确认模式(Acknowledged Mode，AM)模式。比如，图2a中所示的网络切片实例的网络切片实例参数中指示RLC层采用UM。Parameters of the network slice instance: can represent the module name used by each layer of this network slice instance. For example, the Radio Link Control (RLC) layer in the network slice instance may adopt an Unacknowledged Mode (UM) or an Acknowledged Mode (AM) mode. For example, the network slice instance parameter of the network slice instance shown in FIG. 2a indicates that the RLC layer adopts UM.
图2b示例性示出了本申请实施例提供的一种网络切片实例参数的示意图，如图2b所示，该图中示出了三个网络切片实例，分别为网络切片实例211、网络切片实例212和网络切片实例213。图2b中分别示出了每个网络切片实例在分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、RLC层、媒体访问控制(Medium Access Control，MAC)和物理(Phyical Layer，PHY)层的参数。FIG. 2b is a schematic diagram showing a network slice instance parameter provided by an embodiment of the present application. As shown in FIG. 2b, three network slice instances are shown, which are respectively a network slice instance 211 and a network slice instance. 212 and network slice instance 213. Each of the network slice instances is shown in Figure 2b in the Packet Data Convergence Protocol (PDCP) layer, the RLC layer, the Medium Access Control (MAC), and the Physical Layer (PHY) layer. parameter.
如图2b所示，网络切片实例211在PDCP层包括健壮性包头压缩(Robust Header Compression，ROHC)、安全性(Security)和完整性(integrity)模块；在RLC层采用UM或AM；在MAC层使用算法1。算法1保证吞吐量(throuput)；在PHY层，带宽(band)为宽(wide)，传输时间间隔(Transmission Time Interval，TTI)为1毫秒(ms)，资源块组(Resource Block Group，RBG)尺寸为大(large)。As shown in FIG. 2b, the network slice instance 211 includes a Robust Header Compression (ROHC), security, and integrity module at the PDCP layer; UM or AM at the RLC layer; and a MAC layer at the RLC layer. Use algorithm 1. Algorithm 1 guarantees throughput (throput); at the PHY layer, the bandwidth is wide, and the Transmission Time Interval (TTI) is 1 millisecond (ms). Resource Block Group (RBG) The size is large.
如图2b所示，网络切片实例212在PDCP层包括ROHC模块；在RLC层采用UM；在MAC层使用算法2，算法2保证吞吐量(throuput)或无授权传输grant-free)；在PHY层，带宽(band)为窄(narrow)，TTI为0.5ms，RBG尺寸为普通(normal)。As shown in Figure 2b, the network slice instance 212 includes the ROHC module at the PDCP layer; UM at the RLC layer; algorithm 2 at the MAC layer, algorithm 2 guarantees throughput (throput or unauthorized transmission grant-free); at the PHY layer The bandwidth is narrow, the TTI is 0.5 ms, and the RBG size is normal.
如图2b所示，网络切片实例213在PDCP层包括ROHC、安全性(Security)和完整性(integrity)模块；在RLC层采用UM或AM；在MAC层使用算法3，算法3保证吞吐量(throuput)、时延(delay)或无授权传输(grant-free)；在PHY层，带宽(band)为窄(narrow)，TTI为1ms，RBG尺寸为小(small)。As shown in FIG. 2b, the network slice instance 213 includes a ROHC, security, and integrity module at the PDCP layer; UM or AM at the RLC layer; and algorithm 3 at the MAC layer, and algorithm 3 guarantees throughput ( Throuput), delay or grant-free; at the PHY layer, the bandwidth is narrow, the TTI is 1 ms, and the RBG size is small.
本申请实施例中的带宽(band)为宽(wide)或窄(narrow)都是一个相对的概念，不是一个定值；比如举一个具体的数值，宽(wide)为40MHz的带宽，窄(narrow)为10MHz的带宽。本申请实施例中的RBG的尺寸为大(large)、普通(normal)或小(small)都是一个相对的概念，不是一个定值；比如举一个具体的数值，大(large)为24，普通(normal)为12，小(small)为6。The bandwidth in the embodiment of the present application is a wide or narrow concept, which is a relative concept, not a fixed value; for example, a specific value, a wide bandwidth of 40 MHz, and a narrow ( Narrow) is a bandwidth of 10MHz. The size of the RBG in the embodiment of the present application is a large, normal, or small, which is a relative concept, not a fixed value; for example, a specific value, the maximum is 24, Normal is 12 and small is 6.
本申请实施例中，可在两个不同的基站上分别部署网络切片实例的标识相同的两个网络切片实例。该网络切片实例的标识相同的网络切片实例中包括的网络切片实例的参数可能相同，也可能不同。In the embodiment of the present application, two network slice instances with the same identifier of the network slice instance may be deployed on two different base stations. The parameters of the network slice instance included in the network slice instance with the same identifier of the network slice instance may be the same or different.
本申请实施例中，源基站可以根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站之前，还包括：源基站通过有线或无线的形式接收M个邻基站的网络切片实例的信息；并通过有线或无线的形式广播源基站的网络切片实例的信息。在具体实施例中，一种可选地的方案中，若基站间已经采用Xn口有线连接，则基站会优先选择Xn口广播自己的网络切片实例的信息，如此可省时省力；若保留基站间Xn接口未开通，则基站可走空口广播自己的网络切片实例的信息。如此可使基站获取邻基站的网络切片实例的信息。In the embodiment of the present application, the source base station may determine, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, that the terminal needs to be switched from the M neighboring base stations. Before the target base station, the method further includes: the source base station receiving information of the network slice instance of the M neighbor base stations by using a wired or wireless manner; and broadcasting the information of the network slice instance of the source base station by using a wired or wireless manner. In an optional embodiment, if an Xn interface is used between the base stations, the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; If the Xn interface is not enabled, the base station can broadcast the information of its own network slice instance. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
一种可能的实施例中，每个基站可维护一个网络切片实例的信息的表。图2c示例性示出了本申请实施例提供的一种基站维护的网络切片实例的信息的示意图，如图2c所示，该表中第一列为基站标识，可以填该基站的邻基站的标识，该表中后续部分可包括邻基站对应包括的网络切片实例的信息，网络切片实例的信息可包括网络切片类型、网络切片实例的标识、业务质量等级的标识、业务类型和网络切片实例的参数中的任一个或任多个。可选地，图2c中所示的基站标识也可标识为小区标识，即该基站针对每个小区都维护该小区的邻基站的网络切片实例的信息。假设基站均采用全向天线，即一个基站对应一个小区，则图2c中所示的基站标识也可标识为小区标识(cell ID)，小区标识(cell ID)为全局ID，在公共陆地移动网络(Public Land Mobile Network，PLMN)中可为唯一的。In a possible embodiment, each base station can maintain a table of information for a network slice instance. FIG. 2 is a schematic diagram showing information of a network slice instance maintained by a base station according to an embodiment of the present application. As shown in FIG. 2c, the first column in the table is a base station identifier, and may be filled in a neighboring base station of the base station. And the information of the network slice instance may include the network slice type, the identifier of the network slice instance, the identifier of the service quality level, the service type, and the network slice instance. Any one or more of the parameters. Optionally, the base station identifier shown in FIG. 2c may also be identified as a cell identifier, that is, the base station maintains information about a network slice instance of a neighboring base station of the cell for each cell. Assuming that the base station adopts an omnidirectional antenna, that is, one base station corresponds to one cell, the base station identifier shown in FIG. 2c may also be identified as a cell identifier (cell ID), and the cell identifier (cell ID) is a global ID, in a public land mobile network. (Public Land Mobile Network, PLMN) can be unique.
图2d示例性示出了本申请实施例提供的一种选择目标基站的方法流程示意图，如图2d所示，该方法包括：FIG. 2d is a schematic flowchart showing a method for selecting a target base station according to an embodiment of the present application. As shown in FIG. 2d, the method includes:
步骤221，邻基站和源基站中的每个基站广播自己的网络切片实例的信息；该步骤可在步骤226之前的任一个步骤执行即可，不是必须放在步骤222之前。也就是说，本申请实施例中广播是“周期性广播”，在时间尺度上向邻基站周期性广播当前本基站最新的切片信息，不局限于步骤顺序。源基站作切换判决时仅采用当前获取到的邻基站切片信息作判断依据。Step 221: Each of the neighboring base station and the source base station broadcasts information of its own network slice instance; this step may be performed at any step before step 226, and does not have to be placed before step 222. That is to say, in the embodiment of the present application, the broadcast is a "periodic broadcast", and the latest slice information of the current base station is periodically broadcast to the neighboring base station on a time scale, which is not limited to the sequence of steps. When the source base station makes a handover decision, only the currently obtained neighbor base station slice information is used as a judgment basis.
步骤222，源基站向终端下发测量控制；Step 222: The source base station sends measurement control to the terminal.
步骤223，终端执行测量，并得到测量结果；终端根据基站下发的测量控制中的测量 配置消息进行相关测量，并将测量结果上报给基站。终端测量结果中可以包括但不局限于邻基站和源基站的信号质量，比如参考信号接收功率(Reference Signal Receiving Power,RSRP)和参考信号接收质量(ReferenceSignalReceivingQuality，RSRQ)；Step 223: The terminal performs the measurement, and obtains the measurement result. The terminal performs the related measurement according to the measurement configuration message in the measurement control sent by the base station, and reports the measurement result to the base station. The terminal measurement result may include, but is not limited to, the signal quality of the neighboring base station and the source base station, such as Reference Signal Receiving Power (RSRP) and Reference Signal Receiving Quality (RSRQ);
步骤224，终端向源基站上报所测量得到的测量结果；Step 224: The terminal reports the measured measurement result to the source base station.
步骤225，源基站根据测量结果判断终端是否需要进行切换；如果不需要，则结束当前流程，即终端继续留在源基站；若需要，则执行步骤226； Step 225, the source base station determines whether the terminal needs to perform handover according to the measurement result; if not, the current process is terminated, that is, the terminal continues to remain at the source base station; if necessary, step 226 is performed;
步骤226，源基站执行从源基站的邻基站中确定出目标基站； Step 226, the source base station performs determining the target base station from the neighboring base stations of the source base station;
步骤227，终端执行切换流程，以使终端切换至目标基站。In step 227, the terminal performs a handover procedure to cause the terminal to handover to the target base station.
上述步骤225中，源基站根据测量结果确定是否触发终端的切换，具体如何确定有多种方案，本申请实施例提供以下示例a1至示例a7等几种确定需要触发终端的切换的示例。In the foregoing step 225, the source base station determines whether to trigger the handover of the terminal according to the measurement result. Specifically, how to determine that there are multiple solutions, the embodiment of the present application provides the following examples, such as the example a1 to the example a7, to determine the handover of the terminal to be triggered.
本申请实施例具有通用性：信号质量依然需要考虑，而5G网络切片延用LTE的载波聚合技术，即同一个UE接入同一个切片实例，根据资源调度策略可能会被分配接入至不同频段的载波(频率)。也就是说，相邻基站同一网络切片实例可部署在不同的载波频段。意味着终端在从属于某一网络切片实例且业务不中断的情况下，从一个基站切换至另一个基站，工作频率可能会发生变化。The embodiments of the present application are versatile: the signal quality still needs to be considered, and the 5G network slice is extended by the LTE carrier aggregation technology, that is, the same UE accesses the same slice instance, and may be allocated to different frequency bands according to the resource scheduling policy. Carrier (frequency). That is to say, the same network slice instance of the neighboring base station can be deployed in different carrier frequency bands. This means that if the terminal is subordinate to a certain network slice instance and the service is not interrupted, switching from one base station to another, the operating frequency may change.
示例a1：源基站的信号的质量(终端工作在某一载波上)良好，比如高于预设的信号质量门限，即终端在源基站获取的服务性能良好，但当处于频率优先级的切换中，例如终端的制式限定了工作在某个频段更节能/高效，可能会触发异频(相同切片实例不同载波)测量和切换。Example a1: The quality of the signal of the source base station (the terminal works on a certain carrier) is good, for example, higher than the preset signal quality threshold, that is, the service performance of the terminal acquired at the source base station is good, but when the frequency priority is switched, For example, the terminal's standard defines that working in a certain frequency band is more energy efficient/efficient, and may trigger the measurement and switching of the different frequency (the same slice instance different carriers).
示例a2：源基站的信号的质量(终端工作在某一载波上)不好，比如低于预设的信号质量门限，即终端在源基站获取的服务性能不好，但当处于频率优先级的切换中，例如终端的制式限定了工作在某个频段更节能/高效，可能会触发异频(相同切片实例不同载波)测量和切换。Example a2: The quality of the signal of the source base station (the terminal works on a certain carrier) is not good, such as lower than the preset signal quality threshold, that is, the service performance of the terminal acquired at the source base station is not good, but when it is in the frequency priority In handover, for example, the terminal's standard defines that working in a certain frequency band is more energy-efficient/efficient, and may trigger measurement and switching of different frequencies (same carrier example different carriers).
示例a3：源基站的信号的质量(终端工作在某一载波上)不好，比如低于预设的信号质量门限，即终端在源基站获取的服务性能不好，但若邻基站的信号的质量(终端工作在某一载波上)高于预设的信号质量门限，则确定终端需进行切换。Example a3: The quality of the signal of the source base station (the terminal works on a certain carrier) is not good, such as lower than the preset signal quality threshold, that is, the service performance of the terminal acquired at the source base station is not good, but if the signal of the neighboring base station is The quality (the terminal works on a certain carrier) is higher than the preset signal quality threshold, and it is determined that the terminal needs to be switched.
示例a4：当邻基站的信号质量(相同切片实例不同载波)高于一定门限，源基站触发切换(至同一切片实例不同载波的)请求，即确定终端需进行切换。Example a4: When the signal quality of the neighboring base station (the same slice instance different carrier) is higher than a certain threshold, the source base station triggers a handover (to the same slice instance different carrier) request, that is, determines that the terminal needs to perform handover.
示例a5，当源基站的信号质量低于一定门限，同时邻基站的信号质量(相同切片实例不同载波)高于一定门限，源基站触发切换(至同一切片实例不同载波的)请求，即确定终端需进行切换。In example a5, when the signal quality of the source base station is lower than a certain threshold, and the signal quality of the neighboring base station (the same slice instance different carrier) is higher than a certain threshold, the source base station triggers a handover (to the same slice instance different carrier) request, that is, determines the terminal. Need to switch.
示例a6，当异***邻基站的信号质量(相同业务类型，相同业务质量等级)高于一定门限，源基站触发切换(至异***同业务类型同业务质量等级)请求，即确定终端需进行切换，即确定终端需进行切换。该示例中，以增强型移动互联网(eMBB,Enhance Mobile Broadband，eMBB)网络切片的通话业务为例，LTE作为异***对5G网络来说可以看做是另一张网络切片。In the example a6, when the signal quality (the same service type, the same service quality level) of the neighboring base station of the different system is higher than a certain threshold, the source base station triggers the handover (the same service quality type with the service type), that is, the terminal needs to perform the handover. That is, it is determined that the terminal needs to be switched. In this example, the VoIP service of the Enhanced Mobile Internet Broadband (eMBB) network slice is taken as an example. LTE as a different system can be regarded as another network slice for the 5G network.
示例a7，源基站的信号质量低于一定门限，而异***邻基站的信号质量(相同业务类型，相同业务质量等级)高于一定门限，源基站触发切换(至异***同业务类型同业务质量等级)请求，即确定终端需进行切换。Example a7, the signal quality of the source base station is lower than a certain threshold, and the signal quality of the neighboring base station of the different system (the same service type, the same service quality level) is higher than a certain threshold, and the source base station triggers the handover (the same service quality as the service type of the different system) Level) request, that is, determine that the terminal needs to switch.
通过上述内容可看出，本申请实施例中基站可通过多种判决方案决定终端是否需要切 换，概括来说主要有两种情况，分别考虑信号质量优先和频率优先，在信号质量优先的情况下，若邻基站的信号质量高于源基站，则确定终端需要进行切换。在频率优先的情况下，若邻基站的信号质量低于源基站，仍启动异频测量。As can be seen from the above, in the embodiment of the present application, the base station can determine whether the terminal needs to be switched through multiple decision schemes. Generally speaking, there are mainly two situations, considering signal quality priority and frequency priority, respectively, in the case of signal quality priority. If the signal quality of the neighboring base station is higher than that of the source base station, it is determined that the terminal needs to perform handover. In the case of frequency priority, if the signal quality of the neighboring base station is lower than that of the source base station, the inter-frequency measurement is still started.
本申请实施例中无论采用哪种判决测量，若判断终端需要切换时，M个邻基站中一定存在N个准目标基站；N个准目标基站中的每个准目标基站满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优。举例来说，在信号质量优先的情况下，可将邻基站中信号质量高于源基站的邻基站确定为准目标基站。在频率优先的情况下，可将需求的网络切片实例所工作在的特定频段上的邻基站确定为准目标基站。Regardless of which decision measurement is used in the embodiment of the present application, if it is determined that the terminal needs to be handed over, there must be N quasi-target base stations among the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: terminal access The quasi-target base station performs better than the service obtained by accessing the current serving base station. For example, in the case that the signal quality is prioritized, the neighboring base station whose signal quality is higher than the source base station in the neighboring base station may be determined as the quasi-target base station. In the case of frequency prioritization, the neighbor base station on the particular frequency band in which the required network slice instance operates may be determined as the quasi-target base station.
本申请实施例从准目标基站中寻找与终端对应的网络切片实例的信息匹配的准目标基站，若不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站，则需要进行网络切片实例的重配置，一种可选地方案为，从服务性能更优的邻基站中找出一个基站作为目标基站；本申请实施例还提供其它实施例，下面进行详细描述。In the embodiment of the present application, the quasi-target base station that matches the information of the network slice instance corresponding to the terminal is searched from the quasi-target base station, and if there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, For the reconfiguration of the network sharding instance, an alternative solution is to find a base station as the target base station from the neighboring base stations with better service performance. Other embodiments are provided in the embodiments of the present application, which are described in detail below.
可选地，M个邻基站中存在N个准目标基站；N个准目标基站中的每个准目标基站满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数。源基站根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站，包括：若不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站，则：针对N个准目标基站中的每个准目标基站，从准目标基站包括的网络切片实例的信息中确定出：与终端对应的网络切片实例的信息的相似度最高的网络切片实例的信息，以及相似度最高的网络切片实例的信息与终端对应的网络切片实例的信息的相似度；根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站；其中，准目标基站的网络切片实例的信息与终端对应的网络切片实例的信息的相似度是根据该两个网络切片实例的信息中包括的网络切片实例的参数的参数类型和参数值确定的。如此，当不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站时，可以选择相似度最高的网络切片实例进行重配置，如此，网络切片实例的重配置过程进行变动的参数项尽可能的少，且参数的值的变动范围也尽可能的小，进一步可加快重配置速率。Optionally, there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition that: the terminal access quasi-target base station has better service performance than the access to the current serving base station; N is a positive integer not greater than M. The source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base stations to be handed over by the M neighboring base stations, including: If there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then: for each of the N quasi-target base stations, from the information of the network slice instance included in the quasi-target base station Determining: the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the similarity between the information of the network slice instance with the highest similarity and the information of the network slice instance corresponding to the terminal; The similarity of the target base station, the target base station to be switched by the terminal is determined from the N quasi-target base stations; wherein the similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is based on the two The parameter type and parameter value of the parameters of the network slice instance included in the information of the network slice instance Given. In this manner, when there is no quasi-target base station that matches the information of the network slice instance and the information of the network slice instance corresponding to the terminal, the network slice instance with the highest similarity can be selected for reconfiguration. Thus, the reconfiguration process of the network slice instance changes. The parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
举例来说，确定终端需要进行切换时，根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站。比如可以先筛选出服务性能更优的准目标基站，若不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站，则找出每个准目标基站上与终端对应的网络切片实例的信息相似度最高的网络切片实例的信息。或者，确定终端需要进行切换时可先确定出是否存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的邻基站，若存在，则将这些邻基站中服务性能更优的邻基站确定为准目标基站。For example, when determining that the terminal needs to perform handover, determining the terminal from the M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. The target base station to be switched. For example, the quasi-target base station with better service performance can be selected first. If there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then the corresponding target base station is found to correspond to the terminal. The information of the network slice instance with the highest information similarity of the network slice instance. Alternatively, when determining that the terminal needs to perform handover, it may first determine whether there is a neighboring base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, and if yes, determine the neighboring base station with better service performance among the neighboring base stations. For the target base station.
本申请实施例中计算相似度的方案有多种，比如确定出待计算的两个网络切片实例中包括的网络切片实例的参数中的参数类型，比如图2b中各个层中包括的模块的类型，比如图2b中网络切片实例211中PDCP层包括三个模块，而网络切片实例212中的PDCP层包括一个模块；还需要确定出待计算的两个网络切片实例中包括的网络切片实例的参数中的参数值，比如图2b中网络切片实例211中PHY层TTI为1ms，而网络切片实例212中的PHY层TTI为0.5ms。将两个网络切片实例中包括的网络切片实例的参数的参数类型进行比较，看看相差多少个参数类型，再将每个参数类型的参数值比较，看看相差多少， 将这些存在差别的项进行加权相加等计算，即确定出两个网络切片实例的相似度。比如图2b中，经过比对，网络切片实例211与网络切片实例213之间的相似度大于网络切片实例211与网络切片实例212之间的相似度。There are various solutions for calculating the similarity in the embodiment of the present application, such as determining a parameter type in a parameter of a network slice instance included in two network slice instances to be calculated, such as a type of a module included in each layer in FIG. 2b. For example, in the network slice instance 211 in FIG. 2b, the PDCP layer includes three modules, and the PDCP layer in the network slice instance 212 includes one module; and the parameters of the network slice instance included in the two network slice instances to be calculated are also determined. The parameter value in the network, such as the PHY layer TTI in the network slice instance 211 in FIG. 2b is 1 ms, and the PHY layer TTI in the network slice instance 212 is 0.5 ms. Compare the parameter types of the parameters of the network slice instance included in the two network slice instances to see how many parameter types differ, and then compare the parameter values of each parameter type to see how many differences are made. The weighted addition and other calculations are performed to determine the similarity between the two network slice instances. For example, in FIG. 2b, the similarity between the network slice instance 211 and the network slice instance 213 is greater than the similarity between the network slice instance 211 and the network slice instance 212.
本发明实施例中根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站，有多种方案，比如图2e提供了一种基于图2d的选择目标基站的方法流程示意图，如图2e所示，采用下述方法流程实现确定目标基站的步骤226：In the embodiment of the present invention, according to the similarity degree of each quasi-target base station, the target base station to be switched by the terminal is determined from the N quasi-target base stations, and there are various schemes, for example, FIG. 2e provides a selection target based on FIG. 2d. A schematic diagram of a method flow of a base station, as shown in FIG. 2e, using the following method flow to implement step 226 of determining a target base station:
步骤251，源基站向准目标基站发送网络切片实例重配置请求；Step 251: The source base station sends a network slice instance reconfiguration request to the quasi-target base station.
步骤252，准目标基站在执行了网络切片实例重配置之后，分两种情况，第一种配置成功的情况，可向源基站反馈网络切片实例重配置成功响应，第二种配置失败的情况，可向源基站反馈网络切片实例重配置失败响应，或者不反馈任何信息，源基站在预设时长内接收不到响应消息，即判断重配置失败；Step 252: After the network segment instance reconfiguration is performed, the quasi-target base station is divided into two cases. If the first configuration is successful, the network node instance reconfiguration success response may be fed back to the source base station, and the second configuration fails. The network slice instance reconfiguration failure response may be fed back to the source base station, or no information is fed back, and the source base station does not receive the response message within the preset time period, that is, determines that the reconfiguration fails;
步骤253，源基站可从接收到网络切片实例重配置成功响应的几个准目标基站中确定出目标基站。Step 253: The source base station may determine the target base station from among several quasi-target base stations that receive the network slice instance reconfiguration success response.
可选地，上述方法步骤可适用于Xn接口，若采用NGx接口，则源基站和准目标基站之间的通信可通过MME透传。图2f提供了一种基于图2d的选择目标基站的方法流程示意图，如图2f所示，采用下述方法流程实现确定目标基站的步骤226：Optionally, the foregoing method steps are applicable to the Xn interface. If the NGx interface is used, the communication between the source base station and the quasi-target base station can be transparently transmitted through the MME. FIG. 2f is a schematic flowchart of a method for selecting a target base station based on FIG. 2d. As shown in FIG. 2f, step 226 of determining a target base station is implemented by using the following method flow:
步骤261，源基站向MME发送网络切片实例重配置请求；Step 261: The source base station sends a network slice instance reconfiguration request to the MME.
步骤262，MME向准目标基站透传网络切片实例重配置请求；Step 262: The MME transparently transmits a network slice instance reconfiguration request to the quasi-target base station.
步骤263，准目标基站在执行了网络切片实例重配置之后，分两种情况，第一种配置成功的情况，可向MME反馈网络切片实例重配置成功响应，第二种配置失败的情况，可向MME反馈网络切片实例重配置失败响应，或者不反馈任何信息；Step 263: After the network segment instance reconfiguration is performed, the quasi-target base station may be divided into two cases. If the first configuration is successful, the network slice instance reconfiguration success response may be fed back to the MME, and the second configuration fails. Feeding back to the MME a network slice instance reconfiguration failure response, or not feeding back any information;
步骤264，MME若接收到的响应信息，则将接收到的网络切片实例重配置成功响应或者网络切片实例重配置失败响应透传给源基站；Step 264: If the MME receives the response information, the MME may retransmit the received network slice instance reconfiguration success response or the network slice instance reconfiguration failure response to the source base station.
步骤253，源基站可从接收到网络切片实例重配置成功响应的几个准目标基站中确定出目标基站，另一种情况下，源基站在预设时长内接收不到响应消息，即判断重配置失败。Step 253: The source base station may determine the target base station from the several quasi-target base stations that receive the network slice instance reconfiguration success response. In another case, the source base station does not receive the response message within the preset duration, that is, the weight is determined. Configuration failed.
为了提高重配置效率，可选地，根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站，包括：将N个准目标基站中：相似度最高的准目标基站确定为目标基站；根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站之后，还包括：向N个准目标基站中相似度最高的准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；若确定网络切片实例重配置失败，则向N个准目标基站中除已发送过网络切片实例重配置请求的准目标基站之外的准目标基站中：相似度最高的准目标基站发送网络切片实例重配置请求，直至接收到网络切片实例重配置成功响应；将接收到的网络切片实例重配置成功响应对应的准目标基站重新确定为目标基站；其中，网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息。重配置会选择相似度最高的的网络切片实例操作，可以提高重配置的速率，例如TTI的大小从1ms调整至0.9ms，这个动作对基站的空口来说，在硬件环境支持的情况下，这只是一个软件参数配置上的修改，非常的快，时间可以忽略不计。In order to improve the reconfiguration efficiency, the target base station to be handed over by the terminal is determined from the N quasi-target base stations according to the similarity degree of each quasi-target base station, including: among the N quasi-target base stations: the highest similarity The quasi-target base station is determined as the target base station; after determining the target base station to be handed over by the N quasi-target base stations according to the similarity degree of each quasi-target base station, the method further includes: the highest similarity to the N quasi-target base stations The quasi-target base station sends a network slice instance reconfiguration request; wherein the network slice instance reconfiguration request includes information about the network slice instance corresponding to the terminal; if it is determined that the network slice instance reconfiguration fails, the N target base stations are removed. In the quasi-target base station outside the quasi-target base station that has sent the network slice instance reconfiguration request: the quasi-target base station with the highest similarity transmits the network slice instance reconfiguration request until receiving the network slice instance reconfiguration success response; the received The network slice instance reconfiguration success response corresponding to the quasi-target base station is re-determined as the target base station; The network segment instance reconfiguration request is used to reconfigure the network slice instance included by the quasi-target base station that receives the network slice instance reconfiguration request, so that the reconfigured network slice instance is compatible with the network slice instance corresponding to the terminal. Information. Reconfiguration will select the network slice instance operation with the highest similarity, which can increase the rate of reconfiguration. For example, the size of the TTI is adjusted from 1ms to 0.9ms. This action is for the air interface of the base station, in the case of hardware environment support, this It's just a modification of the software parameter configuration, very fast, and the time is negligible.
举个例子，比如一共有三个准目标基站，依照相似度进行排序，准目标基站1与终端 对应的网络切片实例的信息的相似度是最高的，准目标基站2次之，准目标基站3最小。源基站向准目标基站1发送网络切片实例重配置请求，以使准目标基站1将其上与终端对应的网络切片实例的信息相似度最高的网络切片实例进行重配置。如果确定网络切片实例重配置失败，比如接收到网络切片实例重配置失败响应或者在预设时长内没有收到网络切片实例重配置成功响应，则向N个准目标基站中除已发送过网络切片实例重配置请求的准目标基站之外的准目标基站中：相似度最高的准目标基站发送网络切片实例重配置请求，即向准目标基站2发送网络切片实例重配置请求，如果准目标基站2重配置成功，则将准目标基站2确定为目标基站。如果准目标基站2也重配置失败，则继续向准目标基站3发送网络切片实例重配置请求，如果准目标基站3重配置成功，则将准目标基站3确定为目标基站。如果准目标基站3也重配置失败，则确定不出目标基站，结束流程。For example, if there are three quasi-target base stations, sorted according to similarity, the similarity of the information of the network slice instance corresponding to the quasi-target base station 1 and the terminal is the highest, and the quasi-target base station 2 times, the quasi-target base station 3 The smallest. The source base station sends a network slice instance reconfiguration request to the quasi-target base station 1 to enable the quasi-target base station 1 to reconfigure the network slice instance with the highest information similarity of the network slice instance corresponding to the terminal. If it is determined that the network slice instance reconfiguration fails, for example, the network slice instance reconfiguration failure response is received or the network slice instance reconfiguration success response is not received within the preset time period, the network slice is sent to the N quasi-target base stations. In the quasi-target base station other than the quasi-target base station of the instance reconfiguration request: the quasi-target base station with the highest similarity transmits a network slice instance reconfiguration request, that is, sends a network slice instance reconfiguration request to the quasi-target base station 2, if the quasi-target base station 2 If the reconfiguration is successful, the quasi-target base station 2 is determined as the target base station. If the quasi-target base station 2 also fails to reconfigure, the network slice instance reconfiguration request is continued to be sent to the quasi-target base station 3. If the quasi-target base station 3 is successfully reconfigured, the quasi-target base station 3 is determined as the target base station. If the quasi-target base station 3 also fails to reconfigure, it is determined that the target base station is not available, and the flow is ended.
更进一步，如果为了提高重配置成功的几率，以及提高终端切换的可靠性，可以进行多重准备，可选地，根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站，包括：向N个准目标基站中：相似度从高到低的顺序排序在前P位的P个准目标基站中的每个准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；P为不大于N的正整数；网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息；若接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站。Further, if the probability of successful reconfiguration is improved, and the reliability of the handover of the terminal is improved, multiple preparations may be performed. Optionally, the terminal is determined from the N quasi-target base stations according to the similarity degree of each quasi-target base station. The target base station to be switched includes: to the N quasi-target base stations: the order of similarity from high to low, the network slice instance reconfiguration request is sent by each of the P target base stations of the previous P bits; The network slice instance reconfiguration request includes information about a network slice instance corresponding to the terminal; P is a positive integer not greater than N; and the network slice instance reconfiguration request is used to enable the target base station to receive the network slice instance reconfiguration request Performing a reconfiguration operation on the network slice instance included in the network, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal; and receiving at least one network slice instance reconfiguration successfully returned by the P target base stations And determining a target from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response Base station.
相应地，可从接收到网络切片实例重配置成功响应的准目标基站中找出一个作为目标基站，或者为了提高可靠性，找出多个作为目标基站。可选地，若接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站，包括：若接收到P中L个准目标基站中的每个准目标基站分别返回的网络切片实例重配置成功响应，则：将L个准目标基站中终端接入后服务性能最优的准目标基站确定为目标基站；L为不大于P的正整数。Accordingly, one of the quasi-target base stations receiving the network slice instance reconfiguration success response can be found as the target base station, or in order to improve the reliability, a plurality of target base stations can be found. Optionally, if at least one network slice instance reconfiguration success response returned by the P quasi-target base stations is received, the target base station is determined from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response, including: To the network slice instance reconfiguration success response returned by each of the L quasi-target base stations in P, the target retargeting base station with the best service performance after terminal access in the L quasi-target base stations is determined as the target Base station; L is a positive integer not greater than P.
为了保证时延最短，另一种可选地方案为，若接收到P个准目标基站中的一个基站返回的网络切片实例重配置成功响应，则将该最早接收到的网络切片实例重配置成功响应对应的准目标基站确定为目标基站，并向P个准目标基站中剩余的P-1个准目标基站发送重配置取消命令；其中，重配置取消命令用于使剩余的P-1个准目标基站取消对网络切片实例的重配置操作。具体来说，源基站向多个准目标基站发送网络切片实例重配置请求，一旦接收到一个网络切片实例重配置成功响应，即该网络切片实例重配置成功响应为接收到的第一个网络切片实例重配置成功响应，说明该网络切片实例重配置成功响应对应的准目标基站的时延较短，则将该网络切片实例重配置成功响应对应的准目标基站确定为目标基站。如此，可以避免其余的P-1个准目标基站进行重配置，节省网络资源消耗。In order to ensure the shortest delay, another optional solution is: if the network slice instance reconfiguration successfully returned by one of the P target base stations is received, the oldest received network slice instance is reconfigured successfully. Responding to the corresponding quasi-target base station as the target base station, and transmitting a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P-1 quasi The target base station cancels the reconfiguration operation on the network slice instance. Specifically, the source base station sends a network slice instance reconfiguration request to the plurality of quasi-target base stations, and upon receiving a network slice instance reconfiguration success response, the network slice instance reconfiguration success response is the received first network slice. The instance reconfiguration succeeds in response, indicating that the network segment instance reconfiguration success response corresponding to the quasi-target base station has a short delay, and the quasi-target base station corresponding to the network slice instance reconfiguration success response is determined as the target base station. In this way, the remaining P-1 quasi-target base stations can be avoided to be reconfigured, thereby saving network resource consumption.
一种可能的实现方式中，网络切片实例重配置成功响应中包括重配置后网络切片实例的信息；其中，重配置后网络切片实例的信息所指示的网络切片实例兼容终端对应的网络切片实例的信息所指示的网络切片实例所承载的业务；网络切片实例重配置成功响应是目标基站对该基站已有的网络切片实例进行重配置后得到的。可选地，本申请实施例中准目标基站对自身包括的网络切片实例进行重配置后，该重配置后的网络切片实例不仅还可运行该网络切片实例重配置前的所运行的业务，还可兼容终端对应的网络切片实例的信息， 即可运行终端对应的网络切片实例所支持的业务。可选地，准目标基站上重配置后的网络切片实例的标识可以变更，比如变更为与终端对应的网络切片实例的标识相同，也可以不变更。In a possible implementation manner, the network slice instance reconfiguration success response includes the information of the network slice instance after the reconfiguration; wherein the network slice instance indicated by the information of the network slice instance after the reconfiguration is compatible with the network slice instance corresponding to the terminal The service carried by the network slice instance indicated by the information; the network slice instance reconfiguration success response is obtained after the target base station reconfigures the existing network slice instance of the base station. Optionally, in the embodiment of the present application, after the quasi-target base station reconfigures the network slice instance that is included in the network, the reconfigured network slice instance can not only run the service that is run before the network slice instance is reconfigured, but also The information of the network slice instance corresponding to the terminal can be compatible, and the service supported by the network slice instance corresponding to the terminal can be run. Optionally, the identifier of the network slice instance that is reconfigured on the quasi-target base station may be changed, for example, changed to the same as the identifier of the network slice instance corresponding to the terminal, or may not be changed.
若M个邻基站中存在N个准目标基站；N个准目标基站中的每个准目标基站满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数；源基站根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站，包括：若存在将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站，则：将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站确定为目标基站；其中，K为不大于N的正整数。If there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: the terminal access quasi-target base station has better service performance than the access to the current serving base station; N is not a positive integer greater than M; the source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instances of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the terminal needs to be switched from the M neighboring base stations. The target base station includes: if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, then: K matching the information of the network slice instance with the information of the network slice instance corresponding to the terminal The quasi-target base stations are determined as target base stations; wherein K is a positive integer not greater than N.
从M个邻基站中确定出终端需切换的目标基站之后，源基站还可以向目标基站发送切换请求；其中，切换请求中包括终端对应的网络切片实例的信息；源基站接收目标基站返回的切换响应；其中，切换响应中包括终端的待接入的网络切片实例的信息；其中，待接入的网络切片实例的信息所指示的网络切片实例：兼容终端对应的网络切片实例的信息所指示的网络切片实例所承载的业务。从而实现了终端切换至目标基站的过程，且使终端接入目标基站中能够兼容终端对应的网络切片实例的信息的网络切片实例中，保证终端业务的不中断。After determining the target base station to be handed over by the M neighboring base stations, the source base station may further send a handover request to the target base station; where the handover request includes information about the network slice instance corresponding to the terminal; and the source base station receives the handover returned by the target base station. And the information of the network slice instance to be accessed by the terminal, where the network segment instance indicated by the information of the network slice instance to be accessed is indicated by the information of the network slice instance corresponding to the compatible terminal. The service carried by the network slice instance. Therefore, the process of the terminal switching to the target base station is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
本申请实施例中上述内容中确定出的目标基站可为一个，也可为多个，在执行切换过程中将终端接入确定出的一个或多个目标基站中的一个目标基站上。上述步骤227中将终端切换至目标基站有多种方案，比如上述方案，本申请实施例以下内容再提供几种用于执行上述步骤227的方案。图2g示例性示出了本申请实施例提供的一种选择目标基站的以及终端切换的方法流程示意图，如图2g所示，该方法包括：The target base station determined in the foregoing content in the foregoing application may be one or multiple, and the terminal is connected to one of the determined one or more target base stations during the handover process. In the above step 227, there are various solutions for switching the terminal to the target base station, such as the above solution. The following embodiments of the present application further provide several solutions for performing the foregoing step 227. FIG. 2g is a schematic flowchart showing a method for selecting a target base station and a terminal handover according to an embodiment of the present application. As shown in FIG. 2g, the method includes:
步骤271，源基站向目标基站发送切换请求；其中，切换请求中可包括终端对应的网络切片实例的信息，如此，可以告知目标基站所需的网络切片的信息，以使目标基站准确找出终端可接入的网络切片实例；可选地，切换请求中还可包括无线资源控制(Radio Resource Control,RRC)上下文，比如终端能力、当前接入层(Access Stratum，AS)配置和终端的特定无线资源管理信息等等；其中，网络切片实例的信息不一定包括网络切片实例的标识，比如不同的网络切片实例支持一个业务集，同一个业务可以跑在不同的网络切片实例上；Step 271: The source base station sends a handover request to the target base station. The handover request may include information about the network slice instance corresponding to the terminal, so that the information about the network slice required by the target base station may be notified, so that the target base station accurately finds the terminal. Optionally, the handover request may further include a Radio Resource Control (RRC) context, such as a terminal capability, a current access stratum (AS) configuration, and a specific wireless of the terminal. Resource management information and the like; wherein the information of the network slice instance does not necessarily include the identifier of the network slice instance, for example, different network slice instances support one service set, and the same service may run on different network slice instances;
步骤272，目标基站执行资源建立过程；可选地，资源建立过程包括但不局限于为终端分配所需资源，比如频谱资源、计算及存储资源等；Step 272: The target base station performs a resource establishment process. Optionally, the resource establishment process includes, but is not limited to, allocating required resources, such as spectrum resources, computing, and storage resources, to the terminal.
步骤273，目标基站向源基站返回切换请求响应；其中，切换请求响应可包括RRC连接重配置消息移动性控制消息(比如目标小区标识及待终端接入的频率)、通用无线资源配置消息(比如请求进行随机接入的消息)和专用无线资源配置、安全配置和小区无线网络临时标识(Cell Radio Network Temporary Identifier，C-RNTI)(即当UE在某一小区时所用的无线网络临时标识(RNTI Radio Network Tempory Identity，RNTI))。可选地，切换请求响应中还包括网络切片实例的业务类型和业务质量等级等信息；Step 273: The target base station returns a handover request response to the source base station, where the handover request response may include an RRC connection reconfiguration message mobility control message (such as a target cell identifier and a frequency to be accessed by the terminal), and a general radio resource configuration message (such as a message requesting random access) and a dedicated radio resource configuration, a security configuration, and a Cell Radio Network Temporary Identifier (C-RNTI) (ie, a radio network temporary identifier (RNTI) used when the UE is in a certain cell Radio Network Tempory Identity, RNTI)). Optionally, the handover request response further includes information such as a service type and a service quality level of the network slice instance.
步骤274，源基站向终端发送切换命令；源基站可将接收到的切换请求响应透明的转发给终端；Step 274: The source base station sends a handover command to the terminal, and the source base station may transparently forward the received handover request response to the terminal.
步骤275，该步骤可为可选步骤，源基站与目标基站之间进行状态转移；对需要顺序 发包的承载来说，状态转移消息提供序列号和超帧号码(hyper frame number，HFN)(HFN用于限制空口上传输序列号的比特数)，目标基站应把它们分配给第一个还没有分配序列号而必须发送的包。当发送状态转移消息时，源服务基站冻结它的发射机/接收机状态，即停止分配PDCP序列号(Sequence Number，SN)给下行包，停止发送上行包给核心网； Step 275, the step may be an optional step of performing state transition between the source base station and the target base station; for the bearer requiring sequential packet delivery, the state transition message provides a sequence number and a hyper frame number (HFN) (HFN) To limit the number of bits of the transmission sequence number on the air interface, the target base station shall assign them to the first packet that must be transmitted without assigning a sequence number. When the state transition message is sent, the source serving base station freezes its transmitter/receiver state, that is, stops allocating the PDCP sequence number (SN) to the downlink packet, and stops sending the uplink packet to the core network;
步骤276，终端向目标基站发送切换完成的指令，可选地，该切换完成的指令具体是指终端与目标基站完成无线资源控制(Radio Resource Control,RRC)连接重配置、随机接入等过程；Step 276: The terminal sends an instruction to complete the handover to the target base station. Optionally, the instruction for completing the handover specifically refers to a process in which the terminal and the target base station complete radio resource control (RRC) connection reconfiguration and random access.
步骤277，目标基站向MME发送路径转移请求：Step 277: The target base station sends a path transfer request to the MME:
步骤278，MME向目标基站发送路径转移请求响应；Step 278: The MME sends a path transfer request response to the target base station.
步骤279，目标基站向源基站发送释放资源的指令，以使源基站的资源释放。Step 279: The target base station sends an instruction for releasing the resource to the source base station, so that the resources of the source base station are released.
可选地，上述方法步骤可适用于Xn接口，若采用NGx接口，则源基站和准目标基站之间的通信可通过MME透传。图2h提供了本申请实施例提供的一种选择目标基站的以及终端切换的方法流程示意图，如图2h所示，采用下述方法流程实现确定目标基站的步骤227：Optionally, the foregoing method steps are applicable to the Xn interface. If the NGx interface is used, the communication between the source base station and the quasi-target base station can be transparently transmitted through the MME. FIG. 2h is a schematic flowchart of a method for selecting a target base station and a terminal handover according to an embodiment of the present application. As shown in FIG. 2h, step 227 of determining a target base station is implemented by using the following method flow:
步骤281，源基站向MME发送切换请求；其中，切换请求中可包括终端对应的网络切片实例的信息，如此，可以告知目标基站所需的网络切片的信息，以使目标基站准确找出终端可接入的网络切片实例；可选地，切换请求中还可包括无线资源控制(Radio Resource Control,RRC)上下文，比如终端能力、当前AS配置和终端的特定无线资源管理信息等等；其中，网络切片实例的信息不一定包括网络切片实例的标识，比如不同的网络切片实例支持一个业务集，同一个业务可以跑在不同的网络切片实例上；Step 281: The source base station sends a handover request to the MME. The handover request may include information about the network slice instance corresponding to the terminal, so that the information about the network slice required by the target base station may be notified, so that the target base station can accurately find the terminal. The network slice instance of the access; optionally, the handover request may further include a Radio Resource Control (RRC) context, such as a terminal capability, a current AS configuration, and specific radio resource management information of the terminal, and the like; The information of the slice instance does not necessarily include the identifier of the network slice instance. For example, different network slice instances support one service set, and the same service can run on different network slice instances.
步骤282，MME向目标基站透传切换请求；Step 282: The MME transparently transmits a handover request to the target base station.
步骤283，目标基站执行资源建立过程；可选地，资源建立过程包括但不局限于为终端分配所需资源，比如频谱资源、计算及存储资源等；Step 283: The target base station performs a resource establishment process. Optionally, the resource establishment process includes, but is not limited to, allocating required resources, such as spectrum resources, computing, and storage resources, to the terminal.
步骤284，目标基站向MME返回切换请求响应；Step 284: The target base station returns a handover request response to the MME.
步骤285，MME向源基站返回切换请求响应；其中，切换请求响应可包括RRC连接重配置消息移动性控制消息(比如目标小区标识及待终端接入的频率)、通用无线资源配置消息(比如请求进行随机接入的消息)和专用无线资源配置、安全配置和C-RNTI。可选地，切换请求响应中还包括网络切片实例的业务类型和业务质量等级等信息；Step 285: The MME returns a handover request response to the source base station, where the handover request response may include an RRC connection reconfiguration message mobility control message (such as a target cell identifier and a frequency to be accessed by the terminal), and a general radio resource configuration message (such as a request). Messages for random access) and dedicated radio resource configuration, security configuration and C-RNTI. Optionally, the handover request response further includes information such as a service type and a service quality level of the network slice instance.
步骤286，源基站向终端发送切换命令；可选地，源基站可将接收到的切换请求响应透明的转发给终端；Step 286: The source base station sends a handover command to the terminal. Optionally, the source base station may transparently forward the received handover request response to the terminal.
步骤287，该步骤和步骤288可为可选步骤，源基站向MME发送状态转移的指令； Step 287, the step and the step 288 may be an optional step, and the source base station sends an instruction for the state transition to the MME;
步骤288，MME向目标基站透传状态转移的指令；对需要顺序发包的承载来说，状态转移消息提供序列号和超帧号码(hyper frame number，HFN)(HFN用于限制空口上传输序列号的比特数)，目标基站应把它们分配给第一个还没有分配序列号而必须发送的包。当发送状态转移消息时，源服务基站冻结它的发射机/接收机状态，即停止分配PDCP SN给下行包，停止发送上行包给核心网；Step 288: The MME transparently transmits the state transition instruction to the target base station. For the bearer that needs to send the packet sequentially, the state transition message provides a sequence number and a hyper frame number (HFN) (the HFN is used to limit the transmission sequence number on the air interface. The number of bits), the target base station should assign them to the first packet that must be sent without assigning a sequence number. When the state transition message is sent, the source serving base station freezes its transmitter/receiver state, that is, stops allocating the PDCP SN to the downlink packet, and stops sending the uplink packet to the core network;
步骤289，终端向目标基站发送切换完成的指令，可选地，该切换完成的指令具体是指终端与目标基站完成无线资源控制(Radio Resource Control,RRC)连接重配置、随机接入等过程；Step 289: The terminal sends an instruction to complete the handover to the target base station. Optionally, the instruction for completing the handover specifically refers to a process in which the terminal and the target base station complete radio resource control (RRC) connection reconfiguration and random access.
步骤290，目标基站向MME发送切换通知，用于通知进行路径转移；Step 290: The target base station sends a handover notification to the MME, to notify that the path is forwarded;
步骤291，目标基站向源基站发送释放资源的指令，以使源基站的资源释放。Step 291: The target base station sends an instruction for releasing the resource to the source base station, so that the resources of the source base station are released.
本申请实施例可适用未来5G网络中的网络切片实例架构。The embodiment of the present application can be applied to a network slice instance architecture in a future 5G network.
图3示例性示出了本申请实施例提供的一种选择目标基站的装置的结构示意图。FIG. 3 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present application.
基于相同构思，本申请实施例提供一种选择目标基站的装置300，用于执行上述方法中的任一个方案。如图3所示，选择目标基站的装置300包括处理器301、收发器302、存储器303和通信接口304；其中，处理器301、收发器302、存储器303和通信接口304通过总线305相互连接。Based on the same concept, the embodiment of the present application provides an apparatus 300 for selecting a target base station, for performing any one of the foregoing methods. As shown in FIG. 3, the apparatus 300 for selecting a target base station includes a processor 301, a transceiver 302, a memory 303, and a communication interface 304; wherein the processor 301, the transceiver 302, the memory 303, and the communication interface 304 are connected to one another via a bus 305.
总线305可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图3中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。The bus 305 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 3, but it does not mean that there is only one bus or one type of bus.
存储器303可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器303还可以包括上述种类的存储器的组合。The memory 303 may include a volatile memory such as a random-access memory (RAM); the memory may also include a non-volatile memory such as a flash memory. A hard disk drive (HDD) or a solid-state drive (SSD); the memory 303 may also include a combination of the above types of memories.
通信接口304可以为有线通信接入口，无线通信接口或其组合，其中，有线通信接口例如可以为以太网接口。以太网接口可以是光接口，电接口或其组合。无线通信接口可以为WLAN接口。The communication interface 304 can be a wired communication access port, a wireless communication interface, or a combination thereof, wherein the wired communication interface can be, for example, an Ethernet interface. The Ethernet interface can be an optical interface, an electrical interface, or a combination thereof. The wireless communication interface can be a WLAN interface.
处理器301可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。处理器301还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。The processor 301 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. The processor 301 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
可选地，存储器303还可以用于存储程序指令，处理器301调用该存储器303中存储的程序指令，可以执行上述方案中所示实施例中的一个或多个步骤，或其中可选的实施方式，使得选择目标基站的装置300实现上述方法中选择目标基站的装置的功能。Optionally, the memory 303 can also be used to store program instructions, and the processor 301 calls the program instructions stored in the memory 303 to perform one or more steps in the embodiment shown in the above scheme, or an optional implementation thereof. In a manner, the apparatus 300 for selecting a target base station implements the function of the apparatus for selecting the target base station in the above method.
处理器301用于根据执行存储器存储的指令，并控制收发器302进行信号接收和信号发送，当处理器301执行存储器存储的指令时，选择目标基站的装置300用于执行下述内容。The processor 301 is configured to control the transceiver 302 to perform signal reception and signal transmission according to an instruction to execute the memory storage. When the processor 301 executes the memory storage instruction, the apparatus 300 of the target base station is selected to perform the following.
处理器301，用于若确定终端需进行基站切换，则：根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M为正整数；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。The processor 301 is configured to: if it is determined that the terminal needs to perform the base station handover, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighbors The base station determines the target base station to which the terminal needs to be handed over; where M is a positive integer; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication information indicating the service type and the service quality level of the network slice instance indicated by the information of the network slice instance.
本申请实施例中，源基站若确定终端需进行基站切换，则根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。由于源基站是根据M个 邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息选择的目标基站，因此选择目标基站时既考虑到了邻基站的信号质量，也考虑到了邻基站上的网络切片实例的信息，从而可使选择出的目标基站更好的适应网络切片实例应用场景。进而，可避免选择出的目标基站与终端的网络切片实例的信息不匹配的问题。In the embodiment of the present application, if the source base station determines that the terminal needs to perform the base station handover, the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance. Since the source base station is a target base station selected according to the signal quality of the M neighboring base stations, the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station is selected to take into account the signal of the neighbor base station. The quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
本申请实施例中网络切片实例和网络切片的定义参见上述内容，在此不再赘述。网络切片和网络切片实例的关系可为1：R，R为正整数；即同一类型的网络切片下面有R种不同的网络切片实例。For the definitions of the network slice instance and the network slice in the embodiment of the present application, refer to the foregoing content, and details are not described herein again. The relationship between the network slice and the network slice instance may be 1:R, and R is a positive integer; that is, there are R different network slice instances under the same type of network slice.
也就是说，本申请实施例中网络切片实例是一系列物理和逻辑资源的集合。本申请实施例中的源基站、目标基站或邻基站中任一个基站的网络切片实例的信息具体是指该基站上所包括的网络切片实例中网络切片实例的信息。本申请实施例中，网络切片实例上面跑的是业务，而终端对应的网络切片实例的信息指的是该终端所使用的业务对应的网络切片实例的信息。That is, the network slice instance in this embodiment is a collection of physical and logical resources. The information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station. In the embodiment of the present application, the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
在根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站之前，收发器302，还用于：通过有线或无线的形式接收M个邻基站的网络切片实例的信息；收发器302，还用于：通过有线或无线的形式广播源基站的网络切片实例的信息。可选地，网络切片实例的信息包括：网络切片类型(Network slice type)、网络切片实例的标识(Slice Instance Identity，Slice ID)、业务质量等级的标识(Quality of Service Class Identifier，QCI)、业务类型(Service Type)和网络切片实例的参数(slice parameters)中的任一个或任多个。一种可选地的方案中，若基站间已经采用Xn口有线连接，则基站会优先选择Xn口广播自己的网络切片实例的信息，如此可省时省力；若保留基站间Xn接口未开通，则基站可走空口广播自己的网络切片实例的信息。如此可使基站获取邻基站的网络切片实例的信息。The transceiver 302 is configured before the target base station to be handed over by the M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. And the method is further configured to: receive the information of the network slice instance of the M neighboring base stations by using a wired or wireless form; and the transceiver 302 is further configured to: broadcast the information of the network slice instance of the source base station by using a wired or wireless form. Optionally, the information of the network slice instance includes: a network slice type, a slice Instance Identity (Slice ID), a quality of service class identifier (QCI), and a service. Any one or more of a Service Type and a slice parameter of a network slice instance. In an optional solution, if the Xn interface is connected between the base stations, the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; if the Xn interface between the base stations is not opened, Then, the base station can broadcast the information of its own network slice instance in the air interface. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
本申请实施例中M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息可以但不限于包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。比如每个网络切片实例的信息可直接包括网络切片实例的业务类型和业务质量等级；也可包括网络切片实例的标识，进而可以根据网络切片实例的标识查出业务类型和业务质量等级。The information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal in the embodiment of the present application may be, but not limited to, including: indicating the information of the network slice instance. Indicates the service type and quality of service level of the network slice instance. For example, the information of each network slice instance may directly include the service type and the service quality level of the network slice instance. The identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
一种可选地实施方式中M个邻基站中存在N个准目标基站；N个准目标基站中的每个准目标基站满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数；处理器301，在根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站时，用于：若不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站，则针对N个准目标基站中的每个准目标基站，从准目标基站包括的网络切片实例的信息中确定出：与终端对应的网络切片实例的信息的相似度最高的网络切片实例的信息，以及相似度最高的网络切片实例的信息与终端对应的网络切片实例的信息的相似度；根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站；其中，准目标基站的网络切片实例的信息与终端对应的网络切片实例的信息的相似度是根据该两个网络切片实例的信息中包括的网络切片实例的参数的参数类型和参数值确定的。如此，当不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站时，可以选择相似度最高的网络切片实例进行重配置，如此，网络切片实例 的重配置过程进行变动的参数项尽可能的少，且参数的值的变动范围也尽可能的小，进一步可加快重配置速率。In an optional implementation manner, there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: the terminal accesses the quasi-target base station and the access to the current serving base station The performance is better; N is a positive integer not greater than M; the processor 301, based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M When the target base station to be handed over by the terminal is determined by the neighboring base stations, if there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then for each of the N quasi-target base stations The quasi-target base station determines, from the information of the network slice instance included in the quasi-target base station, the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the information of the network slice instance with the highest similarity The similarity of the information of the network slice instance corresponding to the terminal; determining from the N quasi-target base stations according to the similarity degree of each quasi-target base station The target base station to be switched by the terminal; wherein the similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is a parameter of the parameter of the network slice instance included in the information of the two network slice instances Type and parameter values are determined. In this manner, when there is no quasi-target base station that matches the information of the network slice instance and the information of the network slice instance corresponding to the terminal, the network slice instance with the highest similarity can be selected for reconfiguration. Thus, the reconfiguration process of the network slice instance changes. The parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
为了提高重配置效率，一种可选地实施方式中处理器301，在根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站时，用于：将N个准目标基站中：相似度最高的准目标基站确定为目标基站；收发器302，在处理器301根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站之后，还用于：向N个准目标基站中相似度最高的准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；若确定网络切片实例重配置失败，则向N个准目标基站中除已发送过网络切片实例重配置请求的准目标基站之外的准目标基站中：相似度最高的准目标基站发送网络切片实例重配置请求，直至接收到网络切片实例重配置成功响应；处理器301，还用于：将通过收发器302接收到的网络切片实例重配置成功响应对应的准目标基站重新确定为目标基站；其中，网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息。In order to improve the reconfiguration efficiency, the processor 301 is configured to: when determining the target base station to be handed over by the N quasi-target base stations according to the similarity degree of each quasi-target base station, for: Determining, among the N quasi-target base stations, the quasi-target base station with the highest similarity as the target base station; and the transceiver 302 determining, according to the similarity corresponding to each quasi-target base station, the terminal needs from the N quasi-target base stations. After the target base station is switched, the network slice instance reconfiguration request is sent to the quasi-target base station with the highest similarity among the N quasi-target base stations, where the network slice instance reconfiguration request includes the information of the network slice instance corresponding to the terminal. If it is determined that the network slice instance reconfiguration fails, to the quasi-target base stations other than the quasi-target base station that has sent the network slice instance reconfiguration request to the N quasi-target base stations: the quasi-target base station with the highest similarity transmits the network slice The instance reconfiguration request is received until the network slice instance reconfiguration is successfully received. The processor 301 is further configured to: pass the transceiver 302. The received network slice instance reconfiguration success response corresponding to the quasi-target base station is re-determined as the target base station; wherein the network slice instance reconfiguration request is used to enable the quasi-target base station receiving the network slice instance reconfiguration request to include the network itself The slice instance performs a reconfiguration operation, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal.
为了更好的提高重配置成功的几率，以及提高终端切换的可靠性，可以进行多重准备，可选地，所述处理器301，在根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站时，具体用于：通过所述收发器302向所述N个准目标基站中：相似度从高到低的顺序排序在前P位的P个准目标基站中的每个准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；P为不大于N的正整数；网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息若通过收发器302接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站。In order to improve the probability of successful reconfiguration and improve the reliability of the handover, multiple preparations may be performed. Optionally, the processor 301 selects the similarity according to each of the quasi-target base stations. When the target base stations to be handed over by the terminal are determined, the specific use of the transceivers 302 is performed by the transceiver 302 to the N target base stations: the order of similarity is high to low. Each of the P target multi-target base stations of the P-bit transmits a network slice instance reconfiguration request; wherein the network slice instance reconfiguration request includes information of a network slice instance corresponding to the terminal; P is a positive integer not greater than N The network slice instance reconfiguration request is used to reconfigure the network slice instance included by the quasi-target base station that receives the network slice instance reconfiguration request, so that the reconfigured network slice instance is compatible with the network slice corresponding to the terminal. If the information of the instance is received by the transceiver 302 and the at least one network slice instance reconfiguration successful response returned by the P target base stations is received, at least one The network slice instance reconfiguration success response determines the target base station among the corresponding quasi-target base stations.
一种实现方式可从接收到网络切片实例重配置成功响应的准目标基站中找出一个作为目标基站，或者为了提高可靠性，找出多个作为目标基站。可选地，处理器301，在若接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站时，用于：若通过收发器302接收到P中L个准目标基站中的每个准目标基站分别返回的网络切片实例重配置成功响应，则：将L个准目标基站中终端接入后服务性能最优的准目标基站确定为目标基站；L为不大于P的正整数。An implementation may find one of the quasi-target base stations that received the network slice instance reconfiguration success response as the target base station, or find a plurality of target base stations for improving reliability. Optionally, the processor 301, after receiving the at least one network slice instance reconfiguration success response returned by the P quasi-target base stations, determining the target base station from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response. When the network slice instance reconfiguration success response returned by each of the L target target base stations in the P is received by the transceiver 302, the terminal is connected to the L target base stations. The quasi-target base station with the best service performance is determined as the target base station; L is a positive integer not greater than P.
为了保证时延最短，另一种可选地方案为，若通过收发器302接收到P个准目标基站中的一个基站返回的网络切片实例重配置成功响应，则将该最早接收到的网络切片实例重配置成功响应对应的准目标基站确定为目标基站，并向P个准目标基站中剩余的P-1个准目标基站发送重配置取消命令；其中，重配置取消命令用于使剩余的P-1个准目标基站取消对网络切片实例的重配置操作。In order to ensure the shortest delay, another alternative is to slice the earliest received network if the network slice instance reconfiguration successful response returned by one of the P target base stations is received by the transceiver 302. The quasi-target base station corresponding to the instance reconfiguration success response is determined as the target base station, and sends a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P - 1 quasi-target base station cancels the reconfiguration operation of the network slice instance.
若M个邻基站中存在N个准目标基站；N个准目标基站中的每个准目标基站可以满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数；处理器301，在根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站时， 用于：若存在将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站，则：将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站确定为目标基站；其中，K为不大于N的正整数。If there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations can satisfy the condition that: the terminal access quasi-target base station has better service performance than the access current current base station; N is a positive integer not greater than M; the processor 301 determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations When the target base station to be switched by the terminal is used, if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, the network slice instance information and the network slice corresponding to the terminal are used. The K quasi-target base stations to which the information of the instance matches are determined as the target base station; wherein K is a positive integer not greater than N.
所述处理器301，还用于：在从所述M个邻基站中确定出所述终端需切换的目标基站之后，通过所述收发器向所述目标基站发送切换请求；其中，所述切换请求中包括所述终端对应的网络切片实例的信息；通过所述收发器302接收所述目标基站返回的切换响应；其中，切换响应中包括终端的待接入的网络切片实例的信息；其中，待接入的网络切片实例的信息所指示的网络切片实例：兼容终端对应的网络切片实例的信息所指示的网络切片实例所承载的业务。从而实现了终端切换至目标基站的过程，且使终端接入目标基站中能够兼容终端对应的网络切片实例的信息的网络切片实例中，保证终端业务的不中断。The processor 301 is further configured to: after determining, by the M neighboring base stations, the target base station to be handed over by the terminal, send, by using the transceiver, a handover request to the target base station; where The request includes the information of the network slice instance corresponding to the terminal, and the switch 302 receives the handover response returned by the target base station, where the handover response includes information about the network slice instance to be accessed by the terminal, where The network slice instance indicated by the information of the network slice instance to be accessed: the service carried by the network slice instance indicated by the information of the network slice instance corresponding to the terminal. Therefore, the process of the terminal switching to the target base station is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
图4示例性示出了本申请实施例提供的一种选择目标基站的装置的结构示意图。FIG. 4 is a schematic structural diagram of an apparatus for selecting a target base station according to an embodiment of the present application.
基于相同构思，本申请实施例提供一种选择目标基站的装置，用于执行上述方法流程。选择目标基站的装置400可以用于执行上述方法中的任一个方案。如图4所示，选择目标基站的装置400包括接收单元401、处理单元402和发送单元403。Based on the same concept, the embodiment of the present application provides an apparatus for selecting a target base station, which is used to execute the foregoing method flow. The apparatus 400 for selecting a target base station can be used to perform any of the above methods. As shown in FIG. 4, the apparatus 400 for selecting a target base station includes a receiving unit 401, a processing unit 402, and a transmitting unit 403.
处理单元402，用于若确定终端需进行基站切换，则：根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M为正整数；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。The processing unit 402 is configured to: if it is determined that the terminal needs to perform the base station handover, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighbors The base station determines the target base station to which the terminal needs to be handed over; where M is a positive integer; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication information indicating the service type and the service quality level of the network slice instance indicated by the information of the network slice instance.
本申请实施例中，源基站若确定终端需进行基站切换，则根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站；其中，M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。由于源基站是根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息选择的目标基站，因此选择目标基站时既考虑到了邻基站的信号质量，也考虑到了邻基站上的网络切片实例的信息，从而可使选择出的目标基站更好的适应网络切片实例应用场景。进而，可避免选择出的目标基站与终端的网络切片实例的信息不匹配的问题。In the embodiment of the present application, if the source base station determines that the terminal needs to perform the base station handover, the information is based on the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. Determining, by the neighboring base station, the target base station to be handed over by the terminal; the information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: The indication of the service type and service quality level of the network slice instance indicated by the information of the instance. Since the source base station is a target base station selected according to the signal quality of the M neighboring base stations, the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, the target base station is selected to take into account the signal of the neighbor base station. The quality of the network slice instance on the neighboring base station is also considered, so that the selected target base station can be better adapted to the network slice instance application scenario. Furthermore, the problem that the selected target base station does not match the information of the network slice instance of the terminal can be avoided.
本申请实施例中网络切片实例和网络切片的定义参见上述内容，在此不再赘述。网络切片和网络切片实例的关系可为1：R，R为正整数；即同一类型的网络切片下面有R种不同的网络切片实例。For the definitions of the network slice instance and the network slice in the embodiment of the present application, refer to the foregoing content, and details are not described herein again. The relationship between the network slice and the network slice instance may be 1:R, and R is a positive integer; that is, there are R different network slice instances under the same type of network slice.
也就是说，网络切片实例是一系列物理和逻辑资源的集合。本申请实施例中的源基站、目标基站或邻基站中任一个基站的网络切片实例的信息具体是指该基站上所包括的网络切片实例中网络切片实例的信息。本申请实施例中，网络切片实例上面跑的是业务，而终端对应的网络切片实例的信息指的是该终端所使用的业务对应的网络切片实例的信息。That is, a network slice instance is a collection of physical and logical resources. The information of the network slice instance of the source base station, the target base station, or the neighboring base station in the embodiment of the present application refers specifically to the information of the network slice instance in the network slice instance included in the base station. In the embodiment of the present application, the network slice instance runs on the service, and the information of the network slice instance corresponding to the terminal refers to the information of the network slice instance corresponding to the service used by the terminal.
可选地，在根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站之前，接收单元401，还用于：通过有线或无线的形式接收M个邻基站的网络切片实例的信息；发送单元403，还用于：通过有线或无线的形式广播源基站的网络切片实例的信息。可选地，网络切片实例的信息包括：网络切片类型(Network slice type)、网络切片实例的标识(Slice  Instance Identity，Slice ID)、业务质量等级的标识(Quality of Service Class Identifier，QCI)、业务类型(Service Type)和网络切片实例的参数(slice parameters)中的任一个或任多个。一种可选地的方案中，若基站间已经采用Xn口有线连接，则基站会优先选择Xn口广播自己的网络切片实例的信息，如此可省时省力；若保留基站间Xn接口未开通，则基站可走空口广播自己的网络切片实例的信息。如此可使基站获取邻基站的网络切片实例的信息。Optionally, before determining the target base station to be handed over by the M neighboring base stations according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal. The receiving unit 401 is further configured to: receive the information of the network slice instance of the M neighboring base stations by using a wired or wireless form; and the sending unit 403 is further configured to: broadcast the information of the network slice instance of the source base station by using a wired or wireless form . Optionally, the information of the network slice instance includes: a network slice type, a slice Instance Identity (Slice ID), a quality of service class identifier (QCI), and a service. Any one or more of a Service Type and a slice parameter of a network slice instance. In an optional solution, if the Xn interface is connected between the base stations, the base station preferentially selects the information of the Xn interface to broadcast its own network slice instance, which saves time and effort; if the Xn interface between the base stations is not opened, Then, the base station can broadcast the information of its own network slice instance in the air interface. In this way, the base station can acquire information of the network slice instance of the neighbor base station.
可选地，本申请实施例中M个邻基站的网络切片实例的信息和终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。比如每个网络切片实例的信息可直接包括网络切片实例的业务类型和业务质量等级；也可包括网络切片实例的标识，进而可以根据网络切片实例的标识查出业务类型和业务质量等级。Optionally, the information about the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal in the embodiment of the present application include: indicating, by the information used to indicate the network slice instance. Indicates the service type and quality of service level of the network slice instance. For example, the information of each network slice instance may directly include the service type and the service quality level of the network slice instance. The identifier of the network slice instance may also be included, and the service type and the service quality level may be detected according to the identifier of the network slice instance.
一种可选地实施方式中M个邻基站中存在N个准目标基站；N个准目标基站中的每个准目标基站满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数；处理单元402，在根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站时，用于：若不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站，则针对N个准目标基站中的每个准目标基站，从准目标基站包括的网络切片实例的信息中确定出：与终端对应的网络切片实例的信息的相似度最高的网络切片实例的信息，以及相似度最高的网络切片实例的信息与终端对应的网络切片实例的信息的相似度；根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站；其中，准目标基站的网络切片实例的信息与终端对应的网络切片实例的信息的相似度是根据该两个网络切片实例的信息中包括的网络切片实例的参数的参数类型和参数值确定的。如此，当不存在网络切片实例的信息与终端对应的网络切片实例的信息匹配的准目标基站时，可以选择相似度最高的网络切片实例进行重配置，如此，网络切片实例的重配置过程进行变动的参数项尽可能的少，且参数的值的变动范围也尽可能的小，进一步可加快重配置速率。In an optional implementation manner, there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies the condition: the terminal accesses the quasi-target base station and the access to the current serving base station The performance is better; N is a positive integer not greater than M; the processing unit 402, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M When the target base station to be handed over by the terminal is determined by the neighboring base stations, if there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then for each of the N quasi-target base stations The quasi-target base station determines, from the information of the network slice instance included in the quasi-target base station, the information of the network slice instance with the highest similarity of the information of the network slice instance corresponding to the terminal, and the information of the network slice instance with the highest similarity The similarity of the information of the network slice instance corresponding to the terminal; determining from the N quasi-target base stations according to the similarity degree of each quasi-target base station The target base station to which the terminal needs to be handed over; wherein the similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is based on the parameters of the network slice instance included in the information of the two network slice instances The parameter type and parameter value are determined. In this manner, when there is no quasi-target base station that matches the information of the network slice instance and the information of the network slice instance corresponding to the terminal, the network slice instance with the highest similarity can be selected for reconfiguration. Thus, the reconfiguration process of the network slice instance changes. The parameter items are as small as possible, and the range of values of the parameters is also as small as possible, which further speeds up the reconfiguration rate.
为了提高重配置效率，一种可选地实施方式中处理单元402，在根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站时，用于：将N个准目标基站中：相似度最高的准目标基站确定为目标基站；发送单元403，在处理单元402根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站之后，还用于：向N个准目标基站中相似度最高的准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；若确定网络切片实例重配置失败，则向N个准目标基站中除已发送过网络切片实例重配置请求的准目标基站之外的准目标基站中：相似度最高的准目标基站发送网络切片实例重配置请求，直至接收到网络切片实例重配置成功响应；处理单元402，还用于：将通过接收单元401接收到的网络切片实例重配置成功响应对应的准目标基站重新确定为目标基站；其中，网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息。In order to improve the reconfiguration efficiency, the processing unit 402 is configured to: when determining the target base station to be handed over by the N quasi-target base stations according to the similarity corresponding to each quasi-target base station, for: Determining, among the N quasi-target base stations, the quasi-target base station with the highest similarity as the target base station; and sending unit 403, determining, by the processing unit 402, the terminal needs from the N quasi-target base stations according to the similarity corresponding to each quasi-target base station After the target base station is switched, the network slice instance reconfiguration request is sent to the quasi-target base station with the highest similarity among the N quasi-target base stations, where the network slice instance reconfiguration request includes the information of the network slice instance corresponding to the terminal. If it is determined that the network slice instance reconfiguration fails, to the quasi-target base stations other than the quasi-target base station that has sent the network slice instance reconfiguration request to the N quasi-target base stations: the quasi-target base station with the highest similarity transmits the network slice The instance reconfiguration request is received until the network slice instance reconfiguration success response is received; the processing unit 402 is further configured to: pass The quasi-target base station corresponding to the network slice instance reconfiguration success response received by the receiving unit 401 is re-determined as the target base station; wherein the network slice instance reconfiguration request is used to enable the quasi-target base station receiving the network slice instance reconfiguration request to The included network slice instance performs a reconfiguration operation, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal.
可选地，为了提高重配置成功的几率，以及提高终端切换的可靠性，可以进行多重准备，可选地，发送单元403，用于：向N个准目标基站中：相似度从高到低的顺序排序在 前P位的P个准目标基站中的每个准目标基站发送网络切片实例重配置请求；其中，网络切片实例重配置请求中包括终端对应的网络切片实例的信息；P为不大于N的正整数；网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容终端对应的网络切片实例的信息；处理单元402，在根据每个准目标基站对应的相似度，从N个准目标基站中确定出终端需切换的目标基站时，用于：若通过接收单元401接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站。Optionally, in order to improve the probability of successful reconfiguration and improve the reliability of the handover of the terminal, multiple preparations may be performed. Optionally, the sending unit 403 is configured to: to the N quasi-target base stations: the similarity is high to low. The sequence ordering of each of the P target base stations of the first P bit sends a network slice instance reconfiguration request; wherein the network slice instance reconfiguration request includes information of the network slice instance corresponding to the terminal; P is not a positive integer greater than N; the network slice instance reconfiguration request is used to reconfigure the network slice instance included by the quasi-target base station receiving the network slice instance reconfiguration request to make the reconfigured network slice instance compatible The information of the network splicing instance corresponding to the terminal; the processing unit 402, when determining the target base station to be switched by the terminal from the N quasi-target base stations according to the similarity corresponding to each of the quasi-target base stations, if: Receiving at least one network slice instance reconfiguration successful response returned by the P quasi-target base stations, and realizing from at least one network slice Reconfiguration success response corresponding to the registration target base station determines a target base station.
相应地，可从接收到网络切片实例重配置成功响应的准目标基站中找出一个作为目标基站，或者为了提高可靠性，找出多个作为目标基站。可选地，处理单元402，在若接收到P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从至少一个网络切片实例重配置成功响应对应的准目标基站中确定出目标基站时，用于：若通过接收单元401接收到P中L个准目标基站中的每个准目标基站分别返回的网络切片实例重配置成功响应，则：将L个准目标基站中终端接入后服务性能最优的准目标基站确定为目标基站；L为不大于P的正整数。Accordingly, one of the quasi-target base stations receiving the network slice instance reconfiguration success response can be found as the target base station, or in order to improve the reliability, a plurality of target base stations can be found. Optionally, the processing unit 402 determines, after receiving the at least one network slice instance reconfiguration success response returned by the P quasi-target base stations, determining the target base station from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response. When the receiving, by the receiving unit 401, the network slice instance reconfiguration success response returned by each of the L target base stations in the P is received, the terminal is connected to the L target base stations. The quasi-target base station with the best service performance is determined as the target base station; L is a positive integer not greater than P.
为了保证时延最短，另一种可选地方案为，若通过接收单元401接收到P个准目标基站中的一个基站返回的网络切片实例重配置成功响应，则将该最早接收到的网络切片实例重配置成功响应对应的准目标基站确定为目标基站，并向P个准目标基站中剩余的P-1个准目标基站发送重配置取消命令；其中，重配置取消命令用于使剩余的P-1个准目标基站取消对网络切片实例的重配置操作。In order to ensure that the delay is the shortest, another optional solution is: if the network slice instance reconfiguration success response returned by one of the P target base stations is received by the receiving unit 401, the earliest received network slice is received. The quasi-target base station corresponding to the instance reconfiguration success response is determined as the target base station, and sends a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to make the remaining P - 1 quasi-target base station cancels the reconfiguration operation of the network slice instance.
若M个邻基站中存在N个准目标基站，其中N个准目标基站中的每个准目标基站可以满足条件：终端接入准目标基站比接入当前服务基站得到的服务性能更优；N为不大于M的正整数；处理单元402，在根据M个邻基站的信号质量、M个邻基站的网络切片实例的信息，以及终端对应的网络切片实例的信息，从M个邻基站中确定出终端需切换的目标基站时，用于：若存在将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站，则：将网络切片实例的信息与终端对应的网络切片实例的信息匹配的K个准目标基站确定为目标基站；其中，K为不大于N的正整数。If there are N quasi-target base stations in the M neighboring base stations, each of the N quasi-target base stations can satisfy the condition that the terminal access quasi-target base station has better service performance than accessing the current serving base station; a positive integer that is not greater than M. The processing unit 402 determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations. When the target base station to be switched by the terminal is used, if there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, the information of the network slice instance and the network corresponding to the terminal are used. The K quasi-target base stations to which the information of the slice instance matches are determined as the target base station; wherein K is a positive integer not greater than N.
在从M个邻基站中确定出终端需切换的目标基站之后，发送单元403还可以向目标基站发送切换请求；其中，切换请求中包括终端对应的网络切片实例的信息；接收单元401，还用于：接收目标基站返回的切换响应；其中，切换响应中包括终端的待接入的网络切片实例的信息；其中，待接入的网络切片实例的信息所指示的网络切片实例：兼容终端对应的网络切片实例的信息所指示的网络切片实例所承载的业务。从而实现了终端切换至目标基站的过程，且使终端接入目标基站中能够兼容终端对应的网络切片实例的信息的网络切片实例中，保证终端业务的不中断。After determining, by the M neighboring base stations, the target base station to be handed over by the terminal, the sending unit 403 may further send a handover request to the target base station, where the handover request includes information of the network slice instance corresponding to the terminal, and the receiving unit 401 further uses And receiving the handover response returned by the target base station, where the handover response includes information about the network slice instance to be accessed by the terminal, where the network slice instance indicated by the information of the network slice instance to be accessed is: The traffic carried by the network slice instance indicated by the information of the network slice instance. Therefore, the process of the terminal switching to the target base station is implemented, and the terminal accesses the network slice instance of the network base station instance that can be compatible with the network slice instance corresponding to the terminal in the target base station, and ensures that the terminal service is not interrupted.
应理解，以上各个单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。本申请实施例中，接收单元401和发送单元403可以由收发器302实现，处理单元402可以由处理器301实现。如图3所示，选择目标基站的装置300可以包括处理器301、收发器302和存储器303。其中，存储器303可以用于存储处理器301执行方案时的代码，该代码可为选择目标基站的装置300出厂时预装的程序/代码。It should be understood that the division of each unit above is only a division of a logical function, and the actual implementation may be integrated into one physical entity in whole or in part, or may be physically separated. In the embodiment of the present application, the receiving unit 401 and the sending unit 403 may be implemented by the transceiver 302, and the processing unit 402 may be implemented by the processor 301. As shown in FIG. 3, the apparatus 300 for selecting a target base station may include a processor 301, a transceiver 302, and a memory 303. The memory 303 can be used to store the code when the processor 301 executes the solution, and the code can be a program/code pre-installed when the device 300 of the target base station is selected.
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现、当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本发明实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机指令可以存储在计算机存储介质中，或者从一个计算机存储介质向另一个计算机存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质，(例如，软盘、硬盘、磁带、磁光盘(MO)等)、光介质(例如，CD、DVD、BD、HVD等)、或者半导体介质(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(Solid State Disk，SSD))等。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof, and when implemented using a software program, may be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer storage medium or transferred from one computer storage medium to another computer storage medium, for example, computer instructions can be wired from a website site, computer, server or data center (eg, coaxial cable, optical fiber, Digital Subscriber Line (DSL) or wireless (eg, infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center. The computer storage medium can be any available media that can be accessed by the computer or a data storage device such as a server, data center, or the like, including one or more available media. Usable media can be magnetic media (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical media (eg, CD, DVD, BD, HVD, etc.), or semiconductor media (eg, ROM, EPROM, EEPROM, Non-volatile memory (NAND FLASH), solid state disk (SSD), etc.
本领域内的技术人员应明白，本申请实施例可提供为方法、***、或计算机程序产品。因此，本申请实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Therefore, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, embodiments of the present application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
本申请实施例是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine such that instructions executed by a processor of a computer or other programmable data processing device are utilized for Means for implementing the functions specified in one or more flows of the flowchart or in a block or blocks of the flowchart.
这些计算机指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The computer instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device, the instruction device A function that is specified in one or more blocks of a flow or a flow and/or a block diagram of a flowchart.
这些计算机指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The steps are provided to implement the functions specified in one or more blocks of the flowchart or in a block or blocks of the flowchart.
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims (17)

  1. 一种选择目标基站的方法，其特征在于，包括：A method for selecting a target base station, comprising:
    源基站确定所述终端需进行基站切换；The source base station determines that the terminal needs to perform base station handover;
    所述源基站根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站；其中，所述M为正整数；The source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations. The target base station to be switched by the terminal; wherein the M is a positive integer;
    其中，所述M个邻基站的网络切片实例的信息和所述终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。The information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: a network slice indicated by the information used to indicate the network slice instance. Indicates the service type and service quality level of the instance.
  2. 如权利要求1所述的方法，其特征在于，所述源基站根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站之前，还包括：The method according to claim 1, wherein the source base station according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the network slice instance corresponding to the terminal The information, before determining the target base station to be handed over by the terminal from the M neighboring base stations, further includes:
    所述源基站通过有线或无线的形式接收所述M个邻基站的网络切片实例的信息；并通过有线或无线的形式广播所述源基站的网络切片实例的信息。And the source base station receives information of the network slice instance of the M neighboring base stations by using a wired or wireless manner; and broadcasts information of the network slice instance of the source base station by using a wired or wireless manner.
  3. 如权利要求1或2所述的方法，其特征在于，所述M个邻基站中存在N个准目标基站；所述N个准目标基站中的每个准目标基站满足条件：所述终端接入所述准目标基站比接入当前服务基站得到的服务性能更优；所述N为不大于M的正整数；The method according to claim 1 or 2, wherein there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies a condition: the terminal is connected Entering the quasi-target base station is better than the service performance obtained by accessing the current serving base station; the N is a positive integer not greater than M;
    所述源基站根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站，包括：The source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations. The target base station to be switched by the terminal, including:
    若不存在网络切片实例的信息与所述终端对应的网络切片实例的信息匹配的准目标基站，则：If there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then:
    针对所述N个准目标基站中的每个准目标基站，从所述准目标基站包括的网络切片实例的信息中确定出：与所述终端对应的网络切片实例的信息的相似度最高的网络切片实例的信息，以及所述相似度最高的网络切片实例的信息与所述终端对应的网络切片实例的信息的相似度；Determining, from the information of the network slice instance included in the quasi-target base station, the network with the highest similarity of the information of the network slice instance corresponding to the terminal, for each of the N quasi-target base stations The information of the slice instance, and the similarity between the information of the network slice instance with the highest similarity and the information of the network slice instance corresponding to the terminal;
    根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站；Determining, from the N quasi-target base stations, a target base station to be handed over by the terminal according to the similarity corresponding to each quasi-target base station;
    其中，准目标基站的网络切片实例的信息与所述终端对应的网络切片实例的信息的相似度，是根据该两个网络切片实例的信息中包括的网络切片实例的参数的参数类型和参数值确定的。The similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is a parameter type and a parameter value of a parameter of the network slice instance included in the information of the two network slice instances. definite.
  4. 如权利要求3所述的方法，其特征在于，所述根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站，包括：The method according to claim 3, wherein the determining, according to the similarity corresponding to each of the quasi-target base stations, the target base station to be handed over by the terminal from the N quasi-target base stations, comprising:
    将所述N个准目标基站中所述相似度最高的准目标基站确定为所述目标基站；Determining, in the N quasi-target base stations, the quasi-target base station with the highest similarity as the target base station;
    所述根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站之后，还包括：And after determining, according to the similarity corresponding to each of the quasi-target base stations, the target base station to be handed over by the terminal from the N quasi-target base stations, the method further includes:
    向所述N个准目标基站中所述相似度最高的准目标基站发送网络切片实例重配置请求；其中，所述网络切片实例重配置请求中包括所述终端对应的网络切片实例的信息；Transmitting, to the quasi-target base station with the highest similarity among the N quasi-target base stations, a network slice instance reconfiguration request, where the network slice instance reconfiguration request includes information of a network slice instance corresponding to the terminal;
    若确定网络切片实例重配置失败，则向所述N个准目标基站中除已发送过所述网络切 片实例重配置请求的准目标基站之外的准目标基站中：所述相似度最高的准目标基站发送所述网络切片实例重配置请求，直至接收到网络切片实例重配置成功响应；If it is determined that the network slice instance reconfiguration fails, the quasi-target base station other than the quasi-target base station that has sent the network slice instance reconfiguration request to the N quasi-target base stations: the highest similarity criterion The target base station sends the network slice instance reconfiguration request until receiving a network slice instance reconfiguration success response;
    将接收到的所述网络切片实例重配置成功响应对应的准目标基站重新确定为所述目标基站；Re-determining the received quasi-target base station corresponding to the network slice instance reconfiguration success response as the target base station;
    其中，所述网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容所述终端对应的网络切片实例的信息。The network slice instance reconfiguration request is used to reconfigure the network slice instance included in the re-configured network slice instance by the quasi-target base station that receives the network slice instance reconfiguration request, so that the reconfigured network slice instance is compatible with the Information about the network slice instance corresponding to the terminal.
  5. 如权利要求3所述的方法，其特征在于，所述根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站，包括：The method according to claim 3, wherein the determining, according to the similarity corresponding to each of the quasi-target base stations, the target base station to be handed over by the terminal from the N quasi-target base stations, comprising:
    向所述N个准目标基站中：所述相似度从高到低的顺序排序在前P位的P个准目标基站中的每个准目标基站发送网络切片实例重配置请求；其中，所述网络切片实例重配置请求中包括所述终端对应的网络切片实例的信息；所述P为不大于N的正整数；所述网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容所述终端对应的网络切片实例的信息；Transmitting, to the N quasi-target base stations, the order of similarity from high to low, sending a network slice instance reconfiguration request to each of the P target base stations of the first P bits; wherein The network slice instance reconfiguration request includes information about a network slice instance corresponding to the terminal; the P is a positive integer not greater than N; and the network slice instance reconfiguration request is used to enable the network slice instance reconfiguration request to be received The quasi-target base station performs a reconfiguration operation on the network slice instance that is included in the network, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal;
    若接收到所述P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从所述至少一个网络切片实例重配置成功响应对应的准目标基站中确定出所述目标基站。If the at least one network slice instance reconfiguration success response returned by the P target base stations is received, determining the target base station from the quasi-target base station corresponding to the at least one network slice instance reconfiguration success response.
  6. 如权利要求5所述的方法，其特征在于，若接收到所述P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从所述至少一个网络切片实例重配置成功响应对应的准目标基站中确定出所述目标基站，包括：The method according to claim 5, wherein, if at least one network slice instance reconfiguration success response returned by the P target base stations is received, reconfiguring a success response from the at least one network slice instance Determining the target base station in the quasi-target base station, including:
    若接收到所述P中L个准目标基站中的每个准目标基站分别返回的网络切片实例重配置成功响应，则：将所述L个准目标基站中终端接入后服务性能最优的准目标基站确定为所述目标基站；所述L为不大于P的正整数；If the network slice instance reconfiguration success response returned by each of the L quasi-target base stations in the P is received, the service performance of the terminal in the L quasi-target base stations is optimized. The quasi-target base station is determined as the target base station; the L is a positive integer not greater than P;
    或者；or;
    若接收到所述P个准目标基站中的一个基站返回的网络切片实例重配置成功响应，则将该最早接收到的网络切片实例重配置成功响应对应的准目标基站确定为所述目标基站，并向所述P个准目标基站中剩余的P-1个准目标基站发送重配置取消命令；其中，所述重配置取消命令用于使所述剩余的P-1个准目标基站取消对网络切片实例的重配置操作。If the network slice instance reconfiguration success response returned by one of the P target base stations is received, the quasi-target base station corresponding to the earliest received network slice instance reconfiguration success response is determined as the target base station, And sending a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P quasi-target base stations; wherein the reconfiguration cancel command is used to cancel the remaining P-1 quasi-target base stations to cancel the network The reconfiguration operation of the slice instance.
  7. 如权利要求1或2所述的方法，其特征在于，所述M个邻基站中存在N个准目标基站；所述N个准目标基站中的每个准目标基站满足条件：所述终端接入所述准目标基站比接入当前服务基站得到的服务性能更优；所述N为不大于M的正整数；The method according to claim 1 or 2, wherein there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies a condition: the terminal is connected Entering the quasi-target base station is better than the service performance obtained by accessing the current serving base station; the N is a positive integer not greater than M;
    所述源基站根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站，包括：The source base station determines, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations. The target base station to be switched by the terminal, including:
    若存在将网络切片实例的信息与所述终端对应的网络切片实例的信息匹配的K个准目标基站，则：If there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, then:
    将网络切片实例的信息与所述终端对应的网络切片实例的信息匹配的K个准目标基站确定为所述目标基站；Determining, by the K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, as the target base station;
    其中，所述K为不大于N的正整数。Wherein, the K is a positive integer not greater than N.
  8. 如权利要求1至7任一权利要求所述的方法，其特征在于，从所述M个邻基站中 确定出所述终端需切换的目标基站之后，还包括：The method according to any one of claims 1 to 7, wherein after determining the target base station to be handed over by the terminal from the M neighboring base stations, the method further includes:
    所述源基站向所述目标基站发送切换请求；其中，所述切换请求中包括所述终端对应的网络切片实例的信息；The source base station sends a handover request to the target base station, where the handover request includes information about a network slice instance corresponding to the terminal;
    所述源基站接收所述目标基站返回的切换响应；其中，所述切换响应中包括所述终端的待接入的网络切片实例的信息；Receiving, by the source base station, a handover response returned by the target base station, where the handover response includes information about a network slice instance of the terminal to be accessed;
    其中，所述待接入的网络切片实例的信息所指示的网络切片实例：兼容所述终端对应的网络切片实例的信息所指示的网络切片实例所承载的业务。The network slice instance indicated by the information of the network slice instance to be accessed is compatible with the service carried by the network slice instance indicated by the information of the network slice instance corresponding to the terminal.
  9. 一种选择目标基站的装置，其特征在于，所述选择目标基站的装置包括处理器、收发器和存储器；An apparatus for selecting a target base station, wherein the apparatus for selecting a target base station comprises a processor, a transceiver, and a memory;
    所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，并控制所述收发器进行信号接收和信号发送，当所述处理器执行所述存储器存储的指令时，执行：The memory is configured to store an instruction, the processor is configured to execute the instruction stored by the memory, and control the transceiver to perform signal reception and signal transmission, and when the processor executes the instruction stored in the memory, execute:
    若确定所述终端需进行基站切换，则：If it is determined that the terminal needs to perform base station handover, then:
    根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站；其中，所述M为正整数；Determining, by the M neighboring base stations, the terminal needs according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal a target base station for handover; wherein the M is a positive integer;
    其中，所述M个邻基站的网络切片实例的信息和所述终端对应的网络切片实例的信息中的每个网络切片实例的信息包括：用于指示该网络切片实例的信息所指示的网络切片实例的业务类型和业务质量等级的指示信息。The information of the network slice instance of the M neighboring base stations and the information of each network slice instance in the information of the network slice instance corresponding to the terminal include: a network slice indicated by the information used to indicate the network slice instance. Indicates the service type and service quality level of the instance.
  10. 如权利要求9所述的装置，其特征在于，所述收发器，在根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站之前，还用于：The apparatus according to claim 9, wherein the transceiver is configured to: according to signal quality of the M neighboring base stations, information of network slice instances of the M neighboring base stations, and a network corresponding to the terminal The information of the slice instance is used to determine the target base station to be handed over by the M neighboring base stations before:
    通过有线或无线的形式接收所述M个邻基站的网络切片实例的信息；并通过有线或无线的形式广播所述源基站的网络切片实例的信息。Receiving information of a network slice instance of the M neighbor base stations by wire or wireless; and broadcasting information of a network slice instance of the source base station by wire or wireless.
  11. 如权利要求9或10所述的装置，其特征在于，所述M个邻基站中存在N个准目标基站；所述N个准目标基站中的每个准目标基站满足条件：所述终端接入所述准目标基站比接入当前服务基站得到的服务性能更优；所述N为不大于M的正整数；The apparatus according to claim 9 or 10, wherein there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies a condition: the terminal is connected Entering the quasi-target base station is better than the service performance obtained by accessing the current serving base station; the N is a positive integer not greater than M;
    所述处理器，在根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站时，具体用于：The processor, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations When the target base station to be switched by the terminal is determined, it is specifically used to:
    若不存在网络切片实例的信息与所述终端对应的网络切片实例的信息匹配的准目标基站，则：If there is no quasi-target base station whose information of the network slice instance matches the information of the network slice instance corresponding to the terminal, then:
    针对所述N个准目标基站中的每个准目标基站，从所述准目标基站包括的网络切片实例的信息中确定出：与所述终端对应的网络切片实例的信息的相似度最高的网络切片实例的信息，以及所述相似度最高的网络切片实例的信息与所述终端对应的网络切片实例的信息的相似度；Determining, from the information of the network slice instance included in the quasi-target base station, the network with the highest similarity of the information of the network slice instance corresponding to the terminal, for each of the N quasi-target base stations The information of the slice instance, and the similarity between the information of the network slice instance with the highest similarity and the information of the network slice instance corresponding to the terminal;
    根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站；Determining, from the N quasi-target base stations, a target base station to be handed over by the terminal according to the similarity corresponding to each quasi-target base station;
    其中，准目标基站的网络切片实例的信息与所述终端对应的网络切片实例的信息的相似度是根据该两个网络切片实例的信息中包括的网络切片实例的参数的参数类型和参数值确定的。The similarity between the information of the network slice instance of the quasi-target base station and the information of the network slice instance corresponding to the terminal is determined according to the parameter type and parameter value of the parameter of the network slice instance included in the information of the two network slice instances. of.
  12. 如权利要求11所述的装置，其特征在于，所述处理器，在根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站时，具体用于：The apparatus according to claim 11, wherein the processor determines, from the N quasi-target base stations, a target to be switched by the terminal according to the similarity corresponding to each quasi-target base station. When the base station is used, it is specifically used to:
    将所述N个准目标基站中：所述相似度最高的准目标基站确定为所述目标基站；Determining, in the N quasi-target base stations, the quasi-target base station with the highest similarity as the target base station;
    所述收发器，在所述处理器根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站之后，还用于：The transceiver is further configured to: after determining, by the processor, the target base station to be switched by the terminal from the N quasi-target base stations according to the similarity corresponding to each of the quasi-target base stations;
    向所述N个准目标基站中所述相似度最高的准目标基站发送网络切片实例重配置请求；其中，所述网络切片实例重配置请求中包括所述终端对应的网络切片实例的信息；Transmitting, to the quasi-target base station with the highest similarity among the N quasi-target base stations, a network slice instance reconfiguration request, where the network slice instance reconfiguration request includes information of a network slice instance corresponding to the terminal;
    若确定网络切片实例重配置失败，则向所述N个准目标基站中除已发送过所述网络切片实例重配置请求的准目标基站之外的准目标基站中：所述相似度最高的准目标基站发送所述网络切片实例重配置请求，直至接收到网络切片实例重配置成功响应；If it is determined that the network slice instance reconfiguration fails, the quasi-target base station other than the quasi-target base station that has sent the network slice instance reconfiguration request to the N quasi-target base stations: the highest similarity criterion The target base station sends the network slice instance reconfiguration request until receiving a network slice instance reconfiguration success response;
    所述处理器，还用于：The processor is further configured to:
    将通过所述收发器接收到的所述网络切片实例重配置成功响应对应的准目标基站重新确定为所述目标基站；Re-determining the quasi-target base station corresponding to the network slice instance reconfiguration success response received by the transceiver as the target base station;
    其中，所述网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容所述终端对应的网络切片实例的信息。The network slice instance reconfiguration request is used to reconfigure the network slice instance included in the re-configured network slice instance by the quasi-target base station that receives the network slice instance reconfiguration request, so that the reconfigured network slice instance is compatible with the Information about the network slice instance corresponding to the terminal.
  13. 如权利要求11所述的装置，其特征在于，所述处理器，在根据每个准目标基站对应的所述相似度，从所述N个准目标基站中确定出所述终端需切换的目标基站时，具体用于：The apparatus according to claim 11, wherein the processor determines, from the N quasi-target base stations, a target to be switched by the terminal according to the similarity corresponding to each quasi-target base station. When the base station is used, it is specifically used to:
    通过所述收发器向所述N个准目标基站中：所述相似度从高到低的顺序排序在前P位的P个准目标基站中的每个准目标基站发送网络切片实例重配置请求；其中，所述网络切片实例重配置请求中包括所述终端对应的网络切片实例的信息；所述P为不大于N的正整数；所述网络切片实例重配置请求用于使接收到该网络切片实例重配置请求的准目标基站对自身包括的网络切片实例进行重配置操作，以使重配置后的网络切片实例兼容所述终端对应的网络切片实例的信息；Transmitting, by the transceiver, to the N quasi-target base stations: the similarity is ranked from high to low, and each of the P target base stations of the previous P bits sends a network slice instance reconfiguration request. Wherein the network slice instance reconfiguration request includes information of a network slice instance corresponding to the terminal; the P is a positive integer not greater than N; and the network slice instance reconfiguration request is used to enable the network to be received The quasi-targeting base station of the slice instance reconfiguration request reconfigures the network slice instance that is included in the reconfiguration, so that the reconfigured network slice instance is compatible with the information of the network slice instance corresponding to the terminal;
    若通过所述收发器接收到所述P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从所述至少一个网络切片实例重配置成功响应对应的准目标基站中确定出所述目标基站。And determining, by the transceiver, at least one network slice instance reconfiguration success response returned by the P target base stations, determining, by the at least one network slice instance reconfiguration success response corresponding to the target base station Target base station.
  14. 如权利要求13所述的装置，其特征在于，所述处理器，在若接收到所述P个准目标基站返回的至少一个网络切片实例重配置成功响应，则从所述至少一个网络切片实例重配置成功响应对应的准目标基站中确定出所述目标基站时，具体用于：The apparatus according to claim 13, wherein the processor, when receiving at least one network slice instance reconfiguration success response returned by the P target base stations, from the at least one network slice instance When the target base station is determined in the quasi-target base station corresponding to the reconfiguration success response, it is specifically used to:
    若通过所述收发器接收到所述P中L个准目标基站中的每个准目标基站分别返回的网络切片实例重配置成功响应，则：将所述L个准目标基站中终端接入后服务性能最优的准目标基站确定为所述目标基站；所述L为不大于P的正整数；或者If the network slice instance reconfiguration success response returned by each of the L target target base stations in the P is received by the transceiver, the terminal is connected to the L target base stations. a quasi-target base station with optimal service performance is determined as the target base station; the L is a positive integer not greater than P; or
    若通过所述收发器接收到所述P个准目标基站中的一个基站返回的网络切片实例重配置成功响应，则将该最早接收到的网络切片实例重配置成功响应对应的准目标基站确定为所述目标基站，并向所述P个准目标基站中剩余的P-1个准目标基站发送重配置取消命令；其中，所述重配置取消命令用于使所述剩余的P-1个准目标基站取消对网络切片实例的重配置操作。If the network slice instance reconfiguration success response returned by one of the P target base stations is received by the transceiver, the quasi-target base station corresponding to the earliest received network slice instance reconfiguration success response is determined as Sending, by the target base station, a reconfiguration cancel command to the remaining P-1 quasi-target base stations of the P target base stations; wherein the reconfiguration cancel command is used to make the remaining P-1 quasi The target base station cancels the reconfiguration operation on the network slice instance.
  15. 如权利要求9或10所述的装置，其特征在于，所述M个邻基站中存在N个准目标基站；所述N个准目标基站中的每个准目标基站满足条件：所述终端接入所述准目标基站比接入当前服务基站得到的服务性能更优；所述N为不大于M的正整数；The apparatus according to claim 9 or 10, wherein there are N quasi-target base stations in the M neighboring base stations; each of the N quasi-target base stations satisfies a condition: the terminal is connected Entering the quasi-target base station is better than the service performance obtained by accessing the current serving base station; the N is a positive integer not greater than M;
    所述处理器，在根据所述M个邻基站的信号质量、所述M个邻基站的网络切片实例的信息，以及所述终端对应的网络切片实例的信息，从所述M个邻基站中确定出所述终端需切换的目标基站时，具体用于：The processor, according to the signal quality of the M neighboring base stations, the information of the network slice instance of the M neighboring base stations, and the information of the network slice instance corresponding to the terminal, from the M neighboring base stations When the target base station to be switched by the terminal is determined, it is specifically used to:
    若存在将网络切片实例的信息与所述终端对应的网络切片实例的信息匹配的K个准目标基站，则：If there are K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, then:
    将网络切片实例的信息与所述终端对应的网络切片实例的信息匹配的K个准目标基站确定为所述目标基站；Determining, by the K quasi-target base stations that match the information of the network slice instance with the information of the network slice instance corresponding to the terminal, as the target base station;
    其中，所述K为不大于N的正整数。Wherein, the K is a positive integer not greater than N.
  16. 如权利要求9至15任一权利要求所述的装置，其特征在于，所述处理器，还用于：The device according to any one of claims 9 to 15, wherein the processor is further configured to:
    在从所述M个邻基站中确定出所述终端需切换的目标基站之后，通过所述收发器向所述目标基站发送切换请求；其中，所述切换请求中包括所述终端对应的网络切片实例的信息；After determining, by the M neighboring base stations, the target base station to be handed over by the terminal, sending, by the transceiver, a handover request to the target base station; where the handover request includes a network slice corresponding to the terminal Instance information;
    通过所述收发器接收所述目标基站返回的切换响应；其中，所述切换响应中包括所述终端的待接入的网络切片实例的信息；Receiving, by the transceiver, a handover response returned by the target base station, where the handover response includes information of a network slice instance of the terminal to be accessed;
    其中，所述待接入的网络切片实例的信息所指示的网络切片实例：兼容所述终端对应的网络切片实例的信息所指示的网络切片实例所承载的业务。The network slice instance indicated by the information of the network slice instance to be accessed is compatible with the service carried by the network slice instance indicated by the information of the network slice instance corresponding to the terminal.
  17. 一种计算机存储介质，其特征在于，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令在被计算机调用时，使所述计算机执行如权利要求1至8任一权利要求所述的方法。A computer storage medium, characterized in that the computer storage medium stores computer executable instructions that, when invoked by a computer, cause the computer to perform any of claims 1 to 8 The method described.
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