WO2021022910A1 - 切换方法、用于切换的***和终端设备 - Google Patents
切换方法、用于切换的***和终端设备 Download PDFInfo
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- WO2021022910A1 WO2021022910A1 PCT/CN2020/096082 CN2020096082W WO2021022910A1 WO 2021022910 A1 WO2021022910 A1 WO 2021022910A1 CN 2020096082 W CN2020096082 W CN 2020096082W WO 2021022910 A1 WO2021022910 A1 WO 2021022910A1
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- base station
- source base
- indication information
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- target base
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- 238000000034 method Methods 0.000 title claims abstract description 86
- 238000004891 communication Methods 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 41
- 238000012545 processing Methods 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 21
- 238000005259 measurement Methods 0.000 description 14
- 238000012790 confirmation Methods 0.000 description 11
- 230000003993 interaction Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000003190 augmentative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
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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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
-
- 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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
-
- 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
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
-
- 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
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
Definitions
- the embodiments of the present application relate to the communication field, and in particular, to a handover method, a system for handover, and terminal equipment.
- the terminal device When the terminal device switches from the source cell to the target cell, a short signal interruption and time delay may be caused. In order to achieve non-disruption, the terminal device can connect to the source base station and the target base station at the same time during the handover process, and then disconnect the source base station after the terminal device successfully accesses the target cell.
- the embodiments of the present application provide a switching method, a system for switching, and terminal equipment, which avoid co-frequency interference, ensure uninterrupted signal transmission during co-frequency handover, and improve the communication quality of co-frequency handover.
- an embodiment of the present application provides a handover method, including: a source base station and a target base station obtain first indication information.
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- the source base station sends the first indication information to the terminal device.
- the source base station, the target base station, and the terminal device all obtain the first indication information.
- the terminal device transmits data with one of the source base station and the target base station at any time to avoid The same frequency interference brought by the simultaneous transmission of data is also ensured without interruption of signal transmission during the same frequency switching process, and the communication quality of the same frequency switching is improved.
- the source base station acquiring the first indication information includes: the source base station receives the first indication information sent by the target base station.
- the source base station receiving the first indication information sent by the target base station includes: the source base station receives a first message sent by the target base station, and the first message includes the first indication information .
- the method before the source base station receives the first message sent by the target base station, the method further includes: the source base station sends a second message to the target base station, and the second message includes the first indication information .
- the method before the source base station receives the first message sent by the target base station, the method further includes: the source base station sends a second message to the target base station, and the second message includes second indication information
- the second indication information is the time for the terminal equipment to transmit data with the source base station and the target base station respectively when the terminal equipment is handed over from the first cell of the source base station to the second cell of the target base station determined by the source base station.
- One instruction information is different.
- the target base station acquiring the first indication information includes: the target base station receives a second message sent by the source base station, and the second message includes the first indication information.
- an embodiment of the present application provides a handover method, including: a terminal device receives first indication information sent by a source base station.
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- the terminal device transmits data to the source base station and the target base station respectively according to the first indication information.
- an embodiment of the present application provides a source base station, including: an acquisition module, configured to acquire first indication information.
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- the sending module is used to send the first indication information to the terminal device.
- the acquiring module is specifically configured to: receive the first indication information sent by the target base station.
- the acquiring module is specifically configured to: receive a first message sent by the target base station, where the first message includes the first indication information.
- the sending module is further configured to send a second message to the target base station, where the second message includes the first indication information.
- the sending module is further configured to: the source base station sends a second message to the target base station, the second message includes second indication information, and the second indication information is determined by the source base station When the terminal device is handed over from the first cell of the source base station to the second cell of the target base station, when the terminal device transmits data with the source base station and the target base station respectively, the second indication information is different from the first indication information.
- an embodiment of the present application provides a target base station, including: an acquisition module, configured to acquire first indication information.
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- a sending module is further included, and the sending module is configured to send the first indication information to the source base station.
- the sending module is specifically configured to send a first message to the source base station, where the first message includes the first indication information.
- the acquiring module is specifically configured to: receive a second message sent by the source base station, where the second message includes the first indication information.
- it further includes a receiving module configured to: receive a second message sent by the source base station, the second message including second indication information, and the second indication information is When the source base station determines the time when the terminal device is handed over from the first cell of the source base station to the second cell of the target base station, and the terminal device transmits data with the source base station and the target base station respectively, the second indication information is different from the first indication information.
- an embodiment of the present application provides a terminal device, including a receiving module, configured to receive first indication information sent by a source base station.
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- the processing module is configured to respectively transmit data with the source base station and the target base station according to the first indication information.
- an embodiment of the present application provides a communication device, where the communication device is a source base station, a target base station, or a terminal device.
- the communication device includes a processor, a memory, and a transceiver.
- the transceiver is used to communicate with other devices.
- the memory is used to store instructions, and the processor is used to execute the instructions stored in the memory, so that the base station executes the operations performed by the source base station or the target base station in the above first aspect, or executes the handover method provided in the above second aspect.
- an embodiment of the present application provides a system for handover, including: a source base station and a target base station.
- the source base station and the target base station are used to obtain the first indication information.
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- the source base station is further configured to send first indication information to the terminal device.
- the source base station is specifically configured to: the source base station receives the first indication information sent by the target base station.
- the source base station is specifically configured to: the source base station receives the first message sent by the target base station, where the first message includes the first indication information.
- the source base station is further configured to: the source base station sends a second message to the target base station, where the second message includes the first indication information.
- the source base station is further configured to: the source base station sends a second message to the target base station, the second message includes second indication information, and the second indication information is determined by the source base station When the terminal device is handed over from the first cell of the source base station to the second cell of the target base station, when the terminal device transmits data with the source base station and the target base station respectively, the second indication information is different from the first indication information.
- the target base station is specifically configured to: the target base station receives a second message sent by the source base station, and the second message includes the first indication information.
- an embodiment of the present application provides a storage medium, including: a readable storage medium and a computer program, the computer program is used to implement the operations performed by the source base station or the target base station in the first aspect above, or to implement the operations provided in the second aspect above The switching method.
- the embodiments of the present application provide a computer program product containing instructions, which when the instructions run on a computer or processor, cause the computer or processor to perform the operations performed by the source base station or the target base station in the first aspect, or Perform the handover method provided in the above second aspect.
- the first indication information further indicates whether the time for transmitting data has been adjusted according to the system time difference between the source base station and the target base station.
- the first indication information further indicates that the time for transmitting the data is based on the system time of the source base station or the system time of the target base station.
- the first indication information includes at least one of the following:
- Index value there is a corresponding relationship between the index value and the time for transmitting data through the source base station and the target base station when the terminal device switches from the first cell to the second cell;
- the first numerical value is used to indicate the time for transmitting data through the source base station in a preset period when the terminal device switches from the first cell to the second cell;
- the second value is used to indicate the time for transmitting data through the target base station in the preset period when the terminal device switches from the first cell to the second cell;
- N is an integer greater than 1; each indicator field corresponds to a unit time in the preset period, and the indicator field is used to indicate the unit time corresponding to the indicator field when the terminal device switches from the first cell to the second cell Data is transmitted internally through the source base station or the target base station.
- the aforementioned communication device or terminal device may also be an integrated circuit (IC) chip or the like capable of realizing the same function.
- IC integrated circuit
- FIG. 1 is an architecture diagram of a communication system to which an embodiment of this application is applicable;
- Figure 2 is a message interaction diagram of the existing handover method
- FIG. 3 is a message interaction diagram of the handover method provided by an embodiment of the application.
- FIG. 4 is another message interaction diagram of the handover method provided by the embodiment of this application.
- FIG. 5 is another message interaction diagram of the handover method provided by the embodiment of this application.
- FIG. 6 is another message interaction diagram of the handover method provided by the embodiment of this application.
- FIG. 7 is a schematic structural diagram of a source base station provided by an embodiment of the application.
- FIG. 8 is a schematic structural diagram of a target base station provided by an embodiment of the application.
- FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
- FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of this application.
- the communication system may include a terminal device 100, a source base station 200, and a target base station 300.
- the embodiment of the present application does not limit the names of the terminal device 100, the source base station 200, and the target base station 300.
- a base station may also be called a network device.
- the source base station may also be called a source network device, and the target base station may also be called a target network device.
- the embodiment of the present application does not limit the number of terminal equipment 100, source base station 200, and target base station 300.
- the source base station 200 and the target base station 300 each have a certain coverage area.
- the coverage areas of the source base station 200 and the target base station 300 may have overlapping areas.
- a terminal device located within the coverage area of the source base station 200 may communicate with the source base station 200 in a wireless manner.
- Terminal devices located within the coverage area of the target base station 300 may communicate with the target base station 300 in a wireless manner.
- the terminal equipment located in the overlapping area can communicate with the source base station 200 and the target base station 300 in a wireless manner.
- the terminal device 100 When the terminal device 100 acts as a sender, it can send uplink information to the source base station 200.
- the source base station 200 as a receiver can receive the uplink information sent by the terminal device 100.
- the terminal device 100 may be a fixed position or movable.
- the communication system may also include other devices.
- the communication system may also include core network equipment (not shown in FIG. 1).
- the source base station 200 and the target base station 300 may be connected to the core network equipment in a wireless or wired manner.
- the core network equipment, the source base station 200, and the target base station 300 may be separate and different physical equipment, or the functions of the core network equipment and the functions of the source base station 200 and the target base station 300 may be integrated on the same physical equipment, or one The physical equipment integrates part of the functions of the core network equipment and part of the functions of the source base station 200 and the target base station 300.
- the communication system may also include a wireless relay device or a wireless backhaul device (not shown in FIG. 1).
- the source base station 200 and the target base station 300 are devices for transmitting and receiving signals on the network side, for example, a radio access network (RAN) node that connects a terminal device to a wireless network.
- RAN nodes are: new radio access technology (NR) (or 5G, new air interface) system of the new generation base station (generation Node B, gNB), transmission reception point (transmission reception point) , TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B, NB), base station controller (BSC), base station transceiver Station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), relay station, or wireless fidelity (Wifi) access Point (access point, AP), etc.
- NR new radio access technology
- gNB new radio access technology
- TRP transmission reception point
- eNB evolved Node B
- RNC
- a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.
- the wireless coverage areas of the source base station 200 and the target base station 300 may include one or more cells.
- the terminal device 100 within the coverage of the cell communicates with the source base station 200 and the target base station 300 through the transmission resources (for example, frequency domain resources, spectrum resources, or time-frequency resources) of the cell.
- the cell may be a macro cell or a small cell (small cell).
- the small cell may include: a metro cell, a micro cell, a pico cell, or a femto cell, etc.
- the embodiment of the present application does not limit the specific technologies and specific equipment forms adopted by the source base station 200 and the target base station 300.
- the terminal device 100 also known as user equipment (UE), mobile station (MS), or mobile terminal (MT), is a device that provides users with voice/data connectivity , For example, handheld devices with wireless connectivity, or in-vehicle devices.
- terminal devices are: mobile phones (mobile phones), tablet computers, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid)
- Fig. 2 is a message interaction diagram of the existing handover method.
- the executive body involves terminal equipment, source base station and target base station.
- Switching methods can include:
- the source base station sends a radio resource control (radio resource control, RRC) reconfiguration message to the terminal device.
- RRC radio resource control
- the terminal device receives the RRC reconfiguration message sent by the source base station.
- the terminal device is currently in the coverage area of the source cell of the source base station.
- the terminal device is in the connected state.
- the terminal device can perform signal measurement according to the RRC reconfiguration message.
- the RRC reconfiguration message may include but is not limited to parameters such as measurement object, report configuration, and measurement identifier.
- S202 The terminal device sends a measurement report (Measure Report) to the source base station.
- the source base station receives the measurement report sent by the terminal device.
- the terminal device can generate a measurement report after measuring the cell according to the RRC reconfiguration message.
- the cell may be a cell indicated in the RRC reconfiguration message or a cell determined according to the RRC reconfiguration message.
- the cell may include, but is not limited to, the same-frequency neighboring cell and the different-frequency neighboring cell of the source cell currently accessed by the terminal device.
- the terminal equipment can report various events to the source base station through the measurement report.
- the measurement report may include, but is not limited to, an intra-frequency measurement report and an inter-frequency measurement report. This application does not limit the time when the terminal device reports the measurement report.
- the terminal device when the signal strength of the source cell currently accessed by the terminal device is lower than the first preset threshold and the signal strength of the target cell is higher than the second preset threshold, the terminal device sends a measurement report to the source base station.
- the terminal device there is no limitation on the specific selection of the first preset threshold and the second preset threshold.
- S203 The source base station makes a handover decision to determine whether the terminal device needs to be handed over.
- the source base station determines whether the terminal device needs to be handed over according to the measurement report. If it is determined that the terminal device needs to be switched, continue to perform S204.
- the source base station sends a handover request message (Handover Request) to the target base station.
- Handover Request a handover request message
- the target base station receives the handover request message sent by the source base station.
- S205 The target base station performs admission control (admission control).
- the target base station determines whether to allow the terminal device to access according to its own connection number and other parameters. If the terminal device is allowed to access, continue to perform S206.
- the target base station sends a handover request acknowledgement message (Handover Request ACK) to the source base station.
- Handover Request ACK a handover request acknowledgement message
- the source base station receives the handover request confirmation message sent by the target base station.
- the handover request confirmation message may include, but is not limited to, parameters such as a new cell radio network temporary identity (C-RNTI), target base station security algorithm, and so on.
- C-RNTI new cell radio network temporary identity
- target base station security algorithm target base station security algorithm
- the source base station sends an RRC reconfiguration message to the terminal device.
- the terminal device receives the RRC reconfiguration message sent by the source base station.
- the RRC reconfiguration message may also be referred to as a handover command message (Handover Command).
- the RRC reconfiguration message may include all or part of the content in the handover request confirmation message in S206.
- the RRC reconfiguration message may include but is not limited to parameters such as a new C-RNTI and a target base station security algorithm.
- S208 The terminal device initiates random access (random access) to the target base station.
- the terminal device sends an RRC reconfiguration complete message (RRC Reconfiguration Complete) to the target base station.
- RRC Reconfiguration Complete RRC Reconfiguration Complete
- the terminal device After the terminal device accesses the target cell of the target base station, the terminal device sends an RRC reconfiguration complete message to the target base station, thereby completing the handover from the source base station to the target base station.
- the terminal device can connect with the source base station and the target base station at the same time during the handover process, until the terminal device successfully accesses the target cell of the target base station, the terminal device disconnects from the source base station again Connection.
- the source cell and the target cell are adjacent to the same frequency, if the terminal device is connected to the source base station and the target base station at the same time, very serious co-frequency interference will occur, resulting in a decrease in communication quality.
- an embodiment of the present application provides a handover method, which can be applied to a same-frequency handover scenario where the source cell and the target cell are neighboring cells of the same frequency.
- the terminal device, the source base station, and the target base station obtain first indication information, which can instruct the terminal device to transmit to the source base station and the target base station when the terminal device switches from the source cell of the source base station to the target cell of the target base station. Data time.
- the terminal device can transmit data with the source base station or the target base station, which not only avoids the same frequency interference caused by the terminal device transmitting data with the source base station and the target base station at the same time, but also Ensure the uninterrupted transmission of the signal during the switching process, thereby improving the communication quality of the same frequency switching.
- Fig. 3 is a message interaction diagram of the handover method provided by an embodiment of the application.
- the execution subject involved may include a terminal device, a source base station, and a target base station.
- the handover method provided in this embodiment may include:
- S301 The source base station obtains first indication information.
- the target base station obtains first indication information
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- the source base station sends first indication information to the terminal device.
- the terminal device receives the first indication information sent by the source base station.
- the terminal device transmits data with the source base station according to the first indication information.
- the terminal device transmits data with the target base station according to the first indication information.
- this embodiment does not limit the execution sequence of S301 and S302.
- S301 may be executed before S302, or may be executed after S302.
- This embodiment does not limit the execution sequence of S304 and S305.
- the application scenario of the handover method provided in this embodiment is that the terminal device switches from the first cell of the source base station to the second cell of the target base station, which is an intra-frequency handover scenario.
- the source base station, the target base station and the terminal device all need to obtain the first indication information.
- the first indication information may indicate the time for the terminal device to transmit data with the source base station and the target base station during the same frequency handover process.
- the time for transmitting data between the source base station and the terminal device can be known, so as to transmit data with the terminal device within this time.
- the target base station by acquiring the first indication information, it is possible to know the time when the target base station and the terminal device transmit data, so as to transmit data with the terminal device within this time.
- the terminal device the first indication information sent by the source base station is received. Through the first indication information, it is possible to know when to transmit data with the source base station and when to transmit data with the target base station during the same frequency handover.
- the handover method provided in this embodiment obtains the first indication information through the source base station, the target base station, and the terminal device.
- the terminal device transmits data to one of the source base station and the target base station at any time. It avoids the same-frequency interference caused by simultaneous data transmission, and ensures the uninterrupted transmission of signals during the same-frequency switching process, and improves the communication quality of the same-frequency switching.
- transmitting data may include at least one of sending data and receiving data.
- the terminal device taking the data transmission between the terminal device and the source base station as an example, the terminal device can send data to the source base station during the data transmission time between the terminal device and the source base station, and correspondingly, the source base station can receive data sent by the terminal device.
- the source base station can also send data to the terminal device, and correspondingly, the terminal device receives the data sent by the source base station.
- the first indication information may also be referred to as time division multiplexing (TDM) information.
- TDM time division multiplexing
- the first cell may also be called the source cell, and the second cell may also be called the target cell.
- the first cell may be a time division duplex (time division duplex, TDD) cell or a frequency division duplex (frequency division duplex, FDD) cell.
- the second cell may be a TDD cell or an FDD cell.
- the system time of the first cell and the system time of the second cell may be the same or different.
- An application scenario where the system time of the first cell is the same as the system time of the second cell can be called a synchronization scenario.
- the application scenario where the system time of the first cell is different from the system time of the second cell may be called an asynchronous scenario.
- this embodiment does not limit the implementation manner for the source base station and the target base station to obtain the first indication information.
- the first indication information may be information preset and stored in the source base station and the target base station.
- the first indication information may be updated regularly. By presetting the first indication information, the method for acquiring the first indication information is simplified.
- multiple indication information can be pre-stored in the source base station and the target base station.
- the source base station and the target base station may obtain the first indication information from multiple indication information according to a preset rule.
- the preset rules may be related to the time of data transmission, the number of connected terminal devices, system load, channel quality, etc.
- the source base station and the target base station may obtain the first indication information through negotiation.
- the source base station may initiate a negotiation request to the target base station.
- the target base station may initiate a negotiation request to the source base station.
- the negotiation request may be any message between the source base station and the target base station, for example, an RRC message.
- the first indication information is obtained through negotiation between the source base station and the target base station, which further improves the conformity of the first indication information with the application scenario, and improves the communication quality of the same-frequency handover.
- the terminal device receiving the first indication information sent by the source base station may include:
- the terminal device receives a third message sent by the source base station, where the third message includes the first indication information.
- the third message may be any message sent by the source base station to the terminal device, for example, an RRC message. This embodiment does not limit the name of the third message.
- the third message may be the RRC reconfiguration message in S207 in FIG. 2.
- the third message may also be called a handover command message. It should be noted that, in order to make the messages involved in the embodiments of the present application easier to distinguish and have a clear meaning, the message carrying the first indication information sent by the source base station to the terminal device is called the third message.
- This embodiment provides a handover method, including: a source base station and a target base station obtain first indication information, the source base station sends the first indication information to a terminal device, and the terminal device transmits data to the source base station and the target base station respectively according to the first indication information.
- the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station.
- the first cell and the second cell are neighboring cells with the same frequency.
- the handover method provided in this embodiment uses the first indication information to transmit data to one of the source base station and the target base station at any time during the same-frequency handover, which avoids co-frequency interference and ensures the same frequency handover.
- the uninterrupted transmission of the signal in the process improves the communication quality of the same frequency handover.
- the message carrying indication information sent by the target base station to the source base station may be referred to as the first message, and the message carrying indication information sent by the source base station to the target base station It can be called the second message.
- the content included in the first message and the second message may be different.
- the name, message type, content included, and the manner in which the indication information is carried in the first message are related to the name, message type, and content included in the second message.
- the manner in which the indication information is carried in the second message is not limited.
- the first indication information is determined by the target base station and sent by the target base station to the source base station.
- the source base station receives the first indication information sent by the target base station.
- FIG. 4 is another message interaction diagram of the handover method provided by the embodiment of the application.
- S301 may be S402
- S302 may be S401.
- the handover method provided in this embodiment may include:
- the target base station obtains first indication information.
- the target base station sends a first message to the source base station, where the first message includes first indication information.
- the source base station receives the first message sent by the target base station.
- the target base station can determine the first indication information.
- the target base station sends the first indication information to the source base station, so that the source base station can obtain the first indication information.
- the source base station may send the first indication information to the terminal device.
- the source base station, the target base station, and the terminal device all obtain the first indication information.
- the source base station, the target base station, and the terminal device perform corresponding data transmission at the time indicated by the first indication information, which avoids co-frequency interference and improves the communication quality of co-frequency handover.
- the first message may be an RRC message sent by the target base station to the source base station.
- the first message will be exemplified in conjunction with FIG. 2.
- the first message may be the handover request acknowledgement message (Handover Request ACK) in S206 in FIG. 2.
- the handover request confirmation message has a preset structure.
- the handover request confirmation message includes the cell "Target NG-RAN node To Source NG-RAN node Transparent Container" (Target NG-RAN node To Source NG-RAN node Transparent Container).
- the cell is transparently transmitted to the source base station, that is, after the source base station receives the handover request confirmation message sent by the target base station, it does not parse the cell, and uses the cell as the third message or directly as a part of the third message.
- both the first part and the second part in the first message include the first indication information.
- the first part is a part analyzed by the source base station, and the second part is a part not analyzed by the source base station.
- the first part of the first message may be other parts of the handover request confirmation message except for the cell "transparent container from the target node to the source node".
- the second part of the first message may be the cell "transparent container from target node to source node" in the handover request confirmation message.
- the source base station can parse the first part, thereby obtaining the first indication information. Moreover, the source base station can directly send the second part to the terminal device, which is simple and easy to implement and easy to implement.
- the second cell is a TDD cell
- the first cell is a TDD cell or an FDD cell.
- the second cell is an FDD cell
- the first cell is an FDD cell.
- the base station corresponding to the TDD cell may preferentially determine the first indication information.
- the TDD cell may determine the first indication information.
- the base station corresponding to any cell may determine the first indication information.
- the target base station determines the first indication information.
- the target base station sends the first indication information to the source base station, so that the source base station can obtain the first indication information.
- the source base station may send the first indication information to the terminal device.
- the source base station, the target base station, and the terminal device perform corresponding data transmission at the time indicated by the first indication information, which avoids co-frequency interference and improves the communication quality of co-frequency handover.
- the first indication information is determined by the source base station and sent by the source base station to the target base station.
- the target base station can obtain the first indication information.
- FIG. 5 is another message interaction diagram of the handover method provided by the embodiment of this application.
- S301 may include S502
- S302 may include S501.
- the handover method provided in this embodiment may include:
- S501 The source base station sends a second message to the target base station, where the second message includes first indication information.
- the target base station receives the second message sent by the source base station.
- the target base station sends a first message to the source base station, where the first message includes first indication information.
- the source base station receives the first message sent by the target base station.
- the source base station may determine the first indication information.
- the source base station sends the first indication information to the target base station, so that the target base station can obtain the first indication information.
- the target base station sends a first message to the source base station, where the first message includes first indication information for indicating that the target base station has obtained the first indication information.
- the source base station may send the first indication information to the terminal device.
- the source base station, the target base station, and the terminal device all obtain the first indication information.
- the source base station, the target base station, and the terminal device perform corresponding data transmission at the time indicated by the first indication information, which avoids co-frequency interference and improves the communication quality of co-frequency handover.
- the second message may be an RRC message sent by the target base station to the source base station.
- the second message may be the handover request message (Handover Request) in S204 in FIG. 2.
- the first message may be an RRC message sent by the target base station to the source base station.
- the first message may be the handover request acknowledgement message (Handover Request ACK) in S206 in FIG. 2.
- Handover Request ACK handover request acknowledgement message
- the handover request confirmation message refer to the embodiment shown in FIG. 4, which is not repeated here.
- the second part in the first message includes the first indication information.
- the second part is a part that the source base station does not perform analysis.
- the second part of the first message may be the information element "transparent container from target node to source node" in the handover request confirmation message.
- the source base station By carrying the first indication information in the second part of the first message, after receiving the first message, the source base station does not obtain the first indication information by parsing the first message, which can implicitly determine that the target base station has obtained the first indication information .
- the source base station can directly send the second part to the terminal device, which is simple and easy to implement and easy to implement.
- both the first part and the second part in the first message include the first indication information.
- the first part is the part analyzed by the source base station.
- the first part of the first message may be other parts of the handover request confirmation message except for the cell "transparent container from the target node to the source node".
- the source base station can parse the first part, thereby obtaining the first indication information.
- the source base station may determine that the target base station has acquired the first indication information.
- the source base station can directly send the second part to the terminal device, which is simple and easy to implement and easy to implement.
- the first cell is a TDD cell
- the second cell is a TDD cell or an FDD cell.
- the first cell is an FDD cell
- the second cell is an FDD cell.
- the source base station determines the first indication information.
- the source base station sends the first indication information to the target base station, so that the target base station can obtain the first indication information.
- the target base station then sends the first indication information to the source base station, which is used to indicate that the target base station has obtained the first indication information.
- the source base station may send the first indication information to the terminal device.
- the source base station, the target base station, and the terminal device perform corresponding data transmission at the time indicated by the first indication information, which avoids co-frequency interference and improves the communication quality of co-frequency handover.
- the source base station may send the indication information determined by itself to the target base station.
- the target base station finally determines the first indication information according to the indication information sent by the source base station, and sends the first indication information to the source base station.
- the source base station receives the first indication information sent by the target base station.
- FIG. 6 is another message interaction diagram of the handover method provided by the embodiment of this application.
- S301 may include S602
- S302 may include S601 and S602.
- the handover method provided in this embodiment may include:
- the source base station sends a second message to the target base station, where the second message includes second indication information.
- the second indication information is the time for the terminal device to transmit data with the source base station and the target base station when the terminal device is handed over from the first cell of the source base station to the second cell of the target base station determined by the source base station.
- the target base station receives the second message sent by the source base station.
- the target base station sends a first message to the source base station, where the first message includes first indication information.
- the second indication information is different from the first indication information.
- the source base station receives the first message sent by the target base station.
- the source base station may first determine the second indication information, and send the second indication information to the target base station.
- the target base station may determine whether to use the second indication information according to the second indication information determined by the source base station in combination with other conditions.
- the first indication information may be determined.
- the target base station sends the first indication information to the source base station, so that the source base station can obtain the finally determined first indication information.
- the source base station may send the first indication information to the terminal device. In this way, the source base station, the target base station, and the terminal device all obtain the first indication information.
- the source base station, the target base station, and the terminal device perform corresponding data transmission at the time indicated by the first indication information, which avoids co-frequency interference and improves the communication quality of co-frequency handover.
- the first cell is a TDD cell
- the second cell is a TDD cell or an FDD cell.
- the first cell is an FDD cell
- the second cell is an FDD cell.
- the source base station first determines the second indication information, and sends the second indication information to the target base station.
- the target base station finally determines the first indication information according to the second indication information, and sends the first indication information to the source base station, so that the source base station can obtain the first indication information.
- the source base station may send the first indication information to the terminal device.
- the source base station, the target base station, and the terminal device perform corresponding data transmission at the time indicated by the first indication information, which avoids co-frequency interference and improves the communication quality of co-frequency handover.
- the indication information may be the first indication information or the second indication information.
- the indication information may include an index value. There is a correspondence between the index value and the time for transmitting data through the source base station and the target base station respectively when the terminal device switches from the first cell to the second cell.
- the source base station and the target base station may pre-store the correspondence between the index value and the time for transmitting data through the source base station and the target base station respectively when the terminal device switches from the first cell to the second cell.
- the corresponding relationship is searched through the index value included in the indication information, so as to determine the time for the terminal device to transmit data with the source base station and the target base station respectively.
- Table 1 shows the correspondence between the index value and the data transmission time.
- Table 1 there are 4 index values, with values ranging from 1 to 4. Each index value corresponds to a transmission time.
- the first indication information includes an index value of 2. It can be determined that the source base station and the target base station agree on a 40ms period. Among them, the first 20ms is used for data transmission between the terminal equipment and the source base station. It is implicitly determined, and the last 20ms is used for data transmission between the terminal equipment and the target base station.
- Table 1 is only examples, and do not limit the first indication information, the index value, and the correspondence relationship between the index value and the time of transmitting data.
- the first 20ms is used for data transmission between terminal equipment and source base station 2
- the first 20ms is used for data transmission between terminal equipment and target base station 3
- the even-numbered frame number is used to transmit data between the terminal equipment and the source base station 4
- the system frame Take the system frame as the dividing line
- the even-numbered frame number is used to transmit data between the terminal equipment and the target base station
- the indication information may include the first value.
- the first value is used to indicate the time for the terminal device to transmit data through the source base station in a preset period when it switches from the first cell to the second cell.
- the first indication information includes a first value of 16.
- the first value 16 may indicate that in 40 ms, the first 16 ms is used for data transmission between the terminal device and the source base station.
- this embodiment does not limit the specific value of the first value, the specific value of the preset period, and the position in the preset period of the time indicated by the first value for data transmission through the source base station.
- the indication information may include the second value.
- the second value is used to indicate the time for the terminal device to transmit data through the target base station in the preset period when the terminal device switches from the first cell to the second cell.
- the first indication information includes a second value 20.
- the second value 20 may indicate that in 40 ms, the last 20 ms is used for data transmission between the terminal device and the target base station.
- this embodiment does not limit the specific value of the second value, the specific value of the preset period, and the position in the preset period of the time indicated by the second value to transmit data through the target base station.
- the indication information may include N indication fields, where N is an integer greater than 1.
- Each indicator field corresponds to a unit time in a preset period, and the indicator field is used to instruct the terminal device to transmit data through the source base station or the target base station within the unit time corresponding to the indicator field when switching from the first cell to the second cell.
- the preset period is 10 ms
- N is equal to 10
- the target base station and the source base station agree that the period is 10 ms.
- the first indication information includes 10 indication fields with a value of 1111110000, it can indicate that in 10 ms, the first 6 ms is used for data transmission between the terminal device and the source base station, and the last 4 ms is used for data transmission between the terminal device and the target base station.
- this embodiment does not limit the specific value of N, the specific value of the preset period, and the specific value of each indicator field.
- the indication information may also indicate whether the data transmission time has been adjusted according to the system time difference between the source base station and the target base station.
- the system time of the first cell of the source base station and the second cell of the target base station are different, and there is a system time difference.
- the terminal device can also be indicated whether the terminal device’s data transmission time with the source base station and the target base station has already referred to the system time difference when the terminal device switches from the first cell of the source base station to the second cell of the target base station. . Therefore, the source base station, the target base station, and the terminal device can determine whether it is necessary to adjust the data transmission time according to the system time difference, which improves the accuracy of determining the transmission time.
- the indication information may include first identification information, and the value of the first identification information may indicate whether the time for transmitting data has been adjusted according to the system time difference between the source base station and the target base station.
- the first identification information is 1 bit.
- the first identification information indicates that the data transmission time has been adjusted according to the system time difference between the source base station and the target base station.
- the first identification information is 0, it indicates that the time for transmitting data has been adjusted according to the system time difference between the source base station and the target base station.
- the indication information may also indicate that the time for transmitting the data is based on the system time of the source base station or the system time of the target base station.
- the system time of the first cell of the source base station and the second cell of the target base station are different.
- the indication information it can also be indicated that when the terminal device switches from the first cell of the source base station to the second cell of the target base station, whether the terminal device transmits data with the source base station and the target base station respectively based on the system time of the source base station or the target base station The system time of the base station. Therefore, the source base station, the target base station, and the terminal device can determine the time to transmit data according to the system time of the source base station or the system time of the target base station, which improves the accuracy of determining the transmission time.
- the indication information may include second identification information, and the value of the second identification information may indicate that the time for transmitting data is based on the system time of the source base station or the system time of the target base station.
- This embodiment does not limit the number of bits occupied by the second identification information and the value of the second identification information.
- the first identification information is 2 bits.
- the second identification information is 11, it indicates that the time of data transmission is based on the system time of the source base station.
- the first identification information is 10
- the time indicating the data transmission is based on the system time of the target base station.
- Fig. 7 is a schematic structural diagram of a source base station provided by an embodiment of the application.
- the source base station provided in this embodiment is used to perform operations performed by the source base station in the handover method provided in any method embodiment of this application.
- the technical principles and technical effects are similar, so I won’t repeat them here.
- the source base station provided in this embodiment may include:
- the obtaining module 71 is configured to obtain first indication information; the first indication information indicates the time when the terminal device transmits data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station; The first cell and the second cell are adjacent to the same frequency;
- the sending module 72 is configured to send the first indication information to the terminal device.
- the acquiring module 71 is specifically configured to: receive the first indication information sent by the target base station.
- the acquiring module 71 is specifically configured to: receive a first message sent by the target base station, where the first message includes the first indication information.
- the sending module 72 is further configured to send a second message to the target base station, where the second message includes the first indication information.
- the sending module 72 is further configured to: the source base station sends a second message to the target base station, the second message includes second indication information, and the second indication information is determined by the source base station to instruct the terminal device to switch from the first cell of the source base station When arriving at the second cell of the target base station, the second indication information is different from the first indication information when the terminal device transmits data to the source base station and the target base station respectively.
- the first indication information also indicates whether the data transmission time has been adjusted according to the system time difference between the source base station and the target base station.
- the first indication information further indicates that the time for transmitting the data is based on the system time of the source base station or the system time of the target base station.
- the first indication information includes at least one of the following:
- Index value there is a corresponding relationship between the index value and the time for transmitting data through the source base station and the target base station when the terminal device switches from the first cell to the second cell;
- the first numerical value is used to indicate the time for transmitting data through the source base station in a preset period when the terminal device switches from the first cell to the second cell;
- the second value is used to indicate the time for transmitting data through the target base station in the preset period when the terminal device switches from the first cell to the second cell;
- N is an integer greater than 1; each indicator field corresponds to a unit time in the preset period, and the indicator field is used to indicate the unit time corresponding to the indicator field when the terminal device switches from the first cell to the second cell Data is transmitted internally through the source base station or the target base station.
- FIG. 8 is a schematic structural diagram of a target base station provided by an embodiment of the application.
- the target base station provided in this embodiment is used to perform operations performed by the target base station in the handover method provided in any method embodiment of this application.
- the technical principles and technical effects are similar, so I won’t repeat them here.
- the target base station provided in this embodiment may include:
- the obtaining module 81 is configured to obtain first indication information; the first indication information indicates the time for the terminal device to transmit data with the source base station and the target base station when the terminal device switches from the first cell of the source base station to the second cell of the target base station; The first cell and the second cell are neighboring cells with the same frequency.
- a sending module 82 is further included, and the sending module 82 is configured to send the first indication information to the source base station.
- the sending module 82 is specifically configured to send a first message to the source base station, where the first message includes the first indication information.
- the acquiring module 81 is specifically configured to: receive a second message sent by the source base station, where the second message includes the first indication information.
- the receiving module 83 is configured to receive a second message sent by the source base station, the second message including second indication information, and the second indication information is determined by the source base station and instructs the terminal device to receive information from the source base station.
- the second indication information is different from the first indication information when the terminal device transmits data to the source base station and the target base station respectively.
- the first indication information also indicates whether the data transmission time has been adjusted according to the system time difference between the source base station and the target base station.
- the first indication information further indicates that the time for transmitting the data is based on the system time of the source base station or the system time of the target base station.
- the first indication information includes at least one of the following:
- Index value there is a corresponding relationship between the index value and the time for transmitting data through the source base station and the target base station when the terminal device switches from the first cell to the second cell;
- the first numerical value is used to indicate the time for transmitting data through the source base station in a preset period when the terminal device switches from the first cell to the second cell;
- the second value is used to indicate the time for transmitting data through the target base station in the preset period when the terminal device switches from the first cell to the second cell;
- N is an integer greater than 1; each indicator field corresponds to a unit time in the preset period, and the indicator field is used to indicate the unit time corresponding to the indicator field when the terminal device switches from the first cell to the second cell Data is transmitted internally through the source base station or the target base station.
- FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the application.
- the terminal device provided in this embodiment is used to perform operations performed by the terminal device in the handover method provided in any method embodiment of this application.
- the technical principles and technical effects are similar, so I won’t repeat them here.
- the terminal device provided in this embodiment may include:
- the receiving module 91 is configured to receive the first indication information sent by the source base station; the first indication information indicates that when the terminal device switches from the first cell of the source base station to the second cell of the target base station, the terminal device transmits to the source base station and the target base station respectively Data time; the first cell and the second cell are neighboring cells with the same frequency;
- the processing module 92 is configured to respectively transmit data with the source base station and the target base station according to the first indication information.
- the first indication information also indicates whether the data transmission time has been adjusted according to the system time difference between the source base station and the target base station.
- the first indication information further indicates that the time for transmitting the data is based on the system time of the source base station or the system time of the target base station.
- each module in the device may be all implemented in the form of software called through processing elements, or all may be implemented in the form of hardware, some modules may also be implemented in the form of software called through the processing elements, and some modules are implemented in the form of hardware.
- each module can be a separately set up processing element, or it can be integrated in a certain chip of the device for implementation.
- it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device.
- all or part of these modules can be integrated together or implemented independently.
- the processing element described here can also become a processor, which can be an integrated circuit with signal processing capabilities.
- each step of the above method or each of the above modules may be implemented by an integrated logic circuit of hardware in a processor element or implemented in a form of being called by software through a processing element.
- the modules in the above device may be one or more integrated circuits configured to implement the above method, for example: one or more application specific integrated circuits (ASIC), or one or more Data signal processor (digital signal processor, DSP), or, one or more field programmable gate arrays (FPGA), or a combination of at least two of these integrated circuits.
- ASIC application specific integrated circuits
- DSP Data signal processor
- FPGA field programmable gate arrays
- the modules in the above device can be implemented in the form of a processing element scheduler
- the processing element can be a general-purpose processor, such as a CPU or other processors that can call programs.
- these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
- SOC system-on-a-chip
- the above module for receiving or sending may be the interface circuit of the above device, which is used to transmit signals with other devices.
- FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of this application.
- the communication device may be a source base station, a target base station or a terminal device.
- the communication device provided in this embodiment may include: a processor 1001, a memory 1002, and a transceiver 1003. Among them, the transceiver 1003 is used to communicate with other devices.
- the memory 1002 is used to store instructions.
- the processor 1001 is configured to execute instructions stored in the memory 1002, so that the communication device executes the operations performed by the source base station, the target base station, or the terminal device in the handover method provided in any embodiment of the present application.
- the specific implementation methods and technical effects are similar. I won't repeat it here.
- the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the implementation of this application.
- the general-purpose processor may be a microprocessor or any conventional processor.
- the steps of the method disclosed in the embodiments of the present application may be directly embodied as executed and completed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
- the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), for example Random access memory (random access memory, RAM).
- the memory is any medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
- the memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function, for storing program instructions and/or data.
- the embodiment of the present application also provides a system for handover, including the source base station and the target base station in the foregoing embodiment.
- the source base station and the target base station are used to obtain first indication information;
- the first indication information indicates that when the terminal device switches from the first cell of the source base station to the second cell of the target base station, the terminal device transmits data to the source base station and the target base station respectively Time; the first cell and the second cell are adjacent to the same frequency;
- the source base station is further configured to send first indication information to the terminal device.
- the source base station is specifically configured to: the source base station receives the first indication information sent by the target base station.
- the source base station is specifically configured to: the source base station receives the first message sent by the target base station, where the first message includes the first indication information.
- the source base station is further configured to: the source base station sends a second message to the target base station, where the second message includes the first indication information.
- the source base station is further configured to: the source base station sends a second message to the target base station, the second message includes second indication information, and the second indication information is determined by the source base station to instruct the terminal device to switch from the first cell of the source base station to In the second cell of the target base station, when the terminal device transmits data to the source base station and the target base station respectively, the second indication information is different from the first indication information.
- the target base station is specifically configured to: the target base station receives a second message sent by the source base station, where the second message includes the first indication information.
- the first indication information also indicates whether the data transmission time has been adjusted according to the system time difference between the source base station and the target base station.
- the first indication information further indicates that the time for transmitting the data is based on the system time of the source base station or the system time of the target base station.
- the first indication information includes at least one of the following:
- Index value there is a corresponding relationship between the index value and the time for transmitting data through the source base station and the target base station when the terminal device switches from the first cell to the second cell;
- the first numerical value is used to indicate the time for transmitting data through the source base station in a preset period when the terminal device switches from the first cell to the second cell;
- the second value is used to indicate the time for transmitting data through the target base station in the preset period when the terminal device switches from the first cell to the second cell;
- N is an integer greater than 1; each indicator field corresponds to a unit time in the preset period, and the indicator field is used to indicate the unit time corresponding to the indicator field when the terminal device switches from the first cell to the second cell Data is transmitted internally through the source base station or the target base station.
- the source base station included is used to perform operations performed by the source base station in the handover method provided in any method embodiment of this application
- the target base station included is used to perform the operations provided by any method embodiment of this application.
- the operations performed by the target base station in the handover method are similar in technical principles and technical effects, and will not be repeated here.
- the names of the source base station and the target base station are not limited in this embodiment, and may be different in different communication systems.
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Abstract
本申请实施例提供一种切换方法、用于切换的***和终端设备。切换方法包括:源基站和目标基站获取第一指示信息;第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间;第一小区与第二小区为同频邻区;源基站向终端设备发送第一指示信息。通过源基站、目标基站和终端设备均获取第一指示信息,在同频切换的过程中,终端设备在任意时间与源基站和目标基站中的一个传输数据,避免了同频干扰,确保了同频切换过程中信号的无中断传输,提升了同频切换的通信质量。
Description
本申请要求于2019年08月02日提交中国专利局、申请号为2019107102117、申请名称为“切换方法、用于切换的***和终端设备”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。
本申请实施例涉及通信领域,尤其涉及一种切换方法、用于切换的***和终端设备。
在通信网络中,当正在使用网络服务的终端设备从一个小区移动到另一个小区时,或者由于业务负荷量调整、设备故障等原因,为了保证通信的连续性和服务的质量,***需要将该终端设备与源小区的通信链路转移到新的小区上,这个过程称为切换。
终端设备从源小区向目标小区切换的过程中,可能会引起短暂的信号中断和时延。为了实现无中断,终端设备可以在切换过程中同时与源基站和目标基站连接,直到终端设备成功接入目标小区后再断开与源基站的连接。
但是,当源小区和目标小区是同频邻区时,终端设备如果同时与源基站和目标基站连接,将产生非常严重的同频干扰,导致通信质量下降。
发明内容
本申请实施例提供一种切换方法、用于切换的***和终端设备,避免了同频干扰,确保了同频切换过程中信号的无中断传输,提升了同频切换的通信质量。
第一方面,本申请实施例提供一种切换方法,包括:源基站和目标基站获取第一指示信息。其中,第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。源基站向终端设备发送第一指示信息。
通过第一方面提供的切换方法,源基站、目标基站和终端设备均获取第一指示信息,在同频切换的过程中,终端设备在任意时间与源基站和目标基站中的一个传输数据,避免了同时传输数据时带来的同频干扰,又确保了同频切换过程中信号的无中断传输,提升了同频切换的通信质量。
可选的,在第一方面的一种可能的实施方式中,源基站获取第一指示信息,包括:源基站接收目标基站发送的第一指示信息。
可选的,在第一方面的一种可能的实施方式中,源基站接收目标基站发送的第一指示信息,包括:源基站接收目标基站发送的第一消息,第一消息包括第一指示信息。
可选的,在第一方面的一种可能的实施方式中,源基站接收目标基站发送的第一消息之前,还包括:源基站向目标基站发送第二消息,第二消息包括第一指示信息。
可选的,在第一方面的一种可能的实施方式中,源基站接收目标基站发送的第一消息之前,还包括:源基站向目标基站发送第二消息,第二消息包括第二指示信息,第二指示信息为源基站确定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间,第二指示信息与第一指示信息不同。
可选的,在第一方面的一种可能的实施方式中,目标基站获取第一指示信息,包括:目标基站接收源基站发送的第二消息,第二消息包括第一指示信息。
第二方面,本申请实施例提供一种切换方法,包括:终端设备接收源基站发送的第一指示信息。其中,第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。终端设备根据第一指示信息分别与源基站和目标基站传输数据。
第三方面,本申请实施例提供一种源基站,包括:获取模块,用于获取第一指示信息。其中,第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。发送模块,用于向终端设备发送第一指示信息。
可选的,在第三方面的一种可能的实施方式中,获取模块具体用于:接收目标基站发送的第一指示信息。
可选的,在第三方面的一种可能的实施方式中,获取模块具体用于:接收目标基站发送的第一消息,第一消息包括第一指示信息。
可选的,在第三方面的一种可能的实施方式中,发送模块还用于:向目标基站发送第二消息,第二消息包括第一指示信息。
可选的,在第三方面的一种可能的实施方式中,发送模块还用于:源基站向目标基站发送第二消息,第二消息包括第二指示信息,第二指示信息为源基站确定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间,第二指示信息与第一指示信息不同。
第四方面,本申请实施例提供一种目标基站,包括:获取模块,用于获取第一指示信息。其中,第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。
可选的,在第四方面的一种可能的实施方式中,还包括发送模块,发送模块用于:向源基站发送第一指示信息。
可选的,在第四方面的一种可能的实施方式中,发送模块具体用于:向源基站发送第一消息,第一消息包括第一指示信息。
可选的,在第四方面的一种可能的实施方式中,获取模块具体用于:接收源基站发送的第二消息,第二消息包括第一指示信息。
可选的,在第四方面的一种可能的实施方式中,还包括接收模块,接收模块用于:接收源基站发送的第二消息,第二消息包括第二指示信息,第二指示信息为源基站确 定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间,第二指示信息与第一指示信息不同。
第五方面,本申请实施例提供一种终端设备,包括:接收模块,用于接收源基站发送的第一指示信息。其中,第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。处理模块,用于根据第一指示信息分别与源基站和目标基站传输数据。
第六方面,本申请实施例提供一种通信设备,通信设备为源基站、目标基站或者终端设备。该通信设备包括处理器、存储器和收发器。收发器用于与其他设备通信。存储器用于存储指令,处理器用于执行存储器中存储的指令,以使基站执行上述第一方面中源基站或者目标基站执行的操作,或者执行上述第二方面提供的切换方法。
第七方面,本申请实施例提供一种用于切换的***,包括:源基站和目标基站。源基站和目标基站,用于获取第一指示信息。第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。源基站还用于,向终端设备发送第一指示信息。
可选的,在第七方面的一种可能的实施方式中,源基站具体用于:源基站接收目标基站发送的第一指示信息。
可选的,在第七方面的一种可能的实施方式中,源基站具体用于:源基站接收目标基站发送的第一消息,第一消息包括第一指示信息。
可选的,在第七方面的一种可能的实施方式中,源基站还用于:源基站向目标基站发送第二消息,第二消息包括第一指示信息。
可选的,在第七方面的一种可能的实施方式中,源基站还用于:源基站向目标基站发送第二消息,第二消息包括第二指示信息,第二指示信息为源基站确定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间,第二指示信息与第一指示信息不同。
可选的,在第七方面的一种可能的实施方式中,目标基站具体用于:目标基站接收源基站发送的第二消息,第二消息包括第一指示信息。
第八方面,本申请实施例提供一种存储介质,包括:可读存储介质和计算机程序,计算机程序用于实现上述第一方面中源基站或者目标基站执行的操作,或者实现上述第二方面提供的切换方法。
第九方面,本申请实施例提供一种包含指令的计算机程序产品,当指令在计算机或处理器上运行时,使得计算机或处理器执行上述第一方面中源基站或者目标基站执行的操作,或者执行上述第二方面提供的切换方法。
在以上各个方面中,可选的,在一种可能的实施方式中,第一指示信息还指示传输数据的时间是否已经根据源基站与目标基站之间的***时间差值进行过调整。
在以上各个方面中,可选的,在一种可能的实施方式中,第一指示信息还指示传输数据的时间是基于源基站的***时间或者是基于目标基站的***时间。
在以上各个方面中,可选的,在一种可能的实施方式中,第一指示信息包括下列 中的至少一个:
索引值;索引值与终端设备从第一小区切换到第二小区时分别通过源基站和目标基站传输数据的时间存在对应关系;
第一数值;第一数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过源基站传输数据的时间;
第二数值;第二数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过目标基站传输数据的时间;
N个指示域,N为大于1的整数;每个指示域对应预设周期中的一个单位时间,指示域用于指示终端设备从第一小区切换到第二小区时在指示域对应的单位时间内通过源基站或者目标基站传输数据。
上述通信设备或终端设备还可以是能够实现相同功能的集成电路(integrated circuit,IC)芯片等。
图1为本申请实施例适用的一种通信***的架构图;
图2为现有的切换方法的一种消息交互图;
图3为本申请实施例提供的切换方法的一种消息交互图;
图4为本申请实施例提供的切换方法的另一种消息交互图;
图5为本申请实施例提供的切换方法的又一种消息交互图;
图6为本申请实施例提供的切换方法的又一种消息交互图;
图7为本申请实施例提供的源基站的结构示意图;
图8为本申请实施例提供的目标基站的结构示意图;
图9为本申请实施例提供的终端设备的结构示意图;
图10为本申请实施例提供的通信设备的结构示意图。
下面结合附图描述本申请实施例。
请参考图1,其为本申请实施例适用的一种通信***的架构图。如图1所示,通信***可以包括终端设备100、源基站200和目标基站300。本申请实施例对于终端设备100、源基站200和目标基站300的名称不做限定。例如,基站也可以称为网络设备。源基站也可以称为源网络设备,目标基站也可以称为目标网络设备。本申请实施例对于终端设备100、源基站200和目标基站300的数量不做限定。源基站200和目标基站300分别具有一定的覆盖范围。源基站200和目标基站300的覆盖范围可以具有重叠区域。位于源基站200覆盖范围内的终端设备,可以通过无线的方式与源基站200通信。位于目标基站300覆盖范围内的终端设备,可以通过无线的方式与目标基站300通信。位于重叠区域内的终端设备,可以通过无线的方式与源基站200和目标基站300通信。以源基站200与终端设备100之间的通信来说,当源基站200作为发送者时,可以向终端设备100发送下行信息。相应的,终端设备100作为接收者,可 以接收源基站200发送的下行信息。当终端设备100作为发送者时,可以向源基站200发送上行信息。相应的,源基站200作为接收者,可以接收终端设备100发送的上行信息。其中,终端设备100可以是固定位置的,也可以是可移动的。
可选的,通信***还可以包括其它设备。例如,通信***还可以包括核心网设备(图1未示出)。源基站200、目标基站300可以通过无线或有线的方式与核心网设备连接。核心网设备与源基站200、目标基站300可以是独立的不同的物理设备,也可以将核心网设备的功能与源基站200、目标基站300的功能集成在同一个物理设备上,还可以是一个物理设备上集成了核心网设备的部分功能和源基站200、目标基站300的部分功能。又例如,通信***还可以包括无线中继设备或无线回传设备(图1未示出)。
源基站200和目标基站300,是网络侧中一种用于发射和接收信号的装置,例如将终端设备接入到无线网络的无线接入网(radio access network,RAN)节点。目前,一些RAN节点的举例为:新无线接入技术(new radio access technology,NR)(或5G、新空口)***中的新一代基站(generation Node B,gNB)、传输接收点(transmission reception point,TRP)、演进型节点B(evolved Node B,eNB)、无线网络控制器(radio network controller,RNC)、节点B(Node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved NodeB,或home Node B,HNB)、基带单元(base band unit,BBU),中继站,或无线保真(wireless fidelity,Wifi)接入点(access point,AP)等。在一种网络结构中,网络设备可以包括集中单元(centralized unit,CU)节点、或分布单元(distributed unit,DU)节点、或包括CU节点和DU节点的RAN设备。源基站200和目标基站300的无线覆盖区域可以包括一个或多个小区。小区覆盖范围内的终端设备100通过该小区的传输资源(例如,频域资源,频谱资源,或时频资源)与源基站200和目标基站300进行通信。该小区可以是宏小区,也可以是小小区(small cell)。可选的,小小区可以包括:城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、或毫微微小区(femto cell)等。本申请实施例对于源基站200和目标基站300所采用的具体技术和具体设备形态不做限定。
终端设备100,又称之为用户设备(user equipment,UE)、移动台(mobile station,MS)、或移动终端(mobile terminal,MT)等,是一种向用户提供语音/数据连通性的设备,例如,具有无线连接功能的手持式设备、或车载设备等。目前,一些终端设备的举例为:手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device,MID)、可穿戴设备、虚拟现实(virtual reality,VR)设备、增强现实(augmented reality,AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、或智慧家庭(smart home)中的无线终端等。
下面,对现有的切换方法的流程进行说明。请参考图2,其为现有的切换方法的 一种消息交互图。如图2所示,执行主体涉及终端设备、源基站和目标基站。切换方法可以包括:
S201、源基站向终端设备发送无线资源控制(radio resource control,RRC)重配置消息。
相应的,终端设备接收源基站发送的RRC重配置消息。
其中,终端设备当前处于源基站的源小区的覆盖范围内。终端设备处于连接态。终端设备可以根据RRC重配置消息进行信号测量。可选的,RRC重配置消息可以包括但不限于测量对象、报告配置、测量标识等参数。
S202、终端设备向源基站发送测量报告(Measure Report)。
相应的,源基站接收终端设备发送的测量报告。
其中,终端设备根据RRC重配置消息对小区进行测量后,可以生成测量报告。所述小区可以为RRC重配置消息中指示的小区或者根据RRC重配置消息确定的小区。例如,所述小区可以包括但不限于终端设备当前接入的源小区的同频邻区和异频邻区。终端设备通过测量报告,可以将各类事件上报给源基站。可选的,所述测量报告可以包括但不限于同频测量报告和异频测量报告。本申请对于终端设备上报测量报告的时机不作限定。例如,当终端设备当前接入的源小区的信号强度低于第一预设门限且目标小区的信号强度高于第二预设门限时,终端设备向源基站发送测量报告。其中,对于第一预设门限和第二预设门限的具体取指不做限定。
S203、源基站进行切换判决,确定终端设备是否需要切换。
具体的,源基站接收到终端设备上报的测量报告后,根据测量报告确定终端设备是否需要切换。如果确定终端设备需要切换,则继续执行S204。
S204、源基站向目标基站发送切换请求消息(Handover Request)。
相应的,目标基站接收源基站发送的切换请求消息。
S205、目标基站进行准入控制(admission control)。
具体的,目标基站根据自身连接数等参数确定是否允许终端设备接入。如果允许终端设备接入,则继续执行S206。
S206、目标基站向源基站发送切换请求确认消息(Handover Request ACK)。
相应的,源基站接收目标基站发送的切换请求确认消息。
可选的,切换请求确认消息可以包括但不限于新的小区无线网络临时标识(cell radio network temporary identity,C-RNTI)、目标基站安全算法等参数。
S207、源基站向终端设备发送RRC重配置消息。
相应的,终端设备接收源基站发送的RRC重配置消息。
在本步骤中,RRC重配置消息也可以称为切换命令消息(Handover Command)。所述RRC重配置消息中可以包括S206中切换请求确认消息中的全部或部分内容。可选的,RRC重配置消息可以包括但不限于新的C-RNTI、目标基站安全算法等参数。
S208、终端设备向目标基站发起随机接入(random access)。
S209、终端设备向目标基站发送RRC重配置完成消息(RRC Reconfiguration Complete)。
具体的,当终端设备接入目标基站的目标小区后,终端设备向目标基站发送RRC 重配置完成消息,从而完成从源基站向目标基站的切换。
在上述切换的过程中,为了实现信号无中断,终端设备在切换过程中可以同时与源基站和目标基站连接,直到终端设备成功接入目标基站的目标小区后,终端设备再断开与源基站的连接。但是,当源小区和目标小区是同频邻区时,终端设备如果同时与源基站和目标基站连接,将会产生非常严重的同频干扰,导致通信质量下降。
有鉴于此,本申请实施例提供一种切换方法,可以应用于源小区与目标小区为同频邻区的同频切换场景。终端设备、源基站和目标基站通过获取第一指示信息,所述第一指示信息可以指示终端设备从源基站的源小区切换到目标基站的目标小区时,终端设备分别与源基站和目标基站传输数据的时间,这样,在同频切换过程中的任意时间,终端设备可以与源基站或者目标基站传输数据,既避免了终端设备同时与源基站和目标基站传输数据带来的同频干扰,又确保了切换过程中信号的无中断传输,从而提升了同频切换的通信质量。
下面结合附图进行描述。
其中,本申请中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换。
图3为本申请实施例提供的切换方法的一种消息交互图。本实施例提供的切换方法,涉及的执行主体可以包括终端设备、源基站和目标基站。如图3所示,本实施例提供的切换方法,可以包括:
S301、源基站获取第一指示信息。
S302、目标基站获取第一指示信息
其中,第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。
S303、源基站向终端设备发送第一指示信息。
相应的,终端设备接收源基站发送的第一指示信息。
S304、终端设备根据第一指示信息与源基站传输数据。
S305、终端设备根据第一指示信息与目标基站传输数据。
其中,本实施例对于S301和S302的执行顺序不做限定。例如,S301可以位于S302之前执行,也可以位于S302之后执行。本实施例对于S304和S305的执行顺序不做限定。
具体的,本实施例提供的切换方法,应用场景为终端设备从源基站的第一小区切换到目标基站的第二小区,为同频切换场景。源基站、目标基站和终端设备均需要获取第一指示信息。所述第一指示信息,可以指示终端设备在同频切换的过程中,终端设备分别与源基站和目标基站传输数据的时间。对于源基站来说,通过获取第一指示信息,可以知道源基站与终端设备传输数据的时间,从而在该时间内与终端设备传输数据。对于目标基站来说,通过获取第一指示信息,可以知道目标基站与终端设备传 输数据的时间,从而在该时间内与终端设备传输数据。对于终端设备来说,接收源基站发送的第一指示信息。通过所述第一指示信息,可以知道在同频切换的过程中何时与源基站传输数据,何时与目标基站传输数据。
可见,本实施例提供的切换方法,通过源基站、目标基站和终端设备均获取第一指示信息,在同频切换的过程中,终端设备在任意时间与源基站和目标基站中的一个传输数据,避免了同时传输数据时带来的同频干扰,又确保了同频切换过程中信号的无中断传输,提升了同频切换的通信质量。
可选的,传输数据可以包括发送数据和接收数据中的至少一项。例如,以终端设备与源基站传输数据为例,在终端设备与源基站传输数据的时间内,终端设备可以向源基站发送数据,相应的,源基站可以接收终端设备发送的数据。源基站也可以向终端设备发送数据,相应的,终端设备接收源基站发送的数据。
需要说明的是,本实施例对于第一指示信息、第一小区和第二小区的名称不做限定。例如,第一指示信息也可以称为时分复用(time division multiplexing,TDM)信息。第一小区也可以称为源小区,第二小区也可以称为目标小区。
可选的,第一小区可以为时分双工(time division dulplex,TDD)小区或者频分双工(frequency division dulplex,FDD)小区。可选的,第二小区可以为TDD小区或者FDD小区。
可选的,第一小区的***时间与第二小区的***时间可以相同,也可以不同。对于第一小区的***时间与第二小区的***时间相同的应用场景,可以称为同步场景。对于第一小区的***时间与第二小区的***时间不同的应用场景,可以称为异步场景。
其中,本实施例对于源基站和目标基站获取第一指示信息的实现方式不做限定。
可选的,第一指示信息可以为预先设置并存储在源基站和目标基站中的信息。可选的,所述第一指示信息可以定期更新。通过预先设置第一指示信息,简化了第一指示信息的获取方式。
可选的,源基站和目标基站中可以预先存储多个指示信息。源基站和目标基站可以按照预先设置的规则从多个指示信息中获取第一指示信息。所述预先设置的规则可以与传输数据的时间、连接的终端设备数量、***负荷、信道质量等相关。通过预先设置多个指示信息并根据一定的规则获取第一指示信息,使得第一指示信息更加符合应用场景,提升了同频切换的通信质量。
可选的,源基站和目标基站可以通过协商的方式获取第一指示信息。可选的,源基站可以向目标基站发起协商请求。可选的,目标基站可以向源基站发起协商请求。其中,所述协商请求可以为源基站与目标基站之间的任意消息,例如,RRC消息。通过源基站和目标基站进行协商的方式获取第一指示信息,进一步提升了第一指示信息与应用场景的符合度,提升了同频切换的通信质量。
可选的,S303中,终端设备接收源基站发送的第一指示信息,可以包括:
终端设备接收源基站发送的第三消息,第三消息包括第一指示信息。
其中,第三消息可以为源基站发送给终端设备的任意消息,例如,RRC消息。本实施例对于第三消息的名称不做限定。可选的,第三消息可以为图2中S207中的RRC重配置消息。第三消息也可以称为切换命令消息。需要说明,为了使得本申请各实施 例中涉及的消息更容易区分和含义清晰,源基站发送给终端设备的携带第一指示信息的消息称为第三消息。
本实施例提供一种切换方法,包括:源基站和目标基站获取第一指示信息,源基站向终端设备发送第一指示信息,终端设备根据第一指示信息分别与源基站和目标基站传输数据。其中,第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。第一小区与第二小区为同频邻区。本实施例提供的切换方法,通过第一指示信息,在同频切换的过程中,终端设备在任意时间与源基站和目标基站中的一个传输数据,避免了同频干扰,确保了同频切换过程中信号的无中断传输,提升了同频切换的通信质量。
下面,通过图4~图6所示实施例对S301和S302中,源基站和目标基站获取第一指示信息的实现方式进行说明。
需要说明的是,在图4~图6所示实施例中,将目标基站发送给源基站的携带指示信息的消息可以称为第一消息,将源基站发送给目标基站的携带指示信息的消息可以称为第二消息。在不同的实施例中,第一消息和第二消息中包括的内容可以不同。
需要说明的是,本申请实施例对于第一消息的名称、消息类型、包括的内容、指示信息在第一消息中的携带方式,以及,对于第二消息的名称、消息类型、包括的内容、指示信息在第二消息中的携带方式不做限定。
在本申请的另一个实施例中,第一指示信息由目标基站确定,并由目标基站发送给源基站。相应的,源基站接收目标基站发送的第一指示信息。请参照图4,其为本申请实施例提供的切换方法的另一种消息交互图。在本实施例中,S301可以为S402,S302可以为S401。
如图4所示,本实施例提供的切换方法,可以包括:
S401、目标基站获取第一指示信息。
S402、目标基站向源基站发送第一消息,所述第一消息包括第一指示信息。
相应的,源基站接收目标基站发送的第一消息。
可见,在本实施例中,目标基站可以确定第一指示信息。目标基站将第一指示信息发送给源基站,从而,源基站可以获取第一指示信息。后续,源基站可以将第一指示信息发送给终端设备。这样,源基站、目标基站和终端设备均获取了第一指示信息。源基站、目标基站和终端设备通过第一指示信息指示的时间进行相应的数据传输,避免了同频干扰,提升了同频切换的通信质量。
可选的,第一消息可以为目标基站发送给源基站的RRC消息。
下面,结合图2,对第一消息进行示例性说明。在本示例中,第一消息可以为图2中S206中的切换请求确认消息(Handover Request ACK)。
根据通信协议TS 38.423,切换请求确认消息具有预设结构。其中,切换请求确认消息中包括信元“目标节点到源节点的透明容器”(Target NG-RAN node To Source NG-RAN node Transparent Container)。该信元对于源基站来说是透传的,即,源基站接收目标基站发送的切换请求确认消息后,不解析该信元,将该信元作为第三消息或 者作为第三消息的一部分直接发送给终端设备。可选的,第一消息中的第一部分和第二部分均包括所述第一指示信息。所述第一部分为源基站进行解析的部分,所述第二部分为源基站不进行解析的部分。例如,第一消息中的第一部分可以为切换请求确认消息中除信元“目标节点到源节点的透明容器”之外的其他部分。第一消息中的第二部分可以为切换请求确认消息中的信元“目标节点到源节点的透明容器”。
通过在第一消息中的第一部分和第二部分均携带第一指示信息,源基站接收到第一消息后,可以对第一部分进行解析,从而获取到第一指示信息。而且,源基站可以直接将第二部分发送给终端设备,方法简单易行,易于实现。
可选的,第二小区为TDD小区,第一小区为TDD小区或者FDD小区。可选的,第二小区为FDD小区,第一小区为FDD小区。
通常,对于FDD模式,可以有两个独立的信道,一个用来接收下行的数据,一个用来发送上行的数据。两个信道之间存在一个保护频段,以防止产生相互干扰。对于TDD模式,接收下行数据和发送上行数据通常在同一频率信道的不同时隙中进行,时隙之间采用一定的保护时间予以分离。所以,TDD模式的小区进行数据传输时需要兼顾TDD上下行时隙的分配,避免出现干扰。因此,可以由TDD小区对应的基站优先确定第一指示信息。当第一小区和第二小区中仅存在一个TDD小区时,可以由TDD小区确定第一指示信息。当第一小区和第二小区均为TDD小区或者FDD小区时,可以由任意一个小区对应的基站确定第一指示信息。
本实施例提供的切换方法,由目标基站确定第一指示信息。目标基站将第一指示信息发送给源基站,从而,源基站可以获取第一指示信息。后续,源基站可以将第一指示信息发送给终端设备。源基站、目标基站和终端设备通过第一指示信息指示的时间进行相应的数据传输,避免了同频干扰,提升了同频切换的通信质量。
在本申请的又一个实施例中,第一指示信息由源基站确定,并由源基站发送给目标基站。从而,目标基站可以获取第一指示信息。请参照图5,其为本申请实施例提供的切换方法的又一种消息交互图。在本实施例中,S301可以包括S502,S302可以包括S501。
如图5所示,本实施例提供的切换方法,可以包括:
S501、源基站向目标基站发送第二消息,所述第二消息包括第一指示信息。
相应的,目标基站接收源基站发送的第二消息。
S502、目标基站向源基站发送第一消息,所述第一消息包括第一指示信息。
相应的,源基站接收目标基站发送的第一消息。
具体的,源基站可以确定第一指示信息。源基站将第一指示信息发送给目标基站,从而,目标基站可以获取第一指示信息。目标基站向源基站发送第一消息,第一消息包括第一指示信息,用于指示目标基站已经获得了第一指示信息。后续,源基站可以将第一指示信息发送给终端设备。这样,源基站、目标基站和终端设备均获取了第一指示信息。源基站、目标基站和终端设备通过第一指示信息指示的时间进行相应的数据传输,避免了同频干扰,提升了同频切换的通信质量。
可选的,第二消息可以为目标基站发送给源基站的RRC消息。例如,第二消息可 以为图2中S204中的切换请求消息(Handover Request)。
可选的,第一消息可以为目标基站发送给源基站的RRC消息。例如,第一消息可以为图2中S206中的切换请求确认消息(Handover Request ACK)。其中,对于切换请求确认消息的说明可以参见图4所示实施例,此处不再赘述。
可选的,在一种实现方式中,第一消息中的第二部分包括所述第一指示信息。所述第二部分为源基站不进行解析的部分。例如,第一消息中的第二部分可以为切换请求确认消息中的信元“目标节点到源节点的透明容器”。
通过在第一消息中的第二部分携带第一指示信息,源基站接收到第一消息后,通过解析第一消息没有获取到第一指示信息,可以隐含确定目标基站获取到了第一指示信息。源基站可以直接将第二部分发送给终端设备,方法简单易行,易于实现。
可选的,在另一种实现方式中,第一消息中的第一部分和第二部分均包括所述第一指示信息。所述第一部分为源基站进行解析的部分。例如,第一消息中的第一部分可以为切换请求确认消息中除信元“目标节点到源节点的透明容器”之外的其他部分。
通过在第一消息中的第一部分和第二部分均携带第一指示信息,源基站接收到第一消息后,可以对第一部分进行解析,从而获取到第一指示信息。源基站可以确定目标基站获取到了第一指示信息。而且,源基站可以直接将第二部分发送给终端设备,方法简单易行,易于实现。
可选的,第一小区为TDD小区,第二小区为TDD小区或者FDD小区。可选的,第一小区为FDD小区,第二小区为FDD小区。
本实施例提供的切换方法,由源基站确定第一指示信息。源基站将第一指示信息发送给目标基站,从而,目标基站可以获取第一指示信息。目标基站再向源基站发送第一指示信息,用于指示目标基站已经获得了第一指示信息。后续,源基站可以将第一指示信息发送给终端设备。源基站、目标基站和终端设备通过第一指示信息指示的时间进行相应的数据传输,避免了同频干扰,提升了同频切换的通信质量。
在本申请的又一个实施例中,源基站可以向目标基站发送自己确定的指示信息。目标基站根据源基站发送的指示信息,最终确定第一指示信息,并将所述第一指示信息发送给源基站。相应的,源基站接收目标基站发送的第一指示信息。请参照图6,其为本申请实施例提供的切换方法的又一种消息交互图。在本实施例中,S301可以包括S602,S302可以包括S601和S602。
如图6所示,本实施例提供的切换方法,可以包括:
S601、源基站向目标基站发送第二消息,所述第二消息包括第二指示信息。
其中,第二指示信息为源基站确定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间。
相应的,目标基站接收源基站发送的第二消息。
S602、目标基站向源基站发送第一消息,所述第一消息包括第一指示信息。
其中,第二指示信息与第一指示信息不同。
相应的,源基站接收目标基站发送的第一消息。
具体的,源基站可以先确定第二指示信息,并将第二指示信息发送给目标基站。 目标基站可以根据源基站确定的第二指示信息,结合其它的条件确定是否采用所述第二指示信息。当目标基站确定不采用所述第二指示信息时,可以确定第一指示信息。目标基站将第一指示信息发送给源基站,从而,源基站可以获取最终确定的第一指示信息。后续,源基站可以将第一指示信息发送给终端设备。这样,源基站、目标基站和终端设备均获取了第一指示信息。源基站、目标基站和终端设备通过第一指示信息指示的时间进行相应的数据传输,避免了同频干扰,提升了同频切换的通信质量。
其中,第一消息可以参见图4所示实施例中的第一消息,原理相似,此处不再赘述。
可选的,第一小区为TDD小区,第二小区为TDD小区或者FDD小区。可选的,第一小区为FDD小区,第二小区为FDD小区。
本实施例提供的切换方法,先由源基站确定第二指示信息,并将第二指示信息发送给目标基站。目标基站根据第二指示信息最终确定第一指示信息,并将第一指示信息发送给源基站,从而,源基站可以获取第一指示信息。后续,源基站可以将第一指示信息发送给终端设备。源基站、目标基站和终端设备通过第一指示信息指示的时间进行相应的数据传输,避免了同频干扰,提升了同频切换的通信质量。
下面,通过实施例对本申请中的指示信息进行说明。指示信息可以为第一指示信息或第二指示信息。
可选的,在一种实现方式中,指示信息可以包括索引值。索引值与终端设备从第一小区切换到第二小区时分别通过源基站和目标基站传输数据的时间存在对应关系。
在该种实现方式中,源基站和目标基站可以预先存储索引值与终端设备从第一小区切换到第二小区时分别通过源基站和目标基站传输数据的时间之间的对应关系。通过指示信息中包括的索引值,查找该对应关系,从而确定终端设备分别与源基站和目标基站传输数据的时间。
下面通过示例进行说明。请参照表1,表1示出了索引值与传输数据时间之间的对应关系。在表1中,索引值包括4个,取值分别为1~4。每个索引值对应一种传输时间。
例如,第一指示信息包括索引值2。可以确定,源基站和目标基站约定以40ms为周期。其中,前20ms用于终端设备与源基站传输数据。隐含确定,后20ms用于终端设备与目标基站传输数据。
需要说明的是,表1所示示例仅是举例说明,并不对第一指示信息、索引值以及索引值与传输数据的时间的对应关系进行限定。
表1
索引值 | 传输数据的时间 |
1 | 以40ms为周期,前20ms用于终端设备与源基站传输数据 |
2 | 以40ms为周期,前20ms用于终端设备与目标基站传输数据 |
3 | 以***帧为分割线,偶数帧号用于终端设备与源基站传输数据 |
4 | 以***帧为分割线,偶数帧号用于终端设备与目标基站传输数据 |
可选的,在另一种实现方式中,指示信息可以包括第一数值。第一数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过源基站传输数据的时间。
举例说明。假设,预设周期为40ms,即,目标基站与源基站约定以40ms为周期。第一指示信息包括第一数值16。第一数值16可以指示:在40ms中,前16ms用于终端设备与源基站传输数据。
需要说明的是,本实施例对于第一数值的具体取值、预设周期的具体取值以及第一数值指示的通过源基站传输数据的时间在预设周期中的位置不做限定。
可选的,在又一种实现方式中,指示信息可以包括第二数值。第二数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过目标基站传输数据的时间。
举例说明。假设,预设周期为40ms,即,目标基站与源基站约定以40ms为周期。第一指示信息包括第二数值20。第二数值20可以指示:在40ms中,后20ms用于终端设备与目标基站传输数据。
需要说明的是,本实施例对于第二数值的具体取值、预设周期的具体取值以及第二数值指示的通过目标基站传输数据的时间在预设周期中的位置不做限定。
可选的,在又一种实现方式中,指示信息可以包括N个指示域,N为大于1的整数。每个指示域对应预设周期中的一个单位时间,指示域用于指示终端设备从第一小区切换到第二小区时在指示域对应的单位时间内通过源基站或者目标基站传输数据。
举例说明。假设,预设周期为10ms,N等于10,即,目标基站与源基站约定以10ms为周期。假设,第一指示信息包括10个指示域,取值为1111110000,可以指示:在10ms中,前6ms用于终端设备与源基站传输数据,后4ms用于终端设备与目标基站传输数据。
需要说明的是,本实施例对于N的具体取值、预设周期的具体取值以及每个指示域的具体取值不做限定。
可选的,指示信息还可以指示传输数据的时间是否已经根据源基站与目标基站之间的***时间差值进行过调整。
具体的,在异步场景中,源基站的第一小区与目标基站的第二小区的***时间不同,存在***时间差值。通过指示信息,还可以指示出终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间是否已经参考了所述***时间差值。从而,源基站、目标基站和终端设备可以确定是否还需要根据所述***时间差值调整传输数据的时间,提升了确定传输时间的准确性。
可选的,指示信息可以包括第一标识信息,根据所述第一标识信息的取值可以指示传输数据的时间是否已经根据源基站与目标基站之间的***时间差值进行过调整。
本实施例对于第一标识信息占用的比特数以及第一标识信息的取值不做限定。例如,第一标识信息为1bit。第一标识信息为1时,指示传输数据的时间已经根据源基站与目标基站之间的***时间差值进行过调整。又例如,第一标识信息为0时,指示传输数据的时间已经根据源基站与目标基站之间的***时间差值进行过调整。
可选的,指示信息还可以指示传输数据的时间是基于源基站的***时间或者是基于目标基站的***时间。
具体的,在异步场景中,源基站的第一小区与目标基站的第二小区的***时间不同。通过指示信息,还可以指示出终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间是基于源基站的***时间还是基于目标基站的***时间。从而,源基站、目标基站和终端设备可以根据源基站的***时间或者目标基站的***时间确定传输数据的时间,提升了确定传输时间的准确性。
可选的,指示信息可以包括第二标识信息,根据所述第二标识信息的取值可以指示传输数据的时间是基于源基站的***时间或者是基于目标基站的***时间。
本实施例对于第二标识信息占用的比特数以及第二标识信息的取值不做限定。例如,第一标识信息为2bit。第二标识信息为11时,指示传输数据的时间基于源基站的***时间。又例如,第一标识信息为10时,指示传输数据的时间基于目标基站的***时间。
图7为本申请实施例提供的源基站的结构示意图。本实施例提供的源基站,用于执行本申请任意方法实施例提供的切换方法中源基站执行的操作。技术原理和技术效果相似,此处不再赘述。如图7所示,本实施例提供的源基站,可以包括:
获取模块71,用于获取第一指示信息;第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间;第一小区与第二小区为同频邻区;
发送模块72,用于向终端设备发送第一指示信息。
可选的,获取模块71具体用于:接收目标基站发送的第一指示信息。
可选的,获取模块71具体用于:接收目标基站发送的第一消息,第一消息包括第一指示信息。
可选的,发送模块72还用于:向目标基站发送第二消息,第二消息包括第一指示信息。
可选的,发送模块72还用于:源基站向目标基站发送第二消息,第二消息包括第二指示信息,第二指示信息为源基站确定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间,第二指示信息与第一指示信息不同。
可选的,第一指示信息还指示传输数据的时间是否已经根据源基站与目标基站之间的***时间差值进行过调整。
可选的,第一指示信息还指示传输数据的时间是基于源基站的***时间或者是基于目标基站的***时间。
可选的,第一指示信息包括下列中的至少一个:
索引值;索引值与终端设备从第一小区切换到第二小区时分别通过源基站和目标基站传输数据的时间存在对应关系;
第一数值;第一数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过源基站传输数据的时间;
第二数值;第二数值用于指示终端设备从第一小区切换到第二小区时在预设周期 中通过目标基站传输数据的时间;
N个指示域,N为大于1的整数;每个指示域对应预设周期中的一个单位时间,指示域用于指示终端设备从第一小区切换到第二小区时在指示域对应的单位时间内通过源基站或者目标基站传输数据。
图8为本申请实施例提供的目标基站的结构示意图。本实施例提供的目标基站,用于执行本申请任意方法实施例提供的切换方法中目标基站执行的操作。技术原理和技术效果相似,此处不再赘述。如图8所示,本实施例提供的目标基站,可以包括:
获取模块81,用于获取第一指示信息;第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间;第一小区与第二小区为同频邻区。
可选的,还包括发送模块82,发送模块82用于:向源基站发送第一指示信息。
可选的,发送模块82具体用于:向源基站发送第一消息,第一消息包括第一指示信息。
可选的,获取模块81具体用于:接收源基站发送的第二消息,第二消息包括第一指示信息。
可选的,还包括接收模块83,接收模块83用于:接收源基站发送的第二消息,第二消息包括第二指示信息,第二指示信息为源基站确定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间,第二指示信息与第一指示信息不同。
可选的,第一指示信息还指示传输数据的时间是否已经根据源基站与目标基站之间的***时间差值进行过调整。
可选的,第一指示信息还指示传输数据的时间是基于源基站的***时间或者是基于目标基站的***时间。
可选的,第一指示信息包括下列中的至少一个:
索引值;索引值与终端设备从第一小区切换到第二小区时分别通过源基站和目标基站传输数据的时间存在对应关系;
第一数值;第一数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过源基站传输数据的时间;
第二数值;第二数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过目标基站传输数据的时间;
N个指示域,N为大于1的整数;每个指示域对应预设周期中的一个单位时间,指示域用于指示终端设备从第一小区切换到第二小区时在指示域对应的单位时间内通过源基站或者目标基站传输数据。
图9为本申请实施例提供的终端设备的结构示意图。本实施例提供的终端设备,用于执行本申请任意方法实施例提供的切换方法中终端设备执行的操作。技术原理和技术效果相似,此处不再赘述。如图9所示,本实施例提供的终端设备,可以包括:
接收模块91,用于接收源基站发送的第一指示信息;第一指示信息指示终端设备 从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间;第一小区与第二小区为同频邻区;
处理模块92,用于根据第一指示信息分别与源基站和目标基站传输数据。
可选的,第一指示信息还指示传输数据的时间是否已经根据源基站与目标基站之间的***时间差值进行过调整。
可选的,第一指示信息还指示传输数据的时间是基于源基站的***时间或者是基于目标基站的***时间。
应理解,以上模块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。且装置中的模块可以全部以软件通过处理元件调用的形式实现,也可以全部以硬件的形式实现,还可以部分模块以软件通过处理元件调用的形式实现,部分模块以硬件的形式实现。例如,各个模块可以为单独设立的处理元件,也可以集成在装置的某一个芯片中实现,此外,也可以以程序的形式存储于存储器中,由装置的某一个处理元件调用并执行该模块的功能。此外这些模块全部或部分可以集成在一起,也可以独立实现。这里所述的处理元件又可以成为处理器,可以是一种具有信号的处理能力的集成电路。在实现过程中,上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路实现或者以软件通过处理元件调用的形式实现。
在一个例子中,以上装置中的模块可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(application specific integrated circuit,ASIC),或,一个或多个数据信号处理器(digital singnal processor,DSP),或,一个或者多个现场可编程门阵列(field programmable gate array,FPGA),或这些集成电路形式中至少两种的组合。再如,当以上装置中的模块可以通过处理元件调度程序的形式实现时,该处理元件可以是通用处理器,例如CPU或其它可以调用程序的处理器。再如,这些模块可以集成在一起,以片上***(system-on-a-chip,SOC)的形式实现。
在一个例子中,以上用于接收或发送的模块可以是以上装置的接口电路,用于与其它设备传输信号。
图10为本申请实施例提供的通信设备的结构示意图。所述通信设备可以为源基站、目标基站或者终端设备。如图10所示,本实施例提供的通信设备,可以包括:处理器1001、存储器1002和收发器1003。其中,收发器1003用于和其他设备通信。存储器1002用于存储指令。处理器1001用于执行存储器1002中存储的指令,以使所述通信设备执行本申请任意实施例提供的切换方法中源基站、目标基站或者终端设备执行的操作,具体实现方式和技术效果类似,这里不再赘述。
应理解,处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直 接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。
在本申请实施例中,存储器可以是非易失性存储器,比如硬盘(hard disk drive,HDD)或固态硬盘(solid-state drive,SSD)等,还可以是易失性存储器(volatile memory),例如随机存取存储器(random access memory,RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何介质,但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置,用于存储程序指令和/或数据。
本申请实施例还提供一种用于切换的***,包括前述实施例中的源基站和目标基站。
源基站和目标基站,用于获取第一指示信息;第一指示信息指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间;第一小区与第二小区为同频邻区;
源基站还用于,向终端设备发送第一指示信息。
可选的,源基站具体用于:源基站接收目标基站发送的第一指示信息。
可选的,源基站具体用于:源基站接收目标基站发送的第一消息,第一消息包括第一指示信息。
可选的,源基站还用于:源基站向目标基站发送第二消息,第二消息包括第一指示信息。
可选的,源基站还用于:源基站向目标基站发送第二消息,第二消息包括第二指示信息,第二指示信息为源基站确定的指示终端设备从源基站的第一小区切换到目标基站的第二小区时,终端设备分别与源基站和目标基站传输数据的时间,第二指示信息与第一指示信息不同。
可选的,目标基站具体用于:目标基站接收源基站发送的第二消息,第二消息包括第一指示信息。
可选的,第一指示信息还指示传输数据的时间是否已经根据源基站与目标基站之间的***时间差值进行过调整。
可选的,第一指示信息还指示传输数据的时间是基于源基站的***时间或者是基于目标基站的***时间。
可选的,第一指示信息包括下列中的至少一个:
索引值;索引值与终端设备从第一小区切换到第二小区时分别通过源基站和目标基站传输数据的时间存在对应关系;
第一数值;第一数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过源基站传输数据的时间;
第二数值;第二数值用于指示终端设备从第一小区切换到第二小区时在预设周期中通过目标基站传输数据的时间;
N个指示域,N为大于1的整数;每个指示域对应预设周期中的一个单位时间,指示域用于指示终端设备从第一小区切换到第二小区时在指示域对应的单位时间内通过源基站或者目标基站传输数据。
本实施例提供的用于切换的***,包括的源基站用于执行本申请任意方法实施例提供的切换方法中源基站执行的操作,包括的目标基站用于执行本申请任意方法实施例提供的切换方法中目标基站执行的操作,技术原理和技术效果相似,此处不再赘述。
需要说明的是,本实施例对于源基站和目标基站的名称不作限定,在不同的通信***中可以有所不同。
Claims (27)
- 一种切换方法,其特征在于,包括:源基站和目标基站获取第一指示信息;所述第一指示信息指示终端设备从所述源基站的第一小区切换到所述目标基站的第二小区时,所述终端设备分别与所述源基站和所述目标基站传输数据的时间;所述第一小区与所述第二小区为同频邻区;所述源基站向所述终端设备发送所述第一指示信息。
- 根据权利要求1所述的方法,其特征在于,所述源基站获取第一指示信息,包括:所述源基站接收所述目标基站发送的所述第一指示信息。
- 根据权利要求2所述的方法,其特征在于,所述源基站接收所述目标基站发送的所述第一指示信息,包括:所述源基站接收所述目标基站发送的第一消息,所述第一消息包括所述第一指示信息。
- 根据权利要求3所述的方法,其特征在于,所述源基站接收所述目标基站发送的第一消息之前,还包括:所述源基站向所述目标基站发送第二消息,所述第二消息包括所述第一指示信息。
- 根据权利要求3所述的方法,其特征在于,所述源基站接收所述目标基站发送的第一消息之前,还包括:所述源基站向所述目标基站发送第二消息,所述第二消息包括第二指示信息,所述第二指示信息为所述源基站确定的指示所述终端设备从所述源基站的所述第一小区切换到所述目标基站的所述第二小区时,所述终端设备分别与所述源基站和所述目标基站传输数据的时间,所述第二指示信息与所述第一指示信息不同。
- 根据权利要求1所述的方法,其特征在于,所述目标基站获取第一指示信息,包括:所述目标基站接收所述源基站发送的第二消息,所述第二消息包括所述第一指示信息。
- 根据权利要求1-6任一项所述的方法,其特征在于,所述第一指示信息还指示所述传输数据的时间是否已经根据所述源基站与所述目标基站之间的***时间差值进行过调整。
- 根据权利要求1-6任一项所述的方法,其特征在于,所述第一指示信息还指示所述传输数据的时间是基于所述源基站的***时间或者是基于所述目标基站的***时间。
- 根据权利要求1-6任一项所述的方法,其特征在于,所述第一指示信息包括下列中的至少一个:索引值;所述索引值与所述终端设备从所述第一小区切换到所述第二小区时分别通过所述源基站和所述目标基站传输数据的时间存在对应关系;第一数值;所述第一数值用于指示所述终端设备从所述第一小区切换到所述第二小区时在预设周期中通过所述源基站传输数据的时间;第二数值;所述第二数值用于指示所述终端设备从所述第一小区切换到所述第二小区时在预设周期中通过所述目标基站传输数据的时间;N个指示域,N为大于1的整数;每个指示域对应预设周期中的一个单位时间,所述指示域用于指示所述终端设备从所述第一小区切换到所述第二小区时在所述指示域对应的单位时间内通过所述源基站或者所述目标基站传输数据。
- 一种切换方法,其特征在于,包括:终端设备接收源基站发送的第一指示信息;所述第一指示信息指示所述终端设备从所述源基站的第一小区切换到目标基站的第二小区时,所述终端设备分别与所述源基站和所述目标基站传输数据的时间;所述第一小区与所述第二小区为同频邻区;所述终端设备根据所述第一指示信息分别与所述源基站和所述目标基站传输数据。
- 根据权利要求10所述的方法,其特征在于,所述第一指示信息还指示所述传输数据的时间是否已经根据所述源基站与所述目标基站之间的***时间差值进行过调整。
- 根据权利要求10或11所述的方法,其特征在于,所述第一指示信息还指示所述传输数据的时间是基于所述源基站的***时间或者是基于所述目标基站的***时间。
- 一种用于切换的***,其特征在于,包括:源基站和目标基站;所述源基站和所述目标基站,用于获取第一指示信息;所述第一指示信息指示终端设备从所述源基站的第一小区切换到所述目标基站的第二小区时,所述终端设备分别与所述源基站和所述目标基站传输数据的时间;所述第一小区与所述第二小区为同频邻区;所述源基站还用于,向所述终端设备发送所述第一指示信息。
- 根据权利要求13所述的***,其特征在于,所述源基站具体用于:所述源基站接收所述目标基站发送的所述第一指示信息。
- 根据权利要求14所述的***,其特征在于,所述源基站具体用于:所述源基站接收所述目标基站发送的第一消息,所述第一消息包括所述第一指示信息。
- 根据权利要求15所述的***,其特征在于,所述源基站还用于:所述源基站向所述目标基站发送第二消息,所述第二消息包括所述第一指示信息。
- 根据权利要求15所述的***,其特征在于,所述源基站还用于:所述源基站向所述目标基站发送第二消息,所述第二消息包括第二指示信息,所述第二指示信息为所述源基站确定的指示所述终端设备从所述源基站的所述第一小区切换到所述目标基站的所述第二小区时,所述终端设备分别与所述源基站和所述目标基站传输数据的时间,所述第二指示信息与所述第一指示信息不同。
- 根据权利要求13所述的***,其特征在于,所述目标基站具体用于:所述目标基站接收所述源基站发送的第二消息,所述第二消息包括所述第一指示信息。
- 根据权利要求13-18任一项所述的***,其特征在于,所述第一指示信息还指示所述传输数据的时间是否已经根据所述源基站与所述目标基站之间的***时间差 值进行过调整。
- 根据权利要求13-18任一项所述的***,其特征在于,所述第一指示信息还指示所述传输数据的时间是基于所述源基站的***时间或者是基于所述目标基站的***时间。
- 根据权利要求13-18任一项所述的***,其特征在于,所述第一指示信息包括下列中的至少一个:索引值;所述索引值与所述终端设备从所述第一小区切换到所述第二小区时分别通过所述源基站和所述目标基站传输数据的时间存在对应关系;第一数值;所述第一数值用于指示所述终端设备从所述第一小区切换到所述第二小区时在预设周期中通过所述源基站传输数据的时间;第二数值;所述第二数值用于指示所述终端设备从所述第一小区切换到所述第二小区时在预设周期中通过所述目标基站传输数据的时间;N个指示域,N为大于1的整数;每个指示域对应预设周期中的一个单位时间,所述指示域用于指示所述终端设备从所述第一小区切换到所述第二小区时在所述指示域对应的单位时间内通过所述源基站或者所述目标基站传输数据。
- 一种终端设备,其特征在于,包括:接收模块,用于接收源基站发送的第一指示信息;所述第一指示信息指示所述终端设备从所述源基站的第一小区切换到目标基站的第二小区时,所述终端设备分别与所述源基站和所述目标基站传输数据的时间;所述第一小区与所述第二小区为同频邻区;处理模块,用于根据所述第一指示信息分别与所述源基站和所述目标基站传输数据。
- 根据权利要求22所述的终端设备,其特征在于,所述第一指示信息还指示所述传输数据的时间是否已经根据所述源基站与所述目标基站之间的***时间差值进行过调整。
- 根据权利要求22或23所述的终端设备,其特征在于,所述第一指示信息还指示所述传输数据的时间是基于所述源基站的***时间或者是基于所述目标基站的***时间。
- 一种通信设备,其特征在于,所述通信设备包括处理器、存储器和收发器;所述收发器用于与其他设备通信;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中存储的指令,以使所述通信设备执行如权利要求1至12任一项所述的切换方法。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有指令,当所述指令在计算机或处理器上运行时,实现如权利要求1至12任一项所述的切换方法。
- 一种计算机程序产品,其特征在于,所述计算机程序产品包含指令,当所述指令在计算机或处理器上运行时,使得所述计算机或所述处理器执行如权利要求1至12任一项所述的切换方法。
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