CN114916026A

CN114916026A - Cell switching method and device and terminal equipment

Info

Publication number: CN114916026A
Application number: CN202210752504.3A
Authority: CN
Inventors: 张昊天
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-08-16
Anticipated expiration: 2042-06-29
Also published as: CN114916026B

Abstract

The application discloses a cell switching method, a cell switching device and terminal equipment, and relates to the technical field of communication; the method comprises the following steps: receiving a plurality of condition switching configuration information if a first condition is satisfied; before the second condition is met, performing comprehensive measurement on an adjacent cell corresponding to each of the plurality of pieces of conditional handover configuration information to determine a target adjacent cell; determining a cell switching strategy according to the moving speed state and the channel quality state, wherein the cell switching strategy is one of the following items: and continuing to perform comprehensive measurement on the channel quality of the target adjacent cell before the second condition is met, ending the comprehensive measurement before the second condition is met and switching from the serving cell to the target adjacent cell, and ending the comprehensive measurement after the second condition is met and switching from the serving cell to the target adjacent cell, so that the accuracy of cell switching decision is improved in the cell switching process, and the finally decided target adjacent cell can be more favorable for ensuring the subsequent communication quality of the terminal equipment.

Description

Cell switching method and device and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cell switching method and apparatus, and a terminal device.

Background

The standard protocol specified by the third Generation Partnership Project organization (3rd Generation Partnership Project, 3GPP) introduces a Conditional Handover (CHO) mechanism. In the CHO mechanism, the network may send CHO configuration (CHO configuration) information to some neighboring cells of the serving cell where the terminal device is located, where the CHO configuration information may include information required for configuring the terminal device to switch from the serving cell to its corresponding neighboring cell.

When the channel quality of a neighboring cell (i.e., a target neighboring cell) corresponding to a certain piece of CHO configuration information satisfies a condition, the terminal device will immediately switch from the serving cell to the target neighboring cell, and delete the CHO configuration information of other neighboring cells. It can be seen that in the CHO scheme, the terminal device may immediately handover to the target neighbor cell if the conditions are met. Although the channel quality of the target neighboring cell meets the condition, there may be a case that the target neighboring cell does not necessarily guarantee the subsequent communication quality of the terminal device, or the target neighboring cell is not the best neighboring cell in terms of guaranteeing the subsequent communication quality of the terminal device, so that the cell handover decision for immediate handover may bring certain disadvantages.

Therefore, how to improve the accuracy of cell handover decision making so that the finally decided target neighboring cell can be more beneficial to ensuring the subsequent communication quality of the terminal equipment needs further research.

Disclosure of Invention

The application provides a cell switching method and device and terminal equipment, aiming at solving the problem how to improve the accuracy of cell switching decision in the cell switching process so that the finally decided target adjacent cell can be more favorable for ensuring the subsequent communication quality of the terminal equipment.

In a first aspect, a cell handover method according to the present application includes:

receiving a plurality of conditional handover configuration information under the condition that a first condition is met, wherein the first condition is a first event for triggering a terminal device to report a measurement report, the first event is that the channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for a network to configure the plurality of conditional handover configuration information, the conditional handover configuration information includes information required for configuring the terminal device to switch from the serving cell to an adjacent cell, and each of the plurality of conditional handover configuration information corresponds to an adjacent cell;

before a second condition is met, performing comprehensive measurement on one adjacent cell corresponding to each of the plurality of pieces of conditional handover configuration information to determine a target adjacent cell, where the second condition is a second event for triggering the terminal device to end the comprehensive measurement and handover out of the serving cell, the second event is that the channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold;

determining a cell switching strategy according to the moving speed state and the channel quality state, wherein the cell switching strategy is one of the following items: continuing the integrated measurement of the channel quality of the target neighbor cell before the second condition is satisfied, ending the integrated measurement and switching from the serving cell to the target neighbor cell after the second condition is satisfied, the moving fast and slow state representing a moving fast and slow situation of the terminal device in the serving cell before the second condition is satisfied, and the channel quality state representing a channel quality change situation of the serving cell before the second condition is satisfied.

As can be seen, in the present application, under the condition that the first condition is satisfied, the network is configured with the multiple neighboring cells of the serving cell and the condition switching configuration information corresponding to each of the neighboring cells, that is, the multiple condition switching configuration information, through the measurement report; in order to avoid always performing comprehensive measurement, a second condition is introduced, so that only one adjacent cell corresponding to each of the plurality of condition switching configuration information needs to be comprehensively measured before the second condition is met to determine a target adjacent cell, and the accuracy of measuring the adjacent cells is improved through comprehensive measurement, so that the finally decided target adjacent cell can be more favorable for ensuring the subsequent communication quality of the terminal equipment; by introducing the moving speed state and the channel quality state, various different cell switching strategies can be determined according to the moving speed state and the channel quality state, and the cell switching strategy can indicate whether the comprehensive measurement is continued before the second condition is met, whether the comprehensive measurement is ended in advance to perform switching or the comprehensive measurement is not ended in advance to perform switching, so that the flexibility of cell switching is improved. If the cell switching strategy is to continue to carry out comprehensive measurement on the channel quality of the target adjacent cell, the measurement accuracy is further improved through the comprehensive measurement; if the cell switching strategy is to finish the comprehensive measurement before the second condition is met and switch from the serving cell to the target adjacent cell, the cell switching is executed in advance to improve the switching efficiency; and if the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell after the second condition is met, cell switching is realized.

In a second aspect, a cell switching apparatus of the present application includes:

a receiving unit, configured to receive multiple pieces of conditional handover configuration information when a first condition is satisfied, where the first condition is a first event used to trigger a terminal device to report a measurement report, the first event is that channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for a network to configure multiple pieces of the conditional handover configuration information, the conditional handover configuration information includes information required to configure the terminal device to switch from the serving cell to an adjacent cell, and each of the multiple pieces of conditional handover configuration information corresponds to one adjacent cell;

a measuring unit, configured to perform comprehensive measurement on one neighboring cell corresponding to each of the multiple pieces of conditional handover configuration information before a second condition is met, to determine a target neighboring cell, where the second condition is a second event for triggering the terminal device to end the comprehensive measurement and handover out of the serving cell, where the second event is that channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold;

a determining unit, configured to determine a cell switching policy according to the moving speed state and the channel quality state, where the cell switching policy is one of the following: continuing the comprehensive measurement of the channel quality of the target neighboring cell before the second condition is satisfied, ending the comprehensive measurement and switching from the serving cell to the target neighboring cell after the second condition is satisfied, wherein the moving speed state represents a moving speed condition that the terminal device is in the serving cell before the second condition is satisfied, and the channel quality state represents a channel quality change condition of the serving cell before the second condition is satisfied.

In a third aspect, the steps in the method according to the first aspect are applied to a terminal device or a terminal device.

A fourth aspect is a terminal device of the present application, which includes a processor, a memory, and a computer program or instructions stored in the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the first aspect.

A fifth aspect is a chip of the present application, which includes a processor, wherein the processor performs the steps in the method designed in the first aspect or the second aspect.

A sixth aspect is a chip module according to the present application, which includes a transceiver component and a chip, where the chip includes a processor, and the processor executes the steps in the method according to the first aspect or the second aspect.

A seventh aspect is a computer-readable storage medium of the present application, wherein a computer program or instructions is stored, which when executed, implements the steps of the method as designed by the first or second aspect.

An eighth aspect is a computer program product of the present application, comprising computer programs or instructions, wherein the computer programs or instructions, when executed, implement the steps in the method as designed in the first or second aspect.

A ninth aspect is a communication system of the present application, including the terminal device in the seventh aspect and the network device in the eighth aspect.

The beneficial effects brought by the technical solutions of the second aspect to the ninth aspect may refer to the technical effects brought by the technical solutions of the first aspect, and are not described herein again.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly described below.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a cell switching method according to an embodiment of the present application;

fig. 3 is a block diagram of functional units of a cell switching apparatus according to an embodiment of the present application;

fig. 4 is a block diagram of functional units of another cell handover apparatus according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

It should be understood that the terms "first", "second", and the like, referred to in the embodiments of the present application, are used for distinguishing different objects, and are not used for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, software, product, or apparatus that comprises a list of steps or elements is not limited to those listed but may include other steps or elements not listed or inherent to such process, method, product, or apparatus.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The "and/or" in the embodiment of the present application describes an association relationship of the association object, and indicates that three relationships may exist. For example, a and/or B, may represent the following three cases: a is present alone; both A and B are present; b is present alone. A, B may be singular or plural.

In the embodiment of the present application, the symbol "/" may indicate that the former and latter associated objects are in an "or" relationship. In addition, the symbol "/" may also indicate a division number, i.e. perform a division operation. For example, A/B, may represent A divided by B.

In the embodiments of the present application, "at least one item" or the like means any combination of these items, including a single item(s) or any combination of plural items(s), means one or more, and means two or more. For example, at least one (one) of a, b, or c may represent seven cases as follows: a, b, c, a and b, a and c, b and c, a, b and c. Each of a, b, and c may be an element or a set including one or more elements.

The term "equal to" in the embodiments of the present application may be used with greater than or equal to, or may be used with less than or equal to, or may be used with more than or equal to, or may be used with less than or equal to, or may be used with more than or equal to, the technical scheme used with less than or equal to. When the ratio is equal to or greater than the ratio for use, the ratio is not less than the ratio for use; when the ratio is equal to or less than the combined ratio, the ratio is not greater than the combined ratio.

In the embodiments of the present application, "of", "corresponding", "indicated" may be sometimes used in combination. It should be noted that the intended meaning is consistent when differences are not emphasized.

The term "connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in any way.

In the embodiments of the present application, "network" may be expressed as the same concept as "system", and a communication system is a communication network.

The following describes relevant matters, concepts, meanings, technical problems, technical solutions, advantageous effects, and the like, which are referred to in the embodiments of the present application.

Communication system, terminal equipment and network equipment

1. Communication system

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: general Packet Radio Service (GPRS), Long Term Evolution (LTE) System, Advanced Long Term Evolution (LTE-a) System, New Radio (NR) System, Evolution System of NR System, LTE (LTE-based Access to Unlicensed Spectrum, LTE-U) System on Unlicensed Spectrum, NR (NR-based Access to Unlicensed Spectrum, NR-U) System on Unlicensed Spectrum, Non-Terrestrial communication network (NTN) System, Universal Mobile communication System (Wireless Mobile communication, UMTS), Wireless Local Area network (Local Area network, network), Wireless Fidelity (Wireless Fidelity, Fidelity), Wireless 6th Generation System (WLAN 6G 6) or other communication systems.

It should be noted that the conventional communication system has a limited number of supported connections and is easy to implement. However, with the development of communication technology, the communication system may support not only a conventional communication system, but also a device to device (D2D) communication, a machine to machine (M2M) communication, a Machine Type Communication (MTC), a vehicle to vehicle (V2V) communication, a vehicle to internet (V2X) communication, a narrowband internet of things (NB-IoT) communication, etc., so that the technical solution of the embodiments of the present application may also be applied to the above communication system.

In addition, the technical solution of the embodiment of the present application may be applied to beamforming (beamforming), Carrier Aggregation (CA), Dual Connectivity (DC), or independent (SA) deployment scenarios.

In this embodiment, a frequency spectrum used for communication between the terminal device and the network device, or a frequency spectrum used for communication between the terminal device and the terminal device may be an authorized frequency spectrum or an unauthorized frequency spectrum, which is not limited herein. In addition, the unlicensed spectrum may be understood as a shared spectrum, and the licensed spectrum may be understood as an unshared spectrum.

Since the embodiments of the present application are described in conjunction with a terminal device and a network device, the terminal device and the network device will be described in detail below.

2. Terminal device

In this embodiment, the terminal device may be a device having a transceiving function, which may also be referred to as a terminal, a User Equipment (UE), a remote terminal device (remote UE), a relay device (relay UE), an access terminal device, a subscriber unit, a subscriber station, a mobile station, a remote station, a mobile device, a user terminal device, an intelligent terminal device, a wireless communication device, a user agent, or a user equipment. It should be noted that the relay device is a terminal device capable of providing a relay forwarding service for other terminal devices (including a remote terminal device).

In some possible implementations, the terminal device may be deployed on land, including indoors or outdoors, hand-held, worn, or vehicle-mounted; can be deployed on the water surface (such as a ship and the like); may be deployed in the air (e.g., aircraft, balloons, satellites, etc.).

In some possible implementations, the terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned autonomous driving, a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), etc.

In addition, the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next generation communication system (e.g., NR communication system, 6G communication system), or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which are not particularly limited.

In some possible implementations, the terminal device may include means for wireless communication functionality, such as a system-on-chip, a chip module. For example, the chip system may include a chip and may also include other discrete devices.

3. Network device

In this embodiment, the network device may be a device with a transceiving function, and is used for communicating with the terminal device. For example, the network device may be responsible for Radio Resource Management (RRM), quality of service (QoS) management, data compression and encryption, data transceiving, and the like on the air interface side. The network device may be a Base Station (BS) in a communication system or a device deployed in a Radio Access Network (RAN) and used for providing a wireless communication function. For example, an evolved node B (eNB or eNodeB) in the LTE communication system, a next evolved node B (ng-eNB) in the NR communication system, a next evolved node B (gNB) in the NR communication system, a Master Node (MN) in the dual connectivity architecture, a second node or a Secondary Node (SN) in the dual connectivity architecture, and the like, which are not particularly limited.

In some possible implementations, the network device may also be a device in a Core Network (CN), such as an access and mobility management function (AMF), a User Plane Function (UPF), and the like; but also Access Points (APs) in WLANs, relay stations, communication devices in PLMN networks for future evolution, communication devices in NTN networks, etc.

In some possible implementations, the network device may include an apparatus, such as a system-on-chip, a chip module, having a function of providing wireless communication for the terminal device. The chip system may include a chip, or may include other discrete devices, as examples.

In some possible implementations, the network device may communicate with an Internet Protocol (IP) network. Such as the internet (internet), a private IP network, or other data network, etc.

In some possible implementations, the network device may be a single node to implement the functionality of the base station or the network device may include two or more separate nodes to implement the functionality of the base station. For example, network devices include Centralized Units (CUs) and Distributed Units (DUs), such as gNB-CUs and gNB-DUs. Further, in other embodiments of the present application, the network device may further include an Active Antenna Unit (AAU). The CU realizes one part of functions of the network equipment, and the DU realizes the other part of functions of the network equipment. For example, the CU is responsible for processing non-real-time protocols and services, and implements functions of a Radio Resource Control (RRC) layer, a Service Data Adaptation (SDAP) layer, and a Packet Data Convergence (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. In addition, the AAU may implement portions of physical layer processing functions, radio frequency processing, and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, in the network deployment, the higher layer signaling (e.g., RRC signaling) may be considered to be sent by the DU or jointly sent by the DU and the AAU. It is to be understood that the network device may comprise at least one of a CU, a DU, an AAU. In addition, the CU may be divided into network devices in the RAN, or the CU may be divided into network devices in the core network, which is not particularly limited.

In some possible implementations, the network device may be any one of multiple stations performing coherent cooperative transmission with the terminal device, or another station outside the multiple stations, or another network device performing network communication with the terminal device, which is not particularly limited. The multi-site coherent joint transmission may be a joint coherent transmission of multiple sites, or different data belonging to the same Physical Downlink Shared Channel (PDSCH) are sent from different sites to the terminal device, or multiple sites are virtualized to be a site for transmission, and names with the same meaning specified in other standards are also applicable to the present application, that is, the present application does not limit names of these parameters. The station in the multi-station coherent joint transmission may be a Remote Radio Head (RRH), a Transmission and Reception Point (TRP), a network device, and the like, which is not limited specifically.

In some possible implementations, the network device may be any one of multiple stations performing non-coherent cooperative transmission with the terminal device, or another station outside the multiple stations, or another network device performing network communication with the terminal device, which is not particularly limited. The multi-site non-coherent joint transmission may be a multi-site joint non-coherent transmission, or different data belonging to the same PDSCH may be sent to the terminal device from different sites, and names with the same meaning specified in other standards are also applicable to the present application, that is, the names of these parameters are not limited in the present application. The station in the multi-station non-coherent joint transmission may be an RRH, a TRP, a network device, or the like, which is not particularly limited.

In some possible implementations, the network device may have mobile characteristics, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a geosynchronous orbit (GEO) satellite, a High Elliptic Orbit (HEO) satellite, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.

In some possible implementations, a network device may serve a cell, and terminal devices in the cell may communicate with the network device via transmission resources (e.g., spectrum resources). The cell may be a macro cell (macro cell), a small cell (small cell), a metro cell (metro cell), a micro cell (micro cell), a pico cell (pico cell), a femto cell (femto cell), or the like.

4. Description of the examples

An exemplary description of the communication system according to the embodiments of the present application is provided below.

For example, a network architecture of a communication system according to an embodiment of the present application may refer to fig. 1. As shown in fig. 1, communication system 10 may include a network device 110 and a terminal device 120. Terminal device 120 may communicate with network device 110 in a wireless manner.

Fig. 1 is merely an illustration of a network architecture of a communication system, and the network architecture of the communication system according to the embodiment of the present application is not limited thereto. For example, in the embodiment of the present application, a server or other devices may also be included in the communication system. For another example, in the embodiment of the present application, the communication system may include multiple network devices and/or multiple terminal devices.

Second, Conditional Handover (CHO) mechanism

In a communication system, after a terminal device accesses a serving cell, a network device may determine some neighboring cells of the serving cell when a certain condition is satisfied, and configure, to the terminal device, CHO configuration information corresponding to each of the neighboring cells through a Radio Resource Control (RRC) message, where the CHO configuration information may include information required to configure the terminal device to switch from the serving cell to the corresponding neighboring cell, and may associate, to the CHO configuration information, a Measurement identifier (Measurement ID) corresponding to the CHO configuration information, where the Measurement ID may associate a Measurement Object (MO) and a Measurement Report (Measurement Report, MR), where the Measurement ID may indicate contents such as an MO of the neighboring cell and an ID of the cell, and the MR includes the condition required to switch to the neighboring cell. When the conditions in the MR are met, the terminal device does not send a measurement report to the network, but automatically switches to the target neighbor cell.

It should be noted that a cell generally has 1 or 2 neighboring cells with the same frequency, and 1 or 2 neighboring cells with different frequencies. With the deployment and completion of the communication system, the same region can be overlaid later, so that after the terminal equipment is accessed to the serving cell, the network equipment can configure some adjacent cells of the serving cell and CHO configuration information corresponding to the adjacent cells for the terminal equipment.

When the channel quality of a neighboring cell (i.e., a target neighboring cell) corresponding to a certain piece of CHO configuration information satisfies a condition, the terminal device will immediately switch from the serving cell to the target neighboring cell, and delete the CHO configuration information of other neighboring cells. It can be seen that in the CHO scheme, the terminal device may immediately handover to the target neighbor cell if the conditions are met. Although the channel quality of the target neighboring cell meets the condition, there may be a situation that the target neighboring cell does not necessarily ensure the subsequent communication quality of the terminal device, or the target neighboring cell is not the best neighboring cell in terms of ensuring the subsequent communication quality of the terminal device, so that the cell handover decision for the immediate handover may bring certain disadvantages.

Third, an example description of a cell handover method

Based on this, the present application implements network configuration of multiple neighboring cells of a serving cell and conditional handover configuration information, i.e., multiple conditional handover configuration information, corresponding to each of the neighboring cells, through a measurement report when a first condition is satisfied; in order to avoid always performing comprehensive measurement, a second condition is introduced, so that only one adjacent cell corresponding to each of the plurality of condition switching configuration information needs to be comprehensively measured before the second condition is met to determine a target adjacent cell, and the accuracy of measuring the adjacent cells is improved through comprehensive measurement, so that the finally decided target adjacent cell can be more favorable for ensuring the subsequent communication quality of the terminal equipment; by introducing the moving speed state and the channel quality state, various different cell switching strategies can be determined according to the moving speed state and the channel quality state, and the cell switching strategy can indicate whether the comprehensive measurement is continued before the second condition is met, whether the comprehensive measurement is ended in advance to perform switching or the comprehensive measurement is not ended in advance to perform switching, so that the flexibility of cell switching is improved. If the cell switching strategy is to continue to carry out comprehensive measurement on the channel quality of the target adjacent cell, the measurement accuracy is further improved through the comprehensive measurement; if the cell switching strategy is to finish the comprehensive measurement before the second condition is met and switch from the serving cell to the target adjacent cell, the cell switching is executed in advance to improve the switching efficiency; and if the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell after the second condition is met, cell switching is realized.

A cell handover method according to an embodiment of the present application is described below with an interaction between a network device and a terminal device as an example.

It should be noted that the network device may be a chip, a chip module, a communication module, or the like, and the terminal device may be a chip, a chip module, a communication module, or the like. That is, the method is applied to a network device or a terminal device, and is not particularly limited thereto.

As shown in fig. 2, a schematic flow chart of a cell handover method according to an embodiment of the present application includes the following steps:

s210, the network equipment sends a plurality of condition switching configuration information under the condition that the first condition is met.

Correspondingly, the terminal equipment receives the plurality of condition switching configuration information.

It should be noted that, when the first condition is satisfied, the terminal device may report the measurement report to the network device, so that the network device determines, according to the measurement report, a plurality of neighboring cells of the serving cell and condition switching configuration information corresponding to the neighboring cells, and sends the plurality of condition switching configuration information to the terminal device.

1. First condition, first event, measurement report, condition switching configuration information

The first condition may be a first event for triggering the terminal device to report the measurement report. It should be noted that the first condition can also be described by other terms, and is not limited thereto.

The first event may be that the channel quality of the serving cell is greater than or equal to a first threshold (threshold). It should be noted that the first threshold may be a threshold of channel quality, such as a threshold of Reference Signal Received Power (RSRP). In addition, the first event (the first threshold) may also be described by using other terms, which is not limited thereto.

The measurement report can be used for configuring a plurality of conditional switch configuration information by the network.

The conditional handover configuration information may include information required for configuring the terminal device to handover from the serving cell to the neighboring cell. Wherein each of the plurality of conditional handover configuration information corresponds to a neighboring cell.

For example, the neighboring cells of the serving cell in which the terminal device is located are cell 1, cell 2, and cell 3. After the terminal device reports the measurement report to the network device, the network device determines the condition switching configuration information corresponding to the cell 1, the condition switching configuration information corresponding to the cell 2, and the condition switching configuration information corresponding to the cell 3 according to the measurement report. The conditional handover configuration information corresponding to the cell 1 is used for configuring terminal equipment to be handed over from the serving cell to the cell 1, the conditional handover configuration information corresponding to the cell 2 is used for configuring terminal equipment to be handed over from the serving cell to the cell 2, and the conditional handover configuration information corresponding to the cell 3 is used for configuring terminal equipment to be handed over from the serving cell to the cell 3.

In some possible implementations, the first condition (first event/first threshold) may be network configured, may be pre-configured, and may be protocol specified.

For example, in case of network configuration, the network device may configure the first condition (the first event/the first threshold) to the terminal device through higher layer signaling (e.g., measurement configuration information in RRC signaling).

In some possible implementations, the plurality of conditional handover configuration information may be configured to the terminal device by higher layer signaling.

To sum up, as described in the following by way of example, after the terminal device accesses the serving cell, the network device corresponding to the serving cell configures measurement configuration information to the terminal device through higher layer signaling (e.g., a measurement configuration (measconfiguration) cell carried by an RRC Connection reconfiguration (RRC Connection reconfiguration) message); the Measurement control information may include a Measurement object, a Reporting Configuration (Reporting Configuration), a Measurement identifier, a Measurement Gap (Measurement Gap), and the like, that is, the Measurement Configuration information may include (carry) a first event (i.e., a first condition) for triggering the terminal device to report a Measurement report. That is, the first condition (first event/first threshold) is configured by higher layer signaling to the terminal device. Then, the terminal device measures the channel quality of the serving cell through the measurement configuration information. And when the measured channel quality of the serving cell meets the first condition, the terminal equipment fills the measurement result into the measurement report and reports the measurement report. That is, the measurement report trigger is an event trigger. And finally, the network equipment configures a plurality of condition switching configuration information to the terminal equipment according to the measurement report.

2. Channel quality

In some possible implementations, the channel Quality may include at least one of RSRP, Reference Signal Receiving Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Received Signal Strength Indication (RSSI).

It should be noted that the channel quality of the serving cell may also be used to indicate the distance between the geographical location of the terminal device and the central geographical location of the serving cell. If the channel quality of the serving cell is higher, it is indicated that the distance between the geographical position of the terminal device and the central geographical position of the serving cell is closer, and the serving cell can ensure the communication quality of the terminal device; if the channel quality of the serving cell is smaller, it indicates that the distance between the geographical position of the terminal device and the central geographical position of the serving cell is farther, and the serving cell cannot guarantee the communication quality of the terminal device.

3. First threshold value

Since the first threshold may be a threshold of the channel quality of the serving cell, the first threshold indicates that the distance between the geographical position of the current terminal device and the central geographical position of the serving cell has begun to become far, and the communication quality has begun to deteriorate, possibly in an edge area of the serving cell, which has begun to be adjacent to a plurality of adjacent cells. At this time, the terminal device needs to report the measurement report, so that the network configures the conditional handover configuration information for accessing the neighboring cells for the terminal device.

And S220, before the second condition is met, the terminal device performs comprehensive measurement on each adjacent cell corresponding to each of the plurality of pieces of condition switching configuration information to determine the target adjacent cell.

It should be noted that before the second condition is met, the terminal device may perform comprehensive measurement (where the comprehensive measurement is used to improve the accuracy of measuring the neighboring cell) on one neighboring cell corresponding to each of the plurality of pieces of condition switching configuration information to determine the target neighboring cell, so that the accuracy of measuring the neighboring cell is improved through the comprehensive measurement, and the finally decided target neighboring cell is more favorable for ensuring the subsequent communication quality of the terminal device.

4. Second condition, second event

The second condition may be a second event for triggering the terminal device to end the integrated measurement and switch out of the serving cell. It should be noted that the second condition can also be described by other terms, and is not limited to this.

The second event may be that the channel quality of the serving cell is greater than or equal to a second threshold, which is less than the first threshold.

It should be noted that the second threshold may be a threshold of channel quality, and the first threshold and the second threshold are of the same channel quality type, for example, the first threshold is a threshold of RSRP, and the second threshold is also a threshold of RSRP. In addition, the second event (the second threshold) may also be described by other terms, which is not limited thereto.

In addition, in the traditional condition switching process, the network only needs to configure a plurality of condition switching configuration information to the terminal equipment, and the terminal equipment measures the channel quality of a plurality of adjacent cells and autonomously switches when the channel quality of a certain adjacent cell meets the condition. The present application does not simply perform channel quality testing, but performs comprehensive testing, which may require more resources to be occupied. In order to avoid that the terminal device always performs the comprehensive test, the second condition is introduced, so that only one adjacent cell corresponding to each of the plurality of condition switching configuration information needs to be comprehensively measured before the second condition is met to determine the target adjacent cell.

In some possible implementations, the second condition (second event/second threshold) may be network configured, may be preconfigured, may be protocol specified.

For example, in the case of a network configuration, the network device may switch the configuration information to carry (the second event/the second threshold) under a plurality of conditions, so as to implement the network configuration second condition (the second event/the second threshold).

5. Second threshold value

Since the second threshold may be a threshold of the channel quality of the serving cell, the second threshold indicates that the distance between the geographical location of the current terminal device and the central geographical location of the serving cell is too long to ensure the communication quality. The terminal device needs to be handed over from the serving cell to the neighboring cell.

6. Comprehensive measurement

In some possible implementations, the integrated measurements may include measuring RSRP, RSRQ, and SINR of neighboring cells.

It should be noted that, currently, only the RSRP of the neighboring cell is measured, and the target neighboring cell determined by measuring the RSRP may not be the best neighboring cell in terms of ensuring the subsequent communication quality of the terminal device. Therefore, the RSRP, the RSRQ and the SINR of the adjacent cells are measured, comprehensive measurement of the adjacent cells is achieved, and accuracy of measuring the adjacent cells is improved by measuring the RSRP, the RSRQ and the SINR.

7. How to synthesize measurements to determine target neighbor cells

In some possible implementations, the performing, in S220, a comprehensive measurement on a neighboring cell corresponding to each of the plurality of conditional handover configuration information to determine the target neighboring cell may include the following steps:

measuring the RSRP, the RSRQ and the SINR of an adjacent cell corresponding to each conditional switch configuration information;

carrying out weighted average on the RSRP, the RSRQ and the SINR of each corresponding adjacent cell to obtain a comprehensive measurement result of each corresponding adjacent cell;

and taking an adjacent cell corresponding to the maximum item in the comprehensive measurement result of each respective corresponding adjacent cell as a target adjacent cell, or taking an adjacent cell corresponding to any item in the comprehensive measurement result of each respective corresponding adjacent cell, which is larger than the preset comprehensive measurement result, as a target adjacent cell.

It should be noted that, the RSRP, RSRQ, and SINR of each neighboring cell may be measured, and the RSRP, RSRQ, and SINR obtained through measurement may be weighted and averaged to obtain a comprehensive measurement result of each neighboring cell. Then, the target-to-neighbor cell is determined by two ways:

one way is that: and taking the adjacent cell corresponding to the maximum item in the comprehensive measurement result of each adjacent cell as a target adjacent cell.

For example, when there are cell 1, cell 2, and cell 3 in the neighboring cells of the serving cell where the terminal device is located, the terminal measures RSRP, RSRQ, and SINR of the cell 1, cell 2, and cell 3, respectively, and performs weighted averaging to obtain an integrated measurement result of the cell 1, an integrated measurement result of the cell 2, and an integrated measurement result of the cell 3. If the maximum term of the integrated measurement result of the cell 1 is among the three integrated measurement results, the cell 1 is taken as the target neighbor cell.

Compared with single measurement RSPR or RSRQ, the method and the device have the advantages that by carrying out weighted average on RSRP, RSRQ and SINR, the channel quality can be more accurately reflected by the calculated comprehensive measurement result, the target adjacent cell is finally decided by using the principle of the maximum term, and the finally decided target adjacent cell can be more favorable for guaranteeing the subsequent communication quality of the terminal equipment.

The other mode is as follows: and taking an adjacent cell corresponding to one of the plurality of items in the comprehensive measurement results of the adjacent cells which is greater than the preset comprehensive measurement result as a target adjacent cell. Wherein the preset integrated measurement result may be network configured or preconfigured.

For example, when there are cell 1, cell 2, and cell 3 in the neighboring cells of the serving cell where the terminal device is located, the terminal measures RSRP, RSRQ, and SINR of cell 1, cell 2, and cell 3, respectively, and performs weighted averaging to obtain a comprehensive measurement result of cell 1, a comprehensive measurement result of cell 2, and a comprehensive measurement result of cell 3. If the integrated measurement result of the cell 1 and the integrated measurement result of the cell 2 in the three integrated measurement results are both greater than the preset integrated measurement result, the terminal device selects an adjacent cell from the cell 1 and the cell 2 as a target adjacent cell.

Therefore, compared with single measurement RSPR or RSRQ, the method and the device have the advantages that by carrying out weighted average on RSRP, RSRQ and SINR, the comprehensive measurement result obtained through calculation can reflect the channel quality more accurately. Then, a plurality of candidate neighbor cells satisfying the requirement are selected by introducing a preset integrated measurement result. Therefore, one of the candidate adjacent cells can be flexibly selected as the target adjacent cell according to the requirement, the flexibility of selection is improved to ensure the flexibility of cell switching, and the finally decided target adjacent cell can be more favorable for ensuring the subsequent communication quality of the terminal equipment.

8. How to select one item from a plurality of items

It should be noted that, for how to select one item from a plurality of items, the present application may adopt a closest geographic distance principle, a historical access principle, an arbitrary selection principle, and the like.

The principle of closest geographic distance may be understood as that a neighboring cell closest to the position of the terminal device is taken as a target neighboring cell. For example, in the above example, the integrated measurement result of cell 1 and the integrated measurement result of cell 2 are both greater than the preset integrated measurement result. And if the cell 1 is closest to the position of the terminal equipment, the terminal equipment selects the cell 1 as a target adjacent cell.

The historical access principle may be understood as that a neighboring cell that the terminal device has historically accessed or a neighboring cell with the highest historical access frequency is used as the target neighboring cell. For example, in the above example, the integrated measurement result of cell 1 and the integrated measurement result of cell 2 are both greater than the preset integrated measurement result. If the terminal equipment has access to the cell 1 and the cell 2 historically, the number of times of accessing the cell 1 historically is 3, and the number of times of accessing the cell 2 historically is 1, the terminal equipment selects the cell 1 as a target adjacent cell.

The arbitrary selection principle can be understood as that the terminal device arbitrarily selects one neighboring cell as the target neighboring cell. For example, in the above example, the integrated measurement result of cell 1 and the integrated measurement result of cell 2 are both greater than the preset integrated measurement result. The terminal device arbitrarily selects one of the cell 1 and the cell 2 as a target neighbor cell.

S230, the terminal equipment determines a cell switching strategy according to the moving speed state and the channel quality state, wherein the cell switching strategy is one of the following items: continuing to perform the integrated measurement of the channel quality of the target neighbor cell until a second condition is satisfied, ending the integrated measurement and switching from the serving cell to the target neighbor cell until the second condition is satisfied, and ending the integrated measurement and switching from the serving cell to the target neighbor cell after the second condition is satisfied.

It should be noted that, the mobile fast-slow state and the channel quality state are introduced in the present application, so that the terminal device can determine a plurality of different cell handover strategies according to the mobile fast-slow state and the channel quality state, and the cell handover strategies can indicate whether to continue the comprehensive measurement before the second condition is met, to end the comprehensive measurement in advance for handover, or not to end the comprehensive measurement in advance for handover, thereby improving the flexibility of cell handover. If the cell switching strategy is to continue to carry out comprehensive measurement on the channel quality of the target adjacent cell, the measurement accuracy is further improved; if the cell switching strategy is to finish the comprehensive measurement before the second condition is met and switch from the serving cell to the target adjacent cell, the cell switching is executed in advance and the switching efficiency is improved; and if the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell after the second condition is met, cell switching is realized.

9. Moving speed state, preset time, preset change threshold value and preset speed threshold value

The moving speed state may indicate a moving speed condition that the terminal device is in the serving cell before the second condition is satisfied.

In some possible implementations, the moving fast-slow state may be determined by a first magnitude relationship between a change absolute value of the channel quality of the serving cell for a preset time before the second condition is satisfied and a preset change threshold, or by a first magnitude relationship between a moving speed of the terminal device and a preset speed threshold before the second condition is satisfied.

The preset time, the preset change threshold and the preset speed threshold can be configured or preconfigured by the network.

It should be noted that the present application may determine the moving fast and slow states in the following two ways:

one way is that: the moving speed state is determined according to a magnitude relation (for convenience of distinguishing description, the magnitude relation is a "first magnitude relation") between a change absolute value of the channel quality of the serving cell within a preset time before the second condition is met and a preset change threshold.

If the absolute value of the change is smaller than a preset change threshold, the terminal device is in a low-speed moving state; if the absolute value of the change is greater than or equal to the preset change threshold, the terminal equipment is in a high-speed moving state.

For example, before the second condition is satisfied, the terminal device measures a magnitude relationship between a change absolute value of RSRP of the serving cell within 1s and 3 dBm. If the absolute value of the change is less than 3dBm, the terminal equipment is indicated to have a slow moving speed and is in a low-speed moving state; if the absolute value of the change is greater than or equal to 3dBm, the current moving speed of the terminal equipment is high, and the terminal equipment is in a high-speed moving state.

The other mode is as follows: and determining the moving speed state according to the size relationship between the moving speed of the terminal equipment and the preset speed threshold before the second condition is met (for the convenience of distinguishing description, the size relationship is a first size relationship).

If the moving speed of the terminal equipment is smaller than a preset speed threshold, the terminal equipment is in a low-speed moving state; if the moving speed of the terminal equipment is greater than or equal to the preset speed threshold value, the terminal equipment is in a high-speed moving state.

10. Channel quality status

The channel quality status may indicate a channel quality variation of the serving cell before the second condition is satisfied.

In some possible implementations, the channel quality status may be determined by a second size relationship between the channel quality of the serving cell and a target threshold before the second condition is satisfied, the target threshold being between the first threshold and the second threshold.

And if the channel quality of the serving cell is greater than or equal to the target threshold, determining that the channel quality change situation of the serving cell before the second condition is met is a first channel quality state. It can be appreciated that the channel quality of the current serving cell is between the first threshold and the target threshold. If the channel quality of the serving cell is less than the target threshold, the channel quality change condition of the serving cell before the second condition is met is taken as a "second channel quality state". It can be appreciated that the channel quality of the current serving cell is between the target threshold and the second threshold.

11. Target threshold

It should be noted that, since the channel quality of the serving cell may be used to indicate the distance between the geographic location of the terminal device and the central geographic location of the serving cell, and the target threshold may be a threshold of the channel quality of the serving cell, if the channel quality of the serving cell is between the first threshold and the target threshold (i.e., the first channel quality state), it indicates that the distance between the geographic location of the terminal device and the central geographic location of the serving cell is somewhat long, but the communication quality of the terminal device can also be ensured.

If the channel quality of the serving cell is between the target threshold and the second threshold (i.e., the second channel quality state), it indicates that the distance between the geographical location of the terminal device and the central geographical location of the serving cell is already long, and the communication quality of the terminal device can only be marginally ensured.

In summary, in order to determine the channel quality variation situation of the serving cell before the second condition is met, the present application introduces a target threshold, and determines the cell handover strategy by using the size relationship (referred to as "second size relationship" for ease of description) between the channel quality of the serving cell and the target threshold.

In some possible implementations, the target threshold may be determined by a first threshold and a second threshold.

For example, if the first threshold is-10 dBm and the second threshold is-20 dBm, then the target threshold is-15 dBm (i.e., (-10dBm) + (-20dBm))/2 ═ 15 dBm).

12. How to determine cell handover strategies

In one possible implementation, the determining the cell switching policy according to the mobile fast-slow state and the channel quality state in S230 may include the following steps:

and if the moving speed state is a low-speed moving state or a high-speed moving state and the channel quality state is a first channel quality state, determining the cell switching strategy to continue to comprehensively measure the channel quality of the target adjacent cell before the second condition is met.

It can be understood that, if the channel quality of the serving cell is between the first threshold and the target threshold (i.e. the first channel quality state), and the communication quality of the terminal device can also be ensured, the terminal device can continue to perform comprehensive measurement on the channel quality of the target neighboring cell in both the low-speed moving state and the high-speed moving state, so as to further improve the measurement accuracy through the comprehensive measurement.

and if the moving speed state is a high-speed moving state and the channel quality state is a second channel quality state, determining that the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell before the second condition is met.

It can be understood that, if the channel quality of the serving cell is between the target threshold and the second threshold (i.e. the second channel quality state), that is, the distance between the current geographic location of the terminal device and the central geographic location of the serving cell is already a little long, the communication quality of the terminal device can only be marginally ensured, and the terminal device is in a high-speed moving state, which indicates that the current moving speed of the terminal device is fast, and the channel quality of the serving cell may soon reach the second threshold. At this time, the terminal device may end the comprehensive measurement in advance and switch from the serving cell to the target neighboring cell, so as to implement cell switching in advance to improve switching efficiency.

and if the moving speed state is the low-speed moving state and the channel quality state is the second channel quality state, determining that the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell after the second condition is met.

It can be understood that, if the channel quality of the serving cell is between the target threshold and the second threshold (i.e. the second channel quality state) and the terminal device is in the low-speed moving state, it indicates that the current moving speed of the terminal device is slow, and the channel quality of the serving cell may reach the second threshold for a while. At this time, the terminal device may continue to perform the comprehensive measurement, and end the comprehensive measurement to switch to the target neighboring cell after the second condition is met, thereby implementing the cell switching.

Fourth, example description of a cell switching apparatus

The above description has mainly described the solution of the embodiments of the present application from the perspective of the method side. It is understood that the terminal device or the network device includes a hardware structure and/or a software module for performing the respective functions in order to implement the above functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

According to the method example, the terminal device or the network device can be divided into the functional units. For example, each functional unit may be divided for each function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module. It should be noted that the division of the units in the embodiment of the present application is illustrative, and is only one division of the logic functions, and there may be another division in actual implementation.

In the case of using an integrated unit, fig. 3 is a block diagram of functional units of a cell switching apparatus according to an embodiment of the present application. The cell switching apparatus 300 includes: a receiving unit 301, a measuring unit 302 and a determining unit 303.

In some possible implementations, the receiving unit 301 may be a module unit for processing signals, data, information, etc., and is not particularly limited; the measurement unit 302 may be a module unit for processing signals, data, information, etc., and is not particularly limited thereto; the determination unit 303 may be a module unit for processing signals, data, information, etc., and is not particularly limited.

In some possible implementations, the cell switching apparatus 300 may further include a storage unit for storing computer program code or instructions executed by the cell switching apparatus 300. The storage unit may be a memory.

In some possible implementations, the cell switching apparatus 300 may be a chip or a chip module.

In some possible implementations, the receiving unit 301, the measuring unit 302 and the determining unit 303 may be integrated in one unit or in different units.

For example, the receiving unit 301 may be integrated in the communication unit, while the measuring unit 302 and the determining unit 303 may be integrated in the processing unit.

For another example, the receiving unit 301, the measuring unit 302 and the determining unit 303 may be integrated in a processing unit.

The communication unit may be a communication interface, a transceiver circuit, etc.

The processing unit may be a processor or a controller, and may be, for example, a baseband processor, a baseband chip, a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. A processing unit may also be a combination of computing functions, e.g., comprising one or more microprocessors in combination, a DSP and a microprocessor in combination, or the like.

In some possible implementations, the receiving unit 301, the measuring unit 302 and the determining unit 303 are configured to perform any one of the steps performed by the terminal device/chip module and the like in the above method embodiments, such as sending or receiving data and the like. The details will be described below.

In a specific implementation, the receiving unit 301, the measuring unit 302 and the determining unit 303 are configured to perform any one of the steps in the above method embodiments, and when performing an action such as sending, other units may be optionally called to complete the corresponding operation. The details will be described below.

A receiving unit 301, configured to receive multiple pieces of conditional handover configuration information when a first condition is met, where the first condition is a first event for triggering a terminal device to report a measurement report, the first event is that channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for a network to configure multiple pieces of conditional handover configuration information, the conditional handover configuration information includes information required for configuring the terminal device to switch from the serving cell to an adjacent cell, and each of the multiple pieces of conditional handover configuration information corresponds to one adjacent cell;

a measuring unit 302, configured to perform comprehensive measurement on an adjacent cell corresponding to each of the multiple pieces of conditional handover configuration information before a second condition is met to determine a target adjacent cell, where the second condition is a second event for triggering the terminal device to end the comprehensive measurement and handover out the serving cell, the second event is that channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold;

a determining unit 303, configured to determine a cell switching policy according to the moving speed state and the channel quality state, where the cell switching policy is one of the following: continuing to perform comprehensive measurement on the channel quality of the target adjacent cell before the second condition is met, ending the comprehensive measurement before the second condition is met and switching from the serving cell to the target adjacent cell, ending the comprehensive measurement after the second condition is met and switching from the serving cell to the target adjacent cell, wherein the moving speed state represents the moving speed condition that the terminal device is in the serving cell before the second condition is met, and the channel quality state represents the channel quality change condition of the serving cell before the second condition is met.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 3 may be described in detail in the above-described method embodiment, and details are not described herein again.

In some possible implementations, the moving fast-slow state is determined by a first magnitude relationship between a change absolute value of the channel quality of the serving cell within a preset time before the second condition is satisfied and a preset change threshold, or by a first magnitude relationship between a moving speed of the terminal device and a preset speed threshold before the second condition is satisfied;

a channel quality status determined by a second size relationship between the channel quality of the serving cell before the second condition is satisfied and a target threshold, the target threshold being between the first threshold and the second threshold.

one way is that: the moving speed state is determined according to a magnitude relation (for convenience of description, the magnitude relation is a "first magnitude relation") between a change absolute value of the channel quality of the serving cell within a preset time before the second condition is met and a preset change threshold.

In some possible implementations, in determining the cell handover strategy according to the moving fast-slow state and the channel quality state, the determining unit 303 is configured to:

if the moving speed state is a low-speed moving state or a high-speed moving state, and the channel quality state is a first channel quality state, determining the cell switching strategy to continue to carry out comprehensive measurement on the channel quality of the target adjacent cell before a second condition is met;

if the moving speed state is a high-speed moving state and the channel quality state is a second channel quality state, determining that the cell switching strategy is to finish comprehensive measurement and switch from the serving cell to the target adjacent cell before the second condition is met;

if the moving speed state is a low-speed moving state and the channel quality state is a second channel quality state, determining that the cell switching strategy is to finish the comprehensive measurement and switch from the serving cell to the target adjacent cell after the second condition is met;

the low-speed moving state is that the absolute value of change is smaller than a preset change threshold, or the moving speed of the terminal equipment is smaller than a preset speed threshold;

the high-speed moving state is that the absolute value of change is greater than or equal to a preset change threshold, or the moving speed of the terminal equipment is greater than or equal to a preset speed threshold;

a first channel quality state, in which the channel quality of the serving cell is greater than or equal to a target threshold;

and a second channel quality state, in which the channel quality of the serving cell is less than the target threshold.

If the channel quality of the serving cell is between the target threshold and the second threshold (i.e., the second channel quality state), that is, the distance between the current geographic position of the terminal device and the central geographic position of the serving cell is already long, the communication quality of the terminal device can only be marginally ensured, and the terminal device is in a high-speed moving state, it indicates that the current moving speed of the terminal device is fast, and the channel quality of the serving cell may quickly reach the second threshold. At this time, the terminal device may end the comprehensive measurement in advance and switch from the serving cell to the target neighboring cell, so as to implement cell switching in advance to improve the switching efficiency.

If the channel quality of the serving cell is between the target threshold and the second threshold (i.e., the second channel quality state) and the terminal device is in the low-speed moving state, it indicates that the current moving speed of the terminal device is slow, and the channel quality of the serving cell may reach the second threshold for a while. At this time, the terminal device may continue to perform the comprehensive measurement, and end the comprehensive measurement to switch to the target neighboring cell after the second condition is met, thereby implementing the cell switching.

In some possible implementations, the integrated measurements include measuring reference signal received power, RSRP, reference signal received quality, RSRQ, and signal to interference plus noise ratio, SINR, of the neighboring cells.

In some possible implementations, in terms of performing comprehensive measurement on one neighboring cell corresponding to each of the plurality of conditional handover configuration information to determine the target neighboring cell, the measurement unit 302 is configured to:

and taking an adjacent cell corresponding to the maximum item in the comprehensive measurement result of each corresponding adjacent cell as a target adjacent cell, or taking an adjacent cell corresponding to one item in the comprehensive measurement result of each corresponding adjacent cell, which is larger than a preset comprehensive measurement result, as a target adjacent cell.

In some possible implementations, the second condition is carried by a plurality of conditional switch configuration information.

Therefore, the second condition is configured by the network through the plurality of condition switching configuration information carrying the second condition.

In some possible implementations, the first condition is carried by measurement configuration information sent by the network.

Therefore, the first condition of network configuration is realized by measuring the first condition carried by the configuration information.

Description of example of a fifth and further cell handover device

In the case of using an integrated unit, fig. 4 is a block diagram of functional units of a cell switching apparatus according to an embodiment of the present application. The cell switching apparatus 400 includes: a transmission unit 401.

In some possible implementations, the sending unit 401 may be a module unit for processing signals, data, information, etc., and is not particularly limited.

In some possible implementations, the cell switching apparatus 400 may further include a storage unit for storing computer program code or instructions for execution by the cell switching apparatus 300. The storage unit may be a memory.

In some possible implementations, the cell switching apparatus 400 may be a chip or a chip module.

In some possible implementations, the sending unit 401 may be integrated in other units.

For example, the sending unit 401 may be integrated in a communication unit.

Also for example, the sending unit 401 may be integrated in a processing unit.

The processing unit may be a processor or a controller, and may be, for example, a baseband processor, a baseband chip, a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processing unit may also be a combination that performs computing functions, e.g., a combination of one or more microprocessors, a DSP and a microprocessor, etc.

In some possible implementations, the sending unit 401 is configured to perform any step performed by the terminal device/chip module or the like in the above method embodiments, such as sending or receiving data or the like. The details will be described below.

In a specific implementation, the sending unit 401 is configured to perform any step in the above method embodiments, and when performing an action such as sending, other units may be optionally called to complete the corresponding operation. The details will be described below.

A sending unit 401, configured to receive multiple pieces of conditional handover configuration information when a first condition is met, where the first condition is a first event used to trigger a terminal device to report a measurement report, the first event is that channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for a network to configure multiple pieces of conditional handover configuration information, the conditional handover configuration information includes information required to configure the terminal device to handover from the serving cell to an adjacent cell, and each of the multiple pieces of conditional handover configuration information corresponds to one adjacent cell.

As can be seen, in the present application, when the first condition is satisfied, the network is configured with the multiple neighboring cells of the serving cell and the conditional handover configuration information, that is, the multiple conditional handover configuration information, corresponding to the neighboring cells, respectively.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 4 may be described in detail in the above-described method embodiment, and details are not described herein again.

In some possible implementations, the multiple pieces of conditional handover configuration information carry a second condition, where the second condition is a second event for triggering the terminal device to end the comprehensive measurement and handover out of the serving cell, and the second event is that the channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold.

Description of an exemplary embodiment of a terminal

Referring to fig. 5, fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device 500 comprises, among other things, a processor 510, a memory 520 and a communication bus for connecting the processor 510 and the memory 520.

In some possible implementations, the memory 520 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 520 is used for storing program codes executed by the terminal device 500 and transmitted data.

In some possible implementations, the terminal device 500 further includes a communication interface for receiving and transmitting data.

In some possible implementations, processor 510 may be one or more Central Processing Units (CPUs), which in the case of processor 510 being one Central Processing Unit (CPU) may be a single core CPU or a multi-core CPU.

In some possible implementations, processor 510 may be a baseband chip, Central Processing Unit (CPU), general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic, hardware component, or any combination thereof.

In particular implementation, the processor 510 in the terminal device 500 is configured to execute the computer program or the instructions 521 stored in the memory 520 to perform the following operations:

receiving a plurality of condition switching configuration information under the condition that a first condition is met, wherein the first condition is a first event for triggering terminal equipment to report a measurement report, the first event is that the channel quality of a serving cell is greater than or equal to a first threshold value, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information comprises information required for configuring the terminal equipment to switch from the serving cell to an adjacent cell, and each condition switching configuration information corresponds to one adjacent cell;

before a second condition is met, performing comprehensive measurement on each corresponding adjacent cell in the plurality of pieces of conditional handover configuration information to determine a target adjacent cell, wherein the second condition is a second event for triggering the terminal equipment to finish the comprehensive measurement and switch out the serving cell, the second event is that the channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold;

determining a cell switching strategy according to the moving speed state and the channel quality state, wherein the cell switching strategy is one of the following items: continuing to perform comprehensive measurement on the channel quality of the target adjacent cell before the second condition is met, ending the comprehensive measurement before the second condition is met and switching from the serving cell to the target adjacent cell, ending the comprehensive measurement after the second condition is met and switching from the serving cell to the target adjacent cell, wherein the moving speed state represents the moving speed condition that the terminal device is in the serving cell before the second condition is met, and the channel quality state represents the channel quality change condition of the serving cell before the second condition is met.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 5 may be described in detail in the above-described method embodiment, and details are not described here again.

If the absolute value of the change is smaller than a preset change threshold value, the terminal equipment is in a low-speed moving state; if the absolute value of the change is greater than or equal to the preset change threshold, the terminal equipment is in a high-speed moving state.

In some possible implementations, in determining a cell handover policy based on the fast-slow moving state and the channel quality state, the processor 510 in the terminal device 500 is configured to execute the computer program or instructions 521 stored in the memory 520 to:

In some possible implementations, in performing the integrated measurement on one neighboring cell corresponding to each of the plurality of conditional handover configuration information to determine the target neighboring cell, the processor 510 in the terminal device 500 is configured to execute the computer program or instructions 521 stored in the memory 520, and perform the following operations:

Seventh, an example illustration of a network device

Referring to fig. 6, fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present disclosure. Network device 600 includes, among other things, a processor 610, a memory 620, and a communication bus connecting processor 610 and memory 620.

In some possible implementations, the memory 620 includes, but is not limited to, RAM, ROM, EPROM or CD-ROM, and the memory 620 is used to store relevant instructions and data.

In some possible implementations, the network device 600 also includes a communication interface for receiving and transmitting data.

In some possible implementations, the processor 610 may be one or more Central Processing Units (CPUs), which in the case of the processor 610 being one Central Processing Unit (CPU) may be a single core CPU or a multi-core CPU.

In some possible implementations, the processor 610 may be a baseband chip, a Central Processing Unit (CPU), a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof.

In some possible implementations, the processor 610 in the network device 600 is configured to execute the computer program or instructions 621 stored in the memory 620 to perform the following operations:

receiving a plurality of condition switching configuration information under the condition that a first condition is met, wherein the first condition is a first event used for triggering terminal equipment to report a measurement report, the first event is that the channel quality of a serving cell is greater than or equal to a first threshold value, the measurement report is used for configuring a plurality of condition switching configuration information by a network, the condition switching configuration information comprises information required for configuring the terminal equipment to switch from the serving cell to an adjacent cell, and each of the plurality of condition switching configuration information corresponds to one adjacent cell.

It should be noted that specific implementation of each operation in the embodiment shown in fig. 6 may be described in detail in the above-described method embodiment, and details are not described herein again.

Eight, other related examples

In some possible implementations, the above method embodiments may be applied to or in a terminal device. That is to say, the execution subject of the method embodiment may be a terminal device, and may be a chip, a chip module, a module, or the like, which is not particularly limited.

In some possible implementations, the above method embodiments may be applied to or among network devices. That is to say, the execution subject of the method embodiment may be a network device, and may be a chip, a chip module, a module, or the like, which is not limited in particular.

The present application further provides a chip, which includes a processor, a memory, and a computer program or an instruction stored in the memory, where the processor executes the computer program or the instruction to implement the steps described in the foregoing method embodiments.

The present application further provides a chip module, which includes a transceiver component and a chip, where the chip includes a processor, a memory, and a computer program or an instruction stored in the memory, and the processor executes the computer program or the instruction to implement the steps described in the foregoing method embodiments.

Embodiments of the present application further provide a computer-readable storage medium, which stores a computer program or instructions, and when the computer program or instructions are executed, the computer program or instructions implement the steps described in the above method embodiments.

Embodiments of the present application further provide a computer program product, which includes a computer program or instructions, and when executed, the computer program or instructions implement the steps described in the above method embodiments.

The embodiment of the application also provides a communication system, which comprises the terminal equipment and the network equipment.

For simplicity of description, the above embodiments are described as a series of combinations of operations. Those skilled in the art should appreciate that the present application is not limited by the order of acts described, as some steps in the embodiments of the present application may occur in other orders or concurrently. In addition, those skilled in the art should also realize that the embodiments described in the specification all belong to the preferred embodiments, and that the referred actions, steps, modules, units, and the like are not necessarily required by the embodiments of the present application.

In the foregoing embodiments, the descriptions of the embodiments of the present application have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The steps of a method or algorithm described in the embodiments of the present application may be implemented in hardware, or may be implemented by a processor executing software instructions. The software instructions may consist of corresponding software modules, which may be stored in RAM, flash memory, ROM, EPROM, electrically erasable programmable read-only memory (EEPROM), registers, hard disk, a removable disk, a compact disc read-only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be located in a terminal device or a management device. Of course, the processor and the storage medium may reside as discrete components in a terminal device or a management device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in the embodiments of the present application may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

Each module/unit included in each apparatus and product described in the above embodiments may be a software module/unit, or may also be a hardware module/unit, or may also be a part of a software module/unit, and a part of a hardware module/unit. For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated within the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each apparatus and product applied to or integrated in the terminal device, each module/unit included in the apparatus and product may all be implemented by hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal device, or at least part of the modules/units may be implemented by a software program running on a processor integrated inside the terminal device, and the rest (if any) part of the modules/units may be implemented by hardware such as a circuit.

The above-mentioned embodiments, objects, technical solutions and advantages of the embodiments of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims

1. A method for cell handover, comprising:

receiving a plurality of conditional handover configuration information under the condition that a first condition is met, wherein the first condition is a first event for triggering a terminal device to report a measurement report, the first event is that the channel quality of a serving cell is greater than or equal to a first threshold, the measurement report is used for configuring a plurality of conditional handover configuration information by a network, the conditional handover configuration information comprises information required for configuring the terminal device to switch from the serving cell to an adjacent cell, and each of the plurality of conditional handover configuration information corresponds to an adjacent cell;

2. The method according to claim 1, wherein the mobility state is determined by a first magnitude relationship between an absolute value of a change of the channel quality of the serving cell within a preset time before the second condition is met and a preset change threshold, or by a first magnitude relationship between a mobility speed of the terminal device and a preset speed threshold before the second condition is met;

the channel quality status is determined by a second size relationship between the channel quality of the serving cell and a target threshold before the second condition is satisfied, the target threshold being between the first threshold and the second threshold.

3. The method of claim 2, wherein determining the cell handover strategy according to the mobile fast-slow state and the channel quality state comprises:

if the moving speed state is a low-speed moving state or a high-speed moving state and the channel quality state is a first channel quality state, determining a cell switching strategy to continue to comprehensively measure the channel quality of the target adjacent cell before the second condition is met;

if the moving speed state is the high-speed moving state and the channel quality state is a second channel quality state, determining that the cell switching strategy is to end the comprehensive measurement and switch from the serving cell to the target adjacent cell before the second condition is met;

if the moving speed state is the low-speed moving state and the channel quality state is the second channel quality state, determining that the cell switching strategy is to end the comprehensive measurement and switch from the serving cell to the target adjacent cell after the second condition is met;

the low-speed moving state is that the absolute value of the change is smaller than the preset change threshold, or the moving speed of the terminal equipment is smaller than the preset speed threshold;

the high-speed moving state is that the absolute value of the change is greater than or equal to the preset change threshold, or the moving speed of the terminal equipment is greater than or equal to the preset speed threshold;

the first channel quality state is that the channel quality of the serving cell is greater than or equal to the target threshold;

the second channel quality state is that the channel quality of the serving cell is less than the target threshold.

4. The method of claim 1, wherein the integrated measurements comprise measuring reference signal received power, RSRP, reference signal received quality, RSRQ, and signal to interference plus noise ratio, SINR, of neighboring cells.

5. The method of claim 4, wherein the performing the integrated measurement on the neighboring cell corresponding to each of the plurality of conditional handover configuration information to determine the target neighboring cell comprises:

measuring the RSRP, the RSRQ and the SINR of an adjacent cell corresponding to each of the conditional switch configuration information;

performing weighted average on the RSRP, the RSRQ and the SINR of each corresponding adjacent cell to obtain a comprehensive measurement result of each corresponding adjacent cell;

and taking an adjacent cell corresponding to the maximum item in the comprehensive measurement result of each respective corresponding adjacent cell as a target adjacent cell, or taking an adjacent cell corresponding to one item in a plurality of items which are larger than a preset comprehensive measurement result in the comprehensive measurement result of each respective corresponding adjacent cell as the target adjacent cell.

6. The method of claim 1, wherein the second condition is carried by a plurality of the conditional switch configuration information.

7. The method of claim 1, wherein the first condition is carried by measurement configuration information sent by a network.

8. A cell switching apparatus, comprising:

a measurement unit, configured to perform comprehensive measurement on one neighboring cell corresponding to each of the multiple pieces of conditional handover configuration information before a second condition is met to determine a target neighboring cell, where the second condition is a second event for triggering the terminal device to end the comprehensive measurement and handover out of the serving cell, the second event is that channel quality of the serving cell is greater than or equal to a second threshold, and the second threshold is smaller than the first threshold;

9. A terminal device comprising a processor, a memory and a computer program or instructions stored on the memory, wherein the processor executes the computer program or instructions to implement the steps of the method of any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that it stores a computer program or instructions which, when executed, implement the steps of the method of any one of claims 1-7.