CN113475118A

CN113475118A - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN113475118A
Application number: CN201980093063.7A
Authority: CN
Inventors: 杨宁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2021-10-01
Also published as: WO2021031189A1

Abstract

The embodiment of the application provides a wireless communication method and equipment, which realize compliance check aiming at configuration of cell switching. The method comprises the following steps: performing compliance check on the target cell configuration of a first CHO cell to be accessed in a plurality of Conditional Handover (CHO) cells; under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed is successful, switching from a source serving cell to the first CHO cell to be accessed based on a CHO switching mode; and in the case that the compliance check of the target cell configuration of the first CHO cell to be accessed fails, performing compliance check on the target cell configuration of a second CHO cell to be accessed in the plurality of CHO cells to determine whether to switch from the source serving cell to the second CHO cell to be accessed.

Description

Wireless communication method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a wireless communication method, terminal equipment and network equipment.

Background

At present, after receiving a Radio Resource Control (RRC) reconfiguration message, a terminal device performs compliance check (compliance check) on configuration in the RRC reconfiguration message, and if the terminal device can comply with the configuration included in the (compliance with) reconfiguration message, the terminal device replies an RRC reconfiguration complete message to a base station; if the terminal device is unable to comply with the configuration contained in the reconfiguration message, the terminal device triggers an RRC connection re-establishment procedure.

How to perform compliance check for the configuration of cell handover is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and equipment, which realize compliance check aiming at configuration of cell switching.

In a first aspect, a wireless communication method is provided, which is applied to a terminal device, and includes: performing compliance check on the target cell configuration of a first CHO cell to be accessed in a plurality of Conditional Handover (CHO) cells; under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed is successful, switching from a source serving cell to the first CHO cell to be accessed based on a CHO switching mode; and in the case that the compliance check of the target cell configuration of the first CHO cell to be accessed fails, performing compliance check on the target cell configuration of a second CHO cell to be accessed in the plurality of CHO cells to determine whether to switch from the source serving cell to the second CHO cell to be accessed.

In a second aspect, a wireless communication method is provided, which is applied to a terminal device, and the method includes: receiving a Radio Resource Control (RRC) message sent by network equipment, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell; performing compliance check on the handover condition configuration and the target cell configuration of the at least one CHO cell; and reporting an RRC response message to the network equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.

In a third aspect, a wireless communication method is provided, which is applied to a network device, and includes: sending a Radio Resource Control (RRC) message to a terminal device, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell; and receiving an RRC response message sent by the terminal equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.

In a fourth aspect, there is provided a communication device for performing the method of any of the first to third aspects above.

In particular, the communication device comprises functional means for performing the method of any of the first to third aspects described above.

In a fifth aspect, a communication device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method of any one of the first aspect to the third aspect.

In a sixth aspect, a chip is provided for implementing the method of any of the first to third aspects described above.

Specifically, the chip includes: a processor for calling and running the computer program from the memory so that the device on which the chip is installed performs the method of any of the first to third aspects described above.

In a seventh aspect, a computer-readable storage medium is provided for storing a computer program for causing a computer to perform the method of any of the first to third aspects described above.

In an eighth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any of the first to third aspects above.

In a ninth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any of the first to third aspects described above.

Therefore, in this embodiment of the present application, the terminal device may sequentially perform compliance check on the target cell configuration in the multiple CHO cells until the CHO cell configuration that passes the compliance check is determined and cell access is performed, so that compliance check on the target cell configuration in cell handover is achieved, and the problems of missing of other CHO cells caused by triggering RRC reestablishment when one CHO cell is unavailable, and data loss and long data interruption time caused by frequent RRC connection reestablishment are avoided, and the success probability of the terminal device accessing in the CHO is improved, and service continuity assurance is improved compared with the triggering connection reestablishment process.

Alternatively, in this embodiment of the present application, after the terminal device receives the RRC message sent by the network device, performing compliance check on the handover condition configuration of the CHO cell and the target cell configuration in the RRC message, and may indicate in the RRC response message the CHO cell for which the compliance check of the handover condition configuration and/or the target cell configuration failed, it can be avoided that in the presence of a CHO cell for which the compliance check of the handover condition configuration and the target cell configuration fails, namely, the RRC reestablishment procedure is triggered, so that the problems of data loss and long data interruption time caused by frequent RRC connection reestablishment can be avoided, and, and indicating the CHO cell with failed switching condition configuration and/or compliance check of the target cell configuration to the network equipment in the RRC response message, so that the network equipment can conveniently acquire the CHO cell with failed switching condition configuration and/or compliance check of the target cell configuration in time.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a Conditional Handover (CHO) Handover.

Fig. 3 is a schematic diagram of a wireless communication method provided in an embodiment of the present application.

Fig. 4 is a schematic diagram of a wireless communication method provided in an embodiment of the present application.

Fig. 5 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

With the pursuit of speed, delay, high-speed mobility, energy efficiency and the diversity and complexity of services in future life, the 3GPP international standards organization has begun to develop 5G for this purpose. The main application scenarios of 5G are: enhanced Mobile Ultra wide band (eMBB), Low-Latency high-reliability Communications (URLLC), and large-scale machine-type Communications (mMTC). The eMBB targets users for multimedia content, services, and data, and its demand is growing very rapidly. And because the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., and the difference between the capabilities and the requirements is relatively large, it cannot be said in a general way, and detailed analysis can be combined with a specific deployment scenario. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety, and the like. Typical characteristics of mtc include: high connection density, small data volume, insensitive time delay service, low cost and long service life of the module, etc.

For the problems of frequent switching and easy failure of switching in a high-speed mobile scene and a high-frequency deployment scene, a switching process based on condition triggering, namely CHO switching, can be adopted. The CHO switching can improve the switching robustness, the issuing of the normal condition switching configuration can not trigger the switching execution process immediately, and the terminal equipment can trigger the access of the condition switching only when the configured triggering condition is met.

Fig. 2 shows a schematic diagram of a CHO handover. 210 is a measurement configuration and reporting phase, specifically, the source base station may configure measurement to the terminal device, and based on the measurement configuration, the terminal device sends a target cell measurement result report to the source base station; 220 preparing a handover phase for HO, specifically, a source base station sends a handover request to a target base station, and the target base station may send a handover response to the source base station based on the handover request, where the handover response includes a target cell configuration; 230 sending the switching condition configuration and the target cell configuration to the terminal equipment for the source cell; 240 is that when the switching condition is satisfied, the terminal device uses the target cell configuration to access the target cell.

Optionally, in this embodiment of the present application, the handover condition configuration and the target cell configuration of the CHO cell (may also be referred to as a CHO candidate cell) may be carried in an RRC message, for example, an RRC reconfiguration message, or an RRC CHO reconfiguration message, or a CHO reconfiguration message. After receiving the RRC message, the terminal device may perform compliance check on the handover condition configuration and the target cell configuration in the RRC message, and if there is a handover condition configuration or a target cell configuration for which the compliance check fails, an RRC connection reestablishment process is triggered, and a frequent RRC connection reestablishment process may cause data loss and increase data interruption time.

Fig. 3 is a schematic flow chart diagram of a wireless communication method 300 according to an embodiment of the present application. As shown in fig. 3, the method 300 includes at least some of the following.

In 310, the terminal device performs a compliance check on a target cell configuration of a first CHO cell to be accessed from among the plurality of CHO cells.

In 320, in case that the compliance check of the target cell configuration of the first CHO cell to be accessed is successful, the first CHO cell to be accessed is handed over from the source serving cell based on the CHO handover manner.

In 330, in case the compliance check of the target cell configuration of the first CHO cell to be accessed fails, a compliance check is performed on the target cell configuration of a second CHO cell to be accessed of the plurality of CHO cells to determine whether to handover from the source serving cell to the second CHO cell to be accessed.

Specifically, in this embodiment of the present application, the terminal device may sequentially perform compliance check on the target cell configuration in the multiple CHO cells until the CHO cell configuration that passes the compliance check is determined and cell access is performed, so that compliance check on the target cell configuration in cell handover is achieved, and the problems of missing of other CHO cells caused by triggering RRC reestablishment when one CHO cell is unavailable, data loss and long data interruption time caused by frequent RRC connection reestablishment are avoided, and the success probability of access by the terminal device in the CHO is improved, and service continuity assurance is improved compared with the triggering connection reestablishment process.

Optionally, in this embodiment of the present application, in a case that the compliance check of the target cell configuration of each of the plurality of CHO cells fails, the RRC connection reestablishment procedure is triggered.

The handover condition of the CHO cell mentioned in the embodiments of the present application may also be referred to as a handover execution or trigger condition, and the handover condition configuration mainly indicates when the terminal device may handover to the CHO cell. For example, the handover condition configuration may indicate a first channel quality threshold between the terminal device and the source cell and a second channel quality threshold between the terminal device and the target cell, that is, when the channel quality between the terminal device and the source cell is less than the first channel quality threshold and/or the channel quality with the CHO cell is greater than the second channel quality threshold, the terminal device may handover to the CHO cell. Wherein the channel quality can be obtained through RRM measurement.

The target cell configuration mentioned in the embodiments of the present application may indicate parameters, such as a transmission beam and a scrambling scheme, used when and/or after accessing the CHO cell.

Optionally, in this embodiment of the present application, the handover condition configurations of different CHO cells may be the same or different. The network device may configure the handover condition configuration for each CHO cell, and the handover condition configurations configured for different CHO cells may be the same or different. The handover condition configuration of the CHO cell may be generated by the source base station. Alternatively, the network device may also configure the handover condition configuration for the CHO cell in a unified manner, that is, one configured handover condition configuration is applicable to all CHO cells.

The successful compliance check of the handover condition configuration of the CHO cell may mean that the terminal device can comply with the handover condition configuration, that is, when the handover condition indicated by the handover condition configuration is satisfied, the terminal device can access the CHO cell.

Similarly, a failure of compliance check of the handover condition configuration of the CHO cell may mean that the terminal device cannot comply with the handover condition configuration, that is, the terminal device cannot access the CHO cell when the handover condition indicated by the handover condition configuration is satisfied.

Optionally, in this embodiment of the present application, the target cell configurations of different CHO cells may be the same or different. The network device may configure the target cell configuration for each CHO cell, and the target cell configurations configured for different CHO cells may be the same or different. The target cell configuration of the CHO cell may be generated by the target base station and transmitted to the terminal device via the source base station.

The successful compliance check of the target cell configuration of the CHO cell may refer to that the terminal device can comply with the target cell configuration, that is, the terminal device may access the CHO cell by using the target cell configuration and/or communicate with the CHO cell after accessing the CHO cell.

Similarly, a failure of compliance check of a target cell configuration of a CHO cell may mean that the terminal device is unable to comply with the target cell configuration, that is, the terminal device is unable to access the CHO cell and/or communicate with the CHO cell after accessing the CHO cell with the target cell configuration.

As mentioned above, the compliance check is performed on the target cell configuration, and optionally, in this embodiment, the terminal device may perform the compliance check on the handover condition configuration.

Specifically, after receiving an RRC message (e.g., an RRC reconfiguration message) sent by the network device, the terminal device may perform compliance check on the handover condition configuration in the RRC message.

Optionally, in this embodiment of the present application, the first CHO cell to be accessed and/or the second CHO cell to be accessed are cells that are checked by compliance configured by a handover condition.

In this embodiment, the terminal device may perform compliance check on the configured handover condition configurations of all CHO cells.

Alternatively, in this embodiment of the present application, the terminal device may also perform compliance check on part of configured CHO cells, for example, after determining that a certain number of handover conditions configure compliant CHO cells, a CHO cell may be selected for access.

Optionally, in this embodiment of the present application, the compliance check result configured for the handover condition of the CHO cell may be used by the terminal device to determine whether to trigger the RRC connection reestablishment procedure.

Optionally, in this embodiment of the present application, the compliance check result configured for the handover condition of the CHO cell may also be used for the terminal device to determine a mode adopted for selecting the cell to be accessed.

Specifically, the terminal device may perform compliance check on the handover condition configuration of each of the plurality of CHO cells; determining a mode for selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to a compliance check result configured by the switching condition; and selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to the determined mode.

In the embodiment of the present application, the cell to be accessed may be determined based on a cell selection S criterion (that is, a Reference Signal Receiving Power (RSRP) measurement value of the target cell satisfies a minimum threshold value for cell selection), or determined based on a handover condition of a CHO cell.

When performing cell selection based on the cell selection S criteria, the candidate cells may include CHO cells and may also include non-CHO cells. And in case that the CHO cell to be accessed is determined based on the handover condition of the CHO cell, the candidate cell includes the CHO cell and does not include the non-CHO cell.

Optionally, in this embodiment of the present application, the terminal device may report, to the network device, a compliance check result configured by the handover conditions of the multiple CHO cells. Wherein the compliance check result of the handover condition configuration is optionally used to indicate a CHO cell of the plurality of CHO cells in which the compliance check of the handover condition configuration failed; and/or a CHO cell of the plurality of CHO cells for which compliance checking of handover condition configuration is successful.

The compliance check result is optionally carried in an RRC response message, for example, an RRC reconfiguration complete message.

Optionally, in this embodiment of the present application, when the cell to be accessed is a CHO cell, if the compliance check of the target cell configuration of the CHO cell to be accessed is successful, a CHO handover mode may be used to perform cell access, and at this time, the cell to be accessed may be determined based on a cell selection S criterion or may be determined based on a handover condition of the CHO cell.

Optionally, in this embodiment of the present application, in a case that the cell selected based on the cell selection S criterion is not a CHO cell, the cell handover may be performed without using a CHO handover.

Optionally, in this embodiment of the present application, in a case that the cell selected based on the cell selection S criterion is not a CHO cell, the terminal device may trigger an RRC connection reestablishment procedure.

Optionally, in an implementation, if the handover condition configuration of all CHO cells in the RRC message cannot be complied with by the terminal device, the terminal device may initiate an RRC connection reestablishment procedure to the network device.

This means that the terminal device does not need to initiate an RRC re-establishment procedure to the network device if there is at least one handover condition of the CHO cell in the RRC message configuring the terminal device to be able to comply with. In this case, the available CHO cells may include a CHO cell in which the handover condition configuration compliance check fails (for example, in a case where a cell is selected based on the cell selection S criterion), or may not include a CHO cell in which the handover condition configuration compliance check fails (for example, in a case where a CHO cell to be accessed is determined based on the handover condition of the CHO cell).

Alternatively, in another implementation, if there is at least one handover condition of the CHO cell in the RRC message that the terminal device is not configured to comply with, the terminal device may initiate an RRC reestablishment procedure to the network device.

This means that if the handover condition configuration of all CHO cells in the RRC message is complied with by the terminal device, the terminal device does not need to initiate an RRC reestablishment procedure to the network device. In this case, the available CHO cells may include all CHO cells.

Alternatively, in another implementation manner, even if the handover condition configuration of all CHO cells in the RRC message cannot be complied with by the terminal device, the terminal device may not need to initiate an RRC reestablishment procedure to the network device. In this case, the available CHO cells may include all CHO cells.

For a more clear understanding of the present application, several ways of selecting the first CHO cell to be accessed will be described below. The first CHO cell to be accessed according to the embodiment of the present application may be a CHO cell to be accessed which is determined for the first time after receiving the RRC message.

In implementation 1A, in a case where the compliance check of the handover condition configuration of each of the plurality of CHO cells is successful, the first CHO cell to be accessed is determined according to the handover condition of each of the plurality of CHO cells.

Specifically, the terminal device may perform compliance check on the handover condition configuration of each CHO cell in the RRC message when receiving the RRC message, and if the compliance check on the handover condition configuration of all CHO cells is successful, the terminal device may determine, according to the handover condition of each CHO cell, the CHO cell whose handover condition is satisfied as the first CHO cell to be accessed without triggering the RRC connection reestablishment process. The RRC connection re-establishment procedure may be triggered if the compliance check of the handover condition configuration of not all CHO cells is successful.

In implementation 1B, when a CHO cell in which compliance check configured for the handover condition succeeds exists in the plurality of CHO cells, the first CHO cell to be accessed is determined according to the handover condition of the CHO cell in which compliance check configured for the handover condition succeeds.

Specifically, the terminal device may perform compliance check on the handover condition configuration of each CHO cell in the RRC message when receiving the RRC message, and if there is a CHO cell for which the compliance check of the handover condition configuration is successful, the terminal device may determine a first CHO cell to be accessed without triggering an RRC reestablishment process. Specifically, the terminal device may determine, as the first CHO cell to be accessed, a CHO cell in which the handover condition is satisfied among the CHO cells in which the compliance check of the handover condition configuration is successful. Alternatively, the terminal device may also determine the first CHO cell to be accessed based on the cell selection S criterion. The RRC reestablishment procedure may be triggered if the compliance check of the handover condition configuration of all CHO cells is not successful.

In implementation 1C, in a case where the compliance check of the handover condition configuration of each of the plurality of CHO cells fails, the first CHO cell to be accessed is determined based on a cell selection S criterion.

Specifically, the terminal device may perform compliance check on the handover condition configuration of each CHO cell in the RRC message when receiving the RRC message, and if the compliance check on the handover condition configuration of all the CHO cells fails, the terminal device may determine the first CHO cell to be accessed based on the cell selection S criterion. In this case, the RRC connection reestablishment procedure is not triggered by a failure of the compliance check of the handover condition. If the cell selected by the terminal device is not a CHO cell, cell access can be performed based on the selected cell, and an RRC connection reestablishment procedure can also be triggered.

In implementation 1D, in a case where there is a CHO cell in the plurality of CHO cells for which compliance check of handover condition configuration fails, the first CHO cell to be accessed is determined based on a cell selection S criterion.

Specifically, the terminal device may perform compliance check on the handover condition configuration of each CHO cell in the RRC message in the case that the RRC message is received, and if there is a CHO cell for which the compliance check of the handover condition configuration fails, the terminal device may determine a first CHO cell to be accessed based on the cell selection S criterion. If the cell selected by the terminal device is not a CHO cell, cell access can be performed based on the selected cell, and an RRC connection reestablishment procedure can also be triggered.

It is to be understood that the above implementations 1A to 1D may be used in combination, for example, 1A and 1C may be used in combination, 1A and 1D may be used in combination, and the like.

The above describes the determination of the first CHO cell to be accessed and the following describes the determination of the second CHO cell to be accessed.

In one implementation, in case of failure of compliance check of a target cell configuration of the first CHO cell to be accessed, the second CHO cell to be accessed is determined based on a cell selection S-criterion.

Specifically, when compliance check configured for a target cell of a certain CHO cell fails, subsequent cells to be accessed may all determine a CHO cell to be accessed based on a cell S criterion. If the cell selected by the terminal device is not a CHO cell, cell access can be performed based on the selected cell, and an RRC connection reestablishment procedure can also be triggered.

In one implementation manner, in the case that the compliance check configured for the target cell of the first CHO cell to be accessed fails, the second CHO cell to be accessed is determined according to the handover condition of the CHO cell, which is not the first CHO cell to be accessed and has the successful compliance check configured for the handover condition, among the plurality of CHO cells.

Specifically, in the case that compliance check of target cell configuration of a certain CHO cell fails, the subsequent cell to be accessed may determine a CHO cell to be accessed from other CHO cells except for the failure of compliance check of target cell configuration and the failure of compliance check of handover condition configuration.

In one implementation, in the case that the target cell configuration compliance check of the first CHO cell to be accessed fails, the second CHO cell to be accessed is determined according to the handover conditions of the CHO cells except the first CHO cell to be accessed among the plurality of CHO cells.

Specifically, in the case that compliance check of target cell configuration of a certain CHO cell fails, a subsequent cell to be accessed may determine a CHO cell to be accessed from CHO cells other than the CHO cell in which compliance check of target cell configuration fails. In this implementation, the RRC connection reestablishment procedure may not be triggered until all the handover condition configurations of the CHO cells are successful.

Optionally, in this embodiment of the present application, the terminal device may report, to the network device, a compliance check result configured by a target cell of the first CHO cell to be accessed and/or the second CHO cell to be accessed; wherein the compliance check result of the target cell configuration is used to indicate whether the compliance check of the target cell configuration of the first CHO cell to be accessed and/or the second CHO cell to be accessed is successful.

In order to more clearly understand the present application, the method 300 will be described below with reference to example 1 and example 2.

Example 1:

step 1: the serving cell base station configures one or more CHO cells for the terminal equipment through RRC messages (such as RRC reconfiguration messages), wherein each CHO cell comprises target cell configuration generated by a target cell and switching condition configuration generated by the serving cell;

step 2: and the terminal equipment immediately performs compliance check of switching condition configuration after receiving the RRC message.

If the terminal equipment can comply with the handover execution condition configuration (i.e. pass the compliance check), the terminal equipment sends an RRC response message to the serving cell base station;

if the terminal device is unable to comply with the handover condition (i.e., the compliance check fails), the terminal device triggers an RRC connection reestablishment procedure.

And step 3: if the terminal device configures the compliance check through the handover condition, the terminal device performs Radio Resource Management (RRM) measurement according to the received handover condition to evaluate whether the CHO cell meets the handover condition.

And 4, step 4: if the UE evaluates that a CHO cell satisfies the configured handover conditions, the terminal device starts compliance checking of the target cell configuration in the CHO configuration.

If the compliance check of the target cell configuration of the CHO cell passes, the terminal equipment executes a CHO switching process to the CHO cell;

the terminal device does not immediately trigger the RRC connection re-establishment procedure if the compliance check of the target cell configuration of the CHO cell fails. At this time, the terminal equipment judges whether other CHO cells also meet the switching condition;

if no other CHO cell meets the switching condition, the terminal equipment triggers the RRC connection reestablishment process;

performing a compliance check on the target cell configuration of the other CHO cells if the other CHO cells also satisfy the handover condition

If one CHO cell meeting the switching condition passes the compliance check configured by the target cell, the terminal equipment initiates a CHO access process to the CHO cell;

the terminal device triggers a connection re-establishment procedure if none of the plurality of CHO cells satisfying the handover condition passes the compliance check configured by the target cell.

In this embodiment 1, when the handover condition is satisfied, the compliance check of the target cell configuration is performed on the CHO cell satisfying the handover condition, so that the compliance check on irrelevant CHO cells is avoided, and unnecessary RRC connection reestablishment procedure is avoided from being triggered when the compliance check fails, thereby reducing data loss. Meanwhile, when the compliance check fails, the RRC connection reestablishment is not triggered immediately, but the compliance check is continuously carried out on other CHO cells meeting the triggering condition, so that the success probability of the access of the terminal equipment in the CHO can be improved, and the service continuity guarantee is improved compared with the triggering connection reestablishment process.

Example 2

Step 1: the serving cell base station configures one or more CHO cells for the terminal equipment through RRC messages (such as RRC reconfiguration messages), wherein each CHO cell contains target cell configuration generated by the target cell and switching condition configuration generated by the serving cell.

If the UE can comply with the switching condition configuration (i.e. pass the compliance check), the terminal equipment sends an RRC response message to the serving cell base station;

if the UE fails to comply with the handover condition configuration (i.e., the compliance check fails), the terminal device triggers an RRC connection reestablishment procedure.

And step 3: if the terminal device passes the compliance check of the handover condition configuration, the terminal device may perform RRM measurements to evaluate whether the CHO cell satisfies the handover condition according to the received handover condition configuration.

And 4, step 4: if the terminal equipment evaluates that a CHO cell meets the configured handover conditions, the terminal equipment starts to perform a target cell configuration compliance check in the CHO configuration.

The terminal device performs a CHO handover procedure to the CHO cell if the target cell configuration compliance check of the CHO cell passes.

If the target cell configuration compliance check of the CHO cell fails, the terminal equipment can consider that the CHO access of the CHO cell fails, and the terminal equipment starts a cell selection process;

if the selected cell is other CHO cells, the terminal equipment carries out target cell configuration compliance check on the selected CHO cell; if the compliance check configured by the target cell passes, the terminal equipment accesses to a newly selected CHO cell in a CHO access mode; if the compliance check of the target cell configuration fails, the terminal equipment considers that the CHO access of the newly selected CHO cell fails, and continues to start the cell selection process. If the selected cell is not a CHO cell, the UE triggers a connection re-establishment procedure.

In embodiment 2, the same beneficial effects and benefits as those of embodiment 1 can be obtained, and besides, the handover condition is bypassed by means of cell selection (i.e. the S-criteria for cell selection, i.e. the RSRP measurement value of the target cell meets the minimum threshold value for cell selection) to access the CHO candidate cell, so that the resources of the CHO candidate cell are utilized to a greater extent, and the probability of successful access is improved.

Fig. 4 is according to the present application. A schematic flow chart diagram of a method 400 of wireless communication of an embodiment. The method 400 includes at least some of the following.

In 410, the network device sends an RRC message to the terminal device, the RRC message including a handover condition configuration and a target cell configuration of at least one conditional handover CHO cell. The RRC message may be an RRC reconfiguration message, an RRC CHO reconfiguration message, or a CHO reconfiguration message.

In 420, the terminal device receives a radio resource control RRC message sent by the network device, where the RRC message includes a handover condition configuration and a target cell configuration of at least one conditional handover CHO cell.

In 430, the terminal device performs compliance checking on the handover condition configuration and/or the target cell configuration of the at least one CHO cell.

In 440, the terminal device reports an RRC response message to the network device, where the RRC response message indicates the CHO cell in which the handover condition configuration compliance check fails and/or the CHO cell in which the target cell configuration compliance check fails. The RRC response message may be an RRC reconfiguration complete message, an RRC CHO reconfiguration complete message, or a CHO reconfiguration complete message.

Specifically, the terminal device sends an RRC response message according to the handover condition configuration of the at least one CHO cell and/or the compliance check result of the target cell configuration.

For example, if there is a CHO cell in which compliance check of the handover condition configuration and/or the target cell configuration fails among the at least one CHO cell, the CHO cell may be indicated in the RRC response message, and it may be further indicated whether the compliance check fails is the handover condition configuration, the target cell configuration, or the handover condition configuration and the target cell configuration.

Optionally, the terminal device may delete, from the at least one CHO cell, a CHO cell in which the handover condition configuration compliance check fails and/or a CHO cell in which the target cell configuration compliance check fails.

That is, the terminal device may not perform evaluation of the handover condition for the deleted CHO cell.

In 450, the network device receives an RRC response message sent by the terminal device, where the RRC response message indicates a CHO cell in which the handover condition configuration compliance check fails and/or a CHO cell in which the target cell configuration compliance check fails.

Optionally, in this embodiment of the present application, after receiving the RRC response message, the network device performs at least one of the following operations:

updating the CHO cell configured for the terminal equipment;

updating the switching condition configuration of the CHO cell which fails in the switching condition configuration compliance check;

and updating the target cell switching configuration of the CHO cell with the failure of the target cell configuration compliance check.

Therefore, in the embodiment of the present application, after receiving the RRC complete message, the network device may update the configuration of the CHO cell in time, so as to increase the probability of CHO access.

The method 400 in the examples of the present application is described below by taking example 3 as an example.

Example 3

step 2: and the terminal equipment immediately performs compliance check of switching condition configuration and target cell configuration after receiving the RRC.

If the terminal device can comply with the handover condition configuration and the target cell configuration at the same time (i.e., pass the compliance check), the terminal device sends an RRC response message to the serving cell base station.

If the terminal device cannot comply with the handover condition configuration and/or the target cell configuration of a certain CHO cell (i.e., the compliance check fails), the terminal device does not trigger the RRC connection re-establishment procedure. The behavior of the terminal device may be: the terminal device deletes the CHO cell, i.e., the terminal device does not evaluate the handover condition corresponding to the CHO cell. Further terminal equipment may send an RRC response message to the network equipment indicating:

the terminal equipment cannot comply with the switching condition configuration of the CHO cell: or

The terminal equipment cannot comply with the target cell configuration of the CHO cell; or

The terminal equipment cannot comply with the handover condition configuration and the target cell configuration of the CHO cell.

In this embodiment 3, the failure of the CHO configuration compliance check does not trigger the RRC connection reestablishment procedure, but reports the configuration (handover condition configuration and/or target cell configuration) of the compliance check failure on the network side, so that the serving cell can update the new CHO candidate cell and its related configuration in time based on the implementation. The success probability of the CHO access is increased by configuring a new compliance cell.

It should be understood that, in the embodiment of the present application, if a CHO cell in which the handover condition configuration and/or the compliance check of the target cell configuration fails exists in at least one CHO cell, the terminal device may delete the CHO cell in which the handover condition configuration compliance check fails and/or the CHO cell in which the compliance check of the target cell configuration fails, without indicating the deleted CHO cell in the RRC response message.

It should also be understood that the description in the method 300 may be applied to the method 400, for example, the description on the handover condition configuration and the target cell configuration, etc., and therefore, for brevity, the description is not repeated herein.

Also, the method 400 and the method 300 may be used in combination, i.e. the terminal device may perform the method 300 and the method 400 simultaneously.

In the embodiment of the present application, therefore, after the terminal device receives the RRC message sent by the network device, performing compliance check on the handover condition configuration of the CHO cell and the target cell configuration in the RRC message, and may indicate in the RRC response message the CHO cell for which the compliance check of the handover condition configuration and/or the target cell configuration failed, it can be avoided that in the presence of a CHO cell for which the compliance check of the handover condition configuration and the target cell configuration fails, namely, the RRC reestablishment procedure is triggered, so that the problems of data loss and long data interruption time caused by frequent RRC connection reestablishment can be avoided, and, and indicating the CHO cell with failed switching condition configuration and/or compliance check of the target cell configuration to the network equipment in the RRC response message, so that the network equipment can conveniently acquire the CHO cell with failed switching condition configuration and/or compliance check of the target cell configuration in time.

Fig. 5 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. As shown in fig. 5, the terminal device 500 includes a processing unit 510.

Wherein the processing unit 510 is configured to: performing compliance check on the target cell configuration of a first CHO cell to be accessed in a plurality of Conditional Handover (CHO) cells; under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed is successful, switching from a source serving cell to the first CHO cell to be accessed based on a CHO switching mode; and in the case that the compliance check of the target cell configuration of the first CHO cell to be accessed fails, performing compliance check on the target cell configuration of a second CHO cell to be accessed in the plurality of CHO cells to determine whether to switch from the source serving cell to the second CHO cell to be accessed.

Optionally, in this embodiment of the present application, the processing unit 510 is further configured to:

performing a compliance check on the handover condition configuration of each of the plurality of CHO cells;

determining a mode for selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to a compliance check result configured by the switching condition;

and selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to the determined mode.

and under the condition that the compliance check configured by the switching condition of each CHO cell in the plurality of CHO cells is successful, determining the first CHO cell to be accessed according to the switching condition of each CHO cell in the plurality of CHO cells.

and when a CHO cell with successful compliance check configured by the switching condition exists in the plurality of CHO cells, determining the first CHO cell to be accessed according to the switching condition of the CHO cell with successful compliance check configured by the switching condition.

determining the first CHO cell to be accessed based on a cell selection S criterion when compliance checking of handover condition configuration of each CHO cell of the plurality of CHO cells fails.

determining the first CHO cell to be accessed based on a cell selection S criterion in the case that a CHO cell failing a compliance check of a handover condition configuration exists among the plurality of CHO cells.

determining the second CHO cell to be accessed based on a cell selection S criterion under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed fails.

and when the compliance check configured by the target cell of the first CHO cell to be accessed fails, determining the second CHO cell to be accessed according to the switching condition of the CHO cells which are except the first CHO cell to be accessed and have successful compliance check configured by the switching condition.

and under the condition that the target cell configuration compliance check of the first CHO cell to be accessed fails, determining the second CHO cell to be accessed according to the switching conditions of the CHO cells except the first CHO cell to be accessed in the plurality of CHO cells.

as shown in fig. 5, the terminal device 500 further includes a communication unit 520 configured to: reporting compliance checking results configured by the switching conditions of the plurality of CHO cells to network equipment;

wherein the compliance check result of the handover condition configuration is used to indicate a CHO cell of the plurality of CHO cells in which the compliance check of the handover condition configuration fails; and/or a CHO cell of the plurality of CHO cells for which compliance checking of handover condition configuration is successful.

Optionally, in this embodiment of the present application, as shown in fig. 5, the terminal device 500 further includes a communication unit 520, configured to:

reporting a compliance check result configured by a target cell of the first CHO cell to be accessed and/or the second CHO cell to be accessed to network equipment;

wherein the compliance check result of the target cell configuration is used to indicate whether the compliance check of the target cell configuration of the first CHO cell to be accessed and/or the second CHO cell to be accessed is successful.

triggering an RRC connection reestablishment procedure in case compliance checking of the target cell configuration of each of the plurality of CHO cells fails.

It should be understood that the terminal device 500 may be configured to implement the corresponding operations implemented by the terminal device in the foregoing method embodiments, and for brevity, the description is not repeated here.

Fig. 6 is a schematic block diagram of a terminal device 600 according to an embodiment of the present application. The terminal device 600 includes a communication unit 610 and a processing unit 620.

The communication unit 610 is configured to: receiving a Radio Resource Control (RRC) message sent by network equipment, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell;

the processing unit 620 is configured to: performing compliance check on the handover condition configuration and the target cell configuration of the at least one CHO cell;

the communication unit 610 is further configured to: and reporting an RRC response message to the network equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.

Optionally, in this embodiment of the present application, the processing unit 620 is further configured to:

and deleting the CHO cell with the switching condition configuration compliance check failure and/or the CHO cell with the target cell configuration compliance check failure from the at least one CHO cell.

It should be understood that the terminal device 600 may be configured to implement the corresponding operations implemented by the terminal device in the foregoing method embodiments, and for brevity, no further description is provided here.

Fig. 7 is a schematic block diagram of a network device 700 according to an embodiment of the present application. The network device 700 includes a communication unit 710.

Wherein the communication unit 710 is configured to:

sending a Radio Resource Control (RRC) message to a terminal device, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell;

and receiving an RRC response message sent by the terminal equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.

Optionally, in this embodiment of the present application, the communication unit 710 is further configured to:

performing at least one of the following operations:

updating the CHO cell configured for the terminal equipment;

It should be understood that the network device 700 may be configured to implement the corresponding operations implemented by the network device in the foregoing method embodiments, and for brevity, the description is not repeated here.

Fig. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application. The communication device 800 shown in fig. 8 comprises a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 8, the communication device 800 may also include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, as shown in fig. 8, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 830 may include a transmitter and a receiver, among others. The transceiver 830 may further include one or more antennas.

Optionally, the communication device 800 may specifically be a network device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 800 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 800 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 9 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 900 shown in fig. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the chip 900 may further include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, the chip 900 may further comprise an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 900 may further include an output interface 940. The processor 910 may control the output interface 940 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A wireless communication method is applied to a terminal device, and is characterized by comprising the following steps:

performing compliance check on the target cell configuration of a first CHO cell to be accessed in a plurality of Conditional Handover (CHO) cells;

under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed is successful, switching from a source serving cell to the first CHO cell to be accessed based on a CHO switching mode;

and in the case that the compliance check of the target cell configuration of the first CHO cell to be accessed fails, performing compliance check on the target cell configuration of a second CHO cell to be accessed in the plurality of CHO cells to determine whether to switch from the source serving cell to the second CHO cell to be accessed.
The method of claim 1,

the first CHO cell to be accessed and/or the second CHO cell to be accessed are cells which pass compliance check configured by a handover condition.
The method according to claim 1 or 2, characterized in that the method further comprises:

performing a compliance check on the handover condition configuration of each of the plurality of CHO cells;

determining a mode for selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to a compliance check result configured by the switching condition;

and selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to the determined mode.
The method according to any one of claims 1 to 3, further comprising:

and under the condition that the compliance check configured by the switching condition of each CHO cell in the plurality of CHO cells is successful, determining the first CHO cell to be accessed according to the switching condition of each CHO cell in the plurality of CHO cells.
The method according to any one of claims 1 to 3, further comprising:

and when a CHO cell with successful compliance check configured by the switching condition exists in the plurality of CHO cells, determining the first CHO cell to be accessed according to the switching condition of the CHO cell with successful compliance check configured by the switching condition.
The method according to any one of claims 1 to 3, further comprising:

determining the first CHO cell to be accessed based on a cell selection S criterion when compliance checking of handover condition configuration of each CHO cell of the plurality of CHO cells fails.
The method according to any one of claims 1 to 3, further comprising:

determining the first CHO cell to be accessed based on a cell selection S criterion in the case that a CHO cell failing a compliance check of a handover condition configuration exists among the plurality of CHO cells.
The method according to any one of claims 1 to 7, further comprising:

determining the second CHO cell to be accessed based on a cell selection S criterion under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed fails.
The method according to any one of claims 1 to 7, further comprising:

and when the compliance check configured by the target cell of the first CHO cell to be accessed fails, determining the second CHO cell to be accessed according to the switching condition of the CHO cells which are except the first CHO cell to be accessed and have successful compliance check configured by the switching condition.
The method according to any one of claims 1 to 7, further comprising:

and under the condition that the target cell configuration compliance check of the first CHO cell to be accessed fails, determining the second CHO cell to be accessed according to the switching conditions of the CHO cells except the first CHO cell to be accessed in the plurality of CHO cells.
The method according to any one of claims 1 to 10, further comprising:

performing a compliance check on the handover condition configuration of each of the plurality of CHO cells;

reporting compliance checking results configured by the switching conditions of the plurality of CHO cells to network equipment;

wherein the compliance check result of the handover condition configuration is used for indicating a CHO cell of the plurality of CHO cells in which the compliance check of the handover condition configuration fails; and/or a CHO cell of the plurality of CHO cells for which compliance checking of handover condition configuration is successful.
The method according to any one of claims 1 to 11, further comprising:

reporting a compliance check result configured by a target cell of the first CHO cell to be accessed and/or the second CHO cell to be accessed to network equipment;

wherein the compliance check result of the target cell configuration is used to indicate whether the compliance check of the target cell configuration of the first CHO cell to be accessed and/or the second CHO cell to be accessed is successful.
The method according to any one of claims 1 to 12, further comprising:

triggering an RRC connection reestablishment procedure in case compliance checking of the target cell configuration of each of the plurality of CHO cells fails.
A wireless communication method applied to a terminal device is characterized by comprising the following steps:

receiving a Radio Resource Control (RRC) message sent by network equipment, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell;

performing compliance check on the handover condition configuration and/or the target cell configuration of the at least one CHO cell;

and reporting an RRC response message to the network equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.
The method of claim 14, further comprising:

and deleting the CHO cell with the switching condition configuration compliance check failure and/or the CHO cell with the target cell configuration compliance check failure from the at least one CHO cell.
A wireless communication method applied to a network device, the method comprising:

sending a Radio Resource Control (RRC) message to a terminal device, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell;

and receiving an RRC response message sent by the terminal equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.
The method of claim 16, further comprising:

performing at least one of the following operations:

updating the CHO cell configured for the terminal equipment;

updating the switching condition configuration of the CHO cell which fails in the switching condition configuration compliance check;

and updating the target cell switching configuration of the CHO cell with the failure of the target cell configuration compliance check.
A terminal device, comprising a processing unit configured to:

performing compliance check on the target cell configuration of a first CHO cell to be accessed in a plurality of Conditional Handover (CHO) cells;

under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed is successful, switching from a source serving cell to the first CHO cell to be accessed based on a CHO switching mode;

and in the case that the compliance check of the target cell configuration of the first CHO cell to be accessed fails, performing compliance check on the target cell configuration of a second CHO cell to be accessed in the plurality of CHO cells to determine whether to switch from the source serving cell to the second CHO cell to be accessed.
The terminal device of claim 18,

the first CHO cell to be accessed and/or the second CHO cell to be accessed are cells which pass compliance check configured by a handover condition.
The terminal device of claim 18 or 19, wherein the processing unit is further configured to:

performing a compliance check on the handover condition configuration of each of the plurality of CHO cells;

determining a mode for selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to a compliance check result configured by the switching condition;

and selecting the first CHO cell to be accessed and/or the second CHO cell to be accessed according to the determined mode.
The terminal device of any of claims 18-20, wherein the processing unit is further configured to:

and under the condition that the compliance check configured by the switching condition of each CHO cell in the plurality of CHO cells is successful, determining the first CHO cell to be accessed according to the switching condition of each CHO cell in the plurality of CHO cells.
The terminal device of any of claims 18-20, wherein the processing unit is further configured to:

and when a CHO cell with successful compliance check configured by the switching condition exists in the plurality of CHO cells, determining the first CHO cell to be accessed according to the switching condition of the CHO cell with successful compliance check configured by the switching condition.
The terminal device of any of claims 18-20, wherein the processing unit is further configured to:

determining the first CHO cell to be accessed based on a cell selection S criterion when compliance checking of handover condition configuration of each CHO cell of the plurality of CHO cells fails.
The terminal device of any of claims 18-20, wherein the processing unit is further configured to:

determining the first CHO cell to be accessed based on a cell selection S criterion in the case that a CHO cell failing a compliance check of a handover condition configuration exists among the plurality of CHO cells.
The terminal device of any of claims 18-24, wherein the processing unit is further configured to:

determining the second CHO cell to be accessed based on a cell selection S criterion under the condition that the compliance check of the target cell configuration of the first CHO cell to be accessed fails.
The terminal device of any of claims 18-24, wherein the processing unit is further configured to:

and when the compliance check configured by the target cell of the first CHO cell to be accessed fails, determining the second CHO cell to be accessed according to the switching condition of the CHO cells which are except the first CHO cell to be accessed and have successful compliance check configured by the switching condition.
The terminal device of any of claims 18-24, wherein the processing unit is further configured to:

and under the condition that the target cell configuration compliance check of the first CHO cell to be accessed fails, determining the second CHO cell to be accessed according to the switching conditions of the CHO cells except the first CHO cell to be accessed in the plurality of CHO cells.
The terminal device of any of claims 18-27, wherein the processing unit is further configured to:

performing a compliance check on the handover condition configuration of each of the plurality of CHO cells;

the terminal device further includes a communication unit configured to: reporting compliance checking results configured by the switching conditions of the plurality of CHO cells to network equipment;

wherein the compliance check result of the handover condition configuration is used to indicate a CHO cell of the plurality of CHO cells in which the compliance check of the handover condition configuration fails; and/or a CHO cell of the plurality of CHO cells for which compliance checking of handover condition configuration is successful.
The terminal device according to any of claims 18 to 28, wherein the terminal device further comprises a communication unit configured to:

reporting a compliance check result configured by a target cell of the first CHO cell to be accessed and/or the second CHO cell to be accessed to network equipment;

wherein the compliance check result of the target cell configuration is used to indicate whether the compliance check of the target cell configuration of the first CHO cell to be accessed and/or the second CHO cell to be accessed is successful.
The terminal device of any of claims 18-29, wherein the processing unit is further configured to:

triggering an RRC connection reestablishment procedure in case compliance checking of the target cell configuration of each of the plurality of CHO cells fails.
A terminal device, comprising a processing unit and a communication unit, wherein,

the communication unit is configured to: receiving a Radio Resource Control (RRC) message sent by network equipment, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell;

the processing unit is configured to: performing compliance check on the handover condition configuration and/or the target cell configuration of the at least one CHO cell;

the communication unit is further configured to: and reporting an RRC response message to the network equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.
The terminal device of claim 31, wherein the processing unit is further configured to:

and deleting the CHO cell with the switching condition configuration compliance check failure and/or the CHO cell with the target cell configuration compliance check failure from the at least one CHO cell.
A network device, comprising a communication unit configured to:

sending a Radio Resource Control (RRC) message to a terminal device, wherein the RRC message comprises switching condition configuration and target cell configuration of at least one conditional switching (CHO) cell;

and receiving an RRC response message sent by the terminal equipment, wherein the RRC response message indicates the CHO cell with the failure of the switching condition configuration compliance check and/or the CHO cell with the failure of the target cell configuration compliance check.
The network device of claim 33, wherein the communication unit is further configured to:

performing at least one of the following operations:

updating the CHO cell configured for the terminal equipment;

updating the switching condition configuration of the CHO cell which fails in the switching condition configuration compliance check;

and updating the target cell switching configuration of the CHO cell with the failure of the target cell configuration compliance check.
A communication device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 17.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 17.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 17.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 17.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1-17.