Wireless communication method, terminal device and network device

Abstract

The application of the invention is a divisional application of 202080101953.0. Provided are a wireless communication method, a terminal device and a network device, the terminal device being capable of reporting that an RLF has occurred in a source cell in a DAPS handover process, so that the network device can optimize a threshold corresponding to a measurement event in a measurement configuration, thereby ensuring the effectiveness of subsequent DAPS handover configuration, and optimizing DAPS handover. The wireless communication method comprises: a terminal device sends first indication information to a network device, the first indication information being used for indicating that an RLF occurs between the terminal device and a source cell in a process of switching the terminal device from the source cell to a target cell by using a DAPS switching mode, the network device being a network device of the target cell, or the first indication information being used for indicating that the RLF occurs between the terminal device and the source cell in a process of switching the terminal device from the source cell to the target cell. The network device is a network device of a cell reestablished after the DAPS switching fails, or the network device is a network device of the source cell.

Description

[0001] This application is a divisional application of the invention patent application with the application date of July 6, 2020, application number 202080101953.0, and invention name “Wireless Communication Method, Terminal Equipment and Network Equipment”. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, a terminal device, and a network device. Background Art

[0003] In the New Radio (NR) and Long Term Evolution (LTE) systems, the dual active protocol stack (DAPS) is introduced to optimize the handover process to reduce the interruption time during the handover process. However, at this stage, it does not involve how to handle the source cell radio link failure (RLF) during the DAPS handover process, which affects the DAPS handover. Summary of the invention

[0004] The embodiments of the present application provide a wireless communication method, a terminal device, and a network device. The terminal device can report that an RLF occurs in a source cell during a DAPS switching process, so that the network device can optimize the threshold corresponding to the measurement event in the measurement configuration, thereby ensuring the validity of the subsequent DAPS switching configuration and optimizing the DAPS switching.

[0005] In a first aspect, a wireless communication method is provided, the method comprising:

[0006] The terminal device sends first indication information to the network device, wherein:

[0007] The first indication information is used to indicate that RLF occurs between the terminal device and the source cell during the process of the terminal device switching from the source cell to the target cell using the DAPS switching method, and the network device is the network device of the target cell, or the network device is the network device of the cell rebuilt after the DAPS switching fails, or the network device is the network device of the source cell.

[0008] In a second aspect, a wireless communication method is provided, the method comprising:

[0009] The network device receives first indication information sent by the terminal device, wherein:

[0010] The first indication information is used to indicate that RLF occurs between the terminal device and the source cell during the process of the terminal device switching from the source cell to the target cell using the DAPS switching method, and the network device is the network device of the target cell, or the network device is the network device of the cell rebuilt after the DAPS switching fails, or the network device is the network device of the source cell.

[0011] In a third aspect, a terminal device is provided for executing the method in the first aspect.

[0012] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect.

[0013] In a fourth aspect, a network device is provided for executing the method in the second aspect.

[0014] Specifically, the network device includes a functional module for executing the method in the above second aspect.

[0015] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.

[0016] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect.

[0017] In a seventh aspect, a device is provided for implementing the method in any one of the first to third aspects above.

[0018] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes the method in any one of the first to second aspects described above.

[0019] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in any one of the first to second aspects above.

[0020] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above.

[0021] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects above.

[0022] Through the above technical solution, the terminal device can report that RLF occurs in the source cell during the DAPS switching process, so that the network device can optimize the threshold corresponding to the measurement event in the measurement configuration, thereby ensuring the effectiveness of the subsequent DAPS switching configuration and optimizing the DAPS switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of a late switching provided by the present application.

[0025] Figure 3 This is a schematic diagram of switching to an incorrect cell provided by the present application.

[0026] Figure 4 It is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

[0027] Figure 5 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0028] Figure 6 It is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0029] Figure 7 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0030] Figure 8 It is a schematic block diagram of a device provided according to an embodiment of the present application.

[0031] Fig. 9 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0034] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0035] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0036] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0037] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0038] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with 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 such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0039] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0040] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0041] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0042] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0043] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0044] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0045] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0046] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0047] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0048] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0049] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0050] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0051] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0052] In the relevant research on mobility enhancement of the 3rd Generation Partnership Project (3GPP), including LTE and NR, a DAPS optimization method for reducing the interruption time during switching is proposed. The main idea is that the terminal device will maintain the protocol stacks of the source cell and the target cell at the same time during the switching. When the terminal device receives the DAPS switching command, it maintains the connection of the source cell and initiates a synchronization process / random access to the target cell. When the synchronization process / random access is completed, the terminal device will switch the uplink data, that is, the uplink data transmission of the terminal device after random access will be switched from the source base station side to the target base station side. The release of the source base station protocol stack after random access is based on the display indication of the network, that is, during the period from random access to releasing the connection on the source base station side, the terminal device can normally receive the downlink data sent by the source cell, and can send uplink feedback related information of the downlink data to the source cell.

[0053] For DAPS switching, during the period when the terminal device initiates random access to the target cell, the terminal device will maintain monitoring of the wireless link of the source cell. If the link of the source cell fails, the terminal device will release the connection with the source cell and stop sending and receiving data with the source cell. In addition, if the DAPS switching fails, the terminal device does not successfully access the target cell, and the wireless link failure does not occur in the source cell, the terminal device can switch back to the connection with the source cell, thereby avoiding the Radio Resource Control (RRC) connection re-establishment process caused by the switching failure.

[0054] On the other hand, the terminal device will maintain wireless link monitoring of the source cell while accessing the target cell. If a radio link failure (RLF) occurs in the source cell while the terminal device accesses the target cell (the terminal device initiates a random access process to the target cell), the terminal device will release the source cell and will not initiate a connection re-establishment process.

[0055] During the DAPS switching process, the problem of late switching may occur, such as Figure 2 As shown, an RLF occurs in the terminal device facing the source cell. In this case, the terminal device selects the target cell after the cell selection process and initiates the reconstruction process. After the reconstruction is completed, the terminal device can send the RLF report to the target base station. And the target base station sends a failure indication to the source base station through the Xn interface, and the failure indication includes the RLF report. The source base station finds that the reason for the failure of this handover is too late to switch. Furthermore, the source base station can change the threshold setting of the measurement target corresponding to the terminal measurement report event to ensure the smooth progress of subsequent DAPS switching.

[0056] During the DAPS switching process, the problem of switching to the wrong cell may occur, such as Figure 3 As shown, an RLF occurs after the terminal device successfully accesses the target cell or a handover failure occurs during the access to the target cell, and the terminal device selects another cell other than the target cell and the source cell after the cell selection process, such as the first cell (served by the first base station), and initiates the reconstruction process. After the reconstruction is completed, the terminal sends an RLF report to the first base station, and the first base station sends a failure indication to the target base station via the Xn interface, and the failure indication includes the RLF report. The target base station finds that this is a problem of switching to the wrong cell. Furthermore, the target base station sends a handover report including a handover report type of 'HO to a wrong cell' to the source base station, so that the source base station changes the threshold setting of the measurement target corresponding to the terminal measurement report event.

[0057] It should be noted that the main purpose of DAPS switching is to achieve a data interaction interruption time of 0ms between the terminal and the network. If a radio link failure (RLF) occurs in the source cell during the terminal device accessing the target cell (the terminal device initiates a random access process to the target cell), the terminal device releases the source cell and does not initiate a connection re-establishment process. At this time, since the terminal device has not successfully accessed the target cell, the direct data transmission and reception between the terminal device and the source cell is also interrupted, so the interruption time of 0ms cannot be guaranteed.

[0058] Based on the above problems, the present application proposes a solution for handling radio link failure (RLF) between a terminal device and a source cell during DAPS switching. The terminal device can report that RLF has occurred in the source cell during the DAPS switching process, and the network device can optimize the threshold corresponding to the measurement event in the measurement configuration, thereby ensuring the effectiveness of the subsequent DAPS switching configuration and optimizing the DAPS switching.

[0059] The technical solution of the present application is described in detail below through specific embodiments.

[0060] Figure 4 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, such as Figure 4 As shown, the method 200 may include at least part of the following contents:

[0061] S210, the terminal device sends first indication information to the network device, wherein the first indication information is used to indicate that RLF occurs between the terminal device and the source cell during a process in which the terminal device switches from a source cell to a target cell using a DAPS switching mode, and the network device is a network device of the target cell, or the network device is a network device of a cell rebuilt after a DAPS switching failure, or the network device is a network device of the source cell;

[0062] S220, the network device receives the first indication information sent by the terminal device.

[0063] It should be noted that in the embodiment of the present application, the network device may be a base station or an access network device. In addition, the cell reconstructed after the DAPS switching fails may be a cell other than the source cell and the target cell.

[0064] In an embodiment of the present application, during the DAPS switching process, while the terminal device initiates random access to the target cell, the terminal device will maintain wireless link monitoring of the source cell, and after RLF occurs between the terminal device and the source cell, the terminal device sends the first indication information to the network device. Furthermore, the network device can determine based on the first indication information that the terminal device has experienced RLF of the source cell during DAPS switching, that is, in this case, the DAPS switching configuration cannot guarantee that the terminal device can maintain normal communication with the source cell before successfully accessing the target cell. Furthermore, after the source cell learns that it has experienced RLF during DAPS switching, it can optimize and adjust the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS switching process, thereby ensuring the effectiveness of the subsequent DAPS switching configuration and optimizing the DAPS switching.

[0065] After the target cell obtains the first indication information, that is, after the target cell learns that the terminal device has experienced the RLF of the source cell during the DAPS switching, the target cell may forward the first indication information to the source cell, or the target cell indicates to the source cell that the terminal device has experienced the RLF of the source cell during the DAPS switching. Thus, the source cell may optimize and adjust the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS switching process, thereby ensuring the effectiveness of the subsequent DAPS switching configuration and optimizing the DAPS switching.

[0066] After the cell rebuilt after the DAPS handover failure obtains the first indication information, that is, after the cell rebuilt after the DAPS handover failure learns that the terminal device has experienced the RLF of the source cell during the DAPS handover, the cell rebuilt after the DAPS handover failure can forward the first indication information to the target cell, and the target cell can analyze the cause of the DAPS handover failure and indicate to the source cell that the terminal device has experienced the RLF of the source cell during the DAPS handover. Thus, the source cell can optimize and adjust the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS handover process, thereby ensuring the effectiveness of the subsequent DAPS handover configuration and optimizing the DAPS handover.

[0067] After the cell rebuilt after the DAPS switching failure obtains the first indication information, that is, after the cell rebuilt after the DAPS switching failure learns that the terminal device has experienced the RLF of the source cell during the DAPS switching, the cell rebuilt after the DAPS switching failure can forward the first indication information to the source cell. Thus, the source cell can optimize and adjust the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS switching process, thereby ensuring the effectiveness of the subsequent DAPS switching configuration and optimizing the DAPS switching.

[0068] In addition, in an embodiment of the present application, DAPS switching failure may refer to a failure of the terminal device to access the target cell, and DAPS switching failure may also refer to a successful access of the terminal device to the target cell and an RLF occurs between the terminal device and the target cell.

[0069] Optionally, in an embodiment of the present application, the first indication information is a RLF report. Of course, the first indication information may also be some other information, which is not limited in the present application.

[0070] Optionally, in some embodiments, the first indication information includes a type value, wherein:

[0071] This type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report of RLF occurring in the source cell during DAPS switching; or,

[0072] The type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report in which an RLF occurs in the source cell during DAPS switching and the terminal device successfully accesses the target cell; or

[0073] This type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report in which an RLF occurs in the source cell during DAPS switching and the terminal device fails to access the target cell.

[0074] Optionally, when the first indication information is a RLF report,

[0075] This type value is used to indicate that the RLF report is an RLF report of RLF occurring in the source cell during DAPS handover; or,

[0076] This type value is used to indicate that the RLF report is an RLF report that an RLF occurs in a source cell during a DAPS handover and the terminal device successfully accesses the target cell; or,

[0077] This type value is used to indicate that the RLF report is an RLF report in which an RLF occurs in the source cell during DAPS switching and the terminal device fails to access the target cell.

[0078] For example, when the network device is the network device of the target cell, the type value is used to indicate that the RLF report is an RLF report of RLF occurring in the source cell during DAPS handover.

[0079] For another example, when the network device is the network device of the target cell, the type value is used to indicate that the RLF report is an RLF report of RLF occurring in the source cell during DAPS switching and an RLF report of the terminal device successfully accessing the target cell.

[0080] For another example, when the network device is a network device of a cell reestablished after a DAPS switching failure, the type value is used to indicate that the RLF report is an RLF report that an RLF occurs in the source cell during the DAPS switching and the terminal device fails to access the target cell.

[0081] Optionally, in some embodiments, the first indication information includes first information, and the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

[0082] For example, the first information occupies X bits, and the bit value of the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

[0083] Optionally, the first information indicates at least one of the following information:

[0084] The timer used by the source cell to monitor the network channel quality during the DAPS handover expires;

[0085] The source cell fails in random access during DAPS handover;

[0086] The source cell reports the random access problem of the source cell to the bottom layer during the DAPS handover;

[0087] The RLC retransmission of the source cell reaches the maximum retransmission number during the execution of the DAPS handover of the source cell;

[0088] The source cell fails to recover from a beam failure during DAPS handover.

[0089] The source cell experiences RLF during DAPS handover.

[0090] Optionally, the first information is a cause field, that is, the cause field can be used to indicate that RLF occurs in the source cell during the DAPS switching process, or the cause field can be used to indicate the reason why RLF occurs in the source cell during the DAPS switching process.

[0091] That is, the reason field may include but is not limited to at least one of the following:

[0092] The timer used by the source cell to monitor the network channel quality during the DAPS handover expires (t310-Expiry);

[0093] The source cell fails in random access during DAPS handover;

[0094] The source cell reports a random access problem (randomAccessProblem) of the source cell to the bottom layer during the DAPS handover.

[0095] The maximum number of retransmissions (rlc-MaxNumRetx) of the radio link control (RLC) retransmission of the source cell during the DAPS handover;

[0096] During the DAPS handover of the source cell, the source cell fails to recover from a beam failure (beamFailureRecoveryFailure);

[0097] A radio link failure occurs in the source cell during DAPS handover.

[0098] It should be noted that the timer used to monitor the quality of the network channel may be, for example, T310. The timer is started when the terminal device receives n consecutive out-of-sync indications, and if the timer times out, it is considered that a radio link failure (RLF) has occurred.

[0099] In addition, the bottom layer reports the random access problem of the source cell, for example, which can be understood as the media access control (Media Access Control, MAC) layer reporting the random access problem of the source cell to the RRC layer.

[0100] Optionally, when the first indication information is a RLF report, the RLF report may include a cause field (rlf-Cause-r16), and a possible configuration manner of the cause field (rlf-Cause-r16) in the RLF report may be as follows:

[0101]

[0102]

[0103] It should be noted that, in the embodiment of the present application, other information except the cause field (rlf-Cause-r16) in the above RLF report (RLF-Report-r16) may be information in some existing standards, which is not elaborated in detail in the present application.

[0104] In an embodiment of the present application, the above-mentioned reason field can also be expressed as a reason value or a reason information field, which is not limited in the present application.

[0105] Optionally, in the embodiment of the present application, the first indication information includes a measurement result of the terminal device for DAPS switching, so that the network device can make targeted adjustments based on the measurement result, thereby optimizing the DAPS switching.

[0106] For example, when the first indication information is an RLF report, the measurement result of the measurement performed by the terminal device for DAPS switching included in the RLF report may be the variable value of the latest measurement of the terminal device, such as the value of the variable radio link failure report (VarRLF-Report). The measurement in this case may refer to the measurement performed for DAPS switching. For example, channel measurement, beam measurement, cell measurement, interference measurement, etc.

[0107] In an embodiment of the present application, the variable value most recently measured by the terminal device can be carried in the RLF report for reporting, and the source cell can optimize the measurement reporting threshold in a targeted manner when subsequently configuring DAPS switching, thereby avoiding data interruption due to premature disconnection of the source cell during the DAPS switching process.

[0108] It should be noted that the RLF report may also include some other information, for example, the RLF report may also include: the geographical location of the terminal device when the RLF occurs, the source cell identifier, the target cell identifier, etc., but this application does not limit this.

[0109] Optionally, in an embodiment of the present application, when the terminal device successfully accesses the target cell and RLF occurs in the source cell during DAPS switching, the terminal device sends the first indication information to the network device of the target cell. In this case, further, after the target cell receives the first indication information, it can forward the first indication information to the source cell, or the target cell indicates to the source cell that the terminal device has experienced RLF of the source cell during DAPS switching. Thus, the source cell can optimize and adjust the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS switching process, thereby avoiding data interruption due to premature disconnection of the source cell during the DAPS switching process, ensuring the effectiveness of the subsequent DAPS switching configuration, and optimizing the DAPS switching.

[0110] Optionally, in an embodiment of the present application, when the terminal device fails to access the target cell and RLF occurs in the source cell during the DAPS switching, the terminal device sends the first indication information to the network device of the cell rebuilt after the DAPS switching fails. In this case, further, the cell rebuilt after the DAPS switching fails can forward the first indication information to the target cell and / or the source cell. For example, the cell rebuilt after the DAPS switching fails sends failure indication information to the target cell, and / or the cell rebuilt after the DAPS switching fails sends failure indication information to the source cell, and the failure indication information is used to indicate that the terminal device failed to switch from the source cell to the target cell using the DAPS switching method.

[0111] Optionally, the failure indication information includes at least one of the following information:

[0112] The target cell allocates the cell radio network temporary identifier (Cell Radio Network Temporary Identity, C-RNTI) to the terminal device, the source cell allocates the C-RNTI to the terminal device, and the first indication information.

[0113] Furthermore, after receiving the failure indication information, the target cell can analyze the cause of the DAPS switching failure. For example, the target cell analyzes and finds that the cause of the DAPS switching failure is switching to the wrong cell (HO to wrong cell). After receiving the failure indication information, the target cell can also indicate to the source cell that the terminal device has experienced the RLF of the source cell during the DAPS switching. For example, the target cell sends a switching report to the source cell, and the type of the switching report is DAPS switching to the wrong cell. The switching report is used to indicate that the terminal device has experienced the RLF of the source cell during the DAPS switching. Optionally, after receiving the switching report, the source cell can analyze the cause of the DAPS switching failure, and can optimize and adjust the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS switching process, thereby avoiding data interruption due to premature disconnection of the source cell during the DAPS switching process, ensuring the effectiveness of the subsequent DAPS switching configuration, and optimizing the DAPS switching.

[0114] Furthermore, after the source cell receives the failure indication information, it can analyze the cause of the DAPS switching failure, and can optimize and adjust the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS switching process, thereby avoiding data interruption due to premature disconnection of the source cell during the DAPS switching process, ensuring the effectiveness of the subsequent DAPS switching configuration, and optimizing the DAPS switching.

[0115] Optionally, in some embodiments, before sending the first indication information, the terminal device sends a second indication information to the network device, wherein the second indication information is used to indicate whether RLF information and / or DAPS switching failure information is present in the RLF report reported by the terminal device. For example, the second indication information may be an available RLF information (rlf-InfoAvailable) field, or of course, some other fields, which is not limited in this application. Optionally, the second indication information may be represented by a first flag bit, that is, the first flag bit may be available RLF information (rlf-InfoAvailable).

[0116] Optionally, the second indication information may be carried in RRC connection reconfiguration complete (RRCConnectionReconfigurationComplete) information.

[0117] Optionally, after receiving the second indication information, the network device sends a request information to the terminal device, where the request information is used to request information of the terminal device. Correspondingly, the terminal device receives the request information sent by the network device.

[0118] For example, the request information is a terminal information request (UEInformationRequest) signaling.

[0119] Optionally, in some embodiments, S210 may specifically be:

[0120] In response to the request information, the terminal device sends a response information to the network device, wherein the response information includes the first indication information, such as an RLF report.

[0121] For example, the response information is a terminal information response (UEinformationResponse) signaling.

[0122] Optionally, the request information may include second information, and the second information is used to indicate whether the terminal device reports the RLF report. Further, when the second information is configured as a true value, the terminal device sends the response information to the network device.

[0123] Optionally, the second information may be a RLF report request (rlf-ReportReq) field. Of course, the second information may also be some fields, which is not limited in the present application.

[0124] Optionally, the second information may be a second flag bit, that is, the second flag bit is used to indicate whether the terminal device reports the RLF report. Further, when the second flag bit is configured as a true value, the terminal device sends the response information to the network device. In other words, the second flag bit may be an RLF report request (rlf-ReportReq) field.

[0125] That is, when the second flag bit is the rlf-ReportReq field, if the rlf-ReportReq field is configured as a true value, the terminal device reports the first indication information, such as an RLF report.

[0126] For example, in the case where the request information includes the second information, such as the terminal information request (UEInformationRequest) signaling includes the RLF report request (rlf-ReportReq) field, in this case, a possible configuration manner of the RLF report request (rlf-ReportReq) field may be as follows:

[0127]

[0128]

[0129] It should be noted that, in the embodiment of the present application, other information except the RLF report request (rlf-ReportReq) field in the above-mentioned terminal information request (UEInformationRequest) signaling may be information in some existing standards, which is not elaborated in detail in the present application.

[0130] Optionally, in the embodiment of the present application, the condition causing RLF to occur between the terminal device and the source cell includes but is not limited to at least one of the following:

[0131] The timer used by the source cell to monitor the network channel quality during the DAPS handover expires;

[0132] The source cell fails in random access during DAPS handover;

[0133] The source cell reports the random access problem of the source cell to the bottom layer during the DAPS handover;

[0134] The RLC retransmission of the source cell reaches the maximum retransmission number during the execution of the DAPS handover of the source cell;

[0135] The source cell fails to recover from a beam failure during DAPS handover.

[0136] A radio link failure occurs in the source cell during DAPS handover.

[0137] Therefore, in an embodiment of the present application, the terminal device can report that RLF has occurred in the source cell during the DAPS switching process, and the network device can optimize the threshold corresponding to the measurement event in the measurement configuration, thereby ensuring the effectiveness of the subsequent DAPS switching configuration and optimizing the DAPS switching. Specifically, after the source cell learns that RLF has occurred in the source cell during the DAPS switching process, the threshold corresponding to the measurement event in the measurement configuration of the relevant frequency point of the terminal device during the DAPS switching process can be optimized and adjusted, thereby avoiding data interruption due to premature disconnection of the source cell during the DAPS switching process, ensuring the effectiveness of the subsequent DAPS switching configuration, and optimizing the DAPS switching.

[0138] Combination of the above Figure 4 , describes in detail the method embodiment of the present application, and the following is combined with Figures 5 to 9 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0139] Figure 5 FIG. 3 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. Figure 5 As shown, the terminal device 300 includes:

[0140] The communication unit 310 is configured to send first indication information to the network device, wherein:

[0141] The first indication information is used to indicate that a radio link failure RLF occurs between the terminal device and the source cell during a process in which the terminal device switches from a source cell to a target cell using a dual activation protocol stack DAPS switching method, and the network device is a network device of the target cell, or the network device is a network device of a cell rebuilt after a DAPS switching failure, or the network device is a network device of the source cell.

[0142] Optionally, the first indication information includes a type value, wherein:

[0143] This type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report of RLF occurring in the source cell during DAPS switching; or,

[0144] This type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report in which an RLF occurs in the source cell during DAPS switching and the terminal device fails to access the target cell.

[0145] Optionally, the first indication information includes first information, and the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

[0146] Optionally, the first information indicates at least one of the following information:

[0147] The timer used by the source cell to monitor the network channel quality during the DAPS handover expires;

[0148] The source cell fails in random access during DAPS handover;

[0149] The source cell reports the random access problem of the source cell to the bottom layer during the DAPS handover;

[0150] The radio link control RLC retransmission of the source cell reaches a maximum retransmission number during the execution of the DAPS handover by the source cell;

[0151] The source cell fails to recover from a beam failure during DAPS handover.

[0152] The source cell experiences RLF during DAPS handover.

[0153] Optionally, the first indication information includes a measurement result of the terminal device performed on DAPS switching.

[0154] Optionally, the communication unit 310 is specifically configured to:

[0155] When the terminal device successfully accesses the target cell and RLF occurs in the source cell during DAPS switching, the first indication information is sent to the network device of the target cell.

[0156] Optionally, the communication unit 310 is specifically configured to:

[0157] When the terminal device successfully accesses the target cell and RLF occurs in the source cell during DAPS switching, the first indication information is sent to the network device of the source cell through the target cell.

[0158] Optionally, the communication unit 310 is specifically configured to:

[0159] When the terminal device fails to access the target cell and RLF occurs in the source cell during DAPS switching, the first indication information is sent to a network device of the cell reestablished after the DAPS switching failure.

[0160] Optionally, the communication unit 310 is specifically configured to:

[0161] When the terminal device fails to access the target cell and RLF occurs in the source cell during DAPS switching, the first indication information is sent to the network device of the target cell through the cell rebuilt after the DAPS switching failure, and / or the first indication information is sent to the network device of the source cell through the cell rebuilt after the DAPS switching failure.

[0162] Optionally, before sending the first indication information, the communication unit 310 is further used to send second indication information to the network device, wherein the second indication information is used to indicate whether RLF information and / or DAPS switching failure information exists in the RLF report reported by the terminal device.

[0163] Optionally, the second indication information is available RLF information rlf-InfoAvailable field.

[0164] Optionally, the communication unit 310 is specifically configured to:

[0165] Receive a request message sent by the network device, where the request message is used to request information of the terminal device:

[0166] Sending response information to the request information to the network device, wherein the response information includes the first indication information.

[0167] Optionally, the request information includes second information, where the second information is used to indicate whether the terminal device reports the RLF report;

[0168] The communication unit 310 is specifically used for:

[0169] When the second information is configured as a true value, the response information is sent to the network device.

[0170] Optionally, the second information is an RLF report request rlf-ReportReq field.

[0171] Optionally, the first indication information is a RLF report.

[0172] Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0173] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to implement Figure 3 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0174] Figure 6 FIG. 4 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. Figure 6 As shown, the network device 400 includes:

[0175] The communication unit 410 is configured to receive first indication information sent by a terminal device, wherein:

[0176] The first indication information is used to indicate that a radio link failure RLF occurs between the terminal device and the source cell during a process in which the terminal device switches from a source cell to a target cell using a dual activation protocol stack DAPS switching method, and the network device is a network device of the target cell, or the network device is a network device of a cell rebuilt after a DAPS switching failure, or the network device is a network device of the source cell.

[0177] Optionally, the first indication information includes a type value, wherein:

[0178] This type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report of RLF occurring in the source cell during DAPS switching; or,

[0179] This type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report in which an RLF occurs in the source cell during DAPS switching and the terminal device fails to access the target cell.

[0180] Optionally, the first indication information includes first information, and the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

[0181] Optionally, the first information indicates at least one of the following information:

[0182] The timer used by the source cell to monitor the network channel quality during the DAPS handover expires;

[0183] The source cell fails in random access during DAPS handover;

[0184] The source cell reports the random access problem of the source cell to the bottom layer during the DAPS handover;

[0185] The radio link control RLC retransmission of the source cell reaches a maximum retransmission number during the execution of the DAPS handover by the source cell;

[0186] The source cell fails to recover from a beam failure during DAPS handover.

[0187] The source cell experiences RLF during DAPS handover.

[0188] Optionally, the first indication information includes a measurement result of the terminal device performed on DAPS switching.

[0189] Optionally, the communication unit 410 is further configured to forward the first indication information to the source cell when the network device is the network device of the target cell.

[0190] Optionally, the communication unit 410 is also used to send failure indication information to the target cell and / or send failure indication information to the source cell when the network device is a network device of a cell rebuilt after a DAPS switching failure, wherein the failure indication information is used to indicate that the terminal device has failed to switch from the source cell to the target cell using the DAPS switching method.

[0191] Optionally, the failure indication information includes at least one of the following information:

[0192] The target cell allocates the cell radio network temporary identifier C-RNTI to the terminal device, the source cell allocates the C-RNTI to the terminal device, and the first indication information.

[0193] Optionally, before receiving the first indication information, the communication unit 410 is further used to receive second indication information sent by the terminal device, wherein the second indication information is used to indicate whether RLF information and / or DAPS switching failure information exists in the RLF report reported by the terminal device.

[0194] Optionally, the second indication information is available RLF information rlf-InfoAvailable field.

[0195] Optionally, the communication unit 410 is specifically configured to:

[0196] Sending a request message to the terminal device, where the request message is used to request information of the terminal device;

[0197] Receive response information sent by the terminal device to the request information, wherein the response information includes the first indication information.

[0198] Optionally, the request information includes second information, where the second information is used to indicate whether the terminal device reports the RLF report;

[0199] The communication unit 410 is specifically used for:

[0200] When the second information is configured as a true value, the response information sent by the terminal device is received.

[0201] Optionally, the second information is an RLF report request rlf-ReportReq field.

[0202] Optionally, the first indication information is a RLF report.

[0203] Optionally, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0204] It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 400 are respectively to implement Figure 4 For the sake of brevity, the corresponding processes of the network device in the method 200 are not described in detail here.

[0205] Figure 7 It is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. Figure 7The communication device 500 shown includes a processor 510, and the processor 510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0206] Alternatively, if Figure 7 As shown, the communication device 500 may further include a memory 520. The processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.

[0207] The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

[0208] Alternatively, if Figure 7 As shown, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0209] The transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of the antennas may be one or more.

[0210] Optionally, the communication device 500 may specifically be a network device in an embodiment of the present application, and the communication device 500 may implement corresponding processes implemented by the network device in each method in the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0211] Optionally, the communication device 500 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0212] Figure 8 It is a schematic structural diagram of the device of an embodiment of the present application. Figure 8 The device 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0213] Alternatively, if Figure 8 As shown, the apparatus 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0214] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0215] Optionally, the apparatus 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0216] Optionally, the apparatus 600 may further include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0217] Optionally, the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods in the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0218] Optionally, the apparatus may be applied to a mobile terminal / terminal device in an embodiment of the present application, and the apparatus may implement corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0219] Optionally, the device mentioned in the embodiments of the present application may also be a chip, for example, a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0220] Fig. 9 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. Fig. 9 As shown, the communication system 700 includes a terminal device 710 and a network device 720 .

[0221] Among them, the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0222] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0223] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0224] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0225] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0226] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0227] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0228] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0229] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0230] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments 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 various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0231] The embodiment of the present application also provides a computer program.

[0232] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0233] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0234] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0235] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0236] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0237] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0238] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0239] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0240] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device sends first indication information to the network device, wherein: The first indication information is used to indicate that a radio link failure RLF occurs between the terminal device and the source cell during a process in which the terminal device switches from a source cell to a target cell using a dual activation protocol stack DAPS switching mode, and the network device is a network device of the target cell; The first indication information includes a measurement result of the measurement performed by the terminal device for DAPS switching; The first indication information includes a type value, wherein the type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report of RLF occurring in a source cell during DAPS switching.

2. The method according to claim 1, characterized in that The first indication information includes first information, and the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

3. The method according to claim 1 or 2, characterized in that The method further comprises: Before sending the first indication information, the terminal device sends second indication information to the network device, wherein the second indication information is used to indicate whether the RLF report reported by the terminal device contains RLF information and / or DAPS switching failure information.

4. The method according to claim 3, characterized in that The terminal device sends first indication information to the network device, including: The terminal device receives the request information sent by the network device, where the request information is used to request information of the terminal device; The terminal device sends response information to the network device in response to the request information, wherein the response information includes the first indication information.

5. The method according to claim 4, characterized in that The request information includes second information, where the second information is used to indicate whether the terminal device reports an RLF report; The terminal device sends response information to the network device in response to the request information, including: When the second information is configured as a true value, the terminal device sends the response information to the network device.

6. A wireless communication method, characterized in that: include: The network device receives first indication information sent by the terminal device, wherein: The first indication information is used to indicate that a radio link failure RLF occurs between the terminal device and the source cell during a process in which the terminal device switches from a source cell to a target cell using a dual activation protocol stack DAPS switching mode, and the network device is a network device of the target cell; The first indication information includes a measurement result of the measurement performed by the terminal device for DAPS switching; The first indication information includes a type value, wherein the type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report of RLF occurring in a source cell during DAPS switching.

7. The method according to claim 6, characterized in that The first indication information includes first information, and the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

8. The method according to claim 6 or 7, characterized in that The method further comprises: Before receiving the first indication information, the network device receives second indication information sent by the terminal device, wherein the second indication information is used to indicate whether the RLF report reported by the terminal device contains RLF information and / or DAPS switching failure information.

9. The method according to claim 8, characterized in that The network device receives first indication information sent by the terminal device, including: The network device sends request information to the terminal device, where the request information is used to request information of the terminal device; The network device receives response information sent by the terminal device to the request information, wherein the response information includes the first indication information.

10. The method according to claim 9, characterized in that The request information includes second information, where the second information is used to indicate whether the terminal device reports an RLF report; The network device receives response information sent by the terminal device to the request information, including: When the second information is configured as a true value, the network device receives the response information sent by the terminal device.

11. A terminal device, characterized in that: include: A communication unit, configured to send first indication information to a network device, wherein: The first indication information is used to indicate that a radio link failure RLF occurs between the terminal device and the source cell during a process in which the terminal device switches from a source cell to a target cell using a dual activation protocol stack DAPS switching mode, and the network device is a network device of the target cell; The first indication information includes a measurement result of the measurement performed by the terminal device for DAPS switching; The first indication information includes a type value, wherein the type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report of RLF occurring in a source cell during DAPS switching.

12. The terminal device according to claim 11, characterized in that: The first indication information includes first information, and the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

13. The terminal device according to claim 11 or 12, characterized in that: Before sending the first indication information, the communication unit is further used to send second indication information to the network device, wherein the second indication information is used to indicate whether RLF information and / or DAPS switching failure information exists in the RLF report reported by the terminal device.

14. The terminal device according to claim 13, characterized in that: The communication unit is specifically used for: receiving a request message sent by the network device, wherein the request message is used to request information of the terminal device; Sending response information to the request information to the network device, wherein the response information includes the first indication information.

15. The terminal device according to claim 14, characterized in that: The request information includes second information, where the second information is used to indicate whether the terminal device reports an RLF report; The communication unit is specifically used for: When the second information is configured as a true value, the response information is sent to the network device.

16. A network device, characterized in that: include: A communication unit, configured to receive first indication information sent by a terminal device, wherein: The first indication information is used to indicate that a radio link failure RLF occurs between the terminal device and the source cell during a process in which the terminal device switches from a source cell to a target cell using a dual activation protocol stack DAPS switching mode, and the network device is a network device of the target cell; The first indication information includes a measurement result of the measurement performed by the terminal device for DAPS switching; The first indication information includes a type value, wherein the type value is used to indicate that the type of the RLF report reported by the terminal device is an RLF report of RLF occurring in a source cell during DAPS switching.

17. The network device according to claim 16, characterized in that: The first indication information includes first information, and the first information is used to indicate that RLF occurs in the source cell during the DAPS switching process.

18. The network device according to claim 16 or 17, characterized in that: Before receiving the first indication information, the communication unit is further used to receive second indication information sent by the terminal device, wherein the second indication information is used to indicate whether RLF information and / or DAPS switching failure information exists in the RLF report reported by the terminal device.

19. The network device according to claim 18, characterized in that: The communication unit is specifically used for: Sending a request message to the terminal device, wherein the request message is used to request information of the terminal device; Receive response information sent by the terminal device to the request information, wherein the response information includes the first indication information.

20. The network device according to claim 19, characterized in that The request information includes second information, where the second information is used to indicate whether the terminal device reports an RLF report; The communication unit is specifically used for: When the second information is configured as a true value, the response information sent by the terminal device is received.

21. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 1 to 5.

22. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 6 to 10.

23. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 5, and / or a method as claimed in any one of claims 6 to 10.

24. A computer-readable storage medium, characterized in that: Used to store a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 5 and / or the method according to any one of claims 6 to 10.

25. A computer program product, characterized in that The method comprises computer program instructions, which enable a computer to execute the method according to any one of claims 1 to 5 and / or the method according to any one of claims 6 to 10.

26. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 5 and / or the method according to any one of claims 6 to 10.

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