Communication operation execution method and device, terminal and network side equipment

Abstract

The invention discloses a communication operation execution method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the communication operation execution method comprises the steps that the terminal receives first indication information sent by the network side equipment, and the first indication information is used for indicating target configuration stored by a terminal application; or the first indication information is used for indicating target configuration, and the target configuration is used for configuring the terminal to work in a target cell; the terminal executes a first operation; wherein the first operation comprises at least one of the following items: performing layer 3 switching based on the target configuration; performing connection recovery based on the target configuration; and under the condition that the target configuration is the configuration stored in the first switching process, second switching is carried out based on the target configuration, the switching types of the first switching and the second switching are different, and the first switching and the second switching are both used for triggering access to the target cell.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a communication operation execution method and device, a terminal and a network side device. BACKGROUND

[0002] In the related art, the terminal needs to access a target cell when performing cell switching or connection recovery. However, in the process of cell switching or connection recovery of the terminal each time, the network side device needs to issue the configuration of the target cell accessed each time to the terminal, resulting in a large overhead of configuration signaling. SUMMARY

[0003] The embodiments of the present application provide a communication operation execution method and device, a terminal and a network side device, which can solve the problem of large overhead of configuration signaling.

[0004] In a first aspect, a communication operation execution method is provided, which is performed by a terminal, and the method comprises the following steps.

[0005] The terminal receives first indication information sent by a network side device, and the first indication information is used to indicate a target configuration saved by the terminal or the first indication information is used to indicate a target configuration, wherein the target configuration is a configuration used to configure the terminal to work in a target cell.

[0006] The terminal performs a first operation.

[0007] The first operation comprises at least one of the following:

[0008] Layer 3 switching based on the target configuration;

[0009] Connection recovery based on the target configuration;

[0010] In the case where the target configuration is a configuration saved in a first switching process, second switching is performed based on the target configuration, the switching types of the first switching and the second switching are different, and the first switching and the second switching are both used to trigger access to the target cell.

[0011] In a second aspect, a communication operation execution method is provided, which is performed by a network side device, and the method comprises the following steps.

[0012] The network side device sends first indication information to a terminal, and the first indication information is used to indicate a target configuration saved by the terminal to perform a first operation or the first indication information is used to indicate a target configuration, wherein the target configuration is a configuration used to configure the terminal to work in a target cell.

[0013] The first operation comprises at least one of the following:

[0014] performing layer 3 handover;

[0015] performing connection recovery;

[0016] performing a second handover in a case where the target configuration is a configuration saved in a first handover, the first handover and the second handover being different in handover type, and the first handover and the second handover both being used to trigger access to the target cell.

[0017] In a third aspect, a communication operation execution apparatus is provided, comprising:

[0018] a receiving module configured to receive first indication information sent by a network side device, the first indication information being used to indicate a target configuration to be applied by the terminal or the first indication information being used to indicate a target configuration, the target configuration being a configuration used to configure the terminal to work in a target cell;

[0019] a processing module configured to perform a first operation;

[0020] The first operation comprises at least one of the following:

[0021] performing layer 3 handover based on the target configuration;

[0022] performing connection recovery based on the target configuration;

[0023] performing a second handover based on the target configuration in a case where the target configuration is a configuration saved in a first handover, the first handover and the second handover being different in handover type, and the first handover and the second handover both being used to trigger access to the target cell.

[0024] In a fourth aspect, a communication operation execution apparatus is provided, comprising:

[0025] a sending module configured to send first indication information to a terminal, the first indication information being used to instruct the terminal to perform a first operation based on a target configuration to be applied by the terminal or the first indication information being used to indicate a target configuration, the target configuration being a configuration used to configure the terminal to work in a target cell;

[0026] The first operation comprises at least one of the following:

[0027] performing layer 3 handover;

[0028] performing connection recovery;

[0029] performing a second handover in a case where the target configuration is a configuration saved in a first handover, the first handover and the second handover being different in handover type, and the first handover and the second handover both being used to trigger access to the target cell.

[0030] In a fifth aspect, a communication operation performing apparatus is provided, which is configured to perform the steps of the method according to the first aspect, or implement the steps of the method according to the second aspect.

[0031] In a sixth aspect, a terminal is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the method according to the first aspect.

[0032] In a seventh aspect, a terminal is provided, which comprises a processor and a communication interface, wherein,

[0033] The communication interface is configured to receive first indication information sent by a network-side device, the first indication information being used to indicate a target configuration saved by the terminal, or the first indication information being used to indicate a target configuration, the target configuration being a configuration used to configure the terminal to work in a target cell.

[0034] The processor is configured to perform a first operation.

[0035] The first operation comprises at least one of the following:

[0036] Performing layer 3 handover based on the target configuration.

[0037] Performing connection recovery based on the target configuration.

[0038] In a case where the target configuration is a configuration saved in a first handover process, performing a second handover based on the target configuration, the first handover and the second handover being different in handover type, and the first handover and the second handover both being used to trigger access to the target cell.

[0039] In an eighth aspect, a network-side device is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the method according to the second aspect.

[0040] In a ninth aspect, a network-side device is provided, which comprises a processor and a communication interface, wherein,

[0041] The communication interface is configured to send first indication information to a terminal, the first indication information being used to indicate a target configuration saved by the terminal to perform a first operation, or the first indication information being used to indicate a target configuration, the target configuration being a configuration used to configure the terminal to work in a target cell.

[0042] The first operation comprises at least one of the following:

[0043] Performing layer 3 handover.

[0044] performing connection recovery;

[0045] performing a second handover in a case where the target configuration is a configuration saved in a first handover, the first handover and the second handover being different in handover type, and the first handover and the second handover both being used to trigger access to the target cell.

[0046] In a tenth aspect, a readable storage medium is provided, the readable storage medium storing a program or instructions, the program or instructions being executed by a processor to implement the steps of the method according to the first aspect or the steps of the method according to the second aspect.

[0047] In an eleventh aspect, a wireless communication system is provided, including a terminal and a network side device, the terminal being configured to implement the steps of the method according to the first aspect, and the network side device being configured to implement the steps of the method according to the second aspect.

[0048] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, and the processor being configured to run a program or instructions to implement the method according to the first aspect or the method according to the second aspect.

[0049] In a thirteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, and the computer program / program product being executed by at least one processor to implement the method according to the first aspect or the method according to the second aspect.

[0050] In the embodiments of the present application, a terminal receives first indication information sent by a network side device, the first indication information being used to indicate a target configuration saved by the terminal or a target configuration, the target configuration being a configuration used to configure the terminal to work in a target cell; the terminal performs a first operation; and the first operation includes at least one of the following: performing layer 3 handover based on the target configuration; performing connection recovery based on the target configuration; and performing a second handover based on the target configuration in a case where the target configuration is a configuration saved in a first handover, the first handover and the second handover being different in handover type, and the first handover and the second handover both being used to trigger access to the target cell. In this way, the network side device indicates the terminal to apply the saved target configuration to perform cell handover or connection recovery, and it is not necessary to repeatedly transmit the configuration used to access the target cell, thereby reducing the overhead of configuration signaling. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0052] Figure 2 is a schematic diagram of a L3 switching process in the related art;

[0053] Figure 3 is a schematic diagram of a LTM switching process in the related art;

[0054] Figure 4 is a schematic diagram of a connection recovery process in the related art;

[0055] Figure 5 is one of flowcharts of a communication operation execution method provided by an embodiment of the present application;

[0056] Figure 6 is another flowchart of a communication operation execution method provided by an embodiment of the present application;

[0057] Figure 7 is one of structural schematic diagrams of a communication operation execution apparatus provided by an embodiment of the present application;

[0058] Figure 8 is another structural schematic diagram of a communication operation execution apparatus provided by an embodiment of the present application;

[0059] Figure 9 is a structural schematic diagram of a communication device provided by an embodiment of the present application;

[0060] Figure 10 is a structural schematic diagram of a terminal provided by an embodiment of the present application;

[0061] Figure 11 is one of structural schematic diagrams of a network side device provided by an embodiment of the present application;

[0062] Figure 12 is another structural schematic diagram of a network side device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0063] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0064] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0065] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0066] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following describes a New Radio (NR) system for the purpose of example, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems. th

[0067] Figure 1 ​A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can be a terminal side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook, a Personal Digital Assistant (PDA), a palm PC, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture, etc.), a game console, a Personal Computer (PC), a kiosk, or a self-service machine, etc. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothes, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can include an access network device or a core network device, wherein the access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, and is not limited to a particular technical terminology, provided that the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0068] The core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0069] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices together, and the embodiments of the present application do not make a specific limitation in this regard. It can be understood that the above function modules can be network elements in a hardware device, can be software function modules running on a dedicated hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0070] For the convenience of understanding, some contents related to the embodiments of the present application are explained as follows:

[0071] 1. Traditional Layer 3 (L3) handover procedure

[0072] Take the handover procedure triggered by the radio resource control (RRC) in NR (i.e. the air interface handover command is an RRC message) as an example to explain the traditional L3 handover procedure in a cellular system.

[0073] As shown in FIG. 1, the inter-base station handover procedure at least includes the following steps: Figure 2

[0074] (1) The source gNB initiates handover and sends HANDOVER REQUEST to the target gNB through the Xn interface;

[0075] (2) The target gNB performs admission control and provides an RRC reconfiguration message (containing the configuration information of the target cell associated with the user equipment (UE, i.e. terminal) in the HANDOVER REQUEST ACKNOWLEDGE (i.e. the UE applies the target cell configuration when accessing or cutting into the candidate cell from the serving cell);

[0076] (3) The source gNB forwards the RRC reconfiguration message (RRCReconfiguration) carried in the HANDOVER REQUEST ACKNOWLEDGE to the UE;

[0077] (4) The UE and the source gNB disconnect and send an RRC reconfiguration complete message to the target gNB.

[0078] Between steps (3) and (4), the data transmission between the UE and the network side (NW, i.e. network side device) will be interrupted. In order to shorten the data interruption time, subsequently in 5G / NR, the layer 1 or layer 2 triggered mobility (L1 / L2 Triggered Mobility, LTM) handover procedure is introduced.

[0079] The embodiments of the present application mainly relate to the RRC reconfiguration message in step (3). ​

[0080] 2. LTM (L1 / L2 Triggered Mobility) handover procedure

[0081] In order to reduce the data interruption time in the handover process, LTM (L1 / L2-triggered mobility) is introduced in the related art, that is, a distributed unit (DU) or a source base station uses Layer 1 (L1) / Layer 2 (L2) (such as a physical layer or a medium access control (MAC) layer) signaling to instruct a terminal to hand over to a suitable target cell according to the Layer 1 measurement result reported by the terminal (optional). The LTM handover procedure is as shown in Figure 3 .

[0082] As shown in Figure 3 , the LTM handover procedure is as follows:

[0083] (1) L3 measurement reporting (optional step): the UE reports the result of L3 measurement to the base station;

[0084] (2) RRC pre-configuration: the terminal receives the information of one or more pre-configured candidate cells issued by the network side; the configuration of the candidate cell is that when the UE accesses or cuts in the candidate cell from the serving cell, the UE applies the target cell configuration;

[0085] The configuration information of each candidate cell is associated with an identifier (such as ltm-CandidateId-r18); the configuration information (ltm-candidateConfig-r18) of different candidate cells is associated with different identifiers. The signaling format of the IE where ltm-candidateConfig-r18 is located is RRCReconfiguration.

[0086] The pre-configuration information (such as LTM candidate configuration information element (LTM-Candidate information element)) is as follows:

[0087]

[0088] (3) The UE sends a configuration completion message to the NW;

[0089] (4) Optionally, the UE performs an uplink and downlink synchronization process with the candidate cell;

[0090] (5) The terminal obtains the L1 measurement result by measuring the downlink signals of the current serving cell and the neighboring cell and reports it;

[0091] (6) The terminal receives the cell switching signaling (such as a MAC control element (CE)) sent by the network side, and applies the RRC configuration information of the target cell;

[0092] The MAC CE carries identification information associated with the configuration of the candidate cell as the target cell.

[0093] (7) Optionally, the UE accesses the target cell based on a random access channel (RACH) procedure.

[0094] (8) The UE sends a handover completion message to the NW to end the LTM procedure.

[0095] The LTM procedure can be used to change the primary serving cell (PCell) or the primary secondary cell (PSCell).

[0096] 3. Conditional handover (CHO) procedure

[0097] In the conditional handover procedure, the NW pre-configures one or more candidate cell configurations (i.e., the target cell configuration applied by the UE when accessing or switching to the candidate cell) and corresponding execution conditions for the UE.

[0098] When the UE determines that the execution condition is met, the UE switches to the candidate cell that meets the execution condition. The UE determines whether the corresponding execution condition is met based on the signal quality of the serving cell and / or the candidate cell.

[0099] The configuration of CHO includes:

[0100] (1) The execution condition of CHO: composed of N measurement ids. Each measurement id corresponds to a measurement event. When the UE determines that the measurement result of the candidate cell (such as cell A) meets the preset condition, the UE considers that the relevant measurement event is triggered. When the measurement events corresponding to the N Measurement ids contained in an execution condition are all triggered, the UE initiates a handover procedure to change the serving cell (such as PCell) to Cell A, which is referred to as CHO being triggered. In NR, N takes the value of 1 or 2.

[0101] (2) Configuration parameters of candidate cell: Configuration parameters of Cell A that UE needs to apply in order to change the serving cell (PCell) to Cell A. In NR, the configuration parameters of Cell A are carried by RRC reconfiguration message containing ReconfigurationWithSync IE. The configuration is the target cell configuration that UE applies when accessing or camping on the candidate cell.

[0102] (3) CHO configuration identifier (ID): used to associate one execution condition and one configuration parameter of candidate PCell, which can be used for CHO procedure for the candidate PCell. If there are N candidate cells, N execution conditions and N configuration parameters of candidate PCell can be configured for UE to evaluate. According to the evaluation result, the final target PCell is determined (for example: the candidate PCell associated with the first satisfied execution condition). The execution condition and target configuration parameter for one PCell are associated by CHO configuration identifier; that is, one execution condition and one configuration parameter of candidate PCell associated with the same CHO configuration identifier are for one candidate PCell.

[0103] In NR, the execution condition of CHO, the configuration parameter of candidate cell and CHO configuration ID are associated together in the following way:

[0104]

[0105] wherein condReconfigId-r16 is CHO configuration ID, condExecutionCond-r16 is execution condition of CHO, condRRCReconfig-r16 is configuration of candidate cell, and the signaling format is RRCReconfiguration.

[0106] In related technologies, NW is allowed to configure CHO and LTM for one UE at the same time.

[0107] Conditional primary and secondary cell addition / change (CPAC) is similar to the configuration method of CHO, and is used for PSCell change procedure.

[0108] 4. Dual connectivity or multi-connectivity

[0109] Dual connectivity is a technology introduced in LTE and also used in NR, which means that UE can be connected to two base stations at the same time, and the two base stations provide data transmission services for UE at the same time. Since the wireless resources of two base stations can be used at the same time, the transmission rate of UE's service data is multiplied.

[0110] There is a signaling interface between two base stations serving the same UE, and the configuration information of the UE can be exchanged between them.

[0111] The serving base stations of the dual connectivity UE can belong to the same RAT, for example, two LTE eNBs; or belong to different RATs, for example, one LTE eNB and one NR gNB. The embodiments of the present application are applicable to any type of combination of dual connectivity base stations, and the type of dual connectivity base station is not limited.

[0112] Among the serving base stations of the dual connectivity UE, one is the master node (MN) and the other is the secondary node (SN). The network configures two special cells SpCell (Special Cell) for the dual connectivity UE, that is, one cell of the MN is configured as the PCell (Primary Cell) of the UE, and one cell of the SN is configured as the PSCell (Primary Secondary Cell) of the UE. If the carrier aggregation (CA) technology is applied at the same time, the other cells of the MN and SN serving the UE are the secondary cells (SCell) of the UE.

[0113] Multi-connection refers to more than two base stations serving the same UE. The embodiments of the present application are also applicable to multi-connection, and the type of multi-connection base station is not limited.

[0114] Similar to dual connectivity, among the serving base stations of the multi-connection UE, one is the master node (MN) and the others are secondary nodes (SNs).

[0115] The network configures multiple special cells SpCell (Special Cell) for the multi-connection UE, that is, one cell of the MN is configured as the PCell (Primary Cell) of the UE, and one cell of each SN is configured as the PSCell (Primary Secondary Cell) of the UE.

[0116] 5. Inactive state and connection recovery

[0117] In NR, in addition to the RRC_Idle and RRC_Connected states, a third RRC state, the inactive (RRC_Inactive) state, is introduced. When the NW releases the RRC connection with the UE, it can choose to enter one of RRC_IDLE or RRC_Inactive. This mechanism or similar mechanisms can also be adopted by future cellular systems (such as 6G).

[0118] In the RRC_Inactive state, both the NW and the UE save part of the UE's Access Stratum (AS) UE context information, so as to reuse it when the UE resumes the RRC connection from the RRC_Inactive state, i.e., enters the RRC_Connected state; and avoid retransmitting the corresponding configuration.

[0119] In Figure 4 the RRC_Inactive state, the UE resumes the RRC connection by sending an RRCResumeRequest message. The NW sends an RRCResume message carrying the configuration that the UE needs to apply. The UE sends an RRCResumeComplete message to end the connection resume procedure.

[0120] It should be noted that the base station that releases the UE's RRC connection and the base station that initiates the RRC connection resume procedure by the UE can be different base stations. For example:

[0121] At T1, the UE's serving base station is BS1, which instructs the UE to release the RRC connection and enter the RRC_Inactive state; BS1 can be referred to as the UE's anchor BS.

[0122] At T2, the UE initiates the connection resume in a cell under BS2. At this time, BS2 needs to determine the UE's anchor BS, i.e., BS1, according to the information in the RRCResumeRequest message; then, BS2 obtains the UE's context from BS1 for RRC connection resume.

[0123] Of course, if BS2 and BS1 are the same BS, then the UE context acquisition or transmission process between base stations can be omitted.

[0124] The communication operation execution method, device and related equipment provided by the embodiments of the present application will be described in detail below in combination with the accompanying drawings and some embodiments and application scenarios.

[0125] Referring to Figure 5 , Figure 5 is a flowchart of a communication operation execution method provided by the embodiments of the present application, as Figure 5 shown, the communication operation execution method comprises the following steps:

[0126] Step 101, the terminal receives first indication information sent by the network side device, the first indication information is used to indicate a target configuration applied by the terminal to save, or the first indication information is used to indicate a target configuration, the target configuration is a configuration used to configure the terminal to work in a target cell.

[0127] The first indication information can comprise an identity of the target configuration, and the terminal can determine the saved target configuration through the identity of the target configuration; or the first indication information can comprise an identity of the target cell, and the terminal can determine the saved target configuration through the identity of the target cell; or the first indication information can directly indicate that the terminal applies the saved target configuration of the current serving cell to perform connection recovery, and the terminal can determine the saved target configuration through the identity of the current serving cell, and in this case, the first indication information can not carry the identity. It can be understood that the target configuration is indicated through the received identity of the target configuration or the identity of the target cell, and the terminal applies the saved target configuration after receiving the identity of the target configuration or the identity of the target cell.

[0128] In addition, the first indication information can be carried in a handover command (such as an L3 handover command), or the first indication information can be carried in CHO configuration, or the first indication information can be carried in LTM handover configuration, or the first indication information can be carried in a response message to a connection recovery request message, or the first indication information can also be carried in new signaling, etc., and the embodiments are not limited in this regard.

[0129] Step 102, the terminal performs a first operation;

[0130] The first operation comprises at least one of the following:

[0131] Performing layer 3 handover based on the target configuration;

[0132] Performing connection recovery based on the target configuration;

[0133] In the case where the target configuration is a configuration saved in a first handover process, performing a second handover based on the target configuration, the handover types of the first handover and the second handover are different, and the first handover and the second handover are both used to trigger access to the target cell.

[0134] The first handover and the second handover can both be used to trigger the terminal to access the target cell. The first handover can be layer 3 handover, and the second handover can be CHO or LTM handover; or the first handover can be CHO, and the second handover can be layer 3 handover or LTM handover; or the first handover can be LTM handover, and the second handover can be layer 3 handover or CHO; etc., and the embodiments of the present application do not limit the specific implementation of the first handover and the second handover.

[0135] The layer 3 handover can be a handover triggered when the terminal receives a layer 3 handover command (for example, a handover command carried by RRC layer signaling; specifically, an RRC synchronous reconfiguration message) generated by the network side device. The CHO can be a handover triggered when the terminal determines that a preconfigured handover condition is met based on L3 measurement results. The LTM handover can be a handover triggered when the terminal receives an L2 handover command (for example, a handover command carried by MAC layer signaling) sent by the network side device. In the embodiments of the present application, any two of the layer 3 handover, the CHO, and the LTM handover belong to different types of handover.

[0136] In addition, the first handover and the second handover are different in handover type, which can include that the first handover and the second handover are different in handover triggering mode, or the first handover and the second handover are different in format of handover command.

[0137] It should be noted that two handovers that are different in handover triggering mode (for example, triggered based on a preconfigured condition being met or triggered based on a handover command sent by the network side device) or different in format of handover command (for example, triggered based on MAC CE or triggered based on an RRC handover command) belong to the category of different handover types discussed in the embodiments of the present application.

[0138] In an implementation manner, the target configuration is a configuration saved in a first handover process, which can include that the target configuration is a configuration saved in a first handover configuration process. For example, the first handover is CHO, and the target configuration is a configuration saved in a CHO configuration process; or the first handover is LTM, and the target configuration is a configuration saved in an LTM configuration process.

[0139] It should be noted that the CHO configuration can be understood or replaced as CHO preconfiguration. The LTM configuration can be understood or replaced as LTM handover configuration or LTM preconfiguration.

[0140] In an implementation manner, the first indication information is carried in a layer 3 handover command, and the terminal performs a layer 3 handover based on the target configuration.

[0141] In an implementation manner, the first indication information is carried in a layer 3 handover command, and in a case where the target configuration is a configuration saved in a first handover process, the terminal performs a second handover based on the target configuration, and the second handover is a layer 3 handover.

[0142] In an implementation manner, the first indication information is carried in a CHO configuration, and in a case where the target configuration is a configuration saved in a first handover process, the terminal performs a second handover based on the target configuration, and the second handover is CHO.

[0143] In an implementation, the first indication information is carried in an LTM switching configuration, and in a case where the target configuration is a configuration saved in a first switching process, the terminal performs a second switching based on the target configuration, and the second switching is an LTM switching.

[0144] In an implementation, the first indication information is carried in a response message to a connection recovery request message, and the terminal performs connection recovery based on the target configuration.

[0145] In an implementation, before the terminal receives the first indication information sent by the network side device, the method further includes: the terminal receives second signaling sent by the network side device, and the second signaling is used to instruct the terminal to save the target configuration or is used to instruct the terminal not to save the target configuration.

[0146] In an implementation, the terminal can perform layer 3 switching based on the target configuration. In a case where the target configuration is a configuration saved in a third switching process, the terminal can perform a fourth switching based on the target configuration, and the switching types of the third switching and the fourth switching are both layer 3 switching, and the third switching and the fourth switching are both used to access the target cell. For example: at T1, the terminal receives an L3 switching command, accesses cell1, and saves the received configuration of cell1 as the target configuration; at T2, the UE accesses cell2; at T3, the network side instructs the terminal to perform L3 switching by using the switching command received at T1, and access cell1, and at this time, the terminal applies the target configuration saved at T1.

[0147] In an implementation, before the terminal receives the first indication information sent by the network side device, the terminal receives configuration signaling including the target configuration, saves the target configuration and identification information (such as a number) of the target configuration for subsequent switching. The configuration signaling can be a traditional L3 switching command; or can be LTM or CHO or CPAC configuration signaling. The target configuration can be used as a configuration applied when the terminal accesses a target node (such as a target cell). In subsequent switching, the network side device only needs to indicate the identification information of the target configuration, and does not need to repeatedly transmit the target configuration. The target configuration can be used for LTM preconfigured candidate target cells, and can also be used for conditional switching preconfigured candidate target cells.

[0148] It should be noted that the parameter configurations that can be used or cannot be used for subsequent switching in the target configuration can be agreed by a protocol; for the parameter configurations that cannot be used for subsequent switching, a processing mechanism of the terminal in the absence of the parameter configurations can be agreed by the protocol or a new method is defined to ensure that the terminal obtains the parameter configurations.

[0149] In an implementation, the terminal applies the saved target configuration when initiating connection recovery from the RRC_Inactive state. The target configuration acquisition method includes, but is not limited to, an L3 handover command, and also includes a candidate target cell configuration pre-configured by the network side device based on an LTM or conditional handover (CHO or CPAC) mechanism. The network side device can instruct the terminal to apply the saved configuration during the connection recovery process. The network side device can instruct the terminal to apply the target configuration corresponding to the cell from which the terminal initiates connection recovery. For example, the network side device can instruct the terminal to apply the identification information of the target configuration, to instruct the terminal to apply the target configuration; or, the network side device can also instruct the terminal to apply the target configuration associated with the identification of the current serving cell (i.e., the cell from which the terminal initiates connection recovery) for connection recovery. The network side device can also instruct the update configuration based on the target configuration, so that the terminal can perform connection recovery based on the saved target configuration and the instructed update configuration.

[0150] In an implementation, the target configuration can be a configuration for the terminal to access a target cell. The first operation can include: performing L3 handover based on the target configuration; or, in the case where the target configuration is a configuration saved in a first handover process, performing a second handover based on the target configuration.

[0151] The embodiments of the present application can realize the reduction of target PSCell configuration information for CPAC.

[0152] In related technologies, the target cell configuration information is included in the traditional L3 handover command, LTM configuration, and CHO or CPAC configuration. For the same target cell, all or most of the target cell configuration information is the same. The target cell configuration information in the traditional L3 handover command, LTM configuration, and CHO or CPAC configuration is independently configured and cannot be relatedly referenced or reused. For example, if the network side device configures the terminal with the LTM configuration and CHO configuration associated with the candidate target cell CellA, the configuration of the candidate target cell CellA in the LTM configuration and the CHO configuration is the same or mostly the same, but it needs to be configured (i.e., transmitted over the air) twice, which causes unnecessary increase in configuration signaling overhead. In the embodiments of the present application, the terminal saves the received target configuration and applies it to the subsequent L3 handover, LTM handover configuration, and CHO or CPAC configuration, which can reduce the repeated transmission of the target configuration over the air and reduce the signaling overhead of the air transmission.

[0153] In related technologies, CHO, LTM, and traditional L3 handover are independent of each other, for example:

[0154] Case1: After the network side device has configured the CHO configuration related to Cell A (as a candidate cell), the terminal has saved the target cell configuration for switching into or accessing Cell A (such as condRRCReconfig-r16 based on network configuration, the format is defined by RRCReconfiguration (hereinafter referred to as RRCReconfiguration-CHO) message). If the network side device initiates traditional L3 handover (for example, for the purpose of load balancing) to switch the terminal to Cell A at this time, the network still needs to send the RRCReconfiguration (hereinafter referred to as RRCReconfiguration-legacy) message to the terminal to indicate the target cell configuration for switching into or accessing Cell A. Even if the values of all or most of the parameters of the locally saved RRCReconfiguration-CHO and the received RRCReconfiguration-legacy are the same.

[0155] In the embodiment of the application, the terminal can apply the locally saved RRCReconfiguration-CHO to L3 handover, so that the network side device does not need to send the complete (or containing the saved parameter configuration) RRCReconfiguration-legacy message to the terminal, and the overhead of configuration signaling can be saved.

[0156] Case2:

[0157] After the network side device has configured the LTM configuration related to Cell A (as a candidate cell), the terminal has saved the target cell configuration for switching into or accessing Cell A (such as ltm-CandidateConfig-r18 based on network configuration, the format is defined by RRCReconfiguration (hereinafter referred to as RRCReconfiguration-LTM) message). If the network side device initiates traditional L3 handover (for example, for the purpose of load balancing) to switch the terminal to Cell A at this time, the network still needs to send the RRCReconfiguration-legacy to the terminal to indicate the target cell configuration for switching into or accessing Cell A. Even if the values of all or most of the parameters of the locally saved RRCReconfiguration-LTM and the received RRCReconfiguration-legacy are the same.

[0158] In the embodiments of the present application, the terminal can apply the locally saved RRCReconfiguration-LTM to the L3 handover, so that the network side device does not need to send the complete (or containing the saved parameter configuration) RRCReconfiguration-legacy message to the terminal again, which can save the configuration signaling overhead.

[0159] Case 3:

[0160] After the network side device has configured the CHO configuration related to Cell A (as a candidate cell), the terminal has saved the target cell configuration for switching into or accessing Cell A (such as condRRCReconfig-r16 based on network configuration, the format is defined by RRCReconfiguration-CHO message). If the network side device configures the LTM configuration related to Cell A (as a candidate cell) at this time, the network side device needs to configure RRCReconfiguration-LTM to the UE again. Even if the values of all or most of the parameters of the locally saved RRCReconfiguration-CHO and the received RRCReconfiguration-LTM of the terminal are the same.

[0161] In the embodiments of the present application, the terminal can apply the locally saved RRCReconfiguration-CHO to the LTM handover, so that the network side device does not need to send the complete (or containing the saved parameter configuration) RRCReconfiguration-LTM message to the terminal again, which can save the configuration signaling overhead.

[0162] Case 4:

[0163] After the network side device has configured the LTM configuration related to Cell A (as a candidate cell), the terminal has saved the target cell configuration for switching into or accessing Cell A (such as ltm-CandidateConfig-r18 based on network configuration, the format is defined by RRCReconfiguration-LTM message). If the network side device continues to configure the CHO configuration related to Cell A (as a candidate cell) at this time, the network side device needs to configure RRCReconfiguration-CHO again. Even if the values of all or most of the parameters of the locally saved RRCReconfiguration-LTM and the received RRCReconfiguration-CHO of the terminal are the same.

[0164] In the embodiments of the present application, the terminal can apply the locally saved RRCReconfiguration-LTM to CHO, so that the network side device does not need to send the complete (or containing the saved parameter configuration) RRCReconfiguration-CHO message to the terminal, and the configuration signaling overhead can be saved.

[0165] In the embodiments of the present application, a set of target configurations of candidate cells can be multiplexed for multiple switching mechanisms, and the network side device configures the target configurations of the candidate cells and an identifier; in subsequent traditional switching (i.e. L3 switching), or CHO or LTM pre-configuration, the target configurations of the candidate cells can be referenced by the identifier to avoid the signaling overhead caused by repeated configuration.

[0166] In the embodiments of the present application, for L3 switching signaling, the network side device can instruct the terminal to save the switching signaling (such as configuring the associated identifier); in subsequent L3 switching, or CHO or LTM pre-configuration, the network side device can apply the target configurations of the candidate cells by the identifier to avoid the signaling overhead caused by repeated configuration.

[0167] In an implementation, the terminal can perform connection recovery based on the target configurations.

[0168] It should be noted that in the related art, when the terminal enters the RRC_Inactive state, the configuration of the switching candidate cell pre-configured by the network side device is not saved. In the embodiments of the present application, the terminal and the network side device can retain the related configuration, so that in the connection recovery process, the network side device can instruct the terminal to apply the saved related configuration, and does not need to send the corresponding configuration on the air interface again, thereby the configuration signaling overhead can be saved.

[0169] In the embodiments of the present application, in the connection recovery, the network side device can instruct the terminal to use the saved related configuration of the current cell (i.e. the cell where the terminal initiates the connection recovery); or instruct the identifier of the target configuration to be used.

[0170] The embodiments of the present application can be used in a cellular communication system based on beamforming technology on the air interface.

[0171] In the embodiment of the present application, a terminal receives first indication information sent by a network side device, the first indication information is used to indicate a target configuration saved by the terminal, or the first indication information is used to indicate a target configuration, and the target configuration is a configuration used for configuring the terminal to work in a target cell; the terminal performs a first operation; and the first operation includes at least one of the following: performing layer 3 handover based on the target configuration; performing connection recovery based on the target configuration; and performing second handover based on the target configuration in the case that the target configuration is a configuration saved in a first handover process, and the first handover and the second handover are of different handover types, and the first handover and the second handover are both used to trigger access to the target cell. In this way, the target configuration saved by the terminal is indicated by the network side device to perform cell handover or connection recovery, and the configuration used to access the target cell does not need to be repeatedly transmitted, thereby reducing the overhead of configuration signaling.

[0172] Optionally, the first handover is layer 3 handover, and the second handover is conditional handover CHO, or layer 1 or layer 2 triggered mobility LTM handover.

[0173] Or

[0174] The first handover is CHO, and the second handover is layer 3 handover or LTM handover.

[0175] Or

[0176] The first handover is LTM handover, and the second handover is layer 3 handover or CHO.

[0177] In an embodiment, the first handover is layer 3 handover, and the second handover is conditional handover CHO or layer 1 or layer 2 triggered mobility LTM handover, thereby saving the overhead of configuration signaling of CHO or LTM handover. For example, the first indication information is carried in CHO configuration, and the terminal performs CHO based on the target configuration; or the first indication information is carried in LTM handover configuration, and the terminal performs LTM handover based on the target configuration.

[0178] In an embodiment, the first handover is CHO, and the second handover is layer 3 handover or LTM handover, thereby saving the overhead of configuration signaling of layer 3 handover or LTM handover. For example, the first indication information is carried in a handover command, and the terminal performs layer 3 handover based on the target configuration; or the first indication information is carried in LTM handover configuration, and the terminal performs LTM handover based on the target configuration.

[0179] In an implementation, the first handover is LTM handover, the second handover is layer 3 handover, or CHO, so that the overhead of configuration signaling of layer 3 handover or CHO can be saved. For example, the first indication information is carried in a handover command, and the terminal performs layer 3 handover based on the target configuration; or, the first indication information is carried in CHO handover configuration, and the terminal performs CHO based on the target configuration.

[0180] Optionally, the first indication information comprises at least one of:

[0181] an identifier of the target configuration;

[0182] an identifier of the target cell.

[0183] The identifier of the target configuration can comprise an index or a number of the target configuration, etc. Any information that can be used to identify the target configuration can be used as the identifier of the target configuration, and the present embodiment does not limit the identifier of the target configuration.

[0184] In an implementation, the network-side device can indicate the target configuration saved by the terminal to perform the first operation through the identifier of the target configuration, or the network-side device can indicate the target configuration through the identifier of the target configuration, so that the terminal can perform the first operation based on the target configuration.

[0185] In an implementation, the network-side device can indicate the target configuration saved by the terminal associated with the identifier of the target cell to perform the first operation through the identifier of the target cell, or the network-side device can implicitly indicate the target configuration through the identifier of the target cell, so that the terminal can perform the first operation based on the target configuration.

[0186] For example, in the case that the network-side device only configures a set of configurations (i.e. target configuration) for the terminal to access the target cell, the network-side device can indicate the target configuration saved by the terminal through the identifier of the target cell, so that the terminal can perform the first operation based on the target configuration.

[0187] Optionally, the target configuration is obtained through at least one of:

[0188] a handover command; a pre-configured candidate cell configuration.

[0189] The handover command can be a layer 3 handover command (or a handover command describing layer 3 handover).

[0190] In an embodiment, before the terminal receives the first indication information sent by the network side device, the terminal can receive a handover command of layer 3 handover sent by the network side device, the handover command carrying a target configuration, and the terminal can save the target configuration for next layer 3 handover or CHO or LTM handover.

[0191] In an embodiment, the preconfigured candidate cell configuration includes a target configuration. Before the terminal receives the first indication information sent by the network side device, the terminal can receive a preconfigured candidate cell configuration sent by the network side device. For example, the preconfigured candidate cell configuration can be used for CHO, and the terminal can save the target configuration for next CHO or layer 3 handover or LTM handover; or the preconfigured candidate cell configuration can be used for LTM handover, and the terminal can save the target configuration for next LTM handover or layer 3 handover or CHO.

[0192] Optionally, before the terminal receives the first indication information sent by the network side device, the method further includes:

[0193] The terminal receives second indication information sent by the network side device in the first handover process, and the second indication information is used to instruct the terminal to save the target configuration, and the saved target configuration is used for connection recovery or subsequent handover.

[0194] The terminal can save the target configuration after receiving the second indication information sent by the network side device in the first handover process. The second indication information can include a first identifier associated with the target configuration, or the second indication information can be a newly added specific signaling, and the network side device can instruct the terminal to save the target configuration through the specific signaling.

[0195] In addition, the saved target configuration is used for connection recovery or subsequent handover, which can also be described as the saved target configuration is used for the first operation. The subsequent handover can also be described as the subsequent handover.

[0196] For example, the subsequent handover can include layer 3 handover or second handover in the first operation.

[0197] In an embodiment, the second indication information can be carried in a handover command, or the second indication information can be carried in signaling used to configure a candidate cell configuration.

[0198] In this embodiment, the terminal receives second indication information sent by the network side device in the first handover process, and the second indication information is used to instruct the terminal to save the target configuration, and the saved target configuration is used for connection recovery or subsequent handover, so that the terminal can save the target configuration and apply the saved target configuration for cell handover or connection recovery, without the need to repeatedly transmit the configuration for accessing the target cell, and the overhead of configuration signaling can be reduced.

[0199] Optionally, the second indication information includes a first identifier associated with the target configuration.

[0200] In one embodiment, when the value of the first identifier is a preset value, it is instructed that the terminal saves the target configuration; and when the value of the first identifier is not the preset value, it is instructed that the terminal does not save the target configuration.

[0201] In one embodiment, the terminal receives second signaling sent by the network side device, and when the first identifier is carried in the second signaling, it is instructed that the terminal saves the target configuration; and when the first identifier is not carried in the second signaling, it is instructed that the terminal does not save the target configuration.

[0202] Optionally, the first indication information is carried in first signaling, and the first signaling also carries a parameter value of at least one first configuration parameter.

[0203] If the target configuration includes the first configuration parameter, in the process of applying the target configuration by the terminal, the terminal updates the parameter value of the first configuration parameter in the target configuration to the parameter value of the first configuration parameter carried in the first signaling; or

[0204] If the target configuration does not include the first configuration parameter, in the process of applying the target configuration by the terminal, the terminal adds the parameter value of the first configuration parameter to the target configuration.

[0205] The first signaling can be a handover command, or the first signaling can be CHO configuration signaling, or the first signaling can be LTM handover configuration signaling, or the first signaling can be a response message to a connection recovery request message.

[0206] In one embodiment, the parameter value of the first configuration parameter carried in the first signaling can be used to replace the parameter value of the corresponding first configuration parameter in the target configuration. For example, the target configuration includes the values of three parameters (such as parameter O, parameter P, and parameter Q), and the first signaling carries the value of one of the three parameters (such as parameter P), and then the terminal applies the values of parameter O and parameter Q included in the target configuration, and the value of parameter P carried in the first signaling to access the target cell.

[0207] In an implementation, the parameter values of the first configuration parameters carried in the first signaling can be used to supplement the target configuration. For example, the target configuration contains the values of three parameters (e.g., parameter O, parameter P, and parameter Q), and the first signaling carries the value of one parameter (e.g., parameter T). The terminal applies the values of the parameters O, P, and Q contained in the target configuration and the value of the parameter T carried in the first signaling to access or connect to the target cell.

[0208] In the embodiments of the present application, when the network side device applies the saved target configuration of the candidate cell, the terminal can apply the values of the domains that can be reused. It can be agreed by the protocol which domains can be reused or not, and a default value is specified to replace the value that cannot be reused. Or the network side device carries the new values of the domains that need to be changed to replace the saved values.

[0209] Optionally, before the terminal receives the first indication information sent by the network side device, the method further comprises:

[0210] The terminal sends a connection recovery request message to the network side device.

[0211] The terminal receives the first indication information sent by the network side device, comprising:

[0212] The terminal receives the response message to the connection recovery request message sent by the network side device, wherein the first indication information is carried in the response message.

[0213] The response message to the connection recovery request message can be a connection recovery message.

[0214] In this implementation, the terminal sends a connection recovery request message to the network side device, and the terminal receives a response message to the connection recovery request message sent by the network side device, wherein the first indication information is carried in the response message, so that the network side device can indicate the terminal to apply the saved target configuration for connection recovery through the response message, without the need to repeatedly transmit the configuration for accessing the target cell, thereby reducing the overhead of configuration signaling in the connection recovery process.

[0215] The communication operation execution method is further described below through several examples:

[0216] Example 1:

[0217] In this example, the target configuration of the candidate cell pre-configured by the NW for the terminal is used for handover.

[0218] Step (1): The UE receives the target configuration of Cell A sent by the NW side.

[0219] The Cell A is a primary serving cell PCell (including but not limited to a primary serving cell of an RRC connected UE triggered by a traditional L3 handover or LTM, etc.) or a target PSCell of a primary secondary serving cell PSCell change (including but not limited to a PSCell change of an RRC connected UE triggered by a traditional L3 PSCell change procedure or LTM, etc.).

[0220] The target configuration of the Cell A is used in a PCell or PSCell change procedure, and at least includes a configuration for accessing the Cell A, or includes a configuration applied after the change procedure ends.

[0221] The target configuration of the Cell A is associated with an identifier; the identifier corresponds to the target configuration of the Cell A. If the NW sends the target configurations of Cell A, Cell B, and Cell C to the UE, the values of the identifiers corresponding to the target configurations of Cell A, Cell B, and Cell C are different; or if the NW sends N sets of target configurations of Cell A to the UE, the N sets of target configurations of Cell A correspond to N different identifier values.

[0222] For example: the NW sends the target configurations of Cell A, Cell B, and Cell C to the UE, wherein the target configuration of Cell A is 2 sets, and the target configurations of Cell B and Cell C are 1 set respectively. Then, the identifiers corresponding to the target configuration 1 of Cell A, the target configuration 2 of Cell A, the target configuration of Cell B, and the target configuration of Cell C are 1, 2, 3, and 4 respectively.

[0223] The target configuration of Cell A can be sent to the UE by a layer 3 handover command or a PSCell change command, that is, after the UE receives the target configuration of Cell A, the UE applies the received target configuration of Cell A to access cell A, and saves the target configuration of Cell A for subsequent PCell and PSCell change procedures, including but not limited to traditional layer 3 handover, LTM, or CHO or CPAC configuration.

[0224] Step (2): the UE saves the received target configuration of Cell A based on the indication of the NW. The indication can be carried in the layer 3 handover command or the PSCell change command; the indication can be an identifier value associated with the target configuration of the Cell A, for example, when the handover command carries the identifier value, the UE saves the target configuration of the Cell A; otherwise, the UE does not save the target configuration of the Cell A.

[0225] Step (3): UE receives the layer 3 handover command or PSCell change command sent by the NW, which contains the identification of the target configuration (i.e. the first indication information).

[0226] The UE performs a first operation:

[0227] If the target configuration identification is 1, the UE applies the parameter values in the target configuration 1 of Cell A to hand in or access Cell A;

[0228] If the target configuration identification is 2, the UE applies the parameter values in the target configuration 2 of Cell A to hand in or access Cell A;

[0229] If the target configuration identification is 3, the UE applies the parameter values in the target configuration of Cell B to hand in or access Cell B.

[0230] In an embodiment, the layer 3 handover command or PSCell change command can optionally contain the delta configuration of the target configuration indicated or associated by the target configuration identification.

[0231] The delta configuration can be used to replace the values of the corresponding parameters in the target configuration. For example: the target configuration contains the values of 5 parameters (such as parameter O, parameter P, parameter Q, parameter R, and parameter S), and the layer 3 handover command or PSCell change command carries the values of two parameters (such as parameter P and parameter Q) among the 5 parameters, then the UE applies the values of parameter O, parameter R, and parameter S contained in the target configuration, and the values of parameter P and parameter Q carried in the layer 3 handover command or PSCell change command, to hand in or access the target cell.

[0232] In an embodiment, the layer 3 handover command or PSCell change command can optionally contain the configuration not indicated by the target configuration indicated or associated by the target configuration identification.

[0233] For example: the target configuration contains the values of 5 parameters (such as parameter O, parameter P, parameter Q, parameter R, and parameter S), and the layer 3 handover command or PSCell change command carries the value of one parameter (such as parameter T), then the UE applies the values of parameter O, parameter P, parameter Q, parameter R, and parameter S contained in the target configuration, and the value of parameter T carried in the layer 3 handover command or PSCell change command, to hand in or access the target cell.

[0234] Example 2:

[0235] In this example, the NW pre-configures the target configuration of the candidate cell for the CHO or CPAC configuration for the terminal.

[0236] Step (1) is the same as Example 1.

[0237] Step (2): The UE saves the target configuration 1 of Cell A, the target configuration 2 of Cell A, the target configuration of Cell B and the target configuration of Cell C based on the indication of the NW; the corresponding identifiers are 1, 2, 3 and 4 respectively.

[0238] Step (3): The UE receives the CHO configuration sent by the NW. In the CHO configuration, the target configuration of the candidate cell is directly replaced by the identifier of the target configuration (i.e. the first indication information).

[0239] For example, condRRCReconfig-r16 is replaced by condRRCReconfigIndex, which can achieve the purpose of reducing the configuration signaling overhead:

[0240]

[0241]

[0242] Similarly, for the LTM process, the preconfigured target configuration of Cell A can be replaced by the identifier associated with the stored target configuration of Cell A, which can achieve the purpose of reducing the configuration signaling overhead.

[0243] Example 3:

[0244] In this example, the NW preconfigures the target configuration of the candidate cell for the RRC connection recovery process 1.

[0245] Step (1) is the same as Example 1.

[0246] Step (2): The UE saves the target configuration 1 of Cell A, the target configuration 2 of Cell A, the target configuration of Cell B and the target configuration of Cell C based on the indication of the NW; the corresponding identifiers are 1, 2, 3 and 4 respectively.

[0247] Step (3): The UE receives the indication signaling of the NW, which is used to indicate the release of the RRC connection and the entering of the RRC_Inactive state; the UE releases the RRC connection and enters the RRC_Inactive state according to the indication.

[0248] Step (4): As shown in Figure 4 , the UE selects Cell A for connection recovery and initiates a connection recovery request.

[0249] Step (5): UE receives the feedback message sent by NW, and the identification value of the target configuration included in the feedback message (i.e., the first indication information) is 2; the first operation performed by the UE includes that the UE applies the configuration corresponding to the identification value 2 (i.e., the target configuration 2 of Cell A); optionally, in the feedback message of NW, part of the parameter values of the target configuration of Cell A can be carried to replace the values in the target configuration 2 of Cell A for the UE to apply.

[0250] Step (6): UE sends a connection resume complete message to end the RRC connection resume procedure.

[0251] Example 4:

[0252] In this example, the NW pre-configures the target configurations of the candidate cells for the terminal to use in the RRC connection resume procedure 2.

[0253] Step (1) is the same as in Example 1.

[0254] Step (2): UE saves the target configuration of Cell A, the target configuration of Cell B, and the target configuration of Cell C based on the indication of NW; the corresponding identifications are 1, 3, and 4, respectively. That is, each cell can only be configured with one set of target configuration.

[0255] Step (3): UE receives the indication signaling of NW, which is used to indicate to release the RRC connection and enter the RRC_Inactive state; UE releases the RRC connection and enters the RRC_Inactive state according to the indication.

[0256] Step (4): as shown in Figure 4 , UE selects Cell A for connection recovery and initiates a connection recovery request.

[0257] Step (5): UE receives the feedback message sent by NW, and the first indication information included in the feedback message is used to indicate that the UE applies the target configuration of the current serving cell (i.e., Cell A) saved by the UE; the first operation performed by the UE includes that the UE applies the target configuration of Cell A, that is, the UE directly applies the saved target configuration associated with the current cell; optionally, in the feedback message sent by NW, part of the parameter values of the target configuration of Cell A can be carried to replace the values in the target configuration of Cell A for the UE to apply.

[0258] Step (6): UE sends a connection resume complete message to end the RRC connection resume procedure.

[0259] In the embodiments of the present application, the UE saves the received target cell configuration, which is applied to subsequent conventional handover (such as handover process triggered by RRC signaling sent by the NW), LTM handover configuration, and CHO or CPAC configuration, which can reduce the repeated transmission process of the target cell configuration in the air interface, and reduce the signaling overhead of the air interface. Considering that the UE is usually located at the cell edge when the NW triggers the handover, and the signal quality is poor, a smaller handover command is more likely to be successfully received by the UE. If the saved target cell configuration is used for subsequent conventional handover, the size of the handover signaling is reduced, and the possibility of successful reception of the handover signaling by the UE is improved, thereby improving the probability of successful handover.

[0260] Referring to Figure 6 , Figure 6 is a flowchart of a communication operation execution method provided by the embodiments of the present application, as shown in Figure 6 The communication operation execution method comprises the following steps:

[0261] Step 201, the network side device sends first indication information to the terminal, the first indication information is used to indicate that the terminal applies the saved target configuration to execute a first operation, or the first indication information is used to indicate a target configuration, the target configuration is a configuration used to configure the terminal to work in a target cell;

[0262] The first operation comprises at least one of the following:

[0263] performing layer 3 handover;

[0264] performing connection recovery;

[0265] In the case where the target configuration is the configuration saved in the first handover process, performing a second handover, the handover types of the first handover and the second handover are different, and the first handover and the second handover are both used to trigger access to the target cell.

[0266] The target configuration can be used to execute the first operation.

[0267] Optionally, the first handover is layer 3 handover, and the second handover is CHO or layer 1 or layer 2 triggered mobility LTM handover;

[0268] Or

[0269] The first handover is CHO, and the second handover is layer 3 handover or LTM handover;

[0270] Or

[0271] The first handover is LTM handover, and the second handover is layer 3 handover or CHO.

[0272] Optionally, the first indication information comprises at least one of the following:

[0273] an identifier of the target configuration;

[0274] an identifier of the target cell.

[0275] Optionally, the target configuration is obtained by at least one of the following:

[0276] a handover command; a pre-configured candidate cell configuration.

[0277] Optionally, before the network-side device sends the first indication information to the terminal, the method further comprises:

[0278] the network-side device sends second indication information to the terminal, the second indication information being used to instruct the terminal to save the target configuration, and the saved target configuration being used for connection resumption or subsequent handover.

[0279] Optionally, the second indication information comprises a first identifier associated with the target configuration.

[0280] Optionally, before the network-side device sends the first indication information to the terminal, the method further comprises:

[0281] the network-side device receives a connection resumption request message sent by the terminal;

[0282] the network-side device sends the first indication information to the terminal, comprising:

[0283] the network-side device sends a response message to the terminal, wherein the first indication information is carried in the response message.

[0284] It should be noted that the embodiment is an implementation of the network-side device corresponding to the embodiment shown in Figure 5 , and the specific implementation can be referred to the related description of the embodiment shown in Figure 5 , and thus the embodiment will not be described again.

[0285] The communication operation execution method provided in the embodiment of the application can be executed by a communication operation execution device. In the embodiment of the application, the communication operation execution device is taken as an example to illustrate the communication operation execution device provided in the embodiment of the application.

[0286] The embodiment of the present application provides a communication operation execution device. As an example, the communication operation execution device can be a communication device or a component in the communication device, such as a chip. The communication device can be a terminal, a network side device or a server, etc. For example, the terminal can include but is not limited to the types of the terminal 11 listed above, the network side device can include but is not limited to the types of the network side device 12 listed above, and the embodiment of the present application is not limited specifically.

[0287] The communication operation execution device includes a receiving module, a sending module and a processing module. The receiving module, the sending module and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor. For example, the processor can include a general processor, a special purpose processor, etc., such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA) or other programmable logic devices, a gate circuit, a transistor, a discrete hardware component, etc. The receiving module and the sending module can be implemented by a communication interface, which can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, etc.

[0288] Specifically, referring to Figure 7 When the communication operation execution device is a terminal or a component in the terminal, the communication operation execution device 300 includes:

[0289] The receiving module 301 is configured to receive first indication information sent by a network side device, wherein the first indication information is used to indicate a target configuration saved by the terminal, or the first indication information is used to indicate a target configuration, and the target configuration is a configuration used to configure the terminal to work in a target cell.

[0290] The processing module 302 is configured to perform a first operation.

[0291] The first operation includes at least one of the following:

[0292] Performing layer 3 switching based on the target configuration;

[0293] perform connection recovery based on the target configuration;

[0294] perform a second handover based on the target configuration, in a case that the target configuration is a configuration saved in a first handover, the first handover and the second handover are of different handover types, and the first handover and the second handover are both used to trigger accessing the target cell.

[0295] Optionally, the first handover is a layer 3 handover, and the second handover is a conditional handover (CHO) or a layer 1 or layer 2 triggered mobility (LTM) handover.

[0296] or

[0297] the first handover is a CHO, and the second handover is a layer 3 handover or an LTM handover.

[0298] or

[0299] the first handover is an LTM handover, and the second handover is a layer 3 handover or a CHO.

[0300] Optionally, the first indication information includes at least one of the following:

[0301] an identifier of the target configuration;

[0302] an identifier of the target cell.

[0303] Optionally, the target configuration is acquired by at least one of the following:

[0304] a handover command; or a pre-configured candidate cell configuration.

[0305] Optionally, the receiving module is further configured to receive, in a first handover process, second indication information sent by the network side device, the second indication information being used to instruct the terminal to save the target configuration, and the saved target configuration being used for connection recovery or subsequent handover.

[0306] Optionally, the second indication information includes a first identifier associated with the target configuration.

[0307] Optionally, the first indication information is carried in first signaling, and at least one parameter value of a first configuration parameter is also carried in the first signaling.

[0308] If the target configuration includes the first configuration parameter, in a process in which the terminal applies the target configuration, the terminal updates a parameter value of the first configuration parameter in the target configuration to the parameter value of the first configuration parameter carried in the first signaling; or

[0309] If the target configuration does not include the first configuration parameter, the terminal adds a parameter value of the first configuration parameter to the target configuration in a process of applying the target configuration.

[0310] Optionally, the apparatus further includes:

[0311] a sending module, configured to send a connection resumption request message to the network-side device;

[0312] The receiving module is specifically configured to receive a response message to the connection resumption request message sent by the network-side device, wherein the first indication information is carried in the response message.

[0313] Embodiments of the present application can reduce the overhead of configuration signaling.

[0314] Referring to Figure 8 When the communication operation execution apparatus is a network-side device or a component in a network-side device, the communication operation execution apparatus 400 includes:

[0315] a sending module 401, configured to send first indication information to a terminal, the first indication information being used to instruct the terminal to apply a saved target configuration to perform a first operation, or the first indication information being used to instruct a target configuration, the target configuration being a configuration used to configure the terminal to work in a target cell;

[0316] The first operation includes at least one of the following:

[0317] performing layer 3 handover;

[0318] performing connection resumption;

[0319] In a case where the target configuration is a configuration saved in a first handover process, performing a second handover, the first handover and the second handover being different in handover type, and the first handover and the second handover both being used to trigger access to the target cell.

[0320] Optionally, the first handover is layer 3 handover, and the second handover is CHO or layer 1 or layer 2 triggered mobility LTM handover.

[0321] Or

[0322] The first handover is CHO, and the second handover is layer 3 handover or LTM handover.

[0323] Or

[0324] The first handover is LTM handover, and the second handover is layer 3 handover or CHO.

[0325] Optionally, the first indication information includes at least one of the following:

[0326] an identity of the target configuration;

[0327] an identity of the target cell.

[0328] Optionally, the target configuration is acquired by at least one of the following:

[0329] a handover command; a pre-configured candidate cell configuration.

[0330] Optionally, the sending module is further configured to:

[0331] send second indication information to the terminal in the first handover process, the second indication information being used to instruct the terminal to save the target configuration, and the saved target configuration being used for connection resumption or subsequent handover.

[0332] Optionally, the second indication information comprises a first identity associated with the target configuration.

[0333] Optionally, the apparatus further comprises:

[0334] a receiving module configured to receive a connection resumption request message sent by the terminal;

[0335] the sending module is specifically configured to:

[0336] send a response message to the connection resumption request message to the terminal, wherein the first indication information is carried in the response message.

[0337] The embodiments of the present application can reduce the overhead of configuration signaling.

[0338] The communication operation execution apparatus provided by the embodiments of the present application can implement each process of the method embodiments and achieve the same technical effects. To avoid repetition, each process will not be described here. Figure 5 to Figure 6

[0339] As shown in Figure 9 the embodiments of the present application further provide a communication device 500, which comprises a processor 501 and a memory 502, and the memory 502 stores programs or instructions that can be run on the processor 501. For example, when the communication device 500 is a terminal, the programs or instructions are executed by the processor 501 to implement each step of the communication operation execution method embodiments described above, and achieve the same technical effects. When the communication device 500 is a network side device, the programs or instructions are executed by the processor 501 to implement each step of the communication operation execution method embodiments described above, and achieve the same technical effects. To avoid repetition, each step will not be described here.

[0340] ​The terminal provided in the embodiments of the present application also includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run programs or instructions to implement the steps in the method embodiments shown in the above. Figure 5 The terminal embodiments correspond to the terminal-side method embodiments described above, and each implementation process and implementation manner of the method embodiments described above can be applied to the terminal embodiments, and the same technical effects can be achieved. The terminal can be a communication operation execution device as shown in the above. Figure 7 Figure 10 A hardware structure diagram of a terminal for implementing the embodiments of the present application.

[0341] The terminal 600 includes, but is not limited to, at least part of the components such as a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610.

[0342] Those skilled in the art can understand that the terminal 600 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected with the processor 610 through a power management system, so as to realize the functions of power management, such as charging, discharging, and power consumption management, through the power management system. Figure 10 The terminal structure shown in the above does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown, or combine certain components, or have different component arrangements, which are not described here.

[0343] It should be understood that in the embodiments of the present application, the input unit 604 can include a graphics processor 6041 and a microphone 6042, and the graphics processor 6041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 can include a display panel 6061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 can include two parts of a touch detection device and a touch controller. The other input devices 6072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, etc., which are not described here.

[0344] ​In the embodiments of the present application, the radio frequency unit 601 can transmit the downlink data received from the network side device to the processor 610 for processing. In addition, the radio frequency unit 601 can send uplink data to the network side device. Generally, the radio frequency unit 601 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0345] The memory 609 can be used to store software programs or instructions and various data. The memory 609 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, at least one application program or instruction required by a function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 609 can include a volatile memory or a non-volatile memory. 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), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 609 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0346] The processor 610 can include one or more processing units; optionally, the processor 610 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 610.

[0347] The radio frequency unit 601 is configured to receive first indication information sent by a network side device, the first indication information being used for indicating a target configuration saved by the terminal or being used for indicating the target configuration, the target configuration being a configuration used for configuring the terminal to work in a target cell.

[0348] The processor 610 is configured to perform a first operation.

[0349] The first operation includes at least one of the following:

[0350] Performing layer 3 switching based on the target configuration.

[0351] Performing connection recovery based on the target configuration.

[0352] In a case where the target configuration is a configuration saved in a first switching process, performing second switching based on the target configuration, the switching types of the first switching and the second switching are different, and the first switching and the second switching are both used for triggering access to the target cell.

[0353] Optionally, the first switching is layer 3 switching, and the second switching is conditional handover (CHO) or layer 1 or layer 2 triggered mobility (LTM) switching.

[0354] Or

[0355] The first switching is CHO, and the second switching is layer 3 switching or LTM switching.

[0356] Or

[0357] The first switching is LTM switching, and the second switching is layer 3 switching or CHO.

[0358] Optionally, the first indication information includes at least one of the following:

[0359] An identifier of the target configuration.

[0360] An identifier of the target cell.

[0361] Optionally, the target configuration is obtained through at least one of the following:

[0362] A handover command; or a preconfigured candidate cell configuration.

[0363] Optionally, the radio frequency unit 601 is further configured to receive second indication information sent by the network side device in the first switching process, the second indication information being used for indicating that the terminal saves the target configuration, and the saved target configuration being used for connection recovery or subsequent switching.

[0364] Optionally, the second indication information includes a first identifier associated with the target configuration.

[0365] Optionally, the first indication information is carried in first signaling, and a parameter value of at least one first configuration parameter is also carried in the first signaling.

[0366] If the target configuration includes the first configuration parameter, in a process of applying the target configuration by the terminal, the terminal updates a parameter value of the first configuration parameter in the target configuration to the parameter value of the first configuration parameter carried in the first signaling; or

[0367] If the target configuration does not include the first configuration parameter, in a process of applying the target configuration by the terminal, the terminal adds the parameter value of the first configuration parameter to the target configuration.

[0368] Optionally, the radio frequency unit 601 is further configured to:

[0369] send a connection recovery request message to the network side device;

[0370] receive a response message of the connection recovery request message sent by the network side device, wherein the first indication information is carried in the response message.

[0371] It can be understood that the implementation process of each implementation manner mentioned in the embodiment can refer to the related description of the method embodiment Figure 5 , and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0372] The embodiment of the application also provides a network side device, which comprises a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to realize the steps of the method embodiment as shown in Figure 6 . The network side device embodiment corresponds to the network side device method embodiment described above. Each implementation process and implementation manner of the method embodiment described above can be applied to the network side device embodiment, and the same technical effects can be achieved.

[0373] Specifically, the embodiment of the application further provides a network side device, which can be Figure 8 a communication operation execution apparatus as shown in Figure 11As shown, the network-side device 700 includes an antenna 701, a radio frequency device 702, a baseband device 703, a processor 704, and a memory 705. The antenna 701 is connected with the radio frequency device 702. In the uplink direction, the radio frequency device 702 receives information through the antenna 701, and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes information to be sent, and sends the processed information to the radio frequency device 702, which processes the received information and sends it out through the antenna 701.

[0374] The method performed by the network-side device in the above embodiments can be implemented in the baseband device 703, which includes a baseband processor.

[0375] The baseband device 703 may, for example, include at least one baseband board on which a plurality of chips are disposed, such as Figure 11 As shown, one of the chips is, for example, a baseband processor, which is connected with the memory 705 through a bus interface to call programs in the memory 705 and perform the operations of the network-side device shown in the above method embodiments.

[0376] The network-side device may, for example, further include a network interface 706, which is, for example, a common public radio interface (CPRI).

[0377] Specifically, the network-side device 700 of the embodiments of the present application further includes instructions or programs stored in the memory 705 and executable on the processor 704, and the processor 704 calls the instructions or programs in the memory 705 to perform the methods performed by the modules shown in Figure 8 As shown, the modules perform the methods and achieve the same technical effects, and thus will not be described here in detail.

[0378] Specifically, the embodiments of the present application further provide a network-side device. As shown in Figure 12 The network-side device 800 includes a processor 801, a network interface 802, and a memory 803. The network-side device may, for example, be a communication operation execution device as shown. Figure 8 The network interface 802 is, for example, a common public radio interface (CPRI).

[0379] Specifically, the network-side device 800 of the embodiments of the present application further includes instructions or programs stored in the memory 803 and executable on the processor 801, and the processor 801 calls the instructions or programs in the memory 803 to perform the methods performed by the modules shown in Figure 8 As shown, the modules perform the methods and achieve the same technical effects, and thus will not be described here in detail.

[0380] The embodiment of the application further provides a readable storage medium, which stores a program or instructions, and the program or instructions are executed by a processor to realize each process of the communication operation execution method embodiment and achieve the same technical effects. To avoid repetition, details are not described herein.

[0381] The processor is the processor in the terminal or the network side device in the above-mentioned embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0382] The embodiment of the application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a program or instructions to realize each process of the communication operation execution method embodiment and achieve the same technical effects. To avoid repetition, details are not described herein.

[0383] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0384] The embodiment of the application further provides a computer program / program product, which is stored in a storage medium and is executed by at least one processor to realize each process of the communication operation execution method embodiment and achieve the same technical effects. To avoid repetition, details are not described herein.

[0385] The embodiment of the application further provides a wireless communication system, which includes a terminal and a network side device. The terminal can be used to execute the steps of the communication operation execution method applied to the terminal. The network side device can be used to execute the steps of the communication operation execution method applied to the network side device.

[0386] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or the like does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the methods and apparatuses of the present application can be carried out by specific hardware, by software, or by a combination of hardware and software. It is therefore, contemplated to this patent to cover any and all modifications, variations, or equivalents that fall within the scope of the present application. Accordingly, where a concept can have been illustrated in only one of the exemplary embodiments, various aspects of the concept can be modified and / or combined to produce a variety of other embodiments that are not specifically illustrated. Thus, for purposes of describing particular embodiments, reference has been made to orientations. However, it is to be understood that the teachings of this patent are not limited in their application to any one of the mentioned orientations, but are applicable to any assembly having the features currently described or hereinafter ascertained.

[0387] From the above description of the embodiments, it is apparent that the method of the above embodiments can be realized by means of a computer software product and general hardware platform, of course, it can also be realized by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), and includes a plurality of instructions for making the terminal or network side equipment execute the method described in each embodiment of the present application.

[0388] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative, but not restrictive. Those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims, and these embodiments all belong to the protection scope of the present application.

Claims

1. A method for performing a communication operation, characterized in that, include: The terminal receives first indication information sent by the network-side device. The first indication information is used to indicate the target configuration saved by the terminal application, or the first indication information is used to indicate the target configuration, which is a configuration used to configure the terminal to work in the target cell. The terminal performs the first operation; The first operation includes at least one of the following: Perform layer 3 switching based on the target configuration; Restore the connection based on the target configuration; If the target configuration is the configuration saved during the first handover, a second handover is performed based on the target configuration. The handover types of the first handover and the second handover are different, and both the first handover and the second handover are used to trigger access to the target cell.

2. The method according to claim 1, characterized in that, The first handover is a Layer 3 handover, and the second handover is a conditional handover (CHO) or a mobility LTM handover triggered by Layer 1 or Layer 2. or The first switch is a CHO, and the second switch is a Layer 3 switch or an LTM switch; or The first switch is an LTM switch, and the second switch is a Layer 3 switch or a CHO switch.

3. The method according to claim 1 or 2, characterized in that, The first indication information includes at least one of the following: The identifier of the target configuration; The identifier of the target cell.

4. The method according to any one of claims 1-3, characterized in that, The target configuration is obtained through at least one of the following: Handover command; pre-configured candidate cell configuration.

5. The method according to any one of claims 1-4, characterized in that, Before the terminal receives the first indication information sent by the network-side device, the method further includes: During the first handover process, the terminal receives a second indication message sent by the network-side device. The second indication message is used to instruct the terminal to save the target configuration. The saved target configuration is used for connection recovery or subsequent handover.

6. The method according to claim 5, characterized in that, The second indication information includes a first identifier associated with the target configuration.

7. The method according to any one of claims 1-6, characterized in that, The first indication information is carried in the first signaling, and the first signaling also carries the parameter value of at least one first configuration parameter; If the target configuration includes the first configuration parameter, then during the process of the terminal applying the target configuration, the terminal updates the parameter value of the first configuration parameter in the target configuration to the parameter value of the first configuration parameter carried in the first signaling. or If the target configuration does not include the first configuration parameter, then during the process of applying the target configuration on the terminal, the terminal adds the parameter value of the first configuration parameter to the target configuration.

8. The method according to any one of claims 1-7, characterized in that, Before the terminal receives the first indication information sent by the network-side device, the method further includes: The terminal sends a connection restoration request message to the network-side device; The terminal receives first indication information sent by the network-side device, including: The terminal receives a response message to the connection restoration request message sent by the network-side device, wherein the first indication information is carried in the response message.

9. A method for performing a communication operation, characterized in that, include: The network-side device sends a first indication message to the terminal. The first indication message is used to instruct the terminal to perform a first operation by applying a target configuration stored therein, or the first indication message is used to instruct the target configuration, which is a configuration used to configure the terminal to work in a target cell. The first operation includes at least one of the following: Perform a layer 3 switch; Restore connection; If the target configuration is the configuration saved during the first handover, a second handover is performed. The handover types of the first handover and the second handover are different. Both the first handover and the second handover are used to trigger access to the target cell.

10. The method according to claim 9, characterized in that, The first handover is a Layer 3 handover, and the second handover is a CHO, or a mobility LTM handover triggered by Layer 1 or Layer 2. or The first switch is a CHO, and the second switch is a Layer 3 switch or an LTM switch; or The first switch is an LTM switch, and the second switch is a Layer 3 switch or a CHO switch.

11. The method according to claim 9 or 10, characterized in that, The first indication information includes at least one of the following: The identifier of the target configuration; The identifier of the target cell.

12. The method according to any one of claims 9-11, characterized in that, The target configuration is obtained through at least one of the following: Handover command; pre-configured candidate cell configuration.

13. The method according to any one of claims 9-12, characterized in that, Before the network-side device sends the first indication information to the terminal, the method further includes: During the first handover process, the network-side device sends a second instruction message to the terminal. The second instruction message is used to instruct the terminal to save the target configuration. The saved target configuration is used for connection recovery or subsequent handover.

14. The method according to claim 13, characterized in that, The second indication information includes a first identifier associated with the target configuration.

15. The method according to any one of claims 9-14, characterized in that, Before the network-side device sends the first indication information to the terminal, the method further includes: The network-side device receives the connection restoration request message sent by the terminal; The network-side device sends a first indication message to the terminal, including: The network-side device sends a response message to the terminal in response to the connection restoration request message, wherein the first indication information is carried in the response message.

16. A communication operation execution device, characterized in that, include: The receiving module is configured to receive first indication information sent by the network-side device, wherein the first indication information is used to indicate the target configuration saved by the terminal application, or the first indication information is used to indicate the target configuration, wherein the target configuration is a configuration for configuring the terminal to work in the target cell; The processing module is used to perform the first operation; The first operation includes at least one of the following: Perform layer 3 switching based on the target configuration; Restore the connection based on the target configuration; If the target configuration is the configuration saved during the first handover, a second handover is performed based on the target configuration. The handover types of the first handover and the second handover are different, and both the first handover and the second handover are used to trigger access to the target cell.

17. The apparatus according to claim 16, characterized in that, The receiving module is further configured to: receive second indication information sent by the network-side device during the first handover process, the second indication information being used to instruct the terminal to save the target configuration, the saved target configuration being used for connection recovery or subsequent handover.

18. The apparatus according to claim 16 or 17, characterized in that, The device further includes: The sending module is used to send a connection restoration request message to the network-side device; The receiving module is specifically used to: receive a response message sent by the network-side device to the connection restoration request message, wherein the first indication information is carried in the response message.

19. A communication operation execution device, characterized in that, include: The sending module is used to send first indication information to the terminal, the first indication information being used to instruct the terminal to perform a first operation based on a target configuration saved by the application, or the first indication information being used to instruct the target configuration, the target configuration being a configuration for configuring the terminal to work in a target cell; The first operation includes at least one of the following: Perform a layer 3 switch; Restore connection; If the target configuration is the configuration saved during the first handover, a second handover is performed. The handover types of the first handover and the second handover are different. Both the first handover and the second handover are used to trigger access to the target cell.

20. The apparatus according to claim 19, characterized in that, The sending module is also used for: During the first handover process, a second instruction message is sent to the terminal. The second instruction message is used to instruct the terminal to save the target configuration. The saved target configuration is used for connection recovery or subsequent handover.

21. The apparatus according to claim 19 or 20, characterized in that, The device further includes: The receiving module is used to receive the connection restoration request message sent by the terminal; The sending module is specifically used for: A response message to the connection restoration request message is sent to the terminal, wherein the first indication information is carried in the response message.

22. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the communication operation execution method as described in any one of claims 1-8.

23. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the communication operation execution method as described in any one of claims 9-15.

24. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions, which, when executed by a processor, implement the steps of the communication operation execution method as described in any one of claims 1-8, or implement the steps of the communication operation execution method as described in any one of claims 9-15.

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