WO2020252709A1

WO2020252709A1 - Wireless communication method, network device, and terminal device

Info

Publication number: WO2020252709A1
Application number: PCT/CN2019/091958
Authority: WO
Inventors: 唐海
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-12-24
Also published as: CN112806060B; CN112806060A

Abstract

Disclosed in embodiments of the present application are a wireless communication method, a network device, and a terminal device. The method comprises: a source network device sends, to a terminal device, a first pre-handover command generated by a target network device, the first pre-handover command being used by the terminal device for obtaining first configuration information for handing over to the target network device; the source network device sends second configuration information to the terminal device, the second configuration information being the updated first configuration information. The method, the network device and the terminal device in the embodiments of the present application can improve the probability of handover success.

Description

Wireless communication method, network equipment and terminal equipment

Technical field

The embodiments of the present application relate to the field of communications, and specifically relate to a wireless communication method, network device, and terminal device.

Background technique

The traditional handover process is: the source network device sends a handover request to the target network device according to the measurement report reported by the terminal device, and then forwards the handover command generated by the target network device to the terminal device after receiving the response of the target network device to the handover request. The terminal device immediately executes the switching process after receiving the switching command, that is, the terminal device disconnects from the source network device and accesses the target network device.

For high-speed mobile scenarios and high-frequency deployment scenarios, there may be frequent handovers and handover problems that are likely to fail.

Summary of the invention

The embodiments of the present application provide a wireless communication method, network equipment, and terminal equipment, which are beneficial to improve the probability of successful handover.

In a first aspect, a wireless communication method is provided. The method includes: a source network device sends a first pre-handover command generated by a target network device to a terminal device, where the first pre-handover command is used by the terminal device to obtain To switch to the first configuration information of the target network device; the source network device sends second configuration information to the terminal device, where the second configuration information is the updated first configuration information.

In a second aspect, a wireless communication method is provided. The method includes: a target network device sends a first pre-handover command to a source network device, where the first pre-handover command is used by the terminal device to obtain a switch to the target network device The first configuration information; the target network device sends a second pre-handover command to the source network device, the second pre-handover command is used by the terminal device to obtain a second switch to the target network device Configuration information, the second pre-switch command is the updated first pre-switch command, and the second configuration information is the updated first configuration information.

In a third aspect, a wireless communication method is provided, the method includes: a terminal device obtains first configuration information for switching to the target network device according to a first pre-handover command generated by the target network device; the terminal The device receives second configuration information sent by the source network device, where the second configuration information is the updated first configuration information.

In a fourth aspect, a network device is provided, which is used to execute the method in the first aspect or its implementation.

Specifically, the terminal device includes a functional module for executing the method in the foregoing first aspect or its implementation manner.

In a fifth aspect, a network device is provided for executing the method in the second aspect or its implementation manner.

Specifically, the terminal device includes a functional module for executing the method in the foregoing second aspect or its implementation manner.

In a sixth aspect, a terminal device is provided, which is used to execute the method in the third aspect or its implementation.

Specifically, the network device includes a functional module for executing the method in the foregoing third aspect or its implementation manner.

In a seventh aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute any one of the first aspect to the second aspect or the method in the implementation manner thereof.

In an eighth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the third aspect or its implementation.

In a ninth aspect, a chip is provided for implementing any one of the above-mentioned first to third aspects or the method in each of its implementation manners.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first aspect to the third aspect or each of its implementation modes method.

In a tenth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute any one of the above-mentioned first to third aspects or the method in each implementation manner thereof.

In an eleventh aspect, a computer program product is provided, including computer program instructions that cause a computer to execute any one of the above-mentioned first to third aspects or the method in each implementation manner thereof.

In a twelfth aspect, a computer program is provided, which, when run on a computer, causes the computer to execute any one of the above-mentioned first to third aspects or the method in each implementation manner thereof.

Through the above technical solution, the source network device will issue the pre-switching command of the target network device to the terminal device in advance, and before the terminal device is switched, if the configuration information used for switching is updated, the terminal device can be notified in time, thereby improving the terminal The success rate of the device switching to the target network device.

These and other aspects of the application will be more concise and understandable in the description of the following embodiments.

Description of the drawings

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

Fig. 2 is a schematic diagram of a general handover process provided by an embodiment of the present application.

FIG. 3 is a schematic block diagram of a wireless communication method according to an embodiment of the present application.

FIG. 4 is a schematic diagram of a condition switching process provided by an embodiment of the present application.

FIG. 5 is a schematic block diagram of a wireless communication method provided by an embodiment of the present application.

FIG. 6 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 7 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 8 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 9 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 10 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 11 is a schematic block diagram of a network device provided by an embodiment of the present application.

FIG. 12 is a schematic block diagram of a network device provided by an embodiment of the present application.

FIG. 13 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.

FIG. 15 is a schematic block diagram of a chip provided by an embodiment of the present application.

FIG. 16 is a schematic diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and broadband code Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution LTE system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, New Radio (NR) or future 5G System etc.

In particular, the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technologies, such as sparse code multiple access (SCMA) systems, low-density signatures (Low Density Signature, LDS) system, etc. Of course, the SCMA system and LDS system can also be called other names in the communication field; further, the technical solutions of the embodiments of this application can be applied to multi-carriers using non-orthogonal multiple access technology Transmission systems, such as non-orthogonal multiple access technology Orthogonal Frequency Division Multiplexing (OFDM), Filter Bank Multi-Carrier (FBMC), Generalized Frequency Division Multiplexing (Generalized Frequency Division Multiplexing) Frequency Division Multiplexing (GFDM), Filtered-OFDM (F-OFDM) systems, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network equipment gNB in 5G networks, or network equipment in the future evolution of public land mobile network (Public Land Mobile Network, PLMN), etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes but is not limited to User Equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, Terminal, wireless communication equipment, user agent or user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile network (Public Land Mobile Network, PLMN) Terminal equipment, etc., are not limited in the embodiment of the present invention.

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

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

Figure 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.

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

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as a mobility management entity (Mobility Management Entity, MME), a serving gateway (Serving Gateway, S-GW), or a packet data gateway (PDN Gateway, P-GW), etc. This is not limited in the embodiments of this application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

To facilitate understanding, the handover procedure in the existing LTE system will be described in detail below in conjunction with FIG. 2. As shown in Figure 2, the handover process mainly includes the three processes of handover preparation, handover execution, and handover completion, which specifically includes some or all of the following steps:

S201: The source eNB performs measurement configuration on the UE, and the measurement result of the UE will be used to assist the source eNB to make a handover decision.

S202: The UE performs a measurement report according to the measurement configuration.

S203: The source eNB refers to the measurement report result of the UE and makes a handover decision according to its own handover algorithm.

S204: The source eNB sends a handover request message to the target eNB. The message contains information related to handover preparation, including the UE’s X2 and S1 signaling context reference, target cell identifier, security key, and radio resource control (Radio Resource Control, RRC). ) Context, access layer (Access Stratum, AS) configuration, Evolved-Universal Terrestrial Radio Access (E-UTRAN) Radio Access Bearer (E-UTRAN, Radio Access, Bearer, E) -RAB) Context etc. At the same time, it also contains the physical layer identification of the source cell and the message authentication verification code, which is used for the recovery process after a possible handover failure. The X2 and S1 signaling context reference of the UE can help the target eNB find the location of the source eNB. E-RAB context includes necessary radio network layer (Radio Network Layer, RLN) and Transport Layer (Transport Network Layer, TNL) addressing information, and E-RAB quality of service (Quality of Service, QoS) information, etc.

S205: The target eNB performs admission control according to the received E-RAB QoS information to improve the success rate of handover. Admission control should consider reserving corresponding resources, cell radio network temporary identification (Cell Radio Network Temporary Identifier, C-RNTI), and assigning dedicated random access preamble codes. The AS configuration used by the target cell can be a complete configuration completely independent of the source cell, or it can be an incremental configuration based on the source cell (incremental configuration means that the same part is not configured, but only re-configured through signaling. With different parts, the UE will continue to use the original configuration for the configuration that has not been received).

S206: The target eNB prepares for L1/L2 handover, and at the same time sends a handover request ACK message to the source eNB. The message contains an RRC container, and the specific content is a handover command that triggers the UE to perform handover. The source eNB handover command adopts a transparent transmission mode (without any modification) and sends it to the UE. The handover command includes the new C-RNTI, the case algorithm identifier of the target eNB, and may also carry the special preamble code for random access, access parameters, system information, etc. If necessary, the handover request ACK message may also carry RNL/TNL information for data forwarding. After the source eNB receives the handover request ACK message or forwards the handover command to the UE, it can start data forwarding.

S207: The handover command (the RRC connection reconfiguration message that carries the mobility control information) is generated by the target eNB, and transparently transmitted to the UE through the source eNB. The source eNB performs necessary encryption and integrity protection on this message. When the UE receives the message, it will initiate the handover process using the relevant parameters in the message. The UE does not need to wait for the Hybrid Automatic Repeat reQuest (HARQ)/Automatic Repeat reQuest (ARQ) response sent by the lower layer to the source eNB, and can initiate the handover process.

S208: The source eNB sends a sequence number (Sequence Number, SN) status transmission message to the target eNB, and transmits E-RAB uplink packet data convergence protocol (Packet Data Convergence Protocol, PDCP) SN reception status and downlink PDCP SN transmission status. The uplink PDCP SN reception status includes at least the PDCP SN of the last uplink SDU received in sequence, and may also include the SN of the uplink SDU that caused the loss of the received disorder in the form of bit mapping (if there is such an SDU, These SDUs may require the UE to retransmit in the target cell). The downlink PDCP SN transmission status indicates the next SDU sequence number that should be allocated at the target eNB. If no E-RAB needs to transmit the PDCP status report, the source eNB can omit this message.

S209: After receiving the handover command, the UE performs synchronization with the target cell. If the special preamble code for random access is configured in the handover command, it uses the non-contention random access procedure to access the target cell. If the special preamble code is not configured, Then use the competitive random access procedure to access the target cell. The UE calculates the key to be used at the target eNB and configures the security algorithm selected by the network for use at the target eNB, which is used to communicate with the target eNB after a successful handover.

S210: The network replies to the uplink resource allocation instruction and timing advance.

S211: After the UE successfully accesses the target cell, the UE sends an RRC connection reconfiguration complete message to confirm the completion of the handover process to the target eNB. If resources permit, the message may also be accompanied by an upstream buffer status report (Buffer Status Report, BSR) improvement. The target eNB confirms the success of the handover by receiving the RRC connection reconfiguration complete message. At this point, the target eNB can start sending data to the UE.

S212: The target eNB sends a path switch request message to the MME to inform the UE that the cell has been changed. At this time, the air interface handover has been successfully completed.

S213: The MME sends a user plane update request message to the S-GW.

S214: The S-GW switches the downlink data path to the target eNB side. The S-GW sends one or more "end marker (end marker) packets" to the source eNB on the old path, and then can release the user plane resources of the source eNB.

S215: The S-GW sends a user plane update response message to the MME.

S216: The MME sends a path switch request ACK message to the target eNB. Steps 12-16 complete the path switching process, and the purpose of the process is to transfer the user plane data path from the source eNB to the target eNB. After the S-GW switches the downlink path, the downlink packets of the forward path and the new path may alternately arrive at the target eNB. The target eNB should first deliver all forwarded data packets to the UE, and then deliver the packets received from the new path. Using this method at the target eNB can forcefully ensure the correct transmission sequence. In order to assist the rearrangement function at the target eNB, the S-GW immediately sends one or more "end marker packets" on the old path after the E-RAB switches the path. The "end marker package" does not contain user data, which is indicated by the General Data Transfer Platform (GTP) header. After finishing sending the packet containing the identifier, the S-GW should not send any data packets on the old path. After receiving the "end marker packet", if forwarding is active for this bearer, the source eNB should send this packet to the target eNB. After detecting the "end marker packet", the target eNB should discard the "end marker packet" and initiate any necessary procedures to maintain the user's orderly delivery. These data are forwarded through the X2 port or transferred from the S-GW after the path is switched. Received through the S1 port.

S217: The target eNB sends a UE context release message to the source eNB to notify the source eNB of the success of the handover and trigger the source eNB to release resources. The target eNB sends this message after receiving the path switch ACK message sent back from the MME.

S218: After receiving the UE context release message, the source eNB may release the radio bearer and the control plane resources related to the UE context. Any ongoing data forwarding will continue.

However, for some special scenarios, such as high-speed movement of the UE or high frequency conditions, frequent handover (HO) of the UE is required. The traditional handover procedure may not be suitable and the problem of handover failure may easily occur.

FIG. 3 shows a schematic block diagram of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG. 3, the method 300 includes some or all of the following contents:

S310: The target network device generates a first pre-handover command;

S320: The target network device sends the first pre-handover command to the source network device, and correspondingly, the source network device receives the first pre-handover command sent by the target network device;

S330: The source network device forwards the first pre-handover command to the terminal device; correspondingly, the terminal device receives the first pre-handover command sent by the source network device;

S340: The terminal device obtains first configuration information for switching to the target network device according to the first pre-handover command.

S350: The source network device sends second configuration information to the terminal device, and correspondingly, the terminal device receives the second configuration information, where the second configuration information is the updated first configuration information;

S360: The terminal device obtains the second configuration information.

First, it should be noted that the embodiment of the present application proposes a new handover procedure, that is, conditional handover (CHO). Conditional handover avoids the problem that the handover preparation time is too long and the UE is too late to handover. You can configure the CHO command (command) for the UE in advance. On the other hand, for special scenarios such as high-speed rail, the running track of the UE is specific, so the source network device can allocate the target network device to the UE in advance, and the CHO command includes the conditions for triggering the UE to switch. When conditions are met, the UE initiates an access request to the target network device.

Specifically, FIG. 4 shows a schematic diagram of a partial condition switching process. In order to be different from the handover shown in Fig. 2 above, the handover process corresponding to Fig. 2 is referred to as normal handover (normal HO) in this application.

As shown in Figure 4, S401, measurement report, is similar to the normal handover process. The UE reports the measurement report to the source eNB. This S401 can correspond to S201 and S202 in the normal handover process shown in Figure 2 above. For the sake of brevity, it is not here. Repeat it again.

S402, handover preparation, similar to the normal handover process, the handover preparation is performed between the source eNB and the target eNB. Specifically, the source eNB may perform handover preparation with one or more target eNBs. For example, the source eNB may send a handover request to one or more target eNBs. Wherein, the handover preparation steps performed between the source eNB and any target eNB in S302 can all correspond to S203 and S204 in the ordinary handover process shown in FIG. 2. For brevity, details are not described herein again.

S403: Handover command. Multiple target cells or multiple target eNBs can be configured in the handover command sent by the source eNB to the UE. Optionally, conditions for the UE to perform handover can also be configured. For example, the handover conditions can include information such as cell or beam status, so that the UE can determine which target cell or target eNB to access based on the configured conditions.

S404: When the handover condition is met, random access is performed. The UE determines whether the configured multiple target cells or target eNB meet the handover condition according to the configured condition, and performs random access when a certain target cell or target eNB meets the condition.

In the embodiment of the present application, the first configuration information and the second configuration information are complete configurations for handover, and the first pre-handover command may refer to the complete configuration for handover, that is to say, The first pre-switching command includes all the contents of the first configuration information; the first pre-switching command may also be part of the first configuration information, for example, the pre-switching command adopts an incremental configuration method Specifically, the target network device may use the UE configuration information of the source network device as a reference, and configure the changed configuration information therein as a pre-handover command to the terminal device. The terminal device also uses the UE configuration information of the source network device to obtain the pre-handover command in an incremental configuration, and obtains the complete configuration for handover according to the UE configuration information of the source network device and the obtained pre-handover command. Among them, the complete configuration for handover may include, for example, the configuration of various protocol layers, such as the configuration of the Packet Data Convergence Protocol (PDCP) layer, the configuration of the Radio Link Control (RLC) layer, Media Access Control (MAC) layer configuration, Radio Resource Control (RRC) layer configuration, physical layer (such as random access control channel (Random access control channel, RACH)) configuration, etc. . The complete configuration for handover may also include other configurations, for example, the configuration of a random access preamble.

In the scenario of conditional switching, the switching command generated by the target network device is actually a pre-switching command. After the target network device generates the pre-switching command, the source network device will add switching execution conditions and configure it to the terminal device. However, the terminal device does not The handover will not be performed immediately. If the network side updates the configuration for handover before the handover, it may affect the terminal device to switch to the target network device, that is, the original pre-handover command may no longer be used by the terminal device, for example The data radio bearer (DRB) in the original pre-handover command cannot carry the new Quality of Service (QoS) flow. Therefore, the configuration information used for switching needs to be updated before switching.

Optionally, in the embodiment of the present application, the pre-handover command may not be generated in an incremental configuration mode, but the target network device reconfigures all configuration information used for handover. For example, the configuration of the source network device includes the configuration of each protocol layer of the PDCP layer, RLC layer, MAC layer, and physical layer. The pre-switch command generated by the target network device can also include each of the PDCP layer, RLC layer, MAC layer, and physical layer. The configuration of the protocol layer. That is to say, in the embodiment of the present application, as long as the pre-switch command is updated and the target network device configures the updated pre-switch command to the terminal device through the source network device, the terminal device can obtain the updated pre-switch command. Complete configuration information to the target network device.

Optionally, in the embodiment of the present application, the pre-switch command may be generated in a manner of incremental configuration. Specifically, the pre-handover command is generated in an incremental configuration based on the UE configuration information of the source network device. For example, the complete configuration information used for handover includes the configuration of each protocol layer of the PDCP layer, RLC layer, MAC layer, and physical layer, and the target network device is only reconfigured for the PDCP layer and MAC layer, then the pre-switch command Only include the reconfiguration of the PDCP layer and the MAC layer. After the target network device has configured the first pre-switch command to the terminal device through the source network device, the target network device can configure the updated second pre-switch command to the terminal device through the source network device again. It should be understood that the target network device can The pre-switch command is updated multiple times, and the updated pre-switch command can be configured to the terminal device through the source network device multiple times, that is, each time the pre-switch command is updated, the terminal device can be configured once. Optionally, the target network device may not update the pre-handover command, and the source network device updates the UE configuration information, then the source network device may reconfigure the UE configuration information to the terminal device. Optionally, it may also be that the target network device updates the pre-handover command, and the source network device updates the UE configuration information. As long as at least one of the pre-handover command and the UE configuration information is updated, the terminal device can re-update the complete configuration for handover.

It should be noted that in this embodiment of the application, the updated pre-handover command may be generated in an incremental configuration based on the unupdated UE configuration information, and the updated pre-handover command may also be based on the updated UE. The configuration information is generated by incremental configuration, but in either way, after the terminal device receives the updated pre-handover command, it must be clear that the updated pre-handover command is generated with reference to the UE configuration information.

The following describes in detail the technical solution of the pre-handover command generated in the incremental configuration mode provided by the embodiment of the present application with reference to FIGS. 5 to 10.

In the first embodiment, as shown in FIG. 5, in S501, the target network device first sends a first pre-handover command to the terminal device through the source network device; optionally, the first pre-handover command may be the target network The first pre-handover command sent by the device to the terminal device, that is, the first pre-handover command is sent to the terminal device together with the handover execution condition; optionally, the first pre-handover command can also be passed by the target network device An updated pre-handover command configured by the source network device; in S502, the target network device actively updates the pre-handover command based on the first UE configuration information, that is, generates a second pre-handover command, that is, the second pre-handover The command is generated by incremental configuration based on the first UE configuration information; in S503, since the first UE configuration information has not changed when the source network device receives the second pre-handover command, the source network The device may directly accept the second pre-handover command; in S504, the source network device may forward the second pre-handover command to the terminal device; optionally, in S505, the source network device may also reply to the target network device with confirmation information, Inform the target network device that it has accepted the second pre-handover command; optionally, in S504, the source network device may also send instruction information to the terminal device, instructing the terminal device to delete the old pre-handover command (first pre-handover command) , Replaced by a new pre-switch command (second pre-switch command). Optionally, in S504, if the source network device discovers that the first UE configuration information has been updated to the second UE configuration information when forwarding the second pre-handover command to the terminal device, then the source network device may also send the The device sends the updated UE configuration information (second UE configuration information). Optionally, the second pre-handover command and the second UE configuration information may be sent in one message. Specifically, it can be sent in an RRC message, such as an RRC reconfiguration message. When the terminal device receives the second pre-handover command and second UE configuration information carried in a message, the source network device should also send indication information to the terminal device, indicating that the second pre-handover command is based on the first UE configuration information If it is generated in an incremental configuration mode, then the terminal device may first obtain the second pre-handover command or the second UE configuration information. Optionally, the source network device may delete the first pre-handover command while accepting the second pre-handover command.

In the second embodiment, as shown in FIG. 6, in S601, the target network device first sends the first pre-handover command to the terminal device through the source network device; optionally, the first pre-handover command may be the target network The first pre-handover command sent by the device to the terminal device, that is, the first pre-handover command is sent to the terminal device together with the handover execution condition; optionally, the first pre-handover command can also be passed by the target network device An updated pre-handover command configured by the source network device; in S602, the target network device actively updates the pre-handover command based on the first UE configuration information, that is, generates the third pre-handover command in the embodiment of this application, that is, , The second pre-handover command is generated based on the first UE configuration information in an incremental configuration; in S603, because when the source network device receives the third pre-handover command, the first UE configuration information is updated to If the second UE configuration information is obtained, the source network device may ignore the third pre-handover command; in S604, the source network device may send the updated UE configuration information (second UE configuration information) to the target network device; in S605 In S606, the target network device may generate a second pre-handover command in incremental configuration based on the second UE configuration information, and send the generated second pre-handover command to the source network device; in S606, the source network device may Forward the second pre-handover command to the terminal device. Optionally, since in S603, the first UE configuration information has been updated to the second UE configuration information, but the source network device did not send the second UE configuration information to the terminal device in time, in S606, the source network device still The new UE configuration information (second UE configuration information) can be sent to the terminal device. Optionally, the second pre-handover command and the second UE configuration information may be sent in one message. Specifically, it can be sent in an RRC message, such as an RRC reconfiguration message. When the terminal device receives the second pre-handover command and the second UE configuration information carried in a message, the terminal device can first obtain the second UE configuration information, and then use the second UE configuration information as a reference to configure incrementally The second pre-switch command is acquired in the manner of. Optionally, the source network device may also send indication information to the terminal device to instruct the terminal device to delete the old pre-handover command (first pre-handover command) and/or old UE configuration information (first UE configuration information), and the new The pre-handover command (second pre-handover command) and/or new UE configuration information (second UE configuration information) is replaced. Optionally, the source network device may also delete the first pre-handover command while accepting the second pre-handover command.

In the third embodiment, as shown in FIG. 7, in S701, the target network device first sends the first pre-handover command to the terminal device through the source network device; alternatively, the first pre-handover command may be the target network The first pre-handover command sent by the device to the terminal device, that is, the first pre-handover command is sent to the terminal device together with the handover execution condition; optionally, the first pre-handover command can also be passed by the target network device An updated pre-handover command configured by the source network device; in S702, the target network device actively updates the pre-handover command based on the first UE configuration information, that is, generates the third pre-handover command in the embodiment of this application, that is, , The second pre-handover command is generated in an incremental configuration based on the first UE configuration information; in S703, because the source network device receives the third pre-handover command, the first UE configuration information is updated to The second UE configuration information, the source network device can ignore the third pre-handover command; in S704, after the first UE configuration information is updated to the second UE configuration information, the source network device can download the terminal device in time Send the second UE configuration information; in S705, the source network device may send the updated UE configuration information (second UE configuration information) to the target network device; in S706, the target network device may be based on the second UE configuration information , Generate the second pre-handover command in an incremental configuration, and send the generated second pre-handover command to the source network device; in S707, the source network device may forward the second pre-handover command to the terminal device. Optionally, in S707, if the source network device discovers that the second UE configuration information has been updated to the third UE configuration information when forwarding the second pre-handover command to the terminal device, then the source network device may also report to the terminal device. The device sends the updated UE configuration information (third UE configuration information). Optionally, the second pre-handover command and the third UE configuration information may be sent in one message. Specifically, it can be sent in an RRC message, such as an RRC reconfiguration message. When the terminal device receives the second pre-handover command and the third UE configuration information carried in a message, the source network device should also send indication information to the terminal device, indicating that the second pre-handover command is based on the second UE configuration information If it is generated in an incremental configuration mode, then the terminal device may first obtain the second pre-handover command or the third UE configuration information. Optionally, the source network device may also send indication information to the terminal device to instruct the terminal device to delete the old pre-handover command (first pre-handover command) and/or old UE configuration information (first UE configuration information), and the new The pre-handover command (second pre-handover command) and/or new UE configuration information (second UE configuration information) is replaced. Optionally, the source network device may also delete the first pre-handover command while accepting the second pre-handover command.

In the fourth embodiment, as shown in FIG. 8, in S801, the target network device first sends a first pre-handover command to the terminal device through the source network device; alternatively, the first pre-handover command may be the target network The first pre-handover command sent by the device to the terminal device, that is, the first pre-handover command is sent to the terminal device together with the handover execution condition; optionally, the first pre-handover command can also be passed by the target network device An updated pre-handover command configured by the source network device; in S802, when the first UE configuration information is changed and updated to the second UE configuration information, the source network device can actively send the second UE configuration information To the target network device; in S803, the target network device determines whether to update the pre-handover command based on the second UE configuration information. In this embodiment, the target network device determines not to update the pre-handover command; and in S804, the target network device Send response information to the source network device, instructing the source network device to forward the pre-handover command (first pre-handover command) that is kept old to the terminal device; in S805, the source network device sends the second UE configuration information to the terminal device. Optionally, in S805, the source network device may simultaneously instruct the terminal device to maintain the first pre-handover command. Optionally, after the terminal device receives the instruction information sent by the source network device instructing to maintain the first pre-switching command, when it needs to switch to the target network device, the terminal device may continue to use the previously retained complete configuration information for switching. Optionally, in this embodiment of the application, the source network device may send the second UE configuration information to the terminal device in time when it finds that the first UE configuration information is updated to the second UE configuration information, or it may receive After the target network device sends the response information indicating to keep the old pre-handover command, the second UE configuration information is sent to the terminal device.

In the fifth embodiment, as shown in FIG. 9, in S901, the target network device first sends the first pre-handover command to the terminal device through the source network device; alternatively, the first pre-handover command may be the target network The first pre-handover command sent by the device to the terminal device, that is, the first pre-handover command is sent to the terminal device together with the handover execution condition; optionally, the first pre-handover command can also be passed by the target network device An updated pre-handover command configured by the source network device; in S902, when the first UE configuration information is changed and updated to the second UE configuration information, the source network device can actively send the second UE configuration information To the target network device; in S903, the target network device determines whether to update the pre-handover command based on the second UE configuration information. In this embodiment, the target network device determines to update the pre-handover command, and uses the second UE configuration information as For reference, the second pre-handover command is generated in an incremental configuration; and in S904, the target network device sends a new pre-handover command (second pre-handover command) to the source network device; in S905, the source network device sends the terminal The device sends the second pre-handover command. Optionally, since in S902, the first UE configuration information has been updated to the second UE configuration information, but the source network device did not send the second UE configuration information to the terminal device in time, in S905, the source network device still The new UE configuration information (second UE configuration information) may be sent to the terminal device. Optionally, the second pre-handover command and the second UE configuration information may be sent in one message. Specifically, it can be sent in an RRC message, such as an RRC reconfiguration message. When the terminal device receives the second pre-handover command and the second UE configuration information carried in a message, the terminal device can first obtain the updated UE configuration information (second UE configuration information), and then use the updated UE configuration information as Refer to obtaining the updated pre-switch command (second pre-switch command) in incremental configuration. Optionally, the source network device may also send indication information to the terminal device to instruct the terminal device to delete the old pre-handover command (first pre-handover command) and/or old UE configuration information (first UE configuration information), and the new The pre-handover command (second pre-handover command) and/or new UE configuration information (second UE configuration information) is replaced. The second pre-handover command uses the second UE configuration information as a reference to perform incremental configuration. Optionally, in S904, the source network device may delete the first pre-handover command while receiving the second pre-handover command. Optionally, in the embodiment of the present application, after the terminal device receives the updated complete configuration information for handover (including the pre-handover command and UE configuration information), when the terminal device satisfies the execution conditions for handover to the target network device , The terminal device can use the old complete configuration information saved before or the updated complete configuration information.

In the sixth embodiment, as shown in FIG. 10, in S1001, the target network device first sends the first pre-handover command to the terminal device through the source network device; optionally, the first pre-handover command may be the target network The first pre-handover command sent by the device to the terminal device, that is, the first pre-handover command is sent to the terminal device together with the handover execution condition; optionally, the first pre-handover command can also be passed by the target network device An updated pre-handover command configured by the source network device; in S1002, when the first UE configuration information is changed and updated to the second UE configuration information, the source network device can actively send the second UE configuration information To the target network device; in S1003, when the first UE configuration information is updated to the second UE configuration information, the source network device can send the second UE configuration information to the terminal device in time; in S1004, the target network device determines whether to The pre-handover command is updated based on the second UE configuration information. In this embodiment, the target network device determines to update the pre-handover command, and uses the second UE configuration information as a reference to generate the second pre-handover command in incremental configuration; And in S1005, the target network device sends a new pre-switch command (second pre-switch command) to the source network device; in S1006, the source network device sends a second pre-switch command to the terminal device. Optionally, in S1006, if the source network device discovers that the second UE configuration information has been updated to the third UE configuration information when forwarding the second pre-handover command to the terminal device, then the source network device may also report to the terminal device. The device sends the updated UE configuration information (third UE configuration information). Optionally, the second pre-handover command and the third UE configuration information may be sent in one message. Specifically, it can be sent in an RRC message, such as an RRC reconfiguration message. When the terminal device receives the second pre-handover command and the third UE configuration information carried in a message, the source network device should also send indication information to the terminal device, indicating that the second pre-handover command is based on the second UE configuration information If it is generated in an incremental configuration mode, then the terminal device may first obtain the second pre-handover command or the third UE configuration information. Optionally, the source network device may also send indication information to the terminal device to instruct the terminal device to delete the old pre-handover command (first pre-handover command) and/or old UE configuration information (first UE configuration information), and the new The pre-handover command (second pre-handover command) and/or new UE configuration information (second UE configuration information) is replaced. The second pre-handover command uses the second UE configuration information as a reference to perform incremental configuration. Optionally, in S1005, the source network device may delete the first pre-handover command while receiving the second pre-handover command. Optionally, in the embodiment of the present application, after the terminal device receives the updated complete configuration information for handover (including the pre-handover command and UE configuration information), when the terminal device satisfies the execution conditions for handover to the target network device , The terminal device can use the old complete configuration information saved before, or the updated complete configuration information.

Optionally, in this embodiment of the application, when the source network device not only needs to send the updated pre-handover command to the terminal device, but also sends the updated UE configuration information to the terminal device, the two can be sent simultaneously through a message , It can also be sent separately through multiple messages, which is not limited in the embodiment of this application.

It should be understood that, in the embodiment of the present application, when the source network device sends the pre-handover command generated by the target network device for the first time to the terminal device, the generated handover execution condition may be configured to the terminal device at the same time. Specifically, the handover execution condition may be a measurement threshold of channel quality. For example, when the measured value of the channel quality of the target network device is greater than the threshold, the condition for switching to the target network device is satisfied. The embodiment of the application does not limit the handover execution conditions.

It should be understood that, in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application. The implementation process constitutes any limitation.

The wireless communication method according to the embodiment of the present application is described in detail above. The wireless communication device according to the embodiment of the present application will be described below in conjunction with FIG. 11 to FIG. 13. The technical features described in the method embodiment are applicable to the following device implementation example.

FIG. 11 shows a schematic block diagram of a network device 2000 according to an embodiment of the present application. As shown in FIG. 11, the network device 2000 is a source network device, and the network device 2000 includes:

The transceiving unit 2010 is configured to send a first pre-handover command generated by a target network device to a terminal device, where the first pre-handover command is used by the terminal device to obtain first configuration information for switching to the target network device;

The transceiver unit 2010 is also used for:

Sending second configuration information to the terminal device, where the second configuration information is the updated first configuration information.

Optionally, in the embodiment of the present application, the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the second configuration information includes The second pre-handover command generated by the target network device and/or the second UE configuration information generated by the source network device, the second pre-handover command is the updated first pre-handover command, and the first The second UE configuration information is the updated first UE configuration information.

Optionally, in this embodiment of the present application, the second configuration information includes the second pre-handover command, and the transceiver unit is further configured to:

Receiving the second pre-handover command sent by the target network device;

Wherein, when the transceiver unit receives the second pre-handover command, if the first UE configuration information has not changed, the second pre-handover command is configured in increments based on the first UE configuration information Way to generate.

Receiving a third pre-handover command sent by the target network device, where the third pre-handover command is generated in an incremental configuration based on the first UE configuration information;

When the transceiver unit receives the third pre-handover command, if the first UE configuration information is updated to the second UE configuration information, sending the second UE configuration information to the target network device;

Receiving a second pre-handover command sent by the target network device, where the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.

Optionally, in the embodiment of the present application, the transceiver unit is further configured to:

Sending confirmation information to the target network device, where the confirmation information is used to indicate that the source access network device accepts the second pre-handover command.

Optionally, in this embodiment of the application, when the transceiver unit sends the second configuration information to the terminal device, if the first UE configuration information is updated to the second UE configuration information, the The second configuration information further includes the second UE configuration information, and the transceiving unit further includes:

Sending first indication information to the terminal device, where the first indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the first UE configuration information.

Optionally, in the embodiment of the present application, the second configuration information further includes the second UE configuration information.

Optionally, in the embodiment of the present application, the second configuration information further includes third UE configuration information, the third UE configuration information is the updated second UE configuration information, and the transceiver unit also uses in:

Before the transceiver unit sends the second configuration information to the terminal device, sending the second UE configuration information to the terminal device;

Sending second indication information to the terminal device, where the second indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.

Optionally, in the embodiment of the present application, the second configuration information includes the second UE configuration information, and the transceiving unit is further configured to:

Sending the second UE configuration information to the target network device;

When the target network device generates the second pre-handover command based on the second UE configuration information, receiving the second pre-handover command.

Optionally, in this embodiment of the present application, the second configuration information further includes the second pre-handover command.

Sending the second UE configuration information to the target network device;

In the case that the target network device does not generate the second pre-handover command based on the second UE configuration information, receiving response information sent by the target network device, where the response information is used to indicate the first pre-handover command The switching command remains unchanged.

Send third indication information to the terminal device, where the third indication information is used to indicate that the first pre-handover command remains unchanged.

Sending third instruction information to the terminal device, where the third instruction information is used to instruct to delete the first pre-handover command.

Optionally, in the embodiment of the present application, the second configuration information is carried in a radio resource control RRC message.

Optionally, in the embodiment of the present application, the RRC message is an RRC reconfiguration message.

Optionally, in the embodiment of the present application, the first pre-handover command and the handover execution condition are carried in the same message, and the handover execution condition is used by the terminal device to determine whether to switch to the target network device.

It should be understood that the network device 2000 according to the embodiment of the present application may correspond to the source access network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 2000 are respectively for implementing FIG. 3 , The corresponding process of the source network device in each method of FIG. 5 to FIG. 10, for the sake of brevity, it is not repeated here.

FIG. 12 shows a schematic block diagram of a network device 3000 according to an embodiment of the present application. As shown in FIG. 12, the network device 3000 is a target network device, and the network device 3000 includes:

The transceiver unit 3010 is configured to send a first pre-switch command to the source network device, where the first pre-switch command is used by the terminal device to obtain first configuration information for switching to the target network device; and

A second pre-handover command is sent to the source network device, where the second pre-handover command is used by the terminal device to obtain second configuration information for handover to the target network device, and the second pre-handover command is In the updated first pre-handover command, the second configuration information is the updated first configuration information.

Optionally, in the embodiment of the present application, the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the network device further includes:

The processing unit is configured to generate the second pre-handover command in an incremental configuration based on the first UE configuration information.

Receiving confirmation information sent by the source network device, where the confirmation information is used to indicate that the source network device accepts the second pre-handover command.

Receiving second UE configuration information sent by the source network device;

The network equipment also includes:

The processing unit is configured to generate the second pre-handover command in an incremental configuration based on the second UE configuration information, where the second UE configuration information is the updated first UE configuration information.

Optionally, in the embodiment of the present application, before the transceiver unit receives the second UE configuration information, the processing unit is further configured to:

Generating a third pre-handover command in an incremental configuration based on the first UE configuration information;

The transceiver unit is also used for:

Sending the third pre-handover command to the source network device;

The transceiver unit is specifically configured to:

In a case where the source network device ignores the third pre-handover command, receiving the second UE configuration information sent by the source network device.

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

In the case that the target network device receives the second UE configuration information, determining whether to update the first pre-handover command;

The processing unit is specifically used for:

In the case where the target network device determines to update the first pre-handover command, the target network device generates the second pre-handover command in an incremental configuration based on the second UE configuration information.

It should be understood that the network device 3000 according to the embodiment of the present application may correspond to the target access network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 3000 are respectively intended to implement FIG. 3 The corresponding process of the target network device in each method of FIG. 5 to FIG. 10 is not repeated here for brevity.

FIG. 13 shows a schematic block diagram of a terminal device 4000 according to an embodiment of the present application. As shown in Fig. 13, the terminal device 4000 includes:

The processing unit 4010 is configured to obtain first configuration information for switching to the target network device according to the first pre-handover command generated by the target network device;

The transceiver unit 4020 is configured to receive second configuration information sent by a source network device, where the second configuration information is the updated first configuration information.

Optionally, in the embodiment of the present application, the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the second configuration information includes the The second pre-handover command of the target network device and/or the second UE configuration information generated by the source network device, the second pre-handover command is the updated first pre-handover command, and the second UE configuration The information is the updated first UE configuration information.

Optionally, in this embodiment of the present application, the second configuration information includes the second pre-handover command, and the second pre-handover command is generated in an incremental configuration based on the first UE configuration information .

Optionally, in the embodiment of the present application, the second configuration information further includes the second UE configuration information, and the transceiving unit further includes:

Receiving first indication information sent by the source network device, where the first indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the first UE configuration information.

Optionally, in the embodiment of the present application, the second configuration information includes the second pre-handover command, and the second pre-handover command is generated in an incremental configuration based on the second UE configuration information .

Acquiring the second UE configuration information;

Based on the second UE configuration information, the second pre-handover command is acquired in an incremental configuration manner.

Optionally, in the embodiment of the present application, the second configuration information includes third UE configuration information, the third UE configuration information is the updated second UE configuration information, and the transceiver unit is further configured to :

Before the transceiver unit receives the second configuration information sent by the source network device, receive the second UE configuration information sent by the source network device;

Receiving second indication information sent by the source network device, where the second indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.

Receiving third instruction information sent by the source network device, where the third instruction information is used to instruct to delete the first pre-handover command.

Optionally, in the embodiment of the present application, the first pre-handover command and the handover execution condition are carried in the same message, and the processing unit is further configured to:

In a case where the terminal device meets the handover execution condition, switch to the target network device according to the second configuration information.

It should be understood that the terminal device 4000 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 4000 are used to implement FIGS. 3 and 5, respectively. The corresponding procedures of the terminal equipment in the methods to FIG. 10 are not repeated here for brevity.

FIG. 14 is a schematic structural diagram of a communication device 5000 according to an embodiment of the present application. The communication device 5000 shown in FIG. 14 includes a processor 5010, and the processor 5010 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 14, the communication device 5000 may further include a memory 5020. The processor 5010 may call and run a computer program from the memory 5020 to implement the method in the embodiment of the present application.

The memory 5020 may be a separate device independent of the processor 5010, or may be integrated in the processor 5010.

Optionally, as shown in FIG. 14, the communication device 5000 may further include a transceiver 5030, and the processor 5010 may control the transceiver 5030 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Among them, the transceiver 5030 may include a transmitter and a receiver. The transceiver 5030 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 5000 may specifically be a network device in an embodiment of the application, and the communication device 5000 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For brevity, details are not repeated here. .

Optionally, the communication device 5000 may specifically be a terminal device of an embodiment of the present application, and the communication device 3000 may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For brevity, details are not repeated here. .

FIG. 15 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 6000 shown in FIG. 15 includes a processor 6010, and the processor 6010 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 15, the chip 6000 may further include a memory 6020. The processor 6010 can call and run a computer program from the memory 6020 to implement the method in the embodiment of the present application.

The memory 6020 may be a separate device independent of the processor 6010, or may be integrated in the processor 6010.

Optionally, the chip 6000 may also include an input interface 6030. The processor 6010 can control the input interface 6030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 6000 may also include an output interface 6040. The processor 6010 can control the output interface 6040 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application. For brevity, details are not described herein again.

Optionally, the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the terminal device in the various methods of the embodiment of the present application. For brevity, details are not repeated here.

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

FIG. 16 is a schematic block diagram of a communication system 7000 according to an embodiment of the present application. As shown in FIG. 16, the communication system 7000 includes a terminal device 7010 and a network device 7020.

Wherein, the terminal device 7010 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 7020 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be omitted here. Repeat.

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

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

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , I won’t repeat it here.

The embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Repeat it again.

Optionally, the computer program product can be applied to the terminal device in the embodiment of this application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of this application. For the sake of brevity, I will not repeat them here.

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

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

Optionally, the computer program can be applied to the terminal device in the embodiment of the present application. When the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A wireless communication method, characterized in that it comprises:

The source network device sends a first pre-switch command generated by the target network device to the terminal device, where the first pre-switch command is used by the terminal device to obtain first configuration information for switching to the target network device;

The source network device sends second configuration information to the terminal device, where the second configuration information is the updated first configuration information.
The method according to claim 1, wherein the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the second configuration The information includes a second pre-handover command generated by the target network device and/or second UE configuration information generated by the source network device, and the second pre-handover command is the updated first pre-handover command, so The second UE configuration information is the updated first UE configuration information.
The method according to claim 2, wherein the second configuration information includes the second pre-handover command, and the method further comprises:

Receiving, by the source network device, the second pre-handover command sent by the target network device;

Wherein, when the source network device receives the second pre-handover command, if the first UE configuration information does not change, the second pre-handover command is based on the first UE configuration information in increments The configuration method is generated.
The method according to claim 2, wherein the second configuration information includes the second pre-handover command, and the method further comprises:

Receiving, by the source network device, a third pre-handover command sent by the target network device, where the third pre-handover command is generated in an incremental configuration based on the first UE configuration information;

When the source network device receives the third pre-handover command, if the first UE configuration information is updated to the second UE configuration information, the source network device sends the first UE configuration information to the target network device 2. UE configuration information;

The source network device receives the second pre-handover command sent by the target network device, where the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.
The method according to claim 3, wherein the method further comprises:

The source network device sends confirmation information to the target network device, where the confirmation information is used to indicate that the source network device accepts the second pre-handover command.
The method according to claim 5, wherein when the source network device sends the second configuration information to the terminal device, if the first UE configuration information is updated to the second UE configuration information , The second configuration information further includes the second UE configuration information, and the method further includes:

The source network device sends first indication information to the terminal device, where the first indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the first UE configuration information.
The method according to claim 4, wherein the second configuration information further includes the second UE configuration information.
The method according to claim 4, wherein the second configuration information further comprises third UE configuration information, the third UE configuration information is the updated second UE configuration information, and the method further include:

Before the source network device sends the second configuration information to the terminal device, the source network device sends the second UE configuration information to the terminal device;

The source network device sends second indication information to the terminal device, where the second indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.
The method according to claim 2, wherein the second configuration information includes the second UE configuration information, and the method further includes:

Sending, by the source network device, the second UE configuration information to the target network device;

In a case where the target network device generates the second pre-handover command based on the second UE configuration information, the source network device receives the second pre-handover command.
The method according to claim 9, wherein the second configuration information further includes the second pre-handover command.
The method according to claim 2, wherein the second configuration information includes the second UE configuration information, and the method further includes:

Sending, by the source network device, the second UE configuration information to the target network device;

In the case that the target network device does not generate the second pre-handover command based on the second UE configuration information, the source network device receives response information sent by the target network device, and the response information is used to indicate The first pre-handover command remains unchanged.
The method of claim 11, wherein the method further comprises:

The source network device sends third indication information to the terminal device, where the third indication information is used to indicate that the first pre-handover command remains unchanged.
The method according to any one of claims 3 to 8 and 10, wherein the method further comprises:

The source network device sends third instruction information to the terminal device, where the third instruction information is used to instruct to delete the first pre-handover command.
The method according to any one of claims 1 to 13, wherein the second configuration information is carried in a radio resource control RRC message.
The method according to claim 14, wherein the RRC message is an RRC reconfiguration message.
The method according to any one of claims 1 to 15, wherein the first pre-handover command and the handover execution condition are carried in the same message, and the handover execution condition is used by the terminal device to determine whether Switch to the target network device.
A wireless communication method, characterized in that it comprises:

The target network device sends a first pre-switch command to the source network device, where the first pre-switch command is used by the terminal device to obtain first configuration information for switching to the target network device;

The target network device sends a second pre-handover command to the source network device, where the second pre-handover command is used by the terminal device to obtain second configuration information for handover to the target network device, and the first The second pre-switch command is the updated first pre-switch command, and the second configuration information is the updated first configuration information.
The method according to claim 17, wherein the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the method further comprises :

The target network device generates the second pre-handover command in an incremental configuration based on the first UE configuration information.
The method of claim 18, wherein the method further comprises:

The target network device receives confirmation information sent by the source network device, where the confirmation information is used to indicate that the source network device accepts the second pre-handover command.
The method of claim 17, wherein the method further comprises:

Receiving, by the target network device, second UE configuration information sent by the source network device;

The target network device generates the second pre-handover command in an incremental configuration based on the second UE configuration information, and the second UE configuration information is the updated first UE configuration information.
The method according to claim 20, wherein before the target network device receives the second UE configuration information, the method further comprises:

Generating, by the target network device, a third pre-handover command in an incremental configuration based on the first UE configuration information;

Sending the third pre-handover command by the target network device to the source network device;

The receiving, by the target network device, the second UE configuration information sent by the source network device includes:

In a case where the source network device ignores the third pre-handover command, the target network device receives the second UE configuration information sent by the source network device.
The method of claim 20, wherein the method further comprises:

In the case that the target network device receives the second UE configuration information, the target network device determines whether to update the first pre-handover command;

The target network device generating the second pre-handover command in an incremental configuration based on the second UE configuration information includes:

In the case where the target network device determines to update the first pre-handover command, the target network device generates the second pre-handover command in an incremental configuration based on the second UE configuration information.
A wireless communication method, characterized in that it comprises:

The terminal device obtains the first configuration information used to switch to the target network device according to the first pre-handover command generated by the target network device;

The terminal device receives the second configuration information sent by the source network device, where the second configuration information is the updated first configuration information.
The method according to claim 23, wherein the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the second configuration The information includes a second pre-handover command generated by the target network device and/or second UE configuration information generated by the source network device, and the second pre-handover command is the updated first pre-handover command, so The second UE configuration information is the updated first UE configuration information.
The method according to claim 24, wherein the second configuration information comprises the second pre-handover command, and the second pre-handover command is configured in an incremental manner based on the first UE configuration information Generated.
The method according to claim 25, wherein the second configuration information further comprises the second UE configuration information, and the method further comprises:

The terminal device receives first indication information sent by the source network device, where the first indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the first UE configuration information .
The method according to claim 24, wherein the second configuration information comprises the second pre-handover command, and the second pre-handover command is configured in an incremental manner based on the second UE configuration information Generated.
The method according to claim 27, wherein the second configuration information further comprises the second UE configuration information.
The method of claim 28, wherein the method further comprises:

Acquiring the second UE configuration information by the terminal device;

The terminal device acquires the second pre-handover command in an incremental configuration based on the second UE configuration information.
The method according to claim 27, wherein the second configuration information comprises third UE configuration information, and the third UE configuration information is the updated second UE configuration information, and the method further comprises :

Before the terminal device receives the second configuration information sent by the source network device, the terminal device receives the second UE configuration information sent by the source network device;

The terminal device receives second indication information sent by the source network device, where the second indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the second UE configuration information .
The method according to any one of claims 23 to 30, wherein the second configuration information is carried in a radio resource control RRC message.
The method according to claim 31, wherein the RRC message is an RRC reconfiguration message.
The method according to any one of claims 25 to 30, wherein the method further comprises:

The terminal device receives third instruction information sent by the source network device, where the third instruction information is used to instruct to delete the first pre-handover command.
The method according to any one of claims 23 to 33, wherein the first pre-handover command and the handover execution condition are carried in the same message, and the method further comprises:

In the case that the terminal device meets the handover execution condition, the terminal device switches to the target network device according to the second configuration information.
A network device, characterized in that the network device is a source network device, and the network device includes:

A transceiving unit, configured to send a first pre-handover command generated by a target network device to a terminal device, where the first pre-handover command is used by the terminal device to obtain first configuration information for handover to the target network device; and

Sending second configuration information to the terminal device, where the second configuration information is the updated first configuration information.
The network device according to claim 35, wherein the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the second The configuration information includes a second pre-handover command generated by the target network device and/or second UE configuration information generated by the source network device, and the second pre-handover command is the updated first pre-handover command, The second UE configuration information is the updated first UE configuration information.
The network device according to claim 36, wherein the second configuration information includes the second pre-handover command, and the transceiver unit is further configured to:

Receiving the second pre-handover command sent by the target network device;

Wherein, when the transceiver unit receives the second pre-handover command, if the first UE configuration information has not changed, the second pre-handover command is configured in increments based on the first UE configuration information Way to generate.
The network device according to claim 36, wherein the second configuration information includes the second pre-handover command, and the transceiver unit is further configured to:

Receiving a third pre-handover command sent by the target network device, where the third pre-handover command is generated in an incremental configuration based on the first UE configuration information;

When the transceiver unit receives the third pre-handover command, if the first UE configuration information is updated to the second UE configuration information, sending the second UE configuration information to the target network device;

Receiving the second pre-handover command sent by the target network device, where the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.
The network device according to claim 37, wherein the transceiver unit is further configured to:

Sending confirmation information to the target network device, where the confirmation information is used to indicate that the source network device accepts the second pre-handover command.
The network device according to claim 39, wherein when the transceiver unit sends the second configuration information to the terminal device, if the first UE configuration information is updated to the second UE configuration information , The second configuration information further includes the second UE configuration information, and the transceiving unit further includes:

Sending first indication information to the terminal device, where the first indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the first UE configuration information.
The network device according to claim 38, wherein the second configuration information further comprises the second UE configuration information.
The network device according to claim 38, wherein the second configuration information further comprises third UE configuration information, and the third UE configuration information is the updated second UE configuration information, and the transceiver Units are also used to:

Before the transceiver unit sends the second configuration information to the terminal device, sending the second UE configuration information to the terminal device;

Sending second indication information to the terminal device, where the second indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.
The network device according to claim 36, wherein the second configuration information includes the second UE configuration information, and the transceiver unit is further configured to:

Sending the second UE configuration information to the target network device;

When the target network device generates the second pre-handover command based on the second UE configuration information, receiving the second pre-handover command.
The network device according to claim 43, wherein the second configuration information further comprises the second pre-handover command.
The network device according to claim 36, wherein the second configuration information includes the second UE configuration information, and the transceiver unit is further configured to:

Sending the second UE configuration information to the target network device;

In the case that the target network device does not generate the second pre-handover command based on the second UE configuration information, receiving response information sent by the target network device, where the response information is used to indicate the first pre-handover command The switching command remains unchanged.
The network device according to claim 45, wherein the transceiver unit is further configured to:

Send third indication information to the terminal device, where the third indication information is used to indicate that the first pre-handover command remains unchanged.
The network device according to any one of claims 37 to 42 and 44, wherein the transceiver unit is further configured to:

Sending third instruction information to the terminal device, where the third instruction information is used to instruct to delete the first pre-handover command.
The network device according to any one of claims 35 to 47, wherein the second configuration information is carried in a radio resource control, RRC message.
The network device according to claim 48, wherein the RRC message is an RRC reconfiguration message.
The network device according to any one of claims 35 to 49, wherein the first pre-handover command and the handover execution condition are carried in the same message, and the handover execution condition is used by the terminal device to determine Whether to switch to the target network device.
A network device, characterized in that, the network device is a target network device, and the network device includes:

A transceiving unit, configured to send a first pre-handover command to a source network device, where the first pre-handover command is used by the terminal device to obtain first configuration information for handover to the target network device;

A second pre-handover command is sent to the source network device, where the second pre-handover command is used by the terminal device to obtain second configuration information for handover to the target network device, and the second pre-handover command is In the updated first pre-handover command, the second configuration information is the updated first configuration information.
The network device of claim 51, wherein the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the network device Also includes:

The processing unit is configured to generate the second pre-handover command in an incremental configuration based on the first UE configuration information.
The network device according to claim 52, wherein the transceiver unit is further configured to:

Receiving confirmation information sent by the source network device, where the confirmation information is used to indicate that the source network device accepts the second pre-handover command.
The network device according to claim 51, wherein the transceiver unit is further configured to:

Receiving second UE configuration information sent by the source network device;

The network equipment also includes:

The processing unit is configured to generate the second pre-handover command in an incremental configuration based on the second UE configuration information, where the second UE configuration information is the updated first UE configuration information.
The network device according to claim 54, wherein before the transceiver unit receives the second UE configuration information, the processing unit is further configured to:

Generating a third pre-handover command in an incremental configuration based on the first UE configuration information;

The transceiver unit is also used for:

Sending the third pre-handover command to the source network device;

The transceiver unit is specifically configured to:

In a case where the source network device ignores the third pre-handover command, receiving the second UE configuration information sent by the source network device.
The network device according to claim 54, wherein the processing unit is further configured to:

In the case that the target network device receives the second UE configuration information, determining whether to update the first pre-handover command;

The processing unit is specifically used for:

In the case where the target network device determines to update the first pre-handover command, the target network device generates the second pre-handover command in an incremental configuration based on the second UE configuration information.
A terminal device, characterized in that the terminal device includes:

A processing unit, configured to obtain first configuration information for switching to the target network device according to the first pre-handover command generated by the target network device;

The transceiver unit is configured to receive second configuration information sent by a source network device, where the second configuration information is the updated first configuration information.
The terminal device according to claim 57, wherein the first pre-handover command is generated in an incremental configuration based on the first user equipment UE configuration information generated by the source network device, and the second The configuration information includes a second pre-handover command generated by the target network device and/or second UE configuration information generated by the source network device, and the second pre-handover command is the updated first pre-handover command, The second UE configuration information is the updated first UE configuration information.
The terminal device according to claim 58, wherein the second configuration information comprises the second pre-handover command, and the second pre-handover command is configured in increments based on the first UE configuration information Way generated.
The terminal device according to claim 59, wherein the second configuration information further comprises the second UE configuration information, and the transceiving unit further comprises:

Receiving first indication information sent by the source network device, where the first indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the first UE configuration information.
The terminal device according to claim 60, wherein the second configuration information comprises the second pre-handover command, and the second pre-handover command is configured in increments based on the second UE configuration information Way generated.
The terminal device according to claim 61, wherein the second configuration information further includes the second UE configuration information.
The terminal device according to claim 62, wherein the processing unit is further configured to:

Acquiring the second UE configuration information;

Based on the second UE configuration information, the second pre-handover command is acquired in an incremental configuration manner.
The terminal device according to claim 61, wherein the second configuration information includes third UE configuration information, and the third UE configuration information is the updated second UE configuration information, and the transceiver unit Also used for:

Before the transceiver unit receives the second configuration information sent by the source network device, receive the second UE configuration information sent by the source network device;

Receiving second indication information sent by the source network device, where the second indication information is used to indicate that the second pre-handover command is generated in an incremental configuration based on the second UE configuration information.
The terminal device according to any one of claims 57 to 64, wherein the second configuration information is carried in a radio resource control RRC message.
The terminal device according to claim 65, wherein the RRC message is an RRC reconfiguration message.
The terminal device according to any one of claims 59 to 64, wherein the transceiver unit is further configured to:

Receiving third instruction information sent by the source network device, where the third instruction information is used to instruct to delete the first pre-handover command.
The terminal device according to any one of claims 57 to 67, wherein the first pre-handover command and the handover execution condition are carried in the same message, and the processing unit is further configured to:

In a case where the terminal device meets the handover execution condition, switch to the target network device according to the second configuration information.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 22 The method described in one item.
A terminal device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of claims 23 to 34 The method described in one item.
A chip, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 22.
A chip, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 23 to 34.
A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method according to any one of claims 1-22.
A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method according to any one of claims 23 to 34.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 22.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 23 to 34.
A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1-22.
A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 23 to 34.