WO2020163999A1

WO2020163999A1 - Wireless communication method and device

Info

Publication number: WO2020163999A1
Application number: PCT/CN2019/074885
Authority: WO
Inventors: 许阳; 卢前溪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-02-12
Filing date: 2019-02-12
Publication date: 2020-08-20
Also published as: CN111903154A; CN111903154B

Abstract

Provided are a wireless communication method and a device, the method comprising: a first access network node sending first instruction information to a first core network node and/or sending second instruction information to a terminal device; wherein, the first instruction information being used for triggering at least one second core network node to use at least one access network node for sending a copied data packet to at least one terminal device, or for receiving a copied data packet from at least one terminal device via at least one access network node; and the second instruction information being used for triggering a terminal device to use at least one access network node for sending a copied data packet to at least one second core network node, or for receiving a copied data packet from at least one second core network node via at least one access network node.

Description

Method and equipment for wireless communication

Technical field

The embodiments of the present application relate to the field of communication, and more specifically, to methods and devices for wireless communication.

Background technique

In the New Radio (NR) system, the time that data transmission is affected is the data jitter time, which can include the data transmission interruption time, for example, when a user who is using network services moves from one cell to another In the cell, the communication link between the user and the source cell is disconnected, and the communication connection between the user and the new cell is established, that is, the handover process is performed. During this process, data transmission may be interrupted, which affects the normal transmission of data, especially ultra-reliable Low-latency communications (Ultra-Reliable Low Latency Communications, URLLC), therefore, how to perform uplink and downlink data transmission to reduce data jitter time is a problem worthy of study.

Summary of the invention

A wireless communication method and device are provided, which can perform redundant data transmission to reduce data jitter time.

In a first aspect, a wireless communication method is provided, including: a first access network node sends first indication information to a first core network node, and/or sends second indication information to a terminal device; wherein, the first An indication information is used to trigger at least one second core network node to send a copied data packet to at least one terminal device through at least one access network node or to receive a copy from at least one terminal device sent through the at least one access network node Or, the first indication information is used to trigger at least one second core network node to send a replicated data packet to at least one access network node or to receive a replicated data packet sent by the at least one access network node The second indication information is used to trigger the terminal device to send a copied data packet to at least one second core network node through at least one access network node or to receive at least one access from at least one second core network node A replicated data packet sent by a network node; or, the second indication information is used to trigger the terminal device to send a replicated data packet to at least one access network node or receive a replicated data packet sent by at least one access network node .

In a second aspect, a wireless communication method is provided, including: a first core network node receives first indication information sent by a first access network node, where the first indication information is used to indicate the first core network node Trigger at least one second core network node to send a replicated data packet to at least one access network node or receive a replicated data packet sent by the at least one access network node, or the first indication information is used to indicate the The first core network node triggers at least one second core network node to send a copied data packet to at least one terminal device through at least one access network node or to receive a copy from at least one terminal device sent through the at least one access network node The first core network node sends a first message to the at least one second core network node, and the first message is used to trigger the at least one second core network node to access the at least one The network node sends a replicated data packet or receives a replicated data packet sent by the at least one access network node, or the first message is used to trigger the at least one second core network node to send data packets to the at least one access network node At least one terminal device sends a replicated data packet or receives a replicated data packet from at least one terminal device sent through the at least one access network node.

In a third aspect, a wireless communication method is provided, including: a terminal device receives second indication information sent by a first access network node, the second indication information is used to trigger the terminal device to pass through at least one access network The node sends a replicated data packet to at least one second core network node or receives a replicated data packet from at least one second core network node through the at least one access network node; or, the second indication information is used To trigger the terminal device to send a replicated data packet to at least one access network node or receive a replicated data packet sent by at least one access network node.

In a fourth aspect, a wireless communication method is provided, including: a first access network node sends a replicated data packet to at least one second access network node.

In a fifth aspect, a wireless communication method is provided, including: a first access network node sends a second message to a first core network node, and/or sends a third message to a terminal device, wherein the second message For instructing the first core network node to stop at least one second core network node from sending the copied data packet to at least one access network node and/or receiving the copied data packet sent by the at least one access network node, so The third message is used to stop the terminal device from sending the replicated data packet to the at least one access network node and/or receiving the replicated data packet sent by the at least one access network node.

In the sixth aspect, a wireless communication device is provided, which is used to implement the method in the first aspect and any one of the possible implementations of the first aspect, or to implement any one of the second and the second aspects The method in the implementation manner, or the method in any one possible implementation manner of the third aspect and the third aspect, or the method in any one possible implementation manner of the fourth aspect and the fourth aspect, Or used to implement the fifth aspect and the method in any possible implementation manner of the fifth aspect.

Specifically, the device may include a module for executing the method in the first aspect and any one of the possible implementation manners of the first aspect, or for executing the second aspect and any one of the possible implementation manners of the second aspect The module of the method, or the module used to implement the method in any one of the third aspect and the third aspect, or the method in any one of the fourth aspect and the fourth aspect , Or a module for executing the method in the fifth aspect and any one of the possible implementation manners of the fifth aspect.

In a seventh aspect, a wireless communication 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 any one of the first aspect and the first aspect, or execute the second The method in any one of the possible implementations of the aspect and the second aspect, or the method in any one of the possible implementations of the third aspect and the third aspect, or the implementation of any of the fourth aspect and the fourth aspect The method in the implementation manner, or the method in the fifth aspect and any one of the possible implementation manners of the fifth aspect.

In an eighth aspect, a chip is provided for implementing the method in any one of the foregoing first to fifth aspects or any one of the first to fifth aspects. 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 can execute any one of the first to fifth aspects or the first to fifth aspects. The method in the implementation.

In a ninth 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 fifth aspects or any one of the first to fifth aspects. Methods.

In a tenth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute the method in any one of the foregoing first to fifth aspects or any one of the first to fifth aspects. .

In an eleventh aspect, a computer program is provided, which when running on a computer, causes the computer to execute the method in any one of the foregoing first to fifth aspects or any one of the first to fifth aspects.

Based on the above technical solution, the first access network node can trigger at least one second core network node to perform redundant transmission through the first indication information, and/or trigger the terminal device to perform redundant transmission through the second indication information, which is beneficial to reduce Data jitter time in scenarios where data interruption may occur such as cell handover.

Description of the drawings

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

Figure 2 is a schematic flow chart of a cell handover process.

Figure 3 is a signaling interaction diagram of a cell handover process.

Figure 4 is another signaling interaction diagram in the preparation phase for cell handover.

Fig. 5 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

Fig. 6 is a schematic flowchart of a wireless communication method according to another embodiment of the present application.

Fig. 7 is a schematic flowchart of a wireless communication method according to still another embodiment of the present application.

Fig. 8 is a signaling interaction diagram of a wireless communication method according to an embodiment of the present application.

Fig. 9 is a signaling interaction diagram of a wireless communication method according to another embodiment of the present application.

Fig. 10 is a schematic diagram of a redundant transmission method according to an embodiment of the present application.

Fig. 11 is a schematic diagram of another redundant transmission method according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of a wireless communication device according to an embodiment of the present application.

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

FIG. 14 is a schematic block diagram of a wireless communication device according to another embodiment of the present application.

FIG. 15 is a schematic block diagram of a wireless communication device according to still another embodiment of the present application.

FIG. 16 is a schematic block diagram of a wireless communication device according to still another embodiment of the present application.

FIG. 17 is a schematic block diagram of a communication device according to an embodiment of the present application.

FIG. 18 is a schematic flowchart of a chip of an embodiment of the present application.

FIG. 19 is a schematic block diagram of a communication system according to an embodiment of the present application.

detailed description

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.

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (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 (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, 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 an access network device 110, and the access network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or a terminal). The access network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area. Optionally, the access 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 evolution in the LTE system Type base station (Evolutional Node B, eNB or eNodeB), or a 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, or a vehicle Devices, wearable devices, hubs, switches, bridges, routers, network side devices in 5G networks, or network devices in the future evolution of public land mobile networks (Public Land Mobile Network, PLMN), etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of an access network (Radio Access Network, RAN) device 110. The "terminal equipment" used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device. Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, 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 5G networks, or terminal devices in the future evolution of PLMN, etc.

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.

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.

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.

The communication system 100 may also include core network equipment, such as control plane nodes such as Access Management Function (AMF), Session Management Function (SMF), and Data Network (DN). , User Plane Function (User Plane Function, UPF) and other user plane nodes. Among them, the UE is connected to the access network equipment through the Radio Resource Control (RRC) protocol; the access network equipment is connected to the AMF through the N2 interface, and the access network equipment is connected to the UPF through the N3 interface; UPF is connected to the DN through the N6 interface At the same time, UPF is connected to SMF through N4 interface, SMF is connected to AMF through N11 interface, and SMF controls UPF through N4 interface.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article.

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 an access network device 110 and a terminal device 120 with communication functions. The access network device 110 and the terminal device 120 may be the specific devices described above. The details are not repeated here; the communication device may also include other devices in the communication system 100, such as other core 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 method in the embodiment of the present application can be used to transmit various types of services.

For example, enhanced Mobile Broad Band (eMBB), eMBB targets users to obtain multimedia content, services and data, and its demand is growing rapidly. Another example is Ultra-Reliable Low Latency Communications (URLLC). Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), and traffic safety assurance. For another example, Massive Machine Type Communication (mMTC), typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of the module.

In this communication system, when users who are using network services move from one cell to another, or due to wireless transmission traffic load adjustment, activation operation and maintenance, equipment failure, etc., in order to ensure the continuity of communication and the quality of service , The system will transfer the communication link between the user and the original cell to the new cell, that is, perform the handover process.

Figure 2 is a schematic flow chart of the handover process based on the Xn interface. As shown in Figure 2, the entire handover process can be divided into the following three stages:

(1) Handover preparation stage: including measurement control and reporting, handover request and confirmation.

(2) Handover execution phase: The UE immediately executes the handover process after receiving the handover command, that is, the UE disconnects the source cell and connects to the target cell (such as performing random access, sending an RRC handover complete message to the target base station, etc.); SN state transfer , Data forwarding.

(3) Handover completion stage: The target cell performs Path Switch with AMF and UPF to release the UE context of the source base station.

In the handover completion phase (S11-S18), it can include:

In 11, the target base station sends a path switch request to the AMF.

In 12, after the AMF receives the path switching request of the target base station, it sends a protocol data unit (Protocol Data Unit, PDU) session update session management (Session Management, SM) context request (Nsmf_PDUSession_UpdateSMContext Request) to the SMF entity to update the target PDU session on the base station side.

Further, in 13, the SMF entity sends a session modification request (N4 Session Modification Request) to the UPF entity.

In 14, the UPF entity sends a session modification response (N4SessionModificationResponse) to the SMF entity.

In 15, the UPF entity sends the N3 end mark to the source base station, and the source base station sends the N3 end mark to the target base station, which is used to clear the path mark between the UPF entity and the source base station.

Perform path switching with the User Plane Function (UPF) to clear the path mark on the user plane of the source base station.

In 16, the SMF entity sends a PDU session update SM context response (Nsmf_PDUSession_UpdateSMContext Response) to the AMF entity.

In 17, after the path switching is completed, the AMF may send a path switching confirmation message to the target base station.

In 18, the target base station sends a terminal device context release message to the source base station to notify the source base station that the handover is successful, and trigger the source base station to release the terminal device context. At this point, the switch is complete.

Further, the registration process of the terminal device at the target base station can be performed in S19.

Figure 3 shows the specific signaling interaction flow of the above handover process. As shown in Figure 3, the handover preparation phase (201-205) may include:

In 201, the source base station triggers the terminal device to perform neighboring cell measurement, so that the terminal device can measure the neighboring cell and report the measurement result to the source base station.

In 202, the source base station evaluates the measurement results reported by the terminal device and decides whether to trigger a handover.

In 203, if the source base station decides to trigger a handover, it can send a handover request to the target base station.

In 204, after receiving the handover request sent by the source base station, the target base station can start admission according to the service information carried by the source base station, and perform wireless resource configuration.

In 205, the target base station sends a handover request confirmation message to the source base station, and returns the admission result and wireless resource configuration information in the target base station to the source base station. At this point, the handover preparation phase is complete.

The second stage, the handover execution stage (206-208) may include:

In 206, after the source base station receives the handover request confirmation message of the target base station, the terminal device can be triggered to perform handover.

In 207, the source base station can forward the buffered data, the data packet in transit, the system serial number of the data, etc. to the target base station. And, the target base station can buffer the data received from the source base station

In addition, the terminal device can disconnect from the source base station and establish synchronization with the target base station.

In 208, the terminal device synchronizes to the target base station. At this point, the switching execution phase is complete.

The third stage, the handover completion stage (209-212) can include:

In 209, the target base station sends a path switching request to a mobility management function (Access and Mobility Management Function, AMF).

In 210, after receiving the path switching request of the target base station, the AMF performs path switching with the User Plane Function (UPF) to clear the path mark of the user plane of the source base station.

In 211, after the path switching is completed, the AMF may send a path switching confirmation message to the target base station.

In 212, the target base station sends a terminal device context release message to the source base station to notify the source base station that the handover is successful, and trigger the source base station terminal device context. At this point, the switch is complete.

Figure 4 is a schematic diagram of the handover process based on the N2 interface. Figure 4 is a signaling interaction diagram in the handover preparation phase. As shown in Figure 4, it may include the following contents:

The handover preparation phase (S501~S506) may include:

In S501, the source base station sends a handover request to the core network control plane for requesting handover to the target base station.

In S502, information exchange between the core network control plane and the core network user plane is used to modify the PDU session of the UE on the target base station side.

Further, in S503, the core network control sends a handover request to the target base station.

In S504, the target base station sends a handover request response to the core network control plane.

In S505, information exchange between the core network control plane and the core network user plane is used to update the PDU session of the UE on the target base station side.

In S506, the core network control sends a handover command to the source base station to notify the source base station that the handover preparation phase has been completed and the handover execution phase can be executed.

In S507, an air interface handover process is performed between the UE, the source base station and the target base station.

In S508, the UE notifies the target base station that the handover is complete.

Further, in S509, the target base station sends a handover completion notification to the core network control plane.

In S510, the core network control plane and the core network user plane update the session, and delete the PDU session on the source base station side.

It can be seen from the handover process shown in Figs. 3 to 5 that the handover time of the UE from the source base station to the target base station may include air interface handover time and core network interaction time. The air interface handover time is the time for the UE on the air interface to switch from the source base station to the target base station.

The data interruption time is the time between when the UE disconnects from the source base station and establishes the connection with the target base station. It is roughly the same as the air interface handover time. The subtle difference is that the source base station may still be transmitting data when sending the handover command, so the data The interruption time may be the data interruption time that starts when the UE receives data and disconnects from the source base station.

Data jitter time, the time that data transmission is affected, can include data interruption time and the time required for data to be transmitted but forwarded.

It can be seen that cell handover will increase the data jitter time and affect the normal transmission of data. Especially for URLLC services, if they cannot be transmitted in time, the user experience will be affected.

FIG. 5 is a schematic flowchart of a wireless communication method 600 according to an embodiment of the present application. The method 600 may be executed by an access network device. For example, the access network device 110 shown in FIG. 1. As shown in FIG. 5, the method 600 includes some or all of the following content:

In 601, the first access network node sends first indication information to the first core network node, where the first indication information is used to trigger at least one second core network node to send at least one terminal device through the at least one access network node. Send a replicated data packet or receive a replicated data packet from at least one terminal device through the at least one access network node; or, the first indication information is used to trigger at least one second core network node to send at least one The access network node sends the copied data packet or receives the copied data packet sent by the at least one access network node.

It should be understood that, in the embodiment of the present application, redundant transmission may include uplink redundant transmission and downlink redundant transmission, where downlink redundant transmission may refer to at least one core network user plane node to multiple access network nodes Send the replicated downlink data, and further send the replicated downlink data to at least one terminal device through the multiple access network nodes, that is, the at least one core network user plane node may send the replicated downlink data to at least one terminal device through multiple access network nodes The sent replicated uplink data packet; the uplink redundant transmission may mean that at least one terminal device can send replicated uplink data to multiple access network nodes, and the multiple access network nodes can send the replicated uplink data to at least one core network user plane That is, the at least one core network user plane can receive replicated uplink data packets sent by at least one terminal device through multiple access network nodes.

That is, in the embodiment of the present application, the first access network node may instruct the first core network node to trigger the at least one second core network node to perform uplink redundant transmission and/or downlink redundant transmission through the first indication information. I transmitted.

Optionally, in some embodiments, the first core network node may be a core network control plane node, such as an AMF entity or an SMF entity, etc., and the second core network node may be a core network user plane node, such as UPF. Entities etc.

Optionally, in other embodiments, the first core network node and the second core network node may be the same core network node, for example, both are core network user plane nodes. In this case, the first access network node may include the first indication information in a data packet sent to the first core network node for triggering the first core network node to perform redundant transmission.

After receiving the first indication information, further, in 602, the first core network node may send a first message to at least one second core network node, where the first message is used to trigger the at least one second core The network node sends replicated data packets to multiple access network nodes or receives replicated data packets sent by the multiple access network nodes.

That is, the first core network node may send a first message to at least one second core network node according to the first indication information, and the first message is used to trigger the second core network node to perform redundant uplink transmission and/or Redundant downstream transmission.

Further, in 603, after receiving the first message, the at least one second core network node may send a replicated data packet to at least one access network node, where the replicated data packet is sent to at least A data packet of a terminal device, that is, the at least one second core network node can perform downlink redundant transmission through the at least one first access network node; or the at least one second core network node receives the at least one access network A replicated data packet sent by a node, where the replicated data packet is sent by at least one terminal device, that is, the at least one second core network node can perform redundant uplink transmission through the at least one first access network node.

As an example and not a limitation, the first indication information includes at least one of the following:

Instructions to perform redundant transmission, that is, whether to perform redundant transmission;

Sending an instruction of the copied data packet to the at least one access network node, that is, whether to perform redundant downlink transmission;

Receiving the instruction of the duplicated data packet sent by the at least one access network node, that is, whether to perform redundant uplink transmission;

Identification information of the at least one access network node, and information of the target access network node performing redundant transmission;

The correspondence between the at least one access network node and the at least one second core network node, for example, may be a one-to-one correspondence, or may also be a many-to-one correspondence;

The characteristic information of data packets that need to be redundantly transmitted;

Sending time information of the copied data packet;

Receiving time information of the copied data packet;

Instructions for redundant transmission between the core network and the access network;

Instructions for redundant transmission between the access network and terminal equipment.

Optionally, in some embodiments, the characteristic information of the data packet requiring redundant transmission includes at least one of the following:

The network protocol IP address, media access control MAC address, port number of the terminal device and/or application server, the data flow identifier corresponding to the data packet, the session identifier, and the application identifier.

Optionally, in some embodiments, the time information for sending the copied data packet includes the time point and/or duration of sending the copied data packet;

The time information for receiving the copied data packet includes the time point and/or the duration of time when the copied data packet is received.

Optionally, in some specific scenarios, for example, a cell handover scenario, the terminal device may be handed over from a source access network node to at least one target access network node. In this case, the first access network node may be The source access network node (corresponding to RAN node 1), the at least one second access network node may include at least one target access network node (corresponding to RAN node 2 to RAN node n) of the terminal device, optionally In some cases, the at least one second access network node may also include the source access network node.

In some embodiments, the source access network node may execute a handover preparation request to multiple access network nodes, and determine at least one access network node as the access to be accessed according to the reply information of the multiple access network nodes. In an implementation manner, the source access network node may notify the terminal device of the selected at least one access network node, for example, by sending a handover command to the terminal device. Optionally, it may also include the at least one access network node. The priority list of an access network node is determined by the terminal device which access network node to switch to. Or, in another implementation manner, the source access network node may determine one or more target access network nodes for the terminal device to switch, and send them to the terminal device through a switching command, and the terminal device directly sends it according to the source access network node The information of the target access network node is connected to the designated access network node.

Without loss of generality, the first access network node is the RAN node 1, the first core network node is the core network control plane node, the second core network node is the core network user plane node, and at least one access network node includes the RAN node At least one of 1 to RAN node n is taken as an example to describe the wireless communication method according to the embodiment of the present application, but the embodiment of the present application is not limited thereto.

It should be understood that in the embodiments of the present application, there may be one or more terminal devices that send uplink data packets to the core network user plane node, and the core network user plane node that receives the uplink data packets of the terminal device may be one. , It may also be multiple, which is not limited in the embodiment of the present application. The embodiment of this application only takes one UE and one core network user plane node as an example for description, but the embodiment of this application is not limited to this.

Optionally, in some embodiments, the method 600 further includes:

The first core network node selects auxiliary information (Single network slice selection assistance information, S-NSSAI, external network service node DNN, user subscription information, and user policy based on the single network slice selection assistance information of the data stream or session corresponding to the data packet) At least one item in the second core network node determines the at least one second core network node performing redundant transmission among the plurality of second core network nodes.

In the embodiment of the present application, in order to enable the terminal device to perform data transmission in time when accessing the target access network node, the source access network node may be prepared before the handover, or during the handover preparation process, or after the handover preparation process, Send first indication information to the first core network node for instructing the at least one second core network node to perform downlink redundant transmission and/or uplink redundant transmission. In this way, after the terminal device is switched The downlink data sent by the target access network node can be received immediately, which reduces the data jitter time during the handover process and improves user experience.

Optionally, in an embodiment of the present application, as shown in FIG. 6, the method 600 may further include:

604. The first access network node sends second indication information to a terminal device, where the second indication information is used to trigger the terminal device to send a copied data packet to at least one access network node and/or receive the A replicated data packet sent by at least one access network node.

That is, in the embodiment of the present application, the first access network node can trigger the terminal device to perform uplink redundant transmission and/or downlink redundant transmission through the second indication information, that is, trigger the terminal device to send At least one core network user plane node sends a duplicated data packet or receives at least one core network user plane a duplicated packet.

As an example and not a limitation, the second indication information includes at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.

For the detailed description of the second indication information, reference may be made to the related description of the first indication information, which will not be repeated here.

Further, in 605, the terminal device may send a replicated uplink data packet to at least one access network node, or receive a replicated downlink data packet sent by the at least one access network node.

In a handover scenario, the at least one access network node may include a source access network node and/or at least one target access network node, that is, the terminal device may initiate uplink redundant transmission to the at least one access network node. After the terminal device is successfully handed over, the at least one access network node can directly send the uplink data (for example, URLLC data) sent by the terminal device to the core network user plane node, which reduces the data jitter time during the handover process and improves users Experience.

It should be understood that, in this embodiment of the present application, the method 600 may only include 601, 602, and 603, or may only include 604 and 605, or may also include all the above steps.

In the following, the wireless communication method according to the embodiment of the present application will be described in detail in conjunction with the switching scenario of the terminal device.

In this embodiment, the first access network node may be a source access network node, and the source access network node may send the first indication information to the first core network node before the handover is ready, or may also be After the handover is prepared, the first indication information is sent to the first core network node, as shown in FIG. 7, or the first indication information may be sent to the first core network node in the handover preparation phase, for example, as shown in Fig. 8 or 9 shown.

Optionally, in the embodiment of the present application, the first indication information may be carried in any message or signaling for communication between the access network node and the core network node, which is not limited in the embodiment of the present application.

Optionally, in some embodiments, an information field may be added to the existing message to carry the first indication information, or a reserved information field may also be used to carry the first indication information.

For example, the first indication information may be carried in a Handover Request (Handover Request) or Handover Required (Handover Required) sent by the first access network node, or may also be carried in other core network nodes and RAN nodes. In the messages that communicate with each other.

Optionally, in other embodiments, the first indication information may also be carried in a newly-added message or signaling, that is, a newly-added message may be used to trigger a core network user plane node to perform redundant transmission.

Optionally, in the embodiment of the present application, the source access network node may send second indication information to the terminal device before handover preparation, or may also send second indication information to the terminal device after handover preparation, such as As shown in FIG. 7, or alternatively, the second indication information may be sent to the terminal device in the handover preparation phase, for example, as shown in FIG. 8 or 9.

Optionally, in the embodiment of the present application, the second indication information may be carried in any message or signaling for communication between the access network node and the terminal device, for example, in an RRC message or physical layer signaling, The embodiments of this application do not limit this.

Optionally, in some embodiments, an information field may be added to the existing message to carry the second indication information, or a reserved information field may also be used to carry the first indication information.

For example, the second indication information may be carried in a handover request (Handover Command) sent by the first access network node, or may also be carried in other messages used for communication between the access network node and the terminal device.

Optionally, in other embodiments, the second indication information may also be carried in a newly added message or signaling, that is, the newly added message may be used to trigger the terminal device to perform redundant transmission.

Figure 8 shows a schematic flow chart of a specific implementation of triggering redundant transmission in the handover preparation process, where Figure 8 is based on the N2 interface-based handover process shown in Figure 4, as shown in Figure 8, which may include the following content:

In S301, the source base station may send a handover request to the core network control plane, and the handover request may include the first indication information.

Wherein, S301 may correspond to S501 in FIG. 4.

In S302, the core network control plane may send a session modification request to the core network user plane node, and the session modification request includes the first indication information to trigger the core network user plane node to send a request to at least one access network node. Sending a duplicated data packet and/or receiving a duplicated data packet sent by the at least one access network node. That is, the first message may be a session modification request message.

In S303, the core network control plane may send a handover request to the target base station.

In S304, the target base station may send a handover request response to the core network control plane.

In S305, the core network user sends a session modification response to the core network control plane.

In S310, the source base station may also send a handover command (Handover Command) to the UE, and the handover command includes the second indication information.

It should be understood that S302, S303, S304, S305, and S310 may correspond to S502, S503, S504, S505, and S506 in FIG. 4.

After S305, in S311, the core network user plane node may send the copied downlink data to at least one target base station.

Optionally, the core network user plane node may also send the copied downlink data to the source base station at the same time, or the core network user plane node may also send the copied downlink data to the source base station before S304.

Therefore, the first access network node may send a handover request to the core network control plane node in the handover preparation process, and carry the first indication information through the handover request, and notify the core network control plane node to trigger The core network user plane node performs redundant transmission.

At the same time, the first access network node may also send a handover command to the UE during the handover preparation process, and the handover command carries the second indication information to trigger the terminal device to perform redundant transmission.

Figure 9 shows a schematic flow chart of a specific implementation of triggering redundant transmission in the handover preparation process, where Figure 9 is based on the Xn interface-based handover process shown in Figure 3, during which the air interface handover process Parallel to the session establishment process. As shown in Figure 9, it can include the following:

In 401, the target base station may send a session establishment request or a session update request to the core network control plane. The session establishment request or the session update request may include the first indication information, where the first indication information may be sent by the source base station. For the target base station, for example, the source base station sends the first indication information to the target base station through a handover request;

Optionally, in some embodiments, in 402, the source base station sends a session establishment request or a session update request to the core network control plane, and the first indication information may be included in the session establishment request or the session update request.

That is, the first indication information may be directly sent by the source base station to the core network control plane node, or may also be sent to the core network control plane node through the target base station.

Further, in 403, the core network control plane node may send a session establishment request or a session update request to the core network user plane node, and the session establishment request or the session update request carries the first indication information. That is, the first message may be a session establishment request or a session update request message.

In S405, before the handover of the terminal device is completed, the target base station may buffer or discard the currently received downlink data, and further, after the handover is completed, the target base station sends the downlink data to the terminal device.

In this embodiment, the source base station may send the second indication information to the terminal device in the handover command that triggers the UE air interface handover.

Optionally, in some embodiments, the access network node and the core network user plane node may correspond to multiple access network nodes with one core network user plane node. For example, as shown in FIG. 10, the core network The network user plane node may send the copied downlink data to the multiple access network nodes, and further, send the copied downlink data to at least one terminal device through the multiple access network nodes.

Corresponding to the example shown in Figure 10, the core network user plane node corresponds to RAN node 1 to RAN node n, then the core network user plane node can send the copied downlink data to RAN node 1 to RAN node n, and further, the RAN node 1-RAN node n can send the copied downlink data to the UE. Similarly, the terminal device can send uplink data to the RAN node 1 to RAN node n, and further, the RAN node 1 to RAN node n can send the copied uplink data to the core network user plane node.

Optionally, in other embodiments, the access network node and the core network user plane node may have a one-to-one correspondence, as shown in FIG. 11, in this case, the second core network node may The downlink data is sent to the corresponding access network node. Further, the access network node can send the copied downlink data to other access network nodes through the Xn interface, so as to receive the copied downlink data. The copied downlink data can be transmitted to the terminal device.

Corresponding to the example shown in FIG. 11, the core network user plane node corresponds to RAN node 2, and the core network user plane node can send downlink data to RAN node 2. Further, the RAN node 2 can send copied downlink data to RAN Node 1 and other RAN nodes, further, the RAN node 1 to RAN node n may send the copied downlink data to the UE. Similarly, the terminal device can send uplink data to the RAN node 2. Further, the RAN node 2 can copy the uplink data and send the uplink data to the RAN node 1 and other RAN nodes respectively, and further, the RAN node 1~ The RAN node n may send the copied uplink data to the user plane node of the core network.

Optionally, in some embodiments, the first access network node sends a copied data packet to the at least one second access network node when a specific condition is met.

For example, the specific conditions include at least one of the following:

The data packet is a specific service, for example, a URLLC service, the quality of service Qos parameter of the data packet is a specific Qos parameter, and the protocol data unit PDU session corresponding to the data packet is a specific PDU session, and the data packet corresponds to The data stream is a specific data stream, an indication of the first core network node.

In the following, in conjunction with specific embodiments, the method for stopping redundant transmission is described.

Optionally, as an embodiment, in a case where the duration of the at least one second core network node performing downlink redundant transmission exceeds the first duration, the at least one second core network node stops transmitting to the at least one Part or all of the access network nodes in the access network nodes send the replicated data packets; or, in the case that the at least one second core network node performs uplink redundant transmission for longer than the second time period, the at least A second core network node stops receiving the duplicated data packets sent by some or all of the access network nodes in the at least one access network node.

Optionally, the first duration is pre-configured or acquired from the first core network node, for example, it may be acquired from the first indication information in the first message; the second duration It is pre-configured or obtained from the first core network node, for example, it may be obtained from the first indication information in the first message.

Optionally, the first duration and the second duration may be equal or different.

In other words, the core network user plane node can stop performing redundant transmission when the duration of redundant transmission reaches a certain length of time.

It should be understood that the core network user plane node can stop the uplink redundant transmission and the downlink redundant transmission at the same time, or it can also stop the uplink redundant transmission and the downlink redundant transmission at the same time, for example, the uplink redundant transmission. The redundant transmission with the downlink may be controlled based on a timer, or may also be controlled based on a different timer, and the duration of the different timers may be equal or different.

For example, when the core network user plane node starts to perform uplink redundant transmission, the first timer can be started, and when the first timer expires, the uplink redundant transmission is stopped; when the downlink redundant transmission is started, During transmission, the second timer is started, and when the second timer expires, the downlink redundant transmission is stopped. Alternatively, a timer may be started when the redundant transmission is started, and when the timer expires, the uplink redundant transmission and the downlink redundant transmission are stopped.

It should be understood that, in the embodiment of the present application, the second core network node stopping redundant transmission may include but is not limited to the following situations:

Stop sending redundant downlink data to all access network nodes;

Stop sending redundant downlink data to some access network nodes;

Stop redundant transmission of specific data streams on specific access network nodes;

Stop redundant transmission of specific services on specific access network nodes;

Stop the uplink redundant transmission;

Stop the downstream redundant transmission.

Optionally, as another embodiment, in a case where the duration of redundant transmission by the at least one second core network node exceeds the third duration, a fourth message is sent to the at least one second core network node, where , The fourth message is used to instruct the at least one second core network node to stop sending duplicate data packets to some or all of the at least one access network node, or stop receiving the at least one access network node A duplicated data packet sent by some or all of the access network nodes in an access network node.

Optionally, the third duration is pre-configured or determined according to the first indication information. For example, the third duration may be determined according to the time information for sending or receiving the copied data packet in the first indication information. The third duration.

That is to say, when the time length for the core network user plane node to perform redundant transmission reaches a certain length of time, the core network control plane node may instruct the core network user plane node to stop performing redundant transmission.

In some cases, the core network control plane node may consider that after sending the first message to the core network user plane node, the core network user plane node starts to perform redundant transmission.

For example, the core network user plane node may start a timer after sending the first message, and when the timer expires, send a fourth message to the core network user plane node to instruct the core network user plane node to stop redundancy. I transmitted.

Optionally, as yet another embodiment, in the case that the time period for the terminal device to perform uplink redundant transmission exceeds the fourth time period, the terminal device stops accessing part or all of the at least one access network node The network node sends the copied data packet;

In the case that the duration of the downlink redundant transmission by the terminal device exceeds the fifth duration, the terminal device stops receiving the copied data packet sent by some or all of the at least one access network node .

Optionally, the fourth duration is pre-configured or determined according to the second indication information; or the fifth duration is pre-configured or determined according to the second indication information.

Optionally, the fourth duration and the fifth duration may be equal or not equal.

In other words, when the duration of the redundant transmission of the terminal device reaches a certain duration, the terminal device stops performing the redundant transmission.

It should be understood that the terminal device can stop the uplink redundant transmission and the downlink redundant transmission at the same time, or it can also stop the uplink redundant transmission and the downlink redundant transmission at the same time, for example, the uplink redundant transmission and the downlink redundant transmission. Redundant transmission can be based on one timer control, or can also be based on different timer control, and the duration of the different timers can be equal or different.

For example, when the terminal device starts to perform uplink redundant transmission, the third timer can be started, and when the third timer expires, the uplink redundant transmission is stopped; the terminal device starts to perform downlink redundant transmission. During transmission, the fourth timer is started, and when the fourth timer expires, the downstream redundant transmission is stopped; or when the redundant transmission is started, a timer is started, and when the timer expires In this case, stop the uplink redundant transmission and the downlink redundant transmission.

Optionally, as yet another embodiment, the first access network node sends a second message to the first core network node and/or sends a third message to the terminal device, where the second message is used to indicate the The first core network node stops at least one second core network node from sending copied data packets to at least one access network node and/or receiving the copied data packets sent by the at least one access network node, and the third message is used for Stopping the terminal device from sending the replicated data packet to the at least one access network node and/or receiving the replicated data packet sent by the at least one access network node.

That is, the access network node can instruct the core network user plane node or terminal device to stop redundant transmission.

Optionally, in a handover scenario, the first access network node may be a source access network node, or may also be a target access network node.

In this case, the first access network node may send the second message to the first core network node and/or send the third message to the terminal device after the terminal device performs the handover.

After the terminal device performs the handover, the terminal device establishes a connection with the target access network node. The core network user plane node and the terminal device do not need to perform redundant transmission, but can directly transmit data through the target access network node Transmission, in this case, it can instruct the core network user plane node and terminal equipment to stop redundant transmission.

As an embodiment, the first access network node is the source access network node, and the first access network node may send the terminal device context release message to the first access network node The first core network node sends the second message and/or sends the third message to the terminal device. Wherein, after receiving the terminal device context release message, it can be considered that the handover of the terminal device is completed.

Optionally, the terminal device context release message may be sent by the target access network node, which corresponds to a handover scenario based on the Xn interface.

Alternatively, the terminal device context release message may also be sent by a core network control plane node, which corresponds to a handover scenario based on the N2 interface.

As another embodiment, the first access network node is the target access network node, and the first access network node may send the handover complete message sent by the terminal device to the first access network node. A core network node sends the second message and/or sends the third message to the terminal device.

The handover complete message may correspond to the handover complete message in S508 in FIG. 4. After receiving the handover complete message, it can be considered that the terminal device has established a connection with the target access network node, and can use the target access network node. The node performs data transmission.

As still another embodiment, the first access network node may also send all data to the first core network node when the time period for the at least one second core network node to perform redundant transmission exceeds the sixth time period. The second message; and/or

The first access network node sends the third message to the terminal device when the duration of redundant transmission by the terminal device exceeds the seventh duration.

In other words, the first access network node may also instruct the core network control plane node to trigger the core network user plane node to stop redundant transmission when the core network user plane node performs redundant transmission for a certain period of time, or The first access network node may also instruct the terminal device to stop performing redundant transmission when the duration of redundant transmission by the terminal device reaches a specific duration.

Optionally, the sixth duration is preconfigured, or the sixth duration is time information for sending or receiving the copied data packet in the first indication information, and the first indication information is the first indication information. Sent by an access network node to the first core network node; or

The seventh duration is pre-configured, or the seventh duration is the time information for sending or receiving the copied data packet in the second indication information, and the second indication information is the first access network Sent by the node to the terminal device.

Optionally, in some embodiments, the second message includes at least one of the following:

The identification information of the second access network node that stops sending replicated data packets or receiving replicated data packets, for example, stop sending replicated data packets to which access network nodes, or stop receiving replicated data packets sent by which access network nodes data pack;

Stop the replication transmission of a specific data stream on a specific access network node;

Stop the copy transmission of uplink data and/or downlink data;

Time information to stop redundant transmission.

That is to say, the second message can be used to stop redundant transmission of the user plane node of the core network. For the specific meaning, refer to the related description of stopping redundant transmission in the foregoing embodiment, which will not be repeated here.

Optionally, in some embodiments, the third message includes at least one of the following:

The identification information of the second access network node that stops sending the copied data packet or receives the copied data packet;

Stop the copy transmission of uplink data and/or downlink data;

Time information to stop redundant transmission.

Optionally, in some embodiments, the time information for canceling redundant transmission includes:

Cancel the time point and time length information of redundant transmission.

That is to say, the third message can be used to stop redundant transmission of the terminal device, and the specific meaning can refer to the related description of stopping redundant transmission in the foregoing embodiment, which will not be repeated here.

The method embodiments of the present application are described in detail above with reference to Figs. 2 to 11, and the device embodiments of the present application are described in detail below in conjunction with Figs. 12 to 19. It should be understood that the device embodiments and the method embodiments correspond to each other and are similar The description can refer to the method embodiment.

FIG. 12 shows a schematic block diagram of a wireless communication device 1200 according to an embodiment of the present application. As shown in Figure 12, the device 1200 includes:

The communication module 1210 is configured to send first indication information to the first core network node, and/or send second indication information to the terminal device;

Wherein, the first indication information is used to trigger at least one second core network node to send a copied data packet to at least one terminal device through at least one access network node or to receive a data packet from at least one terminal device through the at least one access network node. Or, the first indication information is used to trigger at least one second core network node to send the copied data packet to at least one access network node or to receive the data packet sent by the at least one access network node The copied data package;

The second indication information is used to trigger the terminal device to send a copied data packet to at least one second core network node through at least one access network node or to receive data packets from at least one second core network node through at least one access network node. A replicated data packet sent by a node; or, the second indication information is used to trigger the terminal device to send a replicated data packet to at least one access network node or receive a replicated data packet sent by at least one access network node.

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

Optionally, the second indication information includes at least one of the following:

Optionally, the characteristic information of the data packet requiring redundant transmission includes at least one of the following:

Optionally, the time information for sending the copied data packet includes the time point and/or duration of sending the copied data packet;

Optionally, the at least one access network node includes at least one second access network node, and the communication module is specifically configured to: after the device and the at least one second access network node perform handover preparation, Sending the first indication information to the first core network node, and/or sending the second indication information to the terminal device.

Optionally, the at least one access network node includes at least one second access network node, and the communication module is specifically configured to: prepare for handover between the device and the at least one second access network node, Sending the first indication information to the first core network node, and/or sending the second indication information to the terminal device.

Optionally, the communication module is also used for:

Sending the first indication information to the first core network node through a handover request.

Optionally, the communication module is further configured to send the first indication information to the first core network node through a session establishment request or a session update request.

Optionally, the communication module is further configured to send the second indication information to the terminal device through a handover command.

Optionally, the at least one access network node includes at least one second access network node, and the communication module is further configured to: before the device and the at least one second access network node perform handover preparation, Sending the first indication information to the first core network node, and/or sending the second indication information to the terminal device.

Optionally, the at least one second access network node is an access network node to be accessed by a terminal device, and the device is an access network node to which the terminal device currently accesses.

Optionally, the first core network node is a core network control plane node, and the second core network node is a core network user node.

Optionally, the first core network node and the second core network node are the same core network node, and the first core network node and the second core network node are core network user plane nodes or core network nodes Control surface node.

It should be understood that the device 1200 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 device 1200 are used to implement the operations shown in FIGS. 2 to 11 respectively. The corresponding process of the first access network node in the method is not repeated here for brevity.

FIG. 13 shows a schematic block diagram of a wireless communication device 1300 according to an embodiment of the present application. As shown in FIG. 13, the device 1300 includes:

The communication module 1310 is configured to receive first indication information sent by a first access network node, where the first indication information is used to instruct the device to trigger at least one second core network node to send a copy of the data to at least one access network node Data packet or receiving a copied data packet sent by the at least one access network node, or the first indication information is used to instruct the device to trigger at least one second core network node to send at least One terminal device sends a copied data packet or receives a copied data packet from at least one terminal device sent through the at least one access network node; and

Send a first message to the at least one second core network node, where the first message is used to trigger the at least one second core network node to send a copied data packet to the at least one access network node or to receive the A copied data packet sent by at least one access network node, or the first message is used to trigger the at least one second core network node to send or receive a copied data packet to at least one terminal device through at least one access network node A replicated data packet from at least one terminal device sent through the at least one access network node.

Optionally, the first message includes the first indication information, and the first indication information includes at least one of the following:

Optionally, the at least one access network node includes at least one second access network node, and the communication module is specifically configured to:

After the first access network node and the at least one second access network node perform handover preparation, receive the first indication information sent by the first access network node.

When the first access network node and the at least one second access network node perform handover preparation, receiving the first indication information sent by the first access network node.

Optionally, the communication module is specifically used for:

Receiving a handover request sent by the first access network node, where the handover request includes the first indication information.

Optionally, the communication module is also used for:

Sending a session modification message to the at least one second core network node, where the session modification message includes the first indication information.

Optionally, the communication module is specifically used for:

Receiving a session establishment request or a session update request sent by the first access network node, where the session establishment request or the session update request includes the first indication information.

Optionally, the communication module is also used for:

Sending a session establishment request or a session update request to the at least one second core network node, where the session establishment request or the session update request includes the first indication information.

Before the first access network node and the at least one second access network node perform handover preparation, receive the first indication information sent by the first access network node.

Optionally, the at least one second access network node is an access network node to be accessed by the terminal device, and the first access network node is an access network node that the terminal device currently accesses.

Optionally, the device further includes:

The determining module is used to select at least one of the auxiliary information S-NSSAI, the external network service node DNN, the user's subscription information and the user policy according to the data stream or the single network slice of the session corresponding to the data packet. The at least one second core network node that performs redundant transmission is determined among the two core network nodes.

Optionally, in the case that the time period for the at least one second core network node to perform downlink redundant transmission exceeds the first time period, the at least one second core network node stops sending data to the at least one access network node Part or all of the access network nodes send the replicated data packet; or, in the case that the at least one second core network node performs uplink redundant transmission for longer than the second time period, the at least one second core network node The node stops receiving the replicated data packet sent by some or all of the access network nodes in the at least one access network node.

Optionally, the first duration is pre-configured or acquired from the device; the second duration is pre-configured or acquired from the device.

Optionally, the communication module is also used for:

In the case that the time period for the at least one second core network node to perform redundant transmission exceeds the third time period, a fourth message is sent to the at least one second core network node, where the fourth message is used to indicate The at least one second core network node stops sending replicated data packets to some or all of the at least one access network node, or stops receiving some or all of the at least one access network node A copied data packet sent by an access network node.

Optionally, the third duration is pre-configured or determined according to the first indication information.

Optionally, the device is a core network user plane node, and the second core network node is a core network user plane node.

Optionally, the device and the second core network node are the same core network node, and the device and the second core network node are core network user plane nodes or core network control plane nodes.

It should be understood that the device 1300 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 device 1300 are used to implement the operations shown in FIGS. 2 to 11 respectively. The corresponding process of the first core network node in the method is omitted here for brevity.

FIG. 14 shows a schematic block diagram of a wireless communication device 1400 according to an embodiment of the present application. As shown in FIG. 14, the device 1400 includes:

The communication module 1410 is configured to receive second indication information sent by a first access network node, where the second indication information is used to trigger the device to send a copy of the data to at least one second core network node through at least one access network node A data packet or receiving a copied data packet from at least one second core network node and sent through the at least one access network node; or, the second indication information is used to trigger the device to send to at least one access network node Send a duplicated data packet or receive a duplicated data packet sent by at least one access network node.

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the device.

The network protocol IP address of the device and/or the application server, the media access control MAC address, the port number, the data flow identifier corresponding to the data packet, the session identifier, and the application identifier.

Optionally, the communication module is specifically used for:

Receiving a handover command sent by the first access network node, where the handover command includes the second indication information.

Optionally, the communication module is also used for:

In a case where the time period for the device to perform uplink redundant transmission exceeds the fourth time period, stop sending the duplicated data packet to some or all of the at least one access network node;

When the duration of the downlink redundant transmission by the device exceeds the fifth duration, stop receiving the duplicated data packets sent by some or all of the at least one access network node.

It should be understood that the device 1400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the device 1400 are used to implement the functions shown in FIGS. 2 to 11 respectively. For the sake of brevity, the corresponding process of the terminal device in the method will not be repeated here.

FIG. 15 shows a schematic block diagram of a wireless communication device 1500 according to an embodiment of the present application. As shown in FIG. 15, the device 1500 includes:

The communication module 1510 is configured to send the copied data packet to at least one second access network node.

Optionally, the communication module is also used for:

Receiving a downlink data packet sent by at least one second core network node and/or an uplink data packet sent by a terminal device;

Generating the copied data packet according to the downlink data packet and/or the uplink data packet.

Optionally, the communication module is specifically used for:

When a specific condition is met, sending the copied data packet to the at least one second access network node.

Optionally, the specific condition includes at least one of the following:

The data packet is a specific service, the quality of service Qos parameter of the data packet is a specific Qos parameter, the protocol data unit PDU session corresponding to the data packet is a specific PDU session, and the data stream corresponding to the data packet is specific data Flow, an indication of the first core network node.

Optionally, the second core network node is a core network user plane node.

It should be understood that the device 1500 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 device 1500 are used to implement the operations shown in FIGS. 2 to 11 respectively. The corresponding process of the first access network node in the method is not repeated here for brevity.

FIG. 16 shows a schematic block diagram of a wireless communication device 1600 according to an embodiment of the present application. As shown in Figure 16, the device 1600 includes:

The communication module 1610 is configured to send a second message to the first core network node, and/or send a third message to the terminal device,

Wherein, the second message is used to instruct the first core network node to stop at least one second core network node from sending copied data packets to at least one access network node and/or receiving the at least one access network node sending The third message is used to stop the terminal device from sending the copied data packet to the at least one access network node and/or receiving the copied data packet sent by the at least one access network node .

Optionally, the communication module is specifically used for:

After the terminal device performs the handover, sending the second message to the first core network node and/or sending the third message to the terminal device.

Optionally, the device is the source access network node, and the communication module is specifically configured to:

After receiving the terminal device context release message, send the second message to the first core network node and/or send the third message to the terminal device.

Optionally, the device is the target access network node, and the communication module is specifically configured to:

After receiving the handover complete message sent by the terminal device, sending the second message to the first core network node and/or sending the third message to the terminal device.

Optionally, the communication module is specifically used for:

In a case where the duration of redundant transmission by the at least one second core network node exceeds the sixth duration, sending the second message to the first core network node; and/or

In the case where the duration of redundant transmission by the terminal device exceeds the seventh duration, the third message is sent to the terminal device.

Optionally, the sixth duration is pre-configured, or the sixth duration is the time information for sending or receiving the copied data packet in the first indication information, and the first indication information is the device Sent to the first core network node; or

The seventh duration is pre-configured, or the seventh duration is the time information for sending or receiving the copied data packet in the second indication information, and the second indication information is sent by the device to the Terminal equipment.

Optionally, the second message includes at least one of the following: stop sending the copied data packet or receive the identification information of the second access network node of the copied data packet; stop the specific access network node on the specific access network node. Copy transmission of data stream; stop copy transmission of uplink data and/or downlink data; stop time information of redundant transmission.

Optionally, the third message includes at least one of the following: stop sending the duplicated data packet or receive the identification information of the second access network node of the duplicated data packet; stop the specific access network node on the specific access network node Copy transmission of data stream; stop copy transmission of uplink data and/or downlink data; stop time information of redundant transmission.

Optionally, the time information for canceling redundant transmission includes: time point and time length information for canceling redundant transmission.

It should be understood that the device 1600 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 device 1600 are used to implement the operations shown in FIGS. 2 to 11 respectively. The corresponding process of the first access network node in the method is not repeated here for brevity.

FIG. 17 is a schematic structural diagram of a communication device 1700 according to an embodiment of the present application. The communication device 1700 shown in FIG. 17 includes a processor 1710, and the processor 1710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 17, the communication device 1700 may further include a memory 1720. The processor 1710 may call and run a computer program from the memory 1720 to implement the method in the embodiment of the present application.

The memory 1720 may be a separate device independent of the processor 1710, or may be integrated in the processor 1710.

Optionally, as shown in FIG. 17, the communication device 1700 may further include a transceiver 1730, and the processor 1710 may control the transceiver 1730 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 1730 may include a transmitter and a receiver. The transceiver 1730 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1700 may specifically be an access network node in an embodiment of the present application, and the communication device 1700 may implement the corresponding processes implemented by the access network node in each method in the embodiments of the present application. For brevity, This will not be repeated here.

Optionally, the communication device 1700 may specifically be the core network node of the embodiment of the present application, and the communication device 1700 may implement the corresponding processes implemented by the core network node in the various methods of the embodiments of the present application. For the sake of brevity, it is not here. Repeat it again.

Optionally, the communication device 1700 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 1700 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the application, for the sake of brevity , I won’t repeat it here.

FIG. 18 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1800 shown in FIG. 18 includes a processor 1810. The processor 1810 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. 18, the chip 1800 may further include a memory 1820. The processor 1810 can call and run a computer program from the memory 1820 to implement the method in the embodiment of the present application.

The memory 1820 may be a separate device independent of the processor 1810, or may be integrated in the processor 1810.

Optionally, the chip 1800 may further include an input interface 1830. The processor 1810 can control the input interface 1830 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 1800 may further include an output interface 1840. The processor 1810 can control the output interface 1840 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the access network node or the core network node in the embodiment of the present application, and the chip can implement the corresponding process implemented by the access network node or the core network node in each method of the embodiment of the present application , For the sake of brevity, I will not repeat it here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For brevity, here is No longer.

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. 19 is a schematic block diagram of a communication system 1900 according to an embodiment of the present application. As shown in FIG. 19, the communication system 1900 includes a terminal device 1910, an access network device 1920, and a core network device 1930.

Wherein, the terminal device 1910 can be used to implement the corresponding function implemented by the terminal device in the above method, and the access network device 1920 can be used to implement the corresponding function implemented by the first access network node in the above method. For brevity The core network device 1930 may be used to implement the corresponding functions implemented by the first core network node in the foregoing method, and will not be repeated here for brevity.

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 can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned 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 embodiments of the present application may be volatile memory or 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 Link 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 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 mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method 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 mobile terminal/terminal device in the embodiment of the present 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 the present application, For brevity, I won't 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 mobile terminal/terminal device in the embodiment of the present application. When the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated 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 first access network node sends first indication information to the first core network node, and/or sends second indication information to the terminal device;

Wherein, the first indication information is used to trigger at least one second core network node to send a copied data packet to at least one terminal device through at least one access network node or to receive a data packet from at least one terminal device through the at least one access network node. Or, the first indication information is used to trigger at least one second core network node to send the copied data packet to at least one access network node or to receive the data packet sent by the at least one access network node The copied data package;

The second indication information is used to trigger the terminal device to send a copied data packet to at least one second core network node through at least one access network node or to receive data packets from at least one second core network node through at least one access network node. A replicated data packet sent by a node; or, the second indication information is used to trigger the terminal device to send a replicated data packet to at least one access network node or receive a replicated data packet sent by at least one access network node.
The method according to claim 1, wherein the first indication information includes at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.
The method according to claim 1 or 2, wherein the second indication information includes at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.
The method according to claim 2 or 3, wherein the characteristic information of the data packet requiring redundant transmission includes at least one of the following:

The network protocol IP address, media access control MAC address, port number of the terminal device and/or application server, the data flow identifier corresponding to the data packet, the session identifier, and the application identifier.
The method according to any one of claims 2 to 4, wherein the time information for sending the copied data packet includes the time point and/or duration of sending the copied data packet;

The time information for receiving the copied data packet includes the time point and/or the duration of time when the copied data packet is received.
The method according to any one of claims 1 to 5, wherein the at least one access network node comprises at least one second access network node, and the first access network node is connected to the first core network The node sending the first indication information and/or sending the second indication information to the terminal device includes:

After the first access network node and the at least one second access network node perform handover preparations, the first access network node sends the first indication information to the first core network node, and /Or sending the second indication information to the terminal device.
The method according to any one of claims 1 to 5, wherein the at least one access network node comprises at least one second access network node, and the first access network node is connected to the first core network The node sending the first indication information and/or sending the second indication information to the terminal device includes:

In the preparation for the handover between the first access network node and the at least one second access network node, the first access network node sends the first indication information to the first core network node, and /Or sending the second indication information to the terminal device.
The method according to claim 7, wherein the sending of the first indication information by the first access network node to the first core network node comprises:

The first access network node sends the first indication information to the first core network node through a handover request.
The method according to claim 7, wherein the sending of the first indication information by the first access network node to the first core network node comprises:

The first access network node sends the first indication information to the first core network node through a session establishment request or a session update request.
The method according to any one of claims 7 to 9, wherein the sending of the second indication information by the first access network node to the terminal device comprises:

The first access network node sends the second indication information to the terminal device through a handover command.
The method according to any one of claims 1 to 5, wherein the at least one access network node comprises at least one second access network node, and the first access network node is connected to the first core network The node sending the first indication information and/or sending the second indication information to the terminal device includes:

Before the first access network node and the at least one second access network node perform handover preparation, the first access network node sends the first indication information to the first core network node, and /Or sending the second indication information to the terminal device.
The method according to any one of claims 6 to 11, wherein the at least one second access network node is an access network node to be accessed by a terminal device, and the first access network node is The access network node currently accessed by the terminal device.
The method according to any one of claims 1 to 12, wherein the first core network node is a core network control plane node, and the second core network node is a core network user node.
The method according to any one of claims 1 to 12, wherein the first core network node and the second core network node are the same core network node, and the first core network node and the second core network node The second core network node is a core network user plane node or a core network control plane node.
A wireless communication method, characterized in that it comprises:

The first core network node receives first indication information sent by the first access network node, where the first indication information is used to instruct the first core network node to trigger at least one second core network node to send at least one access network node Send a replicated data packet or receive a replicated data packet sent by the at least one access network node, or the first indication information is used to instruct the first core network node to trigger at least one second core network node to pass at least One access network node sends a copied data packet to at least one terminal device or receives a copied data packet from at least one terminal device sent through the at least one access network node;

The first core network node sends a first message to the at least one second core network node, where the first message is used to trigger the at least one second core network node to send a copy to the at least one access network node Or receive a duplicated data packet sent by the at least one access network node, or the first message is used to trigger the at least one second core network node to send to at least one terminal device through at least one access network node Sending a duplicated data packet or receiving a duplicated data packet sent by the at least one access network node from at least one terminal device.
The method according to claim 15, wherein the first message includes the first indication information, and the first indication information includes at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.
The method according to claim 16, wherein the characteristic information of the data packet that needs to be redundantly transmitted includes at least one of the following:

The network protocol IP address, media access control MAC address, port number of the terminal device and/or application server, the data flow identifier corresponding to the data packet, the session identifier, and the application identifier.
The method according to claim 16 or 17, wherein the time information for sending the copied data packet includes the time point and/or duration of sending the copied data packet;

The time information for receiving the copied data packet includes the time point and/or the duration of time when the copied data packet is received.
The method according to any one of claims 15 to 18, wherein the at least one access network node includes at least one second access network node, and the first core network node receives the first access network node. The first indication information sent by the node includes:

After the first access network node and the at least one second access network node perform handover preparation, the first core network node receives the first indication information sent by the first access network node.
The method according to any one of claims 15 to 18, wherein the at least one access network node includes at least one second access network node, and the first core network node receives the first access network node. The first indication information sent by the node includes:

When the first access network node and the at least one second access network node perform handover preparation, the first core network node receives the first indication information sent by the first access network node.
The method according to claim 20, wherein the first core network node receiving the first indication information sent by the first access network node comprises:

The first core network node receives a handover request sent by the first access network node, where the handover request includes the first indication information.
The method according to claim 21, wherein the sending of the first message by the first core network node to the at least one second core network node comprises:

The first core network node sends a session modification message to the at least one second core network node, where the session modification message includes the first indication information.
The method according to claim 20, wherein the first core network node receiving the first indication information sent by the first access network node comprises:

The first core network node receives a session establishment request or a session update request sent by the first access network node, and the session establishment request or the session update request includes the first indication information.
The method according to claim 23, wherein the sending of the first message by the first core network node to the at least one second core network node comprises:

The first core network node sends a session establishment request or a session update request to the at least one second core network node, where the session establishment request or the session update request includes the first indication information.
The method according to any one of claims 15 to 18, wherein the at least one access network node includes at least one second access network node, and the first core network node receives the first access network node. The first indication information sent by the node includes: including:

Before the first access network node and the at least one second access network node perform handover preparation, the first core network node receives the first indication information sent by the first access network node.
The method according to any one of claims 19 to 25, wherein the at least one second access network node is an access network node to be accessed by a terminal device, and the first access network node is The access network node currently accessed by the terminal device.
The method according to any one of claims 15 to 26, wherein the method further comprises:

The first core network node selects at least one of auxiliary information S-NSSAI, external network service node DNN, user subscription information, and user policy according to the single network slice of the data stream or session corresponding to the data packet. Determining the at least one second core network node for redundant transmission among the second core network nodes.
The method according to any one of claims 15 to 27, characterized in that, in the case that the at least one second core network node performs downlink redundant transmission for a duration longer than a first duration, the at least one second core network node The second core network node stops sending replicated data packets to some or all of the at least one access network node; or, the duration of uplink redundant transmission on the at least one second core network node exceeds In the case of the second duration, the at least one second core network node stops receiving the duplicated data packets sent by some or all of the access network nodes in the at least one access network node.
The method according to claim 28, wherein the first duration is pre-configured or obtained from the first core network node; the second duration is pre-configured or obtained from the first core network node; Obtained by a core network node.
The method according to any one of claims 15 to 29, wherein the method further comprises:

In the case that the time period for the at least one second core network node to perform redundant transmission exceeds the third time period, a fourth message is sent to the at least one second core network node, where the fourth message is used to indicate The at least one second core network node stops sending replicated data packets to some or all of the at least one access network node, or stops receiving some or all of the at least one access network node A copied data packet sent by an access network node.
The method according to claim 30, wherein the third duration is pre-configured or determined according to the first indication information.
The method according to any one of claims 15 to 30, wherein the first core network node is a core network user plane node, and the second core network node is a core network user plane node.
The method according to any one of claims 15 to 32, wherein the first core network node and the second core network node are the same core network node, and the first core network node and the second core network node The second core network node is a core network user plane node or a core network control plane node.
A wireless communication method, characterized in that the method includes:

The terminal device receives second indication information sent by the first access network node, where the second indication information is used to trigger the terminal device to send a copied data packet to at least one second core network node through at least one access network node or Receiving a replicated data packet sent by the at least one access network node from at least one second core network node; or, the second indication information is used to trigger the terminal device to send a replicated data packet to at least one access network node Or receive a duplicated data packet sent by at least one access network node.
The method according to claim 34, wherein the second indication information comprises at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.
The method according to claim 35, wherein the characteristic information of the data packet that needs to be redundantly transmitted comprises at least one of the following:

The network protocol IP address, media access control MAC address, port number of the terminal device and/or application server, the data flow identifier corresponding to the data packet, the session identifier, and the application identifier.
The method according to claim 35 or 36, wherein the time information for sending the copied data packet includes the time point and/or the duration of sending the copied data packet;

The time information for receiving the copied data packet includes the time point and/or the duration of time when the copied data packet is received.
The method according to any one of claims 34 to 37, wherein the terminal device receiving second indication information sent by a first access network node comprises:

The terminal device receives a handover command sent by the first access network node, where the handover command includes the second indication information.
The method according to any one of claims 34 to 38, wherein the method further comprises:

In the case that the time period for the terminal device to perform uplink redundant transmission exceeds the fourth time period, the terminal device stops sending the copied data packet to some or all of the at least one access network node;

In the case that the duration of the downlink redundant transmission by the terminal device exceeds the fifth duration, the terminal device stops receiving the copied data packet sent by some or all of the at least one access network node .
The method according to claim 39, wherein the fourth duration is pre-configured, or determined according to the second indication information; or the fifth duration is pre-configured, or according to the first 2. The instruction information is confirmed.
The method according to any one of claims 34 to 40, wherein the first core network node is a core network control plane node, and the second core network node is a core network user node.
The method according to any one of claims 34 to 40, wherein the first core network node and the second core network node are the same core network node, and the first core network node and the second core network node The second core network node is a core network user plane node or a core network control plane node.
A wireless communication method, characterized in that it comprises:

The first access network node sends the copied data packet to at least one second access network node.
The method of claim 43, wherein the method further comprises:

Receiving, by the first access network node, a downlink data packet sent by at least one second core network node and/or an uplink data packet sent by a terminal device;

Generating the copied data packet according to the downlink data packet and/or the uplink data packet.
The method according to claim 43 or 44, wherein the first access network node sending a copied data packet to at least one second access network node comprises:

The first access network node sends the copied data packet to the at least one second access network node when a specific condition is met.
The method of claim 45, wherein the specific condition includes at least one of the following:

The data packet is a specific service, the quality of service Qos parameter of the data packet is a specific Qos parameter, the protocol data unit PDU session corresponding to the data packet is a specific PDU session, and the data stream corresponding to the data packet is specific data Flow, an indication of the first core network node.
The method according to any one of claims 43 to 46, wherein the at least one second access network node is an access network node to be accessed by a terminal device, and the first access network node is The access network node currently accessed by the terminal device.
The method according to claim 44, wherein the second core network node is a core network user plane node.
A wireless communication method, characterized in that the method includes:

The first access network node sends a second message to the first core network node, and/or sends a third message to the terminal device,

Wherein, the second message is used to instruct the first core network node to stop at least one second core network node from sending copied data packets to at least one access network node and/or receiving the at least one access network node sending The third message is used to stop the terminal device from sending the copied data packet to the at least one access network node and/or receiving the copied data packet sent by the at least one access network node .
The method according to claim 49, wherein the first access network node sending a second message to the first core network node and/or sending a third message to a terminal device comprises:

After the terminal device performs the handover, the first access network node sends the second message to the first core network node and/or sends the third message to the terminal device.
The method according to claim 49 or 50, wherein the first access network node is the source access network node, and the first access network node sends a second message to the first core network node , And/or sending a third message to the terminal device, including:

After the first access network node receives the terminal device context release message, it sends the second message to the first core network node and/or sends the third message to the terminal device.
The method according to claim 49 or 50, wherein the first access network node is the target access network node, and the first access network node sends a second message to the first core network node , And/or sending a third message to the terminal device, including:

After receiving the handover complete message sent by the terminal device, the first access network node sends the second message to the first core network node and/or sends the third message to the terminal device.
The method according to claim 49, wherein the first access network node sending a second message to the first core network node and/or sending a third message to a terminal device comprises:

In a case where the duration of redundant transmission by the at least one second core network node exceeds the sixth duration, the first access network node sends the second message to the first core network node; and/or

In the case where the duration of redundant transmission by the terminal device exceeds the seventh duration, the third message is sent to the terminal device.
The method according to claim 53, wherein the sixth duration is pre-configured, or the sixth duration is the time information for sending or receiving the copied data packet in the first indication information, so The first indication information is sent by the first access network node to the first core network node; or

The seventh duration is pre-configured, or the seventh duration is the time information for sending or receiving the copied data packet in the second indication information, and the second indication information is the first access network Sent by the node to the terminal device.
The method according to any one of claims 49 to 54, wherein the second message comprises at least one of the following: stop sending the copied data packet or receive the second access network of the copied data packet Identification information of the node;

Stop the replication transmission of a specific data stream on a specific access network node;

Stop the copy transmission of uplink data and/or downlink data;

Time information to stop redundant transmission.
The method according to any one of claims 49 to 55, wherein the third message includes at least one of the following: stop sending the copied data packet or receive the second access network of the copied data packet Identification information of the node;

Stop the replication transmission of a specific data stream on a specific access network node;

Stop the copy transmission of uplink data and/or downlink data;

Time information to stop redundant transmission.
The method according to claim 55 or 56, wherein the time information for canceling redundant transmission comprises:

Cancel the time point and time length information of redundant transmission.
The method according to any one of claims 49 to 57, wherein the first core network node is a core network control plane node, and the second core network node is a core network user node.
A wireless communication device, characterized in that it comprises:

A communication module, configured to send first indication information to the first core network node, and/or send second indication information to the terminal device;

Wherein, the first indication information is used to trigger at least one second core network node to send a copied data packet to at least one terminal device through at least one access network node or to receive a data packet from at least one terminal device through the at least one access network node. Or, the first indication information is used to trigger at least one second core network node to send the copied data packet to at least one access network node or to receive the data packet sent by the at least one access network node The copied data package;

The second indication information is used to trigger the terminal device to send a copied data packet to at least one second core network node through at least one access network node or to receive data packets from at least one second core network node through at least one access network node. A replicated data packet sent by a node; or, the second indication information is used to trigger the terminal device to send a replicated data packet to at least one access network node or receive a replicated data packet sent by at least one access network node.
The device according to claim 59, wherein the first indication information comprises at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.
The device according to claim 59 or 60, wherein the second indication information comprises at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.
The device according to claim 60 or 61, wherein the characteristic information of the data packet requiring redundant transmission comprises at least one of the following:

The network protocol IP address, media access control MAC address, port number of the terminal device and/or application server, the data flow identifier corresponding to the data packet, the session identifier, and the application identifier.
The device according to any one of claims 60 to 62, wherein the time information for sending the copied data packet includes a time point and/or duration of sending the copied data packet;

The time information for receiving the copied data packet includes the time point and/or the duration of time when the copied data packet is received.
The device according to any one of claims 59 to 63, wherein the at least one access network node comprises at least one second access network node, and the communication module is specifically configured to:

After the device and the at least one second access network node perform handover preparation, send the first indication information to the first core network node, and/or send the second indication to the terminal device information.
The device according to any one of claims 59 to 63, wherein the at least one access network node comprises at least one second access network node, and the communication module is specifically configured to:

When the device performs handover preparation with the at least one second access network node, sending the first indication information to the first core network node, and/or sending the second indication to the terminal device information.
The device according to claim 65, wherein the communication module is further configured to:

Sending the first indication information to the first core network node through a handover request.
The device according to claim 65, wherein the communication module is further configured to:

Sending the first indication information to the first core network node through a session establishment request or a session update request.
The device according to any one of claims 65 to 67, wherein the communication module is further configured to:

Sending the second indication information to the terminal device through a switching command.
The device according to any one of claims 59 to 63, wherein the at least one access network node comprises at least one second access network node, and the communication module is further configured to:

Before the device and the at least one second access network node perform handover preparation, send the first indication information to the first core network node, and/or send the second indication to the terminal device information.
The device according to any one of claims 64 to 69, wherein the at least one second access network node is an access network node to be accessed by a terminal device, and the device is a current terminal device The connected access network node.
The device according to any one of claims 59 to 70, wherein the first core network node is a core network control plane node, and the second core network node is a core network user node.
The device according to any one of claims 59 to 70, wherein the first core network node and the second core network node are the same core network node, and the first core network node and the second core network node The second core network node is a core network user plane node or a core network control plane node.
A wireless communication device, characterized in that it comprises:

A communication module, configured to receive first indication information sent by a first access network node, where the first indication information is used to instruct the device to trigger at least one second core network node to send copied data to at least one access network node Packet or receiving the copied data packet sent by the at least one access network node, or the first indication information is used to instruct the device to trigger at least one second core network node to send at least one The terminal device sends a copied data packet or receives a copied data packet from at least one terminal device sent through the at least one access network node; and

Send a first message to the at least one second core network node, where the first message is used to trigger the at least one second core network node to send a copied data packet to the at least one access network node or to receive the A copied data packet sent by at least one access network node, or the first message is used to trigger the at least one second core network node to send or receive a copied data packet to at least one terminal device through at least one access network node A replicated data packet from at least one terminal device sent through the at least one access network node.
The device according to claim 73, wherein the first message includes the first indication information, and the first indication information includes at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the terminal device.
The device according to claim 74, wherein the characteristic information of the data packet requiring redundant transmission comprises at least one of the following:

The network protocol IP address, media access control MAC address, port number of the terminal device and/or application server, the data flow identifier corresponding to the data packet, the session identifier, and the application identifier.
The device according to claim 74 or 75, wherein the time information for sending the copied data packet includes the time point and/or duration of sending the copied data packet;

The time information for receiving the copied data packet includes the time point and/or the duration of time when the copied data packet is received.
The device according to any one of claims 73 to 76, wherein the at least one access network node comprises at least one second access network node, and the communication module is specifically configured to:

After the first access network node and the at least one second access network node perform handover preparation, receive the first indication information sent by the first access network node.
The device according to any one of claims 73 to 76, wherein the at least one access network node comprises at least one second access network node, and the communication module is specifically configured to:

When the first access network node and the at least one second access network node perform handover preparation, receiving the first indication information sent by the first access network node.
The device according to claim 78, wherein the communication module is specifically configured to: receive a handover request sent by the first access network node, and the handover request includes the first indication information.
The device according to claim 78, wherein the communication module is further configured to:

Sending a session modification message to the at least one second core network node, where the session modification message includes the first indication information.
The device according to claim 78, wherein the communication module is specifically configured to: receive a session establishment request or a session update request sent by the first access network node, the session establishment request or the session update request The request includes the first indication information.
The device according to claim 81, wherein the communication module is further configured to:

Sending a session establishment request or a session update request to the at least one second core network node, where the session establishment request or the session update request includes the first indication information.
The device according to any one of claims 73 to 76, wherein the at least one access network node comprises at least one second access network node, and the communication module is specifically configured to:

Before the first access network node and the at least one second access network node perform handover preparation, receive the first indication information sent by the first access network node.
The device according to any one of claims 73 to 83, wherein the at least one second access network node is an access network node to be accessed by a terminal device, and the first access network node is The access network node currently accessed by the terminal device.
The device according to any one of claims 73 to 84, wherein the device further comprises:

The determining module is used to select at least one of the auxiliary information S-NSSAI, the external network service node DNN, the user's subscription information and the user policy according to the data stream or the single network slice of the session corresponding to the data packet. The at least one second core network node that performs redundant transmission is determined among the two core network nodes.
The device according to any one of claims 73 to 85, characterized in that, in the case that the duration of the at least one second core network node performing downlink redundant transmission exceeds the first duration, the at least one second core network node The second core network node stops sending replicated data packets to some or all of the at least one access network node; or, the duration of uplink redundant transmission on the at least one second core network node exceeds In the case of the second duration, the at least one second core network node stops receiving the duplicated data packets sent by some or all of the access network nodes in the at least one access network node.
The device according to claim 86, wherein the first duration is pre-configured or obtained from the device; and the second duration is pre-configured or obtained from the device.
The device according to any one of claims 73 to 87, wherein the communication module is further configured to:

In the case that the time period for the at least one second core network node to perform redundant transmission exceeds the third time period, a fourth message is sent to the at least one second core network node, where the fourth message is used to indicate The at least one second core network node stops sending replicated data packets to some or all of the at least one access network node, or stops receiving some or all of the at least one access network node A copied data packet sent by an access network node.
The device according to claim 88, wherein the third duration is pre-configured or determined according to the first indication information.
The device according to any one of claims 73 to 89, wherein the device is a core network user plane node, and the second core network node is a core network user plane node.
The device according to any one of claims 73 to 89, wherein the device and the second core network node are the same core network node, and the device and the second core network node are core Network user plane node or core network control plane node.
A wireless communication device, characterized in that it comprises:

A communication module, configured to receive second indication information sent by a first access network node, where the second indication information is used to trigger the device to send copied data to at least one second core network node through at least one access network node Packet or receiving a copied data packet from at least one second core network node sent through the at least one access network node; or, the second indication information is used to trigger the device to send to at least one access network node Replicated data packets or received replicated data packets sent by at least one access network node.
The device according to claim 92, wherein the second indication information comprises at least one of the following:

Perform redundant transmission instructions, send an instruction to replicate data packets to the at least one access network node, and receive an instruction to replicate data packets sent by the at least one access network node, the at least one access network node The identification information of the at least one access network node and the at least one second core network node, the characteristic information of the data packet that needs to be redundantly transmitted, the time information of sending the copied data packet, and receiving The time information of the copied data packet is an instruction for redundant transmission between the core network and the access network, and an instruction for redundant transmission between the access network and the device.
The device according to claim 93, wherein the characteristic information of the data packet that requires redundant transmission includes at least one of the following: network protocol IP address of the device and/or application server, media access control MAC address, port number, data flow identifier corresponding to the data packet, session identifier, and application identifier.
The device according to claim 93 or 94, wherein the time information for sending the copied data packet includes the time point and/or duration of sending the copied data packet;

The time information for receiving the copied data packet includes the time point and/or the duration of time when the copied data packet is received.
The device according to any one of claims 92 to 95, wherein the communication module is specifically configured to:

Receiving a handover command sent by the first access network node, where the handover command includes the second indication information.
The device according to any one of claims 92 to 96, wherein the communication module is further configured to:

In a case where the time period for the device to perform uplink redundant transmission exceeds the fourth time period, stop sending the duplicated data packet to some or all of the at least one access network node;

When the duration of the downlink redundant transmission by the device exceeds the fifth duration, stop receiving the duplicated data packets sent by some or all of the at least one access network node.
The device according to claim 97, wherein the fourth duration is pre-configured, or determined according to the second indication information; or the fifth duration is pre-configured, or according to the first 2. The instruction information is confirmed.
The device according to any one of claims 92 to 98, wherein the first core network node is a core network control plane node, and the second core network node is a core network user node.
The device according to any one of claims 92 to 98, wherein the first core network node and the second core network node are the same core network node, and the first core network node and the second core network node The second core network node is a core network user plane node or a core network control plane node.
A wireless communication device, characterized in that it comprises:

The communication module is configured to send the copied data packet to at least one second access network node.
The device according to claim 101, wherein the communication module is further configured to:

Receiving a downlink data packet sent by at least one second core network node and/or an uplink data packet sent by a terminal device;

Generating the copied data packet according to the downlink data packet and/or the uplink data packet.
The device according to claim 101 or 102, wherein the communication module is specifically configured to:

When a specific condition is met, sending the copied data packet to the at least one second access network node.
The device according to claim 103, wherein the specific condition includes at least one of the following:

The data packet is a specific service, the quality of service Qos parameter of the data packet is a specific Qos parameter, the protocol data unit PDU session corresponding to the data packet is a specific PDU session, and the data stream corresponding to the data packet is specific data Flow, an indication of the first core network node.
The device according to any one of claims 101 to 104, wherein the at least one second access network node is an access network node to be accessed by a terminal device, and the device is a current terminal device The connected access network node.
The device according to claim 102, wherein the second core network node is a core network user plane node.
A wireless communication device, characterized in that it comprises:

The communication module is used to send a second message to the first core network node and/or send a third message to the terminal device,

Wherein, the second message is used to instruct the first core network node to stop at least one second core network node from sending copied data packets to at least one access network node and/or receiving the at least one access network node sending The third message is used to stop the terminal device from sending the copied data packet to the at least one access network node and/or receiving the copied data packet sent by the at least one access network node .
The device according to claim 107, wherein the communication module is specifically configured to:

After the terminal device performs the handover, sending the second message to the first core network node and/or sending the third message to the terminal device.
The device according to claim 107 or 108, wherein the device is the source access network node, and the communication module is specifically configured to:

After receiving the terminal device context release message, send the second message to the first core network node and/or send the third message to the terminal device.
The device according to claim 107 or 108, wherein the device is the target access network node, and the communication module is specifically configured to:

After receiving the handover complete message sent by the terminal device, sending the second message to the first core network node and/or sending the third message to the terminal device.
The device according to claim 107, wherein the communication module is specifically configured to:

In the case where the time period for the at least one second core network node to perform redundant transmission exceeds the sixth time period, send the second message to the first core network node; and/or perform redundancy on the terminal device If the transmission duration exceeds the seventh duration, the third message is sent to the terminal device.
The device according to claim 111, wherein the sixth duration is pre-configured, or the sixth duration is the time information for sending or receiving the copied data packet in the first indication information, so The first indication information is sent by the device to the first core network node; or

The seventh duration is pre-configured, or the seventh duration is the time information for sending or receiving the copied data packet in the second indication information, and the second indication information is sent by the device to the Terminal equipment.
The device according to any one of claims 107 to 112, wherein the second message comprises at least one of the following: stop sending the copied data packet or receive the second access network of the copied data packet Identification information of the node;

Stop the replication transmission of a specific data stream on a specific access network node;

Stop the copy transmission of uplink data and/or downlink data;

Time information to stop redundant transmission.
The device according to any one of claims 107 to 113, wherein the third message comprises at least one of the following: stop sending the copied data packet or receive the second access network of the copied data packet Identification information of the node;

Stop the replication transmission of a specific data stream on a specific access network node;

Stop the copy transmission of uplink data and/or downlink data;

Time information to stop redundant transmission.
The device according to claim 113 or 114, wherein the time information for canceling redundant transmission comprises:

Cancel the time point and time length information of redundant transmission.
The device according to any one of claims 107 to 115, wherein the first core network node is a core network control plane node, and the second core network node is a core network user node.
A wireless communication 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 claims 1 to 14 The method according to any one of claims 15 to 33, or the method according to any one of claims 34 to 42, or any one of claims 43 to 48 The method of one, or the method of any one of 58 of claims 49.
A chip, characterized by comprising: a processor, used 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 14, or The method according to any one of claims 15 to 33, or the method according to any one of claims 34 to 42, or the method according to any one of claims 43 to 48, or as claimed The method of any one of 49 of 58.
A computer-readable storage medium, characterized in that it is used to store a computer program that causes a computer to execute the method according to any one of claims 1 to 14, or any one of claims 15 to 33 The method according to item, or the method according to any one of claims 34 to 42, or the method according to any one of claims 43 to 48, or the method according to any one of claims 49 to 58 The method described.
A computer program product, characterized by comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 14, or the method according to any one of claims 15 to 33 The method of, or the method of any one of claims 34 to 42, or the method of any one of claims 43 to 48, or the method of any one of claims 49 to 58 .
A computer program, characterized in that it causes a computer to execute the method according to any one of claims 1 to 14, or the method according to any one of claims 15 to 33, or The method according to any one of claims 34 to 42, or the method according to any one of claims 43 to 48, or the method according to any one of claims 49 to 58.