WO2020082327A1

WO2020082327A1 - Method and apparatus for signaling interaction during switching process, and network device

Info

Publication number: WO2020082327A1
Application number: PCT/CN2018/112075
Authority: WO
Inventors: 尤心; 卢前溪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2020-04-30
Also published as: CN111972001A

Abstract

Embodiments of the present application provide a method and apparatus for the signaling interaction during a switching process, and a network device. The method comprises: a first base station sends a switching request message to a second base station, the switching request message carrying first indication information, and the first indication information being used for indicating a switching type.

Description

Method and device for signaling interaction in switching process, and network equipment

Technical field

The embodiments of the present application relate to the technical field of mobile communications, and in particular, to a signaling interaction method and apparatus and network equipment in a handover process.

Background technique

Mobility enhancement for reducing the switching delay mainly includes two methods, one is based on dual connectivity (DC, Dual Connectivity) switching, and the other is based on enhanced mobile broadband (eMBB, Enhance Mobile Broadband) switching. Among them, the DC-based handover is mainly by adding the target base station as a secondary node (SN, Secondary), and then changing the SN to the master node (MN, Master) by role change, so as to achieve the effect of handover . The handover based on eMBB refers to the connection with the source base station while connecting with the target base station, so as to achieve an uninterrupted handover.

For DC-based handover, how to perform signaling interaction between base stations is a clear question.

Summary of the invention

Embodiments of the present application provide a signaling interaction method and apparatus, and network equipment in a handover process.

The signaling interaction method in the handover process provided by the embodiment of the present application includes:

The first base station sends a handover request message to the second base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

The second base station receives a handover request message sent by the first base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

The signaling interaction apparatus in the handover process provided by the embodiment of the present application is applied to the first base station, and the apparatus includes:

The sending unit is configured to send a handover request message to the second base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

The signaling interaction apparatus in the handover process provided by the embodiment of the present application is applied to the second base station, and the apparatus includes:

The receiving unit is configured to receive a handover request message sent by the first base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

The network device provided by the embodiment of the present application includes 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 perform the signaling interaction method in the above switching process.

The chip provided in the embodiment of the present application is used to implement the foregoing signaling interaction method in the handover process.

Specifically, the chip includes a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the signaling interaction method in the above switching process.

The computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables the computer to execute the signaling interaction method in the above switching process.

The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause the computer to execute the signaling interaction method in the above switching process.

The computer program provided by the embodiment of the present application, when it runs on a computer, causes the computer to perform the signaling interaction method in the above switching process.

Through the above technical solution, during the DC-based handover process, it is clear how the base station performs signaling interaction, so that the DC-based handover process can be smoothly implemented.

BRIEF DESCRIPTION

The drawings described here are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an undue limitation on the present application. In the drawings:

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

2 is a first schematic flowchart of a signaling interaction method in a handover process provided by an embodiment of this application;

3 is a second schematic flowchart of a signaling interaction method in a handover process provided by an embodiment of this application;

4 is a schematic flowchart 3 of a signaling interaction method in a handover process provided by an embodiment of this application;

FIG. 5 is a schematic structural diagram 1 of a signaling interaction device during a handover process provided by an embodiment of this application; FIG.

6 is a second schematic structural diagram of a signaling interaction device during a handover process provided by an embodiment of this application;

7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

8 is a schematic structural diagram of a chip according to an embodiment of the present application;

9 is a schematic block diagram of a communication system provided by 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, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of this application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile (GSM) system, Code Division Multiple Access (CDMA) system, and Broadband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Global 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 a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminals located within the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the cloud radio access network (Cloud Radio Access Network, CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.

The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110. As used herein, "terminals" include, but are not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (DSL), digital cables, and direct cable connections; And / or another data connection / network; and / or via a wireless interface, eg, for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) equipment. A terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; can include radiotelephones, pagers, Internet / internal PDA with networked access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device. Terminal can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user Device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in future evolved PLMNs, etc.

Optionally, terminal 120 may perform terminal direct connection (Device to Device, D2D) communication.

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

FIG. 1 exemplarily shows one network device and two terminals. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within the coverage area. Embodiments of the present application There is no restriction on this.

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

It should be understood that the devices with communication functions in the network / system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication The device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" in this article is just an association relationship that describes an associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, exist alone B these three cases. In addition, the character “/” in this article generally indicates that the related objects before and after are in an “or” relationship.

FIG. 2 is a schematic flowchart 1 of a signaling interaction method in a handover process provided by an embodiment of the present application. As shown in FIG. 2, the signaling interaction method in the handover process includes the following steps:

Step 201: The first base station sends a handover request message to the second base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

In the embodiment of the present application, the first base station refers to the source base station in the handover process, and the second base station refers to the target base station in the handover process. The types of the first base station and the second base station may be the same or different. For example, the first base station is an LTE base station (ie eNB), and the second base station is an NR base station (ie gNB). For another example: both the first base station and the second base station are LTE base stations (ie, eNB) or both are NR base stations (ie, gNB).

In the embodiment of the present application, in the DC architecture, the first base station refers to the source master node, and the second base station refers to the target master node.

Based on this, the first base station sending a handover request message to the second base station specifically means that the source master node sends a handover request message to the target master node.

In the embodiment of the present application, the handover request message carries first indication information, and the first indication information is used to indicate a handover type. Here, the handover type is used to indicate that the handover process is a DC-based handover process. The switching type can be achieved in the following ways:

1) The handover type includes: making the source primary node a target secondary node; or,

2) The handover type includes: making the source secondary node the target primary node.

For the above 1), further, the handover request message also carries second indication information, which is used to indicate that the source master node agrees to become the target secondary node, and to request the source master node from the second base station Become the target secondary node.

For the above 2), further, the handover request message also carries second indication information, which is used to indicate that the source secondary node agrees to become the target master node, and requests the source secondary node from the second base station Become the target master node.

In the above solution, the source secondary node and the target master node may be the same base station; or, the source secondary node and the target master node are different base stations.

In the embodiment of the present application, after the first base station sends a handover request message to the second base station, the first base station receives the handover request feedback message sent by the second base station, and the handover request feedback message is used to indicate that the handover is approved Request or reject the switch request. among them:

1) If the handover request feedback message indicates approval of the handover request, the handover request feedback message includes a radio resource control (RRC, Radio Resource Control) reconfiguration message of the second base station.

Further, if the handover request feedback message indicates approval of the handover request, the first base station sends a handover command to the terminal, and the handover command includes an RRC reconfiguration message of the second base station.

For example, after the source base station sends a handover request message to the target base station, the target base station sends a handover request feedback message to the source base station. The handover request feedback message indicates that the handover request is approved, and the handover request feedback message includes the RRC reconfiguration of the target base station. Message, the source base station sends a handover command to the terminal, and at the same time carries the RRC reconfiguration message of the target base station in the handover command, so that the terminal performs RRC reconfiguration of the target base station, and then, the terminal sends an RRC reconfiguration complete message to the target base station.

2) If the handover request feedback message indicates that the handover request is rejected, the first base station falls back to the normal handover process.

For example, after the source base station sends a handover request message to the target base station, the target base station sends a handover request feedback message to the source base station. The handover request feedback message indicates that the handover request is rejected. Process), and re-initiate the handover request.

FIG. 3 is a second schematic flowchart of a signaling interaction method in a handover process provided by an embodiment of the present application. As shown in FIG. 3, the signaling interaction method in the handover process includes the following steps:

Step 301: The second base station receives a handover request message sent by the first base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

Based on this, the second base station receiving the handover request message sent by the first base station specifically means that the target master node receives the handover request message sent by the source master node.

In the embodiment of the present application, after the second base station receives the handover request message sent by the first base station, the second base station sends a handover request feedback message to the first base station, and the handover request feedback message is used to indicate that the handover is approved Request or reject the switch request. among them:

1) If the handover request feedback message indicates approval of the handover request, the handover request feedback message includes the RRC reconfiguration message of the second base station.

For example, after the source base station sends a handover request message to the target base station, the target base station sends a handover request feedback message to the source base station. The handover request feedback message indicates that the handover request is rejected, and the source base station falls back to the normal handover process (that is, not based on DC handover Process), and re-initiate the handover request.

4 is a schematic flowchart 3 of a signaling interaction method in a handover process provided by an embodiment of the present application. As shown in FIG. 4, the source master node (source MN) is SeNB1, the source secondary node (source SN) is SeNB2, and the target master The node (target MN) is TeNB1, and the target secondary node (target SN) is TeNB2. It should be noted that the base station in FIG. 4 is described by taking the LTE base station as an example, which is not limited to this, and the NR base station is also applicable to this application. In the technical solution of the embodiment, the signaling interaction method in the handover process includes the following steps:

Step 401: The source MN sends a secondary node addition request message to the source SN.

Step 402: The source SN sends a secondary node addition request confirmation feedback message to the source MN.

Step 403: The source MN sends a handover request message to the target MN.

Step 404: The target MN sends a secondary node addition request message to the target SN.

Step 405: The target SN sends a secondary node addition request confirmation feedback message to the target MN.

Step 406: The target MN sends a handover request confirmation message to the source MN.

Step 407: The source MN sends a secondary node release request message to the source SN.

Step 408: The source MN sends an RRC reconfiguration message to the UE.

Step 409: A random access procedure is performed between the UE and the target MN.

Step 410: The UE sends an RRC reconfiguration complete message to the target MN.

Step 411: Perform a random access procedure between the UE and the target SN.

Step 412: The target MN sends a secondary node reconfiguration complete message to the target SN.

Step 413: The service network manager (S-GW) forwards the data to the source MN, and the source MN forwards the data to the target MN.

Step 414: The source SN forwards the data to the target SN.

Step 415: The target MN sends a path change request message to the mobility management entity (MME).

Step 416: Perform bearer modification between the S-GW and the MME.

Step 417a: The S-GW allocates a new path to the target MN.

Step 417b: The S-GW allocates a new path to the target SN.

Step 418: The MME sends a path change request confirmation message to the target MN.

Step 419: The target MN notifies the source MN to release the UE context.

Step 420: The source MN notifies the source SN to release the UE context.

Step 421: The target MN sends a secondary node release request message to the target SN.

Step 422: The target SN sends a secondary node release request confirmation feedback message to the target MN.

FIG. 5 is a schematic structural diagram 1 of a signaling interaction device during a handover process provided by an embodiment of this application, and is applied to a first base station. As shown in FIG. 5, the device includes:

The sending unit 501 is configured to send a handover request message to a second base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

In one embodiment, the handover type includes: making the source master node a target slave node.

In one embodiment, the handover request message also carries second indication information, which is used to indicate that the source master node agrees to become the target secondary node, and requests the second base station that the source master node becomes Target secondary node.

In one embodiment, the handover type includes: making the source secondary node the target primary node.

In one embodiment, the source secondary node and the target primary node are the same base station; or,

The source secondary node and the target primary node are different base stations.

In one embodiment, the first base station is the source master node;

The sending unit 501 is configured to send a handover request message to the target master node.

In an embodiment, the device further includes:

The receiving unit 502 is configured to receive a handover request feedback message sent by the second base station, where the handover request feedback message is used to indicate approval of the handover request or rejection of the handover request.

In an embodiment, if the handover request feedback message indicates approval of the handover request, the handover request feedback message includes the RRC reconfiguration message of the second base station.

In an embodiment, if the handover request feedback message indicates that the handover request is approved, the sending unit is further configured to send a handover command to the terminal, where the handover command includes the RRC reconfiguration message of the second base station.

In an embodiment, the device further includes:

The fallback unit 503 is configured to fall back to the normal handover process if the handover request feedback message indicates that the handover request is rejected.

Those skilled in the art should understand that the relevant description of the signaling interaction apparatus in the above handover process in the embodiments of the present application can be understood with reference to the relevant description of the signaling interaction method in the handover process in the embodiments of the present application.

FIG. 6 is a second structural composition diagram of a signaling interaction device during a handover process provided by an embodiment of this application, and is applied to a second base station. As shown in FIG. 6, the device includes:

The receiving unit 601 is configured to receive a handover request message sent by a first base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.

In one embodiment, the second base station is the target master node;

The receiving unit 601 is configured to receive a handover request message sent by the source master node.

In an embodiment, the device further includes:

The sending unit 602 is configured to send a handover request feedback message to the first base station, where the handover request feedback message is used to indicate approval of the handover request or rejection of the handover request.

7 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device may be a network device, such as a base station. The communication device 600 shown in FIG. 7 includes a processor 610. The processor 610 may call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 7, the communication device 600 may further include a memory 620. The processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, as shown in FIG. 7, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a network device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. .

Optionally, the communication device 600 may specifically be the mobile terminal / terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiment of the present application. This will not be repeated here.

8 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 8 includes a processor 710, and the processor 710 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. 8, the chip 700 may further include a memory 720. The processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application.

The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.

Optionally, the chip can be applied to the mobile terminal / terminal in the embodiments of the present application, and the chip can implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application. Repeat.

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

9 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 9, the communication system 900 includes a terminal 910 and a network device 920.

Wherein, the terminal 910 may be used to implement the corresponding functions implemented by the terminal in the above method, and the network device 920 may be used to implement the corresponding functions implemented by the network device in the above method.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has signal processing capabilities. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a 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 (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available 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 may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and a register. 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), electronic Erasable 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 example but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (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 limiting. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data) 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) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiments 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 embodiments of the present application. No longer.

Optionally, the computer-readable storage medium may be applied to the mobile terminal / terminal in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal in each method of the embodiments of the present application, in order to It is concise and will not be repeated here.

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

Optionally, the computer program product can be applied to the network device in the embodiments 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. Repeat again.

Optionally, the computer program product can be applied to the mobile terminal / terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application, for simplicity And will not be repeated 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 embodiments of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. And will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal / terminal in the embodiments of the present application, and when the computer program runs on the computer, the computer is allowed to execute the corresponding implementation of the mobile terminal / terminal in each method of the embodiments of the present application For the sake of brevity, I will not repeat them here.

Those of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction 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 in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, 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 the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, 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 schematic. For example, the division of the units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be combined or 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 may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit 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 are 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 may be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or 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 enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments 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 is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A signaling interaction method in a handover process, the method includes:

The first base station sends a handover request message to the second base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.
The method of claim 1, wherein the handover type comprises: making the source master node a target slave node.
The method according to claim 1 or 2, wherein the handover request message further carries second indication information, the second indication information is used to indicate that the source master node agrees to become the target secondary node, and to the second base station Request the source master node to become the target slave node.
The method of claim 1, wherein the handover type comprises: making the source secondary node the target master node.
The method according to claim 4, wherein

The source secondary node and the target primary node are the same base station; or,

The source secondary node and the target primary node are different base stations.
The method according to any one of claims 1 to 5, wherein the first base station sending a handover request message to the second base station includes:

The source master node sends a handover request message to the target master node.
The method according to any one of claims 1 to 6, wherein the method further comprises:

The first base station receives a handover request feedback message sent by the second base station, where the handover request feedback message is used to indicate approval of the handover request or rejection of the handover request.
The method of claim 7, wherein, if the handover request feedback message indicates approval of the handover request, the handover request feedback message includes a radio resource control RRC reconfiguration message of the second base station.
The method according to claim 8, wherein if the handover request feedback message indicates approval of the handover request, the first base station sends a handover command to the terminal, the handover command including an RRC reconfiguration message of the second base station .
The method of claim 7, wherein if the handover request feedback message indicates that the handover request is rejected, the first base station falls back to the normal handover procedure.
A signaling interaction method in a handover process, the method includes:

The second base station receives a handover request message sent by the first base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.
The method according to claim 11, wherein the switching type comprises: making the source master node a target slave node.
The method according to claim 11 or 12, wherein the handover request message further carries second indication information, the second indication information is used to indicate that the source master node agrees to become the target secondary node, and to the second base station Request the source master node to become the target slave node.
The method according to claim 11, wherein the handover type comprises: making the source secondary node a target master node.
The method according to claim 14, wherein

The source secondary node and the target primary node are the same base station; or,

The source secondary node and the target primary node are different base stations.
The method according to any one of claims 11 to 15, wherein the second base station receiving the handover request message sent by the first base station includes:

The target master node receives the handover request message sent by the source master node.
The method according to any one of claims 11 to 16, wherein the method further comprises:

The second base station sends a handover request feedback message to the first base station, where the handover request feedback message is used to indicate approval of the handover request or rejection of the handover request.
The method of claim 17, wherein, if the handover request feedback message indicates approval of the handover request, the handover request feedback message includes an RRC reconfiguration message of the second base station.
A signaling interaction device during a handover process is applied to a first base station. The device includes:

The sending unit is configured to send a handover request message to the second base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.
The apparatus of claim 19, wherein the handover type comprises: making the source master node a target slave node.
The apparatus according to claim 19 or 20, wherein the handover request message further carries second indication information, the second indication information is used to indicate that the source master node agrees to become the target secondary node, and to the second base station Request the source master node to become the target slave node.
The apparatus of claim 19, wherein the handover type comprises: making the source secondary node the target master node.
The device according to claim 22, wherein

The source secondary node and the target primary node are the same base station; or,

The source secondary node and the target primary node are different base stations.
The apparatus according to any one of claims 19 to 23, wherein the first base station is a source master node;

The sending unit is configured to send a handover request message to the target master node.
The device according to any one of claims 19 to 24, wherein the device further comprises:

The receiving unit is configured to receive a handover request feedback message sent by the second base station, where the handover request feedback message is used to indicate approval of the handover request or rejection of the handover request.
The apparatus of claim 25, wherein, if the handover request feedback message indicates approval of the handover request, the handover request feedback message includes an RRC reconfiguration message of the second base station.
The apparatus according to claim 26, wherein if the handover request feedback message indicates that the handover request is approved, the sending unit is further configured to send a handover command to a terminal, the handover command including the RRC of the second base station Reconfiguration message.
The device of claim 27, wherein the device further comprises:

The fallback unit is configured to fall back to the normal handover process if the handover request feedback message indicates that the handover request is rejected.
A signaling interaction device during a handover process is applied to a second base station. The device includes:

The receiving unit is configured to receive a handover request message sent by the first base station, where the handover request message carries first indication information, and the first indication information is used to indicate the type of handover.
The apparatus of claim 29, wherein the handover type comprises: making the source master node a target slave node.
The apparatus according to claim 29 or 30, wherein the handover request message further carries second indication information, the second indication information is used to indicate that the source master node agrees to become the target secondary node, and to the second base station Request the source master node to become the target slave node.
The apparatus of claim 29, wherein the handover type comprises: making the source secondary node the target master node.
The device according to claim 32, wherein

The source secondary node and the target primary node are the same base station; or,

The source secondary node and the target primary node are different base stations.
The apparatus according to any one of claims 29 to 33, wherein the second base station is a target master node;

The receiving unit is configured to receive a handover request message sent by the source master node.
The device according to any one of claims 29 to 34, wherein the device further comprises:

The sending unit is configured to send a handover request feedback message to the first base station, where the handover request feedback message is used to indicate approval of the handover request or rejection of the handover request.
The apparatus of claim 35, wherein, if the handover request feedback message indicates approval of the handover request, the handover request feedback message includes an RRC reconfiguration message of the second base station.
A network device, including: 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 executes any one of claims 1 to 10 Method, or the method of any one of claims 11 to 18.
A chip, including: a processor, for calling and running a computer program from a memory, so that a device mounted with the chip performs the method according to any one of claims 1 to 10, or claims 11 to 18 The method as described in any one.
A computer-readable storage medium for storing a computer program that causes a computer to perform the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 18 .
A computer program product comprising computer program instructions which causes a computer to perform the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 18.
A computer program that causes a computer to execute the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 18.