WO2023010355A1

WO2023010355A1 - Mobility control method and apparatus, and network device and terminal

Info

Publication number: WO2023010355A1
Application number: PCT/CN2021/110653
Authority: WO
Inventors: 邢金强
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2023-02-09
Also published as: CN117413589A

Abstract

Provided in the embodiments of the present application are a mobility control method and apparatus, and a network device and a terminal. The method comprises: a first base station receiving a first request message, wherein the first request message is used for making a request for the first base station to change a terminal combination, which is used for joint transmission; and the first base station changing the terminal combination on the basis of the first request message.

Description

A mobility control method and device, network equipment, and terminal

technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a mobility control method and device, network equipment, and terminal.

Background technique

The terminals in a cell are not related to each other, and each terminal performs its own data transmission independently. However, due to the large number of terminals in the cell, the transmission resources that can be allocated to a single terminal are very limited, which limits the improvement of the data transmission rate of the terminal. Therefore, how to further optimize the data transmission of the terminal is a problem to be solved.

Contents of the invention

Embodiments of the present application provide a mobility control method and device, a network device, a terminal, a chip, a computer-readable storage medium, a computer program product, and a computer program.

The mobility control method provided in the embodiment of this application includes:

The first base station receives a first request message, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission;

The first base station changes the terminal combination based on the first request message.

The first base station receives the handover request message sent by the first terminal;

The first base station sends information about a terminal combination associated with the first terminal to a second base station; the terminal combination is used for joint transmission.

The first terminal sends a first request message to the first base station, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission.

The mobility control device provided in the embodiment of the present application is applied to the first base station, and the device includes:

A receiving unit, configured to receive a first request message, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission;

A changing unit, configured to change the terminal combination based on the first request message.

a receiving unit, configured to receive a handover request message sent by the first terminal;

A sending unit, configured to send information about a terminal combination associated with the first terminal to a second base station; the terminal combination is used for joint transmission.

The mobility control device provided in the embodiment of the present application is applied to the first terminal, and the device includes:

A sending unit, configured to send a first request message to the first base station, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission.

The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used for storing computer programs, and the processor is used for invoking and running the computer programs stored in the memory to execute the above mobility control method.

The terminal provided in the embodiment of the present application includes a processor and a memory. The memory is used for storing computer programs, and the processor is used for invoking and running the computer programs stored in the memory to execute the above mobility control method.

The chip provided in the embodiment of the present application is used to implement the above mobility control method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned mobility control method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program causes a computer to execute the above mobility control method.

The computer program product provided by the embodiments of the present application includes computer program instructions, where the computer program instructions cause a computer to execute the above-mentioned mobility control method.

The computer program provided by the embodiment of the present application, when running on a computer, enables the computer to execute the above mobility control method.

In the above technical solutions of the embodiments of the present application, the joint transmission of multiple terminals can be realized by means of terminal combination, thereby improving the transmission efficiency. In addition, when a terminal in the terminal combination moves, the terminal combination can be changed, thereby realizing the mobility control of the terminal combination.

Description of drawings

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

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

FIG. 2 is a schematic diagram of a multi-terminal working scenario in a cell provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of multi-terminal joint transmission provided by an embodiment of the present application;

FIG. 4 is a first schematic flow diagram of a mobility control method provided by an embodiment of the present application;

FIG. 5 is a second schematic flow diagram of a mobility control method provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of the mobility of a combination of terminals in a cell provided by an embodiment of the present application;

FIG. 7 is a third schematic flowchart of a mobility control method provided in an embodiment of the present application;

FIG. 8 is a fourth schematic flowchart of a mobility control method provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a master terminal entering another cell in a terminal combination provided by an embodiment of the present application;

FIG. 10 is a schematic flow diagram V of a mobility control method provided in an embodiment of the present application;

FIG. 11 is a schematic diagram of partial terminal combination switching provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of a secondary terminal entering another cell in a terminal combination provided by an embodiment of the present application;

FIG. 13 is a sixth schematic flow diagram of a mobility control method provided by an embodiment of the present application;

FIG. 14 is a first schematic diagram of multi-base station joint transmission provided by an embodiment of the present application;

FIG. 15 is a second schematic diagram of multi-base station joint transmission provided by an embodiment of the present application;

FIG. 16 is a schematic flow diagram VII of a mobility control method provided by an embodiment of the present application;

Fig. 17 is a first structural diagram of the mobility control device provided by the embodiment of the present application;

Fig. 18 is a second structural diagram of the mobility control device provided by the embodiment of the present application;

Fig. 19 is a schematic diagram of the third structural composition of the mobility control device provided by the embodiment of the present application;

FIG. 20 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 21 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 22 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a terminal 110 and a network device 120 . The network device 120 can communicate with the terminal 110 through an air interface. Multi-service transmission is supported between the terminal 110 and the network device 120 .

It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal 110 . The access network device can provide communication coverage for a specific geographic area, and can communicate with terminals 110 (such as UEs) located in the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a Next Generation Radio Access Network (NG RAN) device, Either a base station (gNB) in the NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal 110 may be any terminal, including but not limited to a terminal connected to the network device 120 or other terminals by wire or wirelessly.

For example, the terminal 110 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device , User Agent, or User Device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminals in 5G networks or terminals in future evolution networks, etc.

The terminal 110 can be used for device-to-device (Device to Device, D2D) communication.

The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, Access and Mobility Management Function (Access and Mobility Management Function , AMF), and for example, authentication server function (Authentication Server Function, AUSF), and for example, user plane function (User Plane Function, UPF), and for example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal establishes an air interface connection with the access network device through the NR interface to transmit user plane data and control plane signaling; the terminal can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access network device For example, a next-generation wireless access base station (gNB) can establish a user plane data connection with UPF through NG interface 3 (N3 for short); an access network device can establish a control plane signaling connection with AMF through NG interface 2 (N2 for short); UPF can establish control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with data network through NG interface 6 (abbreviated as N6); AMF can establish with SMF through NG interface 11 (abbreviated as N11) Control plane signaling connection: the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

FIG. 1 exemplarily shows a base station, a core network device, and two terminals. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. This embodiment of the present application does not limit it.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used to indicate related information, and this application does not limit its specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

About the data transmission of the terminal in the cell

Usually, as shown in Figure 2, there will be multiple terminals working at the same time in a cell, and the network configures each terminal individually. Different terminals occupy different time-frequency resources, and the terminals each Complete data transfer, there is no correlation between each other.

For each terminal, usually it has limited transmission or reception links. For example, a general terminal has two transmission links and four reception links in one frequency band. This means that the terminal can use up to two data streams in uplink transmission and up to four data streams in downlink reception. In addition, for a cell, its available total operating bandwidth is also limited. For example, when the channel bandwidth is 100MHz, its available frequency domain resources are fixed at 100MHz, and all terminals working simultaneously in the cell share the 100MHz resources. Therefore, on average, each terminal has very few resources available at a time. This also results in a limited maximum uplink transmission rate of the terminal. When a large amount of data needs to be sent or received, the uplink and downlink rates of the terminal cannot meet the demand.

Since the terminals in a cell are not related to each other, each terminal performs its own data transmission independently, and a terminal can only complete data reception and transmission by its own sending and receiving capabilities. However, due to the large number of users in the cell, the time-frequency resources that can be allocated to a single terminal are very limited, which limits the improvement of the data transmission rate of the terminal. Therefore, how to further optimize terminal data transmission in a multi-terminal scenario in a cell is a problem that needs to be solved.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

The data transmission capability of a single terminal is often difficult to meet the data transmission rate requirements of the terminal. One way to further increase the data transmission rate is cooperative data transmission between terminals, which can also be called multi-terminal joint transmission.

In Figure 2, terminal 1 and terminal 3 are terminals that need to transmit data, and they occupy different time-frequency resources respectively. At this time, terminal 2 is in an idle state and has no data to transmit, but terminal 2 itself is capable of data transmission Hardware resources, such as the transmitting link and receiving link, etc. Therefore, it can be considered to use the terminal 2 on the basis of FIG. 2 . As shown in Figure 3, assume that terminal 1 has a large amount of data that needs to be transmitted in a short time, but it cannot complete the data transmission in a short time only by relying on its own sending and receiving capabilities and the time-frequency resources allocated by the network. At this time, it may be considered to use the sending and receiving capability of the terminal 2 to perform data transmission together with the middle 1. It is assumed that terminal 1 and terminal 2 have 2 transmission links and 4 reception links respectively, that is, they are equipped with 2 data streams for transmission and 4 data streams for reception respectively. Then, when terminal 1 and terminal 2 form a terminal combination (also called a virtual terminal) and are used for transmission at the same time, their sending and receiving capabilities will be increased to transmit 4 data streams and receive 8 data streams. This will exponentially increase the sending and receiving capacity.

Here, the terminal that currently conducts business is terminal 1 (hereinafter referred to as the main terminal or the demand terminal). The terminal 2 is a terminal that shares the data transmission capability (hereinafter referred to as a secondary terminal or a shared terminal for short). Among them, there are various data transmission capabilities, such as uplink Multiple In Multiple Out (MIMO) capability, downlink MIMO capability, carrier capability, transmit power capability, etc.

In this multi-terminal joint transmission mode, how to deal with the mobility of terminal combination needs to be clarified. The following embodiments of the present application provide a mobility control method, specifically, the method is a mobility control method for terminal combination in a multi-terminal joint transmission scenario.

It should be noted that, in this embodiment of the present application, a terminal combination includes multiple terminals, and a terminal combination formed by multiple terminals may also be called a virtual terminal.

It should be noted that, in the embodiment of the present application, joint transmission may also be referred to as data sharing transmission.

It should be noted that, in the embodiment of the present application, the main terminal in the terminal combination refers to a terminal that needs to send data and/or receive data, and the main terminal may also be called a demand terminal.

It should be noted that, in the embodiment of the present application, the auxiliary terminal in the terminal combination refers to a terminal that shares data transmission capabilities, and the auxiliary terminal may also be called a shared terminal.

FIG. 4 is a first schematic flow diagram of a mobility control method provided in an embodiment of the present application. As shown in FIG. 4 , the mobility control method includes the following steps:

Step 401: the first terminal sends a first request message to the first base station, and the first base station receives the first request message, the first request message is used to request the first base station to change the terminal combination, and the terminal combination uses for joint transmission.

Step 402: The first base station changes the terminal combination based on the first request message.

In this embodiment of the present application, the terminal combination includes a primary terminal and at least one secondary terminal, and the terminal combination is used to jointly transmit data of the primary terminal.

In some optional implementation manners, for uplink transmission, the master terminal and at least one slave terminal jointly transmit the data of the master terminal to the network, wherein the data on the slave terminal side is forwarded by the master terminal to the slave terminal.

In some optional implementation manners, for downlink transmission, the network sends data for the main terminal to the main terminal and at least one secondary terminal, wherein each secondary terminal in the at least one secondary terminal forwards the received data to main terminal.

In the embodiment of the present application, the terminal combination cannot continue to implement joint transmission due to the occurrence of certain circumstances. In this case, the terminal combination needs to be changed. Here, the situation that causes the terminal combination to change includes but is not limited to: one or more terminals in the terminal combination move. The following describes how to change the terminal combination in combination with different solutions.

Option One

In this embodiment of the present application, the at least one secondary terminal includes a first secondary terminal, and the primary terminal and the first secondary terminal are located in a first cell covered by the first base station.

Solution A): the first terminal is the main terminal.

In this embodiment of the present application, the main terminal sends a first request message to the first base station, and the first base station receives the first request message sent by the main terminal; wherein, the first request message carries at least one of the following :

first information, where the first information is used to indicate that the first secondary terminal is removed from the terminal combination;

Second information, where the second information is used to indicate a reason why the first secondary terminal is removed.

In some optional implementation manners, the primary terminal measures the distance and/or propagation loss between the primary terminal and the first secondary terminal; if the distance between the primary terminal and the first secondary terminal and/or the propagation loss is greater than or equal to the first threshold, then the master terminal sends a first request message to the first base station.

In the above solution, the first secondary terminal sends a shared terminal identification signal, the primary terminal measures the shared terminal identification signal sent by the secondary terminal, and determines the relationship between the primary terminal and the secondary terminal based on the measurement result of the shared terminal identification signal. Distance and/or propagation loss between terminals. Further, optionally, the shared terminal identification signal carries at least one of the following: identification information of the secondary terminal, transmit power intensity information of the secondary terminal, and geographic location information of the secondary terminal.

In the above solution, optionally, the first threshold is configured by the network or set for the main terminal or agreed upon.

In some optional implementation manners, for the first base station, after the first base station receives the first request message sent by the primary terminal, the method further includes: the first base station sends the first secondary The terminal sends a first notification message, where the first notification message is used to notify the first secondary terminal that the first secondary terminal is removed from the terminal combination; and/or, the first base station sends the The primary terminal sends a first confirmation message, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.

In some optional implementation manners, for the main terminal, after the main terminal sends the first request message to the first base station, the method further includes: the main terminal receives the first confirmation sent by the first base station message, the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.

Solution B): the first terminal is the first secondary terminal.

In this embodiment of the present application, the first secondary terminal sends a first request message to the first base station, and the first base station receives the first request message sent by the first secondary terminal; wherein, the first request message carries at least one of the following:

In some optional implementation manners, for the first base station, after the first base station receives the first request message sent by the first secondary terminal, the method further includes: the first base station sending the primary request message to the primary terminal The terminal sends updated terminal combination information, where the updated terminal combination information includes the first information and/or the second information; and/or, the first base station sends a first confirmation message to the first secondary terminal, The first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination. Further, optionally, after the first base station sends the updated terminal combination information to the main terminal, the method further includes: the first base station receives an acknowledgment for the updated terminal combination information sent by the main terminal information.

In some optional implementation manners, for the first secondary terminal, after the first secondary terminal sends the first request message to the first base station, the method further includes: the first secondary terminal receives the first A first confirmation message sent by the base station, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.

Option II

In this embodiment of the present application, the primary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station, and the at least one secondary terminal is located in the first cell covered by the first base station.

In this embodiment of the present application, the first terminal is the main terminal.

In this embodiment of the present application, the main terminal sends a first request message to the first base station, and the first base station receives the first request message sent by the main terminal; wherein the first request message carries third information, The third information is used to indicate a combination of terminals to be disassociated from the master terminal in the first cell.

In some optional implementation manners, for the first base station, after the first base station receives the first request message sent by the master terminal, the method further includes: the first base station sends the at least one secondary Each secondary terminal in the terminals sends a first notification message, where the first notification message is used to notify the secondary terminal that the secondary terminal is removed from the terminal combination; and/or, the first base station sends The master terminal sends a first confirmation message, where the first confirmation message is used to instruct the first base station to confirm that the terminal combination associated with the master terminal has been released.

In some optional implementation manners, for the main terminal, after the main terminal sends the first request message to the first base station, the method further includes: the main terminal receives the first confirmation sent by the first base station message, the first confirmation message is used to instruct the first base station to confirm that the terminal combination associated with the main terminal has been released.

third solution

In this embodiment of the present application, the primary terminal and a first part of secondary terminals in the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station, and the at least one secondary A second part of secondary terminals among the terminals is located in the first cell covered by the first base station.

fourth information, where the fourth information is used to indicate that the second part of secondary terminals is removed from the terminal combination;

Fifth information, where the fifth information is used to instruct the first base station to handover the new terminal combination formed by the primary terminal and the first part of secondary terminals to the second base station.

In some optional implementation manners, for the first base station, after the first base station receives the first request message sent by the main terminal, the method further includes: the first base station sending the second request message to the second part Each of the secondary terminals sends a first notification message, the first notification message is used to notify the secondary terminal that the secondary terminal is removed from the terminal combination; and/or, the first base station Sending a first confirmation message to the primary terminal, where the first confirmation message is used to instruct the first base station to confirm that the second part of secondary terminals has been removed from the terminal combination.

In some optional implementation manners, for the main terminal, after the main terminal sends the first request message to the first base station, the method further includes: the main terminal receives the first confirmation message sent by the first base station , the first confirmation message is used to instruct the first base station to confirm that the second part of secondary terminals has been removed from the terminal combination.

Option four

In this embodiment of the present application, the primary terminal and the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station.

In this embodiment of the present application, the main terminal sends a first request message to the first base station, and the first base station receives the first request message sent by the main terminal; wherein the first request message carries sixth information, The sixth information is used to instruct the first base station to handover the terminal combination to the second base station.

Option five

In this embodiment of the present application, the at least one secondary terminal includes a first secondary terminal, the first secondary terminal moves from the first cell covered by the first base station to the second cell covered by the second base station, and the primary terminal Located in the first cell covered by the first base station.

In this embodiment of the present application, the first terminal is the first secondary terminal.

In this embodiment of the present application, the first secondary terminal sends a first request message to the first base station, and the first base station receives the first request message sent by the first secondary terminal; wherein, the first request message carries Seventh information, where the seventh information is used to indicate that the first secondary terminal is removed from the terminal combination.

In some optional implementation manners, for the first base station, after the first base station receives the first request message sent by the first secondary terminal, the method further includes: the first base station sending the primary request message to the primary terminal The terminal sends updated terminal combination information, where the updated terminal combination information includes the seventh information; and/or, the first base station sends a first confirmation message to the first secondary terminal, and the first confirmation message is used to Instructing the first base station to confirm that the first secondary terminal has been removed from the terminal combination. Further, optionally, after the first base station sends the updated terminal combination information to the main terminal, the method further includes: the first base station receives an acknowledgment for the updated terminal combination information sent by the main terminal information.

In the above solution, the first request message may be called a terminal combination reconfiguration request message or a terminal combination change request message. This application does not limit the name of the first request message.

In the above solution, the first confirmation message may be called a terminal combination reconfiguration confirmation message or a terminal combination change confirmation message. This application does not limit the name of the first confirmation message.

It should be noted that, the solution A) in the above solution one is a mobility control solution in a single cell, and the master terminal initiates the first request message.

It should be noted that, the solution B) in the above solution one is a mobility control solution in a single cell, and the secondary terminal initiates the first request message.

It should be noted that the above scheme 2 is a scheme of inter-cell mobility control, and the terminal combination only keeps in touch with a single base station, and the main terminal moves from the first cell to the second cell, and the main terminal initiates the first request information.

It should be noted that the above scheme three is a scheme of inter-cell mobility control, and the terminal combination only keeps in touch with a single base station, and the primary terminal and the first part of secondary terminals move from the first cell to the second cell, and the primary terminal The terminal initiates a first request message.

It should be noted that the above scheme 4 is a scheme of inter-cell mobility control, and the terminal combination only keeps in touch with a single base station, and the master terminal and all the secondary terminals move from the first cell to the second cell, and the master terminal The terminal initiates a first request message.

It should be noted that the above scheme five is a scheme of inter-cell mobility control, and the terminal combination only keeps in touch with a single base station, and the secondary terminal moves from the first cell to the second cell, and the secondary terminal initiates the first request information.

FIG. 5 is a schematic flow diagram II of a mobility control method provided in an embodiment of the present application. As shown in FIG. 5 , the mobility control method includes the following steps:

Step 501: the first base station receives a handover request message sent by the first terminal.

Step 502: The first base station sends information about a terminal combination associated with the first terminal to a second base station; the terminal combination is used for joint transmission.

In this embodiment of the present application, the first base station and the second base station jointly provide the communication service for the combination of terminals. In this case, when at least part of the main terminal and the at least one secondary terminal move from the first cell covered by the first base station to the second cell covered by the second base station, due to the first The base station and the second base station can jointly provide communication services for the terminal combination, so the terminal combination will not change, but the first base station needs to send information about the terminal combination to the second base station, so that the second base station can The combined information cooperates with the first base station to jointly provide the communication service for the terminal combination.

In the above solution, because at least some of the terminals move from the first cell to the second cell, these terminals may be referred to as handover terminals. Wherein, the at least some terminals include the first terminal. In some optional implementation manners, the first terminal is the main terminal; or, the first terminal is a secondary terminal in the at least some terminals.

It should be noted that the above-mentioned solution is a solution of inter-cell mobility control, and a combination of terminals keeps in touch with multiple base stations.

It should be noted that the "first base station" described in the embodiment of the present application refers to the "original base station" in the moving process. The "second base station" described in the embodiment of the present application refers to the "target base station" in the moving process.

The technical solutions of the embodiments of the present application are illustrated below in conjunction with specific application examples.

Application example one

As shown in FIG. 6 , terminal 1 and terminal 2 form a terminal combination in the cell, terminal 1 is the main terminal, terminal 2 is the auxiliary terminal, and terminal 2 provides auxiliary data transmission services for terminal 1. Due to the mobility of the terminal in the cell and the change of its own business conditions (for example, terminal 2 is far away from terminal 1 after a period of time, it is difficult to provide data transmission services for terminal 1, or terminal 2 has its own data to transmit and cannot provide data transmission services for terminal 1). Terminal 1 provides services, etc.), it is likely that Terminal 2 cannot continue to provide data transmission services for Terminal 1. Therefore, it is necessary to change the terminal combination associated with terminal 1.

Specifically, during the joint data transmission process of the terminal combination formed by terminal 1 and terminal 2, if terminal 2 is not suitable to continue to be a secondary terminal, the terminal combination needs to be updated:

Method 1: The master terminal initiates a terminal combination reconfiguration request

1) After forming a terminal combination, the secondary terminal transmits a secondary terminal identification signal.

Here, the secondary terminal identification signal is used by the primary terminal to identify the secondary terminal, and to measure the distance or propagation loss between the primary terminal and the secondary terminal. Optionally, the secondary terminal identification signal includes at least one of the following: identification information of the secondary terminal, transmit power intensity information of the secondary terminal, and geographic location information of the secondary terminal.

2) The primary terminal measures the identification signal of the secondary terminal, and obtains the distance or propagation loss between the primary terminal and the secondary terminal according to the measurement result.

3) If the distance or propagation loss between the master terminal and the slave terminal is greater than or equal to a certain threshold, the master terminal sends a terminal combination reconfiguration request to the base station.

Here, the threshold may be configured by the network, or may be independently set by the master terminal, or may be an agreed value.

Here, the distance or propagation loss between the master terminal and the slave terminal is greater than or equal to a certain threshold, indicating that the slave terminal is no longer suitable for providing data transmission services to the master terminal, and the master terminal sends a terminal combination reconfiguration request to the base station.

4) The base station removes the secondary terminal (that is, terminal 2) from the terminal combination.

FIG. 7 is a schematic flowchart of a mobility control method provided in an embodiment of the present application. As shown in FIG. 7 , it includes the following steps:

Step 701: The master terminal sends a terminal combination reconfiguration request message to the base station.

Here, the terminal combination reconfiguration request carries first information and/or second information, where the first information is used to indicate that the secondary terminal (that is, terminal 2) is removed from the terminal combination, and the second information is used to Indicates the reason why the secondary terminal (i.e. Terminal 2) was removed.

Step 702: the base station removes the secondary terminal from the terminal combination, and sends a notification message to the secondary terminal.

Here, the notification message is used to notify the secondary terminal to be removed from the terminal combination.

Step 703: the base station sends a terminal combination reconfiguration confirmation message to the master terminal.

Here, the combined reconfiguration acknowledgment message is used to instruct the base station to confirm that the secondary terminal (that is, terminal 2) has been removed from the terminal combination.

Method 2: The secondary terminal initiates a terminal combination reconfiguration request

1) When the secondary terminal cannot continue to provide data transmission services for the primary terminal, the secondary terminal initiates a terminal combination reconfiguration request to the base station.

2) The base station removes the secondary terminal (ie, terminal 2) from the terminal combination.

Fig. 8 is a schematic flowchart of a mobility control method provided in an embodiment of the present application, as shown in Fig. 8, including the following steps:

Step 801: the secondary terminal sends a terminal combination reconfiguration request message to the base station.

Step 802: the base station sends updated terminal combination information to the master terminal.

Here, the updated terminal combination information carries first information and/or second information, wherein the first information is used to indicate that the secondary terminal (that is, terminal 2) is removed from the terminal combination, and the second information is used to indicate The reason why the secondary terminal (i.e. terminal 2) was removed.

Step 803: the master terminal sends a confirmation message for updating terminal combination information to the base station.

Step 804: the base station removes the secondary terminal from the terminal combination, and sends a terminal combination reconfiguration confirmation message to the secondary terminal.

Application example two

When a combination of terminals moves between multiple cells, the problem of mobility management between cells will occur. A typical scenario includes that the primary terminal moves from cell 1 to cell 2, and the secondary terminal moves from cell 1 to cell 2.

Solution 1: The master terminal moves from cell 1 to cell 2

As shown in Figure 9, the primary terminal (i.e., terminal 1) enters cell 2 (i.e., the cell covered by base station 2) from cell 1 (i.e., the cell covered by base station 1) and performs inter-cell handover, while the secondary terminal (i.e., terminal 2) It remains in Zone 1. In this case, one way to deal with terminal combination is to release all terminal combinations in which terminal 1 is the main terminal. After the terminal 1 enters the cell 2, the terminal 1 will re-initiate a terminal combination request to the base station 2, so as to establish a new terminal combination in the cell 2.

FIG. 10 is a schematic flowchart of a mobility control method provided in an embodiment of the present application. As shown in FIG. 10 , it includes the following steps:

Step 1001: the master terminal sends a terminal combination reconfiguration request message to the base station.

Here, the terminal combination reconfiguration request carries third information, and the third information is used to indicate to release all terminal combinations in which the terminal 1 in the cell 1 is the primary terminal.

Step 1002: the base station removes the secondary terminal from the terminal combination, and sends a notification message to the secondary terminal.

Step 1003: the base station sends a terminal combination reconfiguration confirmation message to the master terminal.

Here, the combined reconfiguration confirmation message is used to instruct the base station to confirm that all terminal combinations of the master terminal have been released.

In some optional implementation manners, in addition to the main terminal (that is, terminal 1 ) entering cell 2 from cell 1 , some secondary terminals also move from cell 1 to cell 2 . As shown in Figure 11, the primary terminal (i.e., terminal 1) and the secondary terminal (i.e., terminal 2) enter cell 2 (i.e., the cell covered by base station 2) from cell 1 (i.e., the cell covered by base station 1) and perform inter-cell handover, while The secondary terminal (that is, terminal 3 ) still remains in cell 1 . In this case, the terminal combination formed by the secondary terminals that are switched together with the primary terminal is retained, and only the secondary terminals that are not switched together with the primary terminal are removed. Specifically, when both the primary terminal (ie, terminal 1) and the secondary terminal (ie, terminal 2) move to cell 2, and the secondary terminal (ie, terminal 3) is still in cell 1, the terminal combination of terminal 1 and terminal 2 is maintained, and The terminal combination is handed over to the base station 2 together, and the joint transmission of the terminal combination is performed under the base station 2, and the terminal 3 is removed from the terminal combination. This way can keep the communication rate of the master terminal as much as possible.

Solution 2: The secondary terminal moves from cell 1 to cell 2

As shown in Figure 12, the secondary terminal (i.e., terminal 2) enters cell 2 (i.e., the cell covered by base station 2) from cell 1 (i.e., the cell covered by base station 1) and performs inter-cell handover, while the primary terminal (i.e., terminal 1) It remains in Zone 1. In this case, one way to deal with the terminal combination is to remove the secondary terminal (i.e., terminal 2) from the terminal combination (when there are multiple secondary terminals, the remaining secondary terminals in cell 1 are still kept in the terminal within the portfolio).

Fig. 13 is a schematic flowchart of a mobility control method provided in an embodiment of the present application, as shown in Fig. 10 , including the following steps:

Step 1301: the secondary terminal sends a terminal combination reconfiguration request message to the base station.

Here, the terminal combination reconfiguration request carries seventh information, and the seventh information is used to indicate to remove the secondary terminal (that is, terminal 2 ) from the terminal combination.

Here, the seventh information is used to indicate to remove the secondary terminal (ie, terminal 2 ) from a specific terminal combination in cell 1 or from all terminal combinations in cell 1 .

Step 1302: the base station sends updated terminal combination information to the master terminal.

Here, the updated terminal combination information carries seventh information, and the seventh information is used to indicate that the secondary terminal (that is, terminal 2 ) is removed from the terminal combination.

Step 1303: the master terminal sends a confirmation message for updating terminal combination information to the base station.

Step 1304: the base station removes the secondary terminal from the terminal combination, and sends a terminal combination reconfiguration confirmation message to the secondary terminal.

Application Example 3

In the case that a plurality of base stations are used as a terminal combination to maintain connections at the same time, the terminal combination can keep the terminal combination unchanged when it moves between cells. During the combined movement of terminals, the terminals entering the new cell will communicate with the new base station after accessing the new base station, while the terminals remaining in the original cell will continue to access the original base station and communicate with the original base station. Wherein, the new base station acquires the information of the terminal combination to which the terminal entering the new cell belongs from the original base station, so as to continue the joint transmission of the terminal combination.

As shown in Figure 14, the secondary terminal (that is, terminal 2) enters cell 2 (that is, the cell covered by base station 2) from cell 1 (that is, the cell covered by base station 1) and performs inter-cell handover, and the secondary terminal (that is, terminal 2) acts as a handover terminal.

As shown in Figure 15, the master terminal (that is, terminal 1) enters cell 2 (that is, the cell covered by base station 2) from cell 1 (that is, the cell covered by base station 1) and performs inter-cell handover, and the master terminal (that is, terminal 1) acts as the handover terminal.

Fig. 16 is a schematic flowchart of a mobility control method provided in an embodiment of the present application, as shown in Fig. 16 , including the following steps:

Step 1601: the handover terminal sends a handover request message to base station 1 .

Step 1602: Base station 1 forwards the information about switching the terminal combination of the terminal to base station 2.

Step 1603: Base station 2 communicates with the handover terminal based on the terminal combination information.

The technical solution of the embodiment of the present application can complete the mobility control of the combination of terminals in a single cell or among multiple cells. Through the implementation of the above technical solutions, joint transmission of multiple terminals and corresponding mobility control can be realized.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Fig. 17 is a schematic diagram of the first structural composition of the mobility control device provided by the embodiment of the present application, which is applied to the first base station. As shown in Fig. 17, the mobility control device includes:

The receiving unit 1701 is configured to receive a first request message, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission;

The changing unit 1702 is configured to change the terminal combination based on the first request message.

In some optional implementation manners, the terminal combination includes a primary terminal and at least one secondary terminal, and the terminal combination is used to jointly transmit data of the primary terminal.

In some optional implementation manners, the at least one secondary terminal includes a first secondary terminal, and the primary terminal and the first secondary terminal are located in a first cell covered by the first base station.

In some optional implementation manners, the receiving unit 1701 is configured to receive a first request message sent by the main terminal; wherein the first request message carries at least one of the following:

In some optional implementation manners, the apparatus further includes: a sending unit 1703, configured to send a first notification message to the first secondary terminal, where the first notification message is used to notify the first secondary terminal that the The first secondary terminal is removed from the terminal combination; and/or, sending a first confirmation message to the primary terminal, the first confirmation message is used to indicate that the first base station confirms that the first The secondary terminal is removed from the terminal group.

In some optional implementation manners, the receiving unit 1701 is configured to receive a first request message sent by the first secondary terminal; wherein the first request message carries at least one of the following:

In some optional implementation manners, the apparatus further includes: a sending unit 1703, configured to send updated terminal combination information to the master terminal, where the updated terminal combination information includes the first information and/or the second information; and/or, sending a first confirmation message to the first secondary terminal, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination .

In some optional implementation manners, the receiving unit 1701 is configured to receive a confirmation message for the updated terminal combination information sent by the main terminal.

In some optional implementation manners, the primary terminal moves from the first cell covered by the first base station to the second cell covered by the second base station, and the at least one secondary terminal is located in the first cell covered by the first base station. district.

In some optional implementation manners, the receiving unit 1701 is configured to receive a first request message sent by the main terminal; wherein, the first request message carries third information, and the third information is used to indicate the release A combination of terminals associated with the main terminal in the first cell.

In some optional implementation manners, the apparatus further includes: a sending unit 1703, configured to send a first notification message to each secondary terminal in the at least one secondary terminal, where the first notification message is used to notify the a secondary terminal, wherein the secondary terminal is removed from the terminal combination; and/or, sending a first confirmation message to the primary terminal, where the first confirmation message is used to instruct the first base station to confirm that the The terminal combination associated with the main terminal is released.

In some optional implementation manners, the primary terminal and a first part of secondary terminals in the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station, and the at least A second part of secondary terminals in one secondary terminal is located in the first cell covered by the first base station.

In some optional implementation manners, the apparatus further includes: a sending unit 1703, configured to send a first notification message to each secondary terminal in the second part of secondary terminals, where the first notification message is used to notify all The secondary terminal, the secondary terminal is removed from the terminal combination; and/or, sending a first confirmation message to the primary terminal, the first confirmation message is used to instruct the first base station to confirm that the The second part of secondary terminals is removed from the terminal combination.

In some optional implementation manners, the primary terminal and the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station.

In some optional implementation manners, the receiving unit 1701 is configured to receive a first request message sent by the main terminal; wherein the first request message carries sixth information, and the sixth information is used to indicate the The first base station switches the combination of terminals to the second base station.

In some optional implementation manners, the at least one secondary terminal includes a first secondary terminal, and the first secondary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station, the The main terminal is located in the first cell covered by the first base station.

In some optional implementation manners, the receiving unit 1701 is configured to receive a first request message sent by the first secondary terminal; wherein, the first request message carries seventh information, and the seventh information is used for Instruct to remove the first secondary terminal from the terminal combination.

In some optional implementation manners, the apparatus further includes: a sending unit 1703, configured to send updated terminal combination information to the master terminal, where the updated terminal combination information includes the seventh information; The first secondary terminal sends a first confirmation message, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.

In some optional implementation manners, the receiving unit 1701 is configured to receive a confirmation message sent by the master terminal for the updated terminal combination information.

Those skilled in the art should understand that the related description of the mobility control apparatus in the embodiment of the present application can be understood with reference to the related description of the mobility control method in the embodiment of the present application.

Fig. 18 is a second structural diagram of the mobility control device provided by the embodiment of the present application, which is applied to the first base station. As shown in Fig. 18, the mobility control device includes:

a receiving unit 1801, configured to receive a handover request message sent by the first terminal;

The sending unit 1802 is configured to send the information of the terminal combination associated with the first terminal to the second base station; the terminal combination is used for joint transmission.

In some optional implementation manners, at least part of the primary terminal and the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station.

In some optional implementation manners, the at least some terminals include the first terminal,

The first terminal is the master terminal; or,

The first terminal is a secondary terminal in the at least some terminals.

In some optional implementation manners, the first base station and the second base station jointly provide communication services for the combination of terminals.

Fig. 19 is a schematic diagram of the third structural composition of the mobility control device provided by the embodiment of the present application, which is applied to the first terminal. As shown in Fig. 19, the mobility control device includes:

The sending unit 1901 is configured to send a first request message to a first base station, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission.

In some optional implementation manners, the first terminal is the main terminal;

The sending unit 1901 is configured to send a first request message to the first base station; wherein the first request message carries at least one of the following:

In some optional implementation manners, the apparatus further includes: a receiving unit 1902, configured to receive a first confirmation message sent by the first base station, where the first confirmation message is used to indicate that the first base station has confirmed that the The first secondary terminal is removed from the terminal combination.

In some optional implementation manners, the apparatus further includes: a measuring unit 1903, configured to measure the distance and/or propagation loss between the primary terminal and the first secondary terminal;

The sending unit 1901 is configured to send a first request message to a first base station if the distance and/or propagation loss between the primary terminal and the first secondary terminal is greater than or equal to a first threshold.

In some optional implementation manners, the first threshold is configured by the network or set for the main terminal or agreed upon.

In some optional implementation manners, the measuring unit 1903 is configured to measure the secondary terminal identification signal sent by the first secondary terminal, and determine the relationship between the primary terminal and the first secondary terminal based on the measurement result of the secondary terminal identification signal. Distance and/or propagation loss between secondary terminals.

In some optional implementation manners, the secondary terminal identification signal carries at least one of the following: identification information of the first secondary terminal, transmit power intensity information of the first secondary terminal, geographical location of the first secondary terminal location information.

In some optional implementation manners, the first terminal is the first secondary terminal;

In some optional implementation manners, the first terminal is the master terminal;

The sending unit 1901 is configured to send a first request message to a first base station; wherein, the first request message carries third information, and the third information is used to indicate to release the master in the first cell. Terminal combination for terminal associations.

In some optional implementation manners, the apparatus further includes: a receiving unit 1902, configured to receive a first confirmation message sent by the first base station, where the first confirmation message is used to indicate that the first base station has confirmed that the The terminal combination associated with the main terminal is released.

In some optional implementation manners, the apparatus further includes: a receiving unit 1902, configured to receive a first confirmation message sent by the first base station, where the first confirmation message is used to indicate that the first base station confirms that the The second part of secondary terminals is removed from the terminal combination.

The sending unit 1901 is configured to send a first request message to the first base station; wherein the first request message carries sixth information, and the sixth information is used to instruct the first base station to switch the terminal combination to the second base station.

The sending unit 1901 is configured to send a first request message to the first base station; wherein the first request message carries seventh information, and the seventh information is used to indicate that the first secondary terminal is sent from the terminal removed from the combination.

FIG. 20 is a schematic structural diagram of a communication device 2000 provided by an embodiment of the present application. The communication device may be a terminal (such as the first terminal), or may be a network device (such as the first base station). The communication device 2000 shown in FIG. 20 includes a processor 2010, and the processor 2010 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 20 , the communication device 2000 may further include a memory 2020 . Wherein, the processor 2010 can invoke and run a computer program from the memory 2020, so as to implement the method in the embodiment of the present application.

Wherein, the memory 2020 may be a separate device independent of the processor 2010 , or may be integrated in the processor 2010 .

Optionally, as shown in FIG. 20, the communication device 2000 may further include a transceiver 2030, and the processor 2010 may control the transceiver 2030 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 2030 may include a transmitter and a receiver. The transceiver 2030 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 2000 may specifically be the network device of the embodiment of the present application, and the communication device 2000 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 2000 may specifically be the mobile terminal/terminal of the embodiment of the present application, and the communication device 2000 may implement the corresponding processes implemented by the mobile terminal/terminal in each method of the embodiment of the present application. For brevity, in This will not be repeated here.

FIG. 21 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 2100 shown in FIG. 21 includes a processor 2110, and the processor 2110 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 21 , the chip 2100 may further include a memory 2120 . Wherein, the processor 2110 can invoke and run a computer program from the memory 2120, so as to implement the method in the embodiment of the present application.

Wherein, the memory 2120 may be an independent device independent of the processor 2110 , or may be integrated in the processor 2110 .

Optionally, the chip 2100 may also include an input interface 2130 . Wherein, the processor 2110 can control the input interface 2130 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 2100 may also include an output interface 2140 . Wherein, the processor 2110 can control the output interface 2140 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 network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

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 processes implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application. For the sake of brevity, no more repeat.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 22 is a schematic block diagram of a communication system 2200 provided by an embodiment of the present application. As shown in FIG. 22 , the communication system 2200 includes a terminal 2210 and a network device 2220 .

Wherein, the terminal 2210 can be used to realize the corresponding functions realized by the terminal in the above method, and the network device 2220 can be used to realize the corresponding functions realized by the network device in the above method. For the sake of brevity, details are not repeated here.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A 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 connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented 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, 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 a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. 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), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and 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 memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be 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 can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal in the methods of the embodiments of the present application, for It is concise and will not be repeated here.

The embodiment of the present application also provides 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, the Let me repeat.

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 processes implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application. For the sake of brevity , which 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 embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal in the embodiments of the present application. When the computer program is run on the computer, the computer executes the corresponding functions implemented by the mobile terminal/terminal in the methods of the embodiments of the present application. For the sake of brevity, the process will not be repeated here.

Those skilled in the art can appreciate 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 by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the 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 systems, devices and methods 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. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can 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, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art 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 methods described in the various 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 disc, etc., which can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A mobility control method, the method comprising:

The first base station receives a first request message, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission;

The first base station changes the terminal combination based on the first request message.
The method according to claim 1, wherein the terminal combination includes a primary terminal and at least one secondary terminal, and the terminal combination is used to jointly transmit data of the primary terminal.
The method according to claim 2, wherein the at least one secondary terminal comprises a first secondary terminal, and the primary terminal and the first secondary terminal are located in a first cell covered by the first base station.
The method according to claim 3, wherein the receiving the first request message by the first base station comprises:

The first base station receives a first request message sent by the main terminal; wherein the first request message carries at least one of the following:

first information, where the first information is used to indicate that the first secondary terminal is removed from the terminal combination;

Second information, where the second information is used to indicate a reason why the first secondary terminal is removed.
The method according to claim 4, wherein, after the first base station receives the first request message sent by the master terminal, the method further comprises:

The first base station sends a first notification message to the first secondary terminal, where the first notification message is used to notify the first secondary terminal that the first secondary terminal is removed from the terminal combination; and /or,

The first base station sends a first confirmation message to the primary terminal, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.
The method according to claim 3, wherein the receiving the first request message by the first base station comprises:

The first base station receives a first request message sent by the first secondary terminal; wherein the first request message carries at least one of the following:

first information, where the first information is used to indicate that the first secondary terminal is removed from the terminal combination;

Second information, where the second information is used to indicate a reason why the first secondary terminal is removed.
The method according to claim 6, wherein after the first base station receives the first request message sent by the first secondary terminal, the method further comprises:

The first base station sends updated terminal combination information to the master terminal, where the updated terminal combination information includes the first information and/or the second information; and/or,

The first base station sends a first confirmation message to the first secondary terminal, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.
The method according to claim 7, wherein after the first base station sends updated terminal combination information to the master terminal, the method further comprises:

The first base station receives an acknowledgment message for updating terminal combination information sent by the master terminal.
The method according to claim 2, wherein the primary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station, and the at least one secondary terminal is located in a cell covered by the first base station. of the first district.
The method according to claim 9, wherein the receiving the first request message by the first base station comprises:

The first base station receives a first request message sent by the master terminal; wherein the first request message carries third information, and the third information is used to indicate to release the master terminal in the first cell Associated terminal combination.
The method according to claim 10, wherein, after the first base station receives the first request message sent by the main terminal, the method further comprises:

The first base station sends a first notification message to each secondary terminal in the at least one secondary terminal, where the first notification message is used to notify the secondary terminal that the secondary terminal is removed from the terminal combination ;and / or,

The first base station sends a first confirmation message to the master terminal, where the first confirmation message is used to instruct the first base station to confirm that the terminal combination associated with the master terminal has been released.
The method according to claim 2, wherein a first part of the primary terminal and the at least one secondary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station, A second part of secondary terminals in the at least one secondary terminal is located in a first cell covered by the first base station.
The method according to claim 12, wherein the first base station receiving the first request message comprises:

The first base station receives a first request message sent by the main terminal; wherein the first request message carries at least one of the following:

fourth information, where the fourth information is used to indicate that the second part of secondary terminals is removed from the terminal combination;

Fifth information, where the fifth information is used to instruct the first base station to handover the new terminal combination formed by the primary terminal and the first part of secondary terminals to the second base station.
The method according to claim 13, wherein, after the first base station receives the first request message sent by the master terminal, the method further comprises:

The first base station sends a first notification message to each secondary terminal in the second part of secondary terminals, where the first notification message is used to notify the secondary terminal that the secondary terminal is removed from the terminal combination except; and/or,

The first base station sends a first confirmation message to the primary terminal, where the first confirmation message is used to instruct the first base station to confirm that the second part of secondary terminals has been removed from the terminal combination.
The method according to claim 2, wherein the primary terminal and the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station.
The method according to claim 15, wherein the first base station receiving the first request message comprises:

The first base station receives a first request message sent by the main terminal; wherein the first request message carries sixth information, and the sixth information is used to instruct the first base station to switch the terminal combination to The second base station.
The method according to claim 2, wherein the at least one secondary terminal comprises a first secondary terminal, and the first secondary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station , the master terminal is located in a first cell covered by the first base station.
The method according to claim 17, wherein the first base station receiving the first request message comprises:

The first base station receives the first request message sent by the first secondary terminal; wherein, the first request message carries seventh information, and the seventh information is used to indicate that the first secondary terminal is sent from the Removed from terminal mix.
The method according to claim 18, wherein after the first base station receives the first request message sent by the first secondary terminal, the method further comprises:

The first base station sends updated terminal combination information to the master terminal, where the updated terminal combination information includes the seventh information; and/or,

The first base station sends a first confirmation message to the first secondary terminal, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.
The method according to claim 19, wherein after the first base station sends updated terminal combination information to the main terminal, the method further comprises:

The first base station receives an acknowledgment message for updating terminal combination information sent by the master terminal.
A mobility control method, the method comprising:

The first base station receives the handover request message sent by the first terminal;

The first base station sends information about a terminal combination associated with the first terminal to a second base station; the terminal combination is used for joint transmission.
The method according to claim 21, wherein the terminal combination includes a primary terminal and at least one secondary terminal, and the terminal combination is used to jointly transmit data of the primary terminal.
The method according to claim 22, wherein at least part of the primary terminal and the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station.
The method of claim 23, wherein said at least some terminals comprise said first terminal,

The first terminal is the master terminal; or,

The first terminal is a secondary terminal in the at least some terminals.
The method according to any one of claims 21 to 23, wherein the first base station and the second base station jointly provide communication services for the combination of terminals.
A mobility control method, the method comprising:

The first terminal sends a first request message to the first base station, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission.
The method according to claim 26, wherein the terminal combination includes a primary terminal and at least one secondary terminal, and the terminal combination is used to jointly transmit data of the primary terminal.
The method according to claim 27, wherein the at least one secondary terminal comprises a first secondary terminal, and the primary terminal and the first secondary terminal are located in a first cell covered by the first base station.
The method according to claim 28, wherein the first terminal is the master terminal;

The first terminal sends a first request message to the first base station, including:

The master terminal sends a first request message to the first base station; wherein the first request message carries at least one of the following:

first information, where the first information is used to indicate that the first secondary terminal is removed from the terminal combination;

Second information, where the second information is used to indicate a reason why the first secondary terminal is removed.
The method according to claim 29, wherein, after the main terminal sends the first request message to the first base station, the method further comprises:

The primary terminal receives a first confirmation message sent by the first base station, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination.
The method according to claim 29 or 30, wherein the master terminal sends the first request message to the first base station, comprising:

The primary terminal measures the distance and/or propagation loss between the primary terminal and the first secondary terminal;

If the distance and/or propagation loss between the primary terminal and the first secondary terminal is greater than or equal to a first threshold, the primary terminal sends a first request message to the first base station.
The method according to claim 31, wherein the first threshold is configured by the network or set for the master terminal or agreed upon.
The method according to claim 31 or 32, wherein the primary terminal measuring the distance and/or propagation loss between the primary terminal and the first secondary terminal comprises:

The primary terminal measures the secondary terminal identification signal sent by the first secondary terminal, and determines the distance and/or propagation loss between the primary terminal and the first secondary terminal based on the measurement result of the secondary terminal identification signal.
The method according to claim 33, wherein the secondary terminal identification signal carries at least one of the following:

The identification information of the first secondary terminal, the transmit power intensity information of the first secondary terminal, and the geographic location information of the first secondary terminal.
The method according to claim 28, wherein the first terminal is the first secondary terminal;

The first terminal sends a first request message to the first base station, including:

The first secondary terminal sends a first request message to the first base station; wherein the first request message carries at least one of the following:

first information, where the first information is used to indicate that the first secondary terminal is removed from the terminal combination;

Second information, where the second information is used to indicate a reason why the first secondary terminal is removed.
The method according to claim 35, wherein after the first secondary terminal sends the first request message to the first base station, the method further comprises:

The first secondary terminal receives a first confirmation message sent by the first base station, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination .
The method according to claim 27, wherein the primary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station, and the at least one secondary terminal is located in a cell covered by the first base station. of the first district.
The method according to claim 37, wherein the first terminal is the master terminal;

The first terminal sends a first request message to the first base station, including:

The master terminal sends a first request message to the first base station; wherein, the first request message carries third information, and the third information is used to indicate a terminal that disassociates the master terminal in the first cell combination.
The method according to claim 38, wherein, after the main terminal sends the first request message to the first base station, the method further comprises:

The master terminal receives a first confirmation message sent by the first base station, where the first confirmation message is used to instruct the first base station to confirm that the terminal combination associated with the master terminal has been released.
The method according to claim 27, wherein a first part of the primary terminal and the at least one secondary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station, A second part of secondary terminals in the at least one secondary terminal is located in a first cell covered by the first base station.
The method according to claim 40, wherein the first terminal is the master terminal;

The first terminal sends a first request message to the first base station, including:

The master terminal sends a first request message to the first base station; wherein the first request message carries at least one of the following:

fourth information, where the fourth information is used to indicate that the second part of secondary terminals is removed from the terminal combination;

Fifth information, where the fifth information is used to instruct the first base station to hand over the new terminal combination formed by the primary terminal and the first part of secondary terminals to the second base station.
The method according to claim 41, wherein, after the main terminal sends the first request message to the first base station, the method further comprises:

The primary terminal receives a first confirmation message sent by the first base station, where the first confirmation message is used to instruct the first base station to confirm that the second part of secondary terminals has been removed from the terminal combination.
The method according to claim 27, wherein the primary terminal and the at least one secondary terminal move from a first cell covered by the first base station to a second cell covered by a second base station.
The method according to claim 43, wherein the first terminal is the master terminal;

The first terminal sends a first request message to the first base station, including:

The main terminal sends a first request message to the first base station; wherein the first request message carries sixth information, and the sixth information is used to instruct the first base station to switch the terminal combination to the first base station. Second base station.
The method according to claim 27, wherein the at least one secondary terminal comprises a first secondary terminal, and the first secondary terminal moves from a first cell covered by the first base station to a second cell covered by a second base station , the master terminal is located in a first cell covered by the first base station.
The method according to claim 45, wherein the first terminal is the first secondary terminal;

The first terminal sends a first request message to the first base station, including:

The first secondary terminal sends a first request message to the first base station; wherein the first request message carries seventh information, and the seventh information is used to indicate that the first secondary terminal is removed from the terminal combination remove.
The method according to claim 46, wherein after the first secondary terminal sends the first request message to the first base station, the method further comprises:

The first secondary terminal receives a first confirmation message sent by the first base station, where the first confirmation message is used to instruct the first base station to confirm that the first secondary terminal has been removed from the terminal combination .
A mobility control device, applied to a first base station, the device comprising:

A receiving unit, configured to receive a first request message, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission;

A changing unit, configured to change the terminal combination based on the first request message.
A mobility control device, applied to a first base station, the device comprising:

a receiving unit, configured to receive a handover request message sent by the first terminal;

A sending unit, configured to send information about a terminal combination associated with the first terminal to a second base station; the terminal combination is used for joint transmission.
A mobility control device, applied to a first terminal, the device comprising:

A sending unit, configured to send a first request message to the first base station, where the first request message is used to request the first base station to change a terminal combination, where the terminal combination is used for joint transmission.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute the computer program described in any one of claims 1 to 20 , or a method as claimed in any one of claims 21 to 25.
A terminal, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the method described in any one of claims 26 to 47 method.
A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 20, or claims 21 to 25 any one of the methods described.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method as claimed in any one of claims 26 to 47.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 20, or the method according to any one of claims 21 to 25 .
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 26-47.
A computer program product, comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 20, or the method according to any one of claims 21 to 25.
A computer program product comprising computer program instructions causing a computer to perform the method as claimed in any one of claims 26 to 47.
A computer program that causes a computer to execute the method according to any one of claims 1 to 20, or the method according to any one of claims 21 to 25.
A computer program that causes a computer to perform the method as claimed in any one of claims 26 to 47.