WO2023083115A1

WO2023083115A1 - Switching method, communication method, apparatus, related device, and storage medium

Info

Publication number: WO2023083115A1
Application number: PCT/CN2022/129913
Authority: WO
Inventors: 谢芳
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2021-11-12
Filing date: 2022-11-04
Publication date: 2023-05-19
Also published as: CN116133073A

Abstract

The present application discloses a switching method, a communication method, an apparatus, a first base station, a second base station, a base station, and a storage medium. The method comprises: a first base station determines that a terminal must switch an anchor cell, one anchor cell anchoring at least one non-anchor cell; selects a target anchor cell from among at least one candidate anchor cell; sends a switching command to the terminal, and notifies the target anchor cell that an anchor cell of the terminal is to be switched to the target anchor cell, the switching command at least comprising relevant information of the target anchor cell.

Description

Handover method, communication method, device, related equipment and storage medium

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202111340903.0 and a filing date of November 12, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the field of wireless communication, and in particular to a handover method, a communication method, a device, related equipment and a storage medium.

Background technique

In related technologies, in the scenario of coordinated deployment of high and low frequencies, low frequencies are more suitable for sending control plane information such as broadcast messages and paging messages due to their wide coverage and strong anti-weakness capabilities; while higher frequency bands have wider bandwidths , more suitable for capacity enhancement.

In order to reduce the overhead of broadcasting messages on the network side, a possible high- and low-frequency coordinated deployment scenario is that the low-frequency cell is used as the anchor point of the high-frequency cell (English can be expressed as anchor), responsible for broadcasting system messages and sending paging messages, while in Idle (English can be expressed as idle) and inactive (English can be expressed as inactive) state terminals only need to receive broadcast and paging messages on the low-frequency anchor cell; Initiate random access on high-frequency cells according to the rule. In this way, terminals can be distributed to access different cells to avoid cell congestion. Wherein, at least one cell anchored on the same anchor cell and the anchor cell may be referred to as a group of elastic cells.

In related technologies, there is no effective solution for how a terminal switches between elastic cells.

Contents of the invention

In order to solve related technical problems, embodiments of the present application provide a handover method, a communication method, a device, related equipment, and a storage medium.

The technical scheme of the embodiment of the application is realized in this way:

An embodiment of the present application provides a handover method applied to a first base station, including:

Determine that the terminal needs to switch the anchor cell; an anchor cell has at least one non-anchor cell;

selecting a target anchor cell from at least one candidate anchor cell;

Sending a handover command to the terminal, and notifying the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, where the handover command includes at least information about the target anchor cell.

In the above solution, the selection of the target anchor cell from at least one candidate anchor cell includes:

Sending a handover request message to the base station of at least one candidate anchor cell; the handover request message at least includes an identifier of a non-anchor cell currently serving the terminal and corresponding measurement results;

receiving a handover confirmation message sent by the base station of at least one candidate anchor cell;

Selecting a cell from at least one candidate anchor cell as the target anchor cell.

In the above solution, the handover confirmation message at least includes relevant information of candidate anchor cells.

In the above solution, the relevant information of the candidate anchor cell includes at least one of the following:

The identification of the candidate anchor cell;

The frequency point of the candidate anchor cell;

Resource information for receiving information in candidate anchor cells;

the latest system information;

The identifier used by the terminal in the candidate anchor cell;

key information.

In the above solution, the handover confirmation message further includes relevant information of the non-anchor cell.

In the above solution, the handover confirmation message includes at least first information, and the first information indicates that the terminal does not need to change the non-anchor cell.

In the above solution, it is determined that the terminal needs to switch the anchor cell without replacing the non-anchor cell; the target anchor cell at least anchors the non-anchor cell currently providing services for the terminal; the handover command It also includes second information, where the second information indicates that the terminal does not change the non-anchor cell.

In the above solution, the handover command further includes information about non-anchor cells.

In the above scheme, the method also includes:

The at least one non-anchor cell of the respective anchor interacts with the base station of the at least one candidate anchor cell.

In the above solution, the base station of at least one candidate anchor cell interacts with at least one non-anchor cell of each anchor during an interface establishment process or a configuration update process.

In the above solution, the first base station includes a base station of an anchor cell or a base station of a non-anchor cell.

In the above solution, the first base station includes a base station of an anchor cell; the method further includes:

Sending third information to the base station where the non-anchor cell of the terminal is located, where the third information represents the relevant identity of the target anchor cell.

The embodiment of the present application also provides a handover method applied to the second base station, including:

The anchor cell of the terminal receiving the notification from the first base station will be handed over to the target anchor cell; wherein, an anchor cell is anchored by at least one non-anchor cell.

In the above scheme, the method also includes:

Receiving a handover request message sent by the first base station; the handover request message is used to request to switch the anchor cell for the terminal; the handover request message at least includes the identity of the non-anchor cell currently serving the terminal and the corresponding the measurement results;

Sending a handover confirmation message to the first base station.

The identification of the candidate anchor cell;

The frequency point of the candidate anchor cell;

Resource information for receiving information in candidate anchor cells;

the latest system information;

The identifier used by the terminal in the candidate anchor cell;

key information.

In the above scheme, the method also includes:

At least one non-anchor cell of a respective anchor interacts with at least one base station.

In the above solution, at least one non-anchor cell of each anchor is interacted with at least one base station during an interface establishment process or a configuration update process.

The embodiment of the present application also provides a communication method applied to a base station, including:

The embodiment of the present application also provides a switching device, including:

The first processing unit is configured to determine that the terminal needs to switch the anchor cell; an anchor cell has at least one non-anchor cell;

A second processing unit configured to select a target anchor cell from at least one candidate anchor cell;

The first sending unit is configured to send a switching command to the terminal, and notify the target anchor cell that the anchor cell of the terminal will switch to the target anchor cell, and the switching command includes at least the target anchor cell Click on the relevant information of the district.

The receiving unit is configured to receive notification from the first base station that the anchor cell of the terminal will be handed over to the target anchor cell; wherein, one anchor cell anchors at least one non-anchor cell.

The embodiment of the present application also provides a communication device, including:

The interaction unit is configured to interact with at least one base station with at least one non-anchor cell of each anchor.

The embodiment of the present application also provides a first base station, including: a first communication interface and a first processor; wherein,

The first processor is configured to determine that the terminal needs to switch anchor cells; an anchor cell anchors at least one non-anchor cell; and selects a target anchor cell from at least one candidate anchor cell; the second A communication interface, configured to send a handover command to the terminal, and notify the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, and the handover command includes at least the target anchor cell Information about the community;

or,

The first communication interface is configured to exchange at least one non-anchor cell of each anchor with at least one base station.

The embodiment of the present application also provides a second base station, including: a second communication interface and a second processor; wherein,

The second communication interface is configured to receive notification from the first base station that the anchor cell of the terminal will switch to the target anchor cell; an anchor cell has at least one non-anchor cell;

or,

The second communication interface is configured to exchange at least one non-anchor cell of each anchor with at least one base station.

An embodiment of the present application also provides a first base station, including: a first processor and a first memory configured to store a computer program that can run on the processor,

Wherein, the first processor is configured to, when running the computer program, execute the steps of any method on the first base station side above, or execute the steps of the method described in claim 22 or 23.

An embodiment of the present application also provides a second base station, including: a second processor and a second memory configured to store a computer program that can run on the processor,

Wherein, the second processor is configured to execute the steps of any method on the second base station side above, or execute the steps of the method described in claim 22 or 23 when running the computer program.

The embodiment of the present application also provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it realizes the steps of any of the above-mentioned methods on the first base station side, or realizes the steps of any of the above-mentioned methods on the second base station side. step.

In the handover method, communication method, device, related equipment, and storage medium provided in the embodiments of the present application, the first base station determines that the terminal needs to perform anchor cell handover; an anchor cell anchor has at least one non-anchor cell; from at least one candidate Selecting a target anchor cell from the anchor cells; sending a handover command to the terminal, and notifying the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, and the handover command includes at least the Describe the relevant information of the target anchor cell. The solution of the embodiment of the present application realizes handover of a terminal between elastic cells in a scenario where an anchor cell is anchored by at least one non-anchor cell, that is, in an elastic cell scenario.

Description of drawings

FIG. 1 is a schematic flowchart of a handover method according to an embodiment of the present application;

FIG. 2 is a schematic flowchart of another handover method according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a switching device according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another switching device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a first base station according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a second base station according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a handover system according to an embodiment of the present application.

Detailed ways

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments.

The embodiment of the present application provides a handover method, which is applied to the first base station (such as gNB, etc.), as shown in Figure 1, the method includes:

Step 101: Determine that the terminal needs to switch the anchor cell;

Here, an anchor cell anchor has at least one non-anchor cell;

Step 102: Select a target anchor cell from at least one candidate anchor cell;

Step 103: Send a handover command to the terminal, and notify the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, and the handover command at least includes information about the target anchor cell information.

Wherein, the first base station may include a base station of an anchor cell or a base station of a non-anchor cell.

In practical applications, the terminal may also be called user equipment (UE, User Equipment), and may also be called a user.

In addition, in practical application, a non-anchor cell may be anchored on one or more anchor cells.

In step 101, in actual application, the first base station may determine whether the terminal needs to perform anchor cell handover according to the measurement result of the terminal.

Exemplarily, in a case where the signal quality of the anchor cell currently serving the terminal does not meet a preset first condition, the first base station may determine that the terminal needs to switch the anchor cell; When the signal quality of the anchor cell currently serving the terminal satisfies the first condition, the first base station may determine that the terminal does not need to perform handover of the anchor cell.

Here, the first condition may be specifically set according to requirements, which is not limited in this embodiment of the present application.

In actual application, the anchor cell is responsible for the control plane information, and for the user plane data, the following two situations can occur:

1) Only non-anchor cells are responsible for user plane data;

2) Both the anchor cell and the non-anchor cell are responsible for user plane data.

In step 102, in actual application, the first base station needs to interact with at least one base station of a candidate anchor cell to select a target anchor cell.

Based on this, in an embodiment, the specific implementation of step 102 may include:

Sending a handover request message to the base station of at least one candidate anchor cell; the handover request message at least includes an identifier and a corresponding measurement result of a non-anchor cell currently serving the terminal;

Here, the handover confirmation message at least includes relevant information of candidate anchor cells.

Wherein, the relevant information of the candidate anchor cell may include at least one of the following:

The identification of the candidate anchor cell;

The frequency point of the candidate anchor cell;

Resource information for receiving information in candidate anchor cells;

the latest system information;

The identifier used by the terminal in the candidate anchor cell;

key information.

In practical applications, for example, the identifier of the candidate anchor cell may include a Physical Cell Identifier (PCI, Physical Cell Identifier), etc., which is not limited in this embodiment of the present application.

The frequency point information of the candidate anchor cell may include the working frequency information or frequency domain position information of the candidate anchor cell, such as a partial bandwidth (BWP, Bandwidth Part) related identifier.

The resource information of receiving information in the candidate anchor cell may include time domain location, frequency domain location and other information for the terminal to receive updated system information after switching to the target anchor cell.

The latest system information refers to the latest system information in chronological order.

The identifier used by the terminal in the candidate anchor cell includes a Cell-Radio Network Temporary Identifier (C-RNTI, Cell-Radio Network Temporary Identifier), etc., which is not limited in this embodiment of the present application.

The key information may be used by the terminal to implement an encryption algorithm in the new anchor cell after switching to the target anchor cell.

In actual application, after receiving the handover request message, the base station of each candidate anchor cell may perform admission control on the terminal.

Among them, one implementation method for the terminal to switch between elastic cells is: when the terminal switches between elastic cells, the control plane needs to be handed over between two adjacent anchor cells, that is, the terminal needs to disconnect from the source anchor cell first. Point cell connection (of course, the terminal also disconnects the connection of the non-anchor cell anchored by the source anchor point), initiates random access in the target anchor point cell, and establishes a radio resource control (RRC, Radio Resource Control) connection. In this way, The user plane of the terminal will experience a period of data transmission rate drop, affecting the service experience of the terminal.

Based on this, in the embodiment of the present application, after receiving the handover request message, the base station of each candidate anchor cell can also determine whether the corresponding candidate anchor cell is anchored by a non-anchor cell that currently provides services for the terminal. cell, and return a judgment result to the first base station through the handover confirmation message. After the first base station receives the handover confirmation message sent by the base station of at least one candidate anchor cell, it may preferentially select a candidate anchor cell that does not need to replace a non-anchor cell that provides services for the terminal as the target anchor according to a preset strategy. In order to realize the working mechanism of not replacing the non-anchor cell but only the anchor cell during the handover process, so as to ensure that the data plane of the terminal does not drop during the handover process (that is, maintain the data rate), so as not to affect the terminal business experience.

In an embodiment, the handover confirmation message may include first information, and the first information indicates that the terminal does not need to change the non-anchor cell.

In practical applications, after receiving the handover request message, the base station of each candidate anchor cell may also determine the Whether the terminal needs to change the non-anchor cell, if it is determined that the terminal does not need to change the non-anchor cell, send the first information to the first base station through the handover confirmation message. After receiving the handover confirmation message, the first base station may use the first information as a reference and combine the measurement results of the terminal to determine whether the terminal needs to change to a non-anchor cell.

Exemplarily, when the signal quality of the non-anchor cell currently serving the terminal does not meet the preset second condition, the first base station may determine that the terminal needs to change the non-anchor cell; If the signal quality of the non-anchor cell currently serving the terminal satisfies the second condition, and the base station of the candidate anchor cell sends the first information, the first base station may determine that the terminal does not need Replace the non-anchor cell.

Here, the signal quality of the non-anchor cell satisfies the second condition, which means that the signal quality of the non-anchor cell is not bad, and the second condition may be the same as or different from the first condition. The embodiment does not limit this.

In practical application, after the first base station determines that the terminal does not need to change the non-anchor cell, it may indicate to the terminal through the handover command.

Based on this, in an embodiment, the handover command may further include second information, and the second information instructs the terminal not to change the non-anchor cell.

Wherein, the target anchor cell is at least anchored by a non-anchor cell currently serving the terminal.

In practical applications, after receiving the first information, the terminal may continue to perform data transmission on the corresponding non-anchor cell after handing over to the target anchor cell; The key used by the cell may also remain unchanged.

In practical applications, the base station of the candidate anchor cell may send the relevant information of the non-anchor cell to the first base station through the handover confirmation message, so that the first base station may refer to the relevant information of the non-anchor cell to select The target anchor cell.

Based on this, in an embodiment, the handover confirmation message may also include information about non-anchor cells.

In practical application, the first base station may send relevant information of the non-anchor cell to the terminal through the handover command, so that the terminal can continue data transmission on the corresponding non-anchor cell, for example, in a specified The system information is received at the time domain and/or frequency domain location.

Based on this, in an embodiment, the handover command may also include information about non-anchor cells.

Here, the relevant information of the non-anchor cell may include at least one of the following:

The identification of the non-anchor cell;

Frequency points of non-anchor cells;

Resource information for receiving information in non-anchor cells;

the latest system information;

The identity used by the terminal in the non-anchor cell;

key information.

In actual application, in step 103, the relevant information of the target anchor cell may include at least one of the following:

The relevant identification of the target anchor cell;

The frequency point of the target anchor cell;

Resource information for receiving information in the target anchor cell;

the latest system information;

The identity used by the terminal in the target anchor cell;

key information.

In practical applications, the relevant identifier of the target anchor cell may include PCI, etc., which is not limited in this embodiment of the present application.

In practical application, the first base station may notify the target cell that the anchor cell of the terminal will be handed over to the target anchor cell through signaling carrying the relevant identifier of the target anchor cell.

In actual application, after the terminal receives the handover command, it can replace the relevant information of the anchor cell, that is, use the relevant information of the target anchor cell to update the relevant information of the source anchor cell, since the terminal has obtained Related resources of the target anchor cell are obtained, so the terminal does not need to initiate a random access procedure to the target anchor cell.

In practical applications, the specific timing at which the first base station notifies the target anchor cell that the anchor cell of the terminal will switch to the target anchor cell may be set according to requirements. Exemplarily, the first base station may notify the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell before or after sending the handover command to the terminal, or Before or after the terminal changes the relevant information of the anchor cell, the terminal notifies the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell.

In practical application, for the scenario where the base station of the source anchor cell initiates a handover request, the base station of the source anchor cell needs to send the relevant identifier of the target anchor cell to the base station of the non-anchor cell.

Based on this, in an embodiment, when the first base station includes a base station of an anchor cell, the method may further include:

In practical applications, the specific timing for the first base station to send the third information can be set according to requirements. Exemplarily, the first base station may send the third information to the base station where the non-anchor cell of the terminal is located before or after sending the handover command to the terminal, or when the terminal changes the anchor cell Before or after the information, the third information is sent to the base station where the non-anchor cell of the terminal is located.

In one embodiment, the method may also include:

Specifically, in an embodiment, the exchanging at least one non-anchor cell of respective anchors with the base station of at least one candidate anchor cell may include:

The base station of the at least one candidate anchor cell interacts with at least one non-anchor cell of the respective anchor during an interface establishment process or a configuration update process.

Here, the specific interaction manner between the first base station and the base station of at least one candidate anchor cell during the interface establishment process or configuration update process can be set according to requirements.

Exemplarily, the first base station and the base station of the candidate anchor cell may carry relevant identification information of at least one non-anchor cell of their respective anchors in an interface establishment or configuration update message.

Correspondingly, the embodiment of the present application also provides a handover method applied to the second base station (that is, the base station of the target anchor cell), as shown in FIG. 2 , the method includes:

Step 201: An anchor cell of a terminal notified by the first base station will be handed over to a target anchor cell; wherein, an anchor cell anchors at least one non-anchor cell.

In one embodiment, the method may also include:

Step 200: Receive a handover request message sent by the first base station, and send a handover confirmation message to the first base station;

Here, the handover request message is used to request to switch the anchor cell for the terminal; the handover request message at least includes an identifier of a non-anchor cell currently serving the terminal and a corresponding measurement result.

In one embodiment, the method may also include:

Specifically, in an embodiment, exchanging at least one non-anchor cell of respective anchors with at least one base station may include:

Interacting with at least one base station with at least one non-anchor cell of respective anchors during an interface establishment process or a configuration update process.

Here, it should be noted that: the specific processing procedure of the second base station has been described in detail above, and will not be repeated here.

The embodiment of the present application also provides a communication method, which is applied to a base station (such as the first base station and the second base station), and the method includes:

Wherein, in an embodiment, the at least one non-anchor cell interacting with at least one base station may include:

At least one non-anchor cell of the respective anchor interacts with at least one base station during an interface establishment procedure or a configuration update procedure.

Here, it should be noted that: the specific processing procedure of the base station has been described in detail above, and will not be repeated here.

In the handover method provided by the embodiment of the present application, the first base station determines that the terminal needs to switch the anchor cell; an anchor cell anchors at least one non-anchor cell; selects the target anchor cell from at least one candidate anchor cell; The terminal sends a handover command and notifies the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, and the handover command includes at least information about the target anchor cell. The solution of the embodiment of the present application realizes handover of a terminal between elastic cells in a scenario where an anchor cell is anchored by at least one non-anchor cell, that is, in an elastic cell scenario.

At the same time, in the embodiment of the present application, a working mechanism in which the terminal does not replace the non-anchor cell but only the anchor cell during the handover process is implemented, thereby ensuring that the data plane of the terminal does not fall into the pit during the handover process (that is, the data plane is kept rate), so as not to affect the service experience of the terminal.

In order to implement the method on the side of the first base station in the embodiment of the present application, the embodiment of the present application also provides a switching device, which is set on the first base station, as shown in FIG. 3 , the device includes:

The first processing unit 301 is configured to determine that the terminal needs to switch the anchor cell; an anchor cell has at least one non-anchor cell;

The second processing unit 302 is configured to select a target anchor cell from at least one candidate anchor cell;

The first sending unit 303 is configured to send a handover command to the terminal, and notify the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, and the handover command includes at least the target anchor cell Information about the anchor cell.

Wherein, in an embodiment, the second processing unit 302 is further configured to:

In an embodiment, the first processing unit 301 is further configured to determine that the terminal needs to switch the anchor cell and not replace the non-anchor cell; the target anchor cell is at least currently anchored by the The non-anchor cell where the terminal provides services.

In an embodiment, the apparatus further includes a first interaction unit configured to interact with the base station of at least one candidate anchor cell with at least one non-anchor cell anchored respectively.

Wherein, in an embodiment, the first interaction unit is further configured to interact with at least one non-anchor cell of each anchor during an interface establishment process or a configuration update process with a base station of at least one candidate anchor cell.

In an embodiment, the first base station includes a base station of an anchor cell; the first sending unit 303 is further configured to send third information to a base station where a non-anchor cell of the terminal is located, and the third The information represents the relevant identity of the target anchor cell.

In actual application, the first processing unit 301, the second processing unit 302, and the first interaction unit can be implemented by a processor in the switching device combined with a communication interface; the first sending unit 303 can be implemented by a Communication interface implementation.

In order to implement the method on the side of the second base station in the embodiment of the present application, the embodiment of the present application also provides a switching device, which is set on the second base station, as shown in FIG. 4 , the device includes:

The receiving unit 401 is configured to receive notification from the first base station that the terminal's anchor cell will be handed over to a target anchor cell; wherein, an anchor cell anchors at least one non-anchor cell.

In an embodiment, the receiving unit 401 is further configured to receive a handover request message sent by the first base station; the handover request message is used to request to switch the anchor cell for the terminal; the handover request message includes at least the current An identifier of a non-anchor cell serving the terminal and a corresponding measurement result;

The apparatus further includes a second sending unit 402 configured to send a handover confirmation message to the first base station.

In an embodiment, the apparatus further includes a second interaction unit configured to interact with at least one base station with at least one non-anchor cell of each anchor.

Wherein, in an embodiment, the second interaction unit is further configured to interact with at least one non-anchor cell of each anchor during an interface establishment process or a configuration update process with at least one base station.

In practical application, the receiving unit 401 and the second sending unit 402 may be realized by a communication interface in the switching device; the second interaction unit may be realized by a processor in the switching device combined with a communication interface.

It should be noted that: when the handover device provided in the above-mentioned embodiment performs anchor cell handover, the division of the above-mentioned program modules is used as an example for illustration. In practical applications, the above-mentioned processing allocation can be completed by different program modules according to needs. , that is, divide the internal structure of the device into different program modules, so as to complete all or part of the processing described above. In addition, the switching device and the switching method embodiments provided in the above embodiments belong to the same idea, and the specific implementation process thereof is detailed in the method embodiments, and will not be repeated here.

In order to implement the communication method of the embodiment of the present application, the embodiment of the present application also provides a communication device, which is set on the base station, and the device includes:

Wherein, in an embodiment, the interaction unit is further configured to interact with at least one non-anchor cell of each anchor during an interface establishment process or a configuration update process with at least one base station.

In actual application, the interaction unit may be implemented by a communication interface in the communication device.

It should be noted that when the communication device provided in the above-mentioned embodiment interacts with at least one base station, the division of the above-mentioned program modules is used as an example for illustration. In practical applications, the above-mentioned processing allocation can be completed by different program modules according to needs. That is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the communication device and the communication method embodiments provided in the above embodiments belong to the same idea, and the specific implementation process is detailed in the method embodiments, and will not be repeated here.

Based on the hardware implementation of the above program modules, and in order to implement the method on the first base station side of the embodiment of the present application, the embodiment of the present application also provides a first base station, as shown in FIG. 5 , the first base station 500 includes:

The first communication interface 501 is capable of exchanging information with the second base station;

The first processor 502 is connected to the first communication interface 501 to implement information interaction with the second base station, and is used to execute the methods provided by one or more technical solutions on the first base station side when running the computer program. Instead, the computer program is stored on the first memory 503 .

Specifically, the first processor 502 is configured to determine that the terminal needs to switch anchor cells; an anchor cell anchors at least one non-anchor cell; and selects a target anchor cell from at least one candidate anchor cell The first communication interface 501 is configured to send a handover command to the terminal, and notify the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, and the handover command includes at least Relevant information of the target anchor cell;

or,

The first communication interface 501 is configured to exchange at least one non-anchor cell of each anchor with at least one base station.

Wherein, in an embodiment, the first communication interface 501 is further configured as:

The first processor 502 is further configured to select a cell from at least one candidate anchor cell as the target anchor cell.

In an embodiment, the first processor 502 is further configured to determine that the terminal needs to switch the anchor cell and not replace the non-anchor cell; the target anchor cell is at least currently anchored by the The non-anchor cell where the terminal provides services.

In an embodiment, the first communication interface 501 is further configured to interact with the base station of at least one candidate anchor cell with at least one non-anchor cell anchored respectively.

In an embodiment, the first communication interface 501 is further configured to interact with at least one non-anchor cell of each anchor during an interface establishment process or a configuration update process with a base station of at least one candidate anchor cell.

In an embodiment, the first base station includes a base station of an anchor cell; the first communication interface 501 is further configured to send third information to a base station where a non-anchor cell of the terminal is located, and the third The information represents the relevant identity of the target anchor cell.

It should be noted that: the specific processing procedures of the first communication interface 501 and the first processor 502 can be understood with reference to the above methods.

Of course, in practical applications, various components in the first base station 500 are coupled together through the bus system 504 . It can be understood that the bus system 504 is used to realize connection and communication between these components. In addition to the data bus, the bus system 504 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 504 in FIG. 5 .

The first memory 503 in this embodiment of the present application is used to store various types of data to support operations of the first base station 500 . Examples of such data include: any computer programs for operating on the first base station 500 .

The methods disclosed in the foregoing embodiments of the present application may be applied to the first processor 502 or implemented by the first processor 502 . The first processor 502 may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the first processor 502 or an instruction in the form of software. The aforementioned first processor 502 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The first processor 502 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in 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 may be located in a storage medium, and the storage medium is located in the first memory 503, and the first processor 502 reads the information in the first memory 503, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the first base station 500 may be implemented by one or more Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), complex programmable logic device ( CPLD, Complex Programmable Logic Device), field-programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or others Electronic components are implemented for performing the aforementioned method.

Based on the hardware implementation of the above program modules, and in order to implement the method on the second base station side of the embodiment of the present application, the embodiment of the present application also provides a second base station. As shown in FIG. 6, the second base station 600 includes:

The second communication interface 601 is capable of exchanging information with the first base station;

The second processor 602 is connected to the second communication interface 601 to implement information interaction with the first base station, and is used to execute the methods provided by one or more technical solutions on the second base station side when running the computer program. Instead, the computer program is stored on the second memory 603 .

Specifically, the second communication interface 601 is configured to receive notification from the first base station that the anchor cell of the terminal will switch to the target anchor cell; an anchor cell anchor has at least one non-anchor cell

or,

The second communication interface 601 is configured to exchange at least one non-anchor cell of each anchor with at least one base station.

In an embodiment, the second communication interface 601 is further configured as:

Sending a handover confirmation message to the first base station.

In an embodiment, the second communication interface 601 is further configured to interact with at least one non-anchor cell of each anchor during an interface establishment process or a configuration update process with at least one base station.

It should be noted that: the specific processing procedures of the second communication interface 601 and the second processor 602 can be understood with reference to the above methods.

Of course, in practical applications, various components in the second base station 600 are coupled together through the bus system 604 . It can be understood that the bus system 604 is used to realize connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 604 in FIG. 6 .

The second memory 603 in the embodiment of the present application is used to store various types of data to support operations connected to the second base station 600 . Examples of such data include: any computer programs for operating on the second base station 600 .

The methods disclosed in the foregoing embodiments of the present application may be applied to the second processor 602 or implemented by the second processor 602 . The second processor 602 may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the second processor 602 or an instruction in the form of software. The aforementioned second processor 602 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The second processor 602 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in 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 may be located in a storage medium, and the storage medium is located in the second memory 603, and the second processor 602 reads the information in the second memory 603, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the second base station 600 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general processors, controllers, MCUs, Microprocessors, or other electronic components for performing the aforementioned methods.

It can be understood that the memory (the first memory 503 and the second memory 603 ) in this embodiment of the present application may be a volatile memory or a nonvolatile memory, and may also include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory) Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface storage can be disk storage or tape storage. The volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM, Static Random Access Memory), Synchronous Static Random Access Memory (SSRAM, Synchronous Static Random Access Memory), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Link Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory ). The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application also provides a handover system, as shown in FIG. 7 , the system includes: a terminal 701 , a first base station 702 and a second base station 703 .

Here, it should be noted that: the specific processing procedures of the terminal 701, the first base station 702, and the second base station 703 have been described in detail above, and will not be repeated here.

In an exemplary embodiment, the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 503 storing a computer program, and the above computer program can be used by the first base station The first processor 502 of 500 is executed to complete the steps described in the aforementioned first base station side method. For another example, it includes the second memory 603 storing computer programs, and the above computer programs can be executed by the second processor 602 of the second base station 600 to complete the steps described in the foregoing method on the side of the second base station. The computer-readable storage medium can be memories such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

It should be noted that: "first", "second", etc. are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence.

In addition, the technical solutions described in the embodiments of the present application may be combined arbitrarily if there is no conflict.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application.

Claims

A handover method, applied to a first base station, comprising:

Determine that the terminal needs to switch the anchor cell; an anchor cell has at least one non-anchor cell;

selecting a target anchor cell from at least one candidate anchor cell;

Sending a handover command to the terminal, and notifying the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, where the handover command includes at least information about the target anchor cell.
The method according to claim 1, wherein said selecting a target anchor cell from at least one candidate anchor cell comprises:

Sending a handover request message to the base station of at least one candidate anchor cell; the handover request message at least includes an identifier of a non-anchor cell currently serving the terminal and corresponding measurement results;

receiving a handover confirmation message sent by the base station of at least one candidate anchor cell;

Selecting a cell from at least one candidate anchor cell as the target anchor cell.
The method according to claim 2, wherein the handover confirmation message at least includes relevant information of candidate anchor cells.
The method according to claim 3, wherein the relevant information of the candidate anchor cell includes at least one of the following:

The identification of the candidate anchor cell;

The frequency point of the candidate anchor cell;

Resource information for receiving information in candidate anchor cells;

Up-to-date system information;

The identifier used by the terminal in the candidate anchor cell;

Key information.
The method according to claim 3, wherein the handover confirmation message further includes relevant information of non-anchor cells.
The method of claim 2, wherein,

The handover confirmation message includes at least first information, and the first information indicates that the terminal does not need to change the non-anchor cell.
The method according to claim 1, wherein it is determined that the terminal needs to switch the anchor cell without changing the non-anchor cell; the target anchor cell at least has a non-anchor currently serving the terminal point cell; the handover command further includes second information, and the second information instructs the terminal not to change a non-anchor cell.
The method according to claim 1, wherein the handover command further includes relevant information of non-anchor cells.
The method according to claim 1, wherein the method further comprises:

The at least one non-anchor cell of the respective anchor interacts with the base station of the at least one candidate anchor cell.
The method of claim 9, wherein,

The base station of the at least one candidate anchor cell interacts with at least one non-anchor cell of the respective anchor during an interface establishment process or a configuration update process.
The method according to any one of claims 1 to 10, wherein the first base station includes a base station of an anchor cell or a base station of a non-anchor cell.
The method according to any one of claims 1 to 10, wherein the first base station comprises a base station of an anchor cell; the method further comprises:

Sending third information to the base station where the non-anchor cell of the terminal is located, where the third information represents the relevant identity of the target anchor cell.
A handover method applied to a second base station, comprising:

The anchor cell of the terminal receiving the notification from the first base station will be handed over to the target anchor cell; wherein, an anchor cell is anchored by at least one non-anchor cell.
The method according to claim 13, wherein the method further comprises:

Receiving a handover request message sent by the first base station; the handover request message is used to request to switch the anchor cell for the terminal; the handover request message at least includes the identity of the non-anchor cell currently serving the terminal and the corresponding the measurement results;

Sending a handover confirmation message to the first base station.
The method according to claim 14, wherein the handover confirmation message at least includes relevant information of candidate anchor cells.
The method according to claim 15, wherein the relevant information of the candidate anchor cell includes at least one of the following:

The identification of the candidate anchor cell;

The frequency point of the candidate anchor cell;

Resource information for receiving information in candidate anchor cells;

Up-to-date system information;

The identifier used by the terminal in the candidate anchor cell;

Key information.
The method according to claim 15, wherein the handover confirmation message further includes relevant information of non-anchor cells.
The method according to claim 14, wherein the handover confirmation message includes at least first information, and the first information indicates that the terminal does not need to change the non-anchor cell.
The method according to claim 11, wherein the method further comprises:

At least one non-anchor cell of a respective anchor interacts with at least one base station.
The method of claim 19, wherein,

At least one non-anchor cell of the respective anchor interacts with at least one base station during an interface establishment procedure or a configuration update procedure.
The method according to any one of claims 13 to 20, wherein the first base station includes a base station of an anchor cell or a base station of a non-anchor cell.
A communication method, applied to a base station, comprising:

At least one non-anchor cell of a respective anchor interacts with at least one base station.
The method of claim 22, wherein,

Interacting with at least one base station with at least one non-anchor cell of respective anchors during an interface establishment process or a configuration update process.
A switching device comprising:

The first processing unit is configured to determine that the terminal needs to switch the anchor cell; an anchor cell has at least one non-anchor cell;

A second processing unit configured to select a target anchor cell from at least one candidate anchor cell;

The first sending unit is configured to send a switching command to the terminal, and notify the target anchor cell that the anchor cell of the terminal will switch to the target anchor cell, and the switching command includes at least the target anchor cell Click on the relevant information of the district.
A switching device comprising:

The receiving unit is configured to receive notification from the first base station that the anchor cell of the terminal will be handed over to the target anchor cell; wherein, one anchor cell anchors at least one non-anchor cell.
A communication device comprising:

The interaction unit is configured to interact with at least one base station with at least one non-anchor cell of each anchor.
A first base station, comprising: a first communication interface and a first processor; wherein,

The first processor is configured to determine that the terminal needs to switch anchor cells; an anchor cell anchors at least one non-anchor cell; and selects a target anchor cell from at least one candidate anchor cell; the second A communication interface, configured to send a handover command to the terminal, and notify the target anchor cell that the anchor cell of the terminal will be handed over to the target anchor cell, and the handover command includes at least the target anchor cell Information about the community;

or,

The first communication interface is configured to exchange at least one non-anchor cell of each anchor with at least one base station.
A second base station, comprising: a second communication interface and a second processor; wherein,

The second communication interface is configured to receive notification from the first base station that the anchor cell of the terminal will switch to the target anchor cell; an anchor cell has at least one non-anchor cell;

or,

The second communication interface is configured to exchange at least one non-anchor cell of each anchor with at least one base station.
A first base station comprising: a first processor and a first memory configured to store a computer program capable of running on the processor,

Wherein, the first processor is configured to execute the steps of the method of any one of claims 1 to 12, or execute the steps of the method of claim 22 or 23 when running the computer program.
A second base station comprising: a second processor and a second memory configured to store a computer program executable on the processor,

Wherein, the second processor is configured to execute the steps of the method of any one of claims 13 to 21, or execute the steps of the method of claim 22 or 23 when running the computer program.
A storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 12 are realized, or the steps of the method according to any one of claims 13 to 21 are realized steps, or the steps for implementing the method of claim 22 or 23.