CN116208977A

CN116208977A - Switching configuration method, system, base station and storage medium

Info

Publication number: CN116208977A
Application number: CN202111453623.0A
Authority: CN
Inventors: 刘胜楠; 蒋峥; 佘小明
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2023-06-02

Abstract

The disclosure provides a switching configuration method, a switching configuration system, a base station and a storage medium, and relates to the technical field of wireless communication. The method comprises the following steps: under the condition that the source base station determines that the terminal configures a CHO (Chinese character) and a DAPS (DAPS) HO mode simultaneously, sending a switching request message to each candidate base station, wherein the switching request message comprises first configuration information for configuring DRB (digital radio resource block) of the CHO and the DAPS HO modes; receiving a switching request response message sent by each candidate base station, wherein the switching request response message comprises second configuration information indicating that a CHO and DAPS HO mode is accepted; and sending a radio resource control reconfiguration message to the terminal so that the terminal can select a target base station from the candidate base stations for switching, wherein the radio resource control reconfiguration message comprises third configuration information of DRB configured with CHO and DAPS HO modes. The method and the device meet the requirements of high reliability of the terminal and zero millisecond time delay switching, and improve the service experience of the user in a mobility scene.

Description

Switching configuration method, system, base station and storage medium

Technical Field

The disclosure relates to the technical field of wireless communication, and in particular relates to a handover configuration method, a handover configuration system, a base station and a storage medium.

Background

With the application of higher frequency spectrums of wireless networks, for example, the application of high-frequency millimeter waves or the scene of ultra-dense networking, the coverage area of a base station is smaller and smaller, and users can experience more frequent switching in such a scene. Meanwhile, as wireless network technologies evolve, users have increasingly demanded mobile communication services, and besides traditional voice and internet data services, many services with various QoS (Quality of Service ) requirements have also been generated. For example, remote control, industrial automation, AR (Augmented Reality ), VR (Virtual Reality), and the like, require ultra-high reliability and ultra-low delay. For such services, mobility performance should be guaranteed as much as possible, including increased reliability and reduced interruption latency.

In the standardization work of 3gpp r16, 3gpp RAN2 and RAN3 working groups have studied about the problem of mobility enhancement under NR (New Radio) networks, and two handover modes, CHO (Conditional Handover ) and DAPS HO (Dual Active Protocol Stack Handover, dual protocol stack active handover), are designed and supported.

In the CHO mode, after receiving CHO configuration, the terminal starts to evaluate execution conditions, and when the terminal evaluates that one or more conditions for handover execution are satisfied, the terminal directly triggers a handover execution stage to initiate random access to a target base station. In this way, the reliability of the handover procedure is improved.

In the DAPS HO mode, a user keeps connection with a source base station in the process of synchronizing with a target base station, and after the user successfully accesses the target base station, the user disconnects the source base station. In this way, a zero millisecond delay in the handover process is achieved.

The two handover methods described above have been written in the 3gpp R16 specification, but in the R16 specification, only CHO or DAPS HO configuration alone is supported, and two handover methods are not supported for a certain terminal to be simultaneously configured. Furthermore, CHO is a per-UE level configuration, DAPS HO is a per-DRB (Data Radio Bearer ) level configuration, and there is a difference in signaling configuration. The DAPS HO related configuration in the current RRC (Radio Resource Control ) signaling is carried using a radio bearer configuration cell within which it is indicated which DRBs currently employ the DAPS HO scheme. Whereas CHO configuration is carried using a conditional reconfiguration-r 16 cell, indicating that CHO mode is adopted for the current terminal. The two cells are independent of each other in the rrcrecon configuration signaling, so one RRC configuration cannot be used to indicate which DRBs for each candidate base station have cho+daps configured.

If CHO is configured for the terminal first, then DAPS HO is configured, under CHO, the synchronization process with the target base station is directly triggered by the terminal, before the terminal successfully accesses the target base station, the source base station cannot know the ID of the target base station, so that after CHO is configured, DAPS HO cannot be configured for the target base station, that is, cho+daps HO mode cannot be configured for the terminal through an RRC signaling.

As described above, for ultra-dense networking or high-frequency millimeter wave scenarios, high reliability and zero millisecond delay of the user in the moving process need to be ensured, i.e. the configuration of CHO and DAPS HO needs to be supported simultaneously, however, in the case that two handover modes coexist, the 3GPP RAN working group does not give a reasonable configuration mode and signaling flow, so that a signaling structure and a signaling transmission mode under the handover of high reliability and zero millisecond delay need to be designed.

Disclosure of Invention

The technical problem to be solved by the present disclosure is to provide a handover configuration method, a system, a base station and a storage medium, which can meet the requirements of high reliability and zero millisecond delay handover of users.

According to an aspect of the present disclosure, a handover configuration method is provided, including: under the condition that the terminal is determined to be configured with a conditional switch CHO and a dual-activation protocol stack switch DAPS HO mode, a switch request message is sent to each candidate base station, wherein the switch request message comprises first configuration information for configuring data radio bearers DRB of the CHO and the DAPS HO modes; receiving a switching request response message sent by each candidate base station, wherein the switching request response message comprises second configuration information indicating that a CHO and DAPS HO mode is accepted; and sending a radio resource control reconfiguration message to the terminal so that the terminal can select a target base station from the candidate base stations for switching, wherein the radio resource control reconfiguration message comprises third configuration information of DRB configured with CHO and DAPS HO modes.

In some embodiments, after receiving the handover success message sent by the target base station, the connection with the terminal is disconnected.

In some embodiments, a handover request message is sent to each candidate base station through handover request signaling, where relevant cells of the handover request signaling contain relevant indication information of CHO and DAPS HO, for indicating CHO and DAPS HO modes configured for one or more DRBs.

In some embodiments, the handover request acknowledgement message sent by each candidate base station is received through a handover request acknowledgement signaling, where the relevant cells of the handover request acknowledgement signaling include indication information about whether CHO and DAPS HO modes are accepted.

In some embodiments, a radio resource control reconfiguration message is sent to the terminal through radio resource control reconfiguration signaling, where relevant information elements of the radio resource control reconfiguration signaling include relevant indication information of CHO and DAPS HO, for indicating that one or more DRBs configure CHO and DAPS HO modes.

In some embodiments, the conditional handoff information cell of the handoff request signaling includes a first DRB list cell therein, the first DRB list cell including a DRB identification and DAPS request information.

In some embodiments, the list cells mapped to the qos flow by the DRBs of the handoff request signaling include DAPS request information cells that carry CHO-related information.

In some embodiments, the conditional handoff information element of the handoff request acknowledge signaling includes a second DRB list cell therein, the second DRB list cell including a DRB identification and DAPS response information.

In some embodiments, the DAPS response information element of the handoff request acknowledgement signaling includes CHO-related information.

In some embodiments, the addition list cell of the conditional reconfiguration of the radio resource control reconfiguration signaling includes DAPS configuration related information and DRB addition list information, and the DRB addition list information includes an identifier of a DRB that accepts the DAPS HO mode.

In some embodiments, the DRB addition list cell of radio bearer configuration information for radio resource control reconfiguration signaling includes DAPS-related configuration cells that include conditional handoff-related information.

In some embodiments, after receiving the handoff request response signaling sent by each candidate base station, the data to be transmitted and the corresponding sequence number SN state transfer signaling are sent to each candidate base station.

According to another aspect of the present disclosure, there is also provided a base station including: a request sending unit configured to send a handover request message to each candidate base station when it is determined that the terminal configures both the conditional handover CHO and the dual-activation protocol stack handover DAPS HO, where the handover request message includes first configuration information for configuring a data radio bearer DRB of the CHO and DAPS HO; a response receiving unit configured to receive a handover request response message sent by each candidate base station, where the handover request response message includes second configuration information indicating that CHO and DAPS HO modes are accepted; and an information sending unit configured to send a radio resource control reconfiguration message to the terminal so that the terminal selects the target base station from the candidate base stations for handover, wherein the radio resource control reconfiguration message includes third configuration information of the DRB configured with CHO and DAPS HO modes.

In some embodiments, the base station further comprises: and the terminal switching unit is configured to disconnect the terminal after receiving the terminal switching success message sent by the target base station.

According to another aspect of the present disclosure, there is also provided a base station including: a memory; and a processor coupled to the memory, the processor configured to perform a handover configuration method as described above based on instructions stored in the memory.

According to another aspect of the present disclosure, there is also provided a handover configuration system, including: the first base station is the base station; and the second base station is used as a candidate base station and is configured to send a switching request response message to the first base station, wherein the switching request response message comprises second configuration information for indicating to accept the configuration CHO and DAPS HO modes.

In some embodiments, the switching configuration system further comprises: and the terminal is configured to receive a radio resource control reconfiguration message sent by the first base station, and select a target base station from the candidate base stations to switch according to the radio resource control reconfiguration message, wherein the radio resource control reconfiguration message comprises third configuration information of DRB configured with CHO and DAPS HO modes.

According to another aspect of the disclosure, there is also provided a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement a handover configuration method as described above.

In the embodiment of the disclosure, the source base station sends relevant indication information including CHO and DAPS HO to each candidate base station, which is used for indicating that CHO and DAPS HO modes are configured for one or more DRBs, the candidate base station determines whether to accept a request and feeds back the request to the source base station, and the source base station sends relevant configuration information to the terminal, so that the terminal performs high-reliability and zero-millisecond time delay switching in the moving process, and the service experience of the user in a mobility scene is improved.

Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a flow diagram of some embodiments of a handover configuration method of the present disclosure.

Fig. 2 is a flow chart illustrating other embodiments of a handover configuration method according to the present disclosure.

Fig. 3 is a flow chart illustrating other embodiments of a handover configuration method according to the present disclosure.

Fig. 4 is a schematic structural diagram of some embodiments of a base station of the present disclosure.

Fig. 5 is a schematic structural diagram of other embodiments of a base station of the present disclosure.

Fig. 6 is a schematic structural diagram of other embodiments of a base station of the present disclosure.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.

Fig. 1 is a flow diagram of some embodiments of a handover configuration method of the present disclosure. This embodiment is performed by the source base station.

In step 110, in the case that it is determined that the terminal configures both CHO and DAPS HO modes, a handover request message is sent to each candidate base station, where the handover request message includes first configuration information for configuring the DRBs of CHO and DAPS HO modes.

In some embodiments, in the user switching process, when the source base station decides to use a highly reliable zero millisecond delay switching mode according to the service requirement of the user, a corresponding switching request signaling is sent to the candidate base station. The related information of the handover request signaling contains related indication information of CHO and DAPS HO, which is used for indicating that CHO and DAPS HO modes are configured for one or more DRB.

In step 120, a handover request response message sent by each candidate base station is received, where the handover request response message includes second configuration information indicating that the CHO and DAPS HO modes are accepted.

In some embodiments, the candidate base station decides whether to accept the request and feed back the request to the source base station according to its own resource condition.

In some embodiments, the candidate base station sends a handover request acknowledgement signaling to the source base station, where the relevant cells of the handover request acknowledgement signaling include indication information of whether to accept CHO and DAPS HO modes.

In some embodiments, after receiving the handover request response signaling sent by each candidate base station, the source base station sends data to be transmitted and corresponding SN (sequence number) state transition signaling to each candidate base station.

In step 130, a radio resource control reconfiguration message is sent to the terminal, so that the terminal selects a target base station from the candidate base stations for handover, where the radio resource control reconfiguration message includes third configuration information of DRBs configured with CHO and DAPS HO modes.

In some embodiments, the source base station sends a radio resource control reconfiguration message to the terminal through a radio resource control reconfiguration signaling, where relevant information of CHO and DAPS HO is included in relevant cells of the radio resource control reconfiguration signaling, and is used to indicate that one or more DRBs configure CHO and DAPS HO modes.

In some embodiments, after receiving the related signaling, the terminal continues to monitor the condition for triggering the handover, initiates random access to the target base station when the condition is satisfied, and simultaneously maintains connection with the source base station, and when the terminal successfully accesses to the target base station, the target base station informs the source base station that the terminal has successfully accessed, and at this time, the source base station disconnects from the terminal.

In the above embodiment, the source base station sends the relevant indication information including CHO and DAPS HO to each candidate base station, which is used for indicating that CHO and DAPS HO modes are configured for one or more DRBs, the candidate base station decides whether to accept the request and feeds back to the source base station, and the source base station sends the relevant configuration information to the terminal, so that the terminal performs high-reliability and zero millisecond delay switching in the mobile process, and the service experience of the user in the mobility scenario is improved.

In step 210, the source base station transmits a handover request signaling to each candidate base station.

In this step, the source base station informs the candidate base station through the handover request signaling that the current request is a highly reliable handover with zero millisecond delay, i.e. CHO and DAPS HO are configured simultaneously, indicates on the signaling structure which DRBs are configured for the current terminal CHO and for which DRBs are configured as DAPS HO, and uses conditional handover by default for DRBs not configured as DAPS HO.

In some embodiments, the conditional handoff information cell of the handoff request signaling includes a first DRB list cell therein, the first DRB list cell including a DRB identification and DAPS request information. For example, referring to the 3GPP protocol TS38.423, a DRB list cell is newly added in Conditional Handover Information (conditional Handover information) cells in an Xn interface signaling Handover Request cell, and DRB list cells include DRB IDs and DAPS Request Information for indicating which DRBs are configured with the DAPS HO method for the current terminal.

The Handover Request signaling structure is, for example:

>Handover Request

>>Conditional Handover Information

>>>DRB list

>>>>DRB ID

>>>>DAPS Request Information

in some embodiments, the DRB to QoS Flow Mapping List (DRB mapped to list of quality of service flows) cell of the handoff request signaling includes a DAPS request information cell, which carries CHO related information.

The Handover Request signaling structure is, for example:

>Handover Request

>>DRB to QoS Flow Mapping List

>>>DAPS Request Information

>>>>CHO information

in step 220, each candidate base station feeds back a handover request acknowledgement signaling to the source base station.

In some embodiments, conditional Handover Information cells of Handover Request Acknowledge (handoff request acknowledge) signaling include a second DRB list cell within, the second DRB list cell including a DRB identification and DAPS response information. For example, referring to 3GPP protocol TS38.423, in Xn signaling Handover Request Acknowledge, a DRB list cell is added Conditional Handover Information in which DRB list cell includes DRB IDs and DAPS Response Information for indicating which DRBs are accepted.

The Handover Request Acknowledge signaling structure is, for example:

>Handover Request Acknowledge

>>Conditional Handover Information

>>>DRB list

>>>>DRB ID

>>>>DAPS Response Information

The Handover Request Acknowledge signaling structure is, for example:

>Handover Request Acknowledge

>>DAPS Response Information

>>>CHO information

in step 230, the source base station transmits radio resource control reconfiguration signaling to the terminal.

In some embodiments, the source base station, after receiving feedback from the candidate base station, issues a configuration with high reliability and zero millisecond delay to the terminal through rrcrecon configuration signaling. The condreconfiguratoaddmodlist (addition list of conditional reconfiguration) cell of the rrcrecon configuration signaling includes DAPS configuration related information and DRB addition list information, and the DRB addition list information includes an identifier of the DRB that accepts the DAPS HO mode. For example, referring to the 3GPP protocol TS38.331, in the current rrcrecconfiguration signaling, a cond reconfigurationcell and a DRB-ToAddModList cell are newly added in a cond reconfigurationtoaddmodlist cell, and the DRB-ToAddModList cell contains a DRB ID, where the DRB ID is a DRB ID of each candidate base station that accepts a DAPS request, and by the signaling design described above, it is indicated which DRBs for each candidate base station are configured with CHO and DAPS HO modes at the same time.

The rrcrecon configuration signaling structure is, for example:

>RRCReconfiguration

>>ConditionalReconfiguration

>>>CondReconfigToAddModList

>>>>daps-Config

>>>>DRB-ToAddModList

>>>>>DRB ID

in some embodiments, a DRB-ToAddMod (DRB addition list) cell of the radio bearrerconfig (radio bearer configuration information) of the rrcrecon configuration signaling includes a DAPS related configuration cell, and the DAPS related configuration cell includes conditional handover related information.

The rrcrecon configuration signaling structure is, for example:

>RRCReconfiguration

>>RadioBearerConfig

>>>DRB-ToAddMod

>>>>daps-Config

>>>>>Conditional Config

in step 240, the terminal monitors surrounding candidate base stations, and when a certain candidate base station meets a high threshold, it switches to the target base station, and the connection with the source base station is maintained during the switching execution process.

In step 250, after receiving the handover success message sent by the target base station, the source base station disconnects the connection with the terminal.

In the above embodiment, the enhancement is performed by combining with the existing protocol, so that the network support configures a cho+daps HO mode for the terminal through 1 RRC signaling, thereby meeting the requirements of high reliability and zero millisecond delay switching of the user, and improving the service experience of the user in the mobility scenario.

The present disclosure will be described below by taking a specific embodiment as an example. Fig. 3 is a flow chart illustrating other embodiments of a handover configuration method according to the present disclosure. The embodiment is a data transmission mode under the condition that two candidate base stations exist, and in the practical application scene, the candidate base stations have two or more than two.

In step 310, the source base station transmits a measurement control message (Measurement Control) to the terminal.

In step 320, the terminal transmits a measurement report to the source base station (Measurement Report).

In step 330, the source base station switches decisions (Handover decision).

In step 340, the source base station sends Handover Request (Handover Request) signaling to the candidate base station 1 and the candidate base station 2, where relevant cells of the signaling contain relevant indication information of CHO and DAPS HO, and the relevant indication information is used to indicate CHO and DAPS HO modes configured for one or more DRBs.

The source base station decides whether to configure the CHO and DAPS switching modes for the terminal at the same time according to the service requirement of the user, namely a high-reliability zero millisecond time delay switching mode, and sends the relevant configuration Request to the candidate base station through a Handover Request signaling.

In step 350, the candidate base station 1 and the candidate base station 2 each transmit a handover request response (Handover Request Ack) signaling to the source base station, wherein the relevant cells of the signaling include indication information on whether to accept CHO and DAPS HO methods.

The candidate base station decides whether to accept the request according to the self resource state and feeds back Handover Request Acknowledge signaling.

In step 360, the source base station sends radio resource control reconfiguration information (rrcrecon configuration) signaling to the terminal, where relevant information of CHO and DAPS HO relevant indication information is included in relevant cells of the signaling, to indicate that one or more DRBs configure CHO and DAPS HO modes.

In step 370, the terminal feeds back radio resource control reconfiguration complete information (rrcrecon configuration complete) to the source base station, indicating successful reception of the handover configuration.

In step 380, the source base station transmits advance state transfer signaling (Early Status Transfer) to the candidate base station 1 and the candidate base station 2, and forwards Data (Data forwarding). At this time, the source base station keeps on the connection state with the terminal, and maintains the data transmission process with the terminal.

In step 390, the terminal measures and evaluates the handover execution condition, and if a certain candidate base station satisfies the handover execution condition, triggers the handover execution procedure.

And the UE starts to evaluate the candidate base stations after receiving the configuration information sent by the source base station, and when a certain candidate base station meets the switching execution condition, the terminal directly triggers the switching process to synchronize with the selected target base station.

In step 3100, the terminal transmits synchronization and random access signaling to the candidate base station 1 (Synchronization and random access).

In step 3110, the candidate base station 1 feeds back handover Success (HO Success) to the source base station.

In step 3120, the source base station transmits sequence number state transition signaling to the candidate base station 1 (SN Status Transfer).

In step 3130, the source base station disconnects from the terminal (release connection).

In the above embodiment, the reliability of the user in the switching process can be effectively improved by the new signaling configuration mode, and the zero millisecond interrupt delay of the user in the switching process is ensured.

Fig. 4 is a schematic structural diagram of some embodiments of a base station of the present disclosure. The base station as a source base station includes: a request transmitting unit 410, a response receiving unit 420, and an information transmitting unit 430.

The request transmitting unit 410 is configured to transmit a handover request message to each candidate base station in case that it is determined that the terminal configures both CHO and DAPS HO modes, wherein the handover request message includes first configuration information configuring the DRBs of CHO and DAPS HO modes.

In some embodiments, the request sending unit 410 sends a handover request message to each candidate base station through a handover request signaling, where relevant information of CHO and DAPS HO is included in relevant information elements of the handover request signaling, and is used to designate CHO and DAPS HO modes configured for one or more DRBs.

The response receiving unit 420 is configured to receive a handover request response message sent by each candidate base station, where the handover request response message includes second configuration information indicating that the CHO and DAPS HO modes are accepted.

In some embodiments, the response receiving unit 420 receives a handover request acknowledgement message sent by each candidate base station through a handover request acknowledgement signaling, where the relevant cells of the handover request acknowledgement signaling include indication information about whether CHO and DAPS HO modes are accepted.

The information sending unit 430 is configured to send a radio resource control reconfiguration message to the terminal, so that the terminal selects a target base station from the candidate base stations for handover, where the radio resource control reconfiguration message includes third configuration information of DRBs configured with CHO and DAPS HO modes.

In some embodiments, the information sending unit 430 is further configured to send the data to be transmitted and the corresponding SN state transfer signaling to each candidate base station after receiving the handover request response signaling sent by each candidate base station.

In some embodiments, the information sending unit 430 sends a radio resource control reconfiguration message to the terminal through radio resource control reconfiguration signaling, where relevant cells of the radio resource control reconfiguration signaling contain relevant indication information of CHO and DAPS HO, for indicating that one or more DRBs configure CHO and DAPS HO modes.

In other embodiments of the present disclosure, as shown in fig. 5, the base station further includes a terminal switching unit 510 configured to disconnect from the terminal after receiving a terminal switching success message sent by the target base station.

Fig. 6 is a schematic structural diagram of other embodiments of a base station of the present disclosure. The base station 600 includes a memory 610 and a processor 620. Wherein: the memory 610 may be a magnetic disk, flash memory, or any other non-volatile storage medium. Memory 610 is used to store instructions in the corresponding embodiments of fig. 1-3. Processor 620, coupled to memory 610, may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 620 is configured to execute instructions stored in the memory.

In some embodiments, processor 620 is coupled to memory 610 through BUS 630. The base station 600 may also be connected to an external storage system 650 via a storage interface 640 for invoking external data, and to a network or another computer system (not shown) via a network interface 660. And will not be described in detail herein.

In this embodiment, the data instruction is stored in the memory, and then the processor processes the instruction, so that the requirement of switching with high reliability and zero millisecond delay for the user can be met.

In other embodiments of the present disclosure, a handover configuration system is protected, where the handover configuration system includes a first base station and a second base station, and the first base station is a base station in the foregoing embodiments, that is, a source base station. And when the second base station is used as a candidate base station, the second base station is configured to send a switching request response message to the first base station, wherein the switching request response message comprises second configuration information for indicating to accept a configuration CHO and DAPS HO mode.

In other embodiments, the handover configuration system further includes a terminal configured to receive a radio resource control reconfiguration message sent by the first base station, and select a target base station from candidate base stations to perform handover according to the radio resource control reconfiguration message, where the radio resource control reconfiguration message includes third configuration information of DRBs configured in CHO and DAPS HO modes.

In other embodiments, a non-transitory computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the steps of the methods of the corresponding embodiments of fig. 1-3. It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Thus far, the present disclosure has been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A handover configuration method, comprising:

under the condition that the terminal is determined to be configured with a conditional switch CHO and a dual-activation protocol stack switch DAPS HO mode, a switch request message is sent to each candidate base station, wherein the switch request message comprises first configuration information for configuring a data radio bearer DRB of the CHO and the DAPS HO modes;

receiving a switching request response message sent by each candidate base station, wherein the switching request response message comprises second configuration information indicating that a CHO (Chinese character) and DAPS (digital video camera) HO mode are accepted; and

and sending a radio resource control reconfiguration message to the terminal so that the terminal can select a target base station from candidate base stations for switching, wherein the radio resource control reconfiguration message comprises third configuration information of DRB configured with CHO and DAPS HO modes.

2. The handover configuration method according to claim 1, further comprising:

and after receiving the switching success message sent by the target base station, disconnecting the terminal.

3. The handover configuration method of claim 1, wherein,

and sending a switching request message to each candidate base station through a switching request signaling, wherein related information cells of the switching request signaling contain related indication information of CHO and DAPS HO, and the related indication information is used for indicating that CHO and DAPS HO modes are configured for one or more DRB.

4. The handover configuration method of claim 1, wherein,

and receiving a switching request confirmation message sent by each candidate base station through a switching request confirmation signaling, wherein the related information element of the switching request confirmation signaling contains indication information of whether to accept a CHO (Chinese character) and DAPS (digital video access) HO mode.

5. The handover configuration method of claim 1, wherein,

and sending a radio resource control reconfiguration message to the terminal through a radio resource control reconfiguration signaling, wherein related information elements of the radio resource control reconfiguration signaling contain related indication information of CHO and DAPS HO, and the information is used for indicating that one or more DRB configures CHO and DAPS HO modes.

6. The handover configuration method according to claim 3, wherein,

the conditional handoff information cell of the handoff request signaling includes a first DRB list cell that includes a DRB identification and DAPS request information.

7. The handover configuration method according to claim 3, wherein,

the list cell of the DRB mapping of the switching request signaling to the service quality stream comprises a DAPS request information cell, wherein the DAPS request information cell carries CHO related information.

8. The handover configuration method of claim 4, wherein,

the conditional handoff information cell of the handoff request acknowledge signaling includes a second DRB list cell, where the second DRB list cell includes a DRB identifier and DAPS response information.

9. The handover configuration method of claim 4, wherein,

the DAPS response information cell of the switching request confirmation signaling comprises CHO related information.

10. The handover configuration method of claim 5, wherein,

the added list cell of the conditional reconfiguration of the radio resource control reconfiguration signaling comprises DAPS configuration related information and DRB added list information, wherein the DRB added list information comprises an identification of DRB which accepts a DAPS HO mode.

11. The handover configuration method of claim 5, wherein,

the DRB adding list cell of the radio bearer configuration information of the radio resource control reconfiguration signaling comprises a DAPS related configuration cell, and the DAPS related configuration cell comprises conditional switching related information.

12. The handover configuration method according to any one of claims 1 to 11, further comprising:

and after receiving the switching request response signaling sent by each candidate base station, sending the data to be transmitted and the corresponding serial number SN state transition signaling to each candidate base station.

13. A base station, comprising:

a request sending unit, configured to send a handover request message to each candidate base station when it is determined that a terminal configures a conditional handover CHO and a dual-activation protocol stack handover DAPS HO mode at the same time, where the handover request message includes first configuration information for configuring a data radio bearer DRB of the CHO and DAPS HO modes;

a response receiving unit, configured to receive a handover request response message sent by each candidate base station, where the handover request response message includes second configuration information indicating that a CHO and DAPS HO mode are accepted; and

and the information sending unit is configured to send a radio resource control reconfiguration message to the terminal so that the terminal can select a target base station from the candidate base stations to switch, wherein the radio resource control reconfiguration message comprises third configuration information of DRB configured with CHO and DAPS HO modes.

14. The base station of claim 13, further comprising:

and the terminal switching unit is configured to disconnect the connection with the terminal after receiving the terminal switching success message sent by the target base station.

15. A base station, comprising:

a memory; and

a processor coupled to the memory, the processor configured to perform the switch configuration method of any of claims 1 to 12 based on instructions stored in the memory.

16. A handover configuration system, comprising:

a first base station, the first base station being a base station as claimed in any one of claims 13 to 15; and

and the second base station is used as a candidate base station and is configured to send a switching request response message to the first base station, wherein the switching request response message comprises second configuration information for indicating to accept a CHO (Chinese character) and DAPS (digital video service) HO mode.

17. The handover configuration system of claim 16, further comprising:

and the terminal is configured to receive a radio resource control reconfiguration message sent by the first base station, and select a target base station from candidate base stations to switch according to the radio resource control reconfiguration message, wherein the radio resource control reconfiguration message comprises third configuration information of DRB configured with CHO and DAPS HO modes.

18. A non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the handover configuration method of any of claims 1 to 12.