CN117560731A

CN117560731A - Condition switching method and device, computer storage medium, terminal and network equipment

Info

Publication number: CN117560731A
Application number: CN202210938539.6A
Authority: CN
Inventors: 徐敏
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2024-02-13

Abstract

A method and a device for conditional switching, a computer storage medium, a terminal and a network device, wherein the method comprises the following steps: receiving first information, wherein the first information comprises condition switching information of a plurality of auxiliary cells, and the condition switching information comprises configuration information and/or triggering conditions; executing conditional switching to access a first target secondary cell, wherein the first target secondary cell is selected from the plurality of secondary cells; after the first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is still stored in the terminal, wherein the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells. By the scheme provided by the application, the signaling overhead of the conditional switching process can be reduced.

Description

Condition switching method and device, computer storage medium, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for conditional switching, a computer storage medium, a terminal, and a network device.

Background

In the protocol version 16 (Release 16, R16) of the New Radio (NR), a conditional handover (Conditional Handover, CHO) mechanism is introduced. In the CHO mechanism, configuration information and trigger conditions (Trigger Condition) of one or more alternative cells are configured to User Equipment (UE) in advance, and when the trigger conditions are met, the UE may initiate a random access procedure in a target cell and notify an original base station to release the connection of the UE after accessing the target cell.

The conditional switching mechanism may be used in a dual-connection (Dual Connectivity, abbreviated as DC) scenario, where the UE is communicatively connected to two base stations, one of which is a Master Node (MN), and the other is a Secondary Node (SN), and the UE may receive signaling and data from and send signaling and data to both base stations.

In the prior art, in the process of performing conditional switching in a dual-connection state, signaling overhead is large, and delay is easily caused to be large.

Disclosure of Invention

The technical problem to be solved by the embodiment of the application is as follows: how to reduce the signaling overhead in the condition switching process and reduce the time delay.

In order to solve the above technical problem, in a first aspect, an embodiment of the present application provides a conditional switching method, where the method is applied to a terminal, and includes: receiving first information, wherein the first information comprises condition switching information of a plurality of auxiliary cells, and the condition switching information comprises configuration information and/or triggering conditions; executing conditional switching to access a first target secondary cell, wherein the first target secondary cell is selected from the plurality of secondary cells; after the first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is still stored in the terminal, wherein the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

Optionally, the first information further includes: and the first indication information is used for indicating the condition switching information of the alternative auxiliary cell to be reserved after the first target auxiliary cell is accessed.

Optionally, the plurality of secondary cells belong to the same conditional switching group, and the first information includes: group identification information and/or primary and secondary base station identification information, wherein the group identification information is used for indicating the conditional switching group, and the primary and secondary base station identification information is used for indicating the primary and secondary base stations of the conditional switching group.

Optionally, performing the conditional handover to access the first target secondary cell includes: and sending the group identification information and/or the main and auxiliary base station identification information to a main base station or executing an instruction of group condition switching.

Optionally, the first information further includes: and the second indication information is used for indicating the primary and secondary base stations to be PDCP anchor points of the conditional switching group.

Optionally, the method further comprises: and deleting the condition switching information of the alternative auxiliary cell when the cell of the main and auxiliary base stations is released or the signal quality of the cell of the main and auxiliary base stations is smaller than a first threshold value or the signal quality of the cell of the condition switching group is smaller than a second threshold value.

Optionally, the method further comprises: when a second target auxiliary cell meets the triggering condition, sending third indication information to the main auxiliary base station, wherein the third indication information is used for indicating the second target auxiliary cell; wherein the second target secondary cell is selected from the alternative secondary cell.

Optionally, sending the third indication information to the primary and secondary base stations includes: and sending the third indication information to the first target auxiliary cell.

Optionally, the method further comprises: and receiving fourth indication information, wherein the fourth indication information is used for indicating to delete the condition switching information of the alternative auxiliary cell.

In a second aspect, an embodiment of the present application provides a conditional switching method, where the method is applied to a first network device, and includes: transmitting first information, the first information comprising: the method comprises the steps of first indication information and condition switching information of a plurality of secondary cells, wherein the condition switching information comprises configuration information and/or triggering conditions; the first indication information is used for indicating that after a first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is reserved, the first target auxiliary cell is selected from the plurality of auxiliary cells, and the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

Optionally, the method further comprises: and receiving the group identification information and/or the primary and secondary base station identification information from the terminal or performing an indication of group condition handover.

Optionally, the method further comprises: and sending an auxiliary cell adding request or an auxiliary cell changing request to the main and auxiliary base stations.

Optionally, the method further comprises: and sending fourth indication information, wherein the fourth indication information is used for indicating to delete the condition switching information of the alternative auxiliary cell.

In a third aspect, embodiments of the present application provide a further conditional switching method, where the method is applied to a second network device, and includes: transmitting first information, wherein the first information comprises first indication information and condition switching information of a plurality of secondary cells in a condition switching group, and the condition switching information comprises configuration information and/or triggering conditions; the first indication information is used for indicating that after a first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is reserved, the first target auxiliary cell is selected from the plurality of auxiliary cells, and the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

Optionally, the first information further includes: group identification information and/or primary and secondary base station identification information, wherein the group identification information is used for indicating the conditional switching group, and the primary and secondary base station identification information is used for indicating the primary and secondary base stations of the conditional switching group.

Optionally, the method further comprises: a secondary cell addition request or a secondary cell change request is received from a primary base station.

In a fourth aspect, an embodiment of the present application provides a condition switching device, including: the receiving module is used for receiving first information, wherein the first information comprises condition switching information of a plurality of secondary cells, and the condition switching information comprises configuration information and/or triggering conditions; the switching module is used for executing conditional switching to access a first target auxiliary cell, wherein the first target auxiliary cell is selected from the plurality of auxiliary cells; after the first target auxiliary cell is accessed, the condition switching information of the alternative auxiliary cell is still stored in the terminal, wherein the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

In a fifth aspect, embodiments of the present application provide another condition switching device, including: the first sending module is configured to send first information, where the first information includes: the method comprises the steps of first indication information and condition switching information of a plurality of secondary cells, wherein the condition switching information comprises configuration information and/or triggering conditions; the first indication information is used for indicating that after a first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is reserved, the first target auxiliary cell is selected from the plurality of auxiliary cells, and the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

In a sixth aspect, embodiments of the present application provide a condition switching device, including: the second sending module is used for sending first information, wherein the first information comprises first indication information and condition switching information of a plurality of auxiliary cells in a condition switching group, and the condition switching information comprises configuration information and/or triggering conditions; the first indication information is used for indicating that after a first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is reserved, the first target auxiliary cell is selected from the plurality of auxiliary cells, and the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

In a seventh aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any one of the conditional switching methods provided in the first to third aspects.

In an eighth aspect, an embodiment of the present application provides a terminal, including a memory and a processor, where the computer program is executed by the processor, so that the conditional access method provided in the first aspect is performed.

In a ninth aspect, an embodiment of the present application provides a network device, including a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the conditional switching method provided in the second aspect when the processor executes the computer program.

In a tenth aspect, an embodiment of the present application provides a network device, including a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the conditional switching method provided in the third aspect when the processor executes the computer program.

Compared with the prior art, the technical scheme of the embodiment of the application has the following beneficial effects:

In the technical scheme, after the terminal accesses the first target auxiliary cell, the terminal reserves the condition switching information of the alternative auxiliary cell. By adopting the scheme, the terminal can continuously evaluate whether the alternative auxiliary cell meets the triggering condition according to the triggering condition of the alternative auxiliary cell, and when any one alternative auxiliary cell meets the triggering condition, the terminal can directly switch according to the configuration information of the alternative auxiliary cell. Therefore, the terminal adopting the scheme does not need to repeatedly request the condition switching information of the auxiliary cell from the main base station for a plurality of times, and the signaling interaction flow is simplified, so that the signaling overhead is reduced, and the time delay in the condition switching is reduced.

Further, in the scheme of the embodiment of the application, a main and an auxiliary base station are set in the conditional switching group, and the main base station communicates with other auxiliary base stations in the conditional switching group through the main and the auxiliary base stations. By adopting the scheme, the problem of untimely switching caused by no direct connection interface between the target auxiliary base station and the main base station is avoided, and the risk of call drop is reduced.

Drawings

Fig. 1 is an application scenario diagram of a conditional switching method according to an embodiment of the present application;

FIG. 2 is a schematic flow chart of a conditional switching method according to an embodiment of the present application;

FIG. 3 is a flow chart of another method for conditional access according to an embodiment of the present application;

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

FIG. 5 is a schematic diagram of another condition switching device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a condition switching device according to another embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal in an embodiment of the present application.

Detailed Description

Specifically, the communication system applicable to the embodiment of the present application includes, but is not limited to, a third generation system (3 th-generation, abbreviated as 3G), a long term evolution (long term evolution, abbreviated as LTE) system, a fourth generation system (4 th-generation, abbreviated as 4G), a fifth generation (5 th-generation, abbreviated as 5G) system (such as a New Radio (NR) system), and a future evolution system or multiple communication convergence systems. The 5G system may be a non-independent Networking (NSA) 5G system or an independent networking (SA) 5G system. The scheme of the embodiment of the application can be also applied to various new communication systems in the future, such as 6G, 7G and the like.

A terminal in an embodiment of the present application may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote terminal, a Mobile device, a User terminal, a terminal device (Terminal Equipment), a wireless communication device, a User agent, or a User apparatus. The terminal may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved public land mobile network (Public Land Mobile Network, PLMN) or the like, to which embodiments of the present application are not limited. In some embodiments of the present application, the terminal device may also be a device with a transceiver function, such as a chip system. The chip system may include a chip and may also include other discrete devices.

The network device in the embodiments of the present application is a device that provides a wireless communication function for a terminal, and may also be referred to as an access network device, a radio access network (radio access network, abbreviated as RAN) device, or an access network element, where the network device may support at least one wireless communication technology, such as LTE, NR, and so on. For example, the network device may be a Base Station (BS) (also referred to as a base station device), the device providing the base station function in the second generation (2 nd-generation, 2G) network includes a base radio transceiver station (base transceiver station, BTS) and the device providing the base station function in the third generation (3 rd-generation, 3G) network includes a Node B (Node B), the device providing the base station function in the fourth generation (4 th-generation, 4G) network includes an evolved Node B (eNB), the device providing the base station function in the wireless local area network (wireless local area networks, WLAN) is an Access Point (AP), the device providing the base station function in NR, the next generation base station Node (next generation Node base station, gNB) and the Node B continuing to evolve (ng-eNB), wherein the Node B and the terminal device communicate using NR technology, and the Node B and the terminal device communicate using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) and the Node B can connect to the core network (utran) and the Node B, G-nb and the core technology. The network device in the embodiment of the present application also includes a device that provides a base station function in a new communication system in the future, and the like. In some embodiments, the network device may also be an apparatus, such as a system-on-a-chip, having the functionality to provide wireless communication for the terminal. By way of example, the chip system may include a chip, and may include other discrete devices.

As described in the background art, in the process of performing the conditional handover in the dual-connection state, the signaling overhead is large, and the delay is easily caused to be large.

Referring to fig. 1, fig. 1 is an application scenario schematic diagram of a conditional switching method in an embodiment of the present application.

As shown in fig. 1, a plurality of base stations are deployed in the surrounding environment of the UE, the UE accesses a certain cell (denoted as primary cell) of the primary base station MN, and the UE may move in a cell covered by a plurality of alternative secondary base stations (e.g., SN1, SN2, SN3, or SN 4).

Taking the cell covered by the SN1 as the secondary cell currently accessed by the UE as an example, before the UE performs the conditional handover, the MN may configure configuration information and trigger conditions of cells of a plurality of alternative secondary base stations (for example, SN2, SN3, and SN 4) to the UE, where the UE uses the cell of SN2 as the target secondary cell, and after the UE performs the conditional handover to access the target secondary cell, the UE generally deletes the configuration information and trigger conditions of other alternative secondary cells.

As the UE moves, for example, the UE moves from the cell covered by SN2 to the cell covered by SN4 through SN1 and SN3, the UE requests the configuration information and the handover conditions of the multiple alternative secondary cells from MN again, and MN reconfigures the configuration information and the touch components of the cells of the multiple alternative secondary base stations (for example, SN3 and SN 4) to the UE, so that the UE performs the present conditional handover. It follows that the conditional handover information of the alternative secondary cell covered by SN3 and SN4 is repeatedly configured a plurality of times.

In the above-mentioned prior art, before each time of performing the conditional handover, the UE requests configuration information and trigger conditions of a plurality of alternative secondary cells from the primary cell, and after taking one of the secondary cells as a target secondary cell and accessing the target secondary cell, the UE deletes the configuration information and trigger conditions of other alternative secondary cells. The primary cell needs to reconfigure the condition switching information of a plurality of alternative secondary cells to the UE every time, thus causing a great deal of signaling overhead and easily generating larger time delay.

In order to solve the technical problem, an embodiment of the present application provides a conditional switching method, in a solution of the embodiment of the present application, after a terminal accesses a first target secondary cell, a condition switching information of an alternative secondary cell is reserved. By adopting the scheme, the terminal can continuously evaluate whether the alternative auxiliary cells meet the triggering conditions according to the triggering conditions of the reserved alternative auxiliary cells, and when any one of the alternative auxiliary cells meets the triggering conditions, the terminal can directly switch according to the configuration information of the alternative auxiliary cells. Therefore, by adopting the scheme, the terminal does not need to repeatedly request the condition switching information of the auxiliary cell from the main base station for a plurality of times, thereby simplifying the signaling interaction flow, reducing the signaling overhead and being beneficial to reducing the time delay of the condition switching.

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.

The conditional switching method provided by the embodiment of the application can be suitable for a double-connection scene. Specifically, the first network device and the second network device provide services for the terminal at the same time. The first network device may be a primary network device, and the second network device may be a secondary network device. More specifically, the first network device may be a primary base station and the second network device may be a secondary base station. The "primary cell" referred to herein is a cell of a primary base station, and the "secondary cell" refers to a cell of a secondary base station.

The embodiments of the present application do not limit the type of dual connection, and the dual connection may be a long term evolution LTE dual connection, an LTE and NR dual connection, an NR dual connection, and so on. For dual connectivity of LTE and NR, it may include EN-DC (i.e., LTE base station as a primary base station of UE, NR base station as a secondary base station of UE), NE-DC (i.e., NR base station as a primary base station of UE, LTE base station as a secondary base station of UE), ngan-DC (i.e., LTE base station connected to 5G core network as a primary base station of UE, NR base station as a secondary base station of UE), etc.

The conditional switching method provided by the embodiment of the application can be applied to the change (Conditional PSCell Change, CPC) of the conditional primary and secondary cells (Primary Secondary Cell, PSCell for short) or the addition (Conditional PSCell Addition, CPA) of the conditional primary and secondary cells. The embodiments of the present application are not limited in this regard.

Referring to fig. 2, fig. 2 is a schematic data interaction diagram of a conditional switching method in an embodiment of the present application. The condition switching method shown in fig. 2 may include steps S21 to S24. The steps are described in detail below.

In step S21, the master base station transmits the first information to the terminal.

In a specific implementation, the first information may be sent by a primary cell, where the primary cell is a cell of a primary base station to which the terminal accesses.

Wherein the first information may include: conditional handover information for a plurality of secondary cells. The plurality of secondary cells may be cells of one secondary base station or cells of a plurality of secondary base stations. More specifically, the secondary cell may be a cell of one or more secondary base stations near the location of the terminal. For example, in fig. 1 the plurality of secondary cells may be secondary cells of SN1, SN2, SN3, and SN 4. The secondary cell herein refers to an alternative secondary cell, that is, a secondary cell or a primary secondary cell to which the terminal may be handed over or added, and may be a neighboring cell of the primary cell or a neighboring cell associated with the primary cell. The auxiliary base station refers to an alternative auxiliary base station, and may be a neighboring base station of the main cell where the terminal is located.

Further, the condition switching information may include configuration information and a trigger condition. The configuration information may include radio parameters etc. for the terminal to access the cell. That is, the terminal may perform random access according to configuration information of each secondary cell to access the secondary cell.

The triggering condition may include an event triggering the terminal to switch to the secondary cell, and the event may include an A3 event and/or an A5 event. Wherein, the A3 event is an offset amount where the signal quality of the neighbor Cell is higher than the signal quality of a Special Cell (SpCell for short) by a predetermined amount, and the A5 event is that the signal quality of the SpCell is less than or equal to a threshold 1 (threshold 1) and the signal quality of the neighbor Cell is greater than or equal to a threshold 2 (threshold 2). It should be noted that the triggering condition may also include other events, for example, an A4 event and/or a B1 event, which is not limited in this embodiment.

Further, the condition switching information may further include: one or more measurement parameters (e.g., may be SMTC, etc.) that are used to characterize the signal quality of the cell.

Further, the first information may further include first indication information, where the first indication information is used to indicate the terminal to reserve the conditional handover information of the alternative secondary cell. It should be noted that, when the terminal receives the first indication information, the terminal may keep the received condition switching information of the secondary cell.

In step S22, the terminal evaluates whether the secondary cell satisfies the trigger condition.

In an implementation, the terminal may measure the signal quality of each secondary cell. In particular implementations, the signal quality may be characterized by one or more of the following parameters: reference signal received power (Reference Signal Receiving Power, RSRP for short), reference signal received quality (Reference Signal Receiving Quality, RSRQ for short), signal-to-interference and noise ratio (Signal to Interference plus Noise Ratio, SINR for short), and the like.

When the signal quality of a certain auxiliary cell meets the triggering condition of the auxiliary cell, the terminal can take the auxiliary cell as a first target auxiliary cell, and a base station to which the first target auxiliary cell belongs can be recorded as a first target auxiliary base station.

Step S23, the terminal executes conditional switching to access the first target auxiliary cell.

Specifically, the terminal may report the first target secondary cell to the primary base station, and send an RRC reconfiguration complete message. Further, the primary base station may forward the RRC reconfiguration complete message to the first target secondary base station.

Further, the terminal may initiate random access in the first target secondary cell to access the first target secondary cell. In a specific example, the first target secondary cell may be a PSCell.

Further, if the terminal is connected with the secondary cell before the conditional handover, the primary base station may also notify the source secondary cell to release the UE context, etc.

As for more contents of the condition switching performed in step S23, reference may be made to the signaling flow in the existing condition switching procedure, which is not limited in this embodiment.

Step S24, the terminal reserves the condition switching information of the alternative auxiliary cell.

Specifically, after finishing the current condition switching, the terminal reserves the condition switching information of the alternative auxiliary cell. The alternative secondary cell refers to at least a part of other secondary cells except the first target secondary cell among the plurality of secondary cells. It should be noted that, unlike the "alternative secondary cell" mentioned above, the alternative secondary cell herein refers to at least a part of other secondary cells than the first target secondary cell among the plurality of secondary cells in the first information.

It should be noted that, in the solution of the embodiment of the present application, the terminal may also reserve the condition switching information of the first target secondary cell. Or after the terminal accesses the first target auxiliary cell, the auxiliary base station corresponding to the first target auxiliary cell can configure updated configuration information of the first target auxiliary cell to the terminal, and after the terminal receives the updated configuration information of the first target auxiliary cell, the terminal can also keep the latest configuration information of the first target auxiliary cell.

It should be further noted that, in the solution of the embodiment of the present application, the term "reserved" refers to a persistent (e.g., storage or cache, etc.), and is not deleted or discarded.

In a specific example, the candidate secondary cell may be all secondary cells except the first target secondary cell in the above-mentioned multiple secondary cells, that is, the terminal may retain the condition handover information of all secondary cells except the condition handover information of the first target secondary cell in the first information.

In another specific example, the candidate secondary cell may be a portion of the plurality of secondary cells other than the first target secondary cell. For example, the terminal may select one or more secondary cells from other secondary cells as alternative secondary cells according to signal quality of other secondary cells except the first target secondary cell. Therefore, the terminal can keep the condition switching information of the alternative auxiliary cells and delete the condition switching information of the auxiliary cells except the alternative auxiliary cells in other auxiliary cells.

It should be noted that, the duration of the terminal for reserving the conditional handover information of the candidate secondary cell is at least greater than a first threshold, where the first threshold may be predefined. For example, the terminal may at least retain the conditional handover information of the alternative secondary cell until the next time the conditional handover is performed. The content of the more terminal reservation condition switching information may be described with reference to fig. 3, and will not be described herein.

Further, the terminal can evaluate whether any alternative auxiliary cell meets the trigger condition according to the trigger condition of the alternative auxiliary cell, and when any alternative auxiliary cell meets the trigger condition, the terminal can directly switch according to the configuration information of the alternative auxiliary cell. Therefore, the terminal adopting the scheme does not need to repeatedly request the condition switching information of the auxiliary cell from the main base station for a plurality of times, and the signaling interaction flow is simplified, so that the signaling overhead is reduced, and the time delay in the condition switching is reduced.

In the condition switching process, the main base station needs to perform signaling or data interaction with the base station corresponding to the target auxiliary cell, however, in some scenes, the base station of the target auxiliary cell which the terminal expects to access may not have a direct connection interface with the main base station, and in this case, the switching is not timely easily caused, and the call drop situation occurs. Therefore, the embodiment of the application provides another conditional switching method, which can improve the timeliness of switching.

Referring to fig. 3, fig. 3 is a schematic data interaction diagram of another conditional switching method in an embodiment of the present application. The condition switching method shown in fig. 3 may include S31 to S36

In step S31, the master base station transmits first information to the terminal.

As described above, the first information may include conditional handover information of a plurality of secondary cells.

In one example, multiple secondary cells may belong to the same conditional handover group. Wherein the plurality of secondary cells may be cells of different secondary base stations.

Accordingly, the first information may further include: group identification information and/or primary and secondary base station identification information, wherein the group identification information is used for indicating a conditional switching group to which a plurality of secondary cells belong, and the primary and secondary base station identification information is used for indicating a primary and secondary base station of the conditional switching group. In the solution of the embodiment of the present application, the primary and secondary base stations may also be referred to as the second base station.

In another example, multiple secondary cells may belong to different conditional handover groups.

Accordingly, the first information may include identification information of a plurality of conditional access groups and/or primary and secondary base station identification information of each conditional access group. Wherein the secondary cells belonging to the same conditional switching group carry the same group identification information.

It should be noted that the same secondary cell may also belong to different conditional access groups. In this case, the secondary cell may carry group identification information and/or primary-secondary base station identification information for each conditional access group to which it belongs.

Further, after receiving the first information, the terminal may determine, according to the first information, a condition switching group to which each secondary cell belongs, and may also determine a primary secondary base station corresponding to each secondary cell, that is, a primary secondary base station of the condition switching group to which the secondary cell belongs.

Specifically, the primary and secondary base stations may be secondary base stations in the conditional access group that are directly connected to the primary base station. I.e. there is a direct connection interface between the primary and secondary base stations. In other words, the primary and secondary base stations can communicate directly with the primary base station without forwarding by a third party communication device.

In a specific implementation, the primary and secondary base stations may be selected by the primary base station from secondary base stations corresponding to a plurality of secondary cells. Alternatively, the primary and secondary base stations may be preconfigured by the core network. The present embodiment is not limited thereto.

In a specific example, the primary and secondary base station identification information included in the first information may be a cond reconfigid of a cell of the primary and secondary base stations. In other words, the terminal may determine, according to the cond reconfigid of the cell, that the base station corresponding to the cell is the primary and secondary base stations.

In a specific example, the primary and secondary base stations may be configured as PDCP anchors of a conditional handover group. The PDCP anchor point refers to a base station where a packet data convergence protocol (packet data convergence protocol, abbreviated PDCP) entity is located. Correspondingly, the first information may further include second indication information, where the second indication information is used to indicate a PDCP anchor point of the terminal primary and secondary base stations that are a conditional handover group.

And under the condition that the main and auxiliary base stations are PDCP anchor points of the conditional switching group, forwarding data interaction between the main base station and other auxiliary base stations except the main and auxiliary base stations in the conditional switching group through the main and auxiliary base stations. It should be noted that, the random access procedure is still performed at other secondary base stations, and does not pass through the primary and secondary base stations.

In another specific example, the primary and secondary base stations may not be configured as PDCP anchors for the conditional handover group. Specifically, if the base station of the target auxiliary cell selected by the terminal has a direct connection interface with the main base station, data forwarding is not required through the main base station and the auxiliary base station; if the base station of the target auxiliary cell has no direct connection interface with the main base station, the main and auxiliary base stations forward the data.

In a specific implementation, the first information may be sent by a secondary base station (for example, a primary secondary base station or other secondary base stations having a direct interface with the primary base station) in the conditional access group to the primary base station.

Specifically, the primary base station may send a secondary cell update request to one or more secondary base stations. In the case of CPA, the secondary cell update Request may be a secondary cell Addition Request (Addition Request). In the CPC scenario, the secondary cell update Request may be a secondary cell Change Request (Change Request).

Further, the secondary base station receiving the secondary cell update request may determine a conditional switch group and send the secondary cell update request to one or more secondary base stations within the conditional switch group. After receiving the condition switching information of the cells (i.e., secondary cells) of one or more secondary base stations in the condition switching group, the condition switching information of the secondary cells in the condition switching group may be transmitted to the primary base station.

Thus, the primary base station may receive the conditional handover information for the secondary cells of one or more conditional handover groups.

In other embodiments, the first information may be preconfigured to the primary base station by the core network, which is not limited in this embodiment.

Further, after the primary base station transmits the first information to the terminal, the primary base station may delete the first information, that is, the primary base station forwards only the first information to the terminal. Alternatively, the master base station may also retain at least a portion of the first information. For example, the primary base station may retain primary and secondary base station identification information of the conditional access group, may retain group identification information of the conditional access group, and may retain identification information of at least a portion of secondary base stations in the conditional access group.

In step S32, the terminal evaluates whether the secondary cell satisfies the trigger condition.

For the evaluation process, reference may be made to the above detailed description of step S22, and the detailed description thereof will be omitted.

Step S33, the terminal reports the first target auxiliary cell to the main base station and sends the second information.

The first target secondary cell refers to a secondary cell that satisfies the triggering condition in step S32, that is, the first target secondary cell is a secondary cell to which the current execution condition is switched and is expected to access. The first target secondary cell may be a secondary cell in any one of the conditional access groups in the first information.

It should be noted that, the first target secondary cell may be a cell of the primary and secondary base stations, or may not be a cell of the primary and secondary base stations but a cell of the conditional access group where the primary and secondary base stations are located.

In a specific example, the second information may include: group identification information and/or primary and secondary base station identification information.

Specifically, after receiving the second information, the primary base station may determine, according to the second information, a conditional access group to which the first target secondary cell belongs, and/or may determine the primary and secondary base stations of the conditional access group to which the first target secondary cell belongs. In this case, the master base station may not need to store information of the conditional handover group.

In a specific example, the second information may include a cond reconfigid of a cell of the primary and secondary base stations corresponding to the first target secondary cell, and the terminal may notify the primary base station to perform the group condition handover through the cond reconfigid, and/or the primary and secondary base stations corresponding to the first target secondary cell.

In another specific example, the second information may include: indication of group conditional switching. And under the condition that the main base station stores the information of the conditional switching group, after the main base station receives the indication of the group conditional switching, the main base station can determine the conditional switching group corresponding to the first target auxiliary cell and/or determine the main auxiliary base station of the conditional switching group to which the first target auxiliary cell belongs.

In an implementation, the first target secondary cell and the second information may be carried in an RRC reconfiguration complete message. That is, the terminal sends an RRC reconfiguration complete message to the master base station, where the RRC reconfiguration complete message carries one or more of the following information: the method comprises the steps of a first target auxiliary cell, group identification information, auxiliary base station identification information and an indication of group condition switching.

It should be noted that, if the first target secondary cell and the second information do not carry RRC reconfiguration complete messages, in step S35, the terminal needs to send an RRC reconfiguration complete message to the primary base station.

In step S34, the primary base station transmits an RRC reconfiguration complete message to the primary and secondary base stations.

Step S35, the primary and secondary base stations send an RRC reconfiguration complete message to the first target secondary base station.

By performing step S34 and step S35, an RRC reconfiguration complete message may be transmitted to the first target secondary base station.

Step S36, the terminal randomly accesses to the first target auxiliary cell.

Specifically, the terminal performs random access to access the first target secondary cell.

After the terminal accesses the first target auxiliary cell, the condition switching information of the alternative auxiliary cell in the condition switching group is not deleted, so that other auxiliary cells in the group can be accessed more conveniently later. That is, in the scheme shown in fig. 3, the alternative secondary cell may refer to at least a part of other alternative secondary cells in the conditional handover group than the first target secondary cell. Or after the terminal accesses the first target auxiliary cell, the terminal may also retain the condition switching information of the first target auxiliary cell, or may retain the latest configuration information of the first target auxiliary cell.

Further, the terminal may continue to evaluate whether the alternative secondary cell within the conditional access group meets the trigger criteria and perform the next conditional access when the trigger criteria are met.

When the second target auxiliary cell meets the triggering condition, the terminal can send third indication information to the main auxiliary base station, wherein the third indication information can be used for indicating the second target auxiliary cell. In an implementation, the third indication information may be carried in RRC reconfiguration complete information.

In one example, the terminal may send third indication information to the primary base station, for example, may send an RRC reconfiguration complete message to the primary base station through SRB1 signaling, where the RRC reconfiguration complete message carries the third indication information. Further, the master base station sends the third indication information to the master and auxiliary base stations. After receiving the third indication information, the primary and secondary base stations can send an RRC reconfiguration complete message to the second target secondary base station, so that the terminal accesses the second target secondary cell. By adopting the scheme, the main base station can be made to know the second target auxiliary base station, so that the measurement capability and the measurement cell range of the terminal can be coordinated and configured between the main base station and the second target auxiliary base station.

In another example, the terminal may send third indication information to the first target secondary cell, for example, may send an RRC reconfiguration complete message to the first target secondary cell through SRB3 signaling, where the RRC reconfiguration complete message carries the third indication information. Further, the first target secondary cell sends third indication information to the primary and secondary base stations. By adopting the scheme, the third indication information is not required to be sent to the main base station, so that frequent path switching and key updating can be avoided, and data retransmission is facilitated.

In yet another example, after the primary and secondary base stations receive the third indication information from the first target secondary cell, the third indication information may be forwarded to the primary base station so as to coordinate configuration of measurement capabilities and measurement cell ranges of the terminal between the primary base station and the second target secondary base station.

The following describes the condition for the terminal to delete the condition handover information of the alternative secondary cell.

In one example, the primary base station may send fourth indication information to the terminal, where the fourth indication information is used to indicate to delete the conditional handover information of the candidate secondary cell. After receiving the fourth indication information, the terminal may delete the reserved conditional switching information. Wherein the fourth indication information may be used to delete the condition switching information of a part of the condition switching groups in the first information. Alternatively, the fourth instruction information may be used to instruct deletion of all the condition switching group condition switching information in the first information. Alternatively, the fourth indication information may be used to indicate that the conditional access information of at least a part of the secondary cells in a conditional access group is deleted.

In another example, when it is detected that the cell of the primary and secondary base stations is released, or the signal quality of the cell of the primary and secondary base stations is smaller than a first threshold value, the conditional handover information of the alternative secondary cell is deleted.

Specifically, the release of the cells of the primary and secondary base stations means that the primary base station notifies the terminal to delete the cells of the primary and secondary base stations. After receiving the indication of deleting the cell of the primary and secondary base stations sent by the primary and secondary base stations, the terminal can delete the reserved condition switching information of the alternative secondary cell, or can delete the condition switching information of the condition switching group where the primary and secondary base stations sending the deletion indication are located.

Or when the terminal detects that the cell signal quality of the primary and secondary base stations is smaller than the first threshold value, the terminal can actively delete the reserved condition switching information of the alternative secondary cell. Or, the condition switching information in the condition switching group where the primary and secondary base stations with the signal quality smaller than the first threshold value are located can be deleted.

More specifically, the condition switching information may be deleted when the signal quality of all the cells of the primary and secondary base stations is smaller than a first threshold value, or the condition switching information of the candidate secondary cell may be deleted when the number of cells of the primary and secondary base stations whose signal quality is smaller than the first threshold value reaches a second threshold value. The first threshold value and the second threshold value may be preconfigured, or may be predefined by a protocol.

In yet another example, when it is detected that the signal quality of the cell of any one of the conditional access groups is less than the second threshold value, the conditional access information of the reserved candidate secondary cell is deleted. Alternatively, the condition switching information of the condition switching group may be deleted.

More specifically, the condition switching information may be deleted when the signal quality of all the cells in the condition switching group is smaller than the first threshold value, or the condition switching information of the candidate secondary cell in the condition switching group may be deleted when the number of cells with the signal quality smaller than the first threshold value reaches the third threshold value.

It will be appreciated that in a specific implementation, the method may be implemented in a software program running on a processor integrated within a chip or a chip module; alternatively, the method may be implemented in hardware or a combination of hardware and software, for example, implemented in a dedicated chip or chip module, or implemented in a dedicated chip or chip module in combination with a software program.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a conditional switching apparatus in an embodiment of the present application, where the conditional switching apparatus shown in fig. 4 may be disposed in the terminal, and the apparatus shown in fig. 4 may include:

a receiving module 41, configured to receive first information, where the first information includes condition switching information of a plurality of secondary cells, and the condition switching information includes configuration information and/or a triggering condition;

a handover module 42, configured to perform a conditional handover to access a first target secondary cell, where the first target secondary cell is selected from the plurality of secondary cells;

After the first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is still stored in the terminal, wherein the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

In a specific implementation, the condition switching device may correspond to a chip having a communication function in the terminal; or corresponds to a chip or a chip module having a communication function included in the terminal, or corresponds to the terminal.

Referring to fig. 5, fig. 5 is a schematic structural diagram of another conditional switching apparatus in the embodiment of the present application, where the conditional switching apparatus shown in fig. 5 may be deployed on the first network device, and more specifically, may be deployed on the above-mentioned master base station. The apparatus shown in fig. 5 may include:

a first sending module 51, configured to send first information, where the first information includes: the method comprises the steps of first indication information and condition switching information of a plurality of secondary cells, wherein the condition switching information comprises configuration information and/or triggering conditions;

the first indication information is used for indicating that after a first target auxiliary cell is accessed, the condition switching information of an alternative auxiliary cell is reserved, the first target auxiliary cell is selected from the plurality of auxiliary cells, and the alternative auxiliary cell refers to at least one part of other auxiliary cells except the first target auxiliary cell in the plurality of auxiliary cells.

Referring to fig. 6, fig. 6 is a schematic structural diagram of still another conditional access apparatus in the embodiment of the present application, and the apparatus for data transmission shown in fig. 6 may be deployed on a second network device, and more specifically, may be deployed on the above-mentioned primary and secondary base stations. The apparatus shown in fig. 6 may include:

a second sending module 61, configured to send first information, where the first information includes first indication information and condition switching information of a plurality of secondary cells in a condition switching group, and the condition switching information includes configuration information and/or a triggering condition;

In a specific implementation, the condition switching apparatus shown in fig. 5 or fig. 6 may correspond to a chip having a communication function in the network device; or corresponds to a chip or a chip module including a communication function in the network device, or corresponds to the network device.

For more matters such as the working principle, the working method and the beneficial effects of the conditional access apparatus in the embodiments of the present application, reference may be made to the above description about the method of the conditional access apparatus, which is not repeated here.

The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, performs the above-described conditional switching method. The storage medium may include ROM, RAM, magnetic disk or optical disk, etc. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory memory (non-transitory) or the like.

The embodiment of the application also provides a terminal, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps of the condition switching method when running the computer program. The terminal comprises, but is not limited to, a mobile phone, a computer, a tablet personal computer and other terminal equipment. The terminal may be a mobile phone, a computer, a tablet computer, a vehicle-mounted terminal, a wearable device, etc., but is not limited thereto.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a terminal in an embodiment of the present application. The terminal shown in fig. 7 comprises a memory 71 and a processor 72, the processor 72 being coupled to the memory 71, the memory 71 being either located inside the terminal or outside the terminal. The memory 71 and the processor 72 may be connected by a communication bus. The memory 71 has stored thereon a computer program executable on the processor 72, which processor 72 executes the steps of the conditional switching method provided by the above embodiment when it is executed.

The embodiment of the application also provides a network device, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps of the data transmission method when running the computer program. The network device may be the master base station described above.

The embodiment of the application also provides another network device, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps of the data transmission method when running the computer program. The network device may be the above-mentioned primary and secondary base stations.

The structure of the network device may be described with reference to fig. 7, and will not be described herein.

It should be appreciated that in the embodiments of the present application, the processor may be a central processing unit (central processing unit, abbreviated as CPU), and the processor may also be other general purpose processors, digital signal processors (digital signal processor, abbreviated as DSP), application specific integrated circuits (application specific integrated circuit, abbreviated as ASIC), off-the-shelf programmable gate arrays (field programmable gate array, abbreviated as FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically erasable ROM (electrically EPROM, EEPROM), or a flash memory. The volatile memory may be a random access memory (random access memory, RAM for short) which acts as an external cache. By way of example, and not limitation, many forms of random access memory (random access memory, RAM) are available, such as static RAM, dynamic RAM, synchronous DRAM, SDRAM, DDR SDRAM, advanced SDRAM, synchronous DRAM, SLDRAM, and direct memory bus RAM direct rambus RAM.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired or wireless means from one website, computer, server, or data center.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, and system may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal, each module/unit included in the device, product, or application may be implemented by using hardware such as a circuit, different modules/units may be located in the same component (for example, a chip, a circuit module, or the like) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) part of the modules/units may be implemented by using hardware such as a circuit.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, etc., which can store program codes.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments herein refers to two or more.

The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order division is used, nor does it indicate that the number of the devices in the embodiments of the present application is particularly limited, and no limitation on the embodiments of the present application should be construed.

Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention shall be defined by the appended claims.

Claims

1. A conditional switching method, wherein the method is applied to a terminal and comprises:

receiving first information, wherein the first information comprises condition switching information of a plurality of auxiliary cells, and the condition switching information comprises configuration information and/or triggering conditions;

executing conditional switching to access a first target secondary cell, wherein the first target secondary cell is selected from the plurality of secondary cells;

2. The conditional handoff method of claim 1, wherein the first information further comprises: and the first indication information is used for indicating the condition switching information of the alternative auxiliary cell to be reserved after the first target auxiliary cell is accessed.

3. The conditional access method of claim 1, wherein the plurality of secondary cells belong to a same conditional access group, and the first information comprises: group identification information and/or primary and secondary base station identification information, wherein the group identification information is used for indicating the conditional switching group, and the primary and secondary base station identification information is used for indicating the primary and secondary base stations of the conditional switching group.

4. The conditional handoff method of claim 3, wherein performing conditional handoff to access the first target secondary cell comprises:

and sending the group identification information and/or the main and auxiliary base station identification information to a main base station or executing an instruction of group condition switching.

5. The conditional handoff method of claim 3, wherein said first information further comprises: and the second indication information is used for indicating the primary and secondary base stations to be PDCP anchor points of the conditional switching group.

6. A conditional handoff method according to claim 3, further comprising:

and deleting the condition switching information of the alternative auxiliary cell when the cell of the main and auxiliary base stations is released or the signal quality of the cell of the main and auxiliary base stations is smaller than a first threshold value or the signal quality of the cell of the condition switching group is smaller than a second threshold value.

7. A conditional handoff method according to claim 3, further comprising:

when a second target auxiliary cell meets the triggering condition, sending third indication information to the main auxiliary base station, wherein the third indication information is used for indicating the second target auxiliary cell;

wherein the second target secondary cell is selected from the alternative secondary cell.

8. The conditional handoff method of claim 7, wherein transmitting third indication information to the primary and secondary base stations comprises:

and sending the third indication information to the first target auxiliary cell.

9. The conditional handoff method of claim 1, further comprising:

and receiving fourth indication information, wherein the fourth indication information is used for indicating to delete the condition switching information of the alternative auxiliary cell.

10. A method of conditional switching, the method being applied to a first network device and comprising:

transmitting first information, the first information comprising: the method comprises the steps of first indication information and condition switching information of a plurality of secondary cells, wherein the condition switching information comprises configuration information and/or triggering conditions;

11. The conditional access method of claim 10, wherein the plurality of secondary cells belong to a same conditional access group, and the first information comprises: group identification information and/or primary and secondary base station identification information, wherein the group identification information is used for indicating the conditional switching group, and the primary and secondary base station identification information is used for indicating the primary and secondary base stations of the conditional switching group.

12. The conditional handoff method of claim 11, wherein the first information further comprises: and the second indication information is used for indicating the primary and secondary base stations to be PDCP anchor points of the conditional switching group.

13. The conditional handoff method of claim 11, further comprising:

and receiving the group identification information and/or the primary and secondary base station identification information from the terminal or performing an indication of group condition handover.

14. The conditional handoff method of claim 11, further comprising:

and sending an auxiliary cell adding request or an auxiliary cell changing request to the main and auxiliary base stations.

15. The conditional handoff method of claim 10, further comprising:

And sending fourth indication information, wherein the fourth indication information is used for indicating to delete the condition switching information of the alternative auxiliary cell.

16. A method of conditional handover, the method being applied to a second network device, comprising:

transmitting first information, wherein the first information comprises first indication information and condition switching information of a plurality of secondary cells in a condition switching group, and the condition switching information comprises configuration information and/or triggering conditions;

17. The conditional handoff method of claim 16, wherein the first information further comprises: group identification information and/or primary and secondary base station identification information, wherein the group identification information is used for indicating the conditional switching group, and the primary and secondary base station identification information is used for indicating the primary and secondary base stations of the conditional switching group.

18. The conditional handoff method of claim 17, wherein the first information further comprises: and the second indication information is used for indicating the primary and secondary base stations to be PDCP anchor points of the conditional switching group.

19. The conditional handoff method of claim 16, further comprising:

and receiving a secondary cell addition request or a secondary cell change request from the primary base station.

20. A condition switching device, comprising:

the receiving module is used for receiving first information, wherein the first information comprises condition switching information of a plurality of secondary cells, and the condition switching information comprises configuration information and/or triggering conditions;

the switching module is used for executing conditional switching to access a first target auxiliary cell, wherein the first target auxiliary cell is selected from the plurality of auxiliary cells;

21. A condition switching device, comprising:

the first sending module is configured to send first information, where the first information includes: the method comprises the steps of first indication information and condition switching information of a plurality of secondary cells, wherein the condition switching information comprises configuration information and/or triggering conditions;

22. A condition switching device, comprising:

the second sending module is used for sending first information, wherein the first information comprises first indication information and condition switching information of a plurality of auxiliary cells in a condition switching group, and the condition switching information comprises configuration information and/or triggering conditions;

23. A computer readable storage medium having stored thereon a computer program, which, when executed by a processor, causes the conditional switching method of any of claims 1 to 19 to be performed.

24. A terminal comprising a memory and a processor, said memory having stored thereon a computer program executable on said processor, characterized in that said processor executes the steps of the conditional switching method according to any of claims 1 to 9 when said computer program is executed.

25. A network device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the conditional switching method of any of claims 10 to 15 when the computer program is executed.

26. A network device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the conditional switching method of any of claims 16 to 19 when the computer program is executed.