CN115942397A - Cell handover, configuration method and device, computer-readable storage medium, user equipment, network equipment - Google Patents

Abstract

A cell handover, configuration method and device, computer-readable storage medium, user equipment, and network equipment, the cell handover method includes: acquiring handover execution conditions corresponding to DAPS handover, the handover execution conditions include a first condition and a second condition, The first condition indicates the requirement for the signal quality of the candidate cell, and the second condition indicates the requirement for the signal quality of the serving cell; measure the signal quality of the candidate cell and the signal quality of the serving cell; if the candidate cell If the signal quality of the serving cell satisfies the first condition, and the signal quality of the serving cell satisfies the second condition, perform DAPS handover to the candidate cell. Through the technical solution of the present invention, it is possible to realize cell switching of UE under the condition of configuring conditional switching and DAPS switching at the same time.

Description

Cell handover, configuration method and device, computer-readable storage medium, user equipment, network equipment

technical field

The present invention relates to the field of communication technology, in particular to a cell switching, configuration method and device, a computer-readable storage medium, user equipment, and network equipment.

Background technique

A conditional switching mechanism is introduced in wireless communication. In the conditional handover mechanism, a user equipment (User Equipment, UE) judges whether a handover execution condition is satisfied, and if the condition is met, the UE uses the configuration parameters of the candidate target cell included in the handover command to access the target cell.

A Dual Active Protocol Stack (DAPS) switch is also introduced in wireless communication. In the traditional handover process, there will always be user plane interruption time, because once the UE receives the handover command, the UE will interrupt the communication with the source base station, and instead synchronize to the target cell and perform the random access process, when the random access is successful After that, the UE can continue to perform data transmission with the target base station, and there is a certain interruption time in between. In order to achieve a handover delay of 0 milliseconds (ms), the newly introduced DAPS handover requires the UE to maintain communication with the source base station and the target base station at the same time during the handover process. During the handover process, the UE waits until the UE has started normal communication with the target cell before releasing the connection with the source base station.

However, in the case of configuring conditional handover and DAPS handover at the same time, how to implement cell handover of UE is a technical problem to be solved urgently.

Contents of the invention

The technical problem solved by the present invention is how to realize cell switching of UE under the condition of configuring conditional switching and DAPS switching at the same time.

In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a cell handover method, the cell handover method includes: acquiring handover execution conditions corresponding to DAPS handover, the handover execution conditions include a first condition and a second condition, and the first condition Indicate the requirement for the signal quality of the candidate cell, the second condition indicates the requirement for the signal quality of the serving cell; measure the signal quality of the candidate cell and the signal quality of the serving cell; if the signal quality of the candidate cell satisfies the required If the first condition is met, and the signal quality of the serving cell satisfies the second condition, perform DAPS handover to the candidate cell.

Optionally, the first condition includes measurement event A3 and/or measurement event A5 and/or measurement event A4, and the second condition includes measurement event A1.

Optionally, the performing DAPS handover to the candidate cell includes: if the signal quality of the candidate cell satisfies the measurement event A3 and/or the measurement event A5 and/or the measurement event A4, and the signal quality of the serving cell If the quality satisfies the measurement event A1, perform DAPS handover to the candidate cell.

Optionally, the first condition includes the measurement event A3 and/or the measurement event A5 and/or the measurement event A4, and the second condition includes the timer T310 not running.

Optionally, the performing DAPS handover to the candidate cell includes: if the signal quality of the candidate cell satisfies the measurement event A3 and/or the measurement event A5 and/or the measurement event A4, and the serving cell does not If the timer T310 is running, the DAPS handover is performed to the candidate cell.

Optionally, the cell switching method further includes: if the signal quality of the candidate cell satisfies the first condition and the signal quality of the serving cell does not meet the second condition, perform switch.

Optionally, the acquiring the handover execution condition corresponding to the DAPS handover further includes: acquiring a data radio bearer for which the DAPS handover needs to be performed.

Optionally, the performing DAPS handover to the candidate cell includes: configuring the PDCP entity of the data radio bearer as a PDCP entity for DAPS handover, and the PDCP entity for DAPS handover can simultaneously process the Data of the serving cell and the candidate cell.

In order to solve the above technical problems, the embodiment of the present invention also discloses a handover configuration method. The handover configuration method includes: configuring handover execution conditions corresponding to DAPS handover, where the handover execution conditions include the first condition, or the handover execution conditions include The first condition and the second condition, the first condition indicates the requirement for the signal quality of the candidate cell, and the second condition indicates the requirement for the signal quality of the serving cell; sending the handover execution condition, the handover execution condition When the signal quality of the target candidate cell satisfies the first condition and the signal quality of the serving cell satisfies the second condition, perform DAPS handover to the candidate cell.

Optionally, the first condition includes measurement event A3 and/or measurement event A5 and/or measurement event A4, and the second condition includes measurement event A1.

Optionally, the first condition includes the measurement event A3 and/or the measurement event A5 and/or the measurement event A4, the second condition includes the non-running timer T310, and the switching execution conditions corresponding to the configured DAPS switching include: The signaling configuring the handover execution condition only includes the first condition.

The embodiment of the present invention also discloses a cell handover device, including: an acquisition module, configured to acquire handover execution conditions corresponding to DAPS handover, the handover execution conditions include a first condition and a second condition, and the first condition indicates the The signal quality requirement of the candidate cell, the second condition indicates the signal quality requirement for the serving cell; the measurement module is used to measure the signal quality of the candidate cell and the signal quality of the serving cell; the handover module is used to measure the signal quality of the serving cell; If the signal quality of the candidate cell satisfies the first condition, and the signal quality of the serving cell satisfies the second condition, perform DAPS handover to the candidate cell.

The embodiment of the present invention also discloses a handover configuration device, including: a configuration module configured to configure handover execution conditions corresponding to DAPS handover, the handover execution conditions include a first condition and a second condition, and the first condition indicates The signal quality requirement of the candidate cell, the second condition indicates the signal quality requirement for the serving cell; the sending module is configured to send the handover execution condition, and the handover execution condition is used to satisfy the signal quality of the target candidate cell in the When the first condition is met and the signal quality of the serving cell satisfies the second condition, perform DAPS handover to the candidate cell.

The embodiment of the present invention also discloses a handover configuration method, which is applied to candidate target base stations. The handover configuration method includes: receiving a handover request indicating a conditional handover request; configuring the first wireless resource configuration for non-DAPS handover and for The second radio resource configuration for DAPS handover;

Send the first radio resource configuration and the second radio resource configuration.

Optionally, the sending the first radio resource configuration and the second radio resource configuration includes: respectively sending the first radio resource configuration and the second radio resource configuration in two independent signalings.

Optionally, the two independent signalings are X2/Xn interface signaling, or newly added signaling.

Optionally, the sending the first radio resource configuration and the second radio resource configuration includes: sending a handover request acknowledgment, where the handover request acknowledgment includes the first radio resource configuration and the second radio resource configuration .

Optionally, the handover request confirmation includes a first transparent container and a second transparent container, the first transparent container stores the first wireless resource configuration, and the second transparent container stores the second wireless resource configuration.

Optionally, the handover request confirmation includes indication information, the indication information indicating that the second transparent container corresponds to DAPS handover, or the indication information indicates that the first transparent container corresponds to non-DAPS handover, and the second transparent container Two transparent containers correspond to DAPS switching.

The embodiment of the present invention also discloses another handover configuration method for the source base station. The handover configuration method includes: sending a handover request, the handover request indicating a conditional handover request; receiving the first wireless resource configuration and the second wireless resource configuration, The first radio resource configuration is for non-DAPS handover, and the second radio resource configuration is for DAPS handover.

Optionally, the handover configuration method further includes: respectively determining conditional handover execution conditions and DAPS handover execution conditions according to the first radio resource configuration and the second radio resource configuration.

Optionally, the sending the handover request includes: determining that the candidate cell applies non-DAPS handover according to the network conditions of the candidate cell, and/or configuring at least one wireless data bearer as DAPS handover; carrying the indication in the handover request The first indication information of the non-DAPS handover, and/or carries the second indication information, where the second indication information indicates the wireless data bearer requesting to perform the DAPS handover.

The embodiment of the present invention also discloses a handover configuration device, which is applied to candidate target base stations. The handover configuration device includes: a handover request receiving module, used to receive a handover request, and the handover request indicates a conditional handover request; a configuration module, used to configure The first radio resource configuration for non-DAPS handover and the second radio resource configuration for DAPS handover;

A resource configuration sending module, configured to send the first wireless resource configuration and the second wireless resource configuration. The embodiment of the present invention also discloses a handover configuration device for a source base station. The handover configuration device includes: a handover request sending module for sending a handover request, the handover request indicating a conditional handover request; a resource configuration receiving module for A first radio resource configuration and a second radio resource configuration are received, the first radio resource configuration is for non-DAPS handover, and the second radio resource configuration is for DAPS handover.

The embodiment of the present invention also discloses a computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of the cell handover method are executed, or the steps of the handover configuration method are executed.

The embodiment of the present invention also discloses a user equipment, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the cell when running the computer program. Steps to switch methods.

The embodiment of the present invention also discloses a network device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the switching when running the computer program Steps to configure the method.

Compared with the prior art, the technical solutions of the embodiments of the present invention have the following beneficial effects:

In the technical solution of the present invention, the UE obtains the handover execution conditions corresponding to DAPS handover, the handover execution conditions include a first condition and a second condition, the first condition indicates the requirement for the signal quality of the candidate cell, and the second condition indicates Requirements for the signal quality of the serving cell; measure the signal quality of the candidate cell and the signal quality of the serving cell; if the signal quality of the candidate cell satisfies the first condition, and the signal quality of the serving cell satisfies the second condition If two conditions exist, perform DAPS handover to the candidate cell. In the technical solution of the present invention, by configuring the first condition and the second condition in the handover execution condition, the UE can perform DAPS handover based on the measurement result and the handover execution condition, and realize the cell handover in the case of simultaneously configuring conditional handover and DAPS handover , which can not only improve the handover success rate but also reduce the handover interruption delay. In addition, in DAPS handover, since the UE needs to maintain communication with the source base station and the target base station at the same time, it is necessary to configure the first condition to ensure the signal quality of the target cell, and configure the second condition to ensure the quality of the serving cell, so as to realize the smooth progress of DAPS handover .

Description of drawings

FIG. 1 is a flow chart of a cell handover method according to an embodiment of the present invention;

FIG. 2 is a flowchart of a handover configuration method according to an embodiment of the present invention;

Fig. 3 is an interactive flowchart of an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a cell handover device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a switch configuration device according to an embodiment of the present invention;

FIG. 6 is a flowchart of another handover configuration method according to an embodiment of the present invention;

Fig. 7 is a flow chart of another handover configuration method according to the embodiment of the present invention.

Detailed ways

As mentioned in the background, in the case of configuring conditional handover and DAPS handover at the same time, how to implement cell handover of UE is a technical problem to be solved urgently.

In the technical solution of the present invention, by configuring the first condition and the second condition in the handover execution condition, the UE can perform DAPS handover based on the measurement result and the handover execution condition, and realize the cell handover in the case of simultaneously configuring conditional handover and DAPS handover , which can not only improve the handover success rate but also reduce the handover interruption delay. In addition, in DAPS handover, since the UE needs to maintain communication with the source base station and the target base station at the same time, it is necessary to configure the first condition to ensure the signal quality of the target cell, and configure the second condition to ensure the quality of the serving cell, so as to realize the smooth progress of DAPS handover .

The Fangming technical solution can be applied to 5G (5Generation) communication systems, 4G, 3G communication systems, and various new communication systems in the future, such as 6G, 7G, etc.

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a flowchart of a cell handover method according to an embodiment of the present invention.

The cell handover method shown in FIG. 1 can be used on the user equipment side, that is, the user equipment can execute various steps of the method. The user equipment includes, but is not limited to, terminal equipment such as mobile phones, computers, and tablet computers.

Specifically, the cell switching method may include the following steps:

Step 101: Obtain a handover execution condition (Handover execution condition) corresponding to DAPS handover, the handover execution condition includes a first condition and a second condition, the first condition indicates a requirement for the signal quality of a candidate cell, and the second condition Indicates the requirements for the signal quality of the serving cell;

Step 102: measuring the signal quality of the candidate cell and the signal quality of the serving cell;

There is no clear order of steps 102 and 101, the user equipment can always measure the candidate cell and the serving cell, and then obtain the handover execution condition corresponding to the DAPS handover from the network side. The serving cell may be the primary cell accessed by the UE, or any serving cell in the carrier aggregation state.

Step 103: If the signal quality of the candidate cell satisfies the first condition and the signal quality of the serving cell satisfies the second condition, perform DAPS handover to the candidate cell.

It should be noted that the sequence numbers of the steps in this embodiment do not represent a limitation on the execution order of the steps.

It can be understood that, in a specific implementation, the cell handover method may be implemented in the form of a software program, and the software program runs in a processor integrated in a chip or a chip module.

In this embodiment, the UE can obtain the handover execution condition from the handover command. The handover execution condition may be a handover execution condition corresponding to the DAPS handover, and the handover execution condition corresponding to the DAPS handover may include a first condition and a second condition. The reason why the first condition and the second condition are set is that for DAPS handover, the UE is required to maintain connection with the source base station and the target base station at the same time, so the signal quality on both sides should not be too bad. That is to say, in addition to the conventional requirements on the signal quality of the candidate cell, it is also necessary to set the signal quality of the serving cell to meet certain requirements.

Specifically, the UE may also acquire the handover execution condition corresponding to the non-DAPS handover from the handover command. The handover execution condition corresponding to the non-DAPS handover may only include the first condition.

Specifically, the UE can also obtain the identity of the candidate cell targeted by the DAPS handover or non-DAPS handover from the handover command. For candidate cell cell1, DRB1 is configured as DAPS handover, and its corresponding handover execution conditions are called DAPS handover execution conditions. At this time, DRB2 and DRB3 can be configured as non-DAPS handover; for candidate cell cell1, the handover execution corresponding to non-DAPS handover can be configured Conditions, that is, the handover execution conditions corresponding to ordinary handover. At this time, all DRBs are not configured for DAPS handover; for other candidate cells such as cell2, if all DRBs are not configured for DAPS handover, then the network configuration at this time corresponds to non-DAPS handover Switch execution conditions.

In the specific implementation of step 102, in response to receiving the handover command, the UE measures the signal quality of the candidate cell and the signal quality of the serving cell, and judges whether the signal quality of the candidate cell satisfies the first condition and whether the signal quality of the serving cell satisfies Second condition. For example, the UE judges whether the signal quality of the candidate target cell is higher than the signal quality of the serving cell by a predetermined offset. The signal quality can have different forms, such as the received power of the reference signal, or the received quality of the reference signal, or the signal-to-interference-noise ratio of the reference signal, and the like.

In the specific implementation of step 103, if the signal quality of the target candidate cell and the signal quality of the serving cell meet the handover execution conditions corresponding to the DAPS handover, the UE performs DAPS handover to the target candidate cell.

Specifically, the UE uses the configuration parameters of the candidate target cell contained in the handover command to access the target cell, obtains synchronization with the target cell, initiates a random access procedure in the target cell, and sends the handover completion command (that is, Radio Resource Control (Radio Resource Control) Control, RRC) after the reconfiguration is completed), the UE implements handover to the target cell. During the handover process, the UE maintains communication with the source base station and the target base station (ie, the base station to which the target cell belongs) at the same time. During the handover process, the UE releases the connection with the source base station after the UE has started normal communication with the target cell and received an instruction to release the source side link sent by the target cell.

The embodiment of the present invention realizes cell handover under the condition of simultaneously configuring conditional handover and DAPS handover, which can not only improve handover success rate but also reduce handover interruption delay.

In a non-limiting embodiment of the present invention, the first condition includes measurement event A3 and/or measurement event A5 and/or measurement event A4, and the second condition includes measurement event A1.

Specifically, the measurement event A3 (Event A3) means that the signal quality of the same-frequency/inter-frequency neighboring cell is higher than the signal quality of the serving cell by a predetermined offset (Neighbour becomes offset better than serving). Measurement event A5 (Event A5) means that the signal quality of the serving cell is lower than threshold 1 and the signal quality of neighboring cells is higher than threshold 2 (Serving becomes worse than threshold1 and neighbor becomes better than threshold2). The measurement event A4 (Event A4) means that the signal quality of inter-frequency neighboring cells is higher than the preset threshold (Neighbour becomes better than threshold). The above measurement event A3, measurement event A5 and measurement event A4 all set requirements for the signal quality of the candidate cell, and the first condition may include one or more of the measurement event A3, measurement event A5 and measurement event A4.

The measurement event A1 (Event A1) means that the signal quality of the serving cell is higher than a certain threshold (Serving becomes better than threshold). The measurement event A1 is a requirement on the signal quality of the serving cell, and the second condition may include the measurement event A1.

In the embodiment of the present invention, the UE judges whether the signal quality of the candidate cell satisfies the measurement event A3 and/or the measurement event A5 and/or the measurement event A4, and judges whether the signal quality of the serving cell satisfies the measurement event A1. If yes, the UE performs DAPS handover to the candidate cell.

For example, the source base station configures measurement events A3/A5/A4 (first condition) and measurement event A1 (second condition) as handover execution conditions of the candidate cell Cell1. After the UE receives the radio resource configured for the UE by the candidate cell (placed in a transparent container) and the above handover execution conditions, it begins to evaluate Cell1 and the serving cell. If Cell1 satisfies the measurement event A3/A5/A4 and the serving cell satisfies the measurement event A1, the UE performs handover to Cell1. The UE implements DAPS handover according to the DAPS handover configuration (obtained through the Transparent Container) configured for the UE by Cell1.

Conversely, if the UE finds that Cell1 satisfies the measurement event A3/A5/A4, but the serving cell does not satisfy the measurement event A1, then the UE performs a handover to Cell1, which is a non-DAPS handover, that is, a normal handover.

In another non-limiting embodiment of the present invention, the first condition includes measurement event A3 and/or measurement event A5 and/or measurement event A4, and the second condition includes not running timer T310 (including T310 not running time out).

In a specific implementation, the timer T310 is a timer for the UE to judge that the radio link fails. The operation of T310 means that the signal quality of the serving cell is relatively poor, so whether T310 is activated here is used to determine whether to perform DAPS handover.

For example, the source base station configures the measurement event A3/A5/A4 (first condition) as the handover execution condition of the candidate cell Cell1. At this time, the network configuration can perform DAPS handover for Cell1, and only A3/A5/A4 (first condition) is satisfied. Normal switching can be performed. After receiving the above handover execution conditions, the UE starts to evaluate Cell1 and the serving cell. If Cell1 satisfies the measurement event A3/A5/A4, and the UE does not run the timer T310 (including that T310 has not timed out), the UE performs DAPS handover to Cell1. The UE implements DAPS handover according to the DAPS handover configuration (obtained through the Transparent Container) configured for the UE by Cell1.

Conversely, if the UE finds that Cell1 satisfies the measurement events A3/A5/A4, but the UE runs the timer T310 (including T310 timeout), the UE performs a handover to Cell1 at this time, which is a non-DAPS handover, that is, a normal handover.

In this embodiment, whether T310 is running is used as the basis for judging whether the serving cell meets the second condition. This is a method for implicitly configuring the second condition. It should be noted that if the UE finds that T310 has been running before and has timed out, the UE It is considered that the second condition is not satisfied. In practice, there are other ways to determine whether the serving cell satisfies the second condition. For example, if the radio link failure occurs in the serving cell, or the UE finds that it is out of synchronization with the serving cell, it can be considered that the signal quality of the serving cell does not meet the requirements, and the UE Cannot perform DAPS switchover. In other words, the second condition in the embodiment of the present invention may be that no radio link failure occurs in the serving cell or the serving cell keeps synchronization with the serving cell.

In a non-limiting embodiment of the present invention, the UE needs to obtain the data radio bearer on which the DAPS handover is to be performed.

Specifically, the UE may acquire a data radio bearer (DataRadio Bearer, DRB) that needs to perform DAPS handover from the handover command, for example, an identifier of the data radio bearer.

Further, when performing DAPS handover, the UE configures the PDCP entity of the data radio bearer as a PDCP entity for DAPS handover, and the PDCP entity for DAPS handover can simultaneously process data from the serving cell and the target Candidate cell data.

For example, for the case where the data radio bearer DRB1 adopts DAPS handover, the UE reconfigures the PDCP entity of DRB1 as the PDCP entity used for DAPS handover. At this time, the PDCP entity can simultaneously process data from the source base station side and the target base station side. When the UE accesses the candidate cell Cell1, it continues to maintain the connection with the serving cell. After the UE successfully accesses Cell1, the UE maintains data transmission with the serving cell and Cell1 at the same time, and waits until Cell1 sends a command to the UE to release the connection on the source side. , the UE releases the connection with the serving cell.

Correspondingly, please refer to FIG. 2 , the handover configuration method shown in FIG. 2 can be used on a network device side, such as a source base station (also called a serving base station) side.

Specifically, the switching configuration method may include the following steps:

Step 201: Configure the handover execution condition corresponding to DAPS handover, the handover execution condition includes a first condition, or the handover execution condition includes the first condition and a second condition, and the first condition indicates the signal quality for the candidate cell requirements, the second condition indicates the requirement for the signal quality of the serving cell;

Step 202: Send the handover execution condition, and the handover execution condition is used to notify the candidate cell when the signal quality of the target candidate cell satisfies the first condition and the signal quality of the serving cell satisfies the second condition. Perform DAPS switchover.

In this embodiment, the handover execution condition may be carried in the handover command and sent out.

For example, a UE establishes three bearers, DRB1, DRB2, and DRB3. Among them, DRB1 has higher quality of service parameters and requires a shorter data transmission delay. Therefore, the serving base station (the source base station before the handover) prepares to configure DAPS for DRB1 switching, while the other two DRBs are not configured with DAPS switching. At the same time, in order to meet the handover success rate, the serving base station intends to configure conditional handover for the UE. After receiving the measurement report sent by the UE, the serving base station finds that the UE is no longer in the central area of the cell. To satisfy mobility, the serving base station selects Cell1 and Cell2 as candidate cells for UE handover according to the measurement report reported by the UE. Then the source base station (after negotiating with the candidate base station) can indicate that for the candidate cell Cell1, DRB1 is configured as DAPS handover, the other two DRBs are non-DAPS handover, and the corresponding handover execution conditions; indicate that the candidate cell Cell2 is non-DAPS Switching (that is, conditional switching), and the corresponding switching execution conditions.

In a specific embodiment, the source base station may configure the first condition to include the measurement event A3 and/or the measurement event A5 and/or the measurement event A4, and the second condition to include the measurement event A1. In this case, the switching command includes a first condition and a second condition. That is to say, the source base station configures the handover execution condition in an explicit configuration manner. The handover command can be sent to the UE through one RRC signaling or multiple RRC signalings, that is, the first condition and the second condition can be sent simultaneously, or the first condition and the second condition can be sent separately.

In a specific embodiment, the first condition includes the measurement event A3 and/or the measurement event A5 and/or the measurement event A4, and the second condition includes not running the timer T310 (including T310 not timed out). In this case, only the first condition is included in the switching command. That is to say, the source base station configures the handover execution conditions corresponding to the DAPS handover in an implicit configuration manner, and the signaling overhead is smaller.

Please refer to FIG. 3 , which shows an interaction flowchart.

In step 301 , the source base station 302 sends a handover request to the candidate target base station 303 .

In step 302 , the source base station 302 sends a handover request to the candidate target base station 304 .

In a specific implementation, the source base station 302 selects the candidate cells Cell1, Cell2 and Cell3 as the candidate cells for UE301 handover according to the measurement report reported by the UE301, and the source base station 302 can sequentially report to the base stations to which these three cells belong (that is, the candidate target base station 303 and the candidate cell). The target base station 304) sends a handover request. The base station to which the candidate cell Cell3 belongs is not shown in the figure. The indication in the handover request is a conditional handover.

In a specific implementation, the handover request sent by the source base station 302 to the base station to which Cell1 belongs (candidate target base station 303) indicates that this handover is a conditional handover, and indicates that the DRB1 request is configured as a DAPS handover, and that the other two DRBs are non-DAPS handovers. The request does not need to indicate the handover execution condition to the candidate target base station 303 .

The handover request sent by the source base station 302 to the base station to which Cell2 belongs (candidate target base station 304 ) indicates that this handover is a conditional handover. The source base station 302 judges based on the bandwidth combination supported by the UE301 that the handover of the UE301 from the serving cell to the Cell2 cannot support the DAPS handover, so the handover request does not include DAPS handover information.

The handover request sent by the source base station 302 to the base station to which Cell3 belongs indicates that this handover is conditional handover, and indicates that DRB1 is configured as DAPS handover, and the other two DRBs are non-DAPS handover.

In step 303 , the candidate target base station 303 sends a handover request confirmation to the source base station 302 .

In step 304 , the candidate target base station 304 sends a handover request acknowledgment to the source base station 302 .

In specific implementation, candidate target base stations 303 and 304 can decide whether to accept the handover request based on their own load levels, and if accepted, configure necessary radio resources for the UE, and then return a handover request confirmation (which may be called Handover Request Acknowledge, or Handover Preparation Acknowledge); if not accepted, return request failure to the source base station.

In specific implementation, for the candidate target base station 303, if the handover request is accepted, there may be two kinds of processing:

1. The candidate target base station 303 can configure radio resources that only support conditional handover (that is, radio resource configuration only for conditional handover, which does not include DAPS handover information), and then return a handover request confirmation to the source base station 302;

2. The candidate target base station 303 can configure wireless resources that support conditional handover and DAPS handover. For this scenario, the candidate target base station 303 configures DRB1 for DAPS handover, and additionally configures DAPS-related parameters for the UE. Specifically, it can be power control parameters, such as configuring During the DAPS handover process, the uplink power sharing mode (uplinkPowerSharingDAPS-Mode), configured wireless parameters, etc., are used by UE301 after judging that Cell1 satisfies the handover execution condition.

The candidate target base station 303 may respectively indicate to the source base station to configure only radio resources supporting conditional handover, and to configure radio resources supporting conditional handover and DAPS handover through two independent interface signalings.

The candidate target base station 303 can also indicate in a handover request confirmation message that only the first radio resource configuration (Target NG-RAN node To Source NG-RAN node TransparentContainer 1) that supports conditional handover is configured, and that the configuration supports conditional handover and DAPS handover The second radio resource configuration (Target NG-RANnode To Source NG-RAN node Transparent Container2). Usually, the wireless resources configured by the candidate target base station for the UE are placed in a transparent container (Transparent Container), and the source base station does not need to parse the content in this container, and sends it directly to the UE. If a handover request acknowledgment message indicates that only radio resources that support conditional handover (indicated by Transparent Container 1) and wireless resources that support conditional handover and DAPS handover (indicated by Transparent Container 2) are configured, the candidate target base station needs to send The source base station specifies which configuration corresponds to the TransparentContainer. The candidate target base station can indicate that Transparent Container 2 is configured with DAPS (indicated by an additional cell), while Transparent Container 1 is not configured with DAPS; or only indicates that Transparent Container 2 is configured with DAPS, and does not indicate that Transparent Container 1 configured with DAPS does not contain DAPS by default. of.

The candidate target base station 304 only needs to configure the radio resource corresponding to the handover condition, and then send it to the source base station 302 through a handover request confirmation. The base station to which the candidate cell Cell3 belongs may adopt the same processing mechanism as that of the candidate target base station 303 .

In step 305, the source base station 302 sends a handover command to the UE 301 .

Specifically, after receiving handover request confirmations returned by different candidate target base stations, the source base station 302 configures corresponding handover execution conditions, carries them in the handover command and sends them to the UE. Different candidate cells may be configured with different or the same handover execution conditions.

In step 306, UE301 measures and evaluates the signal quality of the candidate cell and the signal quality of the serving cell.

In step 307, UE301 executes handover when the candidate cell satisfies the handover execution condition.

In specific implementation, for the candidate cell Cell1, there are two radio resource configurations, and the source base station 302 can set different handover execution conditions. In addition to using the original handover execution conditions such as events A3 and/or A5 and/or A4, the source base station 302, , it is also necessary to set the signal quality of the serving cell to meet certain requirements. For example, event A1 can be added. At this time, the handover execution conditions include A3/A5/A4+A1, which are respectively for the candidate target cell and the serving cell. For example, the transmission transparent container (TransparentContainer 2) is configured with DAPS conditional handover, and the source base station 302 configures A3/A5/A4+A1 as the handover execution condition of Cell1, and the UE receives the handover of Transparent Container 2 and A3/A5/A4+A1 After executing the conditions, start to evaluate Cell1 and the serving cell. If Cell1 satisfies A3/A5/A4, and the serving cell satisfies A1, the UE performs handover to Cell1, and the UE configures the DAPS handover configuration (via Transparent Container 2) for the UE based on Cell1. Implement DAPS handover, that is, DAPS handover is adopted for DRB1, and the UE reconfigures the PDCP entity of DRB1 as a PDCP entity for DAPS handover. At this time, the PDCP entity can process data from the source side and the target side at the same time, and the UE is implementing access In Cell1, continue to maintain the connection with the serving cell. After the UE successfully accesses Cell1, the UE maintains data transmission with the source serving cell and Cell1 at the same time. When Cell1 sends a release source connection to the UE, the UE releases the connection with the source side. Connection.

In an optional embodiment, for the candidate cell Cell1 configured with DAPS conditional handover, the source base station may not explicitly configure the handover execution conditions, and use the existing A3/A5/A4 to determine whether the neighboring cell meets the handover conditions; The signal quality of the serving cell determines whether to perform DAPS handover if T310 is started. When T310 is not running (including no timeout), UE performs DAPS handover; otherwise, UE performs non-DAPS handover.

For the candidate cell Cell2, the source base station 302 may only set the handover execution condition of A3/A5/A4, so that the UE evaluates whether the handover execution condition is met for Cell2.

For the candidate cell Cell3, the source base station 302 can set the handover execution conditions of A3/A5/A4+A1, or only set the handover execution conditions of A3/A5/A4, and the UE additionally uses T310 to judge the DAPS handover.

In an optional embodiment, for the candidate cell Cell1 configured with DAPS conditional handover, the source base station can set the handover execution conditions to include A3/A5/A4+A1 to determine whether to perform DAPS handover, and can set the handover execution conditions to include A3 /A5/A4 are used to judge common non-DAPS switching. The thresholds for A3/A5/A4 in the DAPS handover execution condition and A3/A5/A4 in the non-DAPS handover execution condition may be the same or different. Taking the A3 event as an example (the signal quality of the candidate cell is higher than that of the serving cell by a predetermined offset), the offset corresponding to A3 in the DAPS handover execution condition can be the same as the offset corresponding to A3 in the non-DAPS handover execution condition ; It is also possible to set the offset corresponding to A3 in the non-DAPS switching execution condition to take a higher value such as 3db, and the offset corresponding to A3 in the DAPS switching execution condition to take a lower value such as 0db, In this way, it is easier for the UE to trigger the DAPS handover, which is convenient for reducing the handover interruption delay. If the handover execution condition is the A4 event (the signal quality of the candidate cell is higher than the preset threshold), at this time, a higher threshold can be set for the A4 event in the non-DAPS handover execution condition. Correspondingly, if the handover execution condition is A5 event (the signal quality of the serving cell is lower than the threshold 1 and the signal quality of the candidate cell is higher than the threshold 2), you can set the threshold 2 higher and the threshold 1 lower in the non-DAPS handover execution condition, so that It makes it easier for the UE to trigger DAPS handover.

In step S308 , random access is performed between the UE 301 and the candidate target base station 303 .

In step S309 , UE 301 sends RRC reconfiguration complete to candidate target base station 303 .

For accessing the target cell through a random access process between the UE and the base station, reference may be made to the prior art, which will not be repeated here.

Referring to FIG. 4 , the embodiment of the present invention also discloses a cell handover device 40 . The cell switching device 40 may include:

The obtaining module 401 is configured to obtain a handover execution condition corresponding to DAPS handover, the handover execution condition includes a first condition and a second condition, the first condition indicates the requirement for the signal quality of the candidate cell, and the second condition indicates the requirement for the signal quality of the candidate cell The signal quality requirements of the serving cell;

A measurement module 402, configured to measure and evaluate the signal quality of the candidate cell and the signal quality of the serving cell;

A handover module 403, configured to perform DAPS handover to the candidate cell if the signal quality of the candidate cell satisfies the first condition and the signal quality of the serving cell satisfies a second condition.

In a specific implementation, the above-mentioned cell switching device may correspond to a chip with a cell switching function in the user equipment, such as a SOC (System-On-a-Chip, system on chip), a baseband chip, etc.; A chip module with a switching function; or corresponding to a chip module with a chip with a data processing function, or corresponding to a user equipment.

Referring to FIG. 5 , the embodiment of the present invention also discloses a switching configuration device 50 . The switching configuration device 50 may include:

The configuration module 501 is configured to configure the handover execution condition corresponding to DAPS handover, the handover execution condition includes a first condition and a second condition, the first condition indicates the requirement for the signal quality of the candidate cell, and the second condition indicates the requirement for the signal quality of the candidate cell The signal quality requirements of the serving cell;

The sending module 502 is configured to send the handover execution condition, and the handover execution condition is used to send the signal to the target candidate cell when the signal quality of the target candidate cell satisfies the first condition and the signal quality of the serving cell satisfies the second condition. The candidate cell performs DAPS handover.

In a specific implementation, the above-mentioned switch configuration device may correspond to a chip with a switch configuration function in the network device, such as a SOC (System-On-a-Chip, system on chip), a baseband chip, etc.; A chip module with a configuration function; or a chip module corresponding to a chip with a data processing function, or corresponding to a network device.

For more details about the working principle and working mode of the cell handover device 40 or the handover configuration device 50 , reference may be made to the related descriptions in FIG. 1 to FIG. 3 , which will not be repeated here.

Regarding each device described in the above embodiments, each module/unit contained in the product may be a software module/unit, or a hardware module/unit, or may be partly a software module/unit and partly a hardware module/unit. . For example, for each device or product applied to or integrated into a chip, each module/unit contained therein may be realized by hardware such as a circuit, or at least some modules/units may be realized by a software program, and the software program Running on the integrated processor inside the chip, the remaining (if any) modules/units can be realized by means of hardware such as circuits; They are all realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components of the chip module, or at least some modules/units can be realized by means of software programs, The software program runs on the processor integrated in the chip module, and the remaining (if any) modules/units can be realized by hardware such as circuits; /Units can be realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components in the terminal, or at least some modules/units can be implemented in the form of software programs Realization, the software program runs on the processor integrated in the terminal, and the remaining (if any) modules/units can be implemented by means of hardware such as circuits.

Referring to FIG. 6 , the embodiment of the present invention also discloses a handover configuration method, which can be used on the candidate target base station side, that is, each step of the method can be performed by the candidate target base station.

Specifically, the switching configuration method may include the following steps:

Step 601: Receive a switching request, the switching request indicates a conditional switching request;

Step 602: Configure the first radio resource configuration for non-DAPS handover and the second radio resource configuration for DAPS handover;

Step 603: Send the first radio resource configuration and the second radio resource configuration.

In this embodiment, the candidate target base station can decide whether to accept the handover request based on its own load level, and if accepted, configure necessary wireless resources for the UE, and then return a handover request confirmation (which can be called HandoverRequest Acknowledge, or Handover Request Acknowledge, or Handover Request) to the source base station Preparation Acknowledge). If not, return request failure to the source base station.

Specifically, after the candidate target base station accepts the handover request, there may be the following two processes:

1. The candidate target base station can configure the first radio resource configuration that only supports conditional handover (that is, the radio resource configuration only used for conditional handover, which does not include DAPS handover information), and then confirm by returning a handover request to the source base station;

2. The candidate target base station may configure a second radio resource configuration that supports conditional handover and DAPS handover. For example, the candidate target base station configures DRB1 for DAPS handover, and additionally configures DAPS-related parameters for the UE, such as configuring the uplink power sharing mode (uplinkPowerSharingDAPS-Mode) during the DAPS handover process, and configured wireless parameters.

In a non-limiting embodiment, the candidate target base station may send the first radio resource configuration and the second radio resource configuration respectively in two independent signalings. The two independent signalings are X2/Xn interface signaling, or newly added signaling.

Among them, 5G base stations can transmit data through the Xn interface. Data is transmitted between the 4G base station and the 5G base station through the X2 interface. That is to say, the first radio resource configuration and the second radio resource configuration can be transmitted through the interface between the base stations. The candidate target base station can respectively indicate to the source base station to configure only radio resources supporting conditional handover, and to configure radio resources supporting conditional handover and DAPS handover through two independent interface signalings.

In another non-limiting embodiment, the candidate target base station may send a handover request acknowledgment, where the handover request acknowledgment includes the first radio resource configuration and the second radio resource configuration.

In this embodiment, the first radio resource configuration and the second radio resource configuration may be carried in the handover request confirmation and sent out.

In a non-limiting embodiment, the handover request confirmation includes a first transparent container and a second transparent container, the first transparent container stores the first wireless resource configuration, and the second transparent container stores the The second wireless resource configuration.

Further, the handover request confirmation includes indication information, the indication information indicates that the second transparent container corresponds to DAPS handover, or the indication information indicates that the first transparent container corresponds to non-DAPS handover, and the second transparent container The transparent container corresponds to DAPS switching.

In the specific implementation, the candidate target base station indicates in a handover request confirmation message that only the first radio resource configuration (Target NG-RAN node To Source NG-RAN node TransparentContainer 1) that supports conditional handover is configured, and that the configuration supports conditional handover and DAPS Switched second radio resource configuration (Target NG-RANnode To Source NG-RAN node Transparent Container2). Usually, the wireless resources configured by the candidate target base station for the UE are placed in a transparent container (Transparent Container), and the source base station does not need to parse the content in this container, and sends it directly to the UE. If a handover request acknowledgment message indicates that only radio resources that support conditional handover (indicated by Transparent Container 1) and wireless resources that support conditional handover and DAPS handover (indicated by Transparent Container 2) are configured, the candidate target base station needs to send The source base station specifies which configuration corresponds to the TransparentContainer. The candidate target base station can indicate that Transparent Container 2 is configured with DAPS (indicated by an additional cell), while Transparent Container 1 is not configured with DAPS; or only indicates that Transparent Container 2 is configured with DAPS, and does not indicate that Transparent Container 1 configured with DAPS does not contain DAPS by default. of.

For example, the base station to which the candidate cell Cell1 belongs may send two radio resource configurations to the source base station through independent signaling or handover request confirmation. The base station to which the candidate cell Cell2 belongs only needs to configure the radio resource configuration corresponding to the handover condition, and then send a handover request confirmation to the source base station. The base station to which the candidate cell Cell3 belongs may adopt the same processing mechanism as that of the base station to which the candidate cell Cell1 belongs.

Correspondingly, please refer to FIG. 7 , the embodiment of the present invention also discloses a handover configuration method, which can be used on the source base station side, that is, the source base station can perform each step of the method.

Specifically, the switching configuration method may include the following steps:

Step 701: Send a switching request, the switching request indicates a conditional switching request;

Step 702: Receive a first radio resource configuration and a second radio resource configuration, the first radio resource configuration is for non-DAPS handover, and the second radio resource configuration is for DAPS handover.

In a specific implementation, the source base station may directly forward the first radio resource configuration and the second radio resource configuration to the UE through a handover command.

In a specific embodiment, the source base station may determine that the candidate cell applies non-DAPS handover according to the network conditions of the candidate cell, and/or configure at least one wireless data bearer as DAPS handover; The first indication information of the DAPS handover, and/or carries the second indication information, where the second indication information indicates the wireless data bearer requesting to perform the DAPS handover.

For example, after receiving the measurement report sent by the UE, the source base station finds that the UE is no longer in the central area of the cell. In order to meet the mobility requirements, the source base station selects Cell1, Cell2, and Cell3 as candidate cells for UE handover according to the measurement report reported by the UE. The source base station may sequentially send handover requests to the base stations to which the three cells belong (ie candidate target base stations):

If the source base station sends a handover request to the base station to which Cell1 belongs (base station 1), it indicates in the handover request that this handover is a conditional handover, and indicates that DRB1 requests to be configured as a DAPS handover, and the other two DRBs are non-DAPS handovers, which are not required in the handover request Instructing the base station 1 to perform handover conditions;

The source base station can send a handover request to the base station (base station 2) to which Cell2 belongs, and indicate in the handover request that this handover is a conditional handover. The serving cell judges based on the bandwidth combinations supported by the UE that the UE cannot support DAPS handover when switching from the serving cell to Cell2, so the handover The request did not include information on DAPS switching.

The source base station sends a handover request to the base station (base station 3) to which Cell3 belongs, and indicates in the handover request that this handover is a conditional handover, and indicates that DRB1 is configured as DAPS handover, and the other two DRBs are non-DAPS handover.

Further, the source base station may determine conditional handover execution conditions and DAPS handover execution conditions respectively according to the first radio resource configuration and the second radio resource configuration.

Specifically, for the candidate cell Cell1, there are two radio resource configurations. The source base station can set different handover execution conditions. The source base station uses the original handover execution conditions, that is, the first condition, such as events A3 and/or A5 and /or A4, it is also necessary to set the signal quality of the source serving cell to meet a certain requirement, that is, the second condition, for example, event A1 may be added. Or the source base station only configures the first condition, and the UE determines whether to start T310 on the source side to determine whether to perform DAPS handover during handover.

Specifically, for the candidate cell Cell2, there is only one radio resource configuration, that is, the first radio resource configuration, and the source base station can only set the handover execution conditions of A3/A5/A4, so that the UE evaluates whether the handover execution conditions are met for Cell2.

For the candidate cell Cell3, there are two radio resource configurations. The source base station can set the handover execution conditions of A3/A5/A4+A1, or the source base station can only set the handover execution conditions of A3/A5/A4. The UE additionally uses T310 for DAPS handover judge.

After the UE receives the configurations of the candidate cells Cell1, Cell2, and Cell3 and the corresponding handover execution conditions, the UE evaluates the three candidate cells and the serving cell to determine to execute the corresponding cell handover.

The embodiment of the present invention also discloses a storage medium, the storage medium is a computer-readable storage medium, on which a computer program is stored, and the computer program can execute the steps of the methods described in the foregoing embodiments when running. The storage medium may include ROM, RAM, magnetic or optical disks, and the like. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory (non-transitory) memory, and the like.

The embodiment of the present invention also discloses a user equipment. The user equipment may include a memory and a processor, and a computer program that can run on the processor is stored in the memory. When the processor runs the computer program, it can execute the steps of the cell handover method.

The embodiment of the present invention also discloses a network device. The user device may include a memory and a processor, and a computer program that can run on the processor is stored in the memory. When the processor runs the computer program, it can execute the steps of the switching configuration method. The network device may be a base station or a core network.

The Fangming technical solution is also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, Vehicle-to-Everything (vehicle-to-everything communication) architecture and other architectures.

The core network described in the embodiment of the present application may be an evolved packet core network (evolved packet core, EPC for short), a 5G Core Network (5G core network), or a new core network in a future communication system. 5G CoreNetwork is composed of a group of devices, and implements functions such as mobility management access and mobility management function (Access and Mobility Management Function, AMF), provides data packet routing and forwarding and QoS (Quality of Service) management and other functions of the user plane Function (User Plane Function, UPF), session management function (Session Management Function, SMF) that provides functions such as session management, IP address allocation and management, etc. EPC can be composed of MME that provides functions such as mobility management and gateway selection, Serving Gateway (S-GW) that provides functions such as data packet forwarding, and PDN Gateway (P-GW) that provides functions such as terminal address allocation and rate control.

The base station (base station, BS for short) in the embodiment of the present application may also be referred to as a base station device, and is a device deployed in a radio access network (RAN) to provide a wireless communication function. For example, the equipment providing base station function in 2G network includes base wireless transceiver station (English: base transceiver station, referred to as BTS), the equipment providing base station function in 3G network includes Node B (NodeB), and the equipment providing base station function in 4G network Including evolved NodeB (evolvedNodeB, eNB), in wireless local area networks (wireless local area networks, referred to as WLAN), the device that provides base station functions is an access point (access point, referred to as AP), 5G new wireless (New Radio, The device gNB that provides base station functions in NR for short, and the node B (ng-eNB) that continues to evolve, in which gNB and the terminal use NR technology for communication, and the ng-eNB and the terminal use E-UTRA (Evolved Universal Terrestrial Radio Access) technology for communication, both gNB and ng-eNB can be connected to the 5G core network. The base station in the embodiment of the present application also includes devices that provide base station functions in future new communication systems, and the like.

The base station controller in the embodiment of the present application is a device for managing base stations, such as a base station controller (BSC for short) in a 2G network and a radio network controller (radio network controller, RNC for short) in a 3G network , It can also refer to the device that controls and manages the base station in the new communication system in the future.

The network-side network in the embodiment of the present invention refers to a communication network that provides communication services for terminals, including a base station of a wireless access network, a base station controller of the wireless access network, and equipment on the core network side.

The terminal in the embodiment of the present application may refer to various forms of user equipment (user equipment, referred to as UE), access terminal, user unit, user station, mobile station, mobile station (mobile station, built as MS), remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication device, user agent, or user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP for short) phone, a Wireless Local Loop (WLL for short) station, a Personal Digital Assistant (PDA for short), a Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in the future 5G network or future evolution of the Public Land Mobile Network (PLMN for short) ), etc., which are not limited in this embodiment of the present application.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B may mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article indicates that the associated objects are an "or" relationship.

"Multiple" appearing in the embodiments of the present application means two or more.

The first, second, etc. descriptions that appear in the embodiments of this application are only for illustration and to distinguish the description objects. Any limitations of the examples.

The "connection" in the embodiment of the present application refers to various connection methods such as direct connection or indirect connection to realize communication between devices, which is not limited in the embodiment of the present application.

It should be understood that in the embodiment of the present application, the processor may be a central processing unit (CPU for short), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, DSP for short), dedicated Integrated circuit (application specific integrated circuit, referred to as ASIC), off-the-shelf programmable gate array (field programmable gate array, referred to as FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

The above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or other arbitrary combinations. When implemented using software, the above-described embodiments may be implemented in whole or in part in the form of computer program products. The computer program product comprises one or more computer instructions or computer programs. When the computer instruction or computer program is loaded or executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Wired or wireless transmission to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center that includes one or more sets of available media.

It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

In the several embodiments provided in this application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the methods described in various embodiments of the present invention.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims (16)

1. A cell handover method, characterized in that, comprising: Obtain the handover execution condition corresponding to the DAPS handover, the handover execution condition includes a first condition and a second condition, the first condition indicates the requirement for the signal quality of the candidate cell, and the second condition indicates the requirement for the signal quality of the serving cell ; measuring the signal quality of the candidate cell and the signal quality of the serving cell; If the signal quality of the candidate cell satisfies the first condition and the signal quality of the serving cell satisfies the second condition, perform DAPS handover to the candidate cell. 2. The cell handover method according to claim 1, wherein the first condition includes measurement event A3 and/or measurement event A5 and/or measurement event A4, and the second condition includes measurement event A1. 3. The cell handover method according to claim 2, wherein the performing DAPS handover to the candidate cell comprises: If the signal quality of the candidate cell satisfies the measurement event A3 and/or measurement event A5 and/or measurement event A4, and the signal quality of the serving cell satisfies the measurement event A1, perform DAPS on the candidate cell switch. 4. The cell handover method according to claim 1, wherein the first condition includes measurement event A3 and/or measurement event A5 and/or measurement event A4, and the second condition includes not running timer T310 . 5. The cell handover method according to claim 4, wherein the performing DAPS handover to the candidate cell comprises: If the signal quality of the candidate cell satisfies the measurement event A3 and/or measurement event A5 and/or measurement event A4, and the timer T310 is not running for the serving cell, perform DAPS handover to the candidate cell. 6. The cell switching method according to claim 1, further comprising: If the signal quality of the candidate cell satisfies the first condition and the signal quality of the serving cell does not satisfy the second condition, perform handover to the candidate cell. 7. The cell handover method according to claim 1, wherein said obtaining the handover execution condition corresponding to the DAPS handover further comprises: Obtain the data radio bearer that needs to perform DAPS handover. 8. The cell handover method according to claim 7, wherein the performing DAPS handover to the candidate cell comprises: The PDCP entity of the data radio bearer is configured as a PDCP entity for DAPS handover, and the PDCP entity for DAPS handover can simultaneously process data from the serving cell and the candidate cell. 9. A switching configuration method, characterized in that, comprising: Configuring a handover execution condition corresponding to the DAPS handover, the handover execution condition includes a first condition, or the handover execution condition includes the first condition and a second condition, and the first condition indicates a requirement for a candidate cell signal quality, The second condition indicates a requirement for signal quality of a serving cell; Sending the handover execution condition, the handover execution condition is used to perform DAPS handover to the candidate cell when the signal quality of the target candidate cell satisfies the first condition and the signal quality of the serving cell satisfies the second condition . 10. The handover configuration method according to claim 9, wherein the first condition includes measurement event A3 and/or measurement event A5 and/or measurement event A4, and the second condition includes measurement event A1. 11. The handover configuration method according to claim 9, wherein the first condition includes a measurement event A3 and/or a measurement event A5 and/or a measurement event A4, and the second condition includes a non-running timer T310 , the switching execution conditions corresponding to the configured DAPS switching include: The signaling configuring the handover execution condition only includes the first condition. 12. A cell switching device, characterized in that it comprises: An acquisition module, configured to acquire a handover execution condition corresponding to DAPS handover, the handover execution condition includes a first condition and a second condition, the first condition indicates a requirement for signal quality of a candidate cell, and the second condition indicates a requirement for a service Cell signal quality requirements; a measurement module, configured to measure the signal quality of the candidate cell and the signal quality of the serving cell; A handover module, configured to perform DAPS handover to the candidate cell if the signal quality of the candidate cell satisfies the first condition and the signal quality of the serving cell satisfies a second condition. 13. A switching configuration device, characterized in that it comprises: A configuration module, configured to configure handover execution conditions corresponding to DAPS handover, the handover execution conditions include a first condition and a second condition, the first condition indicates requirements for signal quality of candidate cells, and the second condition indicates requirements for service Cell signal quality requirements; A sending module, configured to send the handover execution condition, where the handover execution condition is used to send the handover execution condition to the The candidate cell performs DAPS handover. 14. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is run by a processor, the steps of the cell handover method according to any one of claims 1 to 8 are executed, or The steps of the handover configuration method described in any one of claims 9 to 11. 15. A user device, comprising a memory and a processor, the memory stores a computer program that can run on the processor, wherein the processor executes claims 1 to 1 when running the computer program. Steps of the cell handover method described in any one of 8. 16. A network device, comprising a memory and a processor, the memory is stored with a computer program that can run on the processor, characterized in that, when the processor runs the computer program, it executes claims 9 to Steps in the switching configuration method described in any one of 11.

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