CN108738081B - Cell handover configuration method, device and base station - Google Patents

Abstract

The present invention provides a cell handover configuration method, device, and base station. The cell handover configuration method on the source base station side includes: the source base station sends an indication message to the candidate base station, and the indication information is used to instruct the candidate base station to monitor the UE in the candidate cell. Perform radio link control RRC configuration or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cells are: all cells with UE context or some cells with UE context in the cell of the candidate base station; according to the operation performed by the candidate base station according to the instruction information, The handover information is sent to the UE, and the handover information is used to make the UE perform cell handover according to the handover information. Therefore, the solution of the present invention can control the candidate base station to perform RRC configuration, thereby solving the problems in the prior art that the RRC configuration method is inflexible during the cell handover preparation process, so that the system resource utilization rate is not high enough, and the cell handover delay is still long. .

Description

Cell handover configuration method, device and base station

technical field

The present invention relates to the field of communication technologies, and in particular, to a configuration method, device and base station for cell handover.

Background technique

MulteFire is a wireless access technology that extends LTE to unlicensed bands, in which unlicensed band carriers can provide services independently of licensed band carriers. In order to fairly occupy the unlicensed band channel with other devices in the unlicensed band (such as WiFi devices) and avoid mutual interference between devices in the unlicensed band, the MF physical layer introduces a WiFi-like carrier sense technology called Listen Before Talk (Listen Before Talk, LBT) mechanism. When the base station or the terminal detects that the unlicensed frequency band channel is occupied, that is, when the LBT fails, it stops sending signals, and only sends the signal when it detects that the channel is idle, that is, when the LBT succeeds.

In order to improve the transmission efficiency of the downlink common control signal of the base station under the LBT mechanism, MulteFire introduces the Discovery Reference Signal (DRS), which contains the main downlink common control signals, including system broadcast, Primary Sync Signal, PSS), Secondary Sync Signal (SSS), Enhanced Primary Sync Signal (ePSS), Enhanced Secondary Sync Signal (eSSS), Cell Reference Signal (CRS) , the main system information block (Master Information Block, MIB) and enhanced system information block (SystemInformation Block Multefire, SIB-MF). The DRS occupies 12 or 14 symbols (Symbols) in one downlink subframe. The terminal may receive DRS within the Discovery Signals Measurement Timing Configuration (DMTC) window to perform downlink synchronization, receive MIB and SIB-MF. The MulteFire cell only transmits the CRS in the DRS subframe or other subframes that are sent by a Physical Downlink Shared Channel (PDSCH). Therefore, the terminal can only perform channel measurement on the MulteFire serving cell or the MulteFire neighboring cell within the DMTC window for cell selection, cell reselection or handover.

In addition, when the channel measurement result of the terminal located in the Multefire cell satisfies the handover condition, if the channel is occupied according to the LBT mechanism, the measurement report cannot be sent. Similarly, after the Multefire cell receives the measurement report of the terminal, if the LBT mechanism is used When it is detected that the channel is occupied, the switching command cannot be sent, resulting in excessive switching delay. Therefore, in the Multefire system, a terminal automatic handover is supported. When the terminal detects that the channel quality of the current access cell and the adjacent cell meets the handover conditions, it can automatically initiate a random access connection to the target cell without waiting for the handover command of the current access cell. Enter the target cell, that is, when the terminal detects that the channel quality of the current access cell and the adjacent cell meets the handover conditions, it does not need to send a measurement report to the current cell and wait for the handover command of the current cell to reduce the handover delay.

However, although the above-mentioned automatic handover method reduces the waiting time, during the handover process of the terminal, the handover time domain is still relatively long because the terminal still needs to perform some handover preparations to perform cell handover.

In addition, in order to further reduce the handover delay, the Multefire system also supports another kind of automatic handover of the terminal, that is, when the terminal detects that the signal quality of the automatic handover measurement object meets the measurement report conditions of the automatic handover, it sends a measurement report to the base station and starts the automatic handover. Handover timer, after receiving the measurement report, the base station initiates traditional handover preparation to the target cell and sends a handover command to the terminal. If the terminal receives the handover command sent by the base station before the automatic handover timer expires, it will switch to the target cell indicated in the handover command according to the handover command; switch.

It can be seen from the above that, according to the existing automatic handover scheme, before the terminal performs cell handover, the access base station of the terminal can initiate automatic handover preparation, but in the automatic handover preparation in the prior art, when the source base station instructs the candidate base station to perform RRC configuration. , the configuration method is not flexible enough, so that the utilization rate of system resources is not low, and the cell handover delay is still long.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a configuration method, device and base station for cell handover, so as to solve the problem that the RRC configuration method is inflexible in the preparation process of cell handover in the prior art, so that the utilization rate of system resources is low, and the cell handover delay is still relatively long. long question.

An embodiment of the present invention provides a configuration method for cell handover, including:

The source base station sends an indication information to the candidate base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: the All cells with UE context or some cells with UE context in the cells of the candidate base station;

According to the operation performed by the candidate base station according to the indication information, handover information is sent to the UE, where the handover information is used to make the UE perform cell handover according to the handover information.

The embodiment of the present invention also provides a configuration method for cell handover, including:

The candidate base station receives an indication message sent by the source base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: All cells with UE context or some cells with UE context in the cells of the candidate base station;

A corresponding operation is performed according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, where the handover information is used to make the UE perform cell handover according to the handover information.

The embodiment of the present invention also provides a configuration device for cell handover, including:

The instruction sending module is used to control the source base station to send an instruction information to the candidate base station, the instruction information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, so The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

A feedback module, configured to send handover information to the UE according to the operation performed by the candidate base station according to the indication information, where the handover information is used to make the UE perform cell handover according to the handover information.

The embodiment of the present invention also provides a configuration device for cell handover, including:

an indication receiving module, configured to control the candidate base station to receive an indication message sent by the source base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

a configuration module, configured to perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, and the handover information is used to enable the UE to perform cell switching according to the handover information. switch.

An embodiment of the present invention also provides a base station, including:

a transmitter, configured to implement the following functions: sending an indication information to the candidate base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, so The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

A processor, connected to the transmitter, configured to send handover information to the UE according to the operation performed by the candidate base station according to the indication information, where the handover information is used to make the UE perform cell handover according to the handover information.

An embodiment of the present invention also provides a base station, including:

a receiver, configured to implement the following functions: receiving indication information sent by the source base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

a processor, connected to the receiver, and configured to perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, where the handover information is used to make the UE Cell handover is performed according to the handover information.

The beneficial effects of the embodiments of the present invention are:

In the embodiment of the present invention, the source base station can instruct the candidate base station to perform RRC configuration in all cells with UE context or some cells with UE context in its cells, or not to perform RRC configuration on the UE, and according to the above operations performed by the candidate base station, The handover information is fed back to the UE, so that the UE can perform cell handover according to the handover information, so that the UE has handover basis when it needs to perform cell handover, thereby improving the handover speed. Among them, the source base station can control some or all of the cells with UE context in the candidate base station to perform RRC configuration on the UE or not to perform RRC configuration on the UE according to the situation, and the candidate base station can also perform different RRC configurations on the UE according to the resource conditions of each cell. RRC configuration, so as to realize a flexible configuration mode, and then make full use of system resources, reserve resources for UE to perform cell handover, thereby reducing handover delay.

Description of drawings

FIG. 1 shows a flowchart of a configuration method for cell handover according to a first embodiment of the present invention;

FIG. 2 shows a flowchart of a configuration method for cell handover according to a second embodiment of the present invention;

FIG. 3 shows a flowchart of a configuration method for cell handover according to a third embodiment of the present invention;

FIG. 4 shows a flowchart of a configuration method for cell handover according to a fourth embodiment of the present invention;

FIG. 5 shows a flowchart of a configuration method for cell handover according to a fifth embodiment of the present invention;

FIG. 6 shows a flowchart of a configuration method for cell handover according to a sixth embodiment of the present invention;

FIG. 7 shows a flowchart of a configuration method for cell handover according to a seventh embodiment of the present invention;

FIG. 8 shows a flowchart of a configuration method for cell handover according to an eighth embodiment of the present invention;

FIG. 9 shows a flowchart of a configuration method for cell handover according to a ninth embodiment of the present invention;

FIG. 10 shows a flowchart of a configuration method for cell handover according to a tenth embodiment of the present invention;

FIG. 11 shows a flowchart of a configuration method for cell handover according to an eleventh embodiment of the present invention;

12 is a flowchart showing a configuration method for cell handover according to the twelfth embodiment of the present invention;

13 is a block diagram showing the structure of a configuration apparatus for cell handover according to the thirteenth embodiment of the present invention;

FIG. 14 is a block diagram showing the structure of a configuration apparatus for cell handover according to the fourteenth embodiment of the present invention;

FIG. 15 shows a structural block diagram of a base station according to a fifteenth embodiment of the present invention;

FIG. 16 shows a structural block diagram of a base station according to a sixteenth embodiment of the present invention;

FIG. 17 shows one of the specific real-time flow charts of the UE, the source base station and the candidate base station in the configuration method for cell handover according to the present invention;

18 shows the second specific real-time flow chart of the UE, the source base station and the candidate base station in the configuration method for cell handover according to the present invention;

Fig. 19 shows the third specific real-time flow chart of the UE, the source base station and the candidate base station in the configuration method for cell handover according to the present invention;

Figure 20 shows the fourth specific real-time flow chart of the UE, the source base station and the candidate base station in the configuration method for cell handover according to the present invention;

Fig. 21 shows the fifth flow chart of the specific real-time mode of the UE, the source base station and the candidate base station in the configuration method for cell handover according to the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Aiming at the problems of inflexible RRC configuration in the process of cell handover preparation in the prior art, the system resource utilization rate is low, and the cell handover delay is still long, the present invention provides a cell handover configuration in the following embodiments The method, device and base station, through the source base station instructing the candidate base station to perform RRC configuration in all cells with UE context or some cells with UE context in its cell, or not to perform RRC configuration on the UE, and according to the above operations performed by the candidate base station, to the candidate base station. The UE feeds back the handover information, so that the UE can perform cell handover according to the handover information, so that when the UE needs to perform the cell handover, the UE has a handover basis, thereby improving the handover speed. Among them, because the source base station can control the candidate base station to perform RRC configuration on the UE according to the resource conditions of each cell in the candidate base station, so as to realize a flexible configuration method, and then make full use of the system resources and reserve resources for the UE to perform cell switching, thereby reducing the cost of handover delay.

first embodiment

As shown in FIG. 1 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 11: The source base station sends an indication message to the candidate base station.

The indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells of the candidate base station have UEs A cell or part of a context has a cell with a UE context. Preferably, the RRC configuration includes common RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity (CRNTI) configuration, and UE dedicated random access channel resource (RACH) configuration. one or more.

The cell handover configuration method in the embodiment of the present invention is performed before the UE performs the cell handover, that is, the cell handover configuration method in the present invention is the preparation work before the cell handover. Specifically, for example, when the UE detects that the signal quality of the neighboring cell of the cell in which the UE is located reaches a preset threshold, the source base station may be triggered to perform the cell handover configuration method according to the embodiment of the present invention. That is, when the UE detects that the signal quality of the neighboring cell of its cell reaches a preset threshold, the UE reports a signal measurement report to the source base station, so that the source base station selects a candidate base station according to the signal measurement report, and then sends the indication information to the candidate base station, The candidate base station is controlled to perform RRC configuration on the UE in the candidate cell or not to perform RRC configuration on the UE. The selection of the candidate base station is not limited to the signal measurement report reported by the UE, and other base stations in the preset area where the source base station is located may also be used as candidate base stations.

Step 12: Send handover information to the UE according to the operation performed by the candidate base station according to the indication information.

The handover information is used to make the UE perform cell handover according to the handover information. The operation performed by the candidate base station according to the indication information is that the candidate base station performs RRC configuration on the UE in all cells with UE context or in some cells with UE context in the cell of the candidate base station, or does not perform RRC configuration on the UE.

In addition, when the candidate base station performs RRC configuration on the UE in the candidate cell, the candidate base station reserves resources for the UE in the candidate cell; Reserve resources.

In the embodiment of the present invention, since the source base station instructs the candidate base station to perform RRC configuration in all cells with UE context or some cells with UE context in its cells according to the resource conditions of each cell in the candidate base station, or not to perform RRC configuration on UE , a flexible configuration method is realized, and system resources can be fully utilized to reserve resources for the UE to perform cell handover, thereby reducing the handover delay.

Second Embodiment

As shown in FIG. 2, an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 21: The source base station sends an automatic handover preparation request message to the candidate base station.

Wherein, the automatic handover preparation request message carries the indication information and cell information of all cells with UE context in the cells of the candidate base station. The indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or to instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells with UE context in the cell of the candidate base station. A cell or part of a cell with UE context. Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

In addition, the source base station encapsulates the instruction information used to instruct the candidate base station to perform RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the cell information of all cells with UE context in the cell of the candidate base station, An automatic handover preparation request message is formed and sent to the candidate base station. However, the transmission method of the above-mentioned information is not limited to this.

Step 22: Send handover information to the UE according to the operation performed by the candidate base station according to the indication information.

The handover information is used to make the UE perform cell handover according to the handover information.

In this embodiment, the source base station instructs the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or the instruction information that instructs the candidate base station not to perform RRC configuration on the UE is sent to the candidate base station as the carrying information of the automatic handover preparation request message, In addition, the automatic handover preparation request message also carries the information of all cells with UE context in the cell of the candidate base station, so that the candidate base station can know which cells have UE context and which cells do not have UE context, so that It is convenient for the candidate base station to perform related operations.

Third Embodiment

As shown in FIG. 3 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 31: The source base station sends an indication message to the candidate base station.

The indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells of the candidate base station have UEs A cell or part of a context has a cell with a UE context. However, in this embodiment, the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cells are all cells with UE context in the cells of the candidate base station.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

Step 32: Receive the RRC configuration result performed by the candidate base station on the UE in the candidate cell from the automatic handover preparation response message.

Wherein, the RRC configuration result includes cell information of the candidate cell.

That is, when the source base station instructs the candidate base station to perform RRC configuration on the UE in all cells with UE context in the candidate base station's cell, the candidate base station may decide to perform RRC configuration on the UE in one candidate cell or not to perform RRC configuration on the UE, and Decide which RRC configuration to choose when performing RRC configuration; when performing RRC configuration on the UE, the RRC configuration result includes the cell information of the candidate cell and the RRC configuration of the UE; when the RRC configuration is not performed, the RRC configuration result includes the cell information of the candidate cell.

In addition, the candidate base station may send the RRC configuration result to the source base station through an automatic handover response message. Among them, since the candidate base station can perform RRC configuration for the UE in all cells with UE context in the cell of the candidate base station according to the indication information, that is, the candidate base station can reserve for UE in any cell with UE context in its cell Therefore, the configuration result includes cell information of all cells with UE context in the cells of the candidate base station.

Preferably, the cell information includes the physical cell identity and carrier frequency information of the cell.

Step 33: Send handover information to the UE.

Wherein, the handover information includes the RRC configuration result.

In addition, after receiving the automatic handover preparation response message carrying the RRC configuration result, the source base station needs to send the handover information to the UE, and the handover information includes the RRC configuration result. Therefore, the handover information includes all the cells of the candidate base station that have UEs. Cell information of the cell of the context. That is, the handover information includes the physical cell identity of the cell, carrier frequency information and RRC configuration.

In this embodiment, when the source base station instructs the candidate base station to perform RRC configuration on the UE in all cells with the UE context in the candidate base station's cell, the candidate base station may, according to the instruction, perform RRC configuration in all cells with the UE context in the candidate base station's cell. Resources are reserved for the UE, so that the UE can preferentially switch to the cell with reserved resources during subsequent cell handover, thereby reducing the handover delay.

Fourth Embodiment

As shown in FIG. 4 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 41: The source base station sends an indication message to the candidate base station.

The indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells of the candidate base station have UEs A cell or part of a context has a cell with a UE context. However, in this embodiment, the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is a part of the cells of the candidate base station that have the UE context.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

Step 42: Receive the RRC configuration result performed by the candidate base station for the UE in the candidate cell and the cell information of the non-candidate cell with the UE context from the automatic handover preparation response message.

Wherein, the RRC configuration result includes cell information of the candidate cell.

In addition, the candidate cell is the cell of the candidate base station that has the UE context and is instructed to perform RRC configuration, so the non-candidate cell is the cell of the candidate base station except the candidate cell, that is, the non-candidate cell includes cells without UE Context cells and cells with UE context but not indicated for RRC configuration. However, in the embodiment of the present invention, what needs to be acquired is the cell information of the non-candidate cell with the UE context. That is, the cell information of the cell that has the UE context but has not been instructed to perform RRC configuration in the cell of the candidate base station needs to be acquired.

Step 43: Send handover information to the UE.

Wherein, the handover information includes the RRC configuration result and the cell information of the non-candidate cell with UE context.

When the source base station instructs the candidate base station to perform RRC configuration on the UE in some cells of the candidate base station with UE context, the candidate base station may send the RRC configuration result to the source base station through an automatic handover response message. Among them, since the candidate base station can perform RRC configuration for the UE in some cells with UE context among the cells of the candidate base station according to the instruction of the source base station, that is, in some cells of the candidate base station, some cells with UE context reserve resources for the UE , so the configuration result includes the cell information of the cell that has the UE context and is instructed to perform RRC configuration.

In addition, among the cells with UE context of the candidate base station, some of them are instructed to perform RRC configuration, the remaining part is not instructed to perform RRC configuration, and the remaining part of cells (that is, non-candidate cells with UE context) have UE context. context, so that the UE does not need to request related information from the source base station again when performing cell handover. Therefore, the remaining part of cells can also be used as candidate cells for UE to perform cell handover, which can also reduce the handover delay.

Therefore, after the candidate base station performs RRC configuration according to the indication information, it needs to obtain the cell information of the non-candidate cell with the UE context in one step, and send the RRC configuration result together with the obtained cell information of the non-candidate cell with the UE context to the source. base station, and forwarded by the source base station to the UE. Wherein, since the cell information of the non-candidate cell with the UE context is obtained by the candidate base station, the information processing amount of the source base station is reduced.

In this embodiment, since the RRC configuration result includes the cell information of the candidate cell, and the handover information includes the RRC configuration result and the cell information of the non-candidate cell with the UE context, the handover information includes the candidate cell and the cell information with the UE context. Cell information of non-candidate cells. It can be seen that the cells included in the handover information fed back by the source base station to the UE are the cells that are instructed to perform RRC configuration and the cells that are not instructed to perform RRC configuration among the cells with UE context of the candidate base station. Therefore, the implementation of the present invention In the example, there is no duplicate cell information in the handover information fed back to the UE by the source base station, so that the handover information can be fed back to the UE more effectively, thereby saving resources occupied by information transmission.

Fifth Embodiment

As shown in FIG. 5 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 51: The source base station sends an indication message to the candidate base station.

The indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells of the candidate base station have UEs A cell or part of a context has a cell with a UE context. However, in this real-time example, the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is a part of the cells of the candidate base station with UE context.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

Step 52: Receive the RRC configuration result performed by the candidate base station on the UE in the candidate cell from the automatic handover preparation response message.

Wherein, the RRC configuration result includes cell information of the candidate cell.

Step 53: Acquire cell information of non-candidate cells with UE context.

Step 54: Send handover information to the UE.

Wherein, the handover information includes the RRC configuration result and the cell information of the non-candidate cell with UE context.

When the source base station instructs the candidate base station to perform RRC configuration on the UE in some of the cells of the candidate base station that have the UE context, the cell information of the non-candidate cells with the UE context can also be directly encapsulated by the source base station, and then sent to UE, thereby eliminating the tediousness of encapsulation by the candidate base station and then forwarding by the source base station, and reducing signaling transmission.

In addition, in this embodiment, since the RRC configuration result includes the cell information of the candidate cell, and the handover information includes the RRC configuration result and the cell information of the non-candidate cell with the UE context, the handover information includes the candidate cell and the cell with the UE context. Cell information of non-candidate cells. It can be seen that the cells included in the handover information fed back by the source base station to the UE are the cells that are instructed to perform RRC configuration and the cells that are not instructed to perform RRC configuration among the cells with UE context of the candidate base station. Therefore, the implementation of the present invention In the example, there is no duplicate cell information in the handover information fed back to the UE by the source base station, so that the handover information can be fed back to the UE more effectively, thereby saving resources occupied by information transmission.

Sixth Embodiment

As shown in FIG. 6, an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 61: The source base station sends an indication message to the candidate base station.

The indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells of the candidate base station have UEs A cell or part of a context has a cell with a UE context. In this embodiment, the indication information indicates that the candidate base station does not perform RRC configuration on the UE.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

Step 62: Receive cell information of all cells with UE context in the cells of the candidate base station from the automatic handover preparation response message.

Step 63: Send handover information to the UE.

Wherein, the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

When the source base station instructs the candidate base station not to perform RRC configuration on the UE, the candidate base station does not reserve resources for the UE. However, for all cells with the UE context in the candidate base station, the UE does not need to perform cell handover due to the UE context. Go to the source base station to request the relevant information again, so the cell with the UE context can also be used as a candidate cell for the UE to perform cell handover, which can also reduce the handover delay.

Therefore, although the candidate base station does not configure RRC according to the indication information, it can obtain cell information of all cells with UE context in the cell of the candidate base station, and send it to the source base station, which is then forwarded to the UE by the source base station. In addition, in the embodiment of the present invention, since the cell information of all cells with UE context in the cell of the candidate base station is obtained by the candidate base station, the information processing amount of the source base station is reduced.

Seventh Embodiment

As shown in FIG. 7 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 71: The source base station sends an indication message to the candidate base station.

The indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells of the candidate base station have UEs A cell or part of a context has a cell with a UE context. In this embodiment, the indication information indicates that the candidate base station does not perform RRC configuration on the UE.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

Step 72: After receiving the automatic handover preparation response message sent by the candidate base station, obtain cell information of all cells with UE context in the cells of the candidate base station.

Step 73: Send handover information to the UE.

Wherein, the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

When the source base station instructs the candidate base station not to perform RRC configuration on the UE, the cell information of all cells with UE context in the candidate base station's cell can also be directly encapsulated by the active base station and sent to the UE, thus eliminating the need for the candidate base station to perform RRC configuration on the UE. It is cumbersome to encapsulate and then forwarded by the source base station, which reduces the sending of signaling.

To sum up, the embodiments of the present invention can instruct the candidate base station to perform RRC configuration in all cells with UE context or some cells with UE context in its cells, or not to perform RRC configuration on the UE according to the resource conditions of each cell in the candidate base station. The RRC configuration realizes a flexible configuration method, and then can make full use of system resources and reserve resources for the UE to perform cell handover, thereby reducing the handover delay.

Eighth Embodiment

As shown in FIG. 8 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 81: The candidate base station receives an indication message sent by the source base station.

The indication information is used to instruct the candidate base station to perform RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells with UE context in the cell of the candidate base station or Some cells with UE context. Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE CRNTI configuration, and UE dedicated RACH resource configuration.

The cell handover configuration method in the embodiment of the present invention is performed before the UE performs the cell handover, that is, the cell handover configuration method in the present invention is the preparation work before the cell handover. Specifically, for example, when the UE detects that the signal quality of the neighboring cell of the cell where it is located reaches a preset threshold, the UE may trigger the candidate base station to perform the cell handover configuration method according to the embodiment of the present invention.

Step 82: Perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station.

The handover information is used to make the UE perform cell handover according to the handover information. The operation performed by the candidate base station according to the indication information is that the candidate base station performs RRC configuration on the UE in all cells with UE context or in some cells with UE context in the cell of the candidate base station, or does not perform RRC configuration on the UE.

In addition, when the candidate base station performs RRC configuration on the UE in the candidate cell, the candidate base station reserves resources for the UE in the candidate cell; Reserve resources.

In the embodiment of the present invention, since the candidate base station can perform RRC configuration in all cells with UE context or some cells with UE context in its cells according to the instruction of the source base station, or not perform RRC configuration on UE, the flexible In this way, the system resources can be fully utilized to reserve resources for the UE to perform cell handover, thereby reducing the handover delay.

Ninth Embodiment

As shown in FIG. 9 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 91: The candidate base station receives the automatic handover preparation request message sent by the source base station.

Wherein, the automatic handover preparation request message carries the indication information and cell information of all cells with UE context in the cells of the candidate base station. The indication information is used to instruct the candidate base station to perform RRC configuration on the UE in the candidate cell or to instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells or some of the cells with the UE context in the cell of the candidate base station have the UE context. The cell of the UE context. Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE CRNTI configuration, and UE dedicated RACH resource configuration.

In addition, the candidate base station may obtain, from the automatic handover preparation request message sent by the source base station, the instruction information used to instruct the candidate base station to perform RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and all the candidate base stations with Cell information of the cell of the UE context. The specific manner of receiving the above information is not limited to this.

Step 92: Perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station.

The handover information is used to make the UE perform cell handover according to the handover information.

In this embodiment, the instruction information used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or to instruct the candidate base station not to perform RRC configuration on the UE is sent to the candidate base station as the carrying information of the automatic handover preparation request message, The candidate base station can perform related operations according to the indication information. In addition, the automatic handover preparation request message also carries information of all cells with UE context in the cell of the candidate base station, so that the candidate base station can know which cells have UE context and which cells do not have UE context. Therefore, it is convenient for the candidate base station to perform related operations.

Tenth Embodiment

As shown in FIG. 10 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 101: The candidate base station receives an indication message sent by the source base station.

The indication information is used to instruct the candidate base station to perform RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells with UE context in the cell of the candidate base station or Some cells with UE context. In this embodiment, the indication information indicates that the candidate base station performs RRC configuration on the UE in the candidate cell.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE CRNTI configuration, and UE dedicated RACH resource configuration.

Step 102: Feed back the RRC configuration result performed by the candidate base station on the UE in the candidate cell to the source base station through an automatic handover preparation response message, so that the source base station sends handover information to the UE.

The RRC configuration result includes cell information of the candidate cell; specifically, when the source base station instructs the candidate base station to perform RRC configuration on the UE in the candidate cell, the candidate base station may decide to perform RRC configuration on the UE in a candidate cell It is also possible not to perform RRC configuration on the UE, and decide which RRC configuration to choose when performing RRC configuration; when performing RRC configuration on the UE, the RRC configuration result includes the cell information of the candidate cell and the RRC configuration of the UE, and when the RRC configuration is not performed, the RRC configuration The result contains the cell information of the candidate cell.

In addition, when the candidate cell is all cells with UE context in the cell of the candidate base station, the handover information includes the RRC configuration result; when the candidate cell is part of the cell of the candidate base station with UE context In the case of a cell with a UE context, the handover information includes the RRC configuration result and cell information of a non-candidate cell with the UE context.

That is, when the indication information indicates that the candidate base station performs RRC configuration on the UE in the candidate cell, there are two cases as follows:

In case 1, the candidate cell is all cells with UE context among the cells of the candidate base station, then the candidate base station can perform RRC configuration in all cells with UE context according to the indication information, that is, the candidate base station can have UE context in its cells. In any cell, resources are reserved for the UE, and the RRC configuration result including the cell information of all UE context cells in the cell of the candidate base station is sent to the source base station, so that the source base station forwards it to the UE, so that the UE can perform the process when needed. During cell handover, the cells are preferentially handed over to these cells, which reduces the handover delay.

In case 2, if the candidate cell is a cell of the candidate base station with some UE context, the candidate base station can perform RRC configuration in some of the cells with UE context according to the indication information, that is, the candidate base station can configure some UE context in its cell. Resources are reserved for the UE in the cell. Among them, among the cells with UE context of the candidate base station, some are instructed to perform RRC configuration, and the remaining part is not instructed to perform RRC configuration, and the remaining part of the cells (that is, non-candidate cells with UE context) have UE contexts. context, so that the UE does not need to request related information from the source base station again when performing cell handover. Therefore, the remaining part of cells can also be used as candidate cells for UE to perform cell handover, which can also reduce the handover delay. Therefore, the handover information received by the UE includes the RRC configuration result and the cell information of the non-candidate cell with the UE context, and the RRC configuration result includes the cell information of the candidate cell. Therefore, the handover information received by the UE includes Cell information of candidate cells and cell information of non-candidate cells with UE context.

Eleventh Embodiment

As shown in FIG. 11 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 111: The candidate base station receives an indication message sent by the source base station.

The indication information is used to instruct the candidate base station to perform RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells with UE context in the cell of the candidate base station or Some cells with UE context. However, in this embodiment, the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is a part of the cells of the candidate base station that have the UE context.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE CRNTI configuration, and UE dedicated RACH resource configuration.

Step 112: Feed back to the source base station the RRC configuration result performed by the candidate base station on the UE in the candidate cell and the cell information of the non-candidate cell with the UE context to the source base station through an automatic handover preparation response message, so that the source base station sends the information to the source base station. The UE sends handover information.

Wherein, the RRC configuration result includes cell information of the candidate cell; the handover information includes the RRC configuration result and cell information of the non-candidate cell with UE context.

That is, in the embodiment of the present invention, when the source base station instructs the candidate base station to perform RRC configuration on the UE in some of the cells of the candidate base station that have the UE context, the cell information of the non-candidate cell with the UE context can also be directly obtained from The candidate base station is encapsulated, and then sent to the source base station, which is forwarded to the UE by the source base station, thereby reducing the information processing amount of the source base station.

Twelfth Embodiment

As shown in FIG. 12 , an embodiment of the present invention provides a configuration method for cell handover, which specifically includes the following steps:

Step 121: The candidate base station receives an indication message sent by the source base station.

The indication information is used to instruct the candidate base station to perform RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells with UE context in the cell of the candidate base station or Some cells with UE context. In this embodiment, the indication information indicates that the candidate base station does not perform RRC configuration on the UE.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE CRNTI configuration, and UE dedicated RACH resource configuration.

Step 122 : Feed back, to the source base station through an automatic handover preparation response message, the cell information of all cells with UE context in the cells of the candidate base station, so that the source base station sends handover information to the UE.

Wherein, the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

That is, in the embodiment of the present invention, when the source base station instructs the candidate base station not to perform RRC configuration on the UE, the candidate base station may not reserve resources for the UE. , so that the UE does not need to request related information from the source base station again when performing cell handover. Therefore, a cell with UE context can also be used as a candidate cell for UE to perform cell handover, which can also reduce the handover delay. Therefore, although the candidate base station does not configure RRC according to the indication information, it can obtain cell information of all cells with UE context in the cell of the candidate base station, and send it to the source base station, which is then forwarded to the UE by the source base station. Wherein, since the cell information of all cells with UE context in the cells of the candidate base station are obtained by the candidate base station, the information processing amount of the source base station is reduced.

In addition, when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the candidate base station can also directly send a null message of the automatic handover preparation request response to the source base station, thereby triggering the source base station to obtain all the information in the cell of the candidate base station. The cell information with the UE context cell is then forwarded to the UE.

In addition, when the candidate base station performs RRC configuration on the UE in the candidate cell according to the indication information of the source base station, no matter whether the candidate cell is all cells with UE context or some cells with UE context in the cell of the candidate base station, the cell Perform RRC configuration or perform RRC information configuration of different levels and levels for the UE, you can adopt different levels of RRC configuration for the UE or refuse to perform RRC configuration for the UE according to the current resources and the priority of the UE, which are divided into the following types:

Level 1: No RRC configuration is performed on the UE, and the RRC configuration result only includes the physical cell identity and carrier frequency information.

The second level: perform common RRC resource configuration on the UE, and the RRC configuration result includes the physical cell identity, carrier frequency information and common RRC resource configuration.

Level 3: Configure common RRC resources, security parameters, and Cell Radio Network Temporary Identity (C-RNTI) for the UE. The RRC information configuration result includes physical cell identity, carrier frequency information, public RRC resource configuration, and security parameter configuration. , C-RNTI configuration. Dedicated RACH resource configuration may also be performed on the UE, and the RRC information configuration result also includes dedicated RACH resource configuration.

Level 4: Configure common RRC resources, security parameters, C-RNTI, and dedicated RRC resources for the UE. The RRC information configuration result includes physical cell identity, carrier frequency information, public RRC resource configuration and security parameter configuration, C - RNTI configuration. Dedicated RACH resource configuration and/or other dedicated configuration (eg, measurement configuration) may also be performed on the UE, and the RRC information configuration result also includes dedicated RACH resource configuration and/or other dedicated configuration.

It can be seen from the above that the source base station can instruct the candidate base station to perform RRC configuration in all cells with UE context or some cells with UE context in its cells according to the resource conditions of each cell in the candidate base station, or not perform RRC configuration on the UE, so as to achieve In order to provide a flexible configuration method, the candidate base station can also perform RRC configuration according to the current resources of each cell and the UE level.

Thirteenth real-time example

An embodiment of the present invention provides a configuration apparatus for cell handover. As shown in FIG. 13 , the configuration apparatus 130 for cell handover includes:

The instruction sending module 131 is configured to control the source base station to send an instruction message to the candidate base station, where the instruction information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

The feedback module 132 is configured to send handover information to the UE according to the operation performed by the candidate base station according to the indication information, where the handover information is used to make the UE perform cell handover according to the handover information.

Preferably, the indication sending module 131 is specifically configured to: control the source base station to send an automatic handover preparation request message to the candidate base station, where the automatic handover preparation request message carries the indication information and all cells of the candidate base station with Cell information of the cell of the UE context.

Preferably, when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cells are all cells with UE context in the cells of the candidate base station, the feedback module 132 includes:

a first receiving unit, configured to receive, from an automatic handover preparation response message, an RRC configuration result performed by the candidate base station on the UE in the candidate cell, where the RRC configuration result includes cell information of the candidate cell;

A first sending unit, configured to send handover information to the UE, where the handover information includes the RRC configuration result.

Preferably, when the indication information indicates that the candidate base station performs RRC configuration in the candidate cell, and the candidate cell is a part of the cells of the candidate base station with UE context, the feedback module 132 includes:

The second receiving unit is configured to receive, from the automatic handover preparation response message, the RRC configuration result performed by the candidate base station on the UE in the candidate cell and the cell information of the non-candidate cell with the UE context, wherein the RRC configuration The result includes cell information of the candidate cell;

The second sending unit is configured to send handover information to the UE, where the handover information includes the RRC configuration result and cell information of a non-candidate cell with UE context.

Preferably, when the indication information indicates that the candidate base station performs RRC configuration in the candidate cell, and the candidate cell is a part of the cells of the candidate base station with UE context, the feedback module 132 includes:

a third receiving unit, configured to receive, from an automatic handover preparation response message, an RRC configuration result performed by the candidate base station on the UE in the candidate cell, wherein the RRC configuration result includes cell information of the candidate cell;

a first acquiring unit, configured to acquire cell information of a non-candidate cell with UE context;

A third sending unit, configured to send handover information to the UE, where the handover information includes the RRC configuration result and cell information of a non-candidate cell with UE context.

Preferably, when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the feedback module 132 includes:

a fourth receiving unit, configured to receive cell information of all cells with UE context in the cells of the candidate base station from the automatic handover preparation response message;

The fourth sending unit is configured to send handover information to the UE, wherein the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

Preferably, when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the feedback module 132 includes:

a fifth receiving unit, configured to acquire cell information of all cells with UE context in the cells of the candidate base station after receiving the automatic handover preparation response message sent by the candidate base station;

A fifth sending unit, configured to send handover information to the UE, where the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

Fourteenth Embodiment

An embodiment of the present invention further provides a configuration device for cell handover. As shown in FIG. 14 , the configuration device 140 for cell handover includes:

The instruction receiving module 141 is configured to control the candidate base station to receive an instruction message sent by the source base station, where the instruction information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE , the candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

A configuration module 142, configured to perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, and the handover information is used to make the UE perform the handover information according to the handover information. Cell handover.

Preferably, the instruction receiving module 141 is specifically configured to:

The candidate base station receives an automatic handover preparation request message sent by the source base station, where the automatic handover preparation request message carries the indication information and cell information of all cells with UE context in the cells of the candidate base station.

Preferably, when the indication information indicates that the candidate base station performs RRC configuration on the UE in the candidate cell, the configuration module 142 includes:

A first message sending unit, configured to feed back the RRC configuration result performed by the candidate base station on the UE in the candidate cell to the source base station through an automatic handover preparation response message, so that the source base station sends the handover information to the UE, so that the source base station sends the handover information to the UE. The RRC configuration result includes cell information of the candidate cell;

Wherein, when the candidate cells are all cells with UE context in the cells of the candidate base station, the handover information includes the RRC configuration result;

When the candidate cell is part of the cells of the candidate base station with UE context, the handover information includes the RRC configuration result and cell information of the non-candidate cell with UE context.

Preferably, when the indication information indicates that the candidate base station performs RRC configuration in the candidate cell, and the candidate cell is a part of the cells of the candidate base station with UE context, the configuration module 142 includes:

The second message sending unit is configured to feed back, to the source base station through an automatic handover preparation response message, the RRC configuration result performed by the candidate base station on the UE in the candidate cell and the cell information of the non-candidate cell with the UE context, so that sending, by the source base station, handover information to the UE;

Wherein, the RRC configuration result includes cell information of the candidate cell;

The handover information includes the RRC configuration result and cell information of a non-candidate cell with UE context.

Preferably, when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the configuration module 142 includes:

a third message sending unit, configured to feed back, to the source base station through an automatic handover preparation response message, cell information of all cells with UE context in the cells of the candidate base station, so that the source base station sends handover information to the UE;

Wherein, the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

Preferably, the RRC configuration includes one or more of public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network temporary identity configuration, and UE dedicated random access channel resource configuration.

fifteenth embodiment

Corresponding to the above configuration method applied to the cell handover on the source base station side, this embodiment provides a corresponding base station, as shown in FIG. 15 , which specifically includes:

The transmitter 151 is configured to implement the following functions: sending an indication information to the candidate base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

A processor 152, connected to the transmitter 151, is configured to send handover information to the UE according to the operation performed by the candidate base station according to the indication information, where the handover information is used to make the UE perform cell handover according to the handover information .

The device embodiment of the present invention is a device corresponding to the above method embodiment, and all the implementation means in the above method embodiment are applicable to the device embodiment, and can also achieve the same technical effect.

Sixteenth Embodiment

Corresponding to the above configuration method applied to the cell handover on the candidate base station side, this embodiment provides a corresponding base station, as shown in FIG. 16 , which specifically includes:

The receiver 161 is configured to implement the following function: receiving indication information sent by the source base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE , the candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

A processor 162, connected to the receiver 161, is configured to perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, where the handover information is used for The UE is made to perform cell handover according to the handover information.

The device embodiment of the present invention is a device corresponding to the above method embodiment, and all the implementation means in the above method embodiment are applicable to the device embodiment, and can also achieve the same technical effect.

To sum up, for the UE, the source base station and the candidate base station, when the configuration method for cell handover is performed, the specific implementation methods can be divided into the following five types:

Method 1, as shown in Figure 17:

Step 171: The source base station requests the candidate base station to perform RRC configuration on the UE in all cells with UE context in the cell of the candidate base station through the automatic handover preparation request message; wherein, the automatic handover request message carries the candidate base station in all cells with UE context. The cell information of the cell of the context, the source base station is the base station accessed by the UE;

Step 172: The candidate base station performs RRC configuration for the UE in all cells with UE context in the cell of the candidate base station according to the automatic handover request message; wherein, the RRC configuration includes: public RRC resource configuration, dedicated RRC resource configuration, UE security parameters, One or more of the CRNTI of the UE and the dedicated RACH resource configuration of the UE.

Step 173: The candidate base station sends the RRC configuration result to the source base station through an automatic handover preparation response message, and the RRC configuration result includes cell information of all cells with UE context in the cells of the candidate base station;

Step 174: The source base station sends handover information to the UE, and the handover information includes the RRC configuration result.

That is, in this embodiment, during the automatic handover preparation process, the source base station instructs the candidate base station to perform RRC configuration on all cells with UE context in the candidate base station's cells. Among them, since the source base station requests the candidate base station to perform RRC configuration on the UE for all cells with UE context in the candidate base station's cell, all cells with UE context in the candidate base station's cell will feed back the RRC configuration result to the source base station. The information of cells with UE context in the cell of the candidate base station is already included, and the source base station forwards the RRC information result sent by the candidate base station to the UE, so the source base station does not need to generate additional information of all cells with UE context in the candidate base station and send it to the UE .

Method 2, as shown in Figure 18:

Step 181: The source base station requests the candidate base station to perform RRC configuration on the UE in some cells with UE context among the cells of the candidate base station through the automatic handover preparation request message; wherein, the source base station is the base station accessed by the UE, and the automatic handover request message cell information of all cells with UE context in the cell carrying the candidate base station;

Step 182: The candidate base station configures the RRC information for the UE in some cells of the candidate base station that have the UE context according to the automatic handover request message;

Step 183: The candidate base station generates cell information of non-candidate cells with UE context;

Step 184: The candidate base station sends the RRC configuration result and the cell information of the non-candidate cell with the UE context to the source base station through the automatic handover preparation response message; wherein, the RRC information configuration includes: public RRC resource configuration, dedicated RRC resource configuration, UE One or more of the security parameter configuration of the UE, the CRNTI configuration of the UE, and the dedicated RACH resource configuration of the UE; the information of the cell includes: the physical layer cell identity and carrier frequency information of the cell;

Step 185: The source base station sends the RRC configuration result and the cell information of the non-candidate cell with the UE context to the UE.

Method 3, as shown in Figure 19:

Step 191: The source base station requests the candidate base station to perform RRC configuration on the UE in some cells with UE context among the cells of the candidate base station through the automatic handover preparation request message; wherein, the source base station is the base station accessed by the UE, and the automatic handover request message cell information of all cells with UE context in the cell carrying the candidate base station;

Step 192: The candidate base station configures the RRC information for the UE in some cells of the candidate base station that have the UE context in the cell of the candidate base station according to the automatic handover request message;

Step 193: The candidate base station sends the RRC information result to the source base station through the automatic handover preparation response message; wherein, the RRC information configuration includes: public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE CRNTI configuration, UE's One or more of dedicated RACH resource configurations; the information of the cell includes: the physical layer cell identifier and carrier frequency information of the cell;

Step 194: the source base station generates cell information of non-candidate cells with UE context;

Step 195: The source base station sends the RRC information result and the cell information of the non-candidate cell with the UE context to the UE.

Method 4, as shown in Figure 20:

Step 201: the source base station instructs the candidate base station not to perform RRC configuration on the UE through the automatic handover preparation request message; wherein, the source base station is the base station accessed by the UE, and the automatic handover request message carries all the cells with the UE context in the cells of the candidate base station community information;

Step 202: The candidate base station does not perform RRC information configuration on the UE according to the automatic handover request message;

Step 203: Generate information of all cells with UE context in cells with candidate base stations;

Step 204: the candidate base station sends the information of all cells with UE context in the cell of the candidate base station to the source base station through the automatic handover preparation response message; the information of the cell includes: the physical layer cell identifier and carrier frequency information of the cell;

Step 205: The source base station sends the information of all cells with UE context in the cell of the candidate base station to the UE.

Method 5, as shown in Figure 21:

Step 211: the source base station instructs the candidate base station not to perform RRC configuration on the UE through the automatic handover preparation request message; wherein, the source base station is the base station accessed by the UE, and the automatic handover request message carries all cells with the UE context in the cells of the candidate base station community information;

Step 212: The candidate base station does not perform RRC information configuration on the UE according to the automatic handover request message;

Step 213: Send an automatic handover preparation response to the source base station;

Step 214: the source base station generates all cell information with UE context in the cell with the candidate base station; the cell information includes: the physical layer cell identifier and carrier frequency information of the cell;

Step 215: The source base station sends the information of all cells with UE context in the cell of the candidate base station to the UE.

In a word, the configuration method for cell handover according to the embodiment of the present invention enables the source base station to instruct the candidate base station to reserve dedicated resources in the handover preparation for automatic handover, and to indicate the cell that successfully reserved resources to the UE, so that the UE can preferentially select the cell handover. The cell with reserved resources is used as the target cell for automatic handover, which reduces the handover delay.

In addition, it should be pointed out that, in the apparatus and method of the present invention, obviously, each component or each step can be decomposed and/or recombined. These disaggregations and/or recombinations should be considered as equivalents of the present invention. Also, the steps of executing the above-described series of processes can naturally be executed in chronological order in the order described, but need not necessarily be executed in chronological order. Certain steps may be performed in parallel or independently of each other.

A1. A configuration method for cell handover, comprising:

The source base station sends an indication information to the candidate base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: the All cells with UE context or some cells with UE context in the cells of the candidate base station;

According to the operation performed by the candidate base station according to the indication information, handover information is sent to the UE, where the handover information is used to make the UE perform cell handover according to the handover information.

A2. The configuration method for cell handover according to claim A1, wherein the step of the source base station sending an indication message to the candidate base station comprises:

The source base station sends an automatic handover preparation request message to the candidate base station, where the automatic handover preparation request message carries the indication information and cell information of all cells with UE context in the cells of the candidate base station.

A3. The configuration method for cell handover according to claim A1, wherein when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is a cell of the candidate base station In all cells with UE context, according to the operation performed by the candidate base station according to the indication information, the step of sending handover information to the UE includes:

receiving an RRC configuration result performed by the candidate base station on the UE in the candidate cell from an automatic handover preparation response message, where the RRC configuration result includes cell information of the candidate cell;

Send handover information to the UE, where the handover information includes the RRC configuration result.

A4. The configuration method for cell handover according to claim A1, wherein when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is a cell of the candidate base station When there are some cells with UE context, according to the operation performed by the candidate base station according to the indication information, the step of sending handover information to the UE includes:

Receive the RRC configuration result of the candidate base station for the UE in the candidate cell and the cell information of the non-candidate cell with UE context from the automatic handover preparation response message, wherein the RRC configuration result includes the candidate cell community information;

Send handover information to the UE, where the handover information includes the RRC configuration result and cell information of a non-candidate cell with UE context.

A5. The configuration method for cell handover according to claim A1, wherein when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is a cell of the candidate base station When there are some cells with UE context, according to the operation performed by the candidate base station according to the indication information, the step of sending handover information to the UE includes:

receiving, from the automatic handover preparation response message, an RRC configuration result performed by the candidate base station on the UE in the candidate cell, wherein the RRC configuration result includes cell information of the candidate cell;

Obtain cell information of non-candidate cells with UE context;

Send handover information to the UE, where the handover information includes the RRC configuration result and cell information of a non-candidate cell with UE context.

A6. The configuration method for cell handover according to claim A1, wherein when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, according to the operation performed by the candidate base station according to the indication information, The step of sending handover information to the UE includes:

Receive cell information of all cells with UE context in the cells of the candidate base station from the automatic handover preparation response message;

Send handover information to the UE, wherein the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

A7. The configuration method for cell handover according to claim A1, wherein, when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the execution according to the candidate base station according to the indication information Operation, the steps of sending handover information to the UE include:

After receiving the automatic handover preparation response message sent by the candidate base station, obtain cell information of all cells with UE context in the cells of the candidate base station;

Send handover information to the UE, where the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

A8. The configuration method for cell handover according to any one of claims A1 to A7, wherein the RRC configuration includes a public RRC resource configuration, a dedicated RRC resource configuration, a security parameter configuration of the UE, a cell radio network of the UE One or more of temporary identity configuration and dedicated random access channel resource configuration of the UE.

B9. A configuration method for cell handover, comprising:

The candidate base station receives an indication message sent by the source base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: All cells with UE context or some cells with UE context in the cells of the candidate base station;

A corresponding operation is performed according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, where the handover information is used to make the UE perform cell handover according to the handover information.

B10. The configuration method for cell handover according to claim B9, wherein the step of the candidate base station receiving an indication message sent by the source base station comprises:

The candidate base station receives an automatic handover preparation request message sent by the source base station, where the automatic handover preparation request message carries the indication information and cell information of all cells with UE context in the cells of the candidate base station.

B11. The configuration method for cell handover according to claim B9, wherein when the indication information instructs the candidate base station to perform RRC configuration on the UE in the candidate cell, the corresponding operation is performed according to the indication information , the step of making the source base station send the handover information to the UE according to the corresponding operation performed by the candidate base station, including:

The RRC configuration result performed by the candidate base station on the UE in the candidate cell is fed back to the source base station through an automatic handover preparation response message, so that the source base station sends handover information to the UE, where the RRC configuration result includes the cell information of the candidate cell;

Wherein, when the candidate cells are all cells with UE context in the cells of the candidate base station, the handover information includes the RRC configuration result;

When the candidate cell is part of the cells of the candidate base station with UE context, the handover information includes the RRC configuration result and cell information of the non-candidate cell with UE context.

B12. The configuration method for cell handover according to claim B9, wherein when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is a cell of the candidate base station When there are some cells with UE context, the step of performing a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, includes:

Feedback the RRC configuration result of the candidate base station on the UE in the candidate cell and the cell information of the non-candidate cell with the UE context to the source base station through an automatic handover preparation response message, so that the source base station sends the handover to the UE. information;

Wherein, the RRC configuration result includes cell information of the candidate cell;

The handover information includes the RRC configuration result and cell information of a non-candidate cell with UE context.

B13. The configuration method for cell handover according to claim B9, wherein when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the corresponding operation is performed according to the indication information, so that the The step of sending the handover information to the UE by the source base station according to the corresponding operation performed by the candidate base station includes:

Feedback, to the source base station through an automatic handover preparation response message, the cell information of all cells with UE context in the cells of the candidate base station, so that the source base station sends handover information to the UE;

Wherein, the handover information includes cell information of all cells with UE context in the cells of the candidate base station.

B14. The configuration method for cell handover according to any one of claims B9 to B13, wherein the RRC configuration includes public RRC resource configuration, dedicated RRC resource configuration, UE security parameter configuration, UE cell radio network One or more of temporary identity configuration and dedicated random access channel resource configuration of the UE.

C15. A configuration device for cell handover, comprising:

The instruction sending module is used to control the source base station to send an instruction information to the candidate base station, the instruction information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, so The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

A feedback module, configured to send handover information to the UE according to the operation performed by the candidate base station according to the indication information, where the handover information is used to make the UE perform cell handover according to the handover information.

D16. A configuration device for cell handover, comprising:

an indication receiving module, configured to control the candidate base station to receive an indication message sent by the source base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

a configuration module, configured to perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, and the handover information is used to enable the UE to perform cell switching according to the handover information. switch.

E17. A base station, comprising:

a transmitter, configured to implement the following functions: sending an indication information to the candidate base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, so The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

A processor, connected to the transmitter, configured to send handover information to the UE according to the operation performed by the candidate base station according to the indication information, where the handover information is used to make the UE perform cell handover according to the handover information.

F18. A base station, characterized by comprising:

a receiver, configured to implement the following functions: receiving indication information sent by the source base station, where the indication information is used to instruct the candidate base station to perform radio link control RRC configuration on the UE in the candidate cell or instruct the candidate base station not to perform RRC configuration on the UE, The candidate cells are: all cells with UE context or some cells with UE context in the cells of the candidate base station;

a processor, connected to the receiver, and configured to perform a corresponding operation according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station, where the handover information is used to make the UE Cell handover is performed according to the handover information.

The above are the preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also included in the present invention. within the scope of protection of the invention.

Claims (16)

1. A method for configuring cell handover, comprising:

the source base station sends an indication message to the candidate base station, wherein the indication message is used for indicating the candidate base station to perform radio link control (RRC) configuration on the UE in the candidate cell or indicating the candidate base station not to perform RRC configuration on the UE, and the candidate cell is as follows: all cells or part of cells with UE contexts in the cells of the candidate base station are cells with UE contexts, wherein when the candidate cells are the cells with UE contexts in the cells of the candidate base station, the candidate cells are the cells which have UE contexts in the cells of the candidate base station and are instructed to carry out RRC configuration;

sending switching information to the UE according to the operation executed by the candidate base station according to the indication information, wherein the switching information is used for enabling the UE to carry out cell switching according to the switching information;

when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell and the candidate cell is a cell having a UE context in a cell of the candidate base station, sending handover information to the UE according to an operation performed by the candidate base station according to the indication information, including:

receiving an RRC configuration result of the candidate base station for the UE in the candidate cell from an automatic handover preparation response message, wherein the RRC configuration result comprises cell information of the candidate cell;

acquiring cell information of a non-candidate cell having a UE context;

and sending switching information to the UE, wherein the switching information comprises the RRC configuration result and cell information of the non-candidate cell with the UE context.

2. The method of claim 1, wherein the step of the source base station sending an indication message to the candidate base station comprises:

and the source base station sends an automatic switching preparation request message to the candidate base station, wherein the automatic switching preparation request message carries the indication information and cell information of all cells with UE context in the cells of the candidate base station.

3. The method according to claim 1, wherein when the indication information indicates that the candidate base station performs RRC configuration in the candidate cell and the candidate cell is all cells with UE context in the cells of the candidate base station, the step of sending handover information to the UE according to the operation performed by the candidate base station according to the indication information comprises:

receiving an RRC configuration result of the candidate base station for the UE in the candidate cell from an automatic handover preparation response message, wherein the RRC configuration result comprises cell information of the candidate cell;

and sending switching information to the UE, wherein the switching information comprises the RRC configuration result.

4. The method according to claim 1, wherein when the indication information indicates that the candidate base station performs RRC configuration in the candidate cell and the candidate cell is a cell with a UE context in a part of cells of the candidate base station, the step of sending handover information to the UE according to an operation performed by the candidate base station according to the indication information includes:

receiving an RRC configuration result of the candidate base station for the UE in the candidate cell and cell information of a non-candidate cell with a UE context from an automatic handover preparation response message, wherein the RRC configuration result comprises the cell information of the candidate cell;

and sending switching information to the UE, wherein the switching information comprises the RRC configuration result and cell information of the non-candidate cell with the UE context.

5. The method of claim 1, wherein when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the step of sending handover information to the UE according to an operation performed by the candidate base station according to the indication information comprises:

receiving cell information of all cells having a UE context among the cells of the candidate base station from an automatic handover preparation response message;

and sending switching information to the UE, wherein the switching information comprises cell information of all cells with UE context in the cells of the candidate base station.

6. The method of claim 1, wherein when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the step of sending the handover information to the UE according to the operation performed by the candidate base station according to the indication information comprises:

after receiving an automatic switching preparation response message sent by the candidate base station, acquiring cell information of all cells with UE context in the cells of the candidate base station;

and sending switching information to the UE, wherein the switching information comprises cell information of all cells with UE context in the cells of the candidate base station.

7. The method according to any of claims 1 to 6, wherein the RRC configuration comprises one or more of a common RRC resource configuration, a dedicated RRC resource configuration, a UE security parameter configuration, a UE cell radio network temporary identity configuration, and a UE dedicated random access channel resource configuration.

8. A method for configuring cell handover, comprising:

the candidate base station receives an indication message sent by the source base station, where the indication message is used to indicate the candidate base station to perform radio link control (RRC) configuration on the UE in a candidate cell or indicate the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells or part of cells with UE contexts in the cells of the candidate base station are cells with UE contexts, wherein when the candidate cells are the cells with UE contexts in the cells of the candidate base station, the candidate cells are the cells which have UE contexts in the cells of the candidate base station and are instructed to carry out RRC configuration;

executing corresponding operation according to the indication information, so that the source base station sends switching information to the UE according to the corresponding operation executed by the candidate base station, wherein the switching information is used for enabling the UE to carry out cell switching according to the switching information;

when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell and the candidate cell is a cell having a UE context in a cell of the candidate base station, the step of executing corresponding operation according to the indication information so that the source base station sends handover information to the UE according to the corresponding operation executed by the candidate base station includes:

feeding back an RRC configuration result of the candidate base station on the UE in the candidate cell and cell information of a non-candidate cell with UE context to the source base station through an automatic switching preparation response message, so that the source base station sends switching information to the UE;

wherein the RRC configuration result comprises cell information of the candidate cell;

the handover information includes the RRC configuration result and cell information of a non-candidate cell having a UE context.

9. The method of claim 8, wherein the step of receiving an indication message from the source base station by the candidate base station comprises:

and the candidate base station receives an automatic switching preparation request message sent by a source base station, wherein the automatic switching preparation request message carries the indication information and cell information of all cells with UE context in the cells of the candidate base station.

10. The method according to claim 8, wherein when the indication information indicates the candidate base station to perform RRC configuration on the UE in the candidate cell, the step of performing corresponding operation according to the indication information so that the source base station sends the handover information to the UE according to the corresponding operation performed by the candidate base station includes:

feeding back an RRC configuration result of the candidate base station for the UE in the candidate cell to the source base station through an automatic switching preparation response message, so that the source base station sends switching information to the UE, wherein the RRC configuration result comprises cell information of the candidate cell;

wherein, when the candidate cell is all cells with UE context in the cell of the candidate base station, the switching information includes the RRC configuration result;

when the candidate cell is a cell with a UE context in a part of the cells of the candidate base station, the handover information includes the RRC configuration result and cell information of a non-candidate cell with a UE context.

11. The method according to claim 8, wherein when the indication information indicates that the candidate base station does not perform RRC configuration on the UE, the step of performing corresponding operation according to the indication information so that the source base station sends handover information to the UE according to the corresponding operation performed by the candidate base station includes:

feeding back all cell information of cells with UE context in the cells of the candidate base station to the source base station through an automatic switching preparation response message, so that the source base station sends switching information to the UE;

wherein the handover information includes cell information of all cells having the UE context cell in the cells of the candidate base station.

12. The method according to any of claims 8 to 11, wherein the RRC configuration includes one or more of a common RRC resource configuration, a dedicated RRC resource configuration, a security parameter configuration of the UE, a cell radio network temporary identity configuration of the UE, and a dedicated random access channel resource configuration of the UE.

13. An apparatus for configuring a cell handover, comprising:

an indication sending module, configured to control a source base station to send an indication message to a candidate base station, where the indication message is used to indicate the candidate base station to perform radio link control RRC configuration on a UE in a candidate cell or indicate the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells or part of cells with UE contexts in the cells of the candidate base station are cells with UE contexts, wherein when the candidate cells are the cells with UE contexts in the cells of the candidate base station, the candidate cells are the cells which have UE contexts in the cells of the candidate base station and are instructed to carry out RRC configuration;

a feedback module, configured to send handover information to the UE according to an operation performed by the candidate base station according to the indication information, where the handover information is used to enable the UE to perform cell handover according to the handover information;

the feedback module is further configured to receive an RRC configuration result of the candidate base station for the UE in the candidate cell from an automatic handover preparation response message when the indication information indicates that the candidate base station performs RRC configuration in the candidate cell and the candidate cell is a cell with a UE context in a cell of the candidate base station, where the RRC configuration result includes cell information of the candidate cell; acquiring cell information of a non-candidate cell having a UE context; and sending switching information to the UE, wherein the switching information comprises the RRC configuration result and cell information of the non-candidate cell with the UE context.

14. An apparatus for configuring a cell handover, comprising:

an indication receiving module, configured to control a candidate base station to receive indication information sent by a source base station, where the indication information is used to indicate the candidate base station to perform radio link control RRC configuration on a UE in a candidate cell or indicate the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells or part of cells with UE contexts in the cells of the candidate base station are cells with UE contexts, wherein when the candidate cells are the cells with UE contexts in the cells of the candidate base station, the candidate cells are the cells which have UE contexts in the cells of the candidate base station and are instructed to carry out RRC configuration;

a configuration module, configured to execute corresponding operations according to the indication information, so that the source base station sends handover information to the UE according to the corresponding operations executed by the candidate base station, where the handover information is used for enabling the UE to perform cell handover according to the handover information;

the configuration module is further configured to, when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell and the candidate cell is a cell with a UE context in a cell of the candidate base station, feed back, to the source base station, an RRC configuration result of the candidate base station for the UE in the candidate cell and cell information of a non-candidate cell with the UE context through an automatic handover preparation response message, so that the source base station sends handover information to the UE; wherein the RRC configuration result comprises cell information of the candidate cell; the handover information includes the RRC configuration result and cell information of a non-candidate cell having a UE context.

15. A base station, comprising:

a transmitter for implementing the following functions: sending an indication message to the candidate base station, where the indication message is used to indicate the candidate base station to perform radio link control (RRC) configuration on the UE in the candidate cell or indicate the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells or part of cells with UE contexts in the cells of the candidate base station are cells with UE contexts, wherein when the candidate cells are the cells with UE contexts in the cells of the candidate base station, the candidate cells are the cells which have UE contexts in the cells of the candidate base station and are instructed to carry out RRC configuration;

a processor connected to the transmitter, configured to send handover information to the UE according to an operation performed by the candidate base station according to the indication information, where the handover information is used to enable the UE to perform cell handover according to the handover information;

the processor is further configured to receive an RRC configuration result of the candidate base station for the UE in the candidate cell from an automatic handover preparation response message when the indication information indicates that the candidate base station performs RRC configuration in the candidate cell and the candidate cell is a cell with a UE context in a part of cells of the candidate base station, where the RRC configuration result includes cell information of the candidate cell; acquiring cell information of a non-candidate cell having a UE context; and sending switching information to the UE, wherein the switching information comprises the RRC configuration result and cell information of the non-candidate cell with the UE context.

16. A base station, comprising:

a receiver for implementing the following functions: receiving indication information sent by a source base station, where the indication information is used to indicate a candidate base station to perform radio link control (RRC) configuration on UE in a candidate cell or indicate the candidate base station not to perform RRC configuration on the UE, and the candidate cell is: all cells or part of cells with UE contexts in the cells of the candidate base station are cells with UE contexts, wherein when the candidate cells are the cells with UE contexts in the cells of the candidate base station, the candidate cells are the cells which have UE contexts in the cells of the candidate base station and are instructed to carry out RRC configuration;

a processor, connected to the receiver, configured to execute a corresponding operation according to the indication information, so that the source base station sends, according to the corresponding operation executed by the candidate base station, handover information to the UE, where the handover information is used to enable the UE to perform cell handover according to the handover information;

the processor is further configured to, when the indication information indicates that the candidate base station performs RRC configuration in a candidate cell and the candidate cell is a cell with a UE context in a part of cells of the candidate base station, feed back, to the source base station, an RRC configuration result of the candidate base station for the UE in the candidate cell and cell information of a non-candidate cell with the UE context through an automatic handover preparation response message, so that the source base station sends handover information to the UE; wherein the RRC configuration result comprises cell information of the candidate cell; the handover information includes the RRC configuration result and cell information of a non-candidate cell having a UE context.

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