CN108738081B

CN108738081B - Configuration method and device for cell switching and base station

Info

Publication number: CN108738081B
Application number: CN201710267740.5A
Authority: CN
Inventors: 路杨; 周明宇
Original assignee: Beijing Bai Caibang Technology Co ltd
Current assignee: Baicells Technologies Co Ltd
Priority date: 2017-04-21
Filing date: 2017-04-21
Publication date: 2020-12-22
Anticipated expiration: 2037-04-21
Also published as: CN108738081A; WO2018192356A1

Abstract

The invention provides a cell switching configuration method, a device and a base station, wherein the cell switching configuration method at a source base station side comprises the following steps: the source base station sends an indication message to the candidate base station, 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 with UE context or part of cells with UE context in the cells of the candidate base station; and 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. Therefore, the scheme of the invention can control the candidate base station to carry out RRC configuration, thereby solving the problems that in the prior art, the RRC configuration mode is inflexible in the cell switching preparation process, the utilization rate of system resources is not high enough, and the cell switching time delay is still long.

Description

Configuration method and device for cell switching and base station

Technical Field

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

Background

MulteFire is a radio access technology that extends LTE to unlicensed bands, in which unlicensed band carriers can independently provide services without the help of licensed band carriers. In order to fairly occupy the unlicensed band channel and avoid mutual interference between other devices in the unlicensed band (e.g., WiFi devices), the MF physical layer introduces a Listen-Before-Talk (LBT) mechanism of carrier sensing technology similar to WiFi. When the base station or the terminal monitors that the unlicensed frequency band channel is occupied, namely LBT fails, the signal is stopped being sent, and when the channel is monitored to be idle, namely LBT succeeds, the signal is sent.

In order to improve the transmission efficiency of downlink common control signals of a base station under an LBT mechanism, MulteFire introduces a Discovery Reference Signal (DRS), and the DRS includes main downlink common control signals including System broadcast, Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), enhanced Primary synchronization Signal (ePSS), enhanced Secondary synchronization Signal (eSSS), Cell Reference Signal (CRS), main System Information Block (MIB) and enhanced System Information Block (SIB-MF). Wherein, the DRS occupies 12 or 14 symbols (symbols) in one downlink subframe. The terminal may receive the DRS for downlink synchronization, receive the MIB and the SIB-MF within a Discovery Signals Measurement Configuration (DMTC) window. The MulteFire cell transmits the CRS only in a DRS subframe or other subframes transmitted by a Physical Downlink Shared Channel (PDSCH). Therefore, the terminal can perform channel measurement on the MulteFire serving cell or the MulteFire neighbor cell only in 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 meets the handover condition, if the channel is monitored to be occupied according to the LBT mechanism, the measurement report cannot be sent, and similarly, after the Multefire cell receives the measurement report of the terminal, if the channel is monitored to be occupied according to the LBT mechanism, the handover command cannot be sent, which results in too large handover delay. Therefore, a terminal automatic switching is supported in the Multefire system, when the terminal detects that the channel quality of the current access cell and the channel quality of the adjacent cell meet the switching condition, the terminal can automatically initiate the random access to the target cell without waiting for receiving the switching command of the current access cell, namely when the terminal detects that the channel quality of the current access cell and the channel quality of the adjacent cell meet the switching condition, the terminal does not need to send a measurement report to the current cell and wait for the switching command of the current cell so as to reduce the switching time delay.

However, although the above automatic handover method reduces the waiting time, in the handover process of the terminal, the terminal still needs to perform some handover preparation work to perform cell handover, so that the handover time domain is still long.

In addition, in order to further reduce the handover delay, another terminal automatic handover is also supported in the Multefire system, that is, when the terminal detects that the signal quality of the automatic handover measurement object meets the measurement report condition of the automatic handover, a measurement report is sent to the base station and an automatic handover timer is started, and the base station initiates traditional handover preparation to the target cell and sends a handover command to the terminal after receiving the measurement report. If the terminal receives a switching command sent by the base station before the automatic switching timer is overtime, switching to a target cell indicated in the switching command according to the switching command; otherwise, if the switching timer is overtime and does not receive the switching command, the terminal starts automatic switching.

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

Disclosure of Invention

Embodiments of the present invention provide a cell handover configuration method, an apparatus, and a base station, to solve the problems in the prior art that an RRC configuration mode is inflexible during a cell handover preparation process, so that a system resource utilization rate is low, and a cell handover delay is still long.

The embodiment of the invention provides a configuration method for cell switching, which comprises the following steps:

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 with UE context or part of cells with UE context in the cells of the candidate base station;

and 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.

The embodiment of the invention also provides a configuration method for cell switching, which comprises the following steps:

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 with UE context or part of cells with UE context in the cells of the candidate base station;

and 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.

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

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 with UE context or part of cells with UE context in the cells of the candidate base station;

and the feedback module is used for 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.

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 with UE context or part of cells with UE context in the cells of the candidate base station;

and the configuration module is used for 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, and the switching information is used for enabling the UE to carry out cell switching according to the switching information.

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

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 with UE context or part of cells with UE context in the cells of the candidate base station;

and the processor is connected with the transmitter and used for transmitting 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.

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 with UE context or part of cells with UE context in the cells of the candidate base station;

and the processor is connected with the receiver and used for 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, and the switching information is used for enabling the UE to carry out cell switching according to the switching information.

The embodiment of the invention has the beneficial effects that:

according to the embodiment of the invention, the source base station can indicate the candidate base station to perform RRC configuration on all cells with UE context or part of cells with UE context in the cells of the candidate base station, or not perform RRC configuration on the UE, and the switching information is fed back to the UE according to the operation executed by the candidate base station, so that the UE can perform cell switching according to the switching information, and the UE has a switching basis when cell switching is required, and further the switching speed is improved. The source base station can control partial or all cells with UE context in the candidate base station to carry out RRC configuration or not to carry out RRC configuration on the UE according to the situation, and the candidate base station can also carry out different RRC configurations on the UE according to the resource situation of each cell, so that a flexible configuration mode is realized, system resources can be fully utilized, resources are reserved for the UE to carry out cell switching, and the switching time delay is reduced.

Drawings

Fig. 1 is a flowchart illustrating a method for configuring a cell handover according to a first embodiment of the present invention;

fig. 2 is a flowchart illustrating a method for configuring a cell handover according to a second embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for configuring a cell handover according to a third embodiment of the present invention;

fig. 4 is a flowchart illustrating a method for configuring a cell handover according to a fourth embodiment of the present invention;

fig. 5 is a flowchart illustrating a method for configuring a cell handover according to a fifth embodiment of the present invention;

fig. 6 is a flowchart illustrating a method for configuring a cell handover according to a sixth embodiment of the present invention;

fig. 7 is a flowchart illustrating a method for configuring a cell handover according to a seventh embodiment of the present invention;

fig. 8 is a flowchart illustrating a method for configuring a cell handover according to an eighth embodiment of the present invention;

fig. 9 is a flowchart illustrating a method for configuring a cell handover according to a ninth embodiment of the present invention;

fig. 10 is a flowchart illustrating a method for configuring a cell handover according to a tenth embodiment of the present invention;

fig. 11 is a flowchart illustrating a method for configuring a cell handover according to an eleventh embodiment of the present invention;

fig. 12 is a flowchart illustrating a method for configuring a cell handover according to a twelfth embodiment of the present invention;

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

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

fig. 15 is a block diagram showing a configuration of a base station according to a fifteenth embodiment of the present invention;

fig. 16 is a block diagram showing a configuration of a base station according to a sixteenth embodiment of the present invention;

FIG. 17 is a flowchart illustrating a specific real-time method for configuring a UE, a source base station and a candidate base station for cell handover according to the present invention;

FIG. 18 is a second flowchart of a specific real-time method for configuring a UE, a source base station and a candidate base station for cell handover according to the present invention;

FIG. 19 is a third flowchart illustrating a detailed real-time method of configuring a UE, a source base station and a candidate base station for cell handover according to the present invention;

FIG. 20 is a fourth flowchart illustrating a detailed real-time method of configuring a UE, a source base station and a candidate base station for cell handover according to the present invention;

fig. 21 shows a fifth embodiment of a real-time flow chart of the method for configuring a UE, a source base station and a candidate base station for cell handover according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a cell switching configuration method, a device and a base station in the following embodiments, aiming at the problems that in the cell switching preparation process in the prior art, the RRC configuration mode is inflexible, so that the system resource utilization rate is low, and the cell switching time delay is still long. The source base station can control the candidate base station to perform RRC configuration on the UE according to the resource condition of each cell in the candidate base station, so that a flexible configuration mode is realized, system resources can be fully utilized, resources are reserved for the UE to perform cell switching, and switching time delay is reduced.

First embodiment

As shown in fig. 1, an embodiment of the present invention provides a method for configuring 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 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, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. Preferably, 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 (CRNTI) configuration of the UE, and a dedicated random access channel Resource (RACH) configuration of the UE.

The cell handover configuration method according to the embodiment of the present invention is performed before the UE performs cell handover, that is, the cell handover configuration method according to the embodiment of the present invention is a preparation work before cell handover. Specifically, for example, when the UE detects that the signal quality of the neighboring cell of the cell where the UE is located reaches a preset threshold, the UE may be triggered to execute 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 the cell where the UE is located reaches the preset threshold, the UE reports a signal measurement report to the source base station, so that the source base station selects the candidate base station according to the signal measurement report, and further sends the indication information to the candidate base station, and controls the candidate base station to perform RRC configuration on the UE in the candidate cell or not 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 be all used as the candidate base stations.

Step 12: and sending switching information to the UE according to the operation executed by the candidate base station according to the indication information.

And the switching information is used for enabling the UE to carry out cell switching according to the switching information. And the candidate base station performs operation according to the indication information, namely that the candidate base station performs RRC configuration on the UE in all cells with UE context or partial cells with UE context in the cells of the candidate base station, or does not perform RRC configuration on the UE.

In addition, the candidate base station performs RRC configuration on the UE in the candidate cell to configure the candidate base station to reserve resources for the UE in the candidate cell; the candidate base station does not perform RRC configuration on the UE so that the candidate base station does not reserve resources for the UE in any one of the cells of the candidate base station.

In the embodiment of the invention, the source base station indicates the candidate base station to perform RRC configuration on all cells with UE context or part of cells with UE context in the cells of the candidate base station according to the resource condition of each cell in the candidate base station, or does not perform RRC configuration on the UE, so that a flexible configuration mode is realized, system resources can be fully utilized, resources are reserved for the UE to perform cell switching, and the switching time delay is reduced.

Second embodiment

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

step 21: the source base station transmits 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 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 context in the cells of the candidate base station. Preferably, 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.

In addition, the source base station encapsulates indication information for indicating the candidate base station to perform RRC configuration on the UE in the candidate cell or indicating the candidate base station not to perform RRC configuration on the UE, and cell information of all cells with UE context in the cells of the candidate base station to form an automatic handover preparation request message, so as to send the automatic handover preparation request message to the candidate base station. The transmission method of the information is not limited to this.

Step 22: and sending switching information to the UE according to the operation executed by the candidate base station according to the indication information.

And the switching information is used for enabling the UE to carry out cell switching according to the switching 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 instructs the candidate base station not to perform RRC configuration on the UE, and sends the information to the candidate base station as the information carried in the automatic handover preparation request message, and also carries all cell information with UE context in the cell of the candidate base station in the automatic handover preparation request message, so that the candidate base station can know which cells have UE context and which cells do not have UE context in the cell, thereby facilitating the candidate base station to perform related operations.

Third embodiment

As shown in fig. 3, an embodiment of the present invention provides a method for configuring 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 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, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. In this embodiment, the indication information indicates that the candidate base station performs RRC configuration in a candidate cell, and the candidate cell is all cells having UE context in the cells of the candidate base station.

Preferably, 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.

Step 32: and receiving the RRC configuration result of the candidate base station to the UE in the candidate cell from the automatic switching 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 having UE contexts in the cells of the candidate base station, the candidate base station may or may not determine to perform RRC configuration on the UE in one candidate cell, and determine which RRC configuration to select when performing RRC configuration; when the RRC configuration is carried out on the UE, the RRC configuration result comprises the cell information of the candidate cell and the RRC configuration of the UE, and when the RRC configuration is not carried out, the RRC configuration result comprises the cell information of the candidate cell.

In addition, the candidate base station may transmit the RRC configuration result to the source base station through an automatic handover response message. The candidate base station can perform RRC configuration on the UE in all cells with the UE context in the cells of the candidate base station according to the indication information, that is, the candidate base station can reserve resources for the UE in any cell with the UE context in the cell, so that the configuration result includes cell information of all cells with the UE context in the cells of the candidate base station.

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

Step 33: and sending the switching information to the UE.

Wherein the switching 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 handover information to the UE, where the handover information includes the RRC configuration result, and therefore the handover information includes cell information of all cells having UE context in the cells of the candidate base station. I.e. the handover information includes the physical cell identity, carrier frequency information and RRC configuration of the cell.

In this embodiment, when the source base station instructs the candidate base station to perform RRC configuration on the UE in all cells with UE contexts in the cell of the candidate base station, the candidate base station may reserve resources for the UE in all cells with UE contexts in the cell of the candidate base station according to the instruction, so that the UE may be preferentially switched to the cell with reserved resources when performing subsequent cell switching, thereby reducing the switching delay.

Fourth embodiment

As shown in fig. 4, an embodiment of the present invention provides a method for configuring 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 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, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. 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 cell having a UE context in a part of cells of the candidate base station.

Step 42: and receiving the RRC configuration result of the candidate base station to the UE in the candidate cell and the cell information of the non-candidate cell with the UE context from the automatic switching preparation response message.

In addition, the candidate cell is a cell having the UE context and instructed to perform the RRC configuration among the cells of the candidate base station, so the non-candidate cell is a cell other than the candidate cell among the cells of the candidate base station, that is, the non-candidate cell includes a cell having no UE context and a cell having the UE context but not instructed to perform the RRC configuration. In the embodiment of the present invention, cell information of a non-candidate cell having a UE context needs to be acquired. Namely, the cell information of the cell having the UE context but not instructed to perform RRC configuration among the cells of the candidate base station needs to be acquired.

Step 43: and sending the switching information to the UE.

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

When the source base station indicates the candidate base station to perform RRC configuration on the UE in a cell with UE context in part of the cells of the candidate base station, the candidate base station can send the RRC configuration result to the source base station through an automatic switching response message. The candidate base station may perform RRC configuration on the UE in all cells having the UE context in the cell of the candidate base station according to the indication of the source base station, that is, resources are reserved for the UE in the cell having the UE context in part of the cell of the candidate base station, so that the configuration result includes cell information of the cell having the UE context and being indicated to perform RRC configuration.

In addition, in the cell having the UE context of the candidate base station, if a part of the cells is instructed to perform the RRC configuration, the remaining part of the cells is not instructed to perform the RRC configuration, and the remaining part of the cells (i.e., the non-candidate cells having the UE context) has the UE context, so that the UE does not need to request the source base station for the relevant information again when performing the cell handover, and therefore the remaining part of the cells can also have the effect of reducing the handover delay as the candidate cells for the UE to perform the cell handover.

Therefore, after performing RRC configuration according to the indication information, the candidate base station needs to further acquire cell information of the non-candidate cell having the UE context, send the RRC configuration result and the acquired cell information of the non-candidate cell having the UE context to the source base station, and forward the cell information to the UE by the source base station. Wherein, since the cell information of the non-candidate cell having the UE context is acquired 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 cell information of the candidate cell, and the handover information includes the RRC configuration result and cell information of the non-candidate cell having the UE context, the handover information includes cell information of the candidate cell and the non-candidate cell having the UE context. Therefore, the cells included in the handover information fed back to the UE by the source base station are the cells indicated to perform RRC configuration and the cells not indicated to perform RRC configuration in the cells having UE context of the candidate base station.

Fifth embodiment

As shown in fig. 5, an embodiment of the present invention provides a method for configuring 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 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, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. 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 cell having a UE context in a cell of the candidate base station.

Step 52: and receiving the RRC configuration result of the candidate base station to the UE in the candidate cell from the automatic switching preparation response message.

Step 53: cell information of a non-candidate cell having a UE context is acquired.

Step 54: and sending the switching information to the UE.

When the source base station indicates the candidate base station to perform RRC configuration on the UE in a cell with part of UE context in the cell of the candidate base station, the cell information of the non-candidate cell with the UE context can be directly packaged by the source base station and then sent to the UE, so that the complexity of packaging by the candidate base station and then forwarding by the source base station is saved, and the signaling sending is reduced.

In addition, in this embodiment, since the RRC configuration result includes cell information of the candidate cell and the handover information includes the RRC configuration result and cell information of the non-candidate cell having the UE context, the handover information includes cell information of the candidate cell and the non-candidate cell having the UE context. Therefore, the cells included in the handover information fed back to the UE by the source base station are the cells indicated to perform RRC configuration and the cells not indicated to perform RRC configuration in the cells having UE context of the candidate base station.

Sixth embodiment

As shown in fig. 6, an embodiment of the present invention provides a method for configuring 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 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, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. In this embodiment, the indication information indicates that the candidate base station does not perform RRC configuration on the UE.

Step 62: receiving cell information of all cells having the UE context among the cells of the candidate base station from an automatic handover preparation response message.

And step 63: and sending the switching information to the UE.

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

When the source base station indicates the candidate base station not to perform the RRC configuration on the UE, the candidate base station does not reserve resources for the UE, but for all cells with UE contexts in the candidate base station, because of the UE contexts, the UE does not need to request relevant information from the source base station again when performing cell handover, and therefore the cell with UE context can also have the effect of reducing handover delay as an alternative cell for performing cell handover on the UE.

Therefore, although the candidate base station does not configure the RRC according to the indication information, the candidate base station may acquire cell information of all cells having UE context in the cells of the candidate base station, and send the cell information to the source base station, and the source base station forwards the cell information to the UE. In addition, in the embodiment of the invention, the cell information of all the cells with the UE context in the cells of the candidate base station is acquired by the candidate base station, so that 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 method for configuring cell handover, which specifically includes the following steps:

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

Step 72: and after receiving the 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.

Step 73: and sending the switching information to the UE.

When the source base station indicates the candidate base station not to perform RRC configuration on the UE, the cell information of all cells with UE context in the cells of the candidate base station can be directly encapsulated by the active base station and then sent to the UE, so that the complexity of encapsulation by the candidate base station and forwarding by the source base station is saved, and the signaling sending is reduced.

In summary, the embodiments of the present invention can instruct the candidate base station to perform RRC configuration on all cells having UE contexts or part of cells having UE contexts in its cell according to the resource condition of each cell in the candidate base station, or not perform RRC configuration on the UE, so as to implement a flexible configuration manner, and further fully utilize system resources to reserve resources for the UE for cell handover, thereby reducing handover delay.

Eighth embodiment

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

step 81: the candidate base station receives indication information sent by the source base station.

The indication information is used for indicating the candidate base station to perform RRC configuration on the UE in the candidate cell or indicating the candidate base station not to perform RRC configuration on the UE, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. Preferably, 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 CRNTI configuration of the UE, and a dedicated RACH resource configuration of the UE.

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

Step 82: and 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.

In the embodiment of the invention, as the candidate base station can carry out RRC configuration in all cells with UE context or part of cells with UE context in the cell according to the indication of the source base station, or does not carry out RRC configuration on the UE, a flexible configuration mode is realized, and further system resources can be fully utilized to reserve resources for the UE to carry out cell switching, thereby reducing switching time delay.

Ninth embodiment

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

step 91: the candidate base station receives an 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 for indicating the candidate base station to perform 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 context in the cells of the candidate base station. Preferably, 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 CRNTI configuration of the UE, and a dedicated RACH resource configuration of the UE.

In addition, the candidate base station may acquire, from the automatic handover preparation request message transmitted by the source base station, indication information for indicating the candidate base station to perform RRC configuration on the UE in the candidate cell or indicating the candidate base station not to perform RRC configuration on the UE, and cell information of all cells having UE context in the candidate base station. However, the specific manner of receiving the information is not limited thereto.

And step 92: and 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.

In this embodiment, the indication information 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 is sent to the candidate base station as the carrying information of the automatic handover preparation request message, so that the candidate base station can perform related operations according to the indication information. In addition, the automatic handover preparation request message also carries cell information of all cells with UE contexts in the cells of the candidate base station, so that the candidate base station can know which cells have UE contexts and which cells do not have UE contexts in the cells, thereby facilitating the candidate base station to execute related operations.

Tenth embodiment

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

step 101: the candidate base station receives indication information sent by the source base station.

The indication information is used for indicating the candidate base station to perform RRC configuration on the UE in the candidate cell or indicating the candidate base station not to perform RRC configuration on the UE, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. In this embodiment, the indication information indicates the candidate base station to perform RRC configuration on the UE in the candidate cell.

Preferably, 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 CRNTI configuration of the UE, and a dedicated RACH resource configuration of the UE.

Step 102: and feeding back the RRC configuration result of the candidate base station to 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; 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 determine whether to perform RRC configuration on the UE in one candidate cell or not, and determine which RRC configuration to select when performing RRC configuration; when the RRC configuration is carried out on the UE, the RRC configuration result comprises the cell information of the candidate cell and the RRC configuration of the UE, and when the RRC configuration is not carried out, the RRC configuration result comprises 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 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.

That is, when the indication information indicates the candidate base station to perform RRC configuration on the UE in the candidate cell, the following two cases are divided:

in case one, the candidate cells are all cells with UE context in the cells of the candidate base station, and the candidate base station may perform RRC configuration in all the cells with UE context according to the indication information, that is, the candidate base station may reserve resources for the UE in any one of the cells with UE context in its cell, and send the RRC configuration result including the cell information of all the UE context cells in the cells of the candidate base station to the source base station, so that the source base station forwards the RRC configuration result to the UE, and the UE may be preferentially switched to the cells when cell switching is required, thereby reducing the switching delay.

In case two, if the candidate cell is a cell with a UE context in a part of the cells of the candidate base station, the candidate base station may perform RRC configuration in the cell with the UE context in a part of the cells according to the indication information, that is, the candidate base station may reserve resources for the UE in the cell with the UE context in the part of the cells. Among the cells with UE context of the candidate base station, if a part of the cells with UE context is instructed to perform RRC configuration, the remaining part of the cells is not instructed to perform RRC configuration, and the remaining part of the cells (i.e., the non-candidate cells with UE context) has UE context, so that the UE does not need to request relevant information from the source base station again when performing cell handover, and therefore the remaining part of the cells can also have the effect of reducing handover delay as the candidate cells for the UE to perform cell handover. Therefore, the UE receives the handover information including the RRC configuration result and the cell information of the non-candidate cell having the UE context, and the RRC configuration result includes the cell information of the candidate cell, so the UE receives the handover information including the cell information of the candidate cell and the cell information of the non-candidate cell having the UE context.

Eleventh embodiment

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

step 111: the candidate base station receives indication information sent by the source base station.

The indication information is used for indicating the candidate base station to perform RRC configuration on the UE in the candidate cell or indicating the candidate base station not to perform RRC configuration on the UE, where the candidate cell is: all cells or part of cells with UE context in the cells of the candidate base station. 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 cell having a UE context in a part of cells of the candidate base station.

Step 112: and 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 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 the non-candidate cell having the 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 a cell having a UE context in a part of cells of the candidate base station, the cell information of the non-candidate cell having the UE context may also be directly encapsulated by the candidate base station, and then sent to the source base station, and 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 method for configuring cell handover, which specifically includes the following steps:

step 121: the candidate base station receives indication information sent by the source base station.

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

Step 122: and feeding back all cell information of the cell with the 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.

That is, in the embodiment of the present invention, when the source base station indicates that the candidate base station does not perform RRC configuration on the UE, the candidate base station may not reserve resources for the UE, but for all cells with UE context in the candidate base station, because of having the UE context, the UE does not need to request relevant information from the source base station again when performing cell handover, and therefore the cell with UE context can also have an effect of reducing handover delay as an alternative cell for the UE to perform cell handover. Therefore, although the candidate base station does not configure the RRC according to the indication information, the candidate base station may acquire cell information of all cells having UE context in the cells of the candidate base station, and send the cell information to the source base station, and the source base station forwards the cell information to the UE. Wherein, since the cell information of all cells having UE context among the cells of the candidate base station is acquired 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 the RRC configuration on the UE, the candidate base station may also directly send an empty message of an automatic handover preparation request response to the source base station, so as to trigger the source base station to acquire cell information of all cells having the UE context in the cells of the candidate base station, and then forward the cell information 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 contexts or some cells with UE contexts in the cell of the candidate base station, the cell may refuse to perform RRC configuration on the UE or perform RRC information configuration of different levels and levels on the UE, that is, the candidate base station may adopt RRC configuration of different levels or refuse to perform RRC configuration on the UE according to the current resource and the priority of the UE, and the method specifically includes the following steps:

in the first level, the UE is not configured in RRC, and the RRC configuration result only contains the physical cell identification and the carrier frequency information.

And in the second level, the UE is subjected to common RRC resource configuration, and the RRC configuration result comprises a physical cell identifier, carrier frequency information and common RRC resource configuration.

And the third level is that the UE is subjected to common RRC resource configuration, security parameter configuration and cell radio network temporary identifier (C-RNTI) configuration, and the RRC information configuration result comprises physical cell identifiers, carrier frequency information, common RRC resource configuration and security parameter configuration and C-RNTI configuration. The UE can also be configured with dedicated RACH resources, and the RRC information configuration result also comprises the configuration of the dedicated RACH resources.

Fourth stage: and carrying out public RRC resource configuration, safety parameter configuration, C-RNTI configuration and special RRC resource configuration on the UE, wherein the RRC information configuration result comprises a physical cell identifier, carrier frequency information, public RRC resource configuration, safety parameter configuration and C-RNTI configuration. The UE may also be configured with dedicated RACH resources and/or other dedicated configurations (e.g., measurement configurations), and the RRC information configuration result further includes the dedicated RACH resources and/or other dedicated configurations.

From the above, the source base station may instruct the candidate base station to perform RRC configuration on all cells having UE context or some cells having UE context in its cell according to the resource condition of each cell in the candidate base station, or not perform RRC configuration on the UE, thereby implementing a flexible configuration manner, and for the candidate base station, may also perform RRC configuration according to the current resource of each cell and UE level, may further fully utilize system resources, and reserve resources for the UE to perform cell handover, thereby reducing handover delay.

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:

an indication sending module 131, configured to control the source base station to send 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 with UE context or part of cells with UE context in the cells of the candidate base station;

a feedback module 132, 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 for enabling the UE to perform cell handover according to the handover information.

Preferably, the indication sending module 131 is specifically configured to: and the control 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.

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

a second receiving unit, configured to receive, from an automatic handover preparation response message, an RRC configuration result of the candidate base station for the UE in the candidate cell and cell information of a non-candidate cell having a UE context, where the RRC configuration result includes the cell information of the candidate cell;

a second 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 having a UE context.

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

a first acquisition unit configured to acquire cell information of a non-candidate cell having a 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 having a 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 having UE context in the cells of the candidate base station from an automatic handover preparation response message;

a fourth 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.

a fifth receiving unit, configured to obtain cell information of all cells with UE context in the cells of the candidate base station after receiving an 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.

Fourteenth embodiment

An embodiment of the present invention further provides a cell handover configuration apparatus, as shown in fig. 14, the cell handover configuration apparatus 140 includes:

an indication receiving module 141, configured to control the candidate base station to receive an 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, and the candidate cell is: all cells with UE context or part of cells with UE context in the cells of the candidate base station;

a configuration module 142, configured to execute corresponding operations according to the indication information, so that the source base station sends, according to the corresponding operations executed by the candidate base station, handover information to the UE, where the handover information is used for enabling the UE to perform cell handover according to the handover information.

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

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.

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

a first message sending unit, configured to feed back, to the source base station, an RRC configuration result of the candidate base station for the UE in the candidate cell 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 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.

Preferably, 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, the configuring module 142 includes:

a second message sending unit, configured to 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 having a 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.

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

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

Fifteenth embodiment

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

a transmitter 151 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 with UE context or part of cells with UE context in the cells of the candidate base station;

and a processor 152, connected to the transmitter 151, configured to send, according to an operation performed by the candidate base station according to the indication information, handover information to the UE, where the handover information is used for enabling the UE to perform cell handover according to the handover information.

The embodiment of the device of the invention is a device corresponding to the embodiment of the method, and all implementation means in the embodiment of the method are applicable to the embodiment of the device, and the same technical effects can be achieved.

Sixteenth embodiment

Corresponding to the above configuration method applied to cell handover at the candidate base station side, the present embodiment provides a corresponding base station, as shown in fig. 16, specifically including:

receiver 161, 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 with UE context or part of cells with UE context in the cells of the candidate base station;

and a processor 162, connected to the receiver 161, 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.

In summary, for the UE, the source base station and the candidate base station, when the configuration method for cell handover is performed, the specific implementation may be divided into the following five types:

mode one, as shown in fig. 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 cells of the candidate base station through the automatic switching preparation request message; the automatic switching request message carries cell information of all cells with UE context in cells of the candidate base station, and the source base station is a base station to which the UE is accessed;

step 172: the candidate base station performs RRC configuration on the UE in all cells with UE context in the cells of the candidate base station according to the automatic switching request message; wherein the RRC configuration comprises: one or more of a common RRC resource configuration, a dedicated RRC resource configuration, a security parameter of the UE, a CRNTI of the UE, and a 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 switching preparation response message, wherein the RRC configuration result comprises cell information of all cells with UE context in the cells of the candidate base station;

step 174: and the source base station sends switching information to the UE, wherein the switching information comprises an RRC configuration result.

That is, in the present embodiment, in the automatic handover preparation procedure, the source base station instructs the candidate base station to perform RRC configuration on all cells having UE context among the cells of the candidate base station. The source base station requests the candidate base station to perform RRC configuration on the UE for all cells with UE context in the cells of the candidate base station, all the cells with UE context in the cells of the candidate base station can feed back an RRC configuration result to the source base station, the RRC configuration result already contains information of the cells with UE context in the cells of the candidate base station, and the source base station forwards the RRC information result sent by the candidate base station to the UE, so that the source base station is not required to additionally generate information of all the cells with UE context in the candidate base station and send the information to the UE.

Mode two, as shown in fig. 18:

step 181: the source base station requests the candidate base station to perform RRC configuration on the UE in a cell with UE context in part of cells of the candidate base station through the automatic switching preparation request message; the source base station is a base station accessed by the UE, and the automatic switching request message carries cell information of all cells with UE context in the cells of the candidate base station;

step 182: the candidate base station performs RRC information configuration on the UE in a cell with UE context in part of the cells of the candidate base station according to the automatic switching request message;

step 183: the candidate base station generates cell information of a non-candidate cell with the UE context;

step 184: the candidate base station sends the RRC configuration result and cell information of the non-candidate cell with the UE context to the source base station through an automatic switching preparation response message; wherein, the RRC information configuration comprises: one or more of public RRC resource configuration, special RRC resource configuration, UE security parameter configuration, UE CRNTI configuration and UE special RACH resource configuration; the information of the cell includes: physical layer cell identification and carrier frequency information of the cell;

step 185: the source base station transmits the RRC configuration result and cell information of the non-candidate cell having the UE context to the UE.

Mode three, as shown in fig. 19:

step 191: the source base station requests the candidate base station to perform RRC configuration on the UE in a cell with UE context in part of cells of the candidate base station through the automatic switching preparation request message; the source base station is a base station accessed by the UE, and the automatic switching request message carries cell information of all cells with UE context in the cells of the candidate base station;

step 192: the candidate base station performs RRC information configuration on the UE in a cell with UE context in part of the cells of the candidate base station according to the automatic switching request message;

step 193: the candidate base station sends the RRC information result to the source base station through an automatic switching preparation response message; wherein, the RRC information configuration comprises: one or more of public RRC resource configuration, special RRC resource configuration, UE security parameter configuration, UE CRNTI configuration and UE special RACH resource configuration; the information of the cell includes: physical layer cell identification and carrier frequency information of the cell;

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

step 195: and 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.

Mode four, as shown in fig. 20:

step 201: the source base station indicates the candidate base station not to perform RRC configuration on the UE through the automatic switching preparation request message; the source base station is a base station accessed by the UE, and the automatic switching request message carries cell information of all cells with UE context in the cells of the candidate base station;

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

step 203: generating information of all cells with UE context in the cells with the candidate base stations;

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

step 205: and the source base station sends all cell information with UE context in the cells of the candidate base stations to the UE.

Mode five, as shown in fig. 21:

step 211: the source base station indicates the candidate base station not to perform RRC configuration on the UE through the automatic switching preparation request message; the source base station is a base station accessed by the UE, and the automatic switching request message carries cell information of all cells with UE context in the cells of the candidate base station;

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

step 213: sending an automatic handover preparation response to the source base station;

step 214: the source base station generates cell information with UE context in all cells with the candidate base stations; the information of the cell includes: physical layer cell identification and carrier frequency information of the cell;

step 215: and the source base station sends all cell information with UE context in the cells of the candidate base stations to the UE.

In summary, the configuration method for cell switching in the embodiment of the present invention can enable the source base station to indicate the candidate base station to perform dedicated resource reservation in the switching preparation for automatic switching and indicate the cell successfully reserving resources to the UE, so that the UE preferentially selects the cell reserving resources as the target cell for automatic switching, thereby reducing the switching delay.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

A1. A method for configuring cell handover, comprising:

A2. The method for configuring cell handover of claim a1, 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.

A3. The method of 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 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.

A4. The method of 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 with UE context in part of 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 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.

A5. The method of 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 with UE context in part of 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:

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

A6. The method of claim A1, wherein 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 when the indication information indicates that the candidate base station does not perform RRC configuration on the UE 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.

A7. The method of claim a1, wherein 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 when the indication information indicates that the candidate base station does not perform RRC configuration on the UE 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;

A8. The method for configuring cell handover of any one of claims a1 to a7, wherein the RRC configuration comprises 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.

B9. A method for configuring cell handover, comprising:

B10. The method of claim B9, wherein the step of receiving an indication from the source base station by the candidate base station comprises:

B11. The method of claim B9, 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 handover information to the UE according to the corresponding operation performed by the candidate base station comprises:

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;

B12. The method for configuring cell handover of 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 with UE context in part of cells of the candidate base station, the step of performing corresponding operation according to the indication information so that the source base station sends handover information to UE according to the corresponding operation performed by the candidate base station comprises:

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;

B13. The method for configuring cell handover of claim B9, 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 comprises:

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;

B14. The method of any of claims B9 to B13, 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.

C15. An apparatus for configuring a cell handover, comprising:

D16. An apparatus for configuring a cell handover, comprising:

E17. A base station, comprising:

F18. A base station, comprising:

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

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:

acquiring cell information of a non-candidate cell having a 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:

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:

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:

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:

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:

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:

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:

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:

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:

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.