CN104301883B

CN104301883B - A kind of cooperative multipoint transmission control method and device in cell switch process

Info

Publication number: CN104301883B
Application number: CN201310298378.XA
Authority: CN
Inventors: 付喆
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-07-16
Filing date: 2013-07-16
Publication date: 2018-01-16
Anticipated expiration: 2033-07-16
Also published as: CN104301883A; WO2015007210A1

Abstract

The invention discloses the cooperative multipoint transmission control method and device in a kind of cell switch process.Its method includes：Serving BS judges whether target BS supports the cooperative multipoint transmission to terminal after it is determined that carrying out cell switching to terminal；If, other access network nodes in gathering to cooperation send handoff notification message, wherein the identification information of carried terminal, the identification information of target BS and cooperative multipoint transmission maintain configured information, if not, the cooperative multipoint transmission to terminal is deactivated, the message of instruction deactivation cooperative multipoint transmission is sent to other access network nodes.If other access network nodes receive handoff notification message, determine that terminal continues cooperative multipoint transmission after switching to target BS；If receiving the message for deactivating cooperative multipoint transmission, the cooperative multipoint transmission of the terminal is deactivated.The embodiment of the present invention, solve when performing the terminal of cooperative multipoint transmission and carrying out cell switching, the problem of how processing the cooperative multipoint transmission of the terminal.

Description

A kind of cooperative multipoint transmission control method and device in cell switch process

Technical field

The present invention relates to the cooperative multipoint transmission control in wireless communication technology field, more particularly to a kind of cell switch process Method and device processed.

Background technology

Long Term Evolution（Long Term Evolution, LTE）In system, the process that UE carries out cell switching is as follows：

Source evolved base station（eNB）According to user equipment（User Equipment, UE）The measurement result reported, make for UE carries out the judgement of X2 switchings.

Source eNB sends handover request message to target eNB.

Target eNB configures new carrying after the handover request message is received, for UE, if configuration successful, target eNB to Source eNB returns to switching response message.

After source eNB receives switching response message, wireless heterogeneous networks are sent to UE（RadioResourceControl, RRC）Reconfiguration message, and stop the reception and transmission of data surface and chain of command.

After UE receives RRC reconfiguration messages, start to stop the reception and transmission with source eNB data surface and chain of command, Synchronization operation is carried out with target eNB.Wherein, after down-going synchronous is completed, UE initiates uncontested random access procedure, leads to Cross uncontested random access procedure and complete uplink synchronous, UE sends RRC to target eNB and reconfigures completion message, and target eNB connects After receiving this message, RLC confirmation is returned（ACK）Message, start simultaneously at the transmission for carrying out downlink data.And UE is receiving this After after RLC ACK message, start the up transmission of data surface.

In addition, in network side, in order to ensure the lossless operation of AM data, source eNB is not confirmed to target eNB forwards Or the PDCP SDU newly arrived.

Target eNB is received after RRC reconfigures completion message, will be notified core net transduction pathway, and be received from core net Confirmation after, target eNB will notify source eNB to discharge old carrying.

In order to reduce the interference of MPS process edge UE adjacent area, Long Term Evolution enhancing（Long Term Evolution- Advance, LTE-A）System employs cooperative multipoint transmission technology（Coordinated-Multiple-Point, CoMP）.Association Make multicast communication technology to refer to, the multiple transmission point separated on geographical position（Transmission Point, TP）Collaboration participates in Carry out data transmission or combine to receive the data that a UE is sent for a UE.In general, multiple transmission point can be not With the radio-frequency maser of the base station of cell or same base station and its lower different districts（Remote Radio Head, RRH）.

To carry out global optimization scheduling with the presence or absence of Centroid, the implementation of CoMP technologies is divided into non-central cooperation Two kinds of scheduling and center cooperative scheduling.Under the cooperative scheduling scene of center, by center cooperative node（Central Coordination Node, CCN）With service base station collaboration scheduling CoMP UE transmission.It is multiple under non-central scheduling scenario The interaction of multiple schedule information is carried out between cooperative base station, CoMP UE transmission is dispatched in a manner of iteration scheduling.Wherein, CoMP UE refer to the UE for supporting cooperative multipoint transmission.

Prior art to UE carry out cell switching when, based on premise be individually by serving BS to UE carry out resource tune Degree, when not accounting for carrying out cell switching to the CoMP UE for performing cooperative multipoint transmission, to CoMP UE cooperative multipoint transmission The problem of how handling.

The content of the invention

It is an object of the invention to provide the cooperative multipoint transmission control method and device in a kind of cell switch process, with solution When certainly performing the CoMP UE progress cell switchings of cooperative multipoint transmission, ask what how CoMP UE cooperative multipoint transmission was handled Topic.

The purpose of the present invention is achieved through the following technical solutions：

The embodiments of the invention provide the cooperative multipoint transmission control method in cell switch process.Wherein, cell switches Process includes：Serving BS sends handover request message after it is determined that carrying out cell switching to terminal, to target BS, and is connecing After the handover request ack message for receiving target BS transmission, switching command is sent to above-mentioned terminal, to indicate that the terminal is cut Shift to the cell of above-mentioned target BS.Wherein, the terminal is to perform the terminal of cooperative multipoint transmission.

In above-mentioned cell switch process, a kind of cooperative multipoint transmission control method includes：

The serving BS judges whether above-mentioned target BS is supported to this after it is determined that carrying out cell switching to above-mentioned terminal The cooperative multipoint transmission of terminal；

If target BS support is more to the cooperation for participating in the terminal to the cooperative multipoint transmission of the terminal, serving BS Other access network nodes in the cooperation set of point transmission send handoff notification message, and above-mentioned end is carried in the handoff notification message The identification information at end, the identification information of above-mentioned target BS and cooperative multipoint transmission maintain configured information；

If the target BS does not support the cooperative multipoint transmission to the terminal, serving BS deactivates the association to the terminal Make multicast communication, and other access network nodes in the cooperation set to the cooperative multipoint transmission for participating in the terminal send instruction and gone The message of cooperative multipoint transmission is activated, the instruction deactivates the identification information that the terminal is carried in the message of multicast communication and gone Activate the configured information of cooperative multipoint transmission.

Method provided in an embodiment of the present invention, in cell switch process is carried out to terminal, if it is determined that target BS branch The cooperative multipoint transmission to terminal is held, maintains the cooperative multipoint transmission of the terminal, if it is determined that target BS was not supported to the end The cooperative multipoint transmission at end, deactivates the cooperative multipoint transmission of the terminal, and indicates other access network nodes in cooperation set Deactivate the cooperative multipoint transmission for the terminal, it is not necessary to ensure the continuity of the cooperative multipoint transmission of terminal, solve and hold When the CoMP UE of row cooperative multipoint transmission carry out cell switching, the problem of how processing CoMP UE cooperative multipoint transmission.

In the embodiment of the present invention, serving BS can acquire information to judge whether target BS is supported in several ways To the cooperative multipoint transmission of above-mentioned terminal, wherein several implementations are set forth below：

Whether mode one, serving BS are supported to above-mentioned according to the target BS carried in above-mentioned handover request ack message The configured information of the cooperative multipoint transmission of terminal, judges whether the target BS supports the cooperative multipoint transmission to the terminal.

Under this mode, optionally, serving BS can carry in the handover request message for being sent to target BS CoMP transmission capability requests information, the CoMP transmission capability requests information be used for indicate target BS send its whether support to State the configured information of the cooperative multipoint transmission of terminal.Further, serving BS can also carry clothes in handover request message Whether the configured information of cooperative multipoint transmission to above-mentioned terminal is supported in business base station.

Whether coordinate multipoint biography to above-mentioned terminal is supported in each base station that mode two, serving BS are sent in advance according to OAM Defeated configured information, judges whether the target BS supports the cooperative multipoint transmission to above-mentioned terminal.

Whether mode three, serving BS are supported to the cooperative multipoint transmission of above-mentioned terminal according to interactive in advance between base station Configured information, judges whether target BS supports the cooperative multipoint transmission to above-mentioned terminal.

Whether support each base station that the center cooperation point of mode four, serving BS in above-mentioned cooperation set is sent in advance To the configured information of the cooperative multipoint transmission of above-mentioned terminal, judge whether target BS supports the coordinate multipoint biography to above-mentioned terminal It is defeated.

Obviously, the premise of employing mode four is that above-mentioned cooperation set includes center cooperation point.

Based on above-mentioned any implementation, it is preferred that serving BS judges whether target BS supports the cooperation to terminal The specific implementation means of multicast communication can with but be not limited only to include：

If whether target BS is supported to indicate the target base to the configured information of the cooperative multipoint transmission of above-mentioned terminal Stand and do not support cooperative multipoint transmission, serving BS judges that the target BS does not support the cooperative multipoint transmission to above-mentioned terminal；

If whether target BS is supported to indicate the target BS to the configured information of the cooperative multipoint transmission of above-mentioned terminal The not cooperative multipoint transmission of Support center scheduling method, but scheduling method centered on the cooperative multipoint transmission of the terminal, service base Stand the cooperative multipoint transmission for judging that the target BS is not supported to above-mentioned terminal；

If whether target BS is supported to indicate the target BS to the configured information of the cooperative multipoint transmission of above-mentioned terminal The cooperative multipoint transmission of Support center scheduling method, and scheduling method centered on the cooperative multipoint transmission of the terminal, serving BS Judge that the target BS supports the cooperative multipoint transmission to above-mentioned terminal；If whether the target BS is supported to the terminal The configured information of cooperative multipoint transmission indicates the cooperative multipoint transmission of target BS Support center scheduling method, then target BS is Assist at the no center for supporting cooperation set where also indicating the configured information of the cooperative multipoint transmission of the terminal target BS Make the identification information of point.

Based on above-mentioned any implementation, it is preferred that serving BS is to above-mentioned terminal after it is determined that carry out cell switching, Before judging whether target BS supports the cooperative multipoint transmission to above-mentioned terminal.If it is determined that cell switches to S1 to switch, then Deactivate to the cooperative multipoint transmission of above-mentioned terminal, and other in the cooperation set to the cooperative multipoint transmission for participating in the terminal Access network node sends the message that instruction deactivates cooperative multipoint transmission, and the instruction is deactivated in the message of multicast communication and carried State the identification information of terminal and deactivate the configured information of cooperative multipoint transmission.

In serving BS and target BS not in same mobility management entity（MME）When, X2 switchings can not be carried out, and need Carry out S1 switchings.S1 switchings are complex, if still maintaining the cooperative node transmission of terminal, it is also necessary to by corresponding information It is sent to core net node.To simplify switching flow, the coordinate multipoint biography to terminal can be deactivated when it is determined that being S1 switchings It is defeated.

It may include center in the embodiment of the present invention, in the cooperation set for the cooperative multipoint transmission for participating in above-mentioned terminal to cooperate Point, it is also possible to including other cooperative base stations outside serving BS.

Based on above-mentioned any serving BS side embodiment of the method, the cooperative multipoint transmission to terminal is supported for target BS Situation.It is preferred that if whether above-mentioned target BS supports the configured information instruction to the cooperative multipoint transmission of above-mentioned terminal The center cooperation point of cooperation set where the cooperative multipoint transmission of the target BS Support center scheduling method and the target BS Identification information, and scheduling method centered on the cooperative multipoint transmission of the terminal, then serving BS is to the cooperation for participating in the terminal Multicast communication cooperation set in other access network nodes send handoff notification message, in particular to：Serving BS is to participation Center cooperation point in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal sends handoff notification message, the handoff notification message In also carry the identification information of the center cooperation point of cooperation set where target BS.

On this basis, it is preferred that cooperation set of the serving BS to the cooperative multipoint transmission for participating in the terminal In center cooperation point send handoff notification message before, the center cooperation point of cooperation set according to where the target BS Identification information, judges whether the target BS belongs to same center cooperation point with the serving BS；

If be not belonging to, the serving BS sends the handoff notification message to the target BS, so as to the mesh Center cooperation point in cooperation set where the handoff notification message is sent to the target BS by mark base station；

If belonged to, the center in cooperation set of the serving BS to the cooperative multipoint transmission for participating in the terminal is assisted Make point and send handoff notification message.

Based on above-mentioned any serving BS side embodiment of the method, the coordinate multipoint biography to terminal is not supported for target BS Defeated situation.In the case of one kind, include center cooperation point if participating in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal, It is preferred that other access network nodes transmission instruction during the cooperation to the cooperative multipoint transmission for participating in above-mentioned terminal is gathered deactivates The message of cooperative multipoint transmission, including：The message of instruction deactivation cooperative multipoint transmission is sent to the center cooperation point；Into this After heart cooperation point sends the message that instruction deactivates cooperative multipoint transmission, serving BS can also receive the center cooperation point and send The identification information of the terminal, the not beginning to the terminal transmission or the data, the data of the correct confirmation for not receiving the terminal The end position information of positional information and the data, and associate the beginning of the identification information, the data, the data that preserve the terminal The end position information of positional information and the data.

On the basis of such case, if also including clothes in participating in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal Other cooperative base stations outside business base station, it is preferred that its into the set that cooperates for the cooperative multipoint transmission for participating in above-mentioned terminal His access network node sends the message that instruction deactivates cooperative multipoint transmission, in addition to：Other associations in being closed to above-mentioned collaboration set Make base station and send the message that instruction deactivates cooperative multipoint transmission.

Other cooperative base stations are notified to deactivate the cooperative multipoint transmission of above-mentioned terminal, so as to avoid other cooperative base stations from continuing It is scheduled/transmits for the coordinated multipoint transmission of above-mentioned terminal, the communication after cell switch process or switching is interfered.

Based on above-mentioned any serving BS side embodiment of the method, the coordinate multipoint biography to terminal is not supported for target BS Defeated situation.In another case, serving BS is included if participating in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal Outside other cooperative base stations, but do not include center cooperation point, the cooperation set to the cooperative multipoint transmission for participating in above-mentioned terminal In other access network nodes send instruction deactivate cooperative multipoint transmission message, including：To above-mentioned collaboration set close in its His cooperative base station sends the message that instruction deactivates cooperative multipoint transmission；Other cooperative base stations into the cooperation set, which are sent, to be referred to After showing the message for deactivating cooperative multipoint transmission, serving BS can also receive the mark of the terminal of other cooperative base stations transmission The start position information of information, the not data to the terminal transmission or the correct confirmation for not receiving the terminal, the data With the end position information of the data, and associate preserve the terminal identification information, the data, the start position information of the data With the end position information of the data.

In above-mentioned cell switch process, a kind of access network node（The access network node refers to the association for participating in above-mentioned terminal Make the access network node outside the serving BS of terminal in the cooperation set of multicast communication）The cooperative multipoint transmission control method of side Including：

Access network node in the cooperation set of the cooperative multipoint transmission of participation terminal outside above-mentioned terminal service base station connects The message that instruction deactivates cooperative multipoint transmission is received, the instruction deactivates the mark that the terminal is carried in the message of multicast communication Information and the configured information for deactivating cooperative multipoint transmission；Access network node determines the terminal according to the identification information of the terminal, And the instruction of the configured information according to the deactivation cooperative multipoint transmission, deactivate the cooperative multipoint transmission of the terminal；Or

Above-mentioned access network node receives handoff notification message, and the mark letter of above-mentioned terminal is carried in the handoff notification message Breath, the identification information of above-mentioned target BS and cooperative multipoint transmission maintain configured information；The access network node is according to the terminal Identification information determines the terminal, determines the target BS according to the identification information of the target BS, and pass according to the coordinate multipoint Defeated maintenance configured information, determine that the terminal continues cooperative multipoint transmission after switching to the target BS.

Method provided in an embodiment of the present invention, in cell switch process is carried out to terminal, deactivated if receiving instruction The instruction message of cooperative multipoint transmission living, other access network nodes in cooperation set deactivate pin according to the instruction of serving BS To the cooperative multipoint transmission of the terminal, it is not necessary to ensure the continuity of the cooperative multipoint transmission of terminal.If it is logical to receive switching Know message, the access network node determines to maintain the cooperative multipoint transmission of terminal.Solves the CoMP UE progress for performing CoMP transmission When cell switches, the problem of how processing CoMP UE cooperative multipoint transmission.

Wherein, access network node both can be the center cooperation point in above-mentioned cooperation set or above-mentioned collaboration set Other cooperative base stations in conjunction outside serving BS.

If above-mentioned access network node is center cooperation point, it is preferred that also carrying target base in above-mentioned handoff notification message The identification information of the center cooperation point of cooperation set where standing.

Based on above-mentioned any access net side embodiment, it is preferred that it is follow-up to determine that the terminal switches to the target BS After continuous progress cooperative multipoint transmission, this method also includes：

Suspend the scheduling controlling to the cooperative multipoint transmission of above-mentioned terminal；

The identification information of the center cooperation point of cooperation set according to where above-mentioned target BS, judges target BS place Cooperate set center cooperation point whether this center cooperation point；

If the center cooperation point of cooperation set is this center cooperation point where the target BS, confirm that above-mentioned terminal is cut After changing to the target BS, path handoff procedure is not initiated to core net node, continue to carry out cooperative multipoint transmission to the terminal Scheduling controlling.

Due to after it is determined that the center cooperation point of the cooperation set where target BS is this center cooperation point, it is not necessary to Core net node initiates path handoff procedure, so as to reduce influence of the handoff procedure to core net, avoids unnecessary net Network function reconstitution process and loss.

Based on above-mentioned any access network node side embodiment of the method, if it is preferred that the access network node is center cooperation Point, after the instruction that the serving BS of the access network node receiving terminal is sent deactivates the message of cooperative multipoint transmission, should also The start bit of the identification information of terminal, the not data to the terminal transmission or the correct confirmation for not receiving the terminal, the data The end position information of confidence breath and the data is sent to the serving BS of the terminal；If the access network node is other cooperations Base station, after the instruction that the serving BS of the access network node receiving terminal is sent deactivates the message of cooperative multipoint transmission, will also The identification information of the terminal and terminal is not sent to it to the terminal transmission or the data for the correct confirmation for not receiving the terminal Serving BS；Or other described cooperative base stations do not receive by the identification information of the terminal, not to the terminal transmission or institute The end position information for stating the data of the correct confirmation of terminal, the start position information of the data and the data is sent to institute State the serving BS of terminal.

Based on above-mentioned any access network node side embodiment of the method, if the access network node is center cooperation point, preferably Ground, after the instruction that the serving BS of center cooperation point receiving terminal is sent deactivates the message of cooperative multipoint transmission, also to participation It is more that other cooperative base stations in the cooperation set of the cooperative multipoint transmission of terminal outside serving BS send instruction deactivation cooperation The message of point transmission, the instruction for being sent to other cooperative base stations deactivate the mark that the terminal is carried in the message of cooperative multipoint transmission Know information and deactivate the configured information of cooperative multipoint transmission.

The embodiments of the invention provide a kind of base station, the base station includes：

Cell switch determining module, for determining to carry out cell switching to terminal；

Messaging interface, after in cell switch determining module determination to terminal progress cell switching, Handover request message is sent to target BS；After receiving the handover request ack message that the target BS is sent, to the end End sends switching command, and to indicate that the terminal switches to the cell of the target BS, the terminal is execution coordinate multipoint The terminal of transmission；

Cooperative multipoint transmission control module, for determining to carry out cell to the terminal in the cell switch determining module After switching, judge whether the target BS supports the cooperative multipoint transmission to the terminal；If the target BS is supported To the cooperative multipoint transmission of the terminal, other access networks in cooperation set to the cooperative multipoint transmission for participating in the terminal Node sends handoff notification message, and the identification information of the terminal, the target BS are carried in the handoff notification message Identification information and cooperative multipoint transmission maintain configured information；If the target BS does not support the coordinate multipoint to the terminal Transmission, deactivate the cooperative multipoint transmission to the terminal, and the cooperation set of the cooperative multipoint transmission to the participation terminal In other access network nodes send the message that instruction deactivates cooperative multipoint transmission, the instruction deactivates multicast communication and disappeared The identification information of the terminal is carried in breath and deactivates the configured information of cooperative multipoint transmission.

Base station provided in an embodiment of the present invention, in cell switch process is carried out to terminal, if it is determined that target BS branch The cooperative multipoint transmission to terminal is held, maintains the cooperative multipoint transmission of the terminal, if it is determined that target BS was not supported to the end The cooperative multipoint transmission at end, deactivates the cooperative multipoint transmission of the terminal, and indicates other access network nodes in cooperation set Deactivate the cooperative multipoint transmission for the terminal, it is not necessary to ensure the continuity of the cooperative multipoint transmission of terminal, solve and hold When the CoMP UE of row cooperative multipoint transmission carry out cell switching, the problem of how processing CoMP UE cooperative multipoint transmission.

It is preferred that when judging whether the target BS supports the cooperative multipoint transmission to the terminal, the cooperation is more Point transmission control module is specifically used for：

Whether the target BS according to being carried in the handover request ack message supports the cooperation to the terminal The configured information of multicast communication, judges whether the target BS supports the cooperative multipoint transmission to the terminal；Or

Whether each base station sent in advance according to OAM supports the configured information of the cooperative multipoint transmission to the terminal, sentences Whether the target BS that breaks supports the cooperative multipoint transmission to the terminal；Or

According to the configured information for whether supporting the cooperative multipoint transmission to the terminal interactive in advance between base station, institute is judged State whether target BS supports cooperative multipoint transmission to the terminal；Or

Whether association to the terminal is supported in each base station that center cooperation point in the cooperation set is sent in advance Make the configured information of multicast communication, judge whether the target BS supports the cooperative multipoint transmission to the terminal.

On the basis of above-mentioned preferably embodiment, further, judge whether the target BS is supported to the terminal Cooperative multipoint transmission when, the cooperative multipoint transmission control module specifically can be used for：

If whether the target BS is supported to indicate the mesh to the configured information of the cooperative multipoint transmission of the terminal Cooperative multipoint transmission is not supported in mark base station, judges that the target BS does not support the cooperative multipoint transmission to the terminal；

If whether the target BS is supported to indicate the mesh to the configured information of the cooperative multipoint transmission of the terminal The cooperative multipoint transmission of base station not Support center scheduling method is marked, but mould is dispatched centered on the cooperative multipoint transmission of the terminal Formula, judge that the target BS does not support the cooperative multipoint transmission to the terminal；

If whether the target BS is supported to indicate the mesh to the configured information of the cooperative multipoint transmission of the terminal The cooperative multipoint transmission of base station Support center scheduling method, and scheduling method centered on the cooperative multipoint transmission of the terminal are marked, Judge that the target BS supports the cooperative multipoint transmission to the terminal；If whether the target BS was supported to the end The configured information of the cooperative multipoint transmission at end indicates the cooperative multipoint transmission of the target BS Support center scheduling method, described Whether target BS supports that the configured information of the cooperative multipoint transmission of the terminal is also indicated to cooperate where the target BS The identification information of the center cooperation point of set.

Based on above-mentioned any base station embodiment, it is preferred that determining to enter the terminal in the cell switch determining module After the switching of row cell, the cooperative multipoint transmission control module judges whether the target BS supports the cooperation to the terminal Before multicast communication, the cooperative multipoint transmission control module is additionally operable to：

If it is determined that the cell switches to S1 to switch, the cooperative multipoint transmission to the terminal is deactivated, and to participation Other access network nodes in the cooperation set of the cooperative multipoint transmission of the terminal send instruction and deactivate cooperative multipoint transmission Message, it is described instruction deactivate multicast communication message in carry the terminal identification information and deactivate coordinate multipoint pass Defeated configured information.

Based on above-mentioned any base station embodiment, if it is preferred that whether the target BS supports the association to the terminal The configured information for making multicast communication indicates the cooperative multipoint transmission of the target BS Support center scheduling method and the target The identification information of the center cooperation point of cooperation set where base station, and dispatch mould centered on the cooperative multipoint transmission of the terminal Formula, other accesses in cooperation set of the cooperative multipoint transmission control module to the cooperative multipoint transmission for participating in the terminal When net node sends handoff notification message, it is specifically used for：

The center cooperation point in cooperation set to the cooperative multipoint transmission for participating in the terminal sends handoff notification message, The identification information of the center cooperation point of cooperation set where the target BS is also carried in the handoff notification message.

On this basis, it is preferred that the center during the cooperation to the cooperative multipoint transmission for participating in the terminal is gathered cooperates When point sends handoff notification message, the cooperative multipoint transmission control module is specifically used for：

According to the identification information of the center cooperation point of cooperation set where the target BS, judge the target BS with Whether the serving BS belongs to same center cooperation point；

If be not belonging to, the handoff notification message is sent to the target BS, so that the target BS is by described in Center cooperation point in cooperation set where handoff notification message is sent to the target BS；

If belonged to, the center cooperation point in cooperation set to the cooperative multipoint transmission for participating in the terminal sends switching Notification message.

Based on above-mentioned any base station embodiment, if it is preferred that participating in the collaboration set of the cooperative multipoint transmission of the terminal Conjunction includes center cooperation point, cooperation of the cooperative multipoint transmission control module to the cooperative multipoint transmission for participating in the terminal When other access network nodes in set send the message of instruction deactivation cooperative multipoint transmission, it is specifically used for：

The message of instruction deactivation cooperative multipoint transmission is sent to the center cooperation point；

After the message that instruction deactivates cooperative multipoint transmission is sent to the center cooperation point, the cooperative multipoint transmission control Molding block is additionally operable to：The identification information for the terminal that the center cooperation point is sent, do not receive not to the terminal transmission or The start position information of data, the data and the end position information of the data to the correct confirmation of the terminal；Close UNPROFOR deposits the end position of the identification information of the terminal, the data, the start position information of the data and the data Information.

On this basis, if it is preferred that also including institute in participating in the cooperation set of the cooperative multipoint transmission of the terminal State other cooperative base stations outside base station, cooperative multipoint transmission of the cooperative multipoint transmission control module to the participation terminal Cooperation set in other access network nodes send instruction deactivate cooperative multipoint transmission message when, be additionally operable to：

Other cooperative base stations into the cooperation set send the message that instruction deactivates cooperative multipoint transmission.

Based on above-mentioned any base station embodiment, if it is preferred that participating in the collaboration set of the cooperative multipoint transmission of the terminal Conjunction includes other cooperative base stations outside the base station, but does not include center cooperation point, and the cooperative multipoint transmission is to participation Other access network nodes in the cooperation set of the cooperative multipoint transmission of the terminal send instruction and deactivate cooperative multipoint transmission Message when, be specifically used for：

Other cooperative base stations into the cooperation set send the message that instruction deactivates cooperative multipoint transmission；

It is described after other cooperative base stations into the cooperation set send the message that instruction deactivates cooperative multipoint transmission Cooperative multipoint transmission control module is additionally operable to：Receive the terminal that other described cooperative base stations are sent identification information, not to The terminal transmission or the data of correct confirmation, the start position information of the data and the number for not receiving the terminal According to end position information；Association preserve the identification information of the terminal, the data, the data start position information and The end position information of the data.

The embodiments of the invention provide a kind of access network node, the access network node is that the coordinate multipoint of participation terminal passes Access network node described in defeated cooperation set outside terminal service base station, the access network node include：

Cooperative multipoint transmission indicates receiving module, for receiving the message for indicating to deactivate cooperative multipoint transmission, the finger Show the configured information of the identification information that the terminal is carried in the message for deactivating multicast communication and deactivation cooperative multipoint transmission； Or for receiving handoff notification message, the identification information of the terminal, the target base are carried in the handoff notification message The identification information and cooperative multipoint transmission stood maintain configured information；

Cooperative multipoint transmission deactivates flexible module, is deactivated when cooperative multipoint transmission instruction receiving module receives instruction During the message of cooperative multipoint transmission, the cooperative multipoint transmission deactivates flexible module and is used to be determined according to the identification information of the terminal The terminal, and the instruction of the configured information according to the deactivation cooperative multipoint transmission, the cooperation for deactivating the terminal are more Point transmission；

Cooperative multipoint transmission maintenance module, when cooperative multipoint transmission instruction receiving module receives handoff notification message When, the cooperative multipoint transmission maintenance module is used to determine the terminal according to the identification information of the terminal, according to the mesh The identification information of mark base station determines the target BS, and maintains configured information according to the cooperative multipoint transmission, it is determined that described Terminal continues cooperative multipoint transmission after switching to the target BS.

Access network node provided in an embodiment of the present invention, in cell switch process is carried out to terminal, if receiving finger Show the instruction message for deactivating cooperative multipoint transmission, other access network nodes in cooperation set are gone according to the instruction of serving BS Cooperative multipoint transmission of the activation for the terminal, it is not necessary to ensure the continuity of the cooperative multipoint transmission of terminal.If receive Handoff notification message, the access network node determine to maintain the cooperative multipoint transmission of terminal.Solves the CoMP for performing CoMP transmission When UE carries out cell switching, the problem of how processing CoMP UE cooperative multipoint transmission.

If it is preferred that the access network node is center cooperation point, the mesh is also carried in the handoff notification message The identification information of the center cooperation point of cooperation set where marking base station.

Based on above-mentioned any access network node embodiment, it is preferred that described in cooperative multipoint transmission maintenance module determination Terminal is switched to after the target BS continue cooperative multipoint transmission after, be additionally operable to：

Suspend the scheduling controlling to the cooperative multipoint transmission of the terminal；

The identification information of the center cooperation point of cooperation set, judges the target BS institute according to where the target BS Cooperation set center cooperation point whether this center cooperation point；

If the center cooperation point of cooperation set is this center cooperation point where the target BS, confirm that the terminal is cut After changing to the target BS, path handoff procedure is not initiated to core net node, continue to carry out coordinate multipoint to the terminal The scheduling controlling of transmission.

If the access network node is center cooperation point, it is preferred that also including the first data transmission blocks；

It is more that the instruction that the serving BS of the cooperative multipoint transmission instruction receiving module receiving terminal is sent deactivates cooperation After the message of point transmission, first data transmission blocks are used for by the identification information of the terminal, not to the terminal transmission Or the end position of the data of the correct confirmation of the terminal, the start position information of the data and the data is not received Information is sent to the serving BS of the terminal；

If the access network node is other cooperative base stations outside serving BS, it is preferred that also including the second data Sending module；

It is described after the cooperative multipoint transmission instruction receiving module is sent to the message that instruction deactivates cooperative multipoint transmission Second data transmission blocks are used for the identification information of the terminal and do not receive to the terminal transmission or the terminal The data correctly confirmed are sent to the serving BS of the terminal；Or the cooperative multipoint transmission instruction receiving module is sent After the message that cooperative multipoint transmission is deactivated to instruction, second data transmission blocks are used to believe the mark of the terminal Breath, not the data to the terminal transmission or the correct confirmation for not receiving the terminal, the data start position information and The end position information of the data is sent to the serving BS of the terminal.

On this basis, if it is preferred that the access network node is center cooperation point, in addition to cooperative multipoint transmission refers to Show sending module；

It is more that the instruction that the serving BS of the cooperative multipoint transmission instruction receiving module receiving terminal is sent deactivates cooperation After the message of point transmission, the cooperative multipoint transmission instruction sending module is used for the cooperation of the cooperative multipoint transmission to participation terminal Other cooperative base stations outside serving BS send the message that instruction deactivates cooperative multipoint transmission in set, be sent to it is described its The instruction of his cooperative base station deactivates identification information and the deactivation that the terminal is carried in the message of cooperative multipoint transmission The configured information of cooperative multipoint transmission.

The embodiments of the invention provide the cooperative multipoint transmission control device in a kind of handoff procedure, including：

Processor, the processor are configured as the processor and are configured as performing cell switch process and cell to switch Cooperative multipoint transmission control in journey；

When the processor is configured as performing cell switch process, it is specifically：After it is determined that carrying out cell switching to terminal, Handover request message is sent to target BS, and after the handover request ack message of target BS transmission is received, upwards State terminal and send switching command, to indicate that the terminal switches to the cell of above-mentioned target BS.Wherein, the terminal is to perform cooperation The terminal of multicast communication.

When the processor is configured as performing the cooperative multipoint transmission control in cell switch process, it is specifically：It is determined that After carrying out cell switching to the terminal, judge whether the target BS supports the cooperative multipoint transmission to the terminal；Such as Target BS described in fruit supports the cooperative multipoint transmission to the terminal, the cooperation to the cooperative multipoint transmission for participating in the terminal Other access network nodes in set send handoff notification message, and the mark letter of the terminal is carried in the handoff notification message Breath, the identification information of the target BS and cooperative multipoint transmission maintain configured information；If the target BS is not supported pair The cooperative multipoint transmission of the terminal, deactivates the cooperative multipoint transmission to the terminal, and to the cooperation for participating in the terminal Other access network nodes in the cooperation set of multicast communication send the message that instruction deactivates cooperative multipoint transmission, the instruction Deactivate the identification information that the terminal is carried in the message of multicast communication and the configured information for deactivating cooperative multipoint transmission.

The embodiments of the invention provide the cooperative multipoint transmission control device in another handoff procedure, including：

Processor, the processor are configured as receiving the message that instruction deactivates cooperative multipoint transmission, and the instruction deactivates The identification information of the terminal is carried in the message of multicast communication living and deactivates the configured information of cooperative multipoint transmission；It is described to connect Network access node determines the terminal according to the identification information of the terminal, and according to the instruction of the deactivation cooperative multipoint transmission The instruction of information, deactivate the cooperative multipoint transmission of the terminal；Or handoff notification message is received, the switching notice disappears The identification information of the terminal, the identification information of the target BS and cooperative multipoint transmission are carried in breath and maintains configured information； The access network node determines the terminal according to the identification information of the terminal, true according to the identification information of the target BS The fixed target BS, and configured information is maintained according to the cooperative multipoint transmission, determine that the terminal switches to the target Continue cooperative multipoint transmission behind base station.

Device provided in an embodiment of the present invention, in cell switch process is carried out to terminal, if it is determined that target BS branch The cooperative multipoint transmission to terminal is held, maintains the cooperative multipoint transmission of the terminal, if it is determined that target BS was not supported to the end The cooperative multipoint transmission at end, deactivate the cooperative multipoint transmission of the terminal, it is not necessary to ensure the company of the cooperative multipoint transmission of terminal Continuous property, solve when performing the CoMP UE of cooperative multipoint transmission and carrying out cell switching, to CoMP UE cooperative multipoint transmission such as The problem of where is managed.

Brief description of the drawings

Fig. 1 is first method schematic diagram provided in an embodiment of the present invention；

Fig. 2 is second method schematic diagram provided in an embodiment of the present invention；

Fig. 3 is the 3rd method schematic diagram provided in an embodiment of the present invention；

Fig. 4 is the 4th method schematic diagram provided in an embodiment of the present invention；

Fig. 5 is the 5th method schematic diagram provided in an embodiment of the present invention；

Fig. 6 is base station schematic diagram provided in an embodiment of the present invention；

Fig. 7 is access network node schematic diagram provided in an embodiment of the present invention.

Embodiment

The core concept of the embodiment of the present invention is：In cell switch process, if it is determined that target BS is supported to terminal Cooperative multipoint transmission, maintain the cooperative multipoint transmission of the terminal, if it is determined that target BS does not support the cooperation to the terminal Multicast communication, deactivates the cooperative multipoint transmission of the terminal, and indicates that other access network nodes in cooperation set deactivate pin To the cooperative multipoint transmission of the terminal, it is not necessary to ensure the continuity of the cooperative multipoint transmission of terminal.

The embodiment of the present invention is applicable not only to LTE, LTE-A network, is applied equally to other and the logical of CoMP transmission be present Communication network.

Before the embodiment of the present invention is described in detail with reference to accompanying drawing, first to being related in the embodiment of the present invention Technical term is explained.

CoMP UE, refer to the UE for supporting CoMP transmission.Because the technical problem to be solved in the present invention is to perform coordinate multipoint When the CoMP UE of transmission carry out cell switching, the problem of how processing CoMP UE cooperative multipoint transmission.Therefore, it is of the invention The terminal being related in embodiment, unless otherwise instructed, refer both to perform the CoMP UE of CoMP transmission.

Base station can be eNB in LTE system or refer to the access for possessing base station functions in follow-up evolution version Net node.

Serving BS, refer to the base station belonging to the cell of terminal access.

Cooperation set, refer to the set that the access network node composition of CoMP transmission service is provided for terminal.

At least one cooperation base that can be including a CCN and including the serving BS of terminal in the cooperation set Stand.

CCN, a cooperative base station in being gathered by cooperation are served as；Can also possess relatively degree of emphasizing/data processing The independent logical functional entity of ability, executable CoMP transmission scheduling, the independent logical functional entity are deployed in cooperation set In a cooperative base station inside, or be deployed in an independent network entity.

CCN can be that OAM is pre-configured or certain area in each cooperative base station independently select to determine（Such as Each cooperative base station selection in certain area provides the base station extensively covered）.Between CCN and each cooperative base station in the set that cooperates Interface can continue to use existing X2 interface, can also define new interface, and interface connection can be established when CCN is activated.

Below in conjunction with accompanying drawing, technical scheme provided in an embodiment of the present invention is described in detail.

Cooperative multipoint transmission controlling party in cell switch process and the cell switch process provided in an embodiment of the present invention Method is as shown in figure 1, specifically include following operation：

Step 100, serving BS determine to carry out cell switching to terminal.

Step 110, serving BS send handover request message to target BS.

Step 120, serving BS receive the handover request ack message of target BS transmission.

Step 130, serving BS send switching command to the terminal, to indicate that the terminal switches to the target BS Cell.

Serving BS also performs step 140, judges above-mentioned target BS after it is determined that carrying out cell switching to the terminal Whether cooperative multipoint transmission to the terminal is supported.

If supported, step 150 is performed, otherwise, performs step 160.

Other access networks in the cooperation set of step 150, from serving BS to the cooperative multipoint transmission for participating in above-mentioned terminal Node sends handoff notification message, and identification information, the mark letter of the target BS of the terminal are carried in the handoff notification message Breath and cooperative multipoint transmission maintain configured information.

Step 160, serving BS are deactivated to the cooperative multipoint transmission of the terminal, and to the coordinate multipoint for participating in the terminal Other access network nodes in the cooperation set of transmission send the message that instruction deactivates cooperative multipoint transmission, and the instruction deactivates The identification information of the terminal is carried in the message of multicast communication and deactivates the configured information of cooperative multipoint transmission.

Wherein, serving BS is deactivated to the cooperative multipoint transmission of the terminal, is referred to not further according to cooperate and gathering The information exchange of other access network nodes is scheduled and/or transmitted to the terminal.Which operation it specifically includes, depending on the UE's Depending on CoMP transmission pattern, CoMP abilities of serving BS etc., the embodiment of the present invention is not especially limited.

In handling process shown in Fig. 1, serving BS is in cell switch process is carried out to terminal, if it is determined that target base Stand and support the cooperative multipoint transmission for the cooperative multipoint transmission of terminal, maintaining the terminal, if it is determined that target BS is not supported pair The cooperative multipoint transmission of the terminal, deactivates the cooperative multipoint transmission of the terminal, and indicates other access networks in cooperation set Node deactivates the cooperative multipoint transmission for the terminal, it is not necessary to ensures the continuity of the cooperative multipoint transmission of terminal, solves When performing the CoMP UE of cooperative multipoint transmission and carrying out cell switching, ask what how CoMP UE cooperative multipoint transmission was handled Topic.In addition, from figure 1 it appears that CoMP transmission control method provided in an embodiment of the present invention, does not change original small Area's switching flow, and can be performed parallel with original cell switching flow, its implementation is simple, and cell will not be caused to cut The delay changed.

Serving BS can have various ways to obtain information to realize whether target BS supports the cooperation to above-mentioned terminal The judgement of multicast communication.The present invention is only exemplified below：

Implementation one：

Whether serving BS is supported to above-mentioned terminal according to the target BS carried in above-mentioned handover request ack message The configured information of cooperative multipoint transmission, judges whether the target BS supports the cooperative multipoint transmission to the terminal.

Wherein, if target BS does not support cooperative multipoint transmission, then, the switching request response that target BS is sent disappears The configured information carried in breath, can be the information that target BS does not support cooperative multipoint transmission, then serving BS according to The configured information, judge that target BS does not support the cooperative multipoint transmission to the terminal.

If target BS supports cooperative multipoint transmission, then, carried in the switching request response that target BS is sent The configured information, can be the information of information and the cooperative multipoint transmission pattern supported that cooperative multipoint transmission is supported in base station. Further, if the cooperative multipoint transmission of target BS Support center scheduling method, then the configured information can be target The CCN of base station ownership identification information（Optionally also include base station and support that the information of cooperative multipoint transmission and target BS are propped up The information for the cooperative multipoint transmission pattern held）；If the cooperative multipoint transmission of target BS not Support center scheduling method, then The configured information can support the information and the not letter of the cooperative multipoint transmission of Support center scheduling method of cooperative multipoint transmission Breath, or the configured information can be the information for the cooperative multipoint transmission that target BS supports non-central scheduling.For example, terminal is current What is carried out is the cooperative multipoint transmission of central dispatching, and carrying base station in the handover request ack message supports cooperative multipoint transmission The information of information and base station not Support center scheduling method, then, serving BS judges target BS not according to the configured information Support the cooperative multipoint transmission to the terminal.In another example terminal currently carry out be central dispatching cooperative multipoint transmission, this is cut The information for carrying base station support cooperative multipoint transmission and the information of base station Support center scheduling method are changed in request response, that , serving BS judges that target BS supports the cooperative multipoint transmission to the terminal according to the configured information.

If the configured information carried in switching request response is information and the base station of base station support cooperative multipoint transmission The information of Support center scheduling method.And scheduling method centered on the cooperative multipoint transmission of above-mentioned terminal, then serving BS is to ginseng Sending handoff notification message with other access network nodes in the set that cooperates of the cooperative multipoint transmission of terminal can specifically refer to The center cooperation point in cooperation set to the cooperative multipoint transmission for participating in the terminal sends handoff notification message, optionally, should The identification information of the center cooperation point of the cooperation set belonging to target BS is also carried in switching request response.

Under this implementation, optionally, serving BS can also be in the handover request message of target BS be sent to CoMP transmission capability requests information is carried, the CoMP transmission capability requests information is used to indicate that target BS sends whether it supports To the configured information of the cooperative multipoint transmission of above-mentioned terminal.Further, serving BS can also be taken in handover request message The configured information of the cooperative multipoint transmission to above-mentioned terminal whether is supported with serving BS.

Implementation two：

Whether OAM supports each base station to be sent to each base to the configured information of the cooperative multipoint transmission of above-mentioned terminal in advance Stand.

Whether the instruction of cooperative multipoint transmission to the terminal is supported in each base station that serving BS is sent in advance according to OAM Information, judges whether the target BS supports the cooperative multipoint transmission to the terminal.

Wherein, for not supporting the base station of cooperative multipoint transmission, whether the base station that OAM is sent is supported to above-mentioned terminal The configured information of cooperative multipoint transmission is specifically that the base station does not support the information of cooperative multipoint transmission, then serving BS according to The configured information, judge that target BS does not support the cooperative multipoint transmission to the terminal.

Whether the base station for supporting cooperative multipoint transmission, the base station that OAM is sent support that the cooperation to above-mentioned terminal is more The configured information of point transmission is specifically that the information of cooperative multipoint transmission and the cooperative multipoint transmission of base station support are supported in the base station The information of pattern（For example whether Support center scheduling method）, optionally, include the CCN of base station ownership identification information.Tool Body, if the cooperative multipoint transmission of base station Support center scheduling method, then the configured information can be target BS ownership CCN identification information（The coordinate multipoint that information and base station optionally also including base station support cooperative multipoint transmission are supported The information of transmission mode）；If the cooperative multipoint transmission of base station not Support center scheduling method, then the configured information can be Support the information and the not information of the cooperative multipoint transmission of Support center scheduling method, or the configured information can of cooperative multipoint transmission To be the information for the cooperative multipoint transmission that non-central scheduling is supported in base station.For example, terminal currently carry out be central dispatching association Make multicast communication, the configured information is that the information of cooperative multipoint transmission and the letter of base station not Support center scheduling method are supported in base station Breath, then, serving BS judges that target BS does not support the cooperative multipoint transmission to the terminal according to the configured information.Example again Such as, what terminal was currently carried out is the cooperative multipoint transmission of central dispatching, and the configured information is that cooperative multipoint transmission is supported in base station The information of information and base station Support center scheduling method, then, serving BS judges that target BS is supported according to the configured information To the cooperative multipoint transmission of the terminal.

The information of cooperative multipoint transmission and base station Support center is supported to dispatch if the configured information that OAM is sent is base station The information of pattern.And scheduling method centered on the cooperative multipoint transmission of above-mentioned terminal, then cooperation of the serving BS to participation terminal Other access network nodes in the cooperation set of multicast communication, which send handoff notification message, can specifically be directed to participate in the terminal Cooperative multipoint transmission cooperation set in center cooperation point send handoff notification message, optionally, the switching request response In also carry belonging to target BS cooperation set center cooperation point identification information.

Implementation three：

Whether interaction each supports the configured information of the cooperative multipoint transmission to above-mentioned terminal in advance between each base station.

Wherein, for not supporting the base station of cooperative multipoint transmission, the association whether supported to above-mentioned terminal that the base station is sent The configured information for making multicast communication is specifically that the base station does not support the information of cooperative multipoint transmission, then serving BS is according to this Configured information, judge that target BS does not support the cooperative multipoint transmission to the terminal.

Base station for supporting cooperative multipoint transmission, whether what the base station was sent supports the coordinate multipoint biography to above-mentioned terminal Defeated configured information is specifically that the information of cooperative multipoint transmission and the cooperative multipoint transmission pattern of base station support are supported in the base station Information（For example whether Support center scheduling method）Optionally, the CCN of base station ownership identification information is included.Specifically, If the cooperative multipoint transmission of base station Support center scheduling method, then the configured information can be the CCN of target BS ownership Identification information（The cooperative multipoint transmission mould that information and base station optionally also including base station support cooperative multipoint transmission are supported The information of formula）；If the cooperative multipoint transmission of base station not Support center scheduling method, then the configured information can support association Make the information and the not information of the cooperative multipoint transmission of Support center scheduling method, or the configured information can be base of multicast communication The information for the cooperative multipoint transmission for supporting non-central scheduling of standing.For example, terminal currently carry out be central dispatching coordinate multipoint Transmission, the configured information are that the information of cooperative multipoint transmission and the information of base station not Support center scheduling method are supported in base station, that , serving BS judges that target BS does not support the cooperative multipoint transmission to the terminal according to the configured information.In another example eventually Hold currently carry out be central dispatching cooperative multipoint transmission, the configured information be base station support cooperative multipoint transmission information and The information of base station Support center scheduling method, then, serving BS judges that target BS was supported to the end according to the configured information The cooperative multipoint transmission at end.

If with the configured information that target BS interacts in advance be target BS support cooperative multipoint transmission information and The information of target BS Support center scheduling method.And scheduling method centered on the cooperative multipoint transmission of above-mentioned terminal, then service It is specific that other access network nodes in cooperation set of from the base station to the cooperative multipoint transmission of participation terminal send handoff notification message The center cooperation point in gathering that cooperates that the cooperative multipoint transmission of the terminal can be directed to participate in sends handoff notification message, can Choosing, the identification information for the center cooperation point that the cooperation belonging to target BS is gathered also is carried in the switching request response.

Serving BS is according to the instruction whether supported to the cooperative multipoint transmission of above-mentioned terminal of interaction is believed in advance between base station Breath, judges whether target BS supports the cooperative multipoint transmission to the terminal.

Implementation four：

Base station during the center cooperation point in cooperation set where serving BS is gathered to cooperation in advance is sent in network Whether the configured information of cooperative multipoint transmission to above-mentioned terminal is supported in each base station.

Wherein, for not supporting the base station of cooperative multipoint transmission, whether the base station that center cooperation point is sent is supported to upper The configured information for stating the cooperative multipoint transmission of terminal is specifically that the base station does not support the information of cooperative multipoint transmission, then service Base station judges that target BS does not support the cooperative multipoint transmission to the terminal according to the configured information.

Whether the base station for supporting cooperative multipoint transmission, the base station that center cooperation point is sent are supported to above-mentioned terminal The configured information of cooperative multipoint transmission is specifically that the base station supports that the information of cooperative multipoint transmission and the cooperation of base station support are more The information of point transmission mode（For example whether Support center scheduling method）, optionally, the CCN of base station ownership identification information.Tool Body, if the cooperative multipoint transmission of base station Support center scheduling method, then the configured information can be target BS ownership CCN identification information（The coordinate multipoint that information and base station optionally also including base station support cooperative multipoint transmission are supported The information of transmission mode）；If the cooperative multipoint transmission of base station not Support center scheduling method, then the configured information can be Support the information and the not information of the cooperative multipoint transmission of Support center scheduling method, or the configured information can of cooperative multipoint transmission To be the information for the cooperative multipoint transmission that non-central scheduling is supported in base station.For example, terminal currently carry out be central dispatching association Make multicast communication, the configured information is that the information of cooperative multipoint transmission and the letter of base station not Support center scheduling method are supported in base station Breath, then, serving BS judges that target BS does not support the cooperative multipoint transmission to the terminal according to the configured information.Example again Such as, what terminal was currently carried out is the cooperative multipoint transmission of central dispatching, and the configured information is that cooperative multipoint transmission is supported in base station The information of information and base station Support center scheduling method, then, serving BS judges that target BS is supported according to the configured information To the cooperative multipoint transmission of the terminal.

If the configured information that CCN is sent in advance is the information and target BS that target BS supports cooperative multipoint transmission The information of Support center scheduling method.And scheduling method centered on the cooperative multipoint transmission of above-mentioned terminal, then serving BS is to ginseng Sending handoff notification message with other access network nodes in the set that cooperates of the cooperative multipoint transmission of terminal can specifically refer to The center cooperation point in cooperation set to the cooperative multipoint transmission for participating in the terminal sends handoff notification message, optionally, should The identification information of the center cooperation point of the cooperation set belonging to target BS is also carried in switching request response.

Wherein, by information exchange between the cooperation point of center, whether the base station shared in this cooperation set is supported to above-mentioned The configured information of the cooperative multipoint transmission of terminal.

Whether support to the end each base station that center cooperation point of the serving BS in above-mentioned cooperation set is sent in advance The configured information of the cooperative multipoint transmission at end, judges whether target BS supports the cooperative multipoint transmission to the terminal.

Based on above-mentioned any implementation, it is preferred that collaboration set of the serving BS to the cooperative multipoint transmission of participation terminal Before center cooperation point in conjunction sends handoff notification message, the center cooperation point for the set that can be cooperated according to where target BS Identification information, judge whether the target BS and serving BS belong to same center cooperation point；If be not belonging to, serving BS Above-mentioned handoff notification message is sent to target BS, so that the handoff notification message is sent to target BS cooperation by target BS Center cooperation point in set；If belonged to, collaboration set of the serving BS to the cooperative multipoint transmission for participating in the terminal Center cooperation point in conjunction sends handoff notification message.

In addition, MME is changed or can not performed in the S1 handoff procedures of X2 switchings, serving BS can also be in handover During required, notice source MME target BS mark and target BS affiliated CCN marks, source MME is by target BS mark Know, the affiliated CCN identification notifications of target BS give target MME（If MME relocate）, as belonging to target MME notice target BS CCN target BS identifies and handover information, and then CCN indicates target BS switching, and handover-related message is notified to target Base station（In this case, MME needs base station maintenance and CCN relation list）.The CoMP UE data do not transmitted are handed over by serving BS Mutually give target BS.

Based on above-mentioned any serving BS side embodiment of the method, the coordinate multipoint biography to terminal is not supported for target BS Defeated situation.The access network node that cooperation set includes is different, and accordingly, the specific implementation of step 160 is also different.

Situation one：If participate in only including center cooperation point kimonos in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal Business base station, then, other access network nodes in cooperation set to the cooperative multipoint transmission for participating in above-mentioned terminal, which are sent, to be indicated The message for deactivating cooperative multipoint transmission refers to：The message of instruction deactivation cooperative multipoint transmission is sent to the center cooperation point.

Wherein, deactivated to the instruction that center cooperation point is sent in the message of cooperative multipoint transmission except carrying above- mentioned information Outside, information, the identification information of serving BS, and/or the identification information of cell-of-origin for deactivating reason can also be carried.

Situation two：If participating in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal includes center cooperative node, clothes Other cooperative base stations outside business base station and serving BS, then, to the collaboration set for the cooperative multipoint transmission for participating in above-mentioned terminal The message that other access network nodes in conjunction send instruction deactivation cooperative multipoint transmission can refer to：To the center cooperation point hair Instruction is sent to deactivate cooperative multipoint transmission message, and other cooperative base stations into the conjunction of above-mentioned collaboration set send instruction and deactivate association Make multicast communication message.

Wherein, deactivated to the instruction that center cooperation point is sent in the message of cooperative multipoint transmission except carrying above- mentioned information Outside, information for deactivating reason etc. can also be carried.

Deactivated to the instruction that other cooperative base stations are sent in the message of cooperative multipoint transmission in addition to carrying above- mentioned information, Can also carry the identification information of serving BS, cell-of-origin identification information, terminal cooperative multipoint transmission corresponding to running time-frequency resource Information of information, and/or deactivation reason etc..

Situation three：If participating in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal includes center cooperative node, clothes Other cooperative base stations outside business base station and serving BS, then, to the collaboration set for the cooperative multipoint transmission for participating in above-mentioned terminal The message that other access network nodes in conjunction send instruction deactivation cooperative multipoint transmission can also refer to：Only cooperated to the center Point sends instruction and deactivates cooperative multipoint transmission message.

Accordingly, center cooperation point is closed after receiving instruction and deactivating cooperative multipoint transmission message to above-mentioned collaboration set In other cooperative base stations send instruction deactivate cooperative multipoint transmission message.

Deactivated to the instruction that other cooperative base stations are sent in the message of cooperative multipoint transmission in addition to carrying above- mentioned information, Serving BS mark/cell-of-origin mark can also be carried, running time-frequency resource information corresponding to the cooperative multipoint transmission of terminal, and/or Deactivate information of reason etc..

Situation four：If participate in the cooperation set of the cooperative multipoint transmission of above-mentioned terminal only serving BS and serving BS Outside other cooperative base stations, then, other access networks in cooperation set to the cooperative multipoint transmission for participating in above-mentioned terminal The message that node sends instruction deactivation cooperative multipoint transmission can also refer to：Other cooperative base stations in gathering to cooperation are sent Instruction deactivates cooperative multipoint transmission message.

Wherein, deactivated to the instruction that other cooperative base stations are sent in the message of cooperative multipoint transmission except carrying above-mentioned letter Breath is outer, can also carry serving BS mark/cell-of-origin mark, running time-frequency resource information corresponding to the cooperative multipoint transmission of terminal, And/or deactivate the information of reason etc..

For one~situation of the above situation three, if center cooperation point also has not to above-mentioned terminal transmission or not received The ACK of terminal data are stated, can also send these data to serving BS.So, instruction is sent to center cooperation point to deactivate After the message of cooperative multipoint transmission living, serving BS is also possible to receive the mark letter for the above-mentioned terminal that above-mentioned center cooperation point is sent Cease, not to the terminal transmission or the ACK for not receiving the terminal data, the start position information of the data and the knot of the data Beam position information；Then, serving BS association preserves identification information, the data, the start position information of the data of the terminal With the end position information of the data.

For the above situation four, if other cooperative base stations also have not to above-mentioned terminal transmission or do not receive the terminal ACK data, can also send these data to serving BS.So, other cooperative base stations in being closed to above-mentioned collaboration set After sending the message that instruction deactivates cooperative multipoint transmission, serving BS is also possible to receive the above-mentioned end of other cooperative base stations transmission The identification information at end, the not data to the terminal transmission or the ACK for not receiving the terminal, the data start position information and The end position information of the data；Then, serving BS association preserves the identification information of the terminal, the data, the data and opened The end position information of beginning positional information and the data.

Wherein, the purpose for associating preservation is that serving BS is when needing these data for the terminal to be handled, energy Enough by incidence relation, the data of the terminal and corresponding data message are determined.The specific implementation that the present invention does not preserve to association Mode is limited.

For the above situation one~tetra-, if serving BS receives center cooperation point or other cooperative base stations send Not to above-mentioned terminal transmission or the data for the ACK for not receiving the terminal, both can by these data interactions to target BS, Can be before the handover request ack message of target BS transmission be received, according to the start position information and knot of above-mentioned data Beam position information, it is that above-mentioned terminal order dispatches these data according to unicast pattern.

Cooperative multipoint transmission control method such as Fig. 2 institutes in another cell switch process provided in an embodiment of the present invention Show, specifically include following operation：

Access during the cooperation of step 200, the cooperative multipoint transmission of participation terminal is gathered outside the serving BS of the terminal Net node receives the message that instruction deactivates cooperative multipoint transmission.

Wherein, the instruction deactivates the identification information that the terminal is at least carried in the message of multicast communication and deactivated and cooperates The configured information of multicast communication.

Step 210, the access network node determine the terminal according to the identification information of the terminal, and are cooperated according to the deactivation The instruction of the configured information of multicast communication, deactivate the cooperative multipoint transmission of the terminal.

In the embodiment of the present invention, above-mentioned access network node both can be CCN in above-mentioned cooperation set or on State other cooperative base stations outside serving BS in cooperation set.

If the access network node is CCN, then above-mentioned instruction deactivates can also take in the message of cooperative multipoint transmission With information, the identification information of serving BS and/or the identification information of cell-of-origin for deactivating reason.

If the access network node is other cooperative base stations, then may be used also in the message of above-mentioned deactivation cooperative multipoint transmission With carry the identification information of serving BS, the identification information of cell-of-origin, terminal cooperative multipoint transmission corresponding to running time-frequency resource letter Information of breath, and/or deactivation reason etc..

Wherein, access network node deactivates the cooperative multipoint transmission to the terminal, refers to that stopping all may influenceing to service Behavior of the base station to the terminal scheduling.Which operation it specifically includes, the CoMP transmission pattern, the access network node depending on the UE Depending on CoMP abilities etc., the embodiment of the present invention is not especially limited.

For example, if access network node is CCN, the CCN deactivates the message of cooperative multipoint transmission receiving instruction Afterwards, control no longer is scheduled to the UE.If the data surface path to the cooperative multipoint transmission of the terminal is S-GW<—>CCN <—>Serving BS<—>Terminal, the CCN also no longer carry out data transmission to the UE.If the CCN is also equipped with to the terminal Data buffer storage function, the CCN no longer cache to the data of the terminal, and empty the data in caching.

For example, if access network node is other cooperative base stations, other cooperative base stations are receiving instruction deactivation association After making the message of multicast communication, stop the data transfer to the terminal, discharge running time-frequency resource corresponding to the CoMP transmission of the terminal. If carry out CoMP transmission to the terminal, pre-coding matrix is used by limitation, other cooperative base stations can also release pre- to this The limitation of encoder matrix.In addition, for the data not yet transmitted, other cooperative base stations can be interacted to serving BS, can also Abandoned, without interaction to serving BS.

In handling process shown in Fig. 2, in cell switch process is carried out to terminal, other access networks in cooperation set Node deactivates the cooperative multipoint transmission for the terminal, it is not necessary to ensures the continuity of the cooperative multipoint transmission of terminal, solves When performing the CoMP UE of cooperative multipoint transmission and carrying out cell switching, ask what how CoMP UE cooperative multipoint transmission was handled Topic.

Based on the embodiment shown in Fig. 2, if access network node is CCN, and it is more receiving instruction deactivation cooperation After the message of point transmission, the CCN also has not to the terminal transmission or the data for the ACK for not receiving the terminal.So, CCN connects After the message of instruction deactivation cooperative multipoint transmission for receiving the serving BS transmission of terminal, the mark of above-mentioned terminal can also be believed Cease, not to the terminal transmission or the ACK for not receiving the terminal data, the start position information of the data and the knot of the data Beam position information is sent to the serving BS of the terminal.

Above-mentioned any access network node side embodiment of the method based on Fig. 2, if the access network node is CCN, and cooperates There are other cooperative base stations in set.So, the instruction that the serving BS of CCN receiving terminals is sent deactivates cooperative multipoint transmission Message after, other cooperative base stations in cooperation set that can also be to the cooperative multipoint transmission of participation terminal outside serving BS The message that instruction deactivates cooperative multipoint transmission is sent, the instruction for being sent to other cooperative base stations deactivates cooperative multipoint transmission The identification information of the terminal is at least carried in message and deactivates the configured information of cooperative multipoint transmission.Optionally, the instruction is gone Serving BS mark, cell-of-origin mark, the cooperative multipoint transmission of terminal can also be carried by activating in the message of cooperative multipoint transmission Information of corresponding running time-frequency resource information, and/or deactivation reason etc..

From the description of serving BS side embodiment of the method, when also including other cooperative base stations during cooperation is gathered, clothes Being engaged in base station may also be to the message of other cooperative base stations transmission instruction deactivation cooperative multipoint transmission.In order to avoid repeating to send, It can be pre-configured with or arrange specifically still to send instruction deactivation coordinate multipoint from serving BS to other cooperative base stations from CCN The message of transmission.

Based on the embodiment shown in Fig. 2, if access network node is other cooperative base stations outside serving BS, this other Cooperative base station also has not to the terminal transmission or the data for the ACK for not receiving the terminal.So, other cooperative base stations receive eventually After the instruction that the serving BS at end is sent deactivates the message of cooperative multipoint transmission, can also by the identification information of above-mentioned terminal and The serving BS of the terminal is not sent to the data of the terminal transmission or the ACK for not receiving the terminal.Optionally, also send The start position information of the data and the end position information of the data.

Cooperative multipoint transmission control method such as Fig. 3 institutes in another cell switch process provided in an embodiment of the present invention Show, specifically include following operation：

Access during the cooperation of step 300, the cooperative multipoint transmission of participation terminal is gathered outside the serving BS of the terminal Net node receives handoff notification message.

Wherein, at least carried in the handoff notification message identification information of the terminal, the identification information of the target BS and Cooperative multipoint transmission maintains configured information.

Step 310, the access network node determine the terminal according to the identification information of the terminal, according to the mark of the target BS Know information and determine the target BS, and configured information is maintained according to the cooperative multipoint transmission, determine that the terminal switches to the target Continue cooperative multipoint transmission behind base station.

Access network node provided in an embodiment of the present invention, in cell switch process is carried out to terminal, cut if received Notification message is changed, the access network node determines to maintain the cooperative multipoint transmission of terminal.Solve the CoMP UE for performing CoMP transmission When carrying out cell switching, the problem of how processing CoMP UE cooperative multipoint transmission.

Access network node in the embodiment of the present invention, both can be the CCN in above-mentioned cooperation set or above-mentioned association Make other cooperative base stations outside serving BS in gathering.

If the access network node is the CCN in above-mentioned cooperation set, it is preferred that also being carried in above-mentioned handoff notification message The identification information of the center cooperation point of cooperation set where the target BS.

If the access network node is the CCN in above-mentioned cooperation set, any embodiment based on Fig. 3, it is preferred that determining Terminal is switched to after target BS continue cooperative multipoint transmission after, this method also includes：Suspend the cooperation to the terminal The scheduling controlling of multicast communication；Then the identification information for the center cooperation point that the cooperation according to where target BS is gathered, judging should The center cooperation point of cooperation set where target BS whether this center cooperation point；If it is, confirm that the terminal is switched to target Behind base station, path handoff procedure is not initiated to core net node, continue to carry out the terminal scheduling controlling of cooperative multipoint transmission.

If it is not, then center cooperation point can not be dealt with, serving BS can also be notified, so that serving BS is to mesh Mark base station and send above-mentioned handoff notification message.

If the access network node is the CCN in above-mentioned cooperation set, any embodiment based on Fig. 3, it is preferred that determining Terminal is switched to after target BS continue cooperative multipoint transmission after, this method also includes：Suspend the cooperation to the terminal Multicast communication；After confirming that the terminal is switched to target BS, interacted with the target BS, continue to cooperate to the terminal Multicast communication.

Method provided in an embodiment of the present invention will be illustrated so that network side node coordinates implementation as an example below.

Before processing procedure is described, the data under the CoMP central dispatching scenes using this method are introduced first Transmission architecture.

Framework one：Data transfer path between CoMP UE and core net is S-GW<—>Serving BS<—>CoMP UE （I.e. data-direct connection interface is present between S-GW and CoMP UE serving BS）, CCN and serving BS are provided with dispatching work( Energy.

Under this framework, the cooperative scheduling that CCN and serving BS perform can have following several implementations：

CCN is performed to CoMP UE master scheduling function, serving BS dispatched according to CCN perform CoMPUE data transfers and Non- CoMP UE scheduling and data transfer；

CCN performs the master scheduling function to CoMP UE, is responsible for CoMP UE scheduling cooperative multipoint transmission transmission, serving BS It is responsible for scheduling and the data transfer such as the scheduling of CoMP UE unicasts and transmission and non-CoMP UE scheduling；

CCN performs the pre-scheduling to CoMP UE, and serving BS performs CoMP UE actual schedule.

In addition, CCN can also be further equipped with to CoMP UE temporary data storage functions and corresponding caching（buffer）.

Framework two：Data transfer path between CoMP UE and core net is S-GW<—>CCN<—>Serving BS<—> UE（That is data-direct connection interface is present between S-GW and CCN）, CCN and serving BS are provided with scheduling feature.

Under this framework, CCN is CoMP UE and the data relay point of core net.During UE RCC connections foundation, service UE types are known in base station, and if the UE for supporting CoMP transmission, serving BS is according to UE types（Whether CoMP transmission is supported）, it is current Network judges whether to indicate that the RAN sides that the core net UE is connected are used to CoMP tenability situation with factors such as network side strategies Family plane anchor point is CCN；Or established user plane anchor point in serving BS using prior art, can be in triggering CoMP UE During cooperative multipoint transmission, pass through switching, path handover request（path switch request）User plane anchor point is changed etc. process For CCN.Particularly, the control plane anchor point of user can be the serving BS of the UE under this framework, can also be by chain of command road Footpath is changed to MME<—>CCN<—>Serving BS<—>Terminal, to reduce handover overhead.

Scheduling implementation under this framework is similar with framework one, repeats no more here.

For above-mentioned framework one, it is switched to CoMP UE from the serving BS of support CoMP transmission and does not support CoMP transmission Target BS X2 switchings exemplified by, CoMP transmission control method in a kind of handoff procedure and handoff procedure is as shown in figure 4, tool Body includes following operation：

Step 400, serving BS determine to carry out cell switching to CoMP UE.

Specifically, serving BS reports handover measurement reported result according to CoMP UE（Such as RSRP/RSRQ）, judgement is It is no to meet switching condition.If it is satisfied, then determine to carry out cell switching to CoMP UE.

Step 410a, serving BS sends handover request message to each alternative target base station.

Wherein, handoff request message prepares relevant parameter containing switching, sentences to help alternative target base station to perform receiving Certainly, the work such as radio-resource-configuration.

Optionally, CoMP transmission capability requests information, the CoMP transmission capability requests are also included in the handover request message Information is used to indicate that target BS sends its configured information for whether supporting the cooperative multipoint transmission to above-mentioned terminal.Further , serving BS can also carry whether serving BS supports cooperative multipoint transmission to above-mentioned terminal in handover request message Configured information.

Step 420a, allow to receive above-mentioned CoMP UE alternative target base station to send switching request response to serving BS.

Specifically, each alternative target base station receives the handover request message that serving BS is sent, according to carrying to be accepted Service quality（QoS）The information such as information, current interference, load condition carries out acceptance judging.If alternative target base station allows The CoMP UE are received, then bottom configuration are carried out, to prepare to switch.

Alternative target base station is at least carried to the wireless of the CoMPUE to the handover request ack message that serving BS returns Resource allocation information.

Optionally, can also carry instruction in the handover request ack message that alternative target base station returns to serving BS is The information of the no information for supporting CoMP transmission and the CoMP transmission pattern of support.Both serving BS transmission can received After CoMP transmission capability requests information, these information are sent, can also actively send these information.With specific reference to advance configuration Or depending on agreement.

Step 430a, after serving BS receives the handover request ack message of alternative target base station transmission, to CoMP UE Switching command is sent, stops the data transmit-receive of the CoMP UE on this base station, and will not transmitted or unacknowledged data interaction is to mesh Mark base station.

Wherein, if multiple alternative target base stations return handover request ack message to serving BS, then base is serviced Therefrom selection one of standing is used as target BS.

Wherein, serving BS is sent to CoMP UE switching command and can carried in RRC connection reconfiguration messages.

Step 440a, after CoMP UE perform the synchronization with target BS, the cell of target BS is switched to.

Specifically, after CoMP UE receive the switching command of serving BS transmission, stop the data transmit-receive with serving BS, Synchronization operation is performed with target BS, Radio Resource is carried out and carrying is matched somebody with somebody again.

After synchronously completing, CoMP UE return to handoff completion message to target BS（RRC reconfigures completion message）.Target After base station receives this message, RLC ACK message is returned, starts simultaneously at the transmission for carrying out downlink data；And core net is notified to turn Change path（Path switch request processes are triggered, notice core network data transmission path is changed to SGW<—>Target base Stand<—>CoMP UE）.Target BS receives path Handover Request Acknowledge（path switch request ack）Afterwards, notice clothes Business base station discharges old carrying and UE contexts.CoMP UE are after receiving RRC and reconfiguring the ACK of completion message, with target base Target of standing carries out upstream data transmission.

Optionally, target BS（That is, the serving BS after switching）According to above-mentioned CoMP UE type（Whether support CoMP transmission）, above-mentioned CoMP UE wireless channel condition, this base station support the factors such as CoMP ability, base station strategy, it is determined that Whether CoMP transmission to above-mentioned CoMP UE is started.

If it is determined that starting the CoMP transmission to above-mentioned CoMP UE, but it is before the non-TM10 of transmission mode of UE configurations, then It is TM10 that target BS, which needs to reconfigure CoMP UE transmission modes,.

If target BS determines not starting the CoMP transmission to above-mentioned CoMP UE, according to unicast pattern to this CoMP UE are scheduled transmission.

If target BS determines to start to above-mentioned CoMP UE CoMP transmission, where target BS to the target BS The CCN of cooperation set sends the message of instruction CoMP transmission activation.

If connected specifically, target BS is not established with its CCN, the connection between target BS triggering and CCN is built Vertical process, and after the completion of connection is established, the message of instruction CoMP transmission activation is sent to its CCN.Comprised at least in the message CoMP UE identification information, the identification information of the target BS, the identification information of present access subzone, and/or activation reason etc. Information.

If target BS and its CCN framework are above-mentioned framework two, target BS judges that activation CoMPUE cooperation is more When putting transfer function and notifying CCN, while handoff procedure is triggered, either path switch request or other existing mistakes Journey, CoMP UE data transfer anchor points are changed, the data transfer anchor point of the CoMP UE is changed to CCN.Or CoMP UE Cooperative multipoint transmission can also be activated by CCN.

Step 430b, serving BS is according to the letter for indicating whether to support CoMP transmission carried in above-mentioned switching request response The information of breath and the CoMP transmission pattern supported, determines that target BS does not support the CoMP transmission to above-mentioned CoMP UE.

It should be pointed out that if serving BS is by other means（The embodiment two~tetra- of example description is performed as described above） Know the CoMP transmission pattern whether target BS is supported the information of CoMP transmission and supported in advance, then can be it is determined that carrying out small Any time after area's switching determines that target BS does not support the CoMP transmission to above-mentioned CoMP UE.

Step 440b, serving BS deactivates the CoMP transmission to CoMP UE, and sends instruction to CCN and deactivate CoMP The message of transmission.

Wherein, be sent to CCN instruction deactivate CoMP transmission message at least carry the CoMP UE identification information and CoMP transmission deactivates configured information.Optionally, it can also carry and deactivate the information such as reason.

It should be pointed out that step 430a and step 430b can be performed parallel, limited in the absence of the priority in sequential.

Step 450b, after CCN receives the message of instruction deactivation CoMP transmission of serving BS transmission, to the CoMP UE Deactivate the operation of CoMP transmission.

Specifically, CCN determines that the message is targeted first according to the CoMP UE carried in message identification information CoMP UE.Then, configured information is deactivated according to the CoMP transmission carried in message, to the cooperative multipoint transmission of the CoMP UE Control function deactivates, and is no longer scheduled control to the data transfer of the CoMP UE, no longer carries out the data to CoMP UE Transmission, the behavior that serving BS is dispatched to the CoMP UE may be influenceed by stopping all.If CCN is also equipped with temporary to CoMP UE data When depositing function and corresponding buffer, CCN also deactivate to should CoMP UE temporary data storage function, and empty buffer In data.

If also carrying the information for deactivating reason in message, CCN also records the deactivation reason, so as to subsequent analysis control System uses.

Optionally, if the cooperation for participating in above-mentioned CoMP UE CoMP transmission also includes its outside serving BS in gathering His cooperative base station, other cooperative base stations in can gathering from serving BS to cooperation send instruction and deactivate disappearing for CoMP transmission Breath.

The instruction for being sent to other cooperative base stations deactivates the mark that above-mentioned CoMP UE are at least carried in the message of CoMP transmission Know information and CoMP transmission deactivates configured information.Optionally, following at least one information can also be included：The mark of serving BS Know information, the identification information of cell-of-origin, the CoMP UE CoMP transmission corresponding to running time-frequency resource information, deactivate the letter such as reason Breath.

It should be pointed out that the priority that the operation is not present with step 440b in sequential limits, can perform parallel.

Optionally, if the cooperation for participating in above-mentioned CoMP UE CoMP transmission also includes its outside serving BS in gathering After his cooperative base station or CCN receive the message that instruction deactivates CoMP transmission, its in gathering from CCN to cooperation His cooperative base station sends the message that instruction deactivates CoMP transmission.

Other cooperative base stations in cooperation set are after the message of instruction deactivation CoMP transmission is received, deactivation pair CoMP UE CoMP transmission.

Specifically, other cooperative base stations determine the message institute first according to the CoMP UE carried in message identification information For CoMP UE.Then, configured information is deactivated according to the CoMP transmission carried in message, no longer carried out to CoMP UE's Data transfer, discharge running time-frequency resource corresponding to the CoMP transmission of the CoMP UE（If the letter of the running time-frequency resource is carried in message Breath, then corresponding running time-frequency resource is discharged according to the information of the running time-frequency resource.If do not carried, when determining this by other means Frequency resource, such as the running time-frequency resource information locally is preserved, or individually obtain the running time-frequency resource information from serving BS or CCN Etc.）.If carry out CoMP transmission to the CoMP UE, pre-coding matrix is used by limitation, other cooperative base stations can also solve Except the limitation to the pre-coding matrix.If also carrying the information for deactivating reason in message, other cooperative base stations also preserve this The information of reason is deactivated, to analyze use in the future.For the data to the CoMP UE not yet transmitted, other cooperation bases Standing to be abandoned, without interaction to serving BS.

For above-mentioned framework two, it is switched to CoMP UE from the serving BS of support CoMP transmission and does not support CoMP transmission Target BS X2 switching exemplified by, the CoMP transmission control method in a kind of handoff procedure and handoff procedure is referred to Fig. 4 Handling process.

But after CCN receives the message of instruction deactivation CoMP transmission of serving BS transmission, if not to above-mentioned CoMP UE transmit or not received above-mentioned CoMP UE ACK data, and the mark that the CoMP UE are sent to serving BS is believed Cease, not to CoMP UE transmission and/or the ACK for not receiving the CoMP UE data（The data are made up of several RB）, often End of data corresponding to individual RB（data end）Mark, data corresponding to each RB start（data start）The information such as mark.

Serving BS association preserve CoMP UE identification information, above-mentioned data, data end marks corresponding to each RB and Data start are identified.

For CCN send data, serving BS both can before switching request response is received to these data according to non- Cooperative multipoint transmission is scheduled.These data can also be given in company with data notification waiting for transmission in hand-off execution process Target BS.

Serving BS receive release instruction after, trigger CCN between to should CoMP UE interface Connection Release mistake Journey.

For above-mentioned framework two, with CoMP UE from supporting the serving BS of CoMP transmission to be switched to the target under same CCN Exemplified by the X2 switchings of base station, a kind of CoMP transmission control method in handoff procedure and handoff procedure as shown in figure 5, including：

Step 500, serving BS determine to carry out cell switching to CoMP UE.

Step 510a, serving BS sends handover request message to each alternative target base station.

Step 520a, allow to receive above-mentioned CoMP UE alternative target base station to send switching request response to serving BS.

Step 530a, after serving BS receives the handover request ack message of alternative target base station transmission, to CoMP UE Switching command is sent, stops the data transmit-receive of the CoMP UE on this base station, and will not transmitted or unacknowledged data interaction is to mesh Mark base station.

Step 540a, after CoMP UE perform the synchronization with target BS, the cell of target BS is switched to.

After synchronously completing, CoMP UE return to handoff completion message to target BS（RRC reconfigures completion message）.Target After base station receives this message, RLC ACK message is returned, starts simultaneously at the transmission for carrying out downlink data.Target BS receives road After footpath switching confirms, notice serving BS discharges old carrying and UE contexts.CoMP UE reconfigure completion receiving RRC After the ACK of message, upstream data transmission is carried out with target BS target.

Step 530b, serving BS is according to the letter for indicating whether to support CoMP transmission carried in above-mentioned switching request response The CCN information of information and the target BS ownership of breath and the CoMP transmission pattern supported, determines that target BS is supported to above-mentioned CoMP UE CoMP transmission, and belong to same CCN.

It should be pointed out that if serving BS is by other means（The embodiment two~tetra- of example description is performed as described above） Know whether target BS supports the CCN of the information of CoMP transmission and CoMP transmission pattern and the target BS ownership of support in advance Information, then can it is determined that any time carried out after cell switching determine that target BS is supported to above-mentioned CoMP UE CoMP Transmission.

It should be pointed out that step 510a and step 510b can be performed parallel, limited in the absence of the priority in sequential.

Step 540b, serving BS sends handoff notification message to CCN.

Wherein, identification information, the mark of target BS that CoMP UE are carried in the CCN handoff notification message are sent to Know information and cooperative multipoint transmission maintains configured information.

Step 550b, after CCN receives handoff notification message, the CoMP UE, root are determined according to the identification information of the CoMP The target BS is determined according to the identification information of the target BS, and configured information is maintained according to the cooperative multipoint transmission, it is determined that should CoMP UE continue cooperative multipoint transmission after switching to the target BS.

Step 560b, CCN suspends the scheduling controlling to the cooperative multipoint transmission of the terminal, and is assisted according to where target BS Make the CCN identification information gathered, the CCN of cooperation set where judging the target BS whether this CCN.

If it is, perform step 570b, otherwise, end operation.

Step 570b, after CCN confirms that the CoMP UE are switched to target BS, path switching is not initiated to core net node Process, continue to carry out the terminal scheduling controlling of cooperative multipoint transmission.

Wherein, the process for being attached foundation to the CoMP UE with it that CCN can be triggered by target BS confirms should CoMP UE are switched to target BS.Specifically, in this process, target BS is by the identification information of target BS（Optionally, The identification information of access cell after also switching）Notified with handoff procedure for UE identification information of CoMP UE distribution etc. To CCN, CCN notifies the final UE configured for CoMP UE identification information to target BS；Or target BS is by target base The identification information stood（Optionally, the identification information of the access cell after also switching）Distributed with handoff procedure for CoMP UE UE identification information etc. notify that to CCN CCN no longer redistributes UE identification information, but use what target BS notified UE is identified and different UEs of the mark identification from different base station of base station.Then, target BS notice CCN handoff completion messages, Included in the message：Instruction, UE marks and Base Station Identification are completed in switching.CCN is according to the message received, it is determined that corresponding CoMP UE is switched to target BS, can start data transfer and scheduling controlling, without triggering path handover request（path switch request）Process.

CCN can also confirm that the CoMP UE are switched to by the path swithcrequest processes that target BS is initiated Target BS.Specifically, target BS notifies CCN route diversions by path switch request processes, CCN is according to this Notice, confirms that the CoMP UE are switched to target BS.And according to the target BS determined before under this CCN, therefore determine nothing Path switch request processes need to be initiated to MME, target BS path Handover Request Acknowledge is notified by CCN（path switch request ack）.

In addition, if some carrying target BS can not be received, E-RAB RELEASE INDICATION can be subsequently used Process notice MME amendment carryings.

In the embodiment of the present invention, it can be following that above-mentioned target BS, which notifies that each CCN so-called Base Station Identification and UE identifies, It is several：Target BS mark, the identification CoMP UE distributed between CCN and target BS UE is identified and IMSI；Or target The UE distributed between Base Station Identification, CCN and target BS is identified, serving BS identifies, the UE marks under cell-of-origin（Old eNB UE X2AP ID）；Or target BS mark, the identification CoMP UE distributed between CCN and target BS UE marks, take Be engaged in Base Station Identification, CCN and serving BS distribution the identification CoMP UE UE marks.Serving BS can disappear in handover request By CCN and the identification of serving BS distribution the CoMP UE UE marks or IMSI or Old eNB UE X2AP ID notices in breath To target BS.

If CCN judges that the CCN of cooperation set where the target BS is not this CCN, can also notify serving BS to Target BS sends handoff notification message, so that the handoff notification message is sent to where it set that cooperates by target BS CCN, the CCN in cooperation set where the target BS carry out cooperative multipoint transmission control.Concrete operations can refer to step 550b ~step 570b.It is of course also possible to whether judge target BS before handoff notification message is sent to CCN from serving BS Belong to same CCN with this base station, if it is, sending handoff notification message to CCN, otherwise, it is logical to send switching to target BS Know message.

It should be pointed out that if target BS and serving BS be not under same CCN.Target BS passes through path Switch request processes notice core network data transmission path is changed to SGW<—>CCN<—>Target BS.

Based on the inventive concept same with method, the embodiments of the invention provide a kind of base station, as shown in fig. 6, the base station Including：

Cell switch determining module 601, for determining to carry out cell switching to terminal；

Messaging interface 602, for determining that carrying out cell to the terminal cuts in the cell switch determining module 601 After changing, handover request message is sent to target BS；After receiving the handover request ack message that the target BS is sent, to institute State terminal and send switching command, to indicate that the terminal switches to the cell of the target BS, the terminal is to perform cooperation The terminal of multicast communication；

Cooperative multipoint transmission control module 603, for determining to enter the terminal in the cell switch determining module 601 After the switching of row cell, judge whether the target BS supports the cooperative multipoint transmission to the terminal；If the target base Stand and support to the cooperative multipoint transmission of the terminal, other in the cooperation set to the cooperative multipoint transmission for participating in the terminal Access network node sends handoff notification message, and the identification information of the terminal, the target are carried in the handoff notification message The identification information and cooperative multipoint transmission of base station maintain configured information；If the target BS does not support the association to the terminal Make multicast communication, deactivate the cooperative multipoint transmission to the terminal, and the association of the cooperative multipoint transmission to the participation terminal Make other access network nodes in gathering and send the message that instruction deactivates cooperative multipoint transmission, the instruction deactivates multiple spot and passed The identification information of the terminal is carried in defeated message and deactivates the configured information of cooperative multipoint transmission.

It is preferred that when judging whether the target BS supports the cooperative multipoint transmission to the terminal, the cooperation is more Point transmission control module 603 is specifically used for：

Based on above-mentioned preferred embodiment, determine to carry out cell switching to the terminal in the cell switch determining module Afterwards, the cooperative multipoint transmission control module judge the target BS whether support to the cooperative multipoint transmission of the terminal it Before, the cooperative multipoint transmission control module 603 can be also used for：

Based on above-mentioned any base station embodiment, if it is preferred that participating in the collaboration set of the cooperative multipoint transmission of the terminal Conjunction includes center cooperation point, and the cooperative multipoint transmission control module 603 is to the cooperative multipoint transmission for participating in the terminal When other access network nodes in cooperation set send the message of instruction deactivation cooperative multipoint transmission, it is specifically used for：

After the message that instruction deactivates cooperative multipoint transmission is sent to the center cooperation point, the cooperative multipoint transmission control Molding block is additionally operable to：The identification information for the terminal that the center cooperation point is sent, do not receive not to the terminal transmission or The end position information of the data of the correct confirmation of the terminal, the start position information of the data and the data；Association Preserve the stop bits confidence of the identification information of the terminal, the data, the start position information of the data and the data Breath.

On this basis, if it is preferred that also including institute in participating in the cooperation set of the cooperative multipoint transmission of the terminal State other cooperative base stations outside base station, coordinate multipoint of the cooperative multipoint transmission control module 703 to the participation terminal When other access network nodes in the cooperation set of transmission send the message of instruction deactivation cooperative multipoint transmission, it is additionally operable to：

Based on above-mentioned any base station embodiment, if it is preferred that participating in the collaboration set of the cooperative multipoint transmission of the terminal Conjunction includes other cooperative base stations outside the base station, but does not include center cooperation point, and the cooperative multipoint transmission controls mould Other access network nodes in cooperation set of from the block 603 to the cooperative multipoint transmission for participating in the terminal send instruction and deactivate association When making the message of multicast communication, it is specifically used for：

It is described after other cooperative base stations into the cooperation set send the message that instruction deactivates cooperative multipoint transmission Cooperative multipoint transmission control module is additionally operable to：Receive the terminal that other described cooperative base stations are sent identification information, not to The terminal transmission or the data of correct confirmation, the start position information of the data and the data for not receiving the terminal End position information；Association preserves identification information, the data, the start position information of the data and the institute of the terminal State the end position information of data.

Based on the inventive concept same with method, the embodiments of the invention provide a kind of access network node, the access network Node is the access network node outside terminal service base station described in the cooperation set of the cooperative multipoint transmission of participation terminal, is such as schemed Shown in 7, the access network node includes：

Cooperative multipoint transmission indicates receiving module 701, described for receiving the message for indicating to deactivate cooperative multipoint transmission Indicate to carry the identification information of the terminal in the message of deactivation multicast communication and deactivate the instruction letter of cooperative multipoint transmission Breath；Or for receiving handoff notification message, the identification information of the terminal, the target are carried in the handoff notification message The identification information and cooperative multipoint transmission of base station maintain configured information；

Cooperative multipoint transmission deactivates flexible module 702, when cooperative multipoint transmission instruction receiving module 701 receives instruction When deactivating the message of cooperative multipoint transmission, the cooperative multipoint transmission deactivates flexible module and is used to be believed according to the mark of the terminal Breath determines the terminal, and the instruction of the configured information according to the deactivation cooperative multipoint transmission, deactivates the terminal Cooperative multipoint transmission；

Cooperative multipoint transmission maintenance module 703, lead to when cooperative multipoint transmission instruction receiving module 701 receives switching When knowing message, the cooperative multipoint transmission maintenance module is used to determine the terminal according to the identification information of the terminal, according to The identification information of the target BS determines the target BS, and maintains configured information according to the cooperative multipoint transmission, really The fixed terminal continues cooperative multipoint transmission after switching to the target BS.

Based on above-mentioned any access network node embodiment, it is preferred that the cooperative multipoint transmission maintenance module 703 determines institute State after terminal switches to after the target BS and continue cooperative multipoint transmission, be additionally operable to：

Based on above-mentioned any access network node embodiment, if it is preferred that the access network node is center cooperation point, also Including the first data transmission blocks；

If the access network node is other cooperative base stations outside serving BS, in addition to the second data send mould Block；

It is described after the cooperative multipoint transmission instruction receiving module is sent to the message that instruction deactivates cooperative multipoint transmission Second data transmission blocks are used for the identification information of the terminal and do not receive to the terminal transmission or the terminal The data of correct confirmation be sent to the serving BS of the terminal；Or the cooperative multipoint transmission instruction receiving module hair After being sent to the message that instruction deactivates cooperative multipoint transmission, second data transmission blocks are used to believe the mark of the terminal Breath, not the data to the terminal transmission or the correct confirmation for not receiving the terminal, the data start position information and The end position information of the data is sent to the serving BS of the terminal.

It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program production of upper implementation The form of product.

The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.

These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent Select embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims

1. the cooperative multipoint transmission control method in a kind of cell switch process, the cell switch process include：Serving BS After it is determined that carrying out cell switching to terminal, handover request message is sent to target BS, and receiving the target BS After the handover request ack message of transmission, switching command is sent to the terminal, to indicate that the terminal switches to the target The cell of base station, the terminal are to perform the terminal of cooperative multipoint transmission；Characterized in that, the cooperative multipoint transmission controlling party Method includes：

The serving BS judges whether the target BS is supported to described after it is determined that carrying out cell switching to the terminal The cooperative multipoint transmission of terminal；

If the target BS supports the cooperative multipoint transmission to the terminal, the serving BS is to participating in the terminal Other access network nodes in the cooperation set of cooperative multipoint transmission send handoff notification message, are taken in the handoff notification message Identification information with the terminal, the identification information of the target BS and cooperative multipoint transmission maintain configured information；

If the target BS does not support the cooperative multipoint transmission to the terminal, the serving BS was deactivated to the end The cooperative multipoint transmission at end, and other access network nodes in the cooperation set to the cooperative multipoint transmission for participating in the terminal are sent out Instruction is sent to deactivate the message of cooperative multipoint transmission, the instruction deactivates the mark for carrying the terminal in the message of multicast communication Know information and deactivate the configured information of cooperative multipoint transmission.

2. according to the method for claim 1, it is characterised in that：

Whether the serving BS is supported to the end according to the target BS carried in the handover request ack message The configured information of the cooperative multipoint transmission at end, judges whether the target BS supports the cooperative multipoint transmission to the terminal； Or

Whether the instruction of cooperative multipoint transmission to the terminal is supported in each base station that the serving BS is sent in advance according to OAM Information, judges whether the target BS supports the cooperative multipoint transmission to the terminal；Or

The serving BS is according to the instruction whether supported to the cooperative multipoint transmission of the terminal of interaction is believed in advance between base station Breath, judges whether the target BS supports the cooperative multipoint transmission to the terminal；Or

Whether support to described each base station that center cooperation point of the serving BS in the cooperation set is sent in advance The configured information of the cooperative multipoint transmission of terminal, judges whether the target BS supports the coordinate multipoint biography to the terminal It is defeated.

3. according to the method for claim 2, it is characterised in that described to judge whether the target BS was supported to the end The cooperative multipoint transmission at end, including：

If whether the target BS is supported to indicate the target base to the configured information of the cooperative multipoint transmission of the terminal Stand and do not support cooperative multipoint transmission, the serving BS judges that the target BS does not support the coordinate multipoint biography to the terminal It is defeated；

If whether the target BS is supported to indicate the target base to the configured information of the cooperative multipoint transmission of the terminal Stand the cooperative multipoint transmission of not Support center scheduling method, but scheduling method centered on the cooperative multipoint transmission of the terminal, institute State serving BS and judge that the target BS does not support the cooperative multipoint transmission to the terminal；

If whether the target BS is supported to indicate the target base to the configured information of the cooperative multipoint transmission of the terminal Stand the cooperative multipoint transmission of Support center scheduling method, and scheduling method centered on the cooperative multipoint transmission of the terminal, it is described Serving BS judges that the target BS supports the cooperative multipoint transmission to the terminal；If whether the target BS is supported The coordinate multipoint of the target BS Support center scheduling method is indicated to the configured information of the cooperative multipoint transmission of the terminal Whether transmission, the target BS are supported also to indicate the target BS to the configured information of the cooperative multipoint transmission of the terminal The identification information of the center cooperation point of place cooperation set.

4. according to the method for claim 3, it is characterised in that if whether the target BS is supported to the terminal The configured information of cooperative multipoint transmission indicates the cooperative multipoint transmission of the target BS Support center scheduling method and the mesh The identification information of the center cooperation point of cooperation set where marking base station, and dispatch mould centered on the cooperative multipoint transmission of the terminal Formula, other access network nodes in cooperation set of the serving BS to the cooperative multipoint transmission for participating in the terminal, which are sent, to be cut Notification message is changed, including：

Center cooperation point in cooperation set of from the serving BS to the cooperative multipoint transmission for participating in the terminal sends switching Notification message, the mark letter of the center cooperation point of cooperation set where the target BS is also carried in the handoff notification message Breath.

5. according to the method for claim 4, it is characterised in that coordinate multipoint of the serving BS to the participation terminal Before center cooperation point in the cooperation set of transmission sends handoff notification message, this method also includes：

The identification information of serving BS center cooperation point of cooperation set according to where the target BS, judges the mesh Whether mark base station belongs to same center cooperation point with the serving BS；

If be not belonging to, the serving BS sends the handoff notification message to the target BS, so as to the target base Stand and the handoff notification message is sent to where the target BS center cooperation point in gathering that cooperates；

Center cooperation point in cooperation set of from the serving BS to the cooperative multipoint transmission for participating in the terminal sends switching Notification message, including：

If the target BS and the serving BS belong to same center cooperation point, the serving BS is to participating in the end Center cooperation point in the cooperation set of the cooperative multipoint transmission at end sends handoff notification message.

6. according to the method for claim 2, it is characterised in that the serving BS to the terminal it is determined that carry out cell After switching, before judging whether the target BS supports the cooperative multipoint transmission to the terminal, this method also includes：

If the serving BS determines that the cell switches to S1 to switch, the cooperative multipoint transmission to the terminal is deactivated, And other access network nodes in the cooperation set to the cooperative multipoint transmission for participating in the terminal send instruction and deactivate cooperation The message of multicast communication, the instruction deactivate the identification information that the terminal is carried in the message of multicast communication and deactivated and assist Make the configured information of multicast communication.

7. according to the method described in any one of claim 1~6, it is characterised in that if participating in the coordinate multipoint of the terminal The cooperation set of transmission includes center cooperation point, in the cooperation set to the cooperative multipoint transmission for participating in the terminal Other access network nodes send the message that instruction deactivates cooperative multipoint transmission, including：

After the message that instruction deactivates cooperative multipoint transmission is sent to the center cooperation point, this method also includes：

The serving BS receives the identification information for the terminal that the center cooperation point is sent, not to the terminal transmission or The stop bits confidence of the data of the correct confirmation of the terminal, the start position information of the data and the data is not received Breath；

Serving BS association preserve the identification information of the terminal, the data, the data start position information and The end position information of the data.

8. according to the method for claim 7, it is characterised in that if participating in the cooperation of the cooperative multipoint transmission of the terminal Also include other cooperative base stations outside the serving BS in set, the cooperative multipoint transmission to the participation terminal Other access network nodes in cooperation set send the message that instruction deactivates cooperative multipoint transmission, in addition to：

9. according to the method described in any one of claim 1~6, it is characterised in that if participating in the coordinate multipoint of the terminal The cooperation set of transmission includes other cooperative base stations outside the serving BS, but does not include center cooperation point, it is described to Participate in other access network nodes in the cooperation set of the cooperative multipoint transmission of the terminal and send instruction deactivation coordinate multipoint The message of transmission, including：

After other cooperative base stations into the cooperation set send the message that instruction deactivates cooperative multipoint transmission, this method is also Including：

The serving BS receives the identification information for the terminal that other described cooperative base stations are sent, not to the terminal transmission Or the stop bits confidence of the data of the correct confirmation of the terminal, the start position information of the data and the data is not received Breath；

A kind of 10. cooperative multipoint transmission control method in cell switch process, it is characterised in that including：

Access network node described in the cooperation set of the cooperative multipoint transmission of participation terminal outside terminal service base station, which receives, to be referred to Show the message for deactivating cooperative multipoint transmission, the instruction deactivates the mark letter that the terminal is carried in the message of multicast communication Breath and the configured information for deactivating cooperative multipoint transmission；The access network node is according to determining the identification information of the terminal Terminal, and the instruction of the configured information according to the deactivation cooperative multipoint transmission, the coordinate multipoint for deactivating the terminal pass It is defeated；Or

The access network node receives handoff notification message, carried in the handoff notification message terminal identification information, The identification information and cooperative multipoint transmission of target BS maintain configured information；The access network node is according to the mark of the terminal Information determines the terminal, and the target BS is determined according to the identification information of the target BS, and more according to the cooperation Point transmission maintains configured information, determines that the terminal continues cooperative multipoint transmission after switching to the target BS.

11. according to the method for claim 10, it is characterised in that if the access network node is center cooperation point, institute State the identification information of the center cooperation point of cooperation set where the target BS is also carried in handoff notification message.

12. the method according to claim 10 or 11, it is characterised in that if the access network node is center cooperation Point, after determining that the terminal switches to after the target BS and continues cooperative multipoint transmission, this method also includes：

The identification information of the center cooperation point of cooperation set according to where the target BS, judge to assist where the target BS Make the center cooperation point gathered whether this center cooperation point；

If the center cooperation point of cooperation set is this center cooperation point where the target BS, confirm that the terminal is switched to After the target BS, path handoff procedure is not initiated to core net node, continue to carry out cooperative multipoint transmission to the terminal Scheduling controlling.

13. according to the method for claim 10, it is characterised in that if the access network node is center cooperation point, institute After the message of instruction deactivation cooperative multipoint transmission for stating the serving BS transmission of access network node receiving terminal, this method is also wrapped Include：

The center cooperation point is by the identification information of the terminal, not to the terminal transmission or does not receive the correct of the terminal The end position information of the data of confirmation, the start position information of the data and the data is sent to the service of the terminal Base station；

If the access network node is other cooperative base stations outside serving BS, the clothes of the access network node receiving terminal It is engaged in after the message for indicating to deactivate cooperative multipoint transmission that base station is sent, this method also includes：

Other described cooperative base stations do not receive to the terminal transmission or the terminal by the identification information of the terminal and The data correctly confirmed are sent to the serving BS of the terminal；Or other described cooperative base stations are by the mark of the terminal The start position information of information, the not data to the terminal transmission or the correct confirmation for not receiving the terminal, the data The serving BS of the terminal is sent to the end position information of the data.

14. according to the method for claim 13, it is characterised in that if the access network node is center cooperation point, institute After the message of instruction deactivation cooperative multipoint transmission for stating the serving BS transmission of center cooperation point receiving terminal, this method is also wrapped Include：

Other cooperations in cooperation set of the center cooperation point to the cooperative multipoint transmission of participation terminal outside serving BS Base station sends the message that instruction deactivates cooperative multipoint transmission, and the instruction for being sent to other cooperative base stations deactivates association Make the identification information that the terminal is carried in the message of multicast communication and the configured information for deactivating cooperative multipoint transmission.

15. a kind of base station, the base station includes：

Messaging interface, after in cell switch determining module determination to terminal progress cell switching, to mesh Mark base station and send handover request message；After receiving the handover request ack message that the target BS is sent, sent out to the terminal Switching command is sent, to indicate that the terminal switches to the cell of the target BS, the terminal is execution cooperative multipoint transmission Terminal；

Characterized in that, the base station also includes：

Cooperative multipoint transmission control module, for determining to carry out cell switching to the terminal in the cell switch determining module Afterwards, judge whether the target BS supports the cooperative multipoint transmission to the terminal；If the target BS is supported to institute The cooperative multipoint transmission of terminal is stated, other access network nodes in cooperation set to the cooperative multipoint transmission for participating in the terminal Handoff notification message is sent, identification information, the mark of the target BS of the terminal are carried in the handoff notification message Information and cooperative multipoint transmission maintain configured information；If the target BS does not support the coordinate multipoint biography to the terminal It is defeated, the cooperative multipoint transmission to the terminal is deactivated, and in the cooperation set to the cooperative multipoint transmission for participating in the terminal Other access network nodes send instruction deactivate cooperative multipoint transmission message, it is described instruction deactivate multicast communication message The middle identification information for carrying the terminal and the configured information for deactivating cooperative multipoint transmission.

16. base station according to claim 15, it is characterised in that judge whether the target BS is supported to the terminal Cooperative multipoint transmission when, the cooperative multipoint transmission control module is specifically used for：

Whether the target BS according to being carried in the handover request ack message supports the coordinate multipoint to the terminal The configured information of transmission, judges whether the target BS supports the cooperative multipoint transmission to the terminal；Or

Whether each base station sent in advance according to OAM supports the configured information of the cooperative multipoint transmission to the terminal, judges institute State whether target BS supports cooperative multipoint transmission to the terminal；Or

According to the configured information for whether supporting the cooperative multipoint transmission to the terminal interactive in advance between base station, the mesh is judged Whether cooperative multipoint transmission to the terminal is supported in mark base station；Or

Whether support that the cooperation to the terminal is more in each base station that center cooperation point in the cooperation set is sent in advance The configured information of point transmission, judges whether the target BS supports the cooperative multipoint transmission to the terminal.

17. base station according to claim 16, it is characterised in that judge whether the target BS is supported to the terminal Cooperative multipoint transmission when, the cooperative multipoint transmission control module is specifically used for：

If whether the target BS is supported to indicate the target base to the configured information of the cooperative multipoint transmission of the terminal Stand and do not support cooperative multipoint transmission, judge that the target BS does not support the cooperative multipoint transmission to the terminal；

If whether the target BS is supported to indicate the target base to the configured information of the cooperative multipoint transmission of the terminal Stand the cooperative multipoint transmission of not Support center scheduling method, but scheduling method centered on the cooperative multipoint transmission of the terminal, sentence The target BS that breaks does not support the cooperative multipoint transmission to the terminal；

If whether the target BS is supported to indicate the target base to the configured information of the cooperative multipoint transmission of the terminal Stand the cooperative multipoint transmission of Support center scheduling method, and scheduling method centered on the cooperative multipoint transmission of the terminal, judge The target BS supports the cooperative multipoint transmission to the terminal；If whether the target BS is supported to the terminal The configured information of cooperative multipoint transmission indicates the cooperative multipoint transmission of the target BS Support center scheduling method, the target Whether to the configured information of the cooperative multipoint transmission of the terminal also indicate the target BS where cooperation set is supported in base station Center cooperation point identification information.

18. base station according to claim 17, it is characterised in that if whether the target BS is supported to the terminal The configured information of cooperative multipoint transmission indicate the cooperative multipoint transmission of the target BS Support center scheduling method and described The identification information of the center cooperation point of cooperation set where target BS, and dispatched centered on the cooperative multipoint transmission of the terminal Pattern, other in cooperation set of the cooperative multipoint transmission control module to the cooperative multipoint transmission for participating in the terminal connect When network access node sends handoff notification message, it is specifically used for：

The center cooperation point in cooperation set to the cooperative multipoint transmission for participating in the terminal sends handoff notification message, described The identification information of the center cooperation point of cooperation set where the target BS is also carried in handoff notification message.

19. base station according to claim 18, it is characterised in that the cooperation to the cooperative multipoint transmission for participating in the terminal When center cooperation point in set sends handoff notification message, the cooperative multipoint transmission control module is specifically used for：

According to the identification information of the center cooperation point of cooperation set where the target BS, judge the target BS with it is described Whether base station belongs to same center cooperation point；

If be not belonging to, the handoff notification message is sent to the target BS, so that the target BS is by the switching Center cooperation point in cooperation set where notification message is sent to the target BS；

If belonged to, the center cooperation point in cooperation set to the cooperative multipoint transmission for participating in the terminal sends switching notice Message.

20. base station according to claim 17, it is characterised in that determined in the cell switch determining module to the end After end carries out cell switching, the cooperative multipoint transmission control module judges whether the target BS is supported to the terminal Before cooperative multipoint transmission, the cooperative multipoint transmission control module is additionally operable to：

If it is determined that the cell switches to S1 to switch, the cooperative multipoint transmission to the terminal is deactivated, and to described in participation Other access network nodes in the cooperation set of the cooperative multipoint transmission of terminal send instruction and deactivate disappearing for cooperative multipoint transmission Breath, the instruction deactivate the identification information that the terminal is carried in the message of multicast communication and deactivate cooperative multipoint transmission Configured information.

21. according to the base station described in any one of claim 16~20, it is characterised in that if the cooperation for participating in the terminal is more The cooperation set of point transmission includes center cooperation point, cooperation of the cooperative multipoint transmission control module to the participation terminal It is specific to use when other access network nodes in the cooperation set of multicast communication send the message of instruction deactivation cooperative multipoint transmission In：

After the message that instruction deactivates cooperative multipoint transmission is sent to the center cooperation point, the cooperative multipoint transmission controls mould Block is additionally operable to：The identification information for the terminal that the center cooperation point is sent, do not receive not to the terminal transmission or described The end position information of the data of the correct confirmation of terminal, the start position information of the data and the data；Association preserves The identification information of the terminal, the data, the end position information of the start position information of the data and the data.

22. base station according to claim 21, it is characterised in that if participating in the association of the cooperative multipoint transmission of the terminal Make also to include other cooperative base stations outside the base station in gathering, the cooperative multipoint transmission control module is to participating in end Other access network nodes in the cooperation set of the cooperative multipoint transmission at end send the message that instruction deactivates cooperative multipoint transmission When, it is additionally operable to：

23. according to the base station described in any one of claim 16~20, it is characterised in that if the cooperation for participating in the terminal is more The cooperation set of point transmission includes other cooperative base stations outside the base station, but does not include center cooperation point, the cooperation Other access network nodes in cooperation set of from the multicast communication to the cooperative multipoint transmission for participating in the terminal send instruction and deactivated During the message of cooperative multipoint transmission living, it is specifically used for：

After other cooperative base stations into the cooperation set send the message that instruction deactivates cooperative multipoint transmission, the cooperation Multicast communication control module is additionally operable to：Receive the identification information for the terminal that other described cooperative base stations are sent, not to described Terminal transmission or the knot for not receiving the data of correct confirmation of the terminal, the start position information of the data and the data Beam position information；Association preserves identification information, the data, the start position information of the data and the number of the terminal According to end position information.

24. a kind of access network node, it is characterised in that the access network node is the cooperation of the cooperative multipoint transmission of participation terminal Access network node outside terminal service base station described in set, the access network node include：

Cooperative multipoint transmission indicates receiving module, and for receiving the message for indicating to deactivate cooperative multipoint transmission, the instruction is gone Activate the identification information that the terminal is carried in the message of multicast communication and the configured information for deactivating cooperative multipoint transmission；Or For receiving handoff notification message, identification information, the mark of target BS of the terminal are carried in the handoff notification message Information and cooperative multipoint transmission maintain configured information；

Cooperative multipoint transmission deactivates flexible module, and cooperation is deactivated when cooperative multipoint transmission instruction receiving module receives instruction During the message of multicast communication, the cooperative multipoint transmission deactivates flexible module and is used for according to determining the identification information of the terminal Terminal, and the instruction of the configured information according to the deactivation cooperative multipoint transmission, the coordinate multipoint for deactivating the terminal pass It is defeated；

Cooperative multipoint transmission maintenance module, when cooperative multipoint transmission instruction receiving module receives handoff notification message, The cooperative multipoint transmission maintenance module is used to determine the terminal according to the identification information of the terminal, according to the target base The identification information stood determines the target BS, and maintains configured information according to the cooperative multipoint transmission, determines the terminal Continue cooperative multipoint transmission after switching to the target BS.

25. access network node according to claim 24, it is characterised in that if the access network node is center cooperation Point, the identification information of the center cooperation point of cooperation set where the target BS is also carried in the handoff notification message.

26. the access network node according to claim 24 or 25, it is characterised in that if the access network node is center Cooperation point, the cooperative multipoint transmission maintenance module determine that the terminal switches to after the target BS that to continue cooperation more After point transmission, it is additionally operable to：

27. access network node according to claim 24, it is characterised in that if the access network node is center cooperation Point, in addition to the first data transmission blocks；

The instruction that the serving BS of the cooperative multipoint transmission instruction receiving module receiving terminal is sent deactivates coordinate multipoint and passed After defeated message, first data transmission blocks are used for by the identification information of the terminal, not to the terminal transmission or not Receive the end position information of the data of the correct confirmation of the terminal, the start position information of the data and the data It is sent to the serving BS of the terminal；

If the access network node is other cooperative base stations outside serving BS, in addition to the second data transmission blocks；

After the cooperative multipoint transmission instruction receiving module is sent to the message that instruction deactivates cooperative multipoint transmission, described second Data transmission blocks are used for the identification information of the terminal and do not receive to the terminal transmission or the terminal just The data confirmed are sent to the serving BS of the terminal；Or the cooperative multipoint transmission instruction receiving module is sent to Indicate deactivate cooperative multipoint transmission message after, second data transmission blocks be used for by the identification information of the terminal, Not to the terminal transmission or the data for the correct confirmation for not receiving the terminal, the start position information of the data and described The end position information of data is sent to the serving BS of the terminal.

28. access network node according to claim 27, it is characterised in that if the access network node is center cooperation Point, in addition to cooperative multipoint transmission instruction sending module；

The instruction that the serving BS of the cooperative multipoint transmission instruction receiving module receiving terminal is sent deactivates coordinate multipoint and passed After defeated message, the cooperative multipoint transmission instruction sending module is used for the cooperation set of the cooperative multipoint transmission to participation terminal Other cooperative base stations outside middle serving BS send the message that instruction deactivates cooperative multipoint transmission, are sent to other described associations The instruction for making base station deactivates the identification information that the terminal is carried in the message of cooperative multipoint transmission and deactivates cooperation The configured information of multicast communication.