CN104284437B

CN104284437B - A kind of data transmission method and apparatus and system of cooperative multipoint transmission central dispatching

Info

Publication number: CN104284437B
Application number: CN201310286727.6A
Authority: CN
Inventors: 付喆; 胡海静
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-07-09
Filing date: 2013-07-09
Publication date: 2018-03-27
Anticipated expiration: 2033-07-09
Also published as: WO2015003614A1; CN104284437A

Abstract

The present invention provides a kind of data transmission method and apparatus and system of cooperative multipoint transmission central dispatching, wherein, CoMP UE user face data to be transmitted is obtained from SGW, all UE CSI and non-CoMP UE user face data amount to be transmitted are obtained from all cooperation transmission points, communicated with the cooperation transmission point of CCN scheduling, perform the scheduled transmission of CoMP UE user face data；With the cooperation transmission point of the same set that cooperates of CCN, the user face data amount to be transmitted of all UE CSI and non-CoMP UE under the cooperation transmission point are reported to CCN, by being communicated with CCN, CoMP UE user face data scheduled transmission is performed using CoMP resources, non-CoMP UE user face data scheduled transmission is performed using non-CoMP resources.The present invention can solve under non-ideal backhaul scene by CCN user data transmission process problem during as scheduling controlling node.

Description

A kind of data transmission method and apparatus and system of cooperative multipoint transmission central dispatching

Technical field

The present invention relates to wireless communication technology field, more particularly to a kind of data transfer of cooperative multipoint transmission central dispatching Method and apparatus and system.

Background technology

CoMP (Coordinated Multiple Points Transmission/Reception, cooperative multipoint transmission) Refer to the multiple TP (transmission point, transfer point) separated on geographical position, collaboration is participated in towards terminal Data transfer (PDSCH (Physical Downlink Shared Channel, physical down link sharing channel) transmission) or Person, which combines, receives data (PUSCH (Physical Uplink Shared Channel, physical uplink chain that a terminal is sent Road shared channel) transmission).

In general, multiple transmission point can be more in the base station or same control cell of different districts Individual RRH (remote radio head, far end radio frequency).Passed by the cooperative scheduling between multiple transmission point, precoding, joint It is defeated etc., the interference between cooperation transmission point can be effectively reduced, improves user, particularly cooperation point in the coverage of collaboration region Cover the handling capacity of edge customer.

Cooperative multipoint transmission technology can be divided into down collaboration multi-point and up joint receives.

Down collaboration multi-point is mainly divided into two kinds of transmission plans again：Cooperative scheduling/cooperative beam figuration (coordinated scheduling/coordinated beamforming, CS/CB) and Combined Treatment (joint Processing, JP) scheme.

A transfer point in CS/CB transmission in multiple transmission point sends useful signal, other transfer points to user terminal By combined dispatching and wave beam forming, reduce the interference to the user terminal as far as possible.

Combined Treatment scheme can be divided into joint transmission (joint transmission, JT) and dynamic transmission point selection (dynamic point selection, DPS).Multiple transmission point sends useful letter to same user terminal simultaneously in JT transmission Number, so as to enhance the reception signal of user terminal.DPS transmits the transfer point of switching at runtime user terminal, is always passed from cooperation The point transmission signal optimal to the user terminal is selected in defeated point.

These cooperative multipoint transmission schemes can be combined with each other.It can be combined with dynamic transmission point silence (dynamic Blanking, DB) scheme, dynamically set some transfer points not send signal on some running time-frequency resources.

Up CoMP versus downstreams CoMP is relatively simple, and uplink coordinated mode mainly includes joint and received and cooperative scheduling two Kind.When joint receives, the signal for the same UE that multiple receiving points receive obtains output signal by Combined Treatment.Cooperation is adjusted When spending, base station side considers multiple receiving point situation scheduling UE in collaboration region, to minimize interference.

Carry out that during coordinate multipoint scheduled transmission two ways can be used between intra-cell transmission node：1) non-central cooperation is adjusted Degree；2) center cooperative scheduling.

The non-central no Centroid of scheduling carries out global optimization scheduling, can in order to reach the result close to global optimization The method using iteration scheduling between base station can be needed, may need to carry out multiple schedule information interaction between cooperative base station, such as Fig. 1 institutes Show.If backhaul time delays are larger between base station, non-central scheduling, which carries out multiple schedule information interaction, can make scheduling delay excessive, Cause channel information out-of-date, so as to influence transmission performance.

Then it is the user by each cooperative base station all access base stations being most recently received under the cooperative scheduling scene of center Terminal CSI (Channel State Information, channel condition information) information transfer gives a CCN (central Coordination node, center cooperative node), by the user terminal centralized dispatching time domain and frequency that CCN is all cooperative base stations Domain resource, associated base stations are that user terminal transmits data further according to the CCN resource scheduling informations sent and pre-encoding results, are such as schemed Shown in 2.

In LTE/LTE-A systems, the information exchange between base station is realized by back haul link (backhaul).Real network In there may be a variety of backhaul physical connections modes, the information in CoMP cooperative schedulings between base station, which exchanges, consider ideal Backhaul and nonideal backhaul situation.Usual non-ideal backhaul propagation delay times are likely to be breached 10ms or more Greatly.

Rel-12CoMP technologies are studied using the center cooperative scheduling scheme under non-ideal back haul link as main CoMP One of scene.In the case of non-ideal backhaul, center cooperative scheduling scheme is primarily present following problem：Backhaul time delays Influence to CoMP central dispatchings.

E-UTRAN (Evolved Universal Terrestrial Radio Access Network, evolution it is general Land wireless network) the network architecture as shown in figure 3, E-UTRAN is made up of evolution base station eNB.ENB completes access network function, Pass through idle port communication with UE (User Equipment, user terminal).Not only chain of command connection between UE and eNB be present but also existed and used Family face connects.The UE of network is attached to for each, by a MME (Mobility Management Entity, mobility Management entity) for it service is provided, it is connected between MME and eNB using S1-MME interface.S1-MME interface is used to provide control for UE Face service processed, including mobile management and bearer management function.

S-GW (Service Gateway, gateway) is connected between eNB using S1-U interface, for each attachment To the UE of network, there is a S-GW to provide service for it.S1-U interface is used to provide user plane service, UE user plane number for UE Transmitted according to being carried on by S1-U between S-GW and eNB.

For center cooperative scheduling scene, it is necessary to consider the data transmission architecture of the scene, and consider for transmission architecture Scheduled transmission problem, to help network side timely and accurately to realize scheduling decision and data transmission and processing to CoMP user, subtract Influence of the small backhaul time delays to CoMP central dispatchings, but the solution of correlation is not provided also at present.

The content of the invention

The present invention provides a kind of data transmission method and apparatus and system of cooperative multipoint transmission central dispatching, realizes cooperation The data transmission method of multicast communication center cooperative scheduling, network side is helped timely and accurately to realize that the scheduling to CoMP UE is determined Plan and data transmission and processing, reduce influence of the backhaul time delays to CoMP central dispatchings.

The present invention provides a kind of data transmission system of cooperative multipoint transmission central dispatching, including：

Gateway SGW, communicated with center cooperation point CCN, to CCN cooperative transmission multicast communication user terminal CoMP UE User face data to be transmitted；

CCN, CoMP UE user face data to be transmitted is obtained from SGW, belong to the same institute to cooperate in set from CCN There is the user face data amount to be transmitted that cooperation transmission point obtains all UE channel condition information CSI and non-CoMP UE, according to institute There are UE user face data amount to be transmitted and CSI, communicated with the cooperation transmission point of CCN scheduling, perform CoMP UE user plane number According to scheduled transmission；

With the cooperation transmission point of the same set that cooperates of CCN, to CCN report under the cooperation transmission point all UE CSI and Non- CoMP UE user face data amount to be transmitted, by being communicated with CCN, determine the CoMP moneys that CoMP UE data transfers use Source, CoMP UE user face data scheduled transmission is performed using CoMP resources, perform non-CoMP UE's using non-CoMP resources User face data scheduled transmission.

The present invention provides a kind of data transmission method of cooperative multipoint transmission central dispatching, including：

Center cooperative node CCN obtains cooperative multipoint transmission user terminal CoMP UE use to be transmitted from gateway SGW Family face data；

Channel condition information CSIs of the CCN from all UE of all cooperation transmission points acquisition for belonging to the same set that cooperates with it And non-CoMP UE user face data amount to be transmitted；

CCN communicates with the cooperation transmission point of CCN scheduling, performed according to all UE user face data amount to be transmitted and CSI The scheduled transmission of CoMP UE user face data.

With reference to the first possible embodiment of the above method, CCN communicates with the cooperation transmission point that it is dispatched, and performs The scheduled transmission of CoMP UE user face data, is specifically included：

CCN determines that CoMP UE carry out multipoint cooperative biography according to all UE user face data amount size to be transmitted and CSI When defeated, CoMP UE cooperation transmission point is selected, and generates CoMP UE schedule information and media access control protocol data sheet First MAC PDU；

CCN notifies the schedule information of generation and MAC PDU CoMP UE cooperation transmission point.

With reference to the first possible embodiment of the above method, do not include CoMP UE in CoMP UE cooperation transmission point Serving BS when, schedule information and MAC PDU that CCN will additionally generate notice CoMP UE serving BS.

With reference to the first possible embodiment of the above method, CoMP UE, CoMP for carrying out coordinated multipoint transmission When UE serving BS determines to need the data to retransmit according to CoMP UE NACK NACK feedback informations, according to CCN scheduling Information determines CoMP resources, and is retransmitted using current non-CoMP scheduling of resource CoMP UE data.

With reference to the first possible embodiment of the above method, CoMP UE serving BS utilizes current non-CoMP Scheduling of resource CoMP UE data retransmit, and specifically include：

The serving BS that CoMP UE serving BS dispatches CoMP UE using CCN carries out new data transmission to CoMP UE Outside at the time of, scheduling CoMP UE data retransmit.

CCN does not dispatch CoMP UE's at the time of possible CoMP UE serving BS scheduling CoMP UE data retransmit Serving BS carries out new data transmission to CoMP UE；Or

Before CCN receives ACK feedbacks of the CoMP UE serving BS to retransmitting data, CoMP UE service base is not dispatched Stand and carry out new data transmission to CoMP UE.

With reference to the first possible embodiment of the above method, CoMP UE, CoMP for carrying out coordinated multipoint transmission When UE serving BS determines to need the data to retransmit according to CoMP UE NACK NACK feedback informations, retransmitted to CoMP UE Data；

If CoMP UE serving BS retransmits the synchronization of data, CCN scheduling CoMP UE service base to CoMP UE Stand and carry out new data transmission to CoMP UE, then CoMP UE serving BS receives new data with retransmitting respectively by two HARQ The ACK/NACK feedbacks of data.

With reference to second of possible embodiment of the above method, CCN communicates with the cooperation transmission point that it is dispatched, and performs The scheduled transmission of CoMP UE user face data, is specifically included：

CCN determines that CoMP UE carry out non-multipoint cooperative according to all UE user face data amount size to be transmitted and CSI During transmission, then：

CCN generation CoMP UE schedule information and media access control protocol data unit MAC PDU, by the tune of generation Degree information and MAC PDU are sent to CoMP UE serving BS；Or

CCN generation CoMP UE schedule information, by the CoMP UE of generation schedule information and user face data to be transmitted It is sent to CoMP UE serving BS；Or

User face data to be transmitted and non-cooperating transmission mark are sent to CoMP UE serving BS by CCN.

With reference to second of possible embodiment of the above method, CCN generation CoMP UE schedule information, by generation CoMP UE schedule information and user face data to be transmitted are sent to CoMP UE serving BS, specifically include：

CCN generation CoMP UE schedule information, by the CoMP UE of generation schedule information and part user plane to be transmitted Data are sent to CoMP UE serving BS；

CoMP UE serving BS generates MAC PDU according to CoMP UE schedule information and part data to be transmitted, enters Row CoMP UE unicast；

CoMP UE serving BS will pass the identification notification of data to CCN.

With reference to second of possible embodiment of the above method, CCN transmits user face data to be transmitted and non-cooperating Mark is sent to CoMP UE serving BS, specifically includes：

Non-cooperating transmission mark and part user face data to be transmitted are sent to CoMP UE serving BS by CCN；

CoMP UE serving BS is transmitted according to non-cooperating and identified, and determines CoMP UE schedule information, is believed according to scheduling Breath and part data to be transmitted generation MAC PDU, carry out CoMP UE unicast；

CoMP UE serving BS will pass the identification notification of data to CCN.

With reference to the third possible embodiment of the above method, CCN is based on the SGW-CCN-CoMP UE clothes pre-established Business base station-CoMP UE user plane downstream data paths, CoMP UE user face data to be transmitted is obtained from SGW.

In the third possible embodiment with reference to the above method, the SGW-CCN-CoMP UE pre-established service Base station-CoMP UE user plane downstream data paths, are specifically included：

During CoMP UE initial radio resource control RRC connections are established, SGW-CCN- is established for CoMP UE CoMP UE serving BS-CoMP UE user plane downstream data paths；Or

After CoMP UE establish RRC connections, passage path change mode is that CoMP UE establish SGW-CCN-CoMP UE's Serving BS-CoMP UE user plane downstream data paths.

In the third possible embodiment with reference to the above method, process is established in CoMP UE Initial R RC connections In, SGW-CCN-CoMP UE serving BS-CoMP UE user plane downstream data paths are established for CoMP UE, it is specific to wrap Include：

CoMP UE serving BS receives CoMP UE Attach Request message；

CoMP UE serving BS is defined as the use that CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE During the downstream data paths of family face, instruction core net establishes the S1-U connections of SGW-CCN-CoMP UE serving BS.

In the third possible embodiment with reference to the above method, CoMP UE serving BS instruction core net is established The S1-U connections of SGW-CCN-CoMP UE serving BS, are specifically included：

CoMP UE serving BS is gathered according to the cooperation of the serving BS comprising CoMP UE of storage and CCN mapping Relation, by the interface between CCN, the relevant information of Attach Request message and CoMP UE is sent to CCN；

The relevant information of Attach Request message and CoMP UE relevant information and CCN is transferred to mobile management reality by CCN Body MME, it is established that the S1-MME connections of MME-CCN-CoMP UE serving BS；

The S1-U connections of SGW-CCN-CoMP UE serving BS are established in MME triggerings.

CoMP UE serving BS sends the message for including EUTRAN cellular global identities ECGI corresponding to CCN to MME, User plane connection is switched between SGW and CCN by notice MME；

MME establishes the S1-U connections of SGW-CCN-CoMP UE serving BS according to notification triggers.

In the third possible embodiment with reference to the above method, in addition to：

MME notice CCN CoMP UE cooperative multipoint transmission function activation.

CoMP UE serving BS receives CoMP UE Attach Request message；

The relevant information of the Attach Request message of reception and CoMP UE is sent to mobility by CoMP UE serving BS Management entity MME；

MME is defined as the user plane downlink data that CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE During path, according to the cooperation set of the serving BS comprising CoMP UE of storage and CCN mapping relations, by corresponding to CCN ECGI corresponding to EUTRAN cellular global identity ECGI, substitution CoMP UE serving BS is simultaneously notified to SGW.

The service base that MME notice CoMP UE serving BS user plane downstream data paths are SGW-CCN-CoMP UE Stand；

MME notice CCN CoMP UE cooperative multipoint transmission function activation, user plane downstream data paths are SGW- CCN-CoMP UE serving BS.

MME sends chain of command path change instruction message to CoMP UE serving BS/CCN, and notice chain of command path is more It is changed to MME-CCN-CoMP UE serving BS.

In the third possible embodiment with reference to the above method, after CoMP UE establish RRC connections, passage path Change mode is the user plane downstream data paths for the serving BS-CoMP UE that CoMP UE establish SGW-CCN-CoMP UE, is had Body includes：

After CoMP UE establish RRC connections, CoMP UE serving BS determines that triggering CoMP UE carry out coordinate multipoint biography When defeated, passage path handoff procedure notice MME carries out user plane downstream data paths switching；

MME is according to notice, the serving BS that change user plane downstream data paths are SGW-CCN-CoMP UE.

CoMP UE serving BS identifies CoMP UE and cooperative multipoint transmission request is sent to CCN；

CoMP UE serving BS receives the cooperative multipoint transmission response of CCN feedbacks.

In the third possible embodiment with reference to the above method, CoMP UE serving BS determines triggering CoMP UE Cooperative multipoint transmission is carried out, is specifically included：

CoMP UE serving BS is reported according to CoMP UE measurement, it is determined whether triggering CoMP UE are cooperated more Point transmission；Or

CoMP UE serving BS is according to CoMP UE positional information, it is determined whether triggering CoMP UE are cooperated more Point transmission；Or

CoMP UE serving BS receives the triggering CoMP UE sent during CCN activation and carries out cooperative multipoint transmission notice When, it is determined that triggering CoMP UE carry out cooperative multipoint transmission.

In the third possible embodiment with reference to the above method, sent when CCN is activated to CoMP UE serving BS Trigger the notice that CoMP UE carry out cooperative multipoint transmission；Or

CSI that CCN reports according to each cooperation transmission point, CoMP UE positional informations, it is determined that triggering CoMP UE are cooperated Multicast communication, and during CCN activation, CCN sends triggering CoMP UE to CoMP UE serving BS and carries out cooperative multipoint transmission Notice.

In the third possible embodiment with reference to the above method, CoMP UE serving BS or CCN determine no longer to adjust When spending CoMP UE cooperative multipoint transmission, interaction deactivates CoMP UE cooperative multipoint transmission function, and passage path changes Mode is the user plane downstream data paths for the serving BS-CoMP UE that CoMP UE establish SGW-CoMP UE.

In the third possible embodiment with reference to the above method, after CoMP UE establish RRC connections, passage path Change mode is the user plane downstream data paths for the serving BS-CoMP UE that CoMP UE establish SGW-CCN-CoMP UE, is wrapped Include：

After CoMP UE establish RRC connections, in cell switched, CoMP UE destination service base station passage path is cut Change process notice MME and carry out user plane downstream data paths switching；

In the third possible embodiment with reference to the above method, CoMP UE serving BS and CCN are not integrated in together During one node, further comprise：

RRC between COMP UE is connected by CoMP UE serving BS triggering, is switched between COMP UE and CCN RRC connections.

With reference to the 4th kind of possible embodiment of the above method, CCN is CoMP UE serving BS, is pre-established SGW-CCN-CoMP UE serving BS-CoMP UE user plane downstream data paths, are specifically included：

CoMP UE former serving BS triggering CoMP UE carry out initiating handoff procedure during cooperative multipoint transmission, by CoMP UE serving BS switches to CCN.

In the 4th kind of possible embodiment with reference to the above method, CoMP UE former serving BS is according to CoMP UE's Measurement reports, it is determined whether triggering CoMP UE carry out cooperative multipoint transmission；Or

CoMP UE former serving BS is according to CoMP UE positional information, it is determined whether triggering CoMP UE are cooperated Multicast communication；Or

CoMP UE former serving BS receives the triggering CoMP UE sent during CCN activation and carries out cooperative multipoint transmission notice When, it is determined that triggering CoMP UE carry out cooperative multipoint transmission.

In the 4th kind of possible embodiment with reference to the above method, sent when CCN is activated to CoMP UE serving BS Trigger the notice that CoMP UE carry out cooperative multipoint transmission；Or

The present invention also provides a kind of data transmission method of cooperative multipoint transmission central dispatching, including：

Cooperation transmission point reports the channel condition information CSI of all UE under the CCN and non-cooperating multicast communication to use to CCN Family terminal CoMP UE user face data amount to be transmitted；

Cooperation transmission point is determined the CoMP resources that CoMP UE data transfers use, provided using CoMP by being communicated with CCN Source performs CoMP UE user face data scheduled transmission, and the user face data that non-CoMP UE are performed using non-CoMP resources is dispatched Transmission.

With reference to the first possible embodiment of the above method, cooperation transmission point performs CoMP UE using CoMP resources User face data scheduled transmission, specifically include：

Receive CCN and determine that CoMP UE carry out the CoMP UE of transmission schedule information and media access during coordinated multipoint transmission Control protocol data cell MAC PDU；

The CoMP resources that CoMP UE data transfers use are determined according to schedule information, passed on PDSCH using CoMP resources Defeated MAC PDU.

In the first possible embodiment with reference to the above method, CCN scheduling CoMP UE carry out cooperative multipoint transmission, The cooperation transmission point is CoMP UE serving BS, in addition to：

When CoMP UE serving BS determines to need the data to retransmit according to CoMP UE NACK NACK feedback informations, And retransmitted using current non-CoMP scheduling of resource CoMP UE data.

In the first possible embodiment with reference to the above method, CoMP UE serving BS utilizes currently non- CoMP scheduling of resource CoMP UE data retransmit, and specifically include：

In the first possible embodiment with reference to the above method, in addition to：

If CoMP UE serving BS retransmits the synchronization of data to CoMP UE, CCN scheduling CoMP UE clothes are determined Base station of being engaged in carries out new data transmission to CoMP UE, CoMP UE serving BS by two HARQ receive respectively new data with again Pass the ACK/NACK feedbacks of data.

With reference to second of possible embodiment of the above method, CCN scheduling CoMP UE carry out non-cooperating multicast communication, The cooperation transmission point is CoMP serving BS, and cooperation transmission point performs CoMP UE user face data using CoMP resources Scheduled transmission, specifically include：

The schedule information and media access control protocol data unit MAC PDU for the CoMP UE that CCN is sent are received, according to Schedule information determines the CoMP resources that CoMP UE data transfers use, and CoMP resource transmission MAC PDU are utilized on PDSCH；Or Person

According to the CCN CoMP UE sent schedule information and user face data to be transmitted generation MAC PDU, according to scheduling Information determines the CoMP resources that CoMP UE data transfers use, and CoMP resource transmission MAC PDU are utilized on PDSCH；Or

User face data to be transmitted and the non-cooperating transmission mark that CCN is sent are received, determines that CoMP UE carry out non-CoMP biographies It is defeated, in the resource outside the CoMP resources determined by CCN schedule informations, determine that CoMP UE carry out what non-CoMP transmission used CoMP resources, MAC PDU are generated according to the CoMP resources of determination, the CoMP resource transmissions MAC determined is utilized on PDSCH PDU。

With reference to the third possible embodiment of the above method, the cooperation transmission point is CoMP serving BS, also Including：

CoMP UE serving BS receives CoMP UE Attach Request message；

CoMP UE serving BS is gathered according to the cooperation of the serving BS comprising CoMP UE of storage and CCN mapping Relation, by the interface between CCN, the relevant information of Attach Request message and CoMP UE is sent to CCN, will be adhered to by CCN The relevant information of request message and CoMP UE relevant information and CCN is transferred to mobility management entity MME, it is established that MME- The S1-MME connections of CCN-CoMP UE serving BS；Or

CoMP UE serving BS sends the message for including EUTRAN cellular global identities ECGI corresponding to CCN to MME, User plane connection is switched between SGW and CCN by notice MME, and SGW-CCN-CoMP UE are established according to notification triggers by MME Serving BS S1-U connections.

With reference to the 4th kind of possible embodiment of the above method, the cooperation transmission point is CoMP serving BS, also Including：

After CoMP UE establish RRC connections, CoMP UE serving BS determines that triggering CoMP UE carry out coordinate multipoint biography When defeated, passage path handoff procedure notice MME carries out user plane downstream data paths switching, by change user plane downlink data road Footpath is SGW-CCN-CoMP UE serving BS.

In the 4th kind of possible embodiment with reference to the above method, in addition to：

In the 4th kind of possible embodiment with reference to the above method, CoMP UE serving BS determines triggering CoMP UE Cooperative multipoint transmission is carried out, is specifically included：

With reference to the 4th kind of possible embodiment of the above method, CoMP UE serving BS and CCN are not integrated in same During node, further comprise：

The present invention also provides a kind of center cooperative node CCN, including：

Data receipt unit, for obtaining the to be transmitted of cooperative multipoint transmission user terminal CoMP UE from gateway SGW User face data；

Channel information acquisition unit, for belonging to the same all cooperation transmission points acquisition institute to cooperate in set from CCN There are UE channel condition information CSI and non-CoMP UE user face data amount to be transmitted；

Scheduling unit, for the user face data amount to be transmitted and CSI according to all UE, the cooperation transmission with CCN scheduling Point communication, perform the scheduled transmission of CoMP UE user face data.

The present invention also provides a kind of CCN, including processor and data transceiver interface, wherein：

Processor is configured as：Cooperative multipoint transmission user terminal CoMP UE user plane number to be transmitted is obtained from SGW According to；All UE channel condition information CSI and non-is obtained from the same all cooperation transmission points to cooperate in set are belonged to CCN CoMP UE user face data amount to be transmitted；According to all UE user face data amount to be transmitted and CSI, the association with CCN scheduling Make transfer point communication, perform the scheduled transmission of CoMP UE user face data；

The data transceiver interface, for realizing the data transmit-receive between processor and SGW, cooperation transmission point.

Preferably, scheduling unit communicates with the cooperation transmission point that CCN is dispatched, and performs the tune of CoMP UE user face data Degree transmission, is specifically included：

Preferably, when CoMP UE cooperation transmission point does not include CoMP UE serving BS, scheduling unit will also be raw Into schedule information and MAC PDU notices CoMP UE serving BS.

Preferably, scheduling unit is at the time of possible CoMP UE serving BS scheduling CoMP UE data retransmit, no The serving BS for dispatching CoMP UE carries out new data transmission to CoMP UE；Or

Before scheduling unit receives ACK feedbacks of the CoMP UE serving BS to retransmitting data, do not dispatch CoMP UE's Serving BS carries out new data transmission to CoMP UE.

According to all UE user face data amount size to be transmitted and CSI, determine that CoMP UE carry out non-coordinated multipoint transmission When, then：

CoMP UE schedule information and media access control protocol data unit MAC PDU is generated, the scheduling of generation is believed Breath and MAC PDU are sent to CoMP UE serving BS；Or

CoMP UE schedule information is generated, the CoMP UE of generation schedule information and user face data to be transmitted are sent Serving BS to CoMP UE；Or

User face data to be transmitted and non-cooperating transmission mark are sent to CoMP UE serving BS.

Preferably, scheduling unit generation CoMP UE schedule information, by the CoMP UE of generation schedule information and to be passed Defeated user face data is sent to CoMP UE serving BS, specifically includes：

CoMP UE serving BS will pass the identification notification of data to CCN.

Preferably, user face data to be transmitted and non-cooperating transmission mark are sent to CoMP UE service by scheduling unit Base station, specifically include：

CoMP UE serving BS will pass the identification notification of data to CCN.

Preferably, use of the data receipt unit based on the SGW-CCN-CoMP UE serving BS-CoMP UE pre-established Family face downstream data paths, CoMP UE user face data to be transmitted is obtained from SGW.

Preferably, in addition to：Adhere to message reception units, the attachment that the serving BS for receiving CoMP UE is sent please Ask message and CoMP UE relevant information；

Dispatch Unit, for the relevant information of Attach Request message and CoMP UE relevant information and CCN to be transmitted Give mobility management entity MME, it is established that the S1-MME connections of MME-CCN-CoMP UE serving BS.

Preferably, in addition to：Notification unit, for sending triggering CoMP to CoMP UE serving BS when CCN activates UE carries out the notice of cooperative multipoint transmission；Or reported according to each cooperation transmission point CSI, CoMP UE positional informations, it is determined that touch Send out CoMP UE and carry out cooperative multipoint transmission, and during CCN activation, send triggering CoMP UE to CoMP UE serving BS and carry out The notice of cooperative multipoint transmission.

The present invention also provides a kind of cooperation transmission point, and the cooperation transmission point is dispatched by center cooperative node CCN, including：

Reporting unit, for reported to CCN all UE to be communicated with the cooperation transmission point channel condition information CSI and Non- CoMP UE user face data amount to be transmitted；

Scheduled transmission unit, for by being communicated with CCN, determining that cooperative multipoint transmission user terminal CoMP UE data pass The defeated CoMP resources used, CoMP UE user face data scheduled transmission is performed using CoMP resources, is held using non-CoMP resources The non-CoMP UE of row user face data scheduled transmission.

The present invention also provides a kind of cooperation transmission point, including processor and data transceiver interface, wherein：

The processor is configured as：The channel status for reporting all UE to be communicated with the cooperation transmission point to CCN is believed Cease CSI and non-CoMP UE user face data amount to be transmitted；By being communicated with CCN, cooperative multipoint transmission user terminal is determined The CoMP resources that CoMP UE data transfers use, the transmission or scheduling of CoMP UE user face data are performed using CoMP resources Transmission, non-CoMP UE user face data scheduled transmission is performed using non-CoMP resources；

The data transceiver interface, for realizing that the data under the processor and CCN and cooperation transmission point between UE are received Hair.

Preferably, scheduled transmission unit performs CoMP UE user face data scheduled transmission, specific bag using CoMP resources Include：

Preferably, CCN dispatches CoMP UE and carries out cooperative multipoint transmission, and the transfer point is CoMP UE serving BS, Also include：

Retransmission unit, during for determining to need the data to retransmit according to CoMP UE NACK NACK feedback informations, utilize Current non-CoMP scheduling of resource CoMP UE data retransmit.

Preferably, retransmission unit is retransmitted using current non-CoMP scheduling of resource CoMP UE data, is specifically included：

Using CCN scheduling CoMP UE serving BS to CoMP UE carry out outside new data transmission at the time of, scheduling CoMP UE data retransmit.

Preferably, the retransmission unit is additionally operable to：

The synchronization of data is retransmitted to CoMP UE, determines that CCN scheduling CoMP UE serving BS is carried out to CoMP UE New data transmission, new data is received respectively by two HARQ and is fed back with retransmitting the ACK/NACK of data.

Preferably, CCN dispatches CoMP UE and carries out non-cooperating multicast communication, and the transfer point is CoMP serving BS, is adjusted The user face data scheduled transmission that transmission unit performs CoMP UE using CoMP resources is spent, is specifically included：

Preferably, the cooperation transmission point is CoMP serving BS, in addition to：

Adhere to receiving unit, for receiving CoMP UE Attach Request message；

Indicating member, SGW-CCN-CoMP UE serving BS-CoMP UE user plane is established for being defined as CoMP UE During downstream data paths, instruction core net establishes the S1-U connections of SGW-CCN-CoMP UE serving BS.

Preferably, indicating member instruction core net establishes the S1-U connections of SGW-CCN-CoMP UE serving BS, specifically Including：

According to the cooperation set of the serving BS comprising CoMP UE of storage and CCN mapping relations, by between CCN Interface, the relevant information of Attach Request message and CoMP UE is sent to CCN, by CCN by Attach Request message and CoMP UE relevant information and CCN relevant information are transferred to mobility management entity MME, it is established that MME-CCN-CoMP UE clothes The S1-MME connections of business base station；Or

The message for including EUTRAN cellular global identities ECGI corresponding to CCN is sent to MME, notifies MME by user plane Connection is switched between SGW and CCN, and the S1-U for establishing SGW-CCN-CoMP UE serving BS according to notification triggers by MME connects Connect.

Indicating member is changed, for after CoMP UE establish RRC connections, it is determined that triggering CoMP UE progress coordinate multipoint biographies When defeated, passage path handoff procedure notice MME carries out user plane downstream data paths switching, by change user plane downlink data road Footpath is SGW-CCN-CoMP UE serving BS.

CoMP indicating members, for by CoMP UE identify and cooperative multipoint transmission request be sent to CCN；

CoMP responds receiving unit, for receiving the cooperative multipoint transmission response of CCN feedbacks.

Preferably, change indicating member and determine that triggering CoMP UE carry out cooperative multipoint transmission, specifically include：

Reported according to CoMP UE measurement, it is determined whether triggering CoMP UE carry out cooperative multipoint transmission；Or

According to CoMP UE positional information, it is determined whether triggering CoMP UE carry out cooperative multipoint transmission；Or

When receiving the triggering CoMP UE progress cooperative multipoint transmission notices sent during CCN activation, it is determined that triggering CoMP UE Carry out cooperative multipoint transmission.

Preferably, when CoMP UE serving BS is not integrated in same node with CCN, further comprise：

RRC switch units, for triggering the RRC connections between CoMP UE serving BS and COMP UE, switch to RRC connections between COMP UE and CCN.

The present invention gives one kind under non-ideal backhaul scene, cooperative multipoint transmission center cooperative scheduling is realized between base station Data transmission method, this method strengthened existing LTE-A frameworks, can solve under non-ideal backhaul scene by User data transmission process problem when CCN is as scheduling controlling node, help network side timely and accurately to realize and CoMP is used The scheduling decision and data transmission and processing at family, reduce influence of the backhaul time delays to CoMP central dispatchings.

Brief description of the drawings

Fig. 1 is the information exchange schematic diagram of non-central scheduling；

The information exchange schematic diagram dispatched centered on Fig. 2；

Fig. 3 is the E-UTRAN network architectures；

Fig. 4 is the data transmission method flow chart of CCN of embodiment of the present invention sides cooperative multipoint transmission central dispatching；

Fig. 5 is the data transmission method flow chart of transfer point of embodiment of the present invention side cooperative multipoint transmission central dispatching；

Line number under the user plane that Fig. 6 is the serving BS-CoMP UE that the embodiment of the present invention 1 establishes SGW-CCN-CoMP UE According to path schematic diagram；

Fig. 7 a are the data transmission architecture figure that embodiment 1 does not carry out foundation during RRC；

Fig. 7 b are the data transmission architecture figure that embodiment 1 established after RRC switchings；

Fig. 8 is the use for the serving BS-CoMP UE that the embodiment of the present invention 2 and embodiment 3 establish SGW-CCN-CoMP UE Family face downstream data paths schematic diagram；

Fig. 9 a are the data transmission architecture figure that the embodiment of the present invention 2 is established；

Fig. 9 b are the data transmission architecture figure that the embodiment of the present invention 3 is established；

Figure 10 is heterogeneous network schematic diagram；

Figure 11 is node CCN schematic diagrames in cooperation center's provided in an embodiment of the present invention；

Figure 12 is transfer point schematic diagram provided in an embodiment of the present invention.

Embodiment

With reference to the accompanying drawings and examples to the data transmission method of cooperative multipoint transmission central dispatching provided by the invention It is described in more detail with apparatus and system.

In order to reduce the interference of the adjacent area of MPS process edge user terminal, the experience of cell boundary user terminal is improved, it is long Phase evolution enhancing (long term evolution-advance, LTE-A) system employs cooperative multipoint transmission technology (coordinated-multiple-point, CoMP), and will with the presence or absence of Centroid progress global optimization scheduling with it The implementation of CoMP technologies is divided into two kinds of non-central cooperative scheduling and center cooperative scheduling.In view of real network situation, LTE-A versions 12 introduce the CoMP scenes of non-ideal backhaul.In the case of non-ideal backhaul center cooperative scheduling, by To be realized in CoMP UE scheduling controlling function by center cooperative node CCN, and between CCN and eNB, service eNB and other eNB Between the backhaul delay problems (typical unidirectional backhaul time delay values be 10ms) that can not ignore be present, it is therefore desirable to examine Consider the scheduling under this scene and realize and transmit feedback problem of implementation.

The embodiment of the present invention provides a kind of data transmission system of cooperative multipoint transmission central dispatching, including：

The signified CoMP UE of the embodiment of the present invention, refer to the dispatching party that there is the UE of CoMP abilities, CCN to determine CoMP UE Case, the CoMP UE can be dispatched and carry out cooperative multipoint transmission, the CoMP UE can also be dispatched and carry out non-cooperating multicast communication, this Embodiment is referred to as unicast.The signified non-CoMP UE of the present embodiment, refer to the UE without CoMP abilities, CoMP resources, tool Body refers to the resource that CoMP UE transmission uses, and whether cooperative multipoint transmission is carried out but regardless of the CoMP UE.

In CCN centers cooperative scheduling function activation, each cooperation transmission point of CCN scheduling needs to use the embodiment of the present invention The CSI information transfers of family terminal are communicated with cooperation transmission point by CCN to CCN, perform CoMP UE scheduling controlling function.CCN The cooperation transmission point of scheduling, according to the communication with CCN, the CoMP resources of CoMP UE data transfers are determined, are held using CoMP resources Row CoMP UE user face data scheduled transmission, and for non-CoMP UE, transmission plan is decided in its sole discretion simultaneously by cooperation transmission point It is transmitted.

Therefore, the data transmission architecture of data transmission system provided in an embodiment of the present invention is：The transmission of user face data Path is SGW-CCN- cooperation transmissions point-UE.When can solve under non-ideal backhaul scene by CCN as scheduling controlling node User data transmission process problem, help network side timely and accurately to realize scheduling decision and data transfer to CoMP user Processing, reduces influence of the backhaul time delays to CoMP central dispatchings.

Transmission side data of the embodiment of the present invention applied to the cooperative multipoint transmission central dispatching of said system is given below Method, as shown in figure 4, including：

Step 401, cooperative node CCN in center obtains cooperative multipoint transmission user terminal CoMP UE's from gateway SGW User face data to be transmitted；

Step 402, channel status of the CCN from all UE of all cooperation transmission points acquisition for belonging to the same set that cooperates with it Information CSI and non-CoMP UE user face data amount to be transmitted；

Step 403, CCN is according to all UE user face data amount to be transmitted and CSI, the cooperation transmission point with CCN scheduling Communication, perform the scheduled transmission of CoMP UE user face data.

CCN is according to all UE user face data amount to be transmitted and CSI, it may be determined that CoMP UE scheduling scheme, specifically Non- coordinated multipoint transmission is still carried out to determine that CoMP UE carry out coordinated multipoint transmission, coordinated multipoint transmission is such as carried out, specifically adopts Coordinated multipoint transmission scheme, when carrying out coordinated multipoint transmission for CoMP UE or carry out non-coordinated multipoint transmission, perform The scheduled transmission of CoMP UE user face data specifically uses following scheme respectively：

1) CCN determines that CoMP UE carry out coordinated multipoint transmission

CCN determines that CoMP UE carry out multipoint cooperative biography according to all UE user face data amount size to be transmitted and CSI When defeated, CCN selection CoMP UE cooperation transmission point, and generate CoMP UE schedule information and media access control protocol data Unit MAC PDU, it is preferable that MAC PDU are generated according to CoMP UE user plane data to be transmitted and schedule information；

Therefore, the transmission path of user face data is SGW-CCN- cooperation transmissions point-CoMP UE.

In order to support to retransmit the processing of data, it is preferable that do not include CoMP UE clothes in CoMP UE cooperation transmission point During business base station, the serving BS for schedule information and MAC PDU notice the CoMP UE that CCN will additionally generate.The embodiment of the present invention for Retransmit data and use following processing mode：

For carry out coordinated multipoint transmission CoMP UE, CoMP UE serving BS according to CoMP UE NACK When NACK feedback informations determine to need the data to retransmit, CoMP resources are determined according to CCN schedule information, and using current non- CoMP scheduling of resource CoMP UE data retransmit.

CoMP resources include time-domain resource and frequency domain resource, it is preferable that CoMP UE serving BS utilizes currently non- CoMP scheduling of resource CoMP UE data retransmit, and specifically include：

Utilize the different transmission of time-domain resource scheduling new data and the transmission of re-transmission data.

Resource contention occurs in order to evade the transmission of new data and retransmit the transmission of data, phase can also be performed in CCN sides The treatment measures answered：

It is further preferred that the serving BS of CoMP UE, the CoMP UE for carrying out coordinated multipoint transmission are according to CoMP When UE NACK NACK feedback informations determine to need the data retransmit, data are retransmitted to CoMP UE；If CoMP UE service Base station retransmits the synchronization of data to CoMP UE, and CCN scheduling CoMP UE serving BS carries out new data biography to CoMP UE Defeated, then CoMP UE serving BS receives new data by two HARQ and fed back with retransmitting the ACK/NACK of data respectively.

2) CCN determines that CoMP UE carry out non-coordinated multipoint transmission

CCN determines that CoMP UE carry out non-multipoint cooperative according to all UE user face data amount size to be transmitted and CSI During transmission, it is preferred to use following any processing mode：

Processing mode one, CCN generation CoMP UE schedule information and media access control protocol data unit MAC PDU, The schedule information of generation and MAC PDU are sent to CoMP UE serving BS；

Processing mode two, CCN generations CoMP UE schedule information, by the CoMP UE of generation schedule information and to be transmitted User face data is sent to CoMP UE serving BS；

User face data to be transmitted and non-cooperating transmission mark are sent to CoMP UE service base by processing mode three, CCN Stand, i.e., by CoMP UE serving BS decision-making CoMP UE transmission means.

Preferably, CCN generates CoMP UE schedule information, by the CoMP UE of generation schedule information and user to be transmitted Face data are sent to CoMP UE serving BS, specifically include：

CoMP UE serving BS will pass the identification notification of data to CCN.

Preferably, user face data to be transmitted and non-cooperating transmission mark are sent to CoMP UE serving BS by CCN, Specifically include：

CoMP UE serving BS will pass the identification notification of data to CCN.

User face data to be transmitted is sent to CoMP UE serving BS by CCN by several times, waits to receive the sound of its transmission success Ying Hou, then transmit remaining remaining part user face data to be transmitted.

Below from the cooperation transmission point side of CCN scheduling, a kind of cooperative multipoint transmission center applied to said system is provided The data transmission method of scheduling, as shown in figure 5, including：

Step 501, cooperation transmission point reports the channel condition information CSI of all UE under the CCN and non-cooperating more to CCN Point transmission user terminal CoMP UE user face data amount to be transmitted；

Step 502, cooperation transmission point determines the CoMP resources that CoMP UE data transfers use, profit by being communicated with CCN CoMP UE user face data scheduled transmission is performed with CoMP resources, non-CoMP UE user plane is performed using non-CoMP resources Data dispatch transmits.

Preferably, cooperation transmission point performs CoMP UE user face data scheduled transmission, specific bag using CoMP resources Include：

Preferably, CCN dispatches CoMP UE and carries out cooperative multipoint transmission, and the cooperation transmission point is CoMP UE service base Stand, in addition to：

Preferably, CoMP UE serving BS is retransmitted using current non-CoMP scheduling of resource CoMP UE data, specifically Including：

Preferably, in addition to：If CoMP UE serving BS retransmits the synchronization of data to CoMP UE, CCN is determined The serving BS for dispatching CoMP UE carries out new data transmission to CoMP UE, and CoMP UE serving BS passes through two HARQ points Jie Shou not ACK/NACK feedback of the new data with retransmitting data.

Preferably, CCN dispatches CoMP UE and carries out non-cooperating multicast communication, and the cooperation transmission point is CoMP service base Stand, cooperation transmission point performs CoMP UE user face data scheduled transmission using CoMP resources, specifically includes：

Preferably, CCN of the embodiment of the present invention is based on the SGW-CCN-CoMP UE serving BS-CoMP UE's pre-established User plane downstream data paths, CoMP UE user face data to be transmitted is obtained from SGW.

Preferably, during CoMP UE initial radio resource control RRC connections are established, SGW- is established for CoMP UE CCN-CoMP UE serving BS-CoMP UE user plane downstream data paths；Or after CoMP UE establish RRC connections, Line number under the user plane that passage path change mode is the serving BS-CoMP UE that CoMP UE establish SGW-CCN-CoMP UE According to path.

The SGW-CCN-CoMP UE pre-established serving BS-CoMP UE user plane is provided with reference to embodiment The preferred embodiment of downstream data paths.

Embodiment 1

The present embodiment establishes SGW-CCN-CoMP UE during CoMP UE Initial R RC connections are established, for CoMP UE Serving BS-CoMP UE user plane downstream data paths, including：

CoMP UE serving BS receives CoMP UE Attach Request message；

Specifically in the following way：

As shown in fig. 6, implementation process in detail is as follows：

1) UE Non-Access Stratum NAS layers initiate attach request attach request message, and this NAS message reaches UE's Initial R RC connection procedures are triggered after rrc layer.Attach request NAS message is included in what is returned to service eNB by UE RRC, which is established in completion message, is sent to service eNB.

Attach request message includes UE relevant informations, specifically includes IMSI (International Mobile Subscriber Identity, international mobile subscriber identification code), UE core net ability UE Core Network The message such as Capability, in addition UE also need to report UE wireless network capabilities, i.e. whether UE supports cooperative multipoint transmission ability.

2) after service eNB receives Attach request, know that UE has the ability for supporting CoMP transmission.Service eNB roots The factors such as CoMP tenability situation and network side strategy are judged whether to build according to UE CoMP tenability, current network Serving BS-CoMP the UE that vertical CoMP UE user-plane transmissions path is SGW-CCN-CoMP UE, if so, performing step 3), if it is not, then establishing user plane path according to existing protocol.

3) when being judged as YES, path connection is established according to SGW-CCN-CoMP UE serving BS-CoMP UE, specifically For service eNB, according to the cooperation set (including service eNB, cell Node etc.) of storage and CCN mapping relations, (such as OAM is configured Notice), by the interface between CCN, Attach request message and UE relevant informations are sent to CCN.

Preferably, UE relevant informations include CSG (Close Subscriber Group, closing and contracted user's group) access moulds The information such as formula, CSG ID, TAI (Tracking Area Identity, tracking area identification), the message for transmitting these information can be with It is to aim at the new X2AP procedure messages or expand for CoMP existing X2AP protocol procedures that CoMP functions define Procedure message between the message of exhibition or other nodes (interface established between CCN and eNB can be X2 interface or other The interface for having or newly introducing).

4) after CCN receives the information of service eNB notices, it is believed that the CoMP UE cooperative multipoint transmission function activations, and will be attached The relevant information of request message and CoMP UE and CCN relevant information is transferred to MME, and then set up MME-CCN-CoMP The S1-MME connections of UE serving BS.

Preferably, CCN relevant information includes：ECGI (EUTRAN Cell Global Identity, EUTRAN cells Global identity), ECGI is by the affiliated PLMN of CCN (Public Land Mobile Network, public land mobile network) and CCN ID respective cells mark Cell Identity compositions.

Preferably, above- mentioned information is transferred to MME by CCN by S1-MME control messages.

5) the S1-U connections of SGW-CCN-CoMP UE serving BS are established in MME triggerings, are implemented compared with agreement, Accompanying drawing 6 is may refer to, I will not elaborate.

Based on said process, as shown in Figure 7a, the data transmission architecture that the embodiment of the present invention is established is：CoMP UE use Family face data transfer path is：S-GW<->CCN<->Serving BS<->UE；CoMP UE chain of command data transfer path is： MME<->CCN<->Serving BS<->UE；Transmitting scheduling information path between CCN and cooperation transmission point is：CCN- respectively cooperates biography Defeated point.

Alternatively, when CoMP UE serving BS is not integrated in same node with CCN, it is contemplated that reduce access network switching Expense, follow-up service eNB can trigger handoff procedure as needed, as supporting carrying to separate and CCN nodes are macro base station Under scene, CoMP UE are connected with network-side service eNB RRC, the RRC connections between COMP UE and CCN is switched to, then counts According to transmission architecture as shown in Figure 7b, specific handoff procedure is existing process, and I will not elaborate.

Alternatively, when RRC connections of eating dishes without rice or wine are switched between CCN and UE, RRC signaling issues UE by CCN.

The cooperative multipoint transmission central dispatching provided based on above-mentioned data transmission architecture using the above embodiment of the present invention Data transfer carries out data transmission, and no longer repeats here.

Embodiment 2

The present embodiment CoMP UE Initial R RC connections establish during, eNB according to CoMP UE abilities select CCN for CoMP UE and core net transmission intermediate transit point, establish SGW-CCN-CoMP UE serving BS-CoMP UE's for CoMP UE User plane downstream data paths.

Specifically in the following way：

CoMP UE serving BS receives CoMP UE Attach Request message；

CoMP UE serving BS is defined as the use that CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE During the downstream data paths of family face, instruction core net establishes the S1-U connections of SGW-CCN-CoMP UE serving BS, specific bag Include：

As shown in figure 8, implementation process in detail is as follows：

3) service eNB and the message for including EUTRAN cellular global identities ECGI corresponding to CCN is sent to MME, notice MME will User plane connection is switched between SGW and CCN；

Preferably, when service eNB reports NAS request by S1-MME control messages, while notify MME by S1 user Plane is switched between SGW and CCN, and S1-MME is remained between eNB and MME.The S1-MME control messages need to wrap ECGI containing CCN and user plane switching instruction.

4) MME triggers SGW and carries out S1-U conversions,.

Specially MME is during session request create session request etc. are created, by corresponding to CCN ECGI corresponding to EUTRAN cellular global identity ECGI, substitution CoMP UE serving BS is simultaneously notified to SGW, subsequent execution mistake Journey sets up the S1-U connections of SGW-CCN-CoMP UE serving BS compared with agreement

Preferably, in addition to：MME notice CCN CoMP UE cooperative multipoint transmission function activation.

Based on said process, as illustrated in fig. 9, the data transmission architecture that the embodiment of the present invention is established is：CoMP UE use Family face data transfer path is：S-GW<->CCN<->Serving BS<->UE；CoMP UE chain of command data transfer path is： MME<->Serving BS<->UE；Transmitting scheduling information path between CCN and cooperation transmission point is：Each cooperation transmission points of CCN-.

In addition, chain of command data path can also be switched to MME by MME<->CCN<->Serving BS<->UE, then MME can To send chain of command path change instruction message, notice eNB/CCN chains of command path change is MME<->CCN<->Serving BS <->UE。

Alternatively, when CoMP UE serving BS is not integrated in same node with CCN, it is contemplated that reduce access network switching Expense, follow-up service eNB can trigger handoff procedure as needed, and CoMP UE are connected with network-side service eNB RRC, cut The RRC connections being changed between COMP UE and CCN, specific handoff procedure are existing process, and I will not elaborate.

Embodiment 3

The present embodiment CoMP UE Initial R RC connections establish during, MME according to CoMP UE abilities select CCN for CoMP UE and core net transmission intermediate transit point, establish SGW-CCN-CoMP UE serving BS-CoMP UE's for CoMP UE User plane downstream data paths.

Specifically in the following way：

CoMP UE serving BS receives CoMP UE Attach Request message；

As shown in figure 8, implementation process in detail is as follows：

2) after service eNB receives Attach request, by the relevant information of the Attach Request message of reception and CoMP UE It is sent to MME；

Preferably, CoMP UE relevant information includes：The information such as CSG access mode, CSG ID, TAI+ECGI.

Preferably, above- mentioned information is transferred to MME by service eNB by S1-MME control messages.

3) the S1-MME control messages that MME is sent according to eNB know that UE supports cooperative multipoint transmission ability, according to current net Network judges whether to establish CoMP UE user-plane transmissions path to factors such as CoMP tenability situation and network side strategies For SGW-CCN- transfer points-UE；If so, step 4) is performed, if it is not, being performed according to existing protocol.

4) according to the cooperation set of the serving BS comprising CoMP UE of storage and CCN mapping relations, (such as OAM matches somebody with somebody MME Put notice), during session request create session request etc. are created, by EUTRAN cells corresponding to CCN ECGI corresponding to global identity ECGI, substitution CoMP UE serving BS simultaneously notifies that subsequent execution process is compared with association to SGW View, and then set up the S1-U connections of SGW-CCN-CoMP UE serving BS.In addition, MME can also be by chain of command data road Footpath switches to MME<->CCN<->Serving BS<->UE.

Based on said process, as shown in figure 9b, the data transmission architecture that the embodiment of the present invention is established is：CoMP UE use Family face data transfer path is：S-GW<->CCN<->Serving BS<->UE；CoMP UE chain of command data transfer path is： MME<->CCN<->Serving BS<->UE；Transmitting scheduling information path between CCN and cooperation transmission point is：CCN- respectively cooperates biography Defeated point.

Preferably, in addition to：MME notice CoMP UE serving BS user plane downstream data paths are SGW-CCN- CoMP UE serving BS；

In addition, follow-up MME can send chain of command path change instruction message, eNB/CCN chain of command path changes are notified For MME<->CCN<->Serving BS<->UE, the chain of command information with core net is received/transmits by CCN.

Embodiment 4

The present embodiment is given at after CoMP UE establish RRC connections, and passage path change mode is that CoMP UE establish SGW- The embodiment of CCN-CoMP UE serving BS-CoMP UE user plane downstream data paths.

Mode one

After CoMP UE establish RRC connections, CoMP UE serving BS determines that triggering CoMP UE carry out coordinate multipoint biography When defeated, passage path handoff procedure notice MME carries out user plane downstream data paths switching；MME changes user plane according to notice Downstream data paths are SGW-CCN-CoMP UE serving BS.

Specifically, in cell switch process, path switch request that MME triggers according to handover-target base station During the Target Cell Identifier that notifies (this mark ECGI as corresponding to CCN, substitution CoMP UE handover-target base station are corresponding ECGI), set up cutting for SGW-CCN-CoMP UE during session request create session request etc. are created Change the S1-U connections of target BS.Or MME gathers with CCN's according to the cooperation of the serving BS comprising CoMP UE of storage Mapping relations, during session request create session request etc. are created, by ECGI corresponding to CCN, substitution ECGI corresponding to CoMP UE serving BS simultaneously notifies to set up SGW- compared with agreement to SGW, subsequent execution process The S1-U connections of CCN-CoMP UE serving BS.In addition, MME is also an option that switches to MME by chain of command data path<- >CCN<->Serving BS<->UE, or selection S1-MME are remained between eNB and MME.

CoMP UE serving BS determines that triggering CoMP UE carry out cooperative multipoint transmission, it is specific using it is following either one Formula：

1) CoMP UE serving BS is reported according to CoMP UE measurement, it is determined whether triggering CoMP UE are cooperated Multicast communication；

Assuming that CoMP UE are by serving BS initial access network.After CoMP UE access networks, serving BS configuration UE enters Row measurement, when serving BS reports according to UE measurement judges that UE needs to carry out cooperative multipoint transmission, between triggering and MME Path Switch Request processes, notice MME changes transmission path endpoint is CCN.

2) CoMP UE serving BS is according to CoMP UE positional information, it is determined whether triggering CoMP UE are cooperated Multicast communication；

When serving BS such as CoMP UE determines that CoMP UE are in cooperation cell overlapping region, triggering CoMP UE are carried out Cooperative multipoint transmission.

3) CoMP UE are triggered by CCN and performs cooperative multipoint transmission, CoMP UE serving BS is sent when receiving CCN activation Triggering CoMP UE when carrying out cooperative multipoint transmission notice, it is determined that triggering CoMP UE carry out cooperative multipoint transmission.

The notice of triggering CoMP UE progress cooperative multipoint transmissions is sent when being activated such as CCN to CoMP UE serving BS, The information such as the CoMP UE notified rear interaction CSI of serving BS, and trigger path switch request processes etc.；Or

CSI that CCN reports according to each transfer point, CoMP UE positional informations, judge whether that triggering CoMP UE is cooperated Multicast communication, when being judged as YES, and when CCN is activated, CCN sends triggering CoMP UE to CoMP UE serving BS and cooperated The notice of multicast communication, CoMP UE serving BS trigger path switch request processes etc. after receiving the notice.

Preferably, CoMP UE serving BS identifies CoMP UE and cooperative multipoint transmission request is sent to CCN；

After CCN receives CoMP UE serving BS notice, service of the feedback UE CoMP transmissions response message to CoMP UE Base station, CoMP UE serving BS receive the cooperative multipoint transmission response of CCN feedbacks.

Preferably, when CoMP UE serving BS or CCN determine no longer to dispatch CoMP UE cooperative multipoint transmission, interaction CoMP UE cooperative multipoint transmission function is deactivated, and passage path change mode is that CoMP UE establish SGW-CoMP UE's Serving BS-CoMP UE user plane downstream data paths.Specific similar activation, here is omitted.

Mode two

Specifically, cooperation set and CCN mapping relations of the MME according to the serving BS comprising CoMP UE of storage, During creating session request create session request etc., by ECGI corresponding to CCN, substitution CoMP UE service ECGI corresponding to base station simultaneously notifies that, to SGW, subsequent execution process sets up SGW-CCN-CoMP UE's compared with agreement The S1-U connections of serving BS.In addition, MME is also an option that switches to MME by chain of command data path<->CCN<->Service base Stand<->UE, or selection S1-MME are remained between eNB and MME.Or the path that MME triggers according to handover-target base station (this mark ECGI as corresponding to CCN, substitution CoMP UE's cuts the Target Cell Identifier notified during switch request Change ECGI corresponding to target BS), set up SGW- during session request create session request etc. are created The S1-U connections of CCN-CoMP UE handover-target base station.Subsequent execution process is compared with agreement.

Based on said process, the data transmission architecture that the embodiment of the present invention is established is：CoMP UE user plane data transfer Path is：S-GW<->CCN<->Serving BS<->UE；CoMP UE chain of command data transfer path is：MME<->CCN<-> Serving BS<->UE, or be MME<->Serving BS<->UE；Transmitting scheduling information path between CCN and cooperation transmission point is： Each cooperation transmission points of CCN-.

Embodiment 5

CCN is CoMP UE serving BS in the present embodiment, the SGW-CCN-CoMP UE pre-established serving BS- CoMP UE user plane downstream data paths, including：

It is stand-alone base station which, which is primarily adapted for use in CCN, and provides situation about extensively covering.

Assuming that CoMP UE are by serving BS initial access network.After CoMP UE access networks, serving BS configuration UE enters Row measurement, when serving BS reports according to UE measurement judges that UE needs to carry out cooperative multipoint transmission, trigger the switching of the UE Process, it is switched to worked under CCN.Or serving BS (can also such as overlap according to UE positional informations in cooperation cell Region) judge UE need carry out cooperative multipoint transmission when, trigger CoMP UE being switched under CCN working.Or also may be used Cooperative multipoint transmission is performed to trigger CoMP UE by CCN, CoMP UE former serving BS receives the triggering sent during CCN activation When CoMP UE carry out cooperative multipoint transmission notice, it is switched to worked under CCN.

Preferably, triggering CoMP UE are sent to CoMP UE serving BS when CCN is activated and carry out cooperative multipoint transmission Notice；Or CCN reported according to each transfer point CSI, CoMP UE positional informations, it is determined that triggering CoMP UE carry out coordinate multipoint Transmission, and during CCN activation, CCN sends the notice of triggering CoMP UE progress cooperative multipoint transmissions to CoMP UE serving BS.

Subsequently, when CCN or serving BS judge no longer to dispatch CoMP UE cooperative multipoint transmission, interaction deactivates association Make multicast communication function, handoff procedure can also be triggered, CoMP UE are switched to former CoMP UE serving BS, herein no longer Repeat.

After the completion of switching, CCN is CoMP UE serving BS, is hereafter scheduled control by transmission of the CCN to CoMP UE System (including transmission point selection, PRB resource selections), group bag transmission etc..Specific scheduled transmission method referring to above-described embodiment, this In repeat no more.

With the deployment of Home eNodeB, Microcell etc., the homogeneous network of traditional only macrocell will progressively be evolved to more The heterogeneous network that type cell coexists.Under heterogeneous network, macro base station (Marco eNB) can provide basic covering, low work( The local node (Local eNB/Small cell) of rate provides small range covering in macro base station coverage, such as Figure 10 institutes Show, wherein the local node of low-power can be RN (Relay Node, via node), HeNB (Home eNodeB, it is family Base station), Microcell (Pico cell) base station etc..

For center cooperative scheduling scene, if cooperative node is cell (such as Local eNB), and CCN extensively covers to provide The node (such as Macro eNB) of lid, then enter line frequency between the UE mobile cooperative node that may cause UE under same CCN service ranges Numerous switching, increase hand off signaling expense.

CoMP UE will be switched under CCN and work by the embodiment of the present invention, avoid and frequently be cut caused by being moved due to UE Change, so as to save signaling consumption.

Embodiment 6

It is given below under the user face data path of the serving BS based on SGW-CCN-CoMP UE, cooperative multipoint transmission The data transmission method detailed embodiment of central dispatching.

CCN dispatches CoMP UE cooperative multipoint transmissions and unicast (CoMP UE unicast is non-CoMP transmission).

This programme is applied to all CoMP transmission technologies (DPS/DPB, CS/CB, JT etc.), and the present embodiment is only passed with CS/CB Defeated citing.

System postulation is as follows：It is assumed that eNB1, eNB2, eNB3 are the cooperative base station under CCN.UE1 (CoMP UE, measuring assembly Include base station 1 and base station 3), UE2 serving BS be eNB1, (CoMP UE, measuring assembly include base station 2 and base station to UE3 3), UE4 serving BS is eNB2, and UE5 serving BS is eNB3.It is not designated as being used for non-CoMP for CoMP user terminal Family terminal.

All user terminals of step 1) service eNB to it and report CSI information, and each base station is by backhaul by all UE's CSI information, for non-CoMP UE data to be transmitted amount information transfer to CCN, the user plane that CCN obtains CoMP UE from SGW is to be passed Transmission of data.

UE is to its serving base stations report CSI information (prior art)；Cooperation set (carries out concentration tune by a CCN The set of the base station composition of degree) in each base station receive UE CSI and report, and each UE letter is transmitted to CCN by backhaul Road information.Base station can also include root to CCN any one UE transmitted channel information including the CSI that the UE is reported The CSI information statistics that the CSI reported according to the user terminal is obtained.

CCN nodes can be OAM pre-configured good, if the Macro eNB under alien frequencies scene are as CCN.OAM selectes CCN Afterwards, it is CCN node information notifications is autonomous to each base station in the CCN management regions or each base station in certain area What selection determined, as the base station that each base station selected offer in certain area extensively covers, or scheduling/data computing capability are stronger Base station is CCN nodes.

The CSI information for all UE that step 2) CCN reports according to cooperative base station, user terminal data volume letter waiting for transmission Breath, determines schedule information, and schedule information is notified to cooperative base station.

CCN receives the channel information of each served user terminals of each cooperative base station transmission in cooperation set, according to association Make all user profile in gathering, (CCN is CoMP UE data transfer intermediate transit point, CCN to COMP UE data to be transmitted information Know CoMP UE specific data to be transmitted information), non-CoMP UE data to be transmitted amount information (each cooperative base station interact to CCN CoMP UE scheduling scheme) is determined, it is determined that when being scheduled to CoMP UE, schedule information is notified by backhaul Each cooperative base station.

Specifically, the scheduled CoMP UE of CCN selections, the resource information each distributed for scheduled CoMP UE (MCS, PRB numbers, PRB positions), and MAC PDU are obtained to user plane data to be transmitted group bag according to these information, it is non- (it is that this information need not specially lead to be not yet assigned to the surplus resources that CoMP UE are used to the PRB resources group that CoMP UE distribution uses Know to cooperative base station.Hereinafter referred to as non-CoMP resources), message identification corresponding to specific CoMP transmission scheme, and cooperation base Schedule informations such as precoding limitation, the signal of CoMP transmission and/or the disturbance state stood etc..No matter CCN scheduling CoMP UE are carried out Unicast or cooperative multipoint transmission, specific scheduling are performed by CCN, and scheduling resource is selected by CCN.

Especially, CCN is the transfer point of CoMP UE selections, each CoMP UE resource (MCS, PRB position, PRB number Deng) when, these resources can in a cycle effectively, can also before next time reschedules continuously effective.

Assuming that CCN dispatches CS/CB transmission (the specific scheduling letter under eNB1 for UE1 according to CSI, data to be transmitted amount information Breath also includes MCS class 6s, and PRB number is that 3, PRB index are 0~2, and organizes bag MAC PDU1), eNB3 has been disturbed back Keep away；Scheduled eNB2 unicast for UE3, (specific schedule information also includes MCS grades 3, and PRB number is 1, PRB index For 5, and organize bag MAC PDU2).CCN identifies UE1, UE1 schedule information, UE1 MAC PDU1 is notified to eNB1, simultaneously By the disturbance state information of the cooperative base station of jam avoidance (as being expressed as CS/CB transmission carried out the eNB3 of jam avoidance Mark), notify to eNB1；CCN to eNB2 notice UE3 marks, to UE3 unicast schedule information, UE3 MAC PDU2； CCN can use pre-coding matrix set to eNB3 notices, for avoiding the interference transmitted to UE1CS/CB under eNB1.

Step 3) cooperative base station receives the schedule information of CCN notices by backhaul, and is carried out according to CCN notice CoMP UE and non-CoMP UE scheduled transmission.

ENB1, eNB2, eNB3 receive CCN schedule information by backhaul respectively, and are adjusted according to schedule information Degree.

UE marks that eNB1 notifies according to CCN, UE schedule informations, CCN interaction this UE MAC PDU1, it is determined that scheduling is used Family UE1CS/CB is transmitted and corresponding scheduling resource information, generates PDSCH resource impact information, CoMP resources are utilized on PDSCH Transmit MAC PDU1；Determine that eNB3 is jam avoidance base station according to eNB marks in disturbance state information, reported recently according to UE1 CSI information calculate the information such as the pre-coding matrix of the transmission；Meanwhile NDI information, the HARQ processes of eNB1 generation corresponding datas Number, redundant version number, PDSCH resource impact information etc., generation PDCCH scheduling UE1 CS/CB transmission.It is being except PRB index In PRB resources outside 0~2, eNB1 can voluntarily dispatch UE2 and carry out non-CoMP biographies according to the CSI information that UE2 is reported recently It is defeated.UE marks that eNB2 notifies according to CCN, UE schedule informations, CCN interaction UE3 MAC PDU2, it is determined that scheduling UE3 single-points Transmission and scheduling resource information, PDSCH resource impact information is generated, the CSI reported recently according to UE3, calculates the pre- of the transmission The information such as encoder matrix；The corresponding MAC PDU2 of eNB2 generations NDI information, HARQ process numbers, redundant version number, PDSCH resources Map information etc., generate PDCCH.The CSI that eNB2 is reported recently according to UE4, UE4 non-CoMP transmission is selected to dispatch.ENB3 roots The CSI reported recently according to UE5 is scheduled, and dispatches UE5 without using the pre-coding matrix outside available pre-coding matrix set Non- CoMP transmission.

Step 4) UE ACK/NACK feed back and retransmitted.

UE gives ACK/NACK feedback of the information to respective serving BS, and serving BS feeds back according to ACK/NACK determines needs During re-transmission, retransmitted using the non-CoMP scheduling of resource CoMP UE data at current time.That is CCN only carries out CoMP UE initial biography Defeated scheduling, CoMP UE retransfer scheduling is carried out by serving BS.In order to reduce shadow of the backhaul time delays for retransfer scheduling Ring, if the non-CoMP of initial transmission node of CCN selections serving BS, MAC PDUs of the CCN in notice cooperation point initial transmission When, while need the MAC PDU to be transferred to the serving BS of the UE.

Especially, if CCN dispatches the synchronization that CoMP UE carry out new data transmission in serving BS, serving BS is adjusted The re-transmission of the UE is spent, then requires that UE has two HARQ processes (extension of HARQ processes, increase UE in the same subframe of serving cell The HARQ processes number of a corresponding cell).

In addition, serving BS can also according to CCN whether possible retransmission time scheduled the CoMP UE data pass It is defeated to decide whether to carry out the retransfer scheduling of the UE.

Or limit CCN transmission point selection, that is, CCN is limited in possible CoMP UE retransmission times, does not dispatch this CoMP UE, the ACK of the data transfer is fed back until receiving serving BS.

Assuming that the TDD configurations of each cooperative base station are configuration 1, CS/CB data of the eNB1 in the subframe 0 of radio frames 1 scheduling UE1 Initial transmission, UE2 non-CoMP transmission, eNB2 dispatch UE3 unicast, UE4 non-CoMP transmission in subframe 0, and eNB3 exists Subframe 0 dispatches the non-CoMP transmissions of UE5, and in subframe 7UE feedback A/N to serving BS, and UE1 feedback NACK feed back to eNB1, UE4 NACK gives respective serving BS to eNB2, other UE feeding back ACKs.Then, eNB1 can use in the subframe 1 of radio frames 2 earliest The non-CoMP scheduling of resource UE1 at moment re-transmission (according to non-CoMP UE Schedule retransmissions), eNB2 can be in the son of radio frames 2 Frame 1, use the non-CoMP scheduling of resource UE4 at moment re-transmission.Further, in order to avoid CCN and eNB1 are in radio frames 2 Subframe 1 dispatch UE1 and carry out new data transmission and re-transmission, eNB1 can select to carry out outside new data transmission in CCN scheduling UE1 Other available downlink resources, the subframe 4/5/6 of such as radio frames 2, carry out UE1 retransfer scheduling.

Embodiment 7

The present embodiment is provided under the user face data path of the serving BS based on SGW-CCN-CoMP UE, coordinate multipoint The data transmission method detailed embodiment of transmission center scheduling.

CCN dispatches CoMP UE cooperative multipoint transmissions, and CoMP UE unicasts are dispatched by CoMP UE serving BS (CoMP UE unicast is non-CoMP transmission).

System postulation no longer repeats here with embodiment 6.

CCN dispatches concrete scheme to CoMP UE cooperative multipoint transmission with embodiment 6, but CoMP UE unicast Scheduling mode is different from embodiment 6.For embodiment 7, CoMP UE unicast is scheduled and passed by serving BS It is defeated.Specific difference is as follows：

CCN carries out single-point according to CSI, data to be transmitted amount information, selection scheduling CoMP UE (UE3 under such as eNB2) Transmission.While CCN notice serving BS eNB2UE3 marks, unicast scheduling instruction, one is notified corresponding to eNB2UE3 Point data to be transmitted (the data volume size notified can be estimated with maximum scheduling resource).ENB2 knows that CCN is notified, according to The information such as the newest CSI reported of UE3, determine MCS, PRB position, PRB number, and group bag MAC PDU, scheduling UE3 carry out single-point biography It is defeated.Meanwhile the data end marks that data have been transmitted after group bag MAC PDU are informed CCN by eNB2.In eNB2 feedback data end In this section of time delay of mark, CCN does not dispatch the data transfer of the UE3, can not reduction number so as to prevent that data receiver is out of order According to.

The above embodiment of the present invention is given under a kind of backhaul scene non-ideal between base station, is realized in cooperative multipoint transmission The data transmission method of heart cooperative scheduling, reduce influence of the backhaul time delays to CoMP central dispatchings.This method is to existing LTE-A frameworks strengthened, can solve under non-ideal backhaul scene by CCN user during as scheduling controlling node Data transmission and processing problem, network side is helped timely and accurately to realize scheduling decision and data transmission and processing to CoMP user, Reduce influence of the backhaul time delays to CoMP central dispatchings.

CCN of the embodiment of the present invention is the data relay point of CoMP UE and core net, CoMP UE user plane downlink data Path be SGW-CCN-CoMP UE serving BS-UE.

During UE RRC connections foundation, UE service eNB knows CoMP UE types, if support CoMP transmission UE, eNB, to factors such as CoMP tenability situation and network side strategies, sentence according to UE CoMP tenability, current network Disconnected RAN (Radio Access Network, Radio Access Network) side user plane anchor for whether indicating the core net UE connections Point is CCN；Or established user plane anchor point in service eNB using prior art, it can be passed in triggering CoMP UE coordinate multipoints When defeated, it is CCN to change data transfer anchor point by processes such as switching, path handover request path switch request.

Control plane anchor point of the embodiment of the present invention remains as the service eNB of the UE；Or to reduce handover overhead, can also It is MME-CCN-UE by chain of command route diversion.

CoMP of embodiment of the present invention UE A/N feedback informations terminate in base station side, and re-transmissions of the CCN not to CoMP UE is carried out Scheduling and processing；The embodiment of the present invention selects data retransmission scheduling transmission node of the CoMP UE serving BSs as the UE.To subtract Few influence of the backhaul time delays to re-transmission, if the cooperative base station outside CCN selection serving BSs is CoMP UE transfer point, CCN Need when dispatching CoMP UE new data transmissions, except will notify CoMP UE schedule information, to serving BS, to go back simultaneously Need the MAC PDU of generation while be sent to the serving BS of the UE.

The unicast that the embodiment of the present invention can be dispatched CoMP UE by CCN or serving BS is non-CoMP transmission；By taking During business base station scheduling CoMP UE unicast, CCN needs to notify part data to be transmitted to serving BS；Serving BS The data message notified according to CCN, the schedule information obtained, CoMP UE unicast scheduling is carried out, and in a group bag MAC , it is necessary to which the data eNB identification notifications of data will have been transmitted to CCN after PDU.

CCN can be an independent logical functional entity in the embodiment of the present invention, can also be located in base station, can also It is a base station.

Based on same inventive concept, a kind of data of cooperative multipoint transmission central dispatching are additionally provided in the embodiment of the present invention Transmitting device, because the device solves the principle of problem and a kind of data transmission method phase of cooperative multipoint transmission central dispatching Seemingly, therefore the implementation of the device may refer to the implementation of method, repeats part and repeats no more.

Cooperative node CCN in center provided in an embodiment of the present invention, as shown in figure 11, including：

Data receipt unit 101, for obtaining treating for cooperative multipoint transmission user terminal CoMP UE from gateway SGW Transmit user face data；

Channel information acquisition unit 102, for belonging to the same all cooperation transmission points acquisition to cooperate in set from CCN All UE channel condition information CSI and non-CoMP UE user face data amount to be transmitted；

Scheduling unit 103, for the user face data amount to be transmitted and CSI according to all UE, the biography that cooperates with CCN scheduling Defeated point communication, perform the scheduled transmission of CoMP UE user face data.

CCN provided in an embodiment of the present invention includes processor and data transceiver interface on hardware, wherein：

During specific implementation, above-mentioned function is configured in processor, above-mentioned function is realized by processor.

CoMP UE serving BS will pass the identification notification of data to CCN.

The embodiment of the present invention also provides a kind of transfer point, and the transfer point is dispatched by center cooperative node CCN, such as Figure 12 institutes Show, including：

Reporting unit 201, for reporting all UE to be communicated with the cooperation transmission point channel condition information to CCN CSI and non-CoMP UE user face data amount to be transmitted；

Scheduled transmission unit 202, for by being communicated with CCN, determining cooperative multipoint transmission user terminal CoMP UE data The CoMP resources used are transmitted, CoMP UE user face data scheduled transmission is performed using CoMP resources, utilizes non-CoMP resources Perform non-CoMP UE user face data scheduled transmission.

Above-mentioned transfer point can include base station, via node (Relay), and base station therein includes macro base station (Macro), micro- Base station (Micro), femto base station (Pico), Home eNodeB or for femto base station (Femto) etc., and other possible adopt With the WAP (AP) of tdd mode.

Above-mentioned transfer point includes processor and data transceiver interface on hardware, wherein：

The processor is configured as：The channel status for reporting all UE to be communicated with the cooperation transmission point to CCN is believed Cease CSI and non-CoMP UE user face data amount to be transmitted；By being communicated with CCN, cooperative multipoint transmission user terminal is determined The CoMP resources that CoMP UE data transfers use, CoMP UE user face data scheduled transmission, profit are performed using CoMP resources Non- CoMP UE user face data scheduled transmission is performed with non-CoMP resources；

Specific implementation, by above-mentioned functional configuration in processor, above-mentioned function is realized by processor.

Preferably, the retransmission unit is additionally operable to：The synchronization of data is retransmitted to CoMP UE, determines that CCN dispatches CoMP UE serving BS carries out new data transmission to CoMP UE, and new data is received respectively with retransmitting data by two HARQ ACK/NACK feeds back.

Adhere to receiving unit, for receiving CoMP UE Attach Request message；

The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and 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

A kind of 1. data transmission system of cooperative multipoint transmission central dispatching, it is characterised in that including：

Gateway SGW, communicated with center cooperation point CCN, to treating for CCN cooperative transmission multicast communication user terminal CoMP UE Transmit user face data；

CCN, CoMP UE user face data to be transmitted is obtained from SGW, belong to the same all associations to cooperate in set from CCN Make the user face data amount to be transmitted that transfer point obtains all UE channel condition information CSI and non-CoMP UE, according to all UE User face data amount to be transmitted and CSI, communicate with the cooperation transmission point of CCN scheduling, execution CoMP UE user face data Scheduled transmission；

With the cooperation transmission point of the same set that cooperates of CCN, all UE CSI and non-is reported under the cooperation transmission point to CCN CoMP UE user face data amount to be transmitted, by being communicated with CCN, the CoMP resources that CoMP UE data transfers use are determined, CoMP UE user face data scheduled transmission is performed using CoMP resources, non-CoMP UE user is performed using non-CoMP resources Face data dispatch transmission.
2. a kind of data transmission method of cooperative multipoint transmission central dispatching applied to system described in claim 1, its feature It is, including：

Center cooperative node CCN obtains cooperative multipoint transmission user terminal CoMP UE user plane to be transmitted from gateway SGW Data；

CCN obtains all UE channel condition information CSI and non-from belonging to all cooperation transmission points of the same set that cooperates with it CoMP UE user face data amount to be transmitted；

CCN communicates with the cooperation transmission point of CCN scheduling according to all UE user face data amount to be transmitted and CSI, performs CoMP The scheduled transmission of UE user face data.
3. method as claimed in claim 2, it is characterised in that CCN communicates with the cooperation transmission point that it is dispatched, and performs CoMP The scheduled transmission of UE user face data, is specifically included：

CCN is according to all UE user face data amount size to be transmitted and CSI, when determining that CoMP UE carry out coordinated multipoint transmission, CoMP UE cooperation transmission point is selected, and generates CoMP UE schedule information and media access control protocol data unit MAC PDU；

CCN notifies the schedule information of generation and MAC PDU CoMP UE cooperation transmission point.
4. method as claimed in claim 3, it is characterised in that

When CoMP UE cooperation transmission point does not include CoMP UE serving BS, schedule information and MAC that CCN will additionally generate PDU notice CoMP UE serving BS.
5. method as claimed in claim 4, it is characterised in that

For carry out coordinated multipoint transmission CoMP UE, CoMP UE serving BS according to CoMP UE NACK NACK When feedback information determines to need the data to retransmit, CoMP resources are determined according to CCN schedule information, and utilize current non-CoMP moneys Source scheduling CoMP UE data retransmit.
6. method as claimed in claim 5, it is characterised in that CoMP UE serving BS utilizes current non-CoMP resources Dispatch CoMP UE data to retransmit, specifically include：

The serving BS that CoMP UE serving BS dispatches CoMP UE using CCN is carried out outside new data transmission to CoMP UE At the time of, scheduling CoMP UE data retransmit.
7. method as claimed in claim 5, it is characterised in that CoMP UE serving BS utilizes current non-CoMP resources Dispatch CoMP UE data to retransmit, specifically include：

CCN does not dispatch CoMP UE service at the time of possible CoMP UE serving BS scheduling CoMP UE data retransmit Base station carries out new data transmission to CoMP UE；Or

Before CCN receives the ACK feedbacks of CoMP UE serving BS to retransmitting data, do not dispatch CoMP UE serving BS to CoMP UE carry out new data transmission.
8. method as claimed in claim 4, it is characterised in that

For carry out coordinated multipoint transmission CoMP UE, CoMP UE serving BS according to CoMP UE NACK NACK When feedback information determines to need the data to retransmit, data are retransmitted to CoMP UE；

If CoMP UE serving BS retransmits the synchronization of data to CoMP UE, CCN scheduling CoMP UE serving BS to CoMP UE carry out new data transmission, then CoMP UE serving BS receives new data with retransmitting data respectively by two HARQ ACK/NACK feedback.
9. method as claimed in claim 2, it is characterised in that CCN communicates with the cooperation transmission point that it is dispatched, and performs CoMP The scheduled transmission of UE user face data, is specifically included：

CCN determines that CoMP UE carry out non-coordinated multipoint transmission according to all UE user face data amount size to be transmitted and CSI When, then：

CCN generation CoMP UE schedule information and media access control protocol data unit MAC PDU, the scheduling of generation is believed Breath and MAC PDU are sent to CoMP UE serving BS；Or

CCN generation CoMP UE schedule information, the CoMP UE of generation schedule information and user face data to be transmitted are sent Serving BS to CoMP UE；Or

User face data to be transmitted and non-cooperating transmission mark are sent to CoMP UE serving BS by CCN.
10. method as claimed in claim 9, it is characterised in that CCN generation CoMP UE schedule information, by the CoMP of generation UE schedule information and user face data to be transmitted are sent to CoMP UE serving BS, specifically include：

CCN generation CoMP UE schedule information, by the CoMP UE of generation schedule information and part user face data to be transmitted It is sent to CoMP UE serving BS；

CoMP UE serving BS generates MAC PDU according to CoMP UE schedule information and part data to be transmitted, carries out CoMP UE unicast；

CoMP UE serving BS will pass the identification notification of data to CCN.
11. method as claimed in claim 9, it is characterised in that CCN identifies user face data to be transmitted and non-cooperating transmission CoMP UE serving BS is sent to, is specifically included：

Non-cooperating transmission mark and part user face data to be transmitted are sent to CoMP UE serving BS by CCN；

CoMP UE serving BS is transmitted according to non-cooperating and identified, and determines CoMP UE schedule information, according to schedule information and Part data to be transmitted generation MAC PDU, carry out CoMP UE unicast；

CoMP UE serving BS will pass the identification notification of data to CCN.
12. method as claimed in claim 2, it is characterised in that

User plane downstream data paths of the CCN based on the SGW-CCN-CoMP UE serving BS-CoMP UE pre-established, from SGW obtains CoMP UE user face data to be transmitted.
13. method as claimed in claim 12, it is characterised in that the SGW-CCN-CoMP UE pre-established serving BS- CoMP UE user plane downstream data paths, are specifically included：

During CoMP UE initial radio resource control RRC connections are established, SGW-CCN-CoMP UE are established for CoMP UE Serving BS-CoMP UE user plane downstream data paths；Or

After CoMP UE establish RRC connections, passage path change mode is the service that CoMP UE establish SGW-CCN-CoMP UE Base station-CoMP UE user plane downstream data paths.
14. method as claimed in claim 13, it is characterised in that during CoMP UE Initial R RC connections are established, be CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE user plane downstream data paths, specifically include：

CoMP UE serving BS receives CoMP UE Attach Request message；

CoMP UE serving BS is defined as the user plane that CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE During downstream data paths, instruction core net establishes the S1-U connections of SGW-CCN-CoMP UE serving BS.
15. method as claimed in claim 14, it is characterised in that CoMP UE serving BS instruction core net establishes SGW- The S1-U connections of CCN-CoMP UE serving BS, are specifically included：

CoMP UE serving BS closes according to the cooperation set and CCN mapping of the serving BS comprising CoMP UE of storage System, by the interface between CCN, CCN is sent to by the relevant information of Attach Request message and CoMP UE；

The relevant information of Attach Request message and CoMP UE relevant information and CCN is transferred to mobility management entity by CCN MME, it is established that the S1-MME connections of MME-CCN-CoMP UE serving BS；

The S1-U connections of SGW-CCN-CoMP UE serving BS are established in MME triggerings.
16. method as claimed in claim 14, it is characterised in that CoMP UE serving BS instruction core net establishes SGW- The S1-U connections of CCN-CoMP UE serving BS, are specifically included：

CoMP UE serving BS sends the message for including EUTRAN cellular global identities ECGI corresponding to CCN, notice to MME User plane connection is switched between SGW and CCN by MME；

MME establishes the S1-U connections of SGW-CCN-CoMP UE serving BS according to notification triggers.
17. method as claimed in claim 16, it is characterised in that also include：

MME notice CCN CoMP UE cooperative multipoint transmission function activation.
18. method as claimed in claim 12, it is characterised in that during CoMP UE Initial R RC connections are established, be CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE user plane downstream data paths, specifically include：

CoMP UE serving BS receives CoMP UE Attach Request message；

The relevant information of the Attach Request message of reception and CoMP UE is sent to mobile management by CoMP UE serving BS Entity MME；

MME is defined as the user plane downstream data paths that CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE When, according to the cooperation set of the serving BS comprising CoMP UE of storage and CCN mapping relations, by EUTRAN corresponding to CCN ECGI corresponding to cellular global identity ECGI, substitution CoMP UE serving BS is simultaneously notified to SGW.
19. method as claimed in claim 18, it is characterised in that also include：

The serving BS that MME notice CoMP UE serving BS user plane downstream data paths are SGW-CCN-CoMP UE；

MME notice CCN CoMP UE cooperative multipoint transmission function activation, user plane downstream data paths are SGW-CCN- CoMP UE serving BS.
20. the method as described in claim 16 or 18, it is characterised in that also include：

MME sends chain of command path change instruction message to CoMP UE serving BS/CCN, and notice chain of command path change is MME-CCN-CoMP UE serving BS.
21. method as claimed in claim 12, it is characterised in that after CoMP UE establish RRC connections, passage path change Mode is the user plane downstream data paths for the serving BS-CoMP UE that CoMP UE establish SGW-CCN-CoMP UE, specific bag Include：

After CoMP UE establish RRC connections, CoMP UE serving BS determines that triggering CoMP UE carry out cooperative multipoint transmission When, passage path handoff procedure notice MME carries out user plane downstream data paths switching；

MME is according to notice, the serving BS that change user plane downstream data paths are SGW-CCN-CoMP UE.
22. method as claimed in claim 21, it is characterised in that also include：

CoMP UE serving BS identifies CoMP UE and cooperative multipoint transmission request is sent to CCN；

CoMP UE serving BS receives the cooperative multipoint transmission response of CCN feedbacks.
23. method as claimed in claim 21, it is characterised in that CoMP UE serving BS determines that triggering CoMP UE are carried out Cooperative multipoint transmission, specifically include：

CoMP UE serving BS reports according to CoMP UE measurement, it is determined whether triggering CoMP UE carry out coordinate multipoint biography It is defeated；Or

CoMP UE serving BS is according to CoMP UE positional information, it is determined whether triggering CoMP UE carry out coordinate multipoint biography It is defeated；Or

When CoMP UE serving BS receives the triggering CoMP UE progress cooperative multipoint transmission notices sent during CCN activation, really Surely CoMP UE are triggered and carry out cooperative multipoint transmission.
24. method as claimed in claim 23, it is characterised in that

The notice of triggering CoMP UE progress cooperative multipoint transmissions is sent when CCN is activated to CoMP UE serving BS；Or

CSI that CCN reports according to each cooperation transmission point, CoMP UE positional informations, it is determined that triggering CoMP UE carry out coordinate multipoint Transmission, and during CCN activation, CCN sends the notice of triggering CoMP UE progress cooperative multipoint transmissions to CoMP UE serving BS.
25. the method as described in claim 23 or 24, it is characterised in that

When CoMP UE serving BS or CCN determines no longer to dispatch CoMP UE cooperative multipoint transmission, interaction deactivates CoMP UE cooperative multipoint transmission function, and passage path change mode be CoMP UE establish SGW-CoMP UE serving BS- CoMP UE user plane downstream data paths.
26. method as claimed in claim 12, it is characterised in that after CoMP UE establish RRC connections, passage path change Mode is the user plane downstream data paths for the serving BS-CoMP UE that CoMP UE establish SGW-CCN-CoMP UE, including：

After CoMP UE establish RRC connections, in cell switched, CoMP UE destination service base station passage path switched Cheng Tongzhi MME carry out user plane downstream data paths switching；

MME is according to notice, the serving BS that change user plane downstream data paths are SGW-CCN-CoMP UE.
27. claim 21~24,26 it is any as described in method, it is characterised in that CoMP UE serving BS with CCN not When being integrated in same node, further comprise：

RRC between COMP UE is connected by CoMP UE serving BS triggering, switches to the RRC between COMP UE and CCN Connection.
28. method as claimed in claim 2, it is characterised in that CCN is CoMP UE serving BS, the SGW- pre-established CCN-CoMP UE serving BS-CoMP UE user plane downstream data paths, are specifically included：

CoMP UE former serving BS triggering CoMP UE carry out initiating handoff procedure during cooperative multipoint transmission, by CoMP UE's Serving BS switches to CCN.
29. method as claimed in claim 28, it is characterised in that

CoMP UE former serving BS reports according to CoMP UE measurement, it is determined whether triggering CoMP UE carry out coordinate multipoint Transmission；Or

CoMP UE former serving BS is according to CoMP UE positional information, it is determined whether triggering CoMP UE carry out coordinate multipoint Transmission；Or

When CoMP UE former serving BS receives the triggering CoMP UE progress cooperative multipoint transmission notices sent during CCN activation, It is determined that triggering CoMP UE carry out cooperative multipoint transmission.
30. method as claimed in claim 29, it is characterised in that

The notice of triggering CoMP UE progress cooperative multipoint transmissions is sent when CCN is activated to CoMP UE serving BS；Or

CSI that CCN reports according to each cooperation transmission point, CoMP UE positional informations, it is determined that triggering CoMP UE carry out coordinate multipoint Transmission, and during CCN activation, CCN sends the notice of triggering CoMP UE progress cooperative multipoint transmissions to CoMP UE serving BS.
A kind of 31. data transmission method of cooperative multipoint transmission central dispatching, it is characterised in that including：

Cooperation transmission point reports the channel condition information CSI of all UE under the CCN and non-cooperating multicast communication user whole to CCN Hold CoMP UE user face data amount to be transmitted；

Cooperation transmission point is determined the CoMP resources that CoMP UE data transfers use, held using CoMP resources by being communicated with CCN Row CoMP UE user face data scheduled transmission, the user face data that non-CoMP UE are performed using non-CoMP resources dispatch biography It is defeated.
32. method as claimed in claim 31, it is characterised in that cooperation transmission point performs CoMP UE's using CoMP resources User face data scheduled transmission, is specifically included：

Receive CCN and determine that CoMP UE carry out the schedule information and medium education of the CoMP UE of transmission during coordinated multipoint transmission Protocol Data Unit MAC PDU；

The CoMP resources that CoMP UE data transfers use are determined according to schedule information, CoMP resource transmissions are utilized on PDSCH MAC PDU。
33. method as claimed in claim 31, it is characterised in that CCN scheduling CoMP UE carry out cooperative multipoint transmission, described Cooperation transmission point is CoMP UE serving BS, in addition to：

When CoMP UE serving BS determines to need the data to retransmit according to CoMP UE NACK NACK feedback informations, and profit Retransmitted with current CoMP scheduling of resource CoMP UE data.
34. method as claimed in claim 33, it is characterised in that CoMP UE serving BS utilizes current CoMP resources Dispatch CoMP UE data to retransmit, specifically include：

The serving BS that CoMP UE serving BS dispatches CoMP UE using CCN is carried out outside new data transmission to CoMP UE At the time of, scheduling CoMP UE data retransmit.
35. method as claimed in claim 33, it is characterised in that also include：

If CoMP UE serving BS retransmits the synchronization of data to CoMP UE, CCN scheduling CoMP UE service base is determined Stand and carry out new data transmission to CoMP UE, CoMP UE serving BS receives new data with retransmitting number respectively by two HARQ According to ACK/NACK feed back.
36. method as claimed in claim 31, it is characterised in that CCN scheduling CoMP UE carry out non-cooperating multicast communication, institute The serving BS that cooperation transmission point is CoMP is stated, the user face data that cooperation transmission point performs CoMP UE using CoMP resources is adjusted Degree transmission, is specifically included：

The schedule information and media access control protocol data unit MAC PDU for the CoMP UE that CCN is sent are received, according to scheduling Information determines the CoMP resources that CoMP UE data transfers use, and CoMP resource transmission MAC PDU are utilized on PDSCH；Or

According to the CCN CoMP UE sent schedule information and user face data to be transmitted generation MAC PDU, according to schedule information The CoMP resources that CoMP UE data transfers use are determined, CoMP resource transmission MAC PDU are utilized on PDSCH；Or

User face data to be transmitted and the non-cooperating transmission mark that CCN is sent are received, determines that CoMP UE carry out non-CoMP transmission, In resource outside the CoMP resources determined by CCN schedule informations, determine that CoMP UE carry out the CoMP that non-CoMP transmission uses Resource, MAC PDU are generated according to the CoMP resources of determination, the CoMP resource transmission MAC PDU determined are utilized on PDSCH.
37. method as claimed in claim 31, it is characterised in that the cooperation transmission point is CoMP serving BS, is also wrapped Include：

CoMP UE serving BS receives CoMP UE Attach Request message；

CoMP UE serving BS is defined as the user plane that CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE During downstream data paths, instruction core net establishes the S1-U connections of SGW-CCN-CoMP UE serving BS.
38. method as claimed in claim 37, it is characterised in that CoMP UE serving BS instruction core net establishes SGW- The S1-U connections of CCN-CoMP UE serving BS, are specifically included：

CoMP UE serving BS closes according to the cooperation set and CCN mapping of the serving BS comprising CoMP UE of storage System, by the interface between CCN, CCN is sent to by the relevant information of Attach Request message and CoMP UE, and will be adhered to by CCN please The relevant information of message and CoMP UE and CCN relevant information is asked to be transferred to mobility management entity MME, it is established that MME- The S1-MME connections of CCN-CoMP UE serving BS；Or

CoMP UE serving BS sends the message for including EUTRAN cellular global identities ECGI corresponding to CCN, notice to MME User plane connection is switched between SGW and CCN by MME, establishes SGW-CCN-CoMP UE clothes according to notification triggers by MME The S1-U connections of business base station.
39. method as claimed in claim 31, it is characterised in that the cooperation transmission point is CoMP serving BS, is also wrapped Include：

After CoMP UE establish RRC connections, CoMP UE serving BS determines that triggering CoMP UE carry out cooperative multipoint transmission When, passage path handoff procedure notice MME carries out user plane downstream data paths switching, by change user plane downstream data paths For SGW-CCN-CoMP UE serving BS.
40. method as claimed in claim 39, it is characterised in that also include：

CoMP UE serving BS identifies CoMP UE and cooperative multipoint transmission request is sent to CCN；

CoMP UE serving BS receives the cooperative multipoint transmission response of CCN feedbacks.
41. method as claimed in claim 39, it is characterised in that CoMP UE serving BS determines that triggering CoMP UE are carried out Cooperative multipoint transmission, specifically include：

CoMP UE serving BS reports according to CoMP UE measurement, it is determined whether triggering CoMP UE carry out coordinate multipoint biography It is defeated；Or

CoMP UE serving BS is according to CoMP UE positional information, it is determined whether triggering CoMP UE carry out coordinate multipoint biography It is defeated；Or

When CoMP UE serving BS receives the triggering CoMP UE progress cooperative multipoint transmission notices sent during CCN activation, really Surely CoMP UE are triggered and carry out cooperative multipoint transmission.
42. the method as described in claim 37~41 is any, it is characterised in that CoMP UE serving BS does not integrate with CCN In same node, further comprise：

RRC between COMP UE is connected by CoMP UE serving BS triggering, switches to the RRC between COMP UE and CCN Connection.
A kind of 43. center cooperative node CCN, it is characterised in that including：

Data receipt unit, for obtaining cooperative multipoint transmission user terminal CoMP UE user to be transmitted from gateway SGW Face data；

Channel information acquisition unit, for belonging to the same all UE of all cooperation transmission points acquisition to cooperate in set from CCN Channel condition information CSI and non-CoMP UE user face data amount to be transmitted；

Scheduling unit, for the user face data amount to be transmitted and CSI according to all UE, lead to the cooperation transmission point of CCN scheduling Letter, perform the scheduled transmission of CoMP UE user face data.
44. CCN as claimed in claim 43, it is characterised in that scheduling unit communicates with the cooperation transmission point that CCN is dispatched, and holds The scheduled transmission of row CoMP UE user face data, is specifically included：

CCN is according to all UE user face data amount size to be transmitted and CSI, when determining that CoMP UE carry out coordinated multipoint transmission, CoMP UE cooperation transmission point is selected, and generates CoMP UE schedule information and media access control protocol data unit MAC PDU；

CCN notifies the schedule information of generation and MAC PDU CoMP UE cooperation transmission point.
45. CCN as claimed in claim 44, it is characterised in that do not include CoMP UE's in CoMP UE cooperation transmission point During serving BS, the serving BS for schedule information and MAC PDU notice the CoMP UE that scheduling unit will additionally generate.
46. CCN as claimed in claim 45, it is characterised in that

Scheduling unit does not dispatch CoMP UE at the time of possible CoMP UE serving BS scheduling CoMP UE data retransmit Serving BS to CoMP UE carry out new data transmission；Or

Before scheduling unit receives ACK feedbacks of the CoMP UE serving BS to retransmitting data, CoMP UE service is not dispatched Base station carries out new data transmission to CoMP UE.
47. CCN as claimed in claim 43, it is characterised in that scheduling unit communicates with the cooperation transmission point that CCN is dispatched, and holds The scheduled transmission of row CoMP UE user face data, is specifically included：

According to all UE user face data amount size to be transmitted and CSI, when determining that CoMP UE carry out non-coordinated multipoint transmission, Then：

Generate CoMP UE schedule information and media access control protocol data unit MAC PDU, by the schedule information of generation and MAC PDU are sent to CoMP UE serving BS；Or

CoMP UE schedule information is generated, the CoMP UE of generation schedule information and user face data to be transmitted are sent to CoMP UE serving BS；Or

User face data to be transmitted and non-cooperating transmission mark are sent to CoMP UE serving BS.
48. CCN as claimed in claim 47, it is characterised in that scheduling unit generation CoMP UE schedule information, will generate CoMP UE schedule information and user face data to be transmitted be sent to CoMP UE serving BS, specifically include：

CCN generation CoMP UE schedule information, by the CoMP UE of generation schedule information and part user face data to be transmitted It is sent to CoMP UE serving BS；

CoMP UE serving BS generates MAC PDU according to CoMP UE schedule information and part data to be transmitted, carries out CoMP UE unicast；

CoMP UE serving BS will pass the identification notification of data to CCN.
49. CCN as claimed in claim 47, it is characterised in that scheduling unit passes user face data to be transmitted and non-cooperating It is defeated to identify the serving BS for being sent to CoMP UE, specifically include：

Non-cooperating transmission mark and part user face data to be transmitted are sent to CoMP UE serving BS by CCN；

CoMP UE serving BS is transmitted according to non-cooperating and identified, and determines CoMP UE schedule information, according to schedule information and Part data to be transmitted generation MAC PDU, carry out CoMP UE unicast；

CoMP UE serving BS will pass the identification notification of data to CCN.
50. CCN as claimed in claim 43, it is characterised in that data receipt unit is based on the SGW-CCN- pre-established CoMP UE serving BS-CoMP UE user plane downstream data paths, CoMP UE user plane number to be transmitted is obtained from SGW According to.
51. CCN as claimed in claim 50, it is characterised in that also include：

Adhere to message reception units, the Attach Request message and CoMP UE phase that the serving BS for receiving CoMP UE is sent Close information；

Dispatch Unit, for the relevant information of Attach Request message and CoMP UE relevant information and CCN to be transferred into shifting Mobility management entity MME, it is established that the S1-MME connections of MME-CCN-CoMP UE serving BS.
52. CCN as claimed in claim 50, it is characterised in that also include：

Notification unit, coordinate multipoint biography is carried out for sending triggering CoMP UE to CoMP UE serving BS when CCN activates Defeated notice；Or reported according to each cooperation transmission point CSI, CoMP UE positional informations, it is determined that triggering CoMP UE assisted Make multicast communication, and during CCN activation, send triggering CoMP UE to CoMP UE serving BS and carry out the logical of cooperative multipoint transmission Know.
53. a kind of cooperation transmission point, the cooperation transmission point is dispatched by center cooperative node CCN, it is characterised in that including：

Reporting unit, for reporting all UE to be communicated with the cooperation transmission point channel condition information CSI and non-to CCN CoMP UE user face data amount to be transmitted；

Scheduled transmission unit, for by being communicated with CCN, determining that cooperative multipoint transmission user terminal CoMP UE data transfers make CoMP resources, CoMP UE user face data scheduled transmission is performed using CoMP resources, performed using non-CoMP resources non- CoMP UE user face data scheduled transmission.
54. cooperation transmission point as claimed in claim 53, it is characterised in that scheduled transmission unit is performed using CoMP resources CoMP UE user face data scheduled transmission, is specifically included：

Receive CCN and determine that CoMP UE carry out the schedule information and medium education of the CoMP UE of transmission during coordinated multipoint transmission Protocol Data Unit MAC PDU；

The CoMP resources that CoMP UE data transfers use are determined according to schedule information, CoMP resource transmissions are utilized on PDSCH MAC PDU。
55. cooperation transmission point as claimed in claim 53, it is characterised in that CCN scheduling CoMP UE carry out coordinate multipoint biography Defeated, the transfer point is CoMP UE serving BS, in addition to：

Retransmission unit, during for determining to need the data to retransmit according to CoMP UE NACK NACK feedback informations, using current CoMP scheduling of resource CoMP UE data retransmit.
56. cooperation transmission point as claimed in claim 55, it is characterised in that retransmission unit utilizes current CoMP scheduling of resource CoMP UE data retransmit, and specifically include：

Using CCN scheduling CoMP UE serving BS to CoMP UE carry out outside new data transmission at the time of, dispatch CoMP UE Data retransmit.
57. cooperation transmission point as claimed in claim 55, it is characterised in that the retransmission unit is additionally operable to：

The synchronization of data is retransmitted to CoMP UE, determines that CCN scheduling CoMP UE serving BS is newly counted to CoMP UE According to transmission, new data is received respectively by two HARQ and is fed back with retransmitting the ACK/NACK of data.
58. cooperation transmission point as claimed in claim 53, it is characterised in that CCN scheduling CoMP UE carry out non-cooperating multiple spot biography Defeated, the transfer point is CoMP serving BS, and scheduled transmission unit performs CoMP UE user face data using CoMP resources Scheduled transmission, specifically include：

The schedule information and media access control protocol data unit MAC PDU for the CoMP UE that CCN is sent are received, according to scheduling Information determines the CoMP resources that CoMP UE data transfers use, and CoMP resource transmission MAC PDU are utilized on PDSCH；Or

According to the CCN CoMP UE sent schedule information and user face data to be transmitted generation MAC PDU, according to schedule information The CoMP resources that CoMP UE data transfers use are determined, CoMP resource transmission MAC PDU are utilized on PDSCH；Or

User face data to be transmitted and the non-cooperating transmission mark that CCN is sent are received, determines that CoMP UE carry out non-CoMP transmission, In resource outside the CoMP resources determined by CCN schedule informations, determine that CoMP UE carry out the CoMP that non-CoMP transmission uses Resource, MAC PDU are generated according to the CoMP resources of determination, the CoMP resource transmission MAC PDU determined are utilized on PDSCH.
59. cooperation transmission point as claimed in claim 53, it is characterised in that the cooperation transmission point is CoMP service base Stand, in addition to：

Adhere to receiving unit, for receiving CoMP UE Attach Request message；

Indicating member, for be defined as CoMP UE establish SGW-CCN-CoMP UE serving BS-CoMP UE user plane it is descending During data path, instruction core net establishes the S1-U connections of SGW-CCN-CoMP UE serving BS.
60. cooperation transmission point as claimed in claim 59, it is characterised in that indicating member instruction core net establishes SGW-CCN- The S1-U connections of CoMP UE serving BS, are specifically included：

According to the cooperation set of the serving BS comprising CoMP UE of storage and CCN mapping relations, pass through connecing between CCN Mouthful, the relevant information of Attach Request message and CoMP UE is sent to CCN, by CCN by Attach Request message and CoMP UE Relevant information and CCN relevant information are transferred to mobility management entity MME, it is established that MME-CCN-CoMP UE service base The S1-MME connections stood；Or

The message for including EUTRAN cellular global identities ECGI corresponding to CCN is sent to MME, notice MME connects user plane It is switched between SGW and CCN, establishes the S1-U connections of SGW-CCN-CoMP UE serving BS according to notification triggers by MME.
61. cooperation transmission point as claimed in claim 53, it is characterised in that the cooperation transmission point is CoMP service base Stand, in addition to：

Indicating member is changed, for after CoMP UE establish RRC connections, it is determined that triggering CoMP UE progress cooperative multipoint transmissions When, passage path handoff procedure notice MME carries out user plane downstream data paths switching, by change user plane downstream data paths For SGW-CCN-CoMP UE serving BS.
62. cooperation transmission point as claimed in claim 53, it is characterised in that the cooperation transmission point is CoMP service base Stand, in addition to：

CoMP indicating members, for by CoMP UE identify and cooperative multipoint transmission request be sent to CCN；

CoMP responds receiving unit, for receiving the cooperative multipoint transmission response of CCN feedbacks.
63. cooperation transmission point as claimed in claim 61, it is characterised in that change indicating member determines that triggering CoMP UE enter Row cooperative multipoint transmission, is specifically included：

Reported according to CoMP UE measurement, it is determined whether triggering CoMP UE carry out cooperative multipoint transmission；Or

According to CoMP UE positional information, it is determined whether triggering CoMP UE carry out cooperative multipoint transmission；Or

When receiving the triggering CoMP UE progress cooperative multipoint transmission notices sent during CCN activation, it is determined that triggering CoMP UE are carried out Cooperative multipoint transmission.
64. the cooperation transmission point as described in claim 57~63 is any, it is characterised in that CoMP UE serving BS and CCN When being not integrated in same node, further comprise：

RRC switch units, for triggering the RRC connections between CoMP UE serving BS and COMP UE, switch to COMP RRC connections between UE and CCN.