CN102264105B - A kind of multi-point cooperative transmission method and device - Google Patents
A kind of multi-point cooperative transmission method and device Download PDFInfo
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Abstract
The invention discloses a kind of multi-point cooperative transmission method and device, during for solving multi-point cooperative transmission Combined Treatment, the problem of collaborative user cannot be dispatched in multiple community in unified resource.The present invention, for the Equations of The Second Kind user jointly being carried out transfer of data by multiple node, forms collaborative being integrated on special clean culture time quantum as it carries out transfer of data by multiple node; Each node in same collaborative set adopts identical configuration mode to configure PDCCH on described special clean culture time quantum; In described special clean culture time quantum, the CSI-RS in collaborative set carries out orthogonal design, and on the Resource Unit conflicted with the CSI-RS of adjacent cell, punches or do not put data to data.Enable multiple minizone carry out Combined Treatment by the present invention, obtain collaborative merging gain, improve throughput of system and spectrum efficiency.
Description
Technical field
The present invention relates to the communications field, concrete, relate to a kind of multi-point cooperative transmission method and device.
Background technology
Along with senior Long Term Evolution (Long-Term EvolutionAdvanced, LTE-A) proposition of demand, people more and more pay attention to cell average spectral efficiency and cell edge spectrum efficiency, comparatively speaking, the spectrum efficiency of cell edge is paid close attention to by people, this is mainly because the provisional capital up and down of lte-a system is with OFDM (Orthogonal Frequency Division Multiplexing, OFDM) (or with certain distortion of OFDM) is for the frequency division systems of basic multiple access multiplexing mode, with traditional with code division multiple access CDMA (Code-Division Multiple Access, CDMA) wireless communication system for basic multiple access multiplexing mode is different, lte-a system does not have processing gain, Intra-cell is because complete frequency division is orthogonal, so almost there is no interference problem, but it is relatively thorny in the interference process at cell edge place.Cell Edge User is more or less the same apart from the antenna distance of multiple neighbor cell, is vulnerable to interference most and affects performance.If the user that the different antennae of multiple community is cell edge can be utilized to provide service simultaneously, then not only avoid the interference of minizone, the information that multiple antennas increases space dimension can also be given full play to, the capacity of system and performance are increased dramatically.
Cooperative multipoint transmission is proposed in this context just.Cooperative multipoint transmission uses the user that the different antennae of multiple community is cell edge to provide service simultaneously, so not only avoid the interference of minizone, simultaneously owing to adopting the technology of multiple antennas, the information that multiple antennas increases space dimension can be given full play to, the capacity of system and performance are significantly promoted.Certain cooperative multipoint transmission is also not limited to minizone, can use equally in community, because the spatial dispersion that is transmitted in of user profile is multiple transfer point, these transfer points are worked in coordination again, can realize power, the best configuration of frequency and space resources, thus the suppression to interference can be realized, link performance that is reliable and high power capacity can be realized again.
Current multi-point cooperative transmission implementation mainly contains two kinds:
1) Combined Treatment (Joint Processing, JP)
Be that user carries out joint transmission by multiple nodes of the Serving cell comprising user, these nodes, when identical, frequently, resource carry out downlink transfer to user, and user receives the data from multiple node, carries out merging treatment, obtains diversity gain.
2) cooperative scheduling/collaborative wave beam (Coordinated scheduling and/or beamforming, CS/CB)
Be that user carries out cooperative scheduling by multiple nodes of the Serving cell comprising user, only by the Serving cell of user, downlink transfer is carried out to user, other cooperative nodes are carried out interference avoided by cooperative scheduling/collaborative beam allocation, realize AF panel, improve user performance.
CS/CB mode and Long Term Evolution protocol version 8 (LTE Release 8, R8) the interference coordination thought in is consistent, do not relate to multicast communication, and JP mode needs multiple node jointly to transmit user, therefore CS/CB mode to the requirement of system lower than JP mode.
JP mode faces following problem in realization:
1) Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) of each cooperation district takies symbolic number possibility difference, how to ensure that each cooperation district uses identical running time-frequency resource for user's downlink transfer;
2) how common reference symbol (Common reference signal, CRS), channel measurement pilot frequency (CSI-RS) difference of each cooperation district, process the collision problem of user service data and these pilot tones.
Only solve this two problems, the JP of multiple minizone just can carry out.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of multi-point cooperative transmission method and device, during for solving multi-point cooperative transmission Combined Treatment, the problem of collaborative user cannot be dispatched in multiple community in unified resource, for achieving the above object, technical scheme of the present invention is achieved in that
A kind of multi-point cooperative transmission method, the method comprises:
For the first kind user only being carried out transfer of data by individual node, on any clean culture time quantum by its service node independently for it carries out transfer of data;
For the Equations of The Second Kind user jointly being carried out transfer of data by multiple node, only on special clean culture time quantum by multiple node for it carries out transfer of data;
Described special clean culture time quantum is the time quantum of MBSFN, and described time quantum is time slot, subframe or radio frames.
Further, described first kind user be independently dispatched by service node, the miscoordination user of transmitting or by service node individual transmission, by the CS/CB user of collaborative set combined dispatching; Described Equations of The Second Kind user is by the JP collaborative user of collaborative set joint transmission, combined dispatching.
Further, the multiple nodes carrying out transfer of data for described Equations of The Second Kind user comprise service node and cooperative nodes, the part being made up of collaborative set or collaborative set described service node and cooperative nodes carries out transfer of data for described Equations of The Second Kind user jointly, and the hybrid mode that described collaborative set combines according to UE-specific mode or Cell-specific mode or above-mentioned two kinds of modes is determined.
Further, for PDCCH configures 1,2,3 or 4 OFDM symbol in described special clean culture time quantum, or in Long Term Evolution protocol version 8 MBSFN time quantum be the OFDM symbol number of PDCCH configuration basis on increase the mapping for PDCCH of 1,2 or 3 OFDM symbol again.
Further, in described special clean culture time quantum, from fixing OFDM symbol position, carry out the mapping of PDSCH, described fixing OFDM symbol position is the 2nd, the 3rd, the 4th or the 5th.
Further, adopt static configuration mode or semi-static configuration mode in described special clean culture time quantum for PDCCH configures OFDM symbol.
Further, each node adopts identical configuration mode to configure PDCCH on described special clean culture time quantum, and described identical configuration mode comprises the position of OFDM symbol and number that map for PDCCH and the initial OFDM symbol position mapped for PDSCH.
Further, in described special clean culture time quantum, CRS is only configured in front 2 OFDM symbol, and when resource mapping, for Equations of The Second Kind user, its service node carries out resource mapping according to the CSI-RS position relationship of this node; Each cooperative nodes carries out resource mapping according to the CSI-RS position relationship of service node, when collaborative user's data are conflicted with the CSI-RS of this community, punches to the data of collaborative user.
Further, in described special clean culture time quantum, the CSI-RS in collaborative set carries out orthogonal design, and on the Resource Unit conflicted with the CSI-RS of adjacent cell, punches or do not put data to data.
Further, in described special clean culture time quantum, be preferably Equations of The Second Kind user and carry out scheduling of resource.
Further, work in coordination with each node in set at described special clean culture time quantum and adopt identical circulating prefix-length.
Further, when carrying out transfer of data for Equations of The Second Kind user, each node preferentially adopts identical antenna configuration and polarization mode.
Based on said method, the present invention also proposes a kind of multi-point cooperative transmission device, and this device comprises:
Resource distribution and mapping block, for for only carrying out the first kind user of transfer of data by individual node and jointly carrying out Equations of The Second Kind user unit setup time of transfer of data by multiple node and carry out resource mapping; Described time quantum is time slot, subframe or radio frames;
For first kind user, by the resource distribution of its service node and mapping block independent on any clean culture time quantum for it carries out resource distribution and mapping; For Equations of The Second Kind user, carry out resource distribution and mapping for it at special clean culture time quantum by the resource distribution of each node and mapping block; Described special clean culture time quantum is the time quantum of MBSFN;
Data transmission unit, for carrying out transfer of data for first kind user and Equations of The Second Kind user;
For first kind user, on any clean culture time quantum by the data transmission unit of its service node independently for it carries out transfer of data; For Equations of The Second Kind user, only on special clean culture time quantum, carry out synergistic data transmission by the data transmission unit of multiple node for it.
Further, the multiple nodes carrying out transfer of data for described Equations of The Second Kind user comprise service node and cooperative nodes, a part for collaborative set or collaborative set is made up of described service node and cooperative nodes, jointly carry out transfer of data for described user by the data transmission unit in described collaborative set, described collaborative set is according to determining based on UE-specific mode or based on the hybrid mode that Cell-specific mode or above-mentioned two kinds of modes combine.
Further, described resource distribution and mapping block, for PDCCH configures 1,2,3 or 4 OFDM symbol in described special clean culture time quantum, or in Long Term Evolution protocol version 8 MBSFN time quantum be the OFDM symbol number of PDCCH configuration basis on increase the mapping for PDCCH of 1,2 or 3 OFDM symbol again.
Further, described resource distribution and mapping block, in described special clean culture time quantum, from fixing OFDM symbol position configuration PDSCH, described fixing OFDM symbol position is the 2nd, the 3rd, the 4th or the 5th.
Further, in each node in same collaborative set, described resource distribution and mapping block adopt identical configuration mode to configure PDCCH on described special clean culture time quantum, and described configuration mode comprises the position of OFDM symbol and number that map for PDCCH and the initial OFDM symbol position mapped for PDSCH.
Further, described resource distribution and mapping block, front 2 OFDM symbol configuration CRS only in described special clean culture time quantum; When resource mapping, for Equations of The Second Kind user, the resource distribution of its service node and mapping block carry out resource mapping according to the CSI-RS position relationship of this node; The resource distribution of each cooperative nodes and mapping block carry out resource mapping according to the CSI-RS position relationship of service node, when collaborative user's data are conflicted with the CSI-RS of this community, punch or do not put data to the data of collaborative user.
Described resource distribution and the CSI-RS of mapping block to the described special clean culture time quantum in collaborative set carry out orthogonal design.
Further, when carrying out transfer of data for Equations of The Second Kind user, in described special clean culture time quantum, adopt identical circulating prefix-length; Each node in described collaborative set preferentially adopts identical antenna configuration and polarization mode.
By the method adopting the present invention to provide, achieve following effect:
The present invention, when being configured for Equations of The Second Kind user, when collaborative user's data are conflicted with the CSI-RS of cooperation district, destroying data or does not send out data, does not affect the reception to CRS, CSI-RS when collaborative user carries out channel measurement completely;
The CSI-RS orthogonality of multiple minizone also supports the expansion of measuring from single cell measurement to multiple cell;
By distinguishing in clean culture time quantum and the different configurations on special clean culture time quantum, miscoordination user not being affected, achieving the forward compatibility to R8.
In a word, by the present invention, enable multiple minizone carry out Combined Treatment, obtain collaborative merging gain, improve throughput of system and spectrum efficiency.
Accompanying drawing explanation
Fig. 1 is the cell topology figure of the embodiment of the present invention 1;
Fig. 2 is the subframe structure figure of the embodiment of the present invention 1,2;
Fig. 3 is subframe 7,8 structure 1 schematic diagram in the embodiment of the present invention 1;
Fig. 4 is the cell topology figure of the embodiment of the present invention 2;
Fig. 5 is the cell topology figure of the embodiment of the present invention 3;
Fig. 6 is the subframe structure figure of the embodiment of the present invention 3;
Fig. 7 is multi-point cooperative transmission structure drawing of device of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, by the following examples also with reference to accompanying drawing, the present invention is described in more detail.
User in system is divided into two classes by the present invention: be respectively first kind user and Equations of The Second Kind user.
First kind user: the user only being carried out transfer of data by individual node (service node); Such user can be the miscoordination user only independently being dispatched by service node, transmit, as R8 user; Also can be only by service node individual transmission, by the CS/CB collaborative user of collaborative set combined dispatching;
Equations of The Second Kind user: the user jointly being carried out transfer of data by multiple node, such user refers to the JP collaborative user by collaborative set joint transmission, combined dispatching.Here multiple nodes specifically comprise service node and several cooperative nodes, and they form a part for collaborative set or collaborative set.Can according to determining (UE-specific) mode based on user or determining that hybrid mode that (Cell-specific) mode or this two kinds of modes combine determines collaborative set based on community, the node in collaborative set can be radio frequency unit, trunking etc. in individual cell or community.
Wherein, to first kind user, can on any clean culture time quantum by its service node independently for it carries out the transmission of data, described any clean culture time quantum comprises: common clean culture time quantum, special clean culture time quantum.To Equations of The Second Kind user, can be only that it carries out the transmission of data by collaborative set on the clean culture time quantum that some is special.
Special clean culture time quantum of the present invention is the transmission time unit of Multicast Broadcast Single Frequency Network (MBSFN), and described time quantum can be time slot, subframe or radio frames.
In current LTE protocol, MBSFN time quantum is by MCE (Multi-cell/multicastCoordination Entity, multi-cell cooperating entity) configure, MBSFN time quantum in the present invention is not limited to MCE configuration, also can be base station configuration, R8 user thinks that these MBSFN time quantums are for carrying multicast service, and R10 or R11 or R12 user's identifiable design go out these MBSFN time quantums carrying unicast service, thus blind Detecting is carried out to the PDCCH symbol of these MBSFN time quantums, obtain downstream grants, and then understand this user PDSCH resource allocation information.
In the specific embodiment of the invention, for PDCCH configures the OFDM symbol of fixed number in special clean culture time quantum, preferred configuration 1,2,3 or 4 OFDM symbol, or in LTE Release8 MBSFN time quantum be the OFDM symbol number of PDCCH configuration basis on configure the mapping of OFDM symbol for PDCCH of fixed number again, preferably can increase the mapping for PDCCH of 1,2 or 3 OFDM symbol.
In the specific embodiment of the invention, in special clean culture time quantum, carry out the mapping of PDSCH from fixing OFDM symbol position, OFDM symbol fixing here can be the 2nd, the 3rd, the 4th or the 5th OFDM symbol.
In the specific embodiment of the invention, adopt static configuration mode or semi-static configuration mode in described special clean culture time quantum for PDCCH configures OFDM symbol.
In the specific embodiment of the invention, in order to ensure that each cooperation district uses identical running time-frequency resource for user's downlink transfer, each node (comprising service node and cooperative nodes) in same collaborative set adopts identical configuration mode to configure PDCCH on described special clean culture time quantum, the initial OFDM symbol position that described identical configuration mode comprises the position of OFDM symbol that maps for PDCCH and number, maps for PDSCH.
In the specific embodiment of the invention, in described special clean culture time quantum, CRS is only configured in front 2 OFDM symbol, and when resource mapping, for Equations of The Second Kind user, its service node carries out resource mapping according to the CSI-RS position relationship of this node; Each cooperative nodes carries out resource mapping according to the CSI-RS position relationship of service node, when collaborative user's data are conflicted with the CSI-RS of this community, punches to the data of collaborative user; User (miscoordination user) for this community carries out resource mapping according to the CSI-RS position relationship in this community.
In the specific embodiment of the invention, the CSI-RS in collaborative set carries out orthogonal design, and on the Resource Unit conflicted with adjacent cell CSI-RS, punches or do not put data to data.
Preferably, the present invention, in special clean culture time quantum, is preferably Equations of The Second Kind user and carries out scheduling of resource.
Preferably, when each node carries out downlink transfer in described collaborative set, in special clean culture time quantum, identical circulating prefix-length is adopted.
Preferably, each node in described collaborative set preferably adopts identical antenna configuration and polarization mode.
Example 1:
In this embodiment, described special clean culture time quantum is MBSFN sub-frame, be that PDCCH configures the OFDM symbol of fixed number in the MBSFN subframe, or in R8 MBSFN sub-frame be the OFDM symbol number of PDCCH configuration basis on configure the mapping of OFDM symbol for PDCCH of fixed number again.For the mode of PDCCH configuration OFDM symbol adopts static or semi-static configuration mode in described MBSFN sub-frame.
As shown in Figure 1, the Serving cell of user 1,2 is community 1, and the Serving cell of user 3 is community 2, and the Serving cell of user 4 is community 3.User 1 is Equations of The Second Kind user, forms collaborative set for its Combined Treatment by community 1,2,3.User 2,3,4 is first kind user, and is the miscoordination user in first kind user.
To first kind user 2,3,4, independently dispatched by affiliated Serving cell respectively.To Equations of The Second Kind user 1, carry out combined dispatching by the collaborative set comprising community 1,2,3, the hybrid mode that described collaborative set combines according to UE-specific mode or Cell-specific mode or above-mentioned two kinds of modes is determined.
The sub-frame configuration of system as shown in Figure 2, to 10 subframes in a radio frames, subframe numbers mould 10 be 7,8,9 subframe be MBSFN sub-frame, all the other subframes are unicast sub-frame.
The first kind user (being respectively user 2, user 3, user 4) of respective community of independent scheduling in subframe 0 to these 7 unicast sub-frame of subframe 6, community 1,2,3, community 1,2,3 is in MBSFN sub-frame, namely subframe 7 to subframe 9 is combined schedules second type user (user 1), because of the existence of system MBMS, finally determine dispatched users 1 in subframe 7,8, subframe 9 is transmitted MBSFN business.
In subframe 7,8, as shown in Figure 3, the PDCCH of community 1, community 2, community 3 all takies front 2 OFDM symbol, and other OFDM symbol is for mapping PDSCH; Or community 1, community 2, community 3 PDCCH all take front 3 OFDM symbol; Or community 1, community 2, community 3 PDCCH all take front 4 OFDM symbol.CRS only maps in front 2 OFDM symbol, community 1, community 2, community 3 are according to the CSI-RS pattern of community 1, the PDSCH of other RE map user 1 beyond the CSI-RS unit (RE) of removing community 1, and identical modulation coding mode is used on shared band resource.After completing PDSCH mapping, the mapping of PDSCH is destroyed in community 2, community 3 on the RE position of respective CSI-RS, and maps respective CSI-RS on the RE position of respective CSI-RS.Final community 1 needs to destroy the PDSCH on community 2, community 3CSI-RS RE equally, thus ensures collaborative set Nei Ge community CSI-RS RE does not interfere with each other.Preferably, collaborative being integrated into that community 1, community 2, community 3 are formed adopts orthogonal design for the CSI-RS carried out user 1 in the MBSFN sub-frame of combined dispatching.
In the embodiment of the present invention, community 1, community 2 and community 3 are preferably Equations of The Second Kind user and carry out scheduling of resource, and after completing resource mapping, community 1, community 2, community 3, when identical, frequently, resource carries out cooperative transmission to user 1.
Example 2:
In this embodiment, described special clean culture time quantum is MBSFN sub-frame.For the mode of PDCCH configuration OFDM symbol adopts static or semi-static configuration mode in described MBSFN sub-frame.
As shown in Figure 4, the Serving cell of user 1,4 is community 1, and the Serving cell of user 2 is community 2, and the Serving cell of user 3 is community 3.User 1 is Equations of The Second Kind user, forms collaborative set for its Combined Treatment by community 1,2,3.User 2 is first kind user, and is the CS/CB collaborative user in first kind user, by community 2, community 3 to its cooperative scheduling.User 3,4 is the R8 user in first kind user, i.e. miscoordination user.
To Equations of The Second Kind user 1, carry out combined dispatching, joint transmission by the collaborative set comprising community 1,2,3.To first kind user 2, by comprising community 2, the collaborative set of community 3 carries out combined dispatching, by Serving cell (community 2) to its individual transmission.To first kind user 3,4, only independently to be dispatched by respective Serving cell, individual transmission.
The sub-frame configuration of system as shown in Figure 2, to 10 subframes in a radio frames, subframe numbers mould 10 be 7,8,9 subframe be MBSFN sub-frame, all the other subframes are unicast sub-frame.
By the combined dispatching of community 2, community 3, for user 2 is assigned with subframe 0 to these 7 unicast sub-frame of subframe 6, and determine the emission value of the 2 couples of users 2 in community.Community 3 when identical, dispatched users 3 in resource frequently, by selecting emission value, make user 2 orthogonal with the weighted channel of user 3, thus user 2, user 3 achieve interference and avoid.Community 1 is independent dispatched users 4 in subframe 0 to subframe 6.Schedules second type user (user 1), in MBSFN sub-frame, namely subframe 7 to subframe 9 is combined in community 1,2,3, because of the existence of system MBMS, finally determines dispatched users 1 in subframe 7,8, subframe 9 is transmitted MBSFN business.
Community 1, community 2, community 3 configure the mapping mode of PDCCH, PDSCH, CRS and CSI-RS with embodiment 1, distinguish be with embodiment 1, and in subframe 7,8, the PDCCH of community 1, community 2, community 3 all takies front 3 or front 4 OFDM symbol; Community 1, community 2, community 3 all adopt identical antenna configuration and polarization mode.
Example 3:
As shown in Figure 5, the Serving cell of user 1,2 is community 1, and the Serving cell of user 3 is community 2, and the Serving cell of user 4 is community 3.Do not have Equations of The Second Kind user in system, user 1 is the CS/CB collaborative user in first kind user, forms collaborative set to its cooperative scheduling by Serving cell (community 1), community 2, community 3.User 2,3,4 is the R8 user in first kind user, i.e. miscoordination user.
Because do not have Equations of The Second Kind user, the MBSFN sub-frame therefore in this system, without the need to carrying Combined Treatment data, is only used for MBMS transmission business.
To first kind user 1, carried out combined dispatching by the collaborative set comprising community 1,2,3, carried out individual transmission joint transmission by community 1.To first kind user 2,3,4, independently to be dispatched by respective Serving cell, individual transmission.
The sub-frame configuration of system as shown in Figure 6, subframe numbers mould 10 be 9 subframe be MBSFN sub-frame, therefore subframe 0 is unicast sub-frame to subframe 8, and subframe 9 is MBSFN sub-frame.
By the combined dispatching of community 1, community 2, community 3, for user 1 is assigned with subframe 0 to these 6 unicast sub-frame of subframe 5, and determine the emission value of the 1 couple of user 1 in community.Community 2 when identical, dispatched users 3 in resource frequently, community 3 when identical, dispatched users 4 in resource frequently, by selecting emission value, make user 1, user 3, user 4 weighted channel orthogonal, thus user 1, user 3, user 4 achieve interference and avoid.Community 1 is independent dispatched users 2 in subframe 0 to subframe 8, ensure user 2 and user 1 time, frequency resource is orthogonal.Subframe 9 does not allow any community independently to dispatch, and is used for MBMS transmission business.
Because do not have Equations of The Second Kind user, therefore the resource mapping of dispatched users is all carried out in community 1, community 2, community 3 according to respective PDCCH, CRS, CSI-RS.
In above example, only the PDCCH symbol numbers of transmission Equations of The Second Kind user is illustrated, specifically do not indicate Cyclic Prefix (CP) length that the MBSFN sub-frame as special clean culture time quantum adopts, conventional Cyclic Prefix (normal CP) can be adopted in the specific embodiment of the invention, also can adopt extended cyclic prefix (entended CP); Preferably, when each node carries out downlink transfer in collaborative set, in special clean culture time quantum, identical circulating prefix-length is adopted.
Embodiment 4:
Based on the method that the present invention proposes, the present invention also proposes a kind of multi-point cooperative transmission device, and as shown in Figure 7, this device is positioned at each cooperative nodes, work in coordination with as Equations of The Second Kind user carries out transfer of data, this device comprises: resource distribution and mapping block and data transmission unit.
Resource distribution and mapping block, for for only carrying out the first kind user of transfer of data by individual node and jointly carrying out Equations of The Second Kind user unit setup time of transfer of data by multiple node and carry out resource mapping; Described time quantum is time slot, subframe or radio frames;
For first kind user, by the resource distribution of its service node and mapping block independent on any clean culture time quantum for it carries out resource distribution and mapping; For Equations of The Second Kind user, carry out resource distribution and mapping for it at special clean culture time quantum by the resource distribution of each node and mapping block; Described special clean culture time quantum is the time quantum of MBSFN;
Data transmission unit, for carrying out transfer of data for first kind user and Equations of The Second Kind user;
For first kind user, on any clean culture time quantum by the data transmission unit of its service node independently for it carries out transfer of data; For Equations of The Second Kind user, only on special clean culture time quantum, carry out synergistic data transmission by the data transmission unit of multiple node for it.
For the multiple nodes in the collaborative set of Equations of The Second Kind user service comprise service node and cooperative nodes, be made up of a part for collaborative set or collaborative set service node and cooperative nodes, described collaborative set is according to determining based on UE-specific mode or based on the hybrid mode that Cell-specific mode or above-mentioned two kinds of modes combine.
Preferably, resource distribution and mapping block for PDCCH configures the OFDM symbol of fixed number, preferably, configure 1,2,3 or 4 OFDM symbol in described special clean culture time quantum; Or in Long Term Evolution protocol version 8 MBSFN time quantum be the OFDM symbol number of PDCCH configuration basis on configure the mapping of OFDM symbol for PDCCH of fixed number again, preferably can increase the mapping for PDCCH of 1,2 or 3 OFDM symbol;
Preferably, resource distribution and mapping block are in described special clean culture time quantum, and from fixing OFDM symbol position configuration PDSCH, described fixing OFDM symbol position is the 2nd, the 3rd, the 4th or the 5th.
Preferably, in each node in same collaborative set, described resource distribution and mapping block adopt identical configuration mode to configure PDCCH on described special clean culture time quantum, and described configuration mode comprises the position of OFDM symbol and number that map for PDCCH and the initial OFDM symbol position mapped for PDSCH.
Preferably, described resource distribution and mapping block, front 2 OFDM symbol configuration CRS only in described special clean culture time quantum; When resource mapping, for Equations of The Second Kind user, the resource distribution of its service node and mapping block carry out resource mapping according to the CSI-RS position relationship of this node; The resource distribution of each cooperative nodes and mapping block carry out resource mapping according to the CSI-RS position relationship of service node, when collaborative user's data are conflicted with the CSI-RS of this community, punch or do not put data to the data of collaborative user.
Preferably, when each node carries out downlink transfer in described collaborative set, in described special clean culture time quantum, identical circulating prefix-length is adopted; Each node in described collaborative set adopts identical antenna configuration and polarization mode.
Understandable, special clean culture time quantum of the present invention is non-refers in particular to MBSFN sub-frame, also can be to complete the time slot of identical function, subframe or radio frames.
It should be noted that, in configuration mode described herein, for LTERelease 8 user in first kind user, when carrying out unicast transmission, can only transmit in the subframe being considered as non-MBSFN by LTE Release 8.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (20)
1. a multi-point cooperative transmission method, is characterized in that, the method comprises:
For the first kind user only being carried out transfer of data by individual node, on any clean culture time quantum by its service node independently for it carries out transfer of data;
For the Equations of The Second Kind user jointly being carried out transfer of data by multiple node, only on special clean culture time quantum by multiple node for it carries out transfer of data;
Described special clean culture time quantum is the time quantum of Multicast Broadcast Single Frequency Network (MBSFN).
2. method according to claim 1, is characterized in that,
Described first kind user be independently dispatched by service node, the miscoordination user of transmitting or by service node individual transmission, by cooperative scheduling/collaborative wave beam (CS/CB) user of collaborative set combined dispatching;
Described Equations of The Second Kind user is by Combined Treatment (JP) collaborative user of collaborative set joint transmission, combined dispatching.
3. method according to claim 1, it is characterized in that, the multiple nodes carrying out transfer of data for described Equations of The Second Kind user comprise service node and cooperative nodes, the part being made up of collaborative set or collaborative set described service node and cooperative nodes carries out transfer of data for described Equations of The Second Kind user jointly, and described collaborative set is according to determining (UE-specific) mode based on user or determining that the hybrid mode that (Cell-specific) mode or above-mentioned two kinds of modes combine is determined based on community.
4. method according to claim 1, it is characterized in that, in described special clean culture time quantum, configure 1,2,3 or 4 OFDM (OFDM) symbols for Physical Downlink Control Channel (PDCCH), or in Long Term Evolution protocol version 8 MBSFN time quantum be the OFDM symbol number of PDCCH configuration basis on increase the mapping for PDCCH of 1,2 or 3 OFDM symbol again.
5. method according to claim 1, it is characterized in that, in described special clean culture time quantum, from fixing OFDM symbol position, carry out the mapping of Physical Downlink Shared Channel (PDSCH), described fixing OFDM symbol position is the 2nd, the 3rd, the 4th or the 5th.
6. method according to claim 1, is characterized in that, adopts static configuration mode or semi-static configuration mode in described special clean culture time quantum for PDCCH configures OFDM symbol.
7. method according to claim 1, it is characterized in that, each node adopts identical configuration mode to configure PDCCH on described special clean culture time quantum, and described identical configuration mode comprises the position of OFDM symbol and number that map for PDCCH and the initial OFDM symbol position mapped for PDSCH.
8. method according to claim 1, it is characterized in that, in described special clean culture time quantum, common reference symbol (CRS) is only configured in front 2 OFDM symbol, when resource mapping, for Equations of The Second Kind user, its service node carries out resource mapping according to channel measurement pilot frequency (CSI-RS) position relationship of this node; Each cooperative nodes carries out resource mapping according to the CSI-RS position relationship of service node, when collaborative user's data are conflicted with the CSI-RS of this community, punches to the data of collaborative user.
9. method according to claim 1, is characterized in that, in described special clean culture time quantum, the CSI-RS in collaborative set carries out orthogonal design, and on the Resource Unit conflicted with the CSI-RS of adjacent cell, punches or do not put data to data.
10. method according to claim 1, is characterized in that, in described special clean culture time quantum, is preferably Equations of The Second Kind user and carries out scheduling of resource.
11. methods according to claim 1, is characterized in that, work in coordination with each node in set adopt identical circulating prefix-length at described special clean culture time quantum.
12. methods according to claim 1, is characterized in that, when carrying out transfer of data for Equations of The Second Kind user, each node adopts identical antenna configuration and polarization mode.
13. according to the arbitrary described method of claim 1 to 12, and it is characterized in that, described time quantum is time slot, subframe or radio frames.
14. 1 kinds of multipoint coordinated transmission systems, is characterized in that, this system comprises:
Resource distribution and mapping block, for for only carrying out the first kind user of transfer of data by individual node and jointly carrying out Equations of The Second Kind user unit setup time of transfer of data by multiple node and carry out resource mapping; Described time quantum is time slot, subframe or radio frames;
For first kind user, by the resource distribution of its service node and mapping block independent on any clean culture time quantum for it carries out resource distribution and mapping; For Equations of The Second Kind user, carry out resource distribution and mapping for it at special clean culture time quantum by the resource distribution of each node and mapping block; Described special clean culture time quantum is the time quantum of MBSFN;
Data transmission unit, for carrying out transfer of data for first kind user and Equations of The Second Kind user;
For first kind user, on any clean culture time quantum by the data transmission unit of its service node independently for it carries out transfer of data; For Equations of The Second Kind user, only on special clean culture time quantum, carry out synergistic data transmission by the data transmission unit of multiple node for it.
15. systems according to claim 14, is characterized in that,
The multiple nodes carrying out transfer of data for described Equations of The Second Kind user comprise service node and cooperative nodes, a part for collaborative set or collaborative set is made up of described service node and cooperative nodes, jointly carry out transfer of data for described user by the data transmission unit in described collaborative set, described collaborative set is according to determining based on UE-specific mode or based on the hybrid mode that Cell-specific mode or above-mentioned two kinds of modes combine.
16. systems according to claim 14, is characterized in that,
Described resource distribution and mapping block, for PDCCH configures 1,2,3 or 4 OFDM symbol in described special clean culture time quantum, or in Long Term Evolution protocol version 8 MBSFN time quantum be the OFDM symbol number of PDCCH configuration basis on increase the mapping for PDCCH of 1,2 or 3 OFDM symbol again.
17. systems according to claim 14, it is characterized in that, described resource distribution and mapping block, in described special clean culture time quantum, from fixing OFDM symbol position configuration PDSCH, described fixing OFDM symbol position is the 2nd, the 3rd, the 4th or the 5th.
18. systems according to claim 14, is characterized in that,
In each node in same collaborative set, described resource distribution and mapping block adopt identical configuration mode to configure PDCCH on described special clean culture time quantum, and described configuration mode comprises the position of OFDM symbol and number that map for PDCCH and the initial OFDM symbol position mapped for PDSCH.
19. systems according to claim 14, is characterized in that,
Described resource distribution and mapping block, front 2 OFDM symbol configuration CRS only in described special clean culture time quantum; When resource mapping, for Equations of The Second Kind user, the resource distribution of its service node and mapping block carry out resource mapping according to the CSI-RS position relationship of this node; The resource distribution of each cooperative nodes and mapping block carry out resource mapping according to the CSI-RS position relationship of service node, when collaborative user's data are conflicted with the CSI-RS of this community, punch or do not put data to the data of collaborative user;
Described resource distribution and the CSI-RS of mapping block to the described special clean culture time quantum in collaborative set carry out orthogonal design.
20. systems according to claim 14, is characterized in that, when carrying out transfer of data for Equations of The Second Kind user, in described special clean culture time quantum, adopt identical circulating prefix-length; Each node in described collaborative set adopts identical antenna configuration and polarization mode.
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| CN103684558B (en) * | 2012-09-14 | 2019-03-22 | 中兴通讯股份有限公司 | Coordinated multipoint transmission processing method and system |
| JP6294327B2 (en) | 2012-09-20 | 2018-03-14 | エルジー エレクトロニクス インコーポレイティド | Downlink signal transmission / reception method and apparatus considering antenna port mutual relation in wireless communication system |
| CN104170492B (en) * | 2013-02-20 | 2018-08-14 | 华为技术有限公司 | A kind of method and device of distribution resource |
| CN107689883B (en) * | 2016-08-04 | 2020-11-03 | 中兴通讯股份有限公司 | Method and device for determining cooperative node |
| CN109391344B (en) * | 2017-08-03 | 2021-04-23 | 维沃移动通信有限公司 | Transmission method of reported information, user side equipment and network side equipment |
| CN109474389B (en) * | 2017-09-08 | 2021-01-08 | 维沃移动通信有限公司 | Processing method for occupation of downlink reference signal, user terminal and network side equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483873A (en) * | 2008-12-26 | 2009-07-15 | 西安电子科技大学 | Uplink multipoint collaboration implementing method combining inter-cell interference coordination |
| CN101511107A (en) * | 2009-03-23 | 2009-08-19 | 北京邮电大学 | Frequency planning method based on synergic multi-point single-user multi-input multi-output |
| WO2010036158A1 (en) * | 2008-09-24 | 2010-04-01 | Telefonaktiebolaget L M Ericsson (Publ) | Coordinated multipoint transmission/reception user grouping |
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| CN101483873A (en) * | 2008-12-26 | 2009-07-15 | 西安电子科技大学 | Uplink multipoint collaboration implementing method combining inter-cell interference coordination |
| CN101511107A (en) * | 2009-03-23 | 2009-08-19 | 北京邮电大学 | Frequency planning method based on synergic multi-point single-user multi-input multi-output |
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