WO2010127638A1 - 一种协同传输数据的方法、系统及基站设备 - Google Patents

一种协同传输数据的方法、系统及基站设备 Download PDF

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Publication number
WO2010127638A1
WO2010127638A1 PCT/CN2010/072540 CN2010072540W WO2010127638A1 WO 2010127638 A1 WO2010127638 A1 WO 2010127638A1 CN 2010072540 W CN2010072540 W CN 2010072540W WO 2010127638 A1 WO2010127638 A1 WO 2010127638A1
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WIPO (PCT)
Prior art keywords
coordinated
user equipment
base station
group
module
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PCT/CN2010/072540
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English (en)
French (fr)
Inventor
张晨晨
朱常青
姜静
孙云锋
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中兴通讯股份有限公司
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Publication of WO2010127638A1 publication Critical patent/WO2010127638A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, system, and base station apparatus for cooperatively transmitting data.
  • LTE-A Long-Term Evolution Advanced, LTE-A for short
  • people pay more and more attention to the average spectral efficiency of a cell and the spectral efficiency of a cell edge.
  • the spectral efficiency of a cell edge The most popular attention is mainly because the uplink and downlink of the LTE-A system are based on Orthogonal Frequency Division Multiplexing (OFDM) (or some variant of OFDM).
  • OFDM Orthogonal Frequency Division Multiplexing
  • CDMA Code-Division Multiple Access
  • the LTE-A system has no processing gain, and the cell is completely internal.
  • the frequency division is orthogonal, so there is almost no interference problem, but the interference processing at the edge of the cell is relatively tricky.
  • the cell edge users are not much different from the antenna distances of multiple neighboring cells, and are most susceptible to interference and affect performance. If different antennas of multiple cells can be used to simultaneously provide services for users at the cell edge, not only the inter-cell interference can be avoided, but also the multi-antenna can be fully utilized to increase the spatial dimension information, so that the capacity and performance of the system are greatly improved. Synergistic multipoint transmission is exactly what is proposed in this context.
  • Cooperative multi-point transmission uses different antennas of multiple cells to simultaneously provide services for users at the cell edge, which not only avoids inter-cell interference, but also utilizes multi-antenna technology to fully utilize the role of multi-antenna to increase spatial dimension information.
  • the capacity and performance of the system have been greatly improved.
  • coordinated multi-point transmission is not limited to inter-cell, and can also be used in a cell. Since the transmitted user information is spatially dispersed into multiple transmission points, these transmission points cooperate with each other to realize power, frequency and space. The optimal configuration of resources enables both suppression of interference and reliable and high-capacity link performance.
  • a plurality of nodes usually form a cooperative group to jointly provide coordinated transmission for cell edge users (collaborative users).
  • the user's service node is usually As the master node, it determines whether to perform coordinated transmission to users, selection of collaborative group members, scheduling of coordinated resources, and selection of collaborative methods.
  • the other nodes in the collaborative group are cooperative nodes, and participate in scheduling as the identity of the slave node.
  • the first is joint processing, where multiple nodes participating in the collaboration jointly send downlink service data to the coordinated users, and jointly receive uplink data of the coordinated users.
  • each member in the collaborative group participates in data transmission;
  • the second type is coordinated scheduling, each node cooperates with resource scheduling, performs comprehensive resource scheduling according to channel information of the service node and each coordinated node, and reduces interference received by the coordinated user,
  • This mode can be regarded as an enhanced interference coordination method.
  • Only the service nodes in the cooperative group transmit the coordinated users, and the cooperative nodes in the cooperative group participate in the scheduling. Joint scheduling of service nodes and coordinating nodes to achieve interference coordination.
  • the service node and each of the cooperative nodes need to obtain the downlink service data of the coordinated user, and the current service gateway in the LTE only delivers the downlink service data of the user to the service node of the user, and does not consider how to The downlink service data allocation requirements of the joint processing mode are met.
  • the present invention provides a method for cooperatively transmitting data, including: the serving base station determining, according to the channel quality information fed back by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if so, The serving base station sets up a cooperative group of the coordinated user equipment; the service gateway sends the downlink service data of the coordinated user equipment to one or more members in the collaborative group according to the information uploaded by the serving base station, After obtaining the downlink service data of the coordinated user equipment, the member of the collaboration group that participates in the coordinated transmission sends the obtained downlink service data. To the collaborative user device.
  • the present invention further provides a system for cooperatively transmitting data, including: a transceiver module, a service module, and a collaboration module, wherein: the service module is configured to: mode I: channel quality according to user equipment feedback And determining, by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if so, forming a collaboration group of the collaborative user equipment, where the collaboration group includes a service module and at least one collaboration module, where each module is a collaboration group.
  • the service module is configured as: mode II: determining, according to channel quality information fed back by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, If yes, the collaboration group of the collaborative user equipment is set up, the collaboration group includes a service module and at least one collaboration module, each module is a member of the collaboration group; uploading information to the transceiver module; as the collaboration group
  • the member receives the delivery of the transceiver module Cooperating with the downlink service data of the user equipment, and transmitting the downlink service data to the coordinated user equipment together with the other collaboration group members participating in the coordinated transmission;
  • the transceiver module is configured to: according to the information uploaded by the service module, The downlink service data of the collaborative user equipment is sent to one or more members of the collaboration group; the collaboration module is configured to: receive downlink service data of the collaboration user equipment delivered by the service module or the transceiver module, And sending the obtained downlink service data to the collaborative user
  • the present invention further provides a base station device for cooperatively transmitting data, comprising: a service module A and a cooperation module A, or a service module B and a cooperation module B, or a service module C and a cooperation module C, wherein
  • the service module A is configured to: determine, according to the channel quality information fed back by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if so, establish the collaboration a collaboration group of the user equipment, the collaboration group includes a serving base station and at least one coordinated base station; and uploading control signaling of the coordinated user equipment request service to the service gateway; and receiving the received coordinated user equipment delivered by the service gateway Downstream service data is sent to the association
  • the coordinated base station in the same group sends the downlink service data of the coordinated user equipment to the coordinated user equipment on the same time-frequency resource as the coordinated base station in the coordinated group; the collaboration module A is set as: When the base station device functions as a coordinated base station, the downlink service data of the coordinated user
  • the service module B is configured to: determine, according to the channel quality information that is sent back by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if so, form the coordinated user.
  • a collaboration group of the device the collaboration group includes a serving base station and at least one coordinated base station; and uploading control signaling of the coordinated user equipment request service and control signaling for indicating the cooperation group member information to the service gateway;
  • the base station device functions as a coordinated base station, receiving downlink service data of the coordinated user equipment sent by the service gateway, and downlinking the coordinated user equipment on the same time-frequency resource with other coordinated base stations in the cooperation group
  • the service data is sent to the coordinated user equipment.
  • the service module C is configured to: when the base station device serves as the serving base station, determine, according to the channel quality information fed back by the user equipment, whether the user equipment is in need of coordinated cooperation. User equipment, if yes, form the association a collaboration group of the user equipment, the collaboration group includes a serving base station and at least one coordinated base station; uploading control signaling of the coordinated user equipment request service to the service gateway, and control signaling for indicating the cooperation group member information, and receiving the service gateway
  • the downlink service data of the coordinated user equipment that is delivered, and the downlink service data of the coordinated user equipment is sent to the coordinated user equipment on the same time-frequency resource as the coordinated base station in the collaboration group;
  • the cooperation module C is configured to: when the base station device functions as a coordinated base station, receive downlink service data of the coordinated user equipment sent by the service gateway, and use the coordinated user on the same time-frequency resource as other members in the cooperation group
  • the downlink service data of the device is sent to the collaborative user equipment.
  • the method, system and base station device for cooperatively transmitting data proposed by the invention solve coordinated multi-point
  • the problem of the downlink service data allocation in the transmission enables the serving base station and each coordinated base station to obtain the downlink service data of the coordinated user, so that the coordinated user can perform coordinated transmission to meet the downlink service data allocation requirement of the joint processing mode, but not It will have any impact on the distribution of business data for non-cooperative users.
  • FIG. 1 is a schematic diagram of scheme 1 in a method for cooperatively transmitting data
  • FIG. 2 is a schematic diagram of scheme 2 in a method for cooperatively transmitting data
  • FIG. 3 is a flowchart of a method for cooperatively transmitting data
  • FIG. 5 is a schematic diagram of a method for systematically transmitting data in cooperation with examples 2, 3, and 4
  • FIG. 6 is a schematic structural diagram of a system scheme 1 for cooperative transmission of example 5
  • FIG. 7 is a schematic structural diagram of a system scheme 2 for cooperative transmission of example 6.
  • Scheme 1 (see Figure 1): The serving base station determines whether there is a coordinated user that needs to be coordinated according to the channel quality information fed back by the user, from the neighboring base station.
  • the cooperation request includes resource information that the serving base station requests the candidate coordinated base station to allocate for the coordinated user; and the candidate coordinated base station receives After the collaborative request, determining, according to the resource allocation situation, whether to forward the collaborative confirmation information of the collaborative request to the serving base station, the serving base station determining, according to the received collaborative confirmation information, the cooperative group member of the collaborative user, the serving base station
  • the control signaling mainly refers to the control signaling used to request the service.
  • the collaborative group is responsible for the business.
  • the gateway is transparent, and the service gateway sends the downlink service data of the coordinated user to the serving base station, and the serving base station transmits the downlink service data of the coordinated user to the coordinated base station, including the serving base station and the scheme, continuing the downlink in the current LTE.
  • the service data allocation scheme adds additional processing to the access network side.
  • the solution 2 (see FIG. 2) is: the serving base station determines, according to the channel quality information fed back by the user, whether there is a coordinated user that needs to perform coordinated transmission, selects a candidate coordinated base station from the neighboring base stations, and sends a coordinated request to the candidate coordinated base station.
  • the cooperation request includes the resource information that the serving base station requests the candidate coordinated base station to allocate for the coordinated user; after receiving the cooperation request, the candidate coordinated base station determines, according to the resource allocation situation, whether to feed back the collaboratively requested coordination confirmation information to the a serving base station, where the serving base station determines, according to the received coordination confirmation information, a cooperative group member of the coordinated user, where the serving base station sends information (including cooperative group information and control signaling, that is, a cooperative group for indicating the coordinated user)
  • the control signaling of the member information and the control signaling for requesting the service are sent to the service gateway together (the above control signaling may be sent as one message or separately sent as multiple messages), and the service gateway sends all the members to the collaboration group.
  • a special solution based on the scheme 2 is: the serving base station cannot participate in the coordinated user downlink service data transmission for some reason (for example, in a heavy load), and the serving base station sends an indication to the service gateway for indicating Adding an indication information to the control signaling of the member information of the collaboration group, to indicate that the service gateway does not send the downlink service data to the serving base station when the downlink service data of the coordinated user is sent, but only the downlink of the coordinated user
  • the service data is sent to the coordinated base station, and the downlink service data is sent by the coordinated base station in the collaboration group to the coordinated user.
  • the downlink service data allocation mode can also be implemented in a pre-agreed manner.
  • the serving base station may not send the indication information to the service gateway, and the service gateway defaults to sending the downlink service data only to the coordinated base station in the cooperative group member.
  • Step 301 The serving base station determines, according to the channel quality information fed back by the user, whether the user is a coordinated user that needs to be cooperatively transmitted, and if yes, selects a coordinated base station to form a collaborative group from the neighboring base stations;
  • the step of determining whether there is a coordinated user that needs to be cooperatively transmitted includes: the serving base station comparing the channel quality information fed back by the user with a preset cooperation threshold, when the channel quality information fed back is lower than or equal to the cooperation threshold And determining that the user is a collaborative user that needs to be cooperatively transmitted.
  • the step of selecting a coordinated base station to form a coordinated group from the neighboring base stations includes: the serving base station selects a candidate coordinated base station from the neighboring base stations, and sends a coordinated request to the one or more candidate coordinated base stations, where the coordinated request includes the serving base station Requiring the candidate cooperative base station to allocate the resource information for the coordinated user, and after receiving the cooperation request, the candidate cooperative base station determines whether to feed back the collaboratively requested coordination confirmation information to the serving base station according to the resource allocation situation, and the serving base station receives the Collaborative confirmation information, determining a collaborative group member of the collaborative user.
  • the serving base station may select the candidate cooperative base station from the neighboring base stations by using the following method: The serving base station selects several base stations with the strongest signal as the candidate coordinated base station according to the measurement information of the neighboring base station fed back by the user.
  • the cooperative group includes the serving base station and at least one coordinated base station.
  • the information includes the control signaling for requesting the service.
  • the method includes: determining, by the serving base station, a specific scheduling, determining a downlink resource and a modulation and coding mode allocated to the coordinated user, And notify the coordinated base station.
  • Step 303 The cooperative group member (all the members of the cooperative group or the coordinated base station in the cooperative group) delivers the obtained downlink service data to the coordinated user, and the service gateway sends the coordinated user to the serving base station and the coordinated base station.
  • the downlink service data is sent by the serving base station and the coordinated base station to the coordinated user; Or, the service gateway sends the downlink service data of the coordinated user to the coordinated base station, and the coordinated base station sends the downlink service data to the coordinated base station according to the received information of the received serving base station (including at least the cooperative group member information).
  • the service gateway sends the downlink service data of the coordinated user to the serving base station, where the serving base station transmits the downlink service data to the coordinated base station, and the coordinated group includes the serving base station and the coordinated base station.
  • the member sends the downlink service data to the coordinated user.
  • the downlink service data is sent to the coordinated user by: sending the retransmission data of the new data or the subframe n to the coordinated user through the air interface.
  • Example 1 As shown in FIG. 1 , the data of the solution 1 is sent out.
  • the method of the solution 1 is that the service gateway treats the collaborative user data and the non-cooperative user data in the same manner, and does not perform special processing;
  • the gateway sends the user data to the serving base station of the user through the S1 interface according to the serving base station to which the user belongs, so that the serving base station receives the coordinated user data and the non-cooperative user data in the service range:
  • the serving base station performs The air interface is transmitted to the non-cooperative user through the transmitting antenna.
  • the serving base station transmits the user data to other coordinated base stations in the cooperative group through the X2 interface according to the cooperative group member information of the user.
  • the serving base station first constructs the cooperation group, and includes: selecting a candidate cooperative base station from the neighboring base stations, performing control plane cooperative control signaling interaction with the candidate coordinated base station, and finally determining the cooperation group member.
  • the control plane cooperative control signaling interaction process between the serving base station and the candidate coordinated base station includes: the serving base station sends a cooperation request to the candidate coordinated base station, and after receiving the request, the candidate coordinated base station feeds back the coordinated confirmation information of the cooperation request to the serving base station (or rejects Collaborative information) to the serving base station.
  • the serving base station determines the cooperative group member according to the control plane cooperative control signaling interaction result, and includes: determining, by the candidate cooperative base station that sends the coordinated acknowledgement information, the coordinated base station among the cooperative group members. After the serving base station sends control signaling for the request service of the coordinated user to the service gateway, The serving gateway sends the downlink service data of the coordinated user to the serving base station, and the serving base station transmits the downlink service data of the coordinated user to the coordinated base station in the cooperative group, and the coordinated user data is received in all the coordinated base stations. Afterwards, all the cooperative group members perform downlink service data transmission on the coordinated time users on the same time-frequency resource.
  • the step of sending the control signaling by the serving base station does not have a fixed sequence relationship with the step of forming the cooperation group by the serving base station.
  • the service gateway transmits the user data to the serving base station of the user through the S1 interface according to the manner specified in the current LTE (step 401), and assumes that the user data received by the service base station includes the data of the user a and User b's data.
  • the user a and the user b feed back the channel quality information to the serving base station (step 402).
  • the serving base station determines whether the user a or the user b needs to perform coordinated transmission according to the channel quality information fed back by the user a, b (step 403), specifically, the serving base station.
  • the serving base station When the channel quality information of the feedback is lower than or equal to the cooperation threshold, it is determined that the serving base station itself cannot provide high-quality transmission for the user, and the user needs to perform coordinated transmission. According to this, it is determined that user a is a coordinated user, and multiple base stations need to cooperate to provide transmission for them; user b is still only provided by the serving base station for transmission, which is a non-cooperative user.
  • the serving base station initially selects, by the neighboring base station 1, the base station 2, and the serving base station itself, a cooperative group to perform coordinated transmission for the user a according to the measurement result reported by the user a (step 405).
  • the coordinated request is sent to the candidate cooperative group member base station 1 and the base station 2 (step 406), and the serving base station receives the coordinated acknowledgement information of the cooperative group member base station 1 and the base station 2 within the waiting delay (Ste 407), so that the serving base station determines that the serving base station itself, the base station 1 and the base station 2 form a cooperative group of the serving cooperative user a, and the serving base station is the primary in the cooperative group, and the base station 1 and the base station 2 are supplemented to jointly perform resource scheduling ( Step 409).
  • the serving base station determines, according to the resource allocation situation reported by the base station 1 and the base station 2 through the cooperation confirmation information, and determines that there are five time-frequency resource blocks that are idle on the three base stations according to the resource allocation situation, and then according to the user.
  • the serving base station determines to schedule the time-frequency resource blocks 1, 2 to the user a, and determines that the user a is QPSK (Quarature) on time-frequency resource blocks 1, 2 Phase Shift Keying, referred to as QPSK, quaternary phase shift keying), 1/3 encoding rate is optimal, so that the serving base station notifies base station 1 and base station 2 of downlink resources and modulation and coding modes.
  • the serving base station transmits the downlink service data of the user a delivered by the service gateway to the base station 1 and the base station 2 through the X2 interface.
  • the step of transmitting the downlink service data to the base station 1 and the base station 2 may be completed before the step of transmitting the downlink service data to the user equipment. Therefore, the serving base station, the base station 1, and the base station 2 transmit the retransmission data of the new data or the subframe n to the coordinated user a through the air interface on the corresponding time-frequency resource block according to the downlink resource and the modulation and coding scheme allocated to the coordinated user a. 410).
  • the service gateway only delivers the downlink service data of the user to the serving base station (step 408), and the serving base station does not need to distribute the downlink service of the user b to other base stations.
  • the data is independently scheduled and transmitted by the serving base station to the user b (step 404).
  • users a and b in the initial stage are non-cooperative users, and the channel a changes with time. After a period of time, user a becomes a collaborative user.
  • This example is an application example of the solution 1. Whether the users a and b are transparent to the service gateway by the coordinated user, the service gateway only distributes the downlink service data of the users a and b to their serving base stations, and the service base station according to the identity of the user (ie, Whether it is a collaborative user) and the collaborative group member information to determine whether the downlink service data transmitted from the service gateway needs to be transmitted to other members of the collaborative group.
  • the cooperative group member may include the serving base station and the coordinated base station 2, or the cooperative base station 1 and the coordinated base station 2, or at least one coordinated base station. In short, regardless of which nodes are included in the cooperative group, It can be implemented in the same way.
  • Example 2 As shown in FIG. 2, the data of the scheme 2 is sent out.
  • the method of the scheme 2 is: for the non-cooperative user data, the service gateway sends the service gateway to the serving base station of the user through the S1 interface.
  • the method for the serving base station to determine the coordinated user and the collaborative group is the same as that of the first embodiment.
  • the difference is that the serving base station sends the cooperative group member information to the service gateway, so that the service gateway can pass
  • the SI interface delivers the downlink service data of the coordinated user to all members in the cooperative group, including the serving base station and one or more coordinated base stations, so that all the base stations in the cooperative group receive the coordinated user data directly from the service gateway, thereby serving
  • the coordinated user downlink service data is no longer needed to be transmitted between the base station and the coordinated base station.
  • the control plane interaction cooperative control signaling method is the same as that in the first embodiment. After the cooperative control signaling interaction is completed, the serving base station and each coordinated base station, or each coordinated base station, performs downlink transmission on the same time-frequency resource to the coordinated user.
  • the service gateway not only transmits the coordinated user data to the serving base station of the coordinated user but also to the coordinated base station of the coordinated user, so the serving base station of the coordinated user needs to inform the service gateway of the cooperative group member information.
  • the service gateway transmits the user data to the serving base station of the user through the S1 interface according to the manner specified in the current LTE (step 501); for the sake of clarity, it is assumed that the user data received by the serving base station includes the user a. Data and user b's data.
  • the user a and the user b feed back the channel quality information to the serving base station (step 502); the serving base station determines whether the user a or the user b needs to perform coordinated transmission according to the channel quality information fed back by the user a, b (step 503), specifically, the serving base station It is determined that the serving base station itself cannot provide high-quality transmission for the user a due to the time-varying channel, and the user a needs to perform coordinated transmission, so that the user a becomes the coordinated user; the user b still only provides the transmission by the serving base station, and is still non- Collaborate users.
  • the serving base station Based on the measurement result reported by the user a, the serving base station initially selects the cooperative group formed by the adjacent base station 1, the base station 2, and the serving base station to perform coordinated transmission for the user a (step 505). After the serving base station determines the candidate cooperative group member, the coordinated request is sent to the candidate cooperative group member base station 1 and the base station 2 (step 506), and the serving base station receives the coordinated acknowledgement information of the cooperative group member base station 1 and the base station 2 within the waiting delay ( Step 507), so that the serving base station determines that the serving base station itself, the base station 1 and the base station 2 constitute a cooperative group of the service cooperative users a.
  • the serving base station transmits the cooperative group member information of the user a to the service gateway through the S1 interface (step 509), so that the service gateway knows that the serving base station, the base station 1, and the base station 2 are the cooperative group members of the user a, and the cooperative group is not received.
  • the service gateway Before serving the signaling of the user a, the service gateway distributes the downlink service data service of the user a to the member base stations in the user a collaboration group (step 510), which may be implemented by using a multicast mode to ensure the members of the collaboration group.
  • the collaborative user delivered by the service gateway is received.
  • the downlink service data of a is a.
  • the serving base station is mainly used, and the base station 1 and the base station 2 are auxiliary, and the resource scheduling is jointly performed (step 511).
  • the serving base station according to the resource allocation situation reported by the base station 1 and the base station 2, and combining with the resource allocation situation thereof. It is determined that five time-frequency resource blocks are idle on the three base stations.
  • the channel conditions of the user a to the serving base station are the best on the time-frequency resource blocks 1, 2, 3, and the time-frequency is The channel conditions of the user a to the base station 1 and the base station 2 on the resource blocks 1, 2, 4 are the best, the serving base station determines to schedule the time-frequency resource blocks 1, 2 to the user a, and simultaneously determines that the user a is in the time-frequency resource block 1, 2
  • the 16QAM Quadature Amplitude Modulation, QAM for short-range amplitude modulation
  • the 1/2 coding rate is optimal, so that the serving base station notifies the base station 1 and the base station 2 of the downlink resource and the modulation and coding scheme.
  • the serving base station, the base station 1 and the base station 2 transmit the retransmission data of the new data or the subframe n to the coordinated user a through the air interface on the corresponding time-frequency resource (step 512).
  • the serving base station determines that the coordinated transmission is not performed. Therefore, the downlink service data of the service gateway to the user b is still transmitted to the serving base station (step 508), and the serving base station independently schedules and transmits the user b (step 504). ).
  • the users a and b in the initial stage are non-cooperative users, and the user a becomes a coordinated user as the channel changes.
  • This example is an application example of the solution 2, and the service gateway needs to be notified to cooperate with the user's collaborative group member information, so that the service gateway simultaneously transmits the subsequent downlink service data of the coordinated user to each member in the collaborative group, and the cooperative group mainly serves the base station.
  • the coordinated base station is used as the secondary resource scheduling, and then the cooperative group members jointly transmit the downlink service data for the coordinated user. Because the gateway directly delivers the multi-point, the serving base station and the coordinated base station do not need to interact with the downlink service data of the user, and the current LTE is improved.
  • the downlink service data distribution scheme in the middle, enhancing the gateway capability.
  • Example 3 The method of the scheme 2 is also used, and the data is sent out as shown in FIG. 2, wherein the service gateway, the serving base station, the coordinated base station, and the coordinated user function are the same as the example 2.
  • the service gateway transmits the user data to the serving base station of the user through the S1 interface according to the manner specified in the current LTE (step 501).
  • the service base station is assumed to be closed.
  • the user data to be included includes the data of the user a and the data of the user b.
  • the user a and the user b feed back the channel quality information to the serving base station (step 502); the serving base station determines whether the user a or the user b needs to perform coordinated transmission according to the channel quality information fed back by the user a, b (step 503), specifically, the serving base station It is determined that the serving base station itself cannot provide high-quality transmission for the user a due to the time-varying channel, and the user a needs to perform coordinated transmission, so that the user a becomes the coordinated user; the user b still only provides the transmission by the serving base station, and is still non- Collaborate users.
  • the serving base station Based on the measurement result reported by the user a, the serving base station initially selects the cooperative group formed by the adjacent base station 1, the base station 2, and the serving base station to perform coordinated transmission for the user a (step 505). After the serving base station determines the candidate cooperative group member, the coordinated request is sent to the candidate cooperative group member base station 1 and the base station 2 (step 506), and the serving base station receives the coordinated acknowledgement information of the base station 1 in the waiting delay, and does not receive the base station 2 Collaborative confirmation information (step 507). Therefore, the serving base station determines that the serving base station itself and the base station 1 form a cooperative group to serve the user a.
  • the serving base station transmits the cooperative group member information of the user a to the service gateway through the S1 interface (step 509), so that the service gateway knows that the serving base station and the base station 1 are the cooperative group members of the user a, and then receives the cooperative group and no longer serves the Before the signaling of the user a, the service gateway sends the downlink service data service of the user a to the member base stations in the user a cooperative group (step 510), that is, to the serving base station and the base station 1; The sending can ensure that each member of the collaboration group receives the downlink service data of the coordinated user a delivered by the service gateway.
  • the serving base station is mainly used, and the base station 1 is adjacency, and the resource scheduling is jointly performed (step 511).
  • the serving base station determines 5 resource allocations according to the resource allocation situation reported by the base station 1 and the base station 2, and combined with the resource allocation situation.
  • the time-frequency resource block is idle on all three base stations.
  • the channel condition of the user a to the serving base station is the best on the time-frequency resource blocks 1, 2, and 3, and the time-frequency resource block 1 is 2, 4 the user A to the base station 1, the base station 2 has the best channel condition, the serving base station determines to allocate the time-frequency resource blocks 1, 2 to the user a, and determines that the user a uses 16QAM on the time-frequency resource blocks 1, 2,
  • the 1/2 coding rate is optimal, so that the serving base station notifies the base station 1 of the downlink resource and the modulation and coding mode; on the corresponding time-frequency resource, the serving base station and the base station 1 transmit the retransmission data of the new data or the subframe n to the coordination through the air interface.
  • the service base station determines that it does not perform coordinated transmission, so the service The downlink service data of the gateway to the user b is still transmitted to the serving base station (step 508), and the serving base station independently schedules and transmits to the user b (step 504).
  • the users a and b in the initial stage are non-cooperative users, and the user a becomes a coordinated user as the channel changes.
  • This example is an application example of the solution 2, and the service gateway needs to be notified to cooperate with the user's collaborative group member information, so that the service gateway delivers the downlink service data of the coordinated user to all members in the collaborative group at the same time, and the cooperative group mainly serves the base station.
  • the coordinated base station is used as the secondary resource scheduling. After that, the cooperative group members jointly transmit the downlink service data for the coordinated user. Because the gateway directly delivers the multi-point, the serving base station and the coordinated base station do not need to interact with the downlink service data of the user, which improves the current The downlink service data allocation scheme in LTE enhances the gateway capability.
  • Example 4 The method of the scheme 2 is also used, and the data is sent out as shown in FIG. 2, wherein the service gateway, the serving base station, the coordinated base station, and the coordinated user function are the same as the example 2.
  • the service gateway transmits the user data to the serving base station of the user through the S1 interface according to the manner specified in the current LTE (step 501).
  • the user data received by the serving base station includes the user a.
  • Data and user b's data are assumed to the user data received by the serving base station.
  • the user a and the user b feed back the channel quality information to the serving base station (step 502); the serving base station determines whether the user a or the user b needs to perform coordinated transmission according to the channel quality information fed back by the user a, b (step 503), specifically, the serving base station It is determined that the serving base station itself cannot provide high-quality transmission for the user a due to the time-varying channel, and the user a needs to perform coordinated transmission, so that the user a becomes the coordinated user; the user b still only provides the transmission by the serving base station, and is still non-cooperative. user.
  • the serving base station Based on the measurement result reported by the user a, the serving base station initially selects the cooperative group formed by the adjacent base station 1, the base station 2, and the serving base station to perform coordinated transmission for the user a (step 505). After the serving base station determines the candidate cooperative group member, the coordinated request is sent to the candidate cooperative group member base station 1 and the base station 2 (step 506), and the serving base station receives the coordinated acknowledgement information of the base station 1 and the coordinated request of the base station 2 in the waiting delay. Collaborative confirmation information (step 507). Therefore, the serving base station determines that the serving base station itself and the base station 1 and the base station 2 form a cooperative group to serve the user a.
  • the serving base station transmits the cooperation group member information of the user a to the service gateway through the S1 interface (step 509), so that the service gateway knows that the serving base station, the base station 1, and the base station 2 are the cooperative group members of the user a, and the service gateway puts the downlink service data of the user a before receiving the signaling that the cooperative group no longer serves the user a.
  • the service is distributed to the user base stations in the user a cooperative group (step 510), that is, to the serving base station and the base station 1.
  • the multicast service may be used to transmit the downlink service data of the collaborative user a delivered by the service gateway.
  • the serving base station is mainly used, and the base station 1 and the base station 2 are auxiliary, and the resource scheduling is jointly performed (step 511).
  • the serving base station has no resources that can be allocated to the user a, and the base station 1 and the base station 2 have 5 time-frequency.
  • the resource block is idle, wherein the channel conditions of the time-frequency resource blocks 1, 2 to user a are the best, so the serving base station determines to schedule the time-frequency resource blocks 1, 2 to the user a, and simultaneously determines that the user a is in the time-frequency resource block 1, 2
  • the 16QAM is used, and the 1/2 coding rate is optimal, so that the serving base station notifies the base station 1 and the base station 2 of the downlink resource and the modulation and coding scheme.
  • the retransmission data of the new data or subframe n is transmitted by the base station 1 and the base station 2 to the coordinated user a through the air interface on the corresponding time-frequency resource (step 512).
  • the serving base station performs scheduling and control signaling reception and does not participate in service data transmission.
  • the serving base station determines that the coordinated transmission is not performed. Therefore, the downlink service data of the service gateway to the user b is still transmitted to the serving base station (step 508), and the serving base station independently schedules and transmits the user b (step 504). ).
  • the users a and b in the initial stage are non-cooperative users, and the user a becomes a coordinated user as the channel changes.
  • This example is an application example of the solution 2, and the service gateway needs to be notified to cooperate with the user's collaborative group member information, so that the service gateway delivers the downlink service data of the coordinated user to all members in the collaborative group at the same time, and the cooperative group mainly serves the base station.
  • the coordinated base station performs resource scheduling, and then the coordinated base station transmits downlink service data for the coordinated user. Because the gateway directly delivers multiple points, the monthly service base station and the coordinated base station do not need to interact with the downlink service data of the user, and the downlink service data allocation scheme in the current LTE is improved, and the gateway capability is enhanced.
  • Example 5 A system for cooperatively transmitting data, as shown in FIG. 6, includes a transceiver module 10, a service module 20, a collaboration module 30, and a collaboration user 40;
  • the service module 20 determines, according to the channel quality information fed back by the user, whether there is a user who needs to perform coordinated transmission, and if so, the service module sets up a cooperation group, and sends information to the transceiver module 10, and the cooperation group member receives the transceiver module.
  • the downlink service data is sent to the collaborative user 40.
  • the transceiver module 10 sends the downlink service data to the collaboration group member according to the information uploaded by the service module, and the collaboration group member sends the downlink service data.
  • the collaboration module 30 receives the downlink service data of the collaboration user delivered by the service module or the transceiver module; the collaboration user 40 uploads the feedback channel quality information to the service module 20 to receive the service.
  • the service module 20 further includes a determination unit 201, configured to determine whether there is a user who needs to perform coordinated transmission, and cooperate with the channel quality information and the settings according to the feedback Threshold comparison, when the channel quality information of the feedback is lower than or equal to the cooperation threshold, Performing cooperative transmission, the user becomes the user of the cooperative transmission;
  • the service module 20 further includes a selecting unit 202, configured to send a coordinated request to the candidate cooperation module selected from the neighboring base stations, and send a coordinated request to the candidate cooperation module.
  • the candidate collaboration module determines whether to feed back the collaborative confirmation information of the cooperation request to the selection unit 202 according to the resource allocation situation, and the selection unit 202 determines the cooperation according to the collaborative confirmation information of the received collaboration request.
  • the service module 20 further includes a control unit 203, configured to send a collaboration request to all the collaboration modules 30 of the collaboration group, and all the cooperation modules 30 of the collaboration group acknowledge and feedback the control unit;
  • the service module is further configured to determine the specific scheduling by the control unit, determine the downlink resource and the modulation and coding mode allocated to the cooperation unit, and notify the cooperation unit.
  • the service module 20 further includes a service data transceiver unit 204.
  • the system of Embodiment 1 is: a receiving module 10, which delivers downlink service data of the user a and b to the service module 20 of the user, and cooperates according to the feedback of the service module 20.
  • the group information is sent to the service module 20 in the collaboration group.
  • the service module 20 transmits the downlink service data of the users a and b delivered by the receiving module to the neighboring base station, and determines that cooperation is needed.
  • the user of the transmission judges the user who needs to perform the coordinated transmission, and the judging unit 201 compares the channel quality information fed back by the user with the set cooperation threshold, and when the channel quality information of the feedback is lower than or equal to the cooperation threshold,
  • the user a performs coordinated transmission, the user a becomes the cooperative transmission user, and the user b is a non-collaborative user;
  • the service module 20 further includes a selection unit, and the main task of the module is to form a cooperation group, and the service module is mainly, and the cooperation is performed.
  • the unit 301 and the cooperation unit 302 are supplemented; the service module 20 further includes a control unit 203, and the control signaling module 203 sends a cooperation request to all the cooperation modules 30 of the cooperation group, and all the cooperation modules of the cooperation group acknowledge and feedback the control unit. 203.
  • the collaboration group jointly performs resource scheduling, and the selecting unit determines a specific scheduling, and determines a distribution association.
  • the downlink resource of the user and the modulation and coding mode, and the cooperation module 30 is notified; the service module 20 further includes a service data transceiver unit 204, and the service data transceiver unit 204 uploads the user collaboration group information to the transceiver module 10,
  • the user collaboration group information is transmitted to the transceiver module 10 through the S1 interface.
  • the service data transmission and reception 204 transmits the downlink service data sent by the transceiver module to the coordinated user on the same time-frequency resource through the X2 interface. It is assumed that the cooperative group is jointly coordinated for the coordinated user a, and the time-frequency resource blocks 1 and 2 are scheduled to be coordinated to the coordinated user a, and the coordinated user a is determined to use the QPSK and 1/3 codes on the time-frequency resource blocks 1 and 2. The rate is optimal, and the service module notifies the collaboration module of the downlink resource and the modulation and coding mode. At the same time, the service module 20 transmits the downlink service data of the user a delivered by the transceiver module 10 to the collaboration module 30 through the X2 interface.
  • the service module 20 and the cooperation module 30 transmit the retransmission data or new data of the subframe n to the coordinated user a through the air interface on the corresponding time-frequency resource block according to the downlink resource and the modulation and coding mode allocated to the coordinated user a, in the same
  • the downlink service data transmission is performed on the coordinated user a on the time-frequency resource, and the downlink service data allocation scheme in the current LTE is continued, and additional processing is added to the access network side.
  • the cooperation group member is further composed of the following, including the service module and the collaboration unit 302, or the collaboration unit 301 and the collaboration unit 302, or One less cooperative unit can be implemented by the above method.
  • the example 6 also provides a system for cooperative transmission.
  • the system includes: a receiving module 10, a service module 20, a collaboration module 30, and a cooperative user module 40.
  • the system of the second embodiment is: a transceiver module 10, and a user a,
  • the downlink service data is sent to the service module 20 of the user, and the downlink service data of the coordinated user is sent to all members in the collaboration group according to the collaboration group information fed back by the service module 20, and the downlink of the coordinated user is
  • the service data is sent to the service module 20 and the collaboration module 30 in the collaboration group; or the downlink service data of the collaboration user is sent to at least one collaboration module 30 in the collaboration group;
  • the service module 20, the transceiver module is The downlink service data of the transmitted users a and b is transmitted to the neighboring base station, and the user who needs to perform coordinated transmission is determined.
  • the determining unit 201 determines the user who needs to perform coordinated transmission, and the determining unit 201 compares the channel quality information fed back by the user with the set cooperative threshold.
  • the service module 20 further includes a selection unit, the cooperation group is formed, the service module 20 is the main, and the cooperation module 301 and the cooperation module 302 are supplemented;
  • the service module 20 further includes a control signaling unit 203, and the control signaling unit 203 sends a cooperation request to all the cooperation modules 30 of the cooperation group, and all the cooperation modules of the cooperation group acknowledge and feedback the control unit 203, the cooperation group.
  • the service module 20 further includes a service data transceiver unit 204, configured to The receiving module uploads the user collaboration group information, and the user collaboration group information is uploaded to the transceiver module 10 through the S1 interface; the service data transceiver module 204 transmits the downlink service data delivered by the receiving module to the same time through the X2 interface.
  • the downlink service data transmission is performed on the coordinated resources on the frequency resource.
  • the service module 20 transmits the collaboration group information of the user a to the receiving module through the S1 interface, so that the transceiver module knows that the service module, the collaboration unit 301, and the collaboration unit 302 are the collaboration group information of the user a, and then receives the collaboration group.
  • the transceiver module sends the downlink service data of the user a to the members of the user a collaborative group, which can be implemented by using the multicast mode, and can ensure that the members of the collaboration group receive the receiving module at the same time.
  • the downlink user data of the coordinated user is delivered. Therefore, the service module 20 is mainly used, and the cooperation module 301 and the cooperation module 302 are used as a supplement to jointly perform resource scheduling.
  • the service module 20 combines the resources allocated by the cooperation unit 301 and the cooperation unit 302, and combines its own resources.
  • the allocation condition determines that five time-frequency resource blocks are idle on all three modules.
  • the channel condition of user a to the service module is best on time-frequency resource blocks 1, 2, and 3,
  • the channel conditions of the user a to the cooperation module 301 and the coordination module 302 on the time-frequency resource blocks 1, 2, 4 are the best, and the service module determines to schedule the time-frequency resource blocks 1, 2 to the user a, and determines that the user a is in the time-frequency resource.
  • the 16QAM is used on the blocks 1 and 2, and the 1/2 coding rate is optimal, so that the service module notifies the coordination unit 301 and the coordination unit 302 of the downlink resource and the modulation and coding mode.
  • the retransmission data or the new data of the subframe n is transmitted to the coordinated user a through the air interface on the corresponding time and frequency resources; the downlink service data allocation scheme in the current LTE is continued, and additional processing is added to the access network side.
  • the cooperation group member is further composed of the following, including the service module and the collaboration unit 302, or the collaboration unit 301 and the collaboration unit 302, or at least one collaboration unit, may use the foregoing Method implementation.
  • a system for cooperatively transmitting data comprising: a transceiver module, a service module and a cooperation module, wherein: the service module is set to: mode I: channel quality according to user equipment feedback And determining, by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if so, forming a collaboration group of the collaborative user equipment, where the collaboration group includes a service module and at least one collaboration module, where each module is a collaboration group.
  • the service module is configured as: mode II: determining, according to channel quality information fed back by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, If yes, forming the collaborative user equipment a collaboration group, the collaboration group includes a service module and at least one collaboration module, each module being a member of the collaboration group; uploading information to the transceiver module; receiving, as the member of the collaboration group, the transceiver module
  • the downlink service data of the collaborative user equipment is sent to the collaborative user equipment together with the other collaborative group members participating in the coordinated transmission; the transceiver module is configured to: according to the information uploaded by the service module, The downlink service data of the collaborative user equipment is sent to one or more members of the collaboration group.
  • the collaboration module is configured to: receive downlink service data of the collaboration user equipment delivered by the service module or the transceiver module And sending the obtained downlink service data to the collaborative user equipment.
  • the service module is set to mode I: the information that is sent by the service module to the transceiver module includes: control signaling for indicating the cooperative user equipment cooperation group member information, and a control signal for requesting service
  • the transceiver module is further configured to: when the service module is set to the mode I, send the downlink service data of the coordinated user equipment to the All members of the collaboration group except the service module.
  • the cooperative group member participating in the coordinated transmission includes: a cooperative group member that receives the downlink service data of the coordinated user equipment.
  • the information that is sent to the transceiver module includes: control signaling for indicating the cooperative user equipment cooperative group member information, and control signaling for requesting the service;
  • the transceiver module is further configured to: when the service module is configured as the mode II, send the downlink service data of the coordinated user equipment to the collaboration group according to the collaboration group member information of the collaboration user equipment All members; at this time, the cooperative group member participating in the coordinated transmission includes: a cooperative group member that receives downlink service data of the coordinated user equipment.
  • the information uploaded to the transceiver module includes: control signaling for requesting a service; the transceiver module is further configured to: when the service module is set to mode II And sending the downlink service data of the coordinated user equipment to the service module in the collaboration group according to the control signaling; the service module is further configured to: receive the transceiver module in the mode II After the downlink service data of the coordinated user equipment is delivered, the downlink service data is also sent to the collaboration module in the collaboration group;
  • the same group member includes: a service module and a cooperation module that receives the downlink service data.
  • Example 7 The base station device that implements the foregoing method, the method includes: a service module and a collaboration module, where: the service module is configured to: when the base station device serves as a serving base station, determine the user according to channel quality information fed back by the user equipment. Whether the device is a coordinated user equipment that needs to be cooperatively transmitted, and if so, the cooperative group of the coordinated user equipment is set up, the cooperation group includes the serving base station and the at least one coordinated base station; and the control signaling for requesting the coordinated user equipment request service is sent to the service gateway.
  • the service module is configured to: when the base station device serves as a serving base station, determine the user according to channel quality information fed back by the user equipment. Whether the device is a coordinated user equipment that needs to be cooperatively transmitted, and if so, the cooperative group of the coordinated user equipment is set up, the cooperation group includes the serving base station and the at least one coordinated base station; and the control signaling for requesting the coordinated user equipment request service is sent to the service gateway.
  • the downlink service data of the user equipment is sent to the coordinated user equipment.
  • the cooperation module is configured to: when the base station device functions as a coordinated base station, receive downlink service data of the coordinated user equipment sent by the serving base station, and the cooperation group The serving base station in the same time-frequency resource will use the synergy The downlink service data of the user equipment is sent to the collaborative user equipment.
  • the service module includes: a judging unit, a selecting unit, a control unit, and a service data transceiving unit, wherein: the judging unit is configured to: compare channel quality information fed back by the user equipment with a preset collation threshold to determine Whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and when the channel quality information that is fed back is lower than or equal to the collaboration threshold, determining that the user equipment needs to perform coordinated transmission, where the user equipment is a collaborative user equipment; a unit, configured to: select a candidate coordinated base station, send a coordination request to the candidate coordinated base station, and determine, according to the coordinated confirmation information sent by the received candidate coordinated base station, a cooperative group member of the coordinated user equipment; a control unit, and a setting thereof And performing a joint resource scheduling with the coordinated base station in the collaboration group to determine a downlink resource and a modulation and coding mode allocated to the coordinated user equipment, and notifying the coordinated base station in the cooperation group of the resource scheduling result; Unit, which is
  • the service module further includes a resource scheduling unit, configured to: perform joint resource scheduling with other members of the cooperation group to determine a downlink resource and a modulation and coding mode allocated to the coordinated user equipment, and use the transceiver unit to allocate resources.
  • the scheduling result notifies the coordinated base station in the collaborative group.
  • Example 8 Another base station device that implements the foregoing method, the method includes: a service module and a collaboration module, where: the service module is configured to: when the base station device serves as a serving base station, determine according to channel quality information fed back by the user equipment Whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if so, a cooperative group of the coordinated user equipment is set up, the cooperation group includes a serving base station and at least one coordinated base station; and the coordinated user equipment request service is uploaded to the service gateway.
  • the service module is configured to: when the base station device serves as a serving base station, determine according to channel quality information fed back by the user equipment Whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if so, a cooperative group of the coordinated user equipment is set up, the cooperation group includes a serving base station and at least one coordinated base station; and the coordinated user equipment request service is uploaded to the service gateway.
  • the control signaling and the control signaling for indicating the cooperation group member information; the cooperation module is configured to: when the base station device functions as a coordinated base station, receive downlink service data of the coordinated user equipment sent by the service gateway, and cooperate with the collaboration The other coordinated base stations in the group send the downlink service data of the coordinated user equipment to the coordinated user equipment on the same time-frequency resource.
  • the service module includes: a judging unit, a selecting unit, a control unit, and a service data transceiving unit, wherein: the judging unit is configured to: compare channel quality information fed back by the user equipment with a preset collation threshold to determine Whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and when the channel quality information that is fed back is lower than or equal to the collaboration threshold, determining that the user equipment needs to perform coordinated transmission, where the user equipment is a collaborative user equipment; a unit, configured to: select a candidate coordinated base station, send a coordination request to the candidate coordinated base station, and determine, according to the coordinated confirmation information sent by the received candidate coordinated base station, a cooperative group member of the coordinated user equipment; a control unit, and a setting thereof To: perform joint resource scheduling with the coordinated base station in the collaboration group to ensure Determining a downlink resource and a modulation and coding mode allocated to the coordinated user equipment, and notifying a coordinated base station in the cooperation group, and a service data trans
  • the service module further includes a resource scheduling unit, configured to: perform joint resource scheduling with other members of the cooperation group to determine a downlink resource and a modulation and coding mode allocated to the coordinated user equipment, and use the transceiver unit to allocate resources.
  • the scheduling result notifies the coordinated base station in the collaborative group.
  • the service module is configured to: when the base station device serves as the serving base station, determine, according to the channel quality information fed back by the user equipment, whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and if yes, form the collaboration.
  • a collaboration group of the user equipment the collaboration group includes a serving base station and at least one coordinated base station; uploading control signaling of the coordinated user equipment request service to the service gateway, and control signaling for indicating the cooperation group member information, and receiving the service gateway
  • the downlink service data of the coordinated user equipment that is delivered, and the downlink service data of the coordinated user equipment is sent to the coordinated user equipment on the same time-frequency resource as the coordinated base station in the collaboration group;
  • the collaboration module is configured to: when the base station device functions as a coordinated base station, receive downlink service data of the coordinated user equipment sent by the service gateway, and use the coordinated user equipment on the same time-frequency resource with other members in the cooperation group.
  • the downlink service data is sent to the collaborative user equipment.
  • the service module includes: a judging unit, a selecting unit, a control unit, and a service data transceiving unit, wherein: the judging unit is configured to: compare channel quality information fed back by the user equipment with a preset collation threshold to determine Whether the user equipment is a coordinated user equipment that needs to be cooperatively transmitted, and when the channel quality information that is fed back is lower than or equal to the collaboration threshold, determining that the user equipment needs to perform coordinated transmission, where the user equipment is a collaborative user equipment; a unit, configured to: select a candidate coordinated base station, send a coordination request to the candidate coordinated base station, and determine the coordinated use according to the coordinated confirmation information sent by the received candidate coordinated base station a cooperative group member of the user equipment; the control unit is configured to: perform joint resource scheduling with the coordinated base station in the cooperative group to determine a downlink resource and a modulation and coding mode allocated to the coordinated user equipment, and notify the resource scheduling result a cooperative base station in the collaboration
  • the service module further includes a resource scheduling unit, configured to: perform joint resource scheduling with other members of the cooperation group to determine a downlink resource and a modulation and coding mode allocated to the coordinated user equipment, and use the transceiver unit to allocate resources.
  • the scheduling result notifies the coordinated base station in the collaborative group.
  • the method and system for cooperatively transmitting data proposed by the present invention solves the problem in downlink service data allocation in coordinated multipoint transmission, so that the serving base station and each coordinated base station can obtain downlink service data of the coordinated user, thereby enabling Synergistic transmission is performed on the coordinated users to meet the downlink service data allocation requirements of the joint processing mode, but does not affect the service data allocation of the non-cooperative users.

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Abstract

本发明公开了一种协同传输数据的方法、系统和基站设备，以满足联合处理方式的下行业务数据分配要求。所述方法包括：服务基站根据用户设备反馈的信道质量信息，判断所述用户设备是否为需要协同传输的协同用户设备，若是，则所述服务基站组建所述协同用户设备的协同组；业务网关根据所述服务基站上传的信息，将所述协同用户设备的下行业务数据下发给所述协同组中的一个或多个成员，参与协同传输的协同组成员获得所述协同用户设备的下行业务数据后，将获得的所述下行业务数据下发给所述协同用户设备。

Description

一种协同传输数据的方法、 系统 ^站设备
技术领域 本发明涉及通信领域， 具体地， 涉及一种协同传输数据的方法、 系统及 基站设备。
背景技术 随着 LTE-A ( Long-Term Evolution Advanced, 简称为 LTE-A )需求的提 出，人们对小区平均频谱效率和小区边缘频谱效率越来越重视，相比较而言， 小区边缘的频谱效率最受人们关注，这主要是因为 LTE-A系统的上下行都是 以正交频分复用（ Orthogonal Frequency Division Multiplexing,简称为 OFDM ) (或者以 OFDM的某种变形）为基本多址复用方式的频分系统， 与传统的以 码分多址（ Code-Division Multiple Access, 简称为 CDMA )为基本多址复用 方式的无线通信系统不同， LTE-A系统没有处理增益， 小区内部因为完全频 分正交， 所以几乎没有干扰问题， 但在小区边缘处的干扰处理相对棘手。 小 区边缘用户距离多个相邻小区的天线距离相差不大， 最易受到干扰而影响性 能。 若能够利用多个小区的不同天线为小区边缘的用户同时提供服务， 则不 但避免了小区间的干扰， 还能充分发挥多天线增加空间维信息的作用， 使得 系统的容量和性能得到大幅提升。 协同多点传输正是在这个背景下所提出的。 协同多点传输使用多个小区 的不同天线为小区边缘的用户同时提供服务，这样不但避免了小区间的干扰， 同时由于釆用多天线技术， 能充分发挥多天线增加空间维信息的作用， 使得 系统的容量和性能得到大幅度的提升。当然协同多点传输也不局限于小区间， 在小区内同样可以使用， 由于发射的用户信息在空间上分散为多个传输点， 这些传输点又互相配合， 即能实现对功率、 频率和空间资源的最佳配置， 从 而既能实现对干扰的抑制， 又能实现可靠和高容量的链路性能。 协同多点传输中， 通常由若干个节点 （基站）构成一个协同组， 共同为 小区边缘用户 （协同用户）提供协同传输。 协同组中， 用户的服务节点通常 为主节点， 其决定了是否对用户进行协同传输、 协同组成员的选择、 协同资 源的调度、 协同方式的抉择等。 协同组中的其他节点为协同节点， 以从节点 的身份参与调度。 就协同方式而言， 当前已达成共识， 协同方式可以分成两大类： 第一类为联合处理， 由参与协同的多个节点联合对协同用户发送下行业 务数据， 以及联合接收协同用户的上行数据， 即协同组内各成员均参与数据 传输； 第二类为协同调度， 各节点协同进行资源调度， 根据服务节点以及各协 同节点的信道信息来进行综合资源调度， 减小协同用户受到的干扰， 但实际 发送、 接收数据的节点只有一个， 这种模式可以看成是一种增强的干扰协调 方法， 仅由协同组内的服务节点对协同用户进行传输， 协同组内的协同节点 参与调度， 通过服务节点、 协同节点的联合调度， 实现干扰协调。 从以上描述可看出， 联合处理方式中服务节点、 以及各协同节点都需要 得到协同用户的下行业务数据，而当前 LTE中业务网关仅向用户的服务节点 下发用户下行业务数据， 没有考虑如何满足联合处理方式的下行业务数据分 配要求。
发明内容 本发明要解决的技术问题是提供一种协同传输数据的方法、 系统和基站 设备， 以满足联合处理方式的下行业务数据分配要求。 为解决上述技术问题，本发明提供了一种协同传输数据的方法，其包括： 服务基站根据用户设备反馈的信道质量信息， 判断所述用户设备是否为 需要协同传输的协同用户设备， 若是， 则所述服务基站组建所述协同用户设 备的协同组； 业务网关根据所述服务基站上传的信息， 将所述协同用户设备的下行业 务数据下发给所述协同组中的一个或多个成员， 参与协同传输的协同组成员 获得所述协同用户设备的下行业务数据后， 将获得的所述下行业务数据下发 给所述协同用户设备。
为解决上述技术问题， 本发明还提供了一种协同传输数据的系统， 其包 括： 收发模块、 服务模块和协同模块， 其中： 所述服务模块设置为： 模式 I： 根据用户设备反馈的信道质量信息， 判 断所述用户设备是否为需要协同传输的协同用户设备， 若是， 则组建所述协 同用户设备的协同组， 所述协同组包括服务模块以及至少一个协同模块， 每 个模块为协同组中的一个成员； 向所述收发模块上传信息； 或者， 所述 Λ良务 模块设置为： 模式 II： 根据用户设备反馈的信道质量信息， 判断所述用户设 备是否为需要协同传输的协同用户设备， 若是， 则组建所述协同用户设备的 协同组， 所述协同组包括服务模块以及至少一个协同模块， 每个模块为协同 组中的一个成员； 向所述收发模块上传信息； 作为所述协同组成员接收所述 收发模块下发的所述协同用户设备的下行业务数据， 与其他参与协同传输的 协同组成员一起将所述下行业务数据下发给所述协同用户设备； 所述收发模块设置为： 根据所述服务模块上传的信息， 将协同用户设备 的下行业务数据下发给协同组中的一个或多个成员； 所述协同模块设置为： 接收所述服务模块或所述收发模块下发的所述协 同用户设备的下行业务数据， 将获得的所述下行业务数据下发给所述协同用 户设备。
为解决上述技术问题， 本发明还提供了一种协同传输数据的基站设备， 其包括： 服务模块 A和协同模块 A, 或者服务模块 B和协同模块 B, 或服务 模块 C和协同模块 C, 其中： 所述服务模块 A设置为： 当所述基站设备作为服务基站时， 根据用户设 备反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户 设备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站 以及至少一个协同基站；向业务网关上传协同用户设备请求业务的控制信令； 将接收到的所述业务网关下发的所述协同用户设备的下行业务数据发送给协 同组中的协同基站， 与所述协同组中的协同基站在相同的时频资源上将所述 协同用户设备的下行业务数据下发给所述协同用户设备； 所述协同模块 A设置为： 当所述基站设备作为协同基站时， 接收服务基 站发送的协同用户设备的下行业务数据， 与所述协同组中的服务基站在相同 的时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户设 备；
所述服务模块 B设置为： 当所述基站设备作为服务基站时， 根据用户设 备反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户 设备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站 以及至少一个协同基站； 向业务网关上传协同用户设备请求业务的控制信令 以及用于指示协同组成员信息的控制信令； 所述协同模块 B设置为： 当所述基站设备作为协同基站时， 接收业务网 关发送的协同用户设备的下行业务数据， 与所述协同组中的其他协同基站在 相同的时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户 设备； 所述服务模块 C设置为： 当所述基站设备作为服务基站时， 根据用户设 备反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户 设备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站 以及至少一个协同基站； 向业务网关上传协同用户设备请求业务的控制信令 以及用于指示协同组成员信息的控制信令， 接收所述业务网关下发的所述协 同用户设备的下行业务数据， 与所述协同组中的协同基站在相同的时频资源 上将所述协同用户设备的下行业务数据下发给所述协同用户设备； 所述协同模块 C设置为： 当所述基站设备作为协同基站时， 接收业务网 关发送的协同用户设备的下行业务数据， 与所述协同组中的其他成员在相同 的时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户设 备。
本发明提出的协同传输数据的方法、 系统及基站设备， 解决了协同多点 传输中的下行业务数据分配中存在的问题， 使服务基站以及各协同基站能获 得协同用户的下行业务数据， 从而能对协同用户进行协同传输， 满足联合处 理方式的下行业务数据分配要求， 但不会对非协同用户的业务数据分配造成 任何影响。
附图概述 图 1为协同传输数据的方法中方案 1示意图； 图 2为协同传输数据的方法中方案 2示意图； 图 3为协同传输数据的方法流程图； 图 4为实例 1协同传输数据的方法处理流程图； 图 5为实例 2、 3、 4协同传输数据的方法处理流程图； 图 6为实例 5协同传输的系统方案 1结构示意图； 图 7为实例 6协同传输的系统方案 2结构示意图。
本发明的较佳实施方式 本文所提到的用户均指用户设备， 以下简称为用户。 针对协同多点传输中下行业务数据的分配方式， 提出以下方案： 方案 1 (参见图 1 )为： 服务基站根据用户反馈的信道质量信息， 判断是 否具有需要协同传输的协同用户， 从相邻基站（Adjacent Base Stations )中选 择出候选协同基站， 并向所述候选协同基站发送协同请求； 优选地， 协同请 求中包括服务基站要求候选协同基站为协同用户分配的资源信息； 所述候选 协同基站接收到协同请求后， 根据自身资源分配情况确定是否反馈协同请求 的协同确认信息给所述服务基站，所述服务基站根据接收到的协同确认信息， 确定所述协同用户的协同组成员， 服务基站将信息 （控制信令， 即用于请求 业务的控制信令）发送给业务网关时， 无需给业务网关上传协同组信息， 所 述控制信令主要是指用于请求业务的控制信令。 在本方案中， 协同组对业务 网关透明， 业务网关仅给所述服务基站下发所述协同用户的下行业务数据， 由服务基站把所述协同用户的下行业务数据传给协同基站， 包括服务基站与 方案延续当前 LTE中的下行业务数据分配方案， 对接入网侧增加额外处理。 方案 2 (参见图 2 )为： 服务基站根据用户反馈的信道质量信息， 判断是 否具有需要协同传输的协同用户， 从相邻基站中选择出候选协同基站， 并向 所述候选协同基站发送协同请求； 优选地， 协同请求中包括服务基站要求候 选协同基站为协同用户分配的资源信息； 所述候选协同基站接收到协同请求 后， 根据自身资源分配情况确定是否反馈协同请求的协同确认信息给所述服 务基站， 所述服务基站根据接收到的协同确认信息， 确定所述协同用户的协 同组成员， 服务基站将信息 （包括协同组信息和控制信令， 即用于指示所述 协同用户的协同组成员信息的控制信令和用于请求业务的控制信令）一并发 送给业务网关 （上述控制信令可以作为一条消息发送或者作为多条消息分别 发送） ， 业务网关向所述协同组所有成员下发该协同用户的下行业务数据， 所述协同组所有成员将获得的下行业务数据下发给所述协同用户。 本方案改 变了当前 LTE中的下行业务数据分配方案， 增强了业务网关能力。 在方案 2基础上一种特殊的方案是： 服务基站出于某种原因 （例如负荷 较重的情况下） ， 无法参与协同用户下行业务数据传输， 该服务基站在向业 务网关发送的用于指示协同组成员信息的控制信令中添加一指示信息， 用以 指示业务网关在下发所述协同用户的下行业务数据时， 不将下行业务数据发 送给该服务基站， 而是仅将协同用户的下行业务数据发送给协同基站， 由协 同组中的协同基站将下行业务数据下发给所述协同用户。 此种下行业务数据 分配方式也可以釆用预先约定的方式实现， 此时， 服务基站可不向业务网关 发送指示信息， 业务网关默认为仅向协同组成员中的协同基站发送下行业务 数据。 上述方案可以综合概括为如图 3所示的协同传输数据的方法， 其步骤如 下：
步骤 301 , 服务基站根据用户反馈的信道质量信息， 判断该用户是否为 需要协同传输的协同用户，若是，则从相邻基站中选择协同基站组建协同组； 判断是否有需要协同传输的协同用户的步骤包括： 所述服务基站将用户 反馈的信道质量信息 （Channel Quality Information )与预先设置的协同门限 比较， 当反馈的信道质量信息低于或等于协同门限时， 则确定所述用户为需 要协同传输的协同用户。 从相邻基站中选择协同基站组建协同组的步骤包括： 所述服务基站从相 邻基站中选出候选协同基站，并向该一个或多个候选协同基站发送协同请求， 协同请求中包括服务基站要求候选协同基站为协同用户分配的资源信息， 所 述候选协同基站接收到协同请求后， 根据自身资源分配情况确定是否反馈协 同请求的协同确认信息给所述服务基站， 所述服务基站根据接收到的协同确 认信息， 确定所述协同用户的协同组成员。 所述服务基站从相邻基站中选出候选协同基站可釆用如下方法： 服务基 站根据用户反馈的到相邻基站的测量信息， 选择信号最强的几个基站作为候 选协同基站。 其中， 协同组包括所述服务基站和至少一个协同基站。 步骤 302 , 业务网关根据所述服务基站上传的信息， 将下行业务数据下 发给所述协同组成员中的一个或多个， 发送给协同组成员中的多个包括发送 给协同组所有成员的情况和发送给协同组成员中的协同基站的情况； 其中， 服务基站上传的信息包括： 用于指示协同组成员信息的控制信令 和用于请求业务的控制信令， 或， 服务基站上传的信息包括用于请求业务的 控制信令； 服务基站确定所述协同组成员后， 进行联合资源调度， 包括： 由所述服 务基站决定具体调度， 确定分给协同用户的下行资源以及调制编码方式， 并 通知协同基站。 步骤 303 , 所述协同组成员 （协同组所有成员或协同组中协同基站）将 获得的下行业务数据下发给所述协同用户， 所述业务网关向服务基站和协同基站下发该协同用户的下行业务数据， 所述服务基站和协同基站将所述下行业务数据下发给所述协同用户； 或者， 所述业务网关根据接收到的服务基站上传的信息 （至少包括协同 组成员信息） ， 仅向协同基站下发该协同用户的下行业务数据， 所述协同基 站将所述下行业务数据下发给所述协同用户； 或者， 所述业务网关向服务基站下发该协同用户的下行业务数据， 所述 服务基站将下行业务数据传给协同基站， 包括服务基站和协同基站在内的协 同组所有成员将所述下行业务数据下发给所述协同用户； 所述下行业务数据下发给协同用户是指： 把新数据或子帧 n的重传数据 通过空口传给协同用户。
根据上述方法应用实例如下： 实例 1 : 图 1所示， 为方案 1的数据下发示意图， 方案 1的方法为， 业务网关对 于协同用户数据与非协同用户数据相同对待， 不做特别处理； 业务网关根据 用户所属服务基站， 将用户数据通过 S1 接口下发给该用户的服务基站， 从 而服务基站收到其服务范围内的协同用户数据与非协同用户数据： 对于非协同用户数据， 服务基站进行空口处理后通过发射天线传输给非 协同用户； 对于协同用户数据， 服务基站根据该用户的协同组成员信息， 将用户数 据通过 X2接口传给协同组内其他协同基站。 具体地： 服务基站首先组建协同组， 包括： 从相邻基站中挑选候选协同基站， 与 候选协同基站进行控制面协同控制信令交互， 最终确定协同组成员。 此时服 务基站与候选协同基站的控制面协同控制信令交互过程包括： 服务基站向候 选协同基站发送协同请求， 候选协同基站接收到请求后， 向服务基站反馈协 同请求的协同确认信息 （或拒绝协同信息）给服务基站。 服务基站根据控制 面协同控制信令交互结果确定协同组成员， 包括： 将发送协同确认信息的候 选协同基站确定为协同组成员中的协同基站。 服务基站向业务网关发送针对该协同用户的请求业务的控制信令后， 业 务网关向所述服务基站下发所述协同用户的下行业务数据， 服务基站把所述 协同用户的下行业务数据传给所述协同组中的协同基站， 在所有协同基站均 收到协同用户数据后， 所有协同组成员在相同的时频资源上对协同用户进行 下行业务数据传输。 需要说明的是， 上述服务基站发送控制信令的步骤与服务基站组建协同 组的步骤没有固定的先后关系。 根据图 4所示， 业务网关按照当前 LTE中规定的方式把用户数据通过 S1接口传给用户的服务基站（步骤 401 ) , 假设， 设定服务基站收到的用户 数据中包括用户 a的数据和用户 b的数据。 用户 a和用户 b向服务基站反馈信道质量信息 （步骤 402 ) ； 服务基站 根据用户 a、 b反馈的信道质量信息， 判定用户 a或用户 b是否需要协同传输 (步骤 403 ) ， 具体地， 服务基站将用户反馈的信道质量信息与系统事先设 置的协同门限比较， 当反馈的信道质量信息低于或等于协同门限时， 判定服 务基站自身已经无法为用户提供高质量的传输， 需要对用户进行协同传输， 据此判断出用户 a为协同用户， 需要由多个基站协同为其提供传输； 用户 b 仍然仅由服务基站提供传输， 为非协同用户。 服务基站根据用户 a上报的测量结果，初步选择由相邻的基站 1、基站 2 以及服务基站自身构成协同组共同为用户 a进行协同传输（步骤 405 ) 。 在 服务基站确定候选协同组成员后， 向候选协同组成员基站 1、 基站 2发送协 同请求（步骤 406 ) , 在等待时延内服务基站收到协同组成员基站 1、 基站 2 的协同确认信息 （步骤 407 ) ， 从而服务基站确定由服务基站自身、 基站 1 以及基站 2构成服务协同用户 a的协同组， 并且该协同组中服务基站为主， 基站 1、 基站 2为辅， 联合进行资源调度（步骤 409 ) 。 具体调度过程中， 服务基站根据基站 1、 基站 2通过协同确认信息上报 的资源分配情况， 并结合自己的资源分配情况确定有 5个时频资源块在这三 个基站上均空闲， 再根据用户 a上报的测量结果， 判断使用时频资源块 1、 2 时用户 a的信道条件最好， 满足判断条件； 因此服务基站确定把时频资源块 1、2调度给用户 a,同时确定用户 a在时频资源块 1、2上使用 QPSK( Quadrature Phase Shift Keying, 简称 QPSK, 四进制相移键控） 、 1/3编码速率最佳， 从 而服务基站把下行资源以及调制编码方式通知基站 1、 基站 2。 服务基站把业务网关下发的用户 a的下行业务数据通过 X2接口传给基 站 1、基站 2。向基站 1和基站 2传输下行业务数据的步骤只要在向用户设备 发送该下行业务数据的步骤之前完成即可。 从而服务基站、 基站 1、 基站 2根据分配给协同用户 a的下行资源以及 调制编码方式， 在相应时频资源块上把新数据或者子帧 n的重传数据通过空 口传给协同用户 a (步骤 410 ) 。 而对于非协同用户 b, 业务网关仅向服务基站下发该用户的下行业务数 据（步骤 408 ) ， 且因服务基站确定不对其进行协同传输， 因此服务基站无 需向其他基站分发用户 b的下行业务数据， 由服务基站对用户 b独立调度、 传输（步骤 404 ) 。 本应用实例中， 初始阶段用户 a、 b均为非协同用户， 随信道时变， 一段 时间后用户 a变成协同用户。 本实例为方案 1的应用实例， 用户 a、 b是否为 协同用户对业务网关透明，业务网关仅把用户 a、 b的下行业务数据分发给它 们的服务基站， 由服务基站根据用户的身份（即是否为协同用户） 以及协同 组成员信息来决定是否需要把业务网关传来的下行业务数据传给协同组其他 成员。 本实施例延续当前 LTE中的下行业务数据分配方案， 需对接入网侧增 加额外处理。 上述实施例中， 服务基站组建协同组时， 协同组成员可以包括服务基站 和协同基站 2 , 或者， 协同基站 1和协同基站 2, 或者至少一个协同基站， 总 之， 不管协同组包括哪些节点， 都可以釆用同样的方法实现。
实例 2: 图 2所示， 为方案 2的数据下发示意图， 方案 2的方法为， 对于非协同 用户数据， 业务网关通过 S1 接口下发给该用户的服务基站。 而对于协同用 户数据， 服务基站判断协同用户以及组建协同组的方法与实施例 1相同。 区 别在于， 服务基站将协同组成员信息发送给业务网关， 这样， 业务网关可通 过 SI 接口将协同用户的下行业务数据下发给协同组内所有成员， 包括服务 基站以及一个或多个协同基站， 这样， 协同组内所有基站都直接从业务网关 收到了协同用户数据， 从而服务基站与协同基站间不再需要传输协同用户下 行业务数据。 控制面交互协同控制信令的方法与实例 1相同， 在完成协同控 制信令交互后， 服务基站和各协同基站， 或者各协同基站在相同的时频资源 上对协同用户进行下行传输。 本方案 2中因业务网关不仅要把协同用户数据传给该协同用户的服务基 站， 还要传给该协同用户的协同基站， 因此需要协同用户的服务基站把协同 组成员信息告知业务网关。 如图 5流程图所示，业务网关按照当前 LTE中规定的方式把用户数据通 过 S1接口传给用户的服务基站 (步骤 501 )； 为清晰起见， 假定服务基站收 到的用户数据中包括用户 a的数据以及用户 b的数据。 用户 a和用户 b向服务基站反馈信道质量信息 (步骤 502 ) ； 服务基站 根据用户 a、 b反馈的信道质量信息， 判定用户 a或用户 b是否需要协同传输 (步骤 503 ) ， 具体地， 服务基站判定因信道时变， 该服务基站自身已经无 法为用户 a提供高质量的传输， 需要对用户 a进行协同传输， 从而用户 a变 为协同用户； 用户 b仍然仅由服务基站提供传输， 仍为非协同用户。 服务基站根据用户 a上报的测量结果，初步选择由相邻的基站 1、基站 2 以及服务基站自身构成协同组共同为用户 a进行协同传输（步骤 505 ) 。 在 服务基站确定候选协同组成员后， 向候选协同组成员基站 1、 基站 2发送协 同请求（步骤 506 ) , 在等待时延内服务基站收到协同组成员基站 1、 基站 2 的协同确认信息 （步骤 507 ) ， 从而服务基站确定由服务基站自身、 基站 1 以及基站 2构成服务协同用户 a的协同组。 服务基站把用户 a的协同组成员信息通过 S1接口传给业务网关 （步骤 509 ) ,从而业务网关知道服务基站、基站 1、基站 2为用户 a的协同组成员， 则在收到该协同组不再服务于用户 a的信令之前， 业务网关把用户 a的下行 业务数据业务分发给用户 a协同组内的各个成员基站（步骤 510 ) , 具体可 以釆用多播方式实现， 保证协同组各成员同时收到业务网关下发的协同用户 a的下行业务数据。 从而由服务基站为主， 基站 1、 基站 2为辅， 联合进行资源调度（步骤 511 ) , 具体调度过程中，服务基站根据基站 1、基站 2上报的资源分配情况， 并结合自己的资源分配情况确定有 5个时频资源块在这三个基站上均空闲， 根据用户 a上报的测量结果， 在时频资源块 1、 2、 3上用户 a到服务基站的 信道条件最好， 在时频资源块 1、 2、 4上用户 a到基站 1、 基站 2的信道条 件最好， 服务基站确定把时频资源块 1、 2调度给用户 a, 同时确定用户 a在 时频资源块 1、 2上使用 16QAM ( Quadrature Amplitude Modulation, 简称 QAM, 正交振幅调制） 、 1/2编码速率最佳， 从而服务基站把下行资源以及 调制编码方式通知基站 1、基站 2。 最终， 服务基站、基站 1和基站 2在相应 时频资源上把新数据或者子帧 n的重传数据通过空口传给协同用户 a (步骤 512 ) 。 而对于非协同用户 b, 因服务基站确定不对其进行协同传输， 因此业务 网关对用户 b的下行业务数据仍然传给服务基站 （步骤 508 ) , 由服务基站 对用户 b独立调度、 传输（步骤 504 ) 。 本应用实例中， 初始阶段用户 a、 b均为非协同用户， 随信道时变， 用户 a变成协同用户。 本实例为釆用方案 2的应用实例， 需要通知业务网关协同 用户的协同组成员信息， 从而业务网关把协同用户的后续下行业务数据同时 传给协同组内各成员，协同组以服务基站为主、协同基站为辅进行资源调度， 之后协同组成员共同为协同用户传输下行业务数据， 因网关直接多点下发， 服务基站与协同基站之间无需交互协同用户的下行业务数据， 改进了当前 LTE中的下行业务数据分配方案， 增强网关能力。
实例 3: 也釆用方案 2的方法， 数据下发示意图如图 2, 其中业务网关、 服务基 站、 协同基站及协同用户功能同实例 2。 流程图如图 5所示，业务网关按照当前 LTE中规定的方式把用户数据通 过 S1接口传给用户的服务基站（步骤 501 ) , 为清晰起见， 假定服务基站收 到的用户数据中包括用户 a的数据以及用户 b的数据。 用户 a和用户 b向服务基站反馈信道质量信息 (步骤 502 ) ； 服务基站 根据用户 a、 b反馈的信道质量信息， 判定用户 a或用户 b是否需要协同传输 (步骤 503 ) ， 具体地， 服务基站判定因信道时变， 该服务基站自身已经无 法为用户 a提供高质量的传输， 需要对用户 a进行协同传输， 从而用户 a变 为协同用户； 用户 b仍然仅由服务基站提供传输， 仍为非协同用户。 服务基站根据用户 a上报的测量结果，初步选择由相邻的基站 1、基站 2 以及服务基站自身构成协同组共同为用户 a进行协同传输（步骤 505 ) 。 在 服务基站确定候选协同组成员后， 需要向候选协同组成员基站 1、 基站 2发 送协同请求（步骤 506 ) , 在等待时延内服务基站收到了基站 1的协同确认 信息， 没有收到基站 2的协同确认信息 （步骤 507 ) 。 因此服务基站确定由 服务基站自身和基站 1构成协同组来为用户 a服务。 服务基站把用户 a的协同组成员信息通过 S1接口传给业务网关 （步骤 509 ) , 从而业务网关知道服务基站、 基站 1为用户 a的协同组成员， 则在收 到该协同组不再服务于用户 a的信令之前， 业务网关将用户 a的下行业务数 据业务下发给用户 a协同组内的各个成员基站（步骤 510 ) , 即发给服务基 站以及基站 1 ; 具体可以釆用多播方式发送， 能保证协同组各成员同时收到 业务网关下发的协同用户 a的下行业务数据。 由服务基站为主， 基站 1为辅， 联合进行资源调度（步骤 511 ) , 具体 调度过程中， 服务基站根据基站 1、 基站 2上报的资源分配情况， 并结合自 己的资源分配情况确定有 5个时频资源块在这三个基站上均空闲， 根据用户 a上报的测量结果， 在时频资源块 1、 2、 3上用户 a到服务基站的信道条件 最好， 在时频资源块 1、 2、 4上用户 a到基站 1、 基站 2的信道条件最好， 服务基站确定把时频资源块 1、 2调度给用户 a, 同时确定用户 a在时频资源 块 1、 2上使用 16QAM、 1/2编码速率最佳， 从而服务基站把下行资源以及 调制编码方式通知基站 1 ; 在相应时频资源上， 服务基站和基站 1把新数据 或者子帧 n的重传数据通过空口传给协同用户 a (步骤 512 ) 。 而对于非协同用户 b, 因服务基站确定不对其进行协同传输， 因此业务 网关对用户 b的下行业务数据仍然传给服务基站 （步骤 508 ) , 由服务基站 对用户 b独立调度、 传输（步骤 504 ) 。 本应用实例中， 初始阶段用户 a、 b均为非协同用户， 随信道时变， 用户 a变成协同用户。 本实例为釆用方案 2的应用实例， 需要通知业务网关协同 用户的协同组成员信息， 从而业务网关把协同用户的下行业务数据同时下发 给协同组内各成员， 协同组以服务基站为主、 协同基站为辅进行资源调度， 之后，协同组成员共同为协同用户传输下行业务数据， 因网关直接多点下发， 服务基站与协同基站之间无需交互协同用户的下行业务数据， 改进了当前 LTE中的下行业务数据分配方案， 增强网关能力。
实例 4: 也釆用方案 2的方法， 数据下发示意图如图 2, 其中业务网关、 服务基 站、 协同基站及协同用户功能同实例 2。 流程图如图 5所示，业务网关按照当前 LTE中规定的方式把用户数据通 过 S1接口传给用户的服务基站 (步骤 501 ) ， 为清晰起见， 假定服务基站收 到的用户数据中包括用户 a的数据以及用户 b的数据。 用户 a和用户 b向服务基站反馈信道质量信息 (步骤 502 ) ； 服务基站 根据用户 a、 b反馈的信道质量信息， 判定用户 a或用户 b是否需要协同传输 (步骤 503 ) ， 具体地， 服务基站判定因信道时变， 服务基站自身已经无法 为用户 a提供高质量的传输， 需要对用户 a进行协同传输， 从而用户 a变为 协同用户； 用户 b仍然仅由服务基站提供传输， 仍为非协同用户。 服务基站根据用户 a上报的测量结果，初步选择由相邻的基站 1、基站 2 以及服务基站自身构成协同组共同为用户 a进行协同传输（步骤 505 ) 。 在 服务基站确定候选协同组成员后， 需要向候选协同组成员基站 1、 基站 2发 送协同请求（步骤 506 ) ， 在等待时延内服务基站收到了基站 1的协同确认 信息、 基站 2的协同请求的协同确认信息 （步骤 507 ) 。 因此服务基站确定 由服务基站自身和基站 1及基站 2构成协同组来为用户 a服务。 服务基站把用户 a的协同组成员信息通过 S1接口传给业务网关 （步骤 509 ) ,从而业务网关知道服务基站、基站 1、基站 2为用户 a的协同组成员， 则在收到该协同组不再服务于用户 a的信令之前， 业务网关把用户 a的下行 业务数据业务分发给用户 a协同组内的各个成员基站（步骤 510 ) , 即发给 服务基站以及基站 1。 具体可以釆用多播方式发送， 能保证协同组各成员同 时收到业务网关下发的协同用户 a的下行业务数据。 由服务基站为主，基站 1、基站 2为辅，联合进行资源调度 (步骤 511 ) , 具体调度过程中， 服务基站没有能够给用户 a分配的资源， 而基站 1、基站 2 有 5个时频资源块空闲， 其中时频资源块 1、 2到用户 a的信道条件最好， 因 此服务基站确定把时频资源块 1、 2调度给用户 a, 同时确定用户 a在时频资 源块 1、 2上使用 16QAM、 1/2编码速率最佳， 从而服务基站把下行资源以 及调制编码方式通知基站 1、基站 2。 最终， 在相应时频资源上由基站 1和基 站 2把新数据或者子帧 n的重传数据通过空口传给协同用户 a (步骤 512 ) 。 服务基站作为协同组的主控基站， 只进行调度以及控制信令的收发， 不参与 业务数据传输。 而对于非协同用户 b, 因服务基站确定不对其进行协同传输， 因此业务 网关对用户 b的下行业务数据仍然传给服务基站 （步骤 508 ) , 由服务基站 对用户 b独立调度、 传输（步骤 504 ) 。 本应用实例中， 初始阶段用户 a、 b均为非协同用户， 随信道时变， 用户 a变成协同用户。 本实例为釆用方案 2的应用实例， 需要通知业务网关协同 用户的协同组成员信息， 从而业务网关把协同用户的下行业务数据同时下发 给协同组内各成员， 协同组以服务基站为主、 协同基站为辅进行资源调度， 之后， 由协同基站为协同用户传输下行业务数据。 因网关直接多点下发， 月良 务基站与协同基站之间无需交互协同用户的下行业务数据， 改进了当前 LTE 中的下行业务数据分配方案， 增强网关能力。
实例 5 一种协同传输数据的系统， 如图 6所示， 包括， 收发模块 10、 服务模块 20、 协同模块 30、 协同用户 40; 服务模块 20, 根据用户反馈的信道质量信息， 判断是否具有需要协同传 输的用户， 若有， 则服务模块组建协同组， 向收发模块 10发送信息， 所述协 同组成员将接收到所述收发模块下发的下行业务数据下发给所述协同用户 40; 收发模块 10, 根据服务模块上传的信息， 将下行业务数据下发给所述协 同组成员， 协同组成员将获得的下行业务数据下发给所述协同用户； 协同模块 30,接收所述服务模块或所述收发模块下发的协同用户的下行 业务数据； 协同用户 40,将反馈的信道质量信息上传给服务模块 20,接收所述服务 模块 20或所协同模块 30下发的协同用户的下行业务数据； 所述服务模块 20还包含判断单元 201 ,用于判断是否具有需要协同传输 的用户， 根据用户反馈的信道质量信息与设置的协同门限比较， 当反馈的信 道质量信息低于或等于协同门限时， 则对所述用户进行协同传输， 所述用户 成为所述协同传输的用户； 所述服务模块 20还包含选择单元 202,用于向从相邻基站中选择出的候 选协同模块， 并向该候选协同模块发送协同请求， 所述候选协同模块接收到 协同请求后， 根据自身资源分配情况确定是否反馈协同请求的协同确认信息 给选择单元 202,所述选择单元 202根据接收到的协同请求的协同确认信息， 确定所述协同用户模块的协同组； 所述服务模块 20还包含控制单元 203 , 用于向协同组所有协同模块 30 发送协同请求，所述协同组所有协同模块 30确认后反馈所述控制单元； 以服 务模块为主， 协同单元为辅， 由所述控制单元决定具体调度， 确定分给协同 单元的下行资源以及调制编码方式， 同时通知协同单元； 所述服务模块 20还包含业务数据收发单元 204,用于将所述用户协同组 信息通过 S1接口上传给收发模块 10;将所述收发模块 10下发的下行业务数 据通过 X2接口在相同的时频资源上对协同用户进行下行业务数据传输。 如图 6所示： 实施方案 1的系统为： 接收模块 10 , 将用户 a、 b下行业 务数据下发给所述用户的服务模块 20, 并根据所述服务模块 20反馈的协同 组信息， 将协同用户的下行业务数据下发给协同组内的服务模块 20; 服务模块 20 , 将所述接收模块下发的用户 a、 b的下行业务数据传给相 邻基站，判断需要协同传输的用户，判断单元 201判断需要协同传输的用户， 判断单元 201根据用户反馈的信道质量信息与设置的协同门限比较， 当反馈 的信道质量信息低于或等于协同门限时，为需要对所述用户 a进行协同传输， 所述用户 a变为所述协同传输的用户， 用户 b为非协同用户； 服务模块 20还包含选择单元，该模块主要的任务为组建协同组，服务模 块为主， 协同单元 301和协同单元 302为辅； 服务模块 20还包含控制单元 203 ,所述控制信令模块 203向协同组所有 协同模块 30发送协同请求，所述协同组所有协同模块确认后反馈所述控制单 元 203 , 所述协同组联合进行资源调度， 并由所述选择单元决定具体调度， 确定分给协同用户的下行资源以及调制编码方式， 并通知协同模块 30； 所述服务模块 20还包含业务数据收发单元 204,所述业务数据收发单元 204向收发模块 10上传所述用户协同组信息， 所述用户协同组信息通过 S1 接口上传给收发模块 10; 所述业务数据收发收发 204将所述收发模块下发的 下行业务数据通过 X2接口在相同的时频资源上对协同用户进行下行业务数 据传输。 假设， 组建协同组共同为协同用户 a进行协同传输， 确定把时频资源块 1、2调度给协同用户 a,同时确定协同用户 a在时频资源块 1、2上使用 QPSK、 1/3 编码速率最佳， 服务模块把下行资源以及调制编码方式通知协同模块， 在此同时，服务模块 20把收发模块 10下发的用户 a的下行业务数据通过 X2 接口也传给协同模块 30。 从而服务模块 20、 协同模块 30根据分给协同用户 a的下行资源以及调制编码方式， 在相应时频资源块上把子帧 n的重传数据 或新数据通过空口传给协同用户 a, 在相同的时频资源上对协同用户 a进行 下行业务数据传输， 延续当前 LTE中的下行业务数据分配方案，对接入网侧 增加额外处理。 上述实施例中，服务模块组建协同组时，协同组成员还有以下情况组成， 包括服务模块和协同单元 302, 或者， 协同单元 301和协同单元 302 , 或者至 少一个协同单元， 都可以用上述的方法实现。
实例 6 还提供一种协同传输的系统， 如图 7所示， 包括， 接收模块 10、 服务模 块 20、 协同模块 30、 协同用户模块 40 实施方案 2的系统为： 收发模块 10 , 将用户 a、 b下行业务数据下发给 所述用户的服务模块 20, 并根据所述服务模块 20反馈的协同组信息， 将协 同用户的下行业务数据下发给协同组内的所有成员， 将协同用户的下行业务 数据下发给协同组内的服务模块 20和协同模块 30; 或着， 将协同用户的下 行业务数据下发给协同组内的至少一个协同模块 30； 服务模块 20 , 将所述收发模块下发的用户 a、 b的下行业务数据传给相 邻基站， 判断需要协同传输的用户， 判断单元 201 , 判断需要协同传输的用 户， 判断单元 201根据用户反馈的信道质量信息与设置的协同门限比较， 当 反馈的信道质量信息低于或等于协同门限时， 为需要对所述用户 a进行协同 传输， 所述用户 a变为所述协同传输的用户， 用户 b为非协同用户； 所述服务模块 20还包含选择单元，组建所述协同组，服务模块 20为主， 协同模块 301和协同模块 302为辅； 所述服务模块 20还包含控制信令单元 203 ,所述控制信令单元 203向协 同组所有协同模块 30发送协同请求，所述协同组所有协同模块确认后反馈所 述控制单元 203 , 所述协同组联合进行资源调度， 并由所述选择单元决定具 体调度， 确定分给协同用户的下行资源以及调制编码方式， 并通知协同模块 30; 所述服务模块 20还包含业务数据收发单元 204,用于向接收模块上传所 述用户协同组信息， 所述用户协同组信息通过 S1接口上传给收发模块 10; 所述业务数据收发模块 204 将所述接收模块下发的下行业务数据通过 X2接 口在相同的时频资源上对协同用户进行下行业务数据传输。 假设， 服务模块 20把用户 a的协同组信息通过 S1接口传给接收模块， 从而收发模块知道服务模块、 协同单元 301、 协同单元 302为用户 a的协同 组信息， 则在收到该协同组不再服务用户 a的信令之前， 收发模块把用户 a 的下行业务数据下发给用户 a协同组内的各个成员， 具体可以釆用多播方式 实现，能保证协同组各成员同时收到接收模块下发的协同用户下行业务数据。 从而由服务模块 20为主， 协同模块 301、 协同模块 302为辅， 联合进行 资源调度， 具体调度过程中， 服务模块 20根据协同单元 301、 协同单元 302 上报的资源分配情况， 并结合自己的资源分配情况确定有 5个时频资源块在 这三个模块上均空闲， 根据用户 a上报的测量结果， 在时频资源块 1、 2、 3 上用户 a到服务模块的信道条件最好， 在时频资源块 1、 2、 4上用户 a到协 同模块 301、 协同模块 302的信道条件最好， 服务模块确定把时频资源块 1、 2调度给用户 a, 同时确定用户 a在时频资源块 1、 2上使用 16QAM、 1/2编 码速率最佳，从而服务模块把下行资源以及调制编码方式通知协同单元 301、 协同单元 302。 在相应时、 频资源上把子帧 n的重传数据或新数据通过空口 传给协同用户 a; 延续当前 LTE中的下行业务数据分配方案， 对接入网侧增 加额外处理。 上述实施例中，服务模块组建协同组时，协同组成员还有以下情况组成， 包括服务模块和协同单元 302, 或者， 协同单元 301和协同单元 302 , 或者至 少一个协同单元， 都可以用上述的方法实现。
上述实例 5和 6的系统可以概括为： 一种协同传输数据的系统，其包括： 收发模块， 服务模块和协同模块， 其中： 所述服务模块设置为： 模式 I： 根据用户设备反馈的信道质量信息， 判 断所述用户设备是否为需要协同传输的协同用户设备， 若是， 则组建所述协 同用户设备的协同组， 所述协同组包括服务模块以及至少一个协同模块， 每 个模块为协同组中的一个成员； 向所述收发模块上传信息； 或者， 所述 Λ良务 模块设置为： 模式 II： 根据用户设备反馈的信道质量信息， 判断所述用户设 备是否为需要协同传输的协同用户设备， 若是， 则组建所述协同用户设备的 协同组， 所述协同组包括服务模块以及至少一个协同模块， 每个模块为协同 组中的一个成员； 向所述收发模块上传信息； 作为所述协同组成员接收所述 收发模块下发的所述协同用户设备的下行业务数据， 与其他参与协同传输的 协同组成员一起将所述下行业务数据下发给所述协同用户设备； 所述收发模块设置为： 根据所述服务模块上传的信息， 将协同用户设备 的下行业务数据下发给协同组中的一个或多个成员； 所述协同模块设置为： 接收所述服务模块或所述收发模块下发的所述协 同用户设备的下行业务数据， 将获得的所述下行业务数据下发给所述协同用 户设备。 优选地， 当所述服务模块设置为模式 I时： 所述服务模块向收发模块上 传的信息包括： 用于指示所述协同用户设备协同组成员信息的控制信令和用 于请求业务的控制信令； 所述收发模块还设置为： 当所述服务模块设置为模 式 I时， 才艮据所述协同用户设备的协同组成员信息， 将所述协同用户设备的 下行业务数据下发给所述协同组中除服务模块外的所有成员。 此时， 所述参 与协同传输的协同组成员包括： 接收到所述协同用户设备的下行业务数据的 协同组成员。 优选地， 当所述服务模块设置为模式 II时： 所述向收发模块上传的信息 包括： 用于指示所述协同用户设备协同组成员信息的控制信令和用于请求业 务的控制信令； 所述收发模块还设置为： 当所述服务模块设置为模式 II时， 根据所述协同用户设备的协同组成员信息， 将所述协同用户设备的下行业务 数据下发给所述协同组中的所有成员； 此时， 所述参与协同传输的协同组成 员包括： 接收到所述协同用户设备的下行业务数据的协同组成员。 优选地， 当所述服务模块设置为模式 II时： 所述向收发模块上传的信息 包括： 用于请求业务的控制信令； 所述收发模块还设置为： 当所述服务模块 设置为模式 II时， 根据所述控制信令， 将所述协同用户设备的下行业务数据 下发给所述协同组中的服务模块； 所述服务模块还设置为： 在所述模式 II中 接收所述收发模块下发的所述协同用户设备的下行业务数据后， 还将所述下 行业务数据发送给所述协同组中的协同模块； 此时， 所述参与协同传输的协 同组成员包括： 服务模块以及接收到所述下行业务数据的协同模块。
实例 7 实现上述方法的基站设备， 其包括： 服务模块和协同模块， 其中： 所述服务模块设置为： 当所述基站设备作为服务基站时， 根据用户设备 反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户设 备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站以 及至少一个协同基站； 向业务网关上传协同用户设备请求业务的控制信令； 将接收到的所述业务网关下发的所述协同用户设备的下行业务数据发送给协 同组中的协同基站， 与所述协同组中的协同基站在相同的时频资源上将所述 协同用户设备的下行业务数据下发给所述协同用户设备； 所述协同模块设置为： 当所述基站设备作为协同基站时， 接收服务基站 发送的协同用户设备的下行业务数据， 与所述协同组中的服务基站在相同的 时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户设备。 优选地， 所述服务模块包括： 判断单元、 选择单元、 控制单元以及业务 数据收发单元， 其中： 判断单元， 其设置为： 将用户设备反馈的信道质量信息与预设的协同门 限比较， 以判断所述用户设备是否为需要协同传输的协同用户设备， 当反馈 的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要进行协 同传输， 所述用户设备为协同用户设备； 选择单元， 其设置为： 选择候选协同基站， 向所述候选协同基站发送协 同请求， 根据接收到的候选协同基站发送的协同确认信息， 确定所述协同用 户设备的协同组成员； 控制单元， 其设置为： 与协同组中的协同基站进行联合资源调度， 以确 定分配给所述协同用户设备的下行资源以及调制编码方式， 并将资源调度结 果通知所述协同组中的协同基站； 以及 业务数据收发单元， 其设置为： 将所述业务网关下发的下行业务数据通 过 X2接口发送给协同组中的协同基站， 并与所述协同基站在相同的时频资 源上将所述下行业务数据下发给所述协同用户设备。 优选地， 所述服务模块还包括资源调度单元， 其设置为： 与协同组其他 成员进行联合资源调度， 以确定分配给所述协同用户设备的下行资源以及调 制编码方式，并通过收发单元将资源调度结果通知所述协同组中的协同基站。
实例 8 实现上述方法的另一种基站设备， 其包括： 服务模块和协同模块， 其中： 所述服务模块设置为： 当所述基站设备作为服务基站时， 根据用户设备 反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户设 备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站以 及至少一个协同基站； 向业务网关上传协同用户设备请求业务的控制信令以 及用于指示协同组成员信息的控制信令； 所述协同模块设置为： 当所述基站设备作为协同基站时， 接收业务网关 发送的协同用户设备的下行业务数据， 与所述协同组中的其他协同基站在相 同的时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户设 备。
优选地， 所述服务模块包括： 判断单元、 选择单元、 控制单元以及业务 数据收发单元， 其中： 判断单元， 其设置为： 将用户设备反馈的信道质量信息与预设的协同门 限比较， 以判断所述用户设备是否为需要协同传输的协同用户设备， 当反馈 的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要进行协 同传输， 所述用户设备为协同用户设备； 选择单元， 其设置为： 选择候选协同基站， 向所述候选协同基站发送协 同请求， 根据接收到的候选协同基站发送的协同确认信息， 确定所述协同用 户设备的协同组成员； 控制单元， 其设置为： 与协同组中的协同基站进行联合资源调度， 以确 定分配给所述协同用户设备的下行资源以及调制编码方式， 并将资源调度结 果通知所述协同组中的协同基站； 以及 业务数据收发单元， 其设置为： 将所述协同用户设备的协同组成员信息 通过 S1接口上传给所述业务网关。 优选地， 所述服务模块还包括资源调度单元， 其设置为： 与协同组其他 成员进行联合资源调度， 以确定分配给所述协同用户设备的下行资源以及调 制编码方式，并通过收发单元将资源调度结果通知所述协同组中的协同基站。
实例 9 所述服务模块设置为： 当所述基站设备作为服务基站时， 根据用户设备 反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户设 备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站以 及至少一个协同基站； 向业务网关上传协同用户设备请求业务的控制信令以 及用于指示协同组成员信息的控制信令， 接收所述业务网关下发的所述协同 用户设备的下行业务数据， 与所述协同组中的协同基站在相同的时频资源上 将所述协同用户设备的下行业务数据下发给所述协同用户设备； 所述协同模块设置为： 当所述基站设备作为协同基站时， 接收业务网关 发送的协同用户设备的下行业务数据， 与所述协同组中的其他成员在相同的 时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户设备。 优选地， 所述服务模块包括： 判断单元、 选择单元、 控制单元以及业务 数据收发单元， 其中： 判断单元， 其设置为： 将用户设备反馈的信道质量信息与预设的协同门 限比较， 以判断所述用户设备是否为需要协同传输的协同用户设备， 当反馈 的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要进行协 同传输， 所述用户设备为协同用户设备； 选择单元， 其设置为： 选择候选协同基站， 向所述候选协同基站发送协 同请求， 根据接收到的候选协同基站发送的协同确认信息， 确定所述协同用 户设备的协同组成员； 控制单元， 其设置为： 与协同组中的协同基站进行联合资源调度， 以确 定分配给所述协同用户设备的下行资源以及调制编码方式， 并将资源调度结 果通知所述协同组中的协同基站； 以及 业务数据收发单元， 其设置为： 将所述协同用户设备的协同组成员信息 通过 S1 接口上传给所述业务网关， 接收所述业务网关下发的所述协同用户 设备的下行业务数据， 与所述协同组中的协同基站在相同的时频资源上将所 述下行业务数据下发给所述协同用户设备。 优选地， 所述服务模块还包括资源调度单元， 其设置为： 与协同组其他 成员进行联合资源调度， 以确定分配给所述协同用户设备的下行资源以及调 制编码方式，并通过收发单元将资源调度结果通知所述协同组中的协同基站。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保护 范围， 对于本领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本 发明的精神和原则之内所作的任何修改、 等同替换、 改进等， 均应包含在本 发明的保护范围之内。
工业实用性 本发明提出的协同传输数据的方法及系统， 解决了协同多点传输中的下 行业务数据分配中存在的问题， 使服务基站以及各协同基站能获得协同用户 的下行业务数据， 从而能对协同用户进行协同传输， 满足联合处理方式的下 行业务数据分配要求， 但不会对非协同用户的业务数据分配造成任何影响。

Claims

权 利 要 求 书
1、 一种协同传输数据的方法， 其包括： 服务基站根据用户设备反馈的信道质量信息， 判断所述用户设备是否为 需要协同传输的协同用户设备， 若是， 则所述服务基站组建所述协同用户设 备的协同组； 业务网关根据所述服务基站上传的信息， 将所述协同用户设备的下行业 务数据下发给所述协同组中的一个或多个成员， 参与协同传输的协同组成员 获得所述协同用户设备的下行业务数据后， 将获得的所述下行业务数据下发 给所述协同用户设备。
2、 根据权利要求 1所述的方法， 其中， 所述协同组包括所述服务基站和至少一个协同基站， 每个基站为协同组 中的一个成员。
3、 根据权利要求 2所述的方法， 其中， 所述服务基站上传的信息包括： 用于指示所述协同用户设备协同组成员 信息的控制信令和用于请求业务的控制信令； 所述业务网关根据所述服务基站上传的信息， 将所述协同用户设备的下 行业务数据下发给所述协同组中的一个或多个成员的步骤包括： 所述业务网 关根据所述协同用户设备的协同组成员信息， 将所述协同用户设备的下行业 务数据下发给所述协同组中的所有成员， 或者下发给所述协同组中除服务基 站外的所有成员； 所述参与协同传输的协同组成员包括： 接收到所述协同用户设备的下行 业务数据的协同组成员。
4、 根据权利要求 2所述的方法， 其中， 所述服务基站上传的信息包括： 用于请求业务的控制信令； 所述业务网关根据所述服务基站上传的信息， 将所述协同用户设备的下 行业务数据下发给所述协同组中的一个或多个成员的步骤包括： 所述业务网 关根据所述控制信令， 将所述协同用户设备的下行业务数据下发给所述协同 组中的服务基站。
5、 根据权利要求 4所述的方法， 其中， 所述业务网关将所述下行业务数据下发给所述协同组中的服务基站之 后， 所述方法还包括： 所述服务基站将所述下行业务数据发送所述协同组中 所有协同基站； 所述参与协同传输的协同组成员包括： 服务基站以及接收到所述下行业 务数据的协同基站。
6、 根据权利要求 1-5中任一权利要求所述的方法， 其中， 所述判断用户设备是否为需要协同传输的协同用户设备的步骤包括： 所 述服务基站将所述用户设备反馈的信道质量信息与预设的协同门限比较， 当 反馈的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要协 同传输， 所述用户设备为协同用户设备。
7、 根据权利要求 1-5中任一权利要求所述的方法， 其中， 所述服务基站组建所述协同用户设备的协同组的步骤包括： 所述服务基 站从相邻基站中选出候选协同基站， 向所述候选协同基站发送协同请求， 所 述候选协同基站接收到所述协同请求后， 根据自身资源分配情况确定是否反 馈所述协同请求的协同确认信息给所述服务基站； 所述服务基站根据接收到 的协同确认信息， 确定所述协同用户设备的协同组成员。
8、 根据权利要求 7所述的方法， 其中， 所述协同请求包括： 所述服务基站要求候选协同基站为所述协同用户分 配的资源信息。
9、 根据权利要求 7所述的方法， 其中， 所述服务基站确定所述协同用户设备的协同组成员后，所述方法还包括： 所述协同组成员进行联合资源调度， 以确定分配给协同用户设备的下行 资源以及调制编码方式， 联合资源调度完成后， 将资源调度结果通知所述协 同组中的协同基站。
10、 一种协同传输数据的系统， 其包括： 收发模块、 服务模块和协同模 块， 其中： 所述服务模块设置为： 模式 I： 根据用户设备反馈的信道质量信息， 判 断所述用户设备是否为需要协同传输的协同用户设备， 若是， 则组建所述协 同用户设备的协同组， 所述协同组包括服务模块以及至少一个协同模块， 每 个模块为协同组中的一个成员； 向所述收发模块上传信息； 或者， 所述 Λ良务 模块设置为： 模式 II： 根据用户设备反馈的信道质量信息， 判断所述用户设 备是否为需要协同传输的协同用户设备， 若是， 则组建所述协同用户设备的 协同组， 所述协同组包括服务模块以及至少一个协同模块， 每个模块为协同 组中的一个成员； 向所述收发模块上传信息； 作为所述协同组成员接收所述 收发模块下发的所述协同用户设备的下行业务数据， 与其他参与协同传输的 协同组成员一起将所述下行业务数据下发给所述协同用户设备； 所述收发模块设置为： 根据所述服务模块上传的信息， 将协同用户设备 的下行业务数据下发给协同组中的一个或多个成员； 所述协同模块设置为： 接收所述服务模块或所述收发模块下发的所述协 同用户设备的下行业务数据， 将获得的所述下行业务数据下发给所述协同用 户设备。
11、 根据权利要求 10所述的系统， 其中， 当所述服务模块设置为模式 I时： 所述向收发模块上传的信息包括： 用 于指示所述协同用户设备协同组成员信息的控制信令和用于请求业务的控制 信令； 所述收发模块还设置为： 当所述服务模块设置为模式 I时， 根据所述协 同用户设备的协同组成员信息， 将所述协同用户设备的下行业务数据下发给 所述协同组中除服务模块外的所有成员； 所述参与协同传输的协同组成员包括： 接收到所述协同用户设备的下行 业务数据的协同组成员。
12、 根据权利要求 10所述的系统， 其中， 当所述服务模块设置为模式 II时： 所述向收发模块上传的信息包括： 用 于指示所述协同用户设备协同组成员信息的控制信令和用于请求业务的控制 信令； 所述收发模块还设置为： 当所述服务模块设置为模式 II时， 根据所述协 同用户设备的协同组成员信息， 将所述协同用户设备的下行业务数据下发给 所述协同组中的所有成员； 所述参与协同传输的协同组成员包括： 接收到所述协同用户设备的下行 业务数据的协同组成员。
13、 根据权利要求 10所述的系统， 其中， 当所述服务模块设置为模式 II时： 所述向收发模块上传的信息包括： 用 于请求业务的控制信令； 所述收发模块还设置为： 当所述服务模块设置为模式 II时， 根据所述控 制信令， 将所述协同用户设备的下行业务数据下发给所述协同组中的服务模 块； 所述服务模块还设置为： 在所述模式 II中接收所述收发模块下发的所述 协同用户设备的下行业务数据后， 还将所述下行业务数据发送给所述协同组 中的协同模块； 所述参与协同传输的协同组成员包括： 服务模块以及接收到所述下行业 务数据的协同模块。
14、 根据权利要求 10或 11或 12或 13所述的系统， 其中， 所述服务模块包括： 判断单元、 选择单元、 控制单元以及业务数据收发 单元， 其中： 所述判断单元设置为： 将用户设备反馈的信道质量信息与预设的协同门 限比较， 以判断所述用户设备是否为需要协同传输的协同用户设备， 当反馈 的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要进行协 同传输， 所述用户设备为协同用户设备； 所述选择单元设置为： 选择候选协同模块， 向所述候选协同模块发送协 同请求， 根据接收到的候选协同模块发送的协同确认信息， 确定所述协同用 户设备的协同组成员； 所述控制单元设置为： 与协同组中的协同模块进行联合资源调度， 以确 定分配给所述协同用户设备的下行资源以及调制编码方式， 并将资源调度结 果通知所述协同组中的协同模块； 所述业务数据收发单元设置为： 通过 S1接口向所述收发模块上传信息； 所述协同模块还设置为： 在接收到服务模块发送的协同请求后， 根据自 身资源分配情况确定是否反馈所述协同请求的协同确认信息。
15、一种协同传输数据的基站设备，其包括：服务模块 A和协同模块 A, 或者服务模块 B和协同模块 B, 或服务模块 C和协同模块 C, 其中： 所述服务模块 A设置为： 当所述基站设备作为服务基站时， 根据用户设 备反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户 设备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站 以及至少一个协同基站；向业务网关上传协同用户设备请求业务的控制信令； 将接收到的所述业务网关下发的所述协同用户设备的下行业务数据发送给协 同组中的协同基站， 与所述协同组中的协同基站在相同的时频资源上将所述 协同用户设备的下行业务数据下发给所述协同用户设备； 所述协同模块 A设置为： 当所述基站设备作为协同基站时， 接收服务基 站发送的协同用户设备的下行业务数据， 与所述协同组中的服务基站在相同 的时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户设 备；
所述服务模块 B设置为： 当所述基站设备作为服务基站时， 根据用户设 备反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户 设备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站 以及至少一个协同基站； 向业务网关上传协同用户设备请求业务的控制信令 以及用于指示协同组成员信息的控制信令；
所述协同模块 B设置为： 当所述基站设备作为协同基站时， 接收业务网 关发送的协同用户设备的下行业务数据， 与所述协同组中的其他协同基站在 相同的时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户 设备；
所述服务模块 C设置为： 当所述基站设备作为服务基站时， 根据用户设 备反馈的信道质量信息， 判断所述用户设备是否为需要协同传输的协同用户 设备， 若是， 则组建所述协同用户设备的协同组， 所述协同组包括服务基站 以及至少一个协同基站； 向业务网关上传协同用户设备请求业务的控制信令 以及用于指示协同组成员信息的控制信令， 接收所述业务网关下发的所述协 同用户设备的下行业务数据， 与所述协同组中的协同基站在相同的时频资源 上将所述协同用户设备的下行业务数据下发给所述协同用户设备； 所述协同模块 C设置为： 当所述基站设备作为协同基站时， 接收业务网 关发送的协同用户设备的下行业务数据， 与所述协同组中的其他成员在相同 的时频资源上将所述协同用户设备的下行业务数据下发给所述协同用户设 备。
16、 根据权利要求 15所述的基站设备， 其中， 所述服务模块 A包括： 判断单元， 其设置为： 将用户设备反馈的信道质量信息与预设的协同门 限比较， 以判断所述用户设备是否为需要协同传输的协同用户设备， 当反馈 的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要进行协 同传输， 所述用户设备为协同用户设备；
选择单元， 其设置为： 选择候选协同基站， 向所述候选协同基站发送协 同请求， 根据接收到的候选协同基站发送的协同确认信息， 确定所述协同用 户设备的协同组成员； 控制单元， 其设置为： 与协同组中的协同基站进行联合资源调度， 以确 定分配给所述协同用户设备的下行资源以及调制编码方式， 并将资源调度结 果通知所述协同组中的协同基站； 以及 业务数据收发单元， 其设置为： 将所述业务网关下发的下行业务数据通 过 X2接口发送给协同组中的协同基站， 并与所述协同基站在相同的时频资 源上将所述下行业务数据下发给所述协同用户设备； 所述服务模块 B包括： 判断单元， 其设置为： 将用户设备反馈的信道质量信息与预设的协同门 限比较， 以判断所述用户设备是否为需要协同传输的协同用户设备， 当反馈 的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要进行协 同传输， 所述用户设备为协同用户设备；
选择单元， 其设置为： 选择候选协同基站， 向所述候选协同基站发送协 同请求， 根据接收到的候选协同基站发送的协同确认信息， 确定所述协同用 户设备的协同组成员； 控制单元， 其设置为： 与协同组中的协同基站进行联合资源调度， 以确 定分配给所述协同用户设备的下行资源以及调制编码方式， 并将资源调度结 果通知所述协同组中的协同基站； 以及 业务数据收发单元， 其设置为： 将所述协同用户设备的协同组成员信息 通过 S1接口上传给所述业务网关； 所述服务模块 C包括： 判断单元， 其设置为： 将用户设备反馈的信道质量信息与预设的协同门 限比较， 以判断所述用户设备是否为需要协同传输的协同用户设备， 当反馈 的信道质量信息低于或等于所述协同门限时， 判定所述用户设备需要进行协 同传输， 所述用户设备为协同用户设备；
选择单元， 其设置为： 选择候选协同基站， 向所述候选协同基站发送协 同请求， 根据接收到的候选协同基站发送的协同确认信息， 确定所述协同用 户设备的协同组成员； 控制单元， 其设置为： 与协同组中的协同基站进行联合资源调度， 以确 定分配给所述协同用户设备的下行资源以及调制编码方式， 并将资源调度结 果通知所述协同组中的协同基站； 以及 业务数据收发单元， 其设置为： 将所述协同用户设备的协同组成员信息 通过 S1 接口上传给所述业务网关， 接收所述业务网关下发的所述协同用户 设备的下行业务数据， 与所述协同组中的协同基站在相同的时频资源上将所 述下行业务数据下发给所述协同用户设备。
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