WO2011038661A1 - 协同调度的方法及设备 - Google Patents

协同调度的方法及设备 Download PDF

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Publication number
WO2011038661A1
WO2011038661A1 PCT/CN2010/077290 CN2010077290W WO2011038661A1 WO 2011038661 A1 WO2011038661 A1 WO 2011038661A1 CN 2010077290 W CN2010077290 W CN 2010077290W WO 2011038661 A1 WO2011038661 A1 WO 2011038661A1
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WIPO (PCT)
Prior art keywords
base station
cell
scheduling
subband
user terminal
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PCT/CN2010/077290
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English (en)
French (fr)
Inventor
高秋彬
缪德山
何浩
孙韶辉
彭莹
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大唐移动通信设备有限公司
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Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to EP10819890.4A priority Critical patent/EP2485520B1/en
Priority to US13/386,425 priority patent/US9800299B2/en
Publication of WO2011038661A1 publication Critical patent/WO2011038661A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/026—Co-operative diversity, e.g. using fixed or mobile stations as relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and device for cooperative scheduling. Background technique
  • the ITU International Telecommunication Union
  • IMT-Advanced Advanced International Mobile Telecommunications System
  • IGbps and 500M bps need to be achieved respectively; and there is a very high demand for the average spectral efficiency of the system, especially the edge spectrum efficiency.
  • 3GPP 3rd Generation Partnership Project
  • LTE-Advanced Long Term Evolution Advanced, the evolution system of the third generation mobile communication system
  • the upgraded version proposes the use of multipoint coordinated transmission technology to improve system performance.
  • Multipoint coordinated transmission technology is the collaboration between multiple transmission points separated geographically. In general, multiple transmission points are base stations of different cells. Multi-point coordinated transmission technology is divided into downlink coordinated transmission and uplink joint reception. The downlink multi-point coordinated transmission technology scheme is mainly divided into two categories: joint transmission and cooperative scheduling/beamforming.
  • FIG. 1 shows a schematic diagram of joint transmission of two cell cooperation modes.
  • two cells simultaneously transmit valid data to the terminal, and the signals transmitted by the two cells are combined by the UE after being combined in the air, effectively reducing inter-cell interference, improving the quality of the transmission signal, thereby increasing the average spectral efficiency and cell edge transmission. rate.
  • FIG. 1 shows a schematic diagram of two cooperating cells avoiding the transmit signal beam direction of the serving terminal through beam coordinated scheduling.
  • the coordinated cells need to transmit the scheduling information on the subbands in each subframe to the neighboring cells through the ⁇ 2 interface, and the overhead of the ⁇ 2 interface is large, and the delay and capacity of the ⁇ 2 interface are both There are higher requirements that affect the application of the CBF scheme in practical systems. Summary of the invention
  • the embodiments of the present invention provide a method and a device for cooperative scheduling, so as to implement less application of scheduling information through the ⁇ 2 interface, and promote the application of the CBF scheme in an actual system.
  • the embodiment of the invention provides a method for collaborative scheduling, including:
  • the base station establishes a correspondence between the subband and the spatial information, and interacts with the base station of the coordinated cell to correspond to the subband and the spatial information;
  • the base station performs scheduling in coordination with the base station of the coordinated cell according to the correspondence between the subband and the spatial information.
  • An embodiment of the present invention provides a device for cooperative scheduling, including: a relationship establishing unit, configured to establish a correspondence between a subband and spatial information, and interact with a base station of the coordinated cell to perform a correspondence between the subband and the spatial information;
  • a scheduling unit configured to coordinate with the base station of the coordinated cell according to the correspondence between the subband and the spatial information established by the relationship establishing unit.
  • the embodiment of the invention has at least the following advantages:
  • the base station establishes a correspondence between the subband and the spatial information, and interacts with the base station of the coordinated cell to perform the corresponding relationship between the subband and the spatial information, and performs cooperative scheduling according to the correspondence between the subband and the spatial information and the base station of the coordinated cell, thereby implementing the X2 interface.
  • FIG. 1 is a schematic diagram of joint transmission of two cell cooperation modes in the prior art
  • FIG. 2 is a schematic diagram of two coordinated cells in the prior art, which avoids the beam direction of a transmission signal of a service terminal by using beam coordinated scheduling;
  • FIG. 3 is a schematic flowchart of a method for cooperative scheduling according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic flowchart of a method for cooperative scheduling according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic diagram of a method for cooperative scheduling according to Embodiment 3 of the present invention
  • FIG. 5 is a schematic flowchart of a method for cooperative scheduling according to Embodiment 4 of the present invention
  • FIG. 6 is a schematic flowchart of a method for cooperative scheduling according to Embodiment 5 of the present invention
  • FIG. 8 is a schematic structural diagram of a device for cooperative scheduling provided by Embodiment 7 of the present invention. detailed description
  • the base station acquires a PMI (Precoding Matrix Indicator), a WPI (Worst Precoding Matrix Indicator), or a direction information of a UE in a cell, according to a PMI,
  • the WPI or the direction information groups the UEs in the cell, and the same group of UEs have the same PMI, WPI, or direction information
  • the base station allocates subband resources for each group of UEs, and each subband corresponds to the same PMI, WPI, or direction information.
  • Embodiment 1 of the present invention provides a method for cooperative scheduling, as shown in FIG. 3a, including the following steps:
  • Step 301 The base station establishes a correspondence between the subband and the spatial information, and interacts with the base station of the coordinated cell to perform a correspondence between the subband and the spatial information.
  • Step 302 The base station performs scheduling according to the corresponding relationship between the subband and the spatial information and the base station of the coordinated cell.
  • Embodiment 2 of the present invention provides a method for cooperative scheduling, which is combined with FIG. 3b, and includes the following steps:
  • Step 303 The base station establishes a correspondence between the subband and the spatial information, and interacts with the base station of the coordinated cell to perform a correspondence between the subband and the spatial information.
  • the base station establishes a correspondence between the sub-band and the spatial information, the base station groups the user terminals in the local cell, and each group of user terminals corresponds to the same spatial information; the base station establishes a correspondence between the sub-band and the user terminal group, Thereby determining the correspondence between the sub-band and the spatial information.
  • each group of user terminals corresponds to the same PMI, WPL BPI (Best Precoding Matrix Indicator) or direction information.
  • WPL BPI Best Precoding Matrix Indicator
  • the method further includes: the base station receiving, by the user equipment in the local cell, the PMI that is selected according to the channel selected by the user to the user terminal, and the user terminal in the local cell according to the And reporting the WPI of the channel selection of the base station to the user terminal of the coordinated cell;
  • the base station receives the channel sounding reference signal sent by the user terminal, and acquires channel information and direction information of the user terminal.
  • Step 304 The base station performs scheduling according to the corresponding relationship between the subband and the spatial information and the base station of the coordinated cell.
  • the scheduling performed by the base station according to the correspondence between the subband and the spatial information and the base station of the coordinated cell includes:
  • the cooperating cell avoids the use of a precoding matrix or beamforming direction that would cause strong interference to the cooperating cell, and/or avoids scheduling UEs that are strongly interfered by the cooperating cell.
  • the base station cooperates with the base station of the coordinated cell according to the corresponding relationship between the subband and the spatial information, and includes:
  • the base station When the coordinated cell WPI reported by the user terminal in the cell is the same as or similar to the PMI sent by the base station of the coordinated cell, the base station avoids scheduling the UE on the subband; or when the user terminal in the cell reports When the PMI is the same as the WPI sent by the base station of the coordinated cell, the base station avoids using the precoding matrix corresponding to the PMI, that is, the user terminals should be avoided from being scheduled.
  • the scheduling of the base station according to the correspondence between the subband and the spatial information and the base station of the coordinated cell further includes:
  • the base station acquires direction information that generates strong interference to the local cell and/or direction information that is strongly interfered by the coordinated cell according to the direction information of the user terminal in the current cell and the direction information sent by the base station of the coordinated cell;
  • a third embodiment of the present invention provides a method for cooperative scheduling.
  • a base station interacts with a base station of a coordinated cell to a PMI to be used by the local cell, and the base station learns that the WPI of a certain sub-band reported by the UE in the local cell is in a corresponding subframe.
  • the base station avoids scheduling the UE on the sub-band, thereby reducing the possibility of strong interference from the coordinated cell, implementing coordinated scheduling of the coordinated cells with less information interaction, and improving the cell edge UE. Spectral efficiency.
  • the method for cooperative scheduling provided by Embodiment 3 of the present invention includes the following steps:
  • the UE may have one or more different coordinated cells.
  • the UE selects a precoding matrix according to the channel of the different coordinated cell to the UE, and the selected precoding matrix may be the same or different.
  • the UE precoding the matrix to the serving cell
  • the identifier information of the coordinated cell corresponding to the precoding matrix is carried in the uplink information.
  • the UE selects a precoding matrix according to the channel of the serving cell base station to the UE, and reports the index value of the selected precoding matrix in a codebook set, that is, the PMI, to the serving cell.
  • the PMI is the PMI to be used when scheduling the UE for the month.
  • a possible PMI selection method is:
  • ⁇ is the number of elements in the codebook set
  • ⁇ ", V N ⁇ is a predefined codebook, which is a channel matrix of the serving cell base station to the UE.
  • the UE selects a precoding matrix according to a channel from the base station to the UE in the coordinated cell, and selects a precoding matrix that generates maximum interference to the UE, and also selects an index of the selected precoding matrix in the codebook from a codebook set. Recorded as WPI and reported to the service community.
  • WPI The meaning of WPI is that if the UE is scheduled on a certain sub-band, the coordinated cell base station is in interference, that is, the cooperative cell base station should try to avoid using the precoding matrix corresponding to the WPI.
  • the selection formula for WPI is:
  • WPI argmax ke[ , . N1 II H 2 V k ll 2 (2) where is the channel matrix of other base stations to the UE in the coordinated cell.
  • the reporting of PMI and WPI can be either broadband reporting or sub-band reporting.
  • the codebooks used by PMI and WPI can be the same or different.
  • Step 402 The base station groups the UE according to the precoding matrix reported by the UE, and allocates a corresponding subband to each UE group, and establishes a correspondence between the PMI, the UE group, and the subband allocated for the UE group.
  • the base station obtains the PMI reported by the UE, and groups the UEs with the same PMI or PMI corresponding to the precoding matrix distance less than the preset value, and the distance metric may be an Euclidean distance.
  • the UE participating in the packet may be all UEs in the cell, or may be part of UEs, such as cell edge UEs.
  • the base station allocates subband resources for each group of UEs, and establishes a correspondence between the subband resources, the UE group, and the PMI.
  • the manner in which the base station allocates the sub-band resources to the UE group can be flexibly set according to actual needs, for example, the sub-band is allocated to the rate and the highest UE group.
  • the packet status of the UE on each sub-band may be different.
  • the base station may periodically update the UE packet according to the PMI reported by the UE, or update the PMI after receiving the PMI, or set a trigger event to trigger the update according to actual needs.
  • the interval of the UE packet update is greater than the delay of the X2 interface transmission.
  • Step 403 The base station sends the corresponding relationship between the sub-band and the PMI to the base station of the coordinated cell through the interface, and receives the correspondence between the sub-band and the PMI sent by the base station of the coordinated cell, where the interface may be an X2 interface or other setting according to actual needs. Interface.
  • Step 404 The base station schedules the UEs in the UE group corresponding to the sub-bands on each sub-band, and when the precoding matrix corresponding to the PMI reported by the UE is the same as or similar to the precoding matrix corresponding to the WPI sent by the base station of the coordinated cell, Avoid scheduling UEs on this subband.
  • the base station when the base station performs scheduling, scheduling the UE corresponding to the sub-band on each sub-band UE within the group.
  • the base station receives PMI information on the subband transmitted by the base station from the coordinated cell.
  • the sub-band WPI reported by the UE received by the base station is the same as or similar to the PMI of the sub-band sent by the base station of the coordinated cell, it indicates that if the base station schedules the UE on the sub-band, it is vulnerable to strong interference from the coordinated cell. Therefore, the base station tries to avoid scheduling the reported WPI to be the same or close to the PMI transmitted by the base station of the coordinated cell.
  • a fourth embodiment of the present invention provides a method for cooperative scheduling.
  • a base station and a base station of a coordinated cell exchange a precoding matrix used by a cell in a cell in a WPI format, and the base station learns a certain subband reported by the UE in the cell.
  • the base station should avoid scheduling the UE on the subband, implement cooperative scheduling of the coordinated cell with less information interaction, and improve the spectrum efficiency of the cell edge UE.
  • the method for cooperative scheduling provided by Embodiment 4 of the present invention includes the following steps:
  • Step 501 The UE selects a precoding matrix according to a channel of the serving cell and the coordinated cell to the UE, and reports the precoding matrix to the serving cell. Refer to step 401 for details.
  • Step 502 The base station groups the UE according to the precoding matrix reported by the UE, and allocates a corresponding subband to each UE group, and establishes a correspondence between the PMI, the UE group, and the subband allocated for the UE group.
  • Step 503 The base station sends the corresponding relationship between the sub-band and the PMI to the base station of the coordinated cell through the interface, and receives the corresponding relationship between the sub-band and the PMI sent by the base station of the coordinated cell, where the interface may be an X2 interface or other setting according to actual needs. Interface.
  • steps 501-503 are the same as or similar to steps 401-403, and therefore, steps 401-403 can be referred to.
  • Step 504 The base station schedules UEs in the UE group corresponding to the subband on each subband. And when the precoding matrix corresponding to the PMI reported by the UE is the same as or similar to the precoding matrix corresponding to the WPI sent by the base station of the coordinated cell, the UE is scheduled to be scheduled on the subband.
  • the base station when the base station performs scheduling, the UEs in the UE group corresponding to the sub-band are scheduled on each sub-band.
  • the base station receives WPI information on the subband transmitted by the base station from the coordinated cell.
  • the base station should try to avoid scheduling the UEs with the same or close precoding matrix corresponding to the WPI corresponding to the WPI transmitted by the base station of the coordinated cell.
  • the WPI on a certain subband is WPI1
  • the precoding matrix corresponding to the PMI reported by some UEs in the local cell is equal to or close to the precoding matrix corresponding to WPI1, for example, the PMI corresponding to the UE reports. If the difference between the precoding matrix and the precoding matrix corresponding to WPI1 is within a preset value range, then the UEs should avoid scheduling to the subband or dispatch to the subband with low priority.
  • the base station may further interact with a base station of the coordinated cell (BPI), which is a best precoding matrix indicator, and the base station of the coordinated cell uses the precoding matrix corresponding to the BPI to the UE in the local cell. Produces minimal interference. In this way, the base station needs to use the precoding matrix corresponding to the BPI of the corresponding subband in the base station of the coordinated cell as much as possible when performing scheduling.
  • a fifth embodiment of the present invention provides a method for cooperative scheduling.
  • the base station estimates, by using a SRS (Sounding Reference Signal) sent by the UE, a channel that the base station reaches the UE, and direction information of the UE, and further, according to the direction information of the UE.
  • the UE performs classification and scheduling processing. Specifically, as shown in FIG. 6, the method includes the following steps: Step 601: The base station receives the SRS signal sent by the UE, and acquires channel information of the UE.
  • the UE sends an SRS signal according to the resource indicated by the serving cell, and the serving cell of the UE receives the SRS signal and estimates the channel, and further obtains the direction information of the UE.
  • Step 602 The base station groups the UE according to the channel information of the UE, and divides the UEs in the same or similar direction into a group, and establishes a correspondence between each group of UEs and the sub-bands, thereby establishing a correspondence between the sub-band and the direction information.
  • the base station divides the UE into several groups according to channel information of the UE in the cell.
  • the UE directions in each group are the same or close to each other. For example, the difference between the direction in which the UEs in each group arrives at the base station and the normal direction of the base station is smaller than the standard value set according to actual needs.
  • the base station allocates sub-band resources for each group of UEs, so that each sub-band corresponds to one direction and corresponds to one UE group.
  • the manner in which the base station allocates the sub-band resources to the UE group can be flexibly set according to actual needs, for example, the sub-band is allocated to the rate and the highest UE group.
  • the base station sets a trigger event to trigger the update of the UE group according to actual needs.
  • the time interval for updating the UE group is greater than the delay of the X2 interface, and the update of the UE group may also be periodic update.
  • Step 604 The base station schedules the UEs in the UE group corresponding to the sub-bands on each sub-band, and acquires the direction information of the sub-bands sent by the base station in the coordinated cell and the direction information of the UE in the current cell, and acquires the coordinated cell.
  • the direction of strong interference and the direction that will be strongly interfered by the coordinated cell avoid scheduling UEs corresponding to the direction.
  • the base station groups the user terminals in the local cell, establishes a correspondence between each group of user terminals and sub-bands, and a corresponding relationship between the sub-bands and PMI, WPI, or direction information, and passes each
  • the user terminal corresponding to the sub-band scheduling acquires a scheduling sub-band that generates strong interference to other cells and a scheduling sub-band that is strongly interfered by other cells, and performs corresponding processing, thereby implementing less scheduling information and promoting CBF through the X2 interface.
  • Embodiment 6 of the present invention provides a method for cooperative scheduling. As shown in FIG. 7, the method includes the following steps:
  • Step 701 The base station receives the SRS signal sent by the UE, and acquires channel information of the UE.
  • the UE sends an SRS signal according to the resource indicated by the serving cell, and the serving cell of the UE receives the SRS signal and estimates the channel.
  • Step 702 The base station calculates a precoding matrix according to the channel information of the UE, and groups the UEs with the same or similar precoding matrix into one group, and establishes a correspondence between each group of UEs and subbands. Relationship, thereby establishing a correspondence between the subband and the precoding matrix.
  • Step 703 The UE selects a precoding matrix according to a channel of the coordinated cell to the UE, and reports the signal to the base station.
  • the precoding matrix is a precoding matrix that generates the greatest interference to the UE, and the index in the codebook is denoted as WPI.
  • Step 704 The base station sends the corresponding relationship between the subband and the precoding matrix to the base station of the coordinated cell through the interface, and receives the correspondence between the subband and the precoding matrix sent by the base station of the coordinated cell, where the interface may be an X2 interface or other
  • the interface is set according to actual needs.
  • the precoding matrix here can also be represented by PMI, that is, the index value of the precoding matrix in a codebook.
  • Step 705 The base station schedules the UEs in the UE group corresponding to the sub-bands on each sub-band, and when the precoding matrix corresponding to the WPI of the coordinated cell reported by the UE is the same as or similar to the precoding matrix sent by the base station of the coordinated cell, Avoid scheduling UEs on this subband.
  • step 705 is the same as or similar to step 504. Therefore, reference may be made to the specific description of step 504.
  • the seventh embodiment of the present invention provides a device for cooperative scheduling. As shown in FIG. 8, the method includes: a relationship establishing unit 10, configured to establish a correspondence between a subband and spatial information, and interact with a base station and a space of a base station of the coordinated cell. Correspondence of information;
  • the scheduling unit 20 is configured to coordinate with the base station of the coordinated cell according to the correspondence between the subband and the spatial information established by the relationship establishing unit 10.
  • the relationship establishing unit 10 includes:
  • the grouping subunit 11 is configured to group user terminals in the cell, and each group of user terminals corresponds to the same spatial information
  • the sub-unit 12 is configured to establish a correspondence between the sub-band and the user terminal group, thereby establishing a correspondence between the sub-band and the spatial information.
  • the spatial information corresponding to each group of user terminals is:
  • Each group of user terminals corresponds to the same precoding matrix indicator PMI, the worst precoding matrix indicator WPI of the same coordinated cell, and the best precoding matrix indication of the same coordinated cell BPI or direction information.
  • the method further includes:
  • the receiving unit 30 is configured to receive a PMI that is selected and reported by a user terminal in the local cell according to a channel selected by the cell to the user terminal, and a user terminal in the cell according to a channel selected by the base station to the user terminal of the coordinated cell. And reported WPI or BPI.
  • the receiving unit 30 is further configured to:
  • the scheduling unit 20 includes:
  • a subband obtaining subunit 21 configured to acquire, according to a correspondence between the subband and the spatial information, a scheduling subband that generates strong interference to the coordinated cell, and/or a scheduling subband that is strongly interfered by the coordinated cell;
  • the scheduling sub-unit 22 is configured to avoid scheduling sub-bands that generate strong interference to the coordinated cell, and/or scheduling sub-bands that are strongly interfered by the coordinated cell.
  • the scheduling unit 20 is specifically configured to:
  • the UE When the PMI reported by the user terminal in the cell is the same as the WPI sent by the base station of the coordinated cell, the UE is prevented from being scheduled on the sub-band.
  • the scheduling unit 20 is further specifically configured to:
  • the base station groups the user terminals in the local cell, establishes a correspondence between each group of user terminals and sub-bands, and a corresponding relationship between the sub-bands and PMI, WPI, or direction information, and passes each The sub-band schedules the corresponding user terminal to acquire a scheduling sub-band that generates strong interference to other cells and is strongly forced by other cells.
  • the scheduling subband of the disturbance is processed and processed accordingly, so that less scheduling information is transmitted through the X2 interface, and the application of the CBF scheme in the actual system is promoted.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

Description

协同调度的方法及设备 本申请要求于 2009 年 9 月 29 日提交中国专利局， 申请号为 200910235535.6, 发明名称为 "协同调度的方法及设备" 的中国专利 申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域， 特别涉及协同调度的方法及设备。 背景技术
ITU ( International Telecommunication Union , 国际电信联盟) 为 下一代移动通信系统 IMT- Advanced (高级国际移动通信系统） 的性 能提出了非常苛刻的要求， 比如最大系统传输带宽达到 100MHz, 上 下行数据传输的峰值速率分别需要达到 IGbps和 500M bps; 同时还 对系统平均频谱效率尤其是边缘频谱效率提出了非常高的需求。为了 满足 IMT- Advanced新系统的要求， 3GPP ( 3rd Generation Partnership Project , 第三代合作伙伴计划 ） 在其下一代移动蜂窝通信系统 LTE- Advanced ( Long Term Evolution Advanced, 第三代移动通信系统 的演进系统的升级版）中提出采用多点协同传输技术来提高系统的性 能。
多点协同传输技术是地理位置上分离的多个传输点之间的协作。 一般来说， 多个传输点是不同小区的基站。 多点协同传输技术分下行 的协同传输和上行的联合接收。下行多点协同传输技术方案主要分为 两类： 联合传输和协同调度 /波束赋形。
其中， 联合传输方案中， 协作小区集合内的全部小区在相同的无 线资源块中发送相同或者不同的数据到终端，即多个协作小区在同一 时刻发送数据到同一终端。 通过联合传输方式， 将原来 LTE ( Long Term Evolution, 第三代移动通信系统的演进系统） 系统中不同小区 间的干扰信号变成有用信号， 从而减少小区间干 4尤， 提升系统性能。 图 1给出了两个小区协作方式进行联合传输的示意图。 在图中， 两个 小区同时发送有效数据到终端，两个小区发送的信号在空中合并后被 UE接收， 有效减少小区间的干扰， 提升了传输信号质量， 从而增加 平均频谱效率和小区边缘传输速率。
协同调度 /波束赋形 （CS/CBF ) 方案中， 只有 UE的服务小区向 UE发送数据， 在这点上与现有的 LTE标准和传输方式相同。 协作小 区集合内的其他小区可以利用相同的无线资源块为不同 UE ( User Equipment , 用户设备 )服务。 但是， 在 LTE标准中各小区发送的信 号并不考虑对其他小区发送信号的干扰，小区间信号的发送方向和资 源没有进行协调。 而 CBF的协作小区集合内各小区发送信号需要根 据对其它小区信号的干扰进行协调， 尽可能地减少对其它小区 UE的 干扰。 协作小区间通过协调发送信号波束的方向， 有效地将干扰比较 大的波束避开， 从而减少相互间的干扰， 提升接收信号的质量。 图 2 给出了两个协作小区通过波束协调调度，将服务终端的发送信号波束 方向避开的示意图。
但是， 现有的 CBF方案中各协作小区需要将每个子帧内的子带 上的调度信息通过 Χ2接口传递给相邻小区， Χ2接口的开销 4艮大， 对 Χ2接口的时延和容量都有较高的要求，影响了 CBF方案在实际系 统中的应用。 发明内容
本发明实施例提供了一种协同调度的方法和设备， 以实现通过 Χ2接口传递较少的调度信息， 促进 CBF方案在实际系统中的应用。
本发明实施例提供了一种协同调度的方法， 包括：
基站建立子带与空间信息的对应关系，并与协作小区的基站交互 子带与空间信息的对应关系；
所述基站根据子带与空间信息的对应关系与所述协作小区的基 站协同进行调度。 本发明实施例提供一种协同调度的设备， 包括： 关系建立单元， 用于建立子带与空间信息的对应关系， 并与协作 小区的基站交互子带与空间信息的对应关系；
调度单元，用于根据关系建立单元建立的子带与空间信息的对应 关系与所述协作小区的基站协同进行调度。
与现有技术相比， 本发明实施例至少具有以下优点：
基站建立子带与空间信息的对应关系，并与协作小区的基站交互 子带与空间信息的对应关系，根据子带与空间信息的对应关系与协作 小区的基站进行协同调度， 从而实现通过 X2接口传递较少的调度信 息实现协同调度， 促进 CBF方案在实际系统中的应用。 附图说明
图 1是现有技术中两个小区协作方式进行联合传输的示意图； 图 2是现有技术中两个协作小区通过波束协调调度，将服务终端 的发送信号波束方向避开的示意图；
图 3a是本发明实施例一提供的协同调度的方法的流程示意图； 图 3b是本发明实施例二提供的协同调度的方法的流程示意图； 图 4是本发明实施例三提供的协同调度的方法的流程示意图； 图 5是本发明实施例四提供的协同调度的方法的流程示意图； 图 6是本发明实施例五提供的协同调度的方法的流程示意图； 图 7是本发明实施例六提供的协同调度的方法的流程示意图； 图 8是本发明实施例七提供的协同调度的设备的结构示意图。 具体实施方式
下面将结合本发明中的附图，对本发明的实施例中的技术方案进 行清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实 施例， 而不是全部的实施例。 基于本发明中的实施例， 本领域普通技 术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属 于本发明保护的范围。
本发明实施例的核心思想在于： 基站获取小区内 UE的 PMI ( Precoding Matrix Indicator, 预编码矩阵标识符）、 WPI ( Worst Precoding Matrix Indicator, 最差预编码矩阵标识符） 或者方向信息， 根据 PMI、 WPI或者方向信息将小区内的 UE进行分组， 同一组 UE 具有相同的 PMI、 WPI或者方向信息；基站为每组 UE分配子带资源， 每一子带对应同一 PMI、 WPI或者方向信息。 同时， 基站通过与协作 小区的基站交互各子带上的 PMI、 WPI或者方向信息， 获知会对协作 小区产生强干扰的方向以及 /或者会受到协作小区强干扰的方向， 从 而在调度时进行避免或者干扰抑制。 本发明的实施例一提供一种协同调度的方法， 如图 3a所示， 包 括以下步骤：
步骤 301 , 基站建立子带与空间信息的对应关系， 并与协作小区 的基站交互子带与空间信息的对应关系。
步骤 302, 所述基站根据子带与空间信息的对应关系与所述协作 小区的基站协同进行调度。 本发明的实施例二提供一种协同调度的方法， 结合图 3b所示， 包括以下步骤：
步骤 303， 基站建立子带与空间信息的对应关系， 并与协作小区 的基站交互子带与空间信息的对应关系。
所述基站建立子带与空间信息的对应关系包括：所述基站对本小 区内的用户终端进行分組， 每组用户终端对应相同的空间信息； 所述 基站建立子带与用户终端组的对应关系，从而确定子带与空间信息的 对应关系。
所述每组用户终端对应相同的空间信息为：每组用户终端对应相 同的 PMI、 WPL BPI ( Best Precoding Matrix Indicator, 最好预编码 矩阵指示符）或者方向信息。 所述基站对本小区内的用户终端进行分组之前， 还包括： 所述基站接收本小区内的用户终端根据本小区到用户终端的信 道选择的并上报的 PMI,以及本小区内的用户终端根据所述协作小区 的基站到用户终端的信道选择的并上报的 WPI;
所述基站接收用户终端发送的信道探测参考信号，获取用户终端 的信道信息以及方向信息。
步骤 304, 所述基站根据子带与空间信息的对应关系与所述协作 小区的基站协同进行调度。
所述基站根据子带与空间信息的对应关系与所述协作小区的基 站协同进行调度包括：
所述基站根据协作小区的子带与空间信息的对应关系获取在一 个子带上会对协作小区产生强干扰的预编码矩阵或者波束赋形方向 和 /或受到协作小区强干扰的 UE;
所述协作小区避免使用会对协作小区产生强干扰的预编码矩阵 或者波束赋形方向， 和 /或避免调度受到协作小区强干扰的 UE。
具体的，所述基站才艮据子带与空间信息的对应关系与所述协作小 区的基站协同进行调度包括：
当本小区内的用户终端上报的协作小区 WPI与所述协作小区的 基站发送的 PMI相同或相近时，所述基站避免在该子带上调度该 UE; 或者当本小区内的用户终端上报的 PMI与所述协作小区的基站发送 的 WPI相同时， 所述基站避免使用该 PMI对应的预编码矩阵， 也就 是说应避免调度这些用户终端。
所述基站根据子带与空间信息的对应关系与所述协作小区的基 站协同进行调度还包括：
所述基站根据本小区内的用户终端的方向信息以及所述协作小 区的基站发送的方向信息， 获取对本小区产生强干扰的方向信息、 和 /或受到协作小区产生强干扰的方向信息；
所述基站避免在获取的方向信息上进行调度。 本发明的实施例三提供一种协同调度的方法，基站与协作小区的 基站交互本小区即将使用的 PMI, 当基站获知本小区 UE上报的某一 子带的 WPI与某一协作小区在相应子带上将使用的 PMI相同或者相 近时， 基站避免在该子带上调度该 UE, 从而降低受到协作小区强干 扰的可能性， 以较少的信息交互实现协作小区的协同调度， 提高小区 边缘 UE的频谱效率。
具体的， 本发明实施例三提供的协同调度的方法， 如图 4所示， 包括以下步骤：
步骤 401 , UE根据服务小区和协作小区到 UE的信道选择预编码 矩阵， 并上报到服务小区。
具体的， UE可以有一个或者多个不同的协作小区。 当 UE有多 个不同的协作小区时， UE根据不同协作小区到 UE的信道选择预编 码矩阵， 选中的预编码矩阵可以相同或者不同， 此时， UE在向服务 小区上 预编码矩阵时，可以在上艮信息中携带该预编码矩阵对应的 协作小区的标识信息。
UE根据服务小区基站到 UE的信道选择预编码矩阵， 将选择的 预编码矩阵在一个码本集合中的索引值， 即 PMI上报到服务小区。 该 PMI为该月良务小区对 UE调度时将要使用的 PMI。
一种可能的 PMI的选取方法为：
PMI = argmaxke(1 2 N) II II2 ( 1)
其中， Ν是码本集合中元素的个数， { "，V N}是预先定义好的码 本， 是服务小区基站到 UE的信道矩阵。
UE根据协作小区内的基站到 UE的信道选择预编码矩阵， 选取 的是对 UE产生最大干扰的预编码矩阵， 同样是从一个码本集合中选 取，选中的预编码矩阵在码本中的索引记为 WPI，并上报到服务小区。
WPI的含义是， 如果该 UE在某个子带上被调度了， 协作小区基站在 干扰， 也就是说协作小区基站应尽量避免使用该 WPI对应的预编码 矩阵。 WPI的选取公式为：
WPI = argmaxke[ , .N1 II H2Vk ll2 (2) 其中 是协作小区内其他基站到 UE的信道矩阵。
PMI和 WPI的上报可以是宽带上报， 也可以是子带上报。 PMI 和 WPI使用的码本可以相同， 也可以不同。
步骤 402, 基站根据 UE上报的预编码矩阵对 UE进行分组， 并 为每一个 UE组分配相应的子带， 建立 PMI、 UE组以及为该 UE组 分配的子带的对应关系。
具体的， 基站获取 UE上报的 PMI, 将具有相同 PMI或者 PMI 对应的预编码矩阵距离小于预设值的 UE分为一组， 距离度量可以是 欧氏距离。
参与分组的 UE可以是小区内的全部 UE, 也可以是一部分 UE, 例如小区边缘 UE。
基站为每一组 UE分配子带资源， 建立子带资源与 UE组、 以及 PMI的对应关系。
基站为 UE组分配子带资源的方式可以根据实际需要灵活设置， 例如将子带分配给速率和最高的 UE组。
如果 UE上报的是子带 PMI, 则每个子带上 UE的分组情况可以 不同。
基站可以根据 UE上报的 PMI周期性更新 UE分组，或者在接收 到 PMI后即进行更新， 或者根据实际需要设置触发事件触发更新。 本发明实施例中， UE分组更新的间隔大于 X2接口传递的时延。
步骤 403，基站将子带与 PMI的对应关系通过接口向协作小区的 基站发送， 并接收协作小区的基站发送的子带与 PMI的对应关系， 该接口具体可以为 X2接口或者其他根据实际需要设置的接口。
步骤 404， 基站在每个子带上调度该子带对应的 UE组内的 UE， 并当 UE上报的 PMI对应的预编码矩阵与协作小区的基站发送的 WPI 对应的预编码矩阵相同或者相近时， 避免在该子带上调度 UE。
具体的， 基站进行调度时， 在每个子带上调度该子带对应的 UE 组内的 UE。 此外， 基站会接收来自协作小区的基站发送的该子带上 的 PMI信息。 当基站接收的 UE上报的该子带 WPI与协作小区的基 站发送的该子带的 PMI相同或者相近时， 表示如果基站在该子带上 调度该 UE, 则很容易受到该协作小区强干扰。 因此， 基站在调度时 尽量避免调度上报的 WPI与协作小区的基站传递的 PMI相同或者接 近的 UE。 例如， 根据协作小区传递的信息， 在某个子带上， 协作小 区将会使用 PMI1进行传输， 而本小区内一些 UE上报的协作小区 WPI等于或者接近 PMI1 , 那么这些 UE就应尽量避免调度到该子带 上， 或者也可以以低优先级调度到该子带上。 本发明的实施例四提供一种协同调度的方法，基站与协作小区的 基站以 WPI的形式交互本小区不希望协作小区使用的预编码矩阵， 当基站获知本小区 UE上报的某一子带的 PMI与协作小区传递过来的 相应子带的 WPI相同或者相近时，基站应避免在该子带上调度该 UE, 以较少的信息交互实现协作小区的协同调度， 提高小区边缘 UE的频 谱效率。
具体的， 本发明实施例四提供的协同调度的方法， 如图 5所示， 包括以下步骤：
步骤 501， UE根据服务小区和协作小区到 UE的信道选择预编码 矩阵， 并上报到服务小区。 具体参考步骤 401。
步骤 502， 基站根据 UE上报的预编码矩阵对 UE进行分组， 并 为每一个 UE组分配相应的子带， 建立 PMI、 UE组以及为该 UE组 分配的子带的对应关系。
步骤 503，基站将子带与 PMI的对应关系通过接口向协作小区的 基站发送， 并接收协作小区的基站发送的子带与 PMI的对应关系 , 该接口具体可以为 X2接口或者其他根据实际需要设置的接口。
具体的， 步骤 501-503同步骤 401-403相同或相似， 因此， 可以 参考步骤 401-403。
步骤 504， 基站在每个子带上调度该子带对应的 UE组内的 UE， 并当 UE上报的 PMI对应的预编码矩阵与协作小区的基站发送的 WPI 对应的预编码矩阵相同或者相近时， 避免在该子带上调度 UE。
具体的， 基站进行调度时， 在每个子带上调度该子带对应的 UE 组内的 UE。 此外， 基站会接收来自协作小区的基站发送的该子带上 的 WPI信息。 基站在调度时要尽量避免调度上报的 PMI对应的预编 码矩阵与协作小区的基站传递的 WPI对应的预编码矩阵相同或者接 近的 UE。 例如， 根据协作小区传递过来的信息， 在某个子带上的 WPI为 WPI1 , 而本小区内一些 UE上报的 PMI对应的预编码矩阵等 于或者接近 WPI1对应的预编码矩阵，例如 UE上报的 PMI对应的预 编码矩阵与 WPI1对应的预编码矩阵的差值在预设的数值范围之内， 那么这些 UE就应尽量避免调度到该子带上， 或者以低优先级调度到 该子带上。
本发明的实施例中，基站还可以与协作小区的基站交互 BPI( Best Precoding matrix Indicator, 最好预编码矩阵指示符）， 协作小区的基 站使用该 BPI对应的预编码矩阵会对本小区内的 UE产生最小的干 扰。 这样， 基站在进行调度时要求尽可能使用协作小区的基站在相应 子带的 BPI对应的预编码矩阵。 本发明的实施例五提供一种协同调度的方法， 基站通过 UE发送 的 SRS ( Sounding Reference Signal, 信道探测参考信号）估计出基站 到达 UE的信道、 以及 UE的方向信息， 进一步根据 UE的方向信息 对 UE进行分类以及调度处理， 具体的， 如图 6所示， 包括以下步骤： 步骤 601，基站接收 UE发送的 SRS信号，获取 UE的信道信息。
UE按照服务小区指示的资源发送 SRS信号， UE的服务小区接 收 SRS信号并估计出信道， 进一步得到 UE的方向信息。
步骤 602， 基站根据 UE的信道信息对 UE进行分組， 将相同或 者相近方向的 UE划分为一组， 并建立每组 UE与子带的对应关系， 从而建立子带与方向信息的对应关系。
具体的，基站根据小区内的 UE的信道信息，把 UE分为若干組， 每组内的 UE方向相同或接近， 例如每组内的 UE到达基站的方向与 基站的法线方向之间的夹角的差值小于根据实际需要设置的标准值。
基站为每组 UE分配子带资源， 使每个子带对应一个方向， 同时 对应一个 UE组。
基站为 UE组分配子带资源的方式可以根据实际需要灵活设置， 例如将该子带分配给速率和最高的 UE组。
本发明实施例中， 基站根据实际需要设置触发事件触发更新 UE 组， 优选的， 更新 UE組的时间间隔大于 X2接口传递的时延， UE 组的更新也可以是周期性更新。
步骤 603 , 基站将子带对应的方向信息向协作小区的基站发送， 并接收协作小区的基站发送的子带的方向信息。
步骤 604, 基站在每个子带上调度该子带对应的 UE组内的 UE, 并根据协作小区内的基站发送的子带的方向信息以及本小区内 UE的 方向信息，获取会对协作小区产生强干扰的方向以及会受到协作小区 强干扰的方向， 避免调度该方向对应的 UE。
通过采用本发明实施例提供的方法，基站对本小区内的用户终端 进行分组， 建立每组用户终端与子带的对应关系、 以及子带与 PMI、 WPI或者方向信息的对应关系， 并通过每一子带调度对应的用户终 端，获取对其他小区产生强干扰的调度子带以及会受到其他小区强干 扰的调度子带并进行相应处理， 从而以实现通过 X2接口传递较少的 调度信息， 促进 CBF方案在实际系统中的应用。 本发明的实施例六提供一种协同调度的方法， 如图 7所示， 包括 以下步骤：
步骤 701，基站接收 UE发送的 SRS信号，获取 UE的信道信息。 UE按照服务小区指示的资源发送 SRS信号， UE的服务小区接 收 SRS信号并估计出信道。
步骤 702， 基站根据 UE的信道信息计算出预编码矩阵， 将预编 码矩阵相同或者相近的 UE分为一組， 并建立每组 UE与子带的对应 关系， 从而建立子带与预编码矩阵的对应关系。
步骤 703 , UE根据协作小区到 UE的信道选择预编码矩阵， 并上 报到基站。
该预编码矩阵为对 UE产生最大干扰的预编码矩阵， 在码本中的 索引记为 WPI。
步骤 704, 基站将子带与预编码矩阵的对应关系通过接口向协作 小区的基站发送，并接收协作小区的基站发送的子带与预编码矩阵的 对应关系， 该接口具体可以为 X2接口或者其他根据实际需要设置的 接口。 这里的预编码矩阵也可以用 PMI来表示， 即预编码矩阵在一 个码本中的索引值。
步骤 705 , 基站在每个子带上调度该子带对应的 UE组内的 UE, 并当 UE上报的协作小区的 WPI对应的预编码矩阵与协作小区的基站 发送的预编码矩阵相同或者相近时， 避免在该子带上调度 UE。
具体的， 步骤 705同步骤 504相同或相似， 因此， 可以参考步骤 504的具体介绍。 本发明实施例七提供了一种协同调度的设备，如图 8所示，包括： 关系建立单元 10, 用于建立子带与空间信息的对应关系， 并与 协作小区的基站交互子带与空间信息的对应关系；
调度单元 20， 用于根据关系建立单元 10建立的子带与空间信息 的对应关系与所述协作小区的基站协同进行调度。
本发明实施例中， 所述关系建立单元 10包括：
分组子单元 11， 用于对本小区内的用户终端进行分组， 每組用 户终端对应相同的空间信息；
建立子单元 12， 用于建立子带与用户终端组的对应关系， 从而 建立子带与空间信息的对应关系。
所述每组用户终端对应相同的空间信息为：
每组用户终端对应相同的预编码矩阵指示符 PMI、同一协作小区 的最差预编码矩阵指示符 WPI、同一协作小区的最好预编码矩阵指示 符 BPI或者方向信息。
本发明实施例中， 还包括：
接收单元 30, 用于接收本小区内的用户终端根据本小区基站到 用户终端的信道选择的并上报的 PMI,以及本小区内的用户终端根据 所述协作小区的基站到用户终端的信道选择的并上报的 WPI或者 BPI。
所述接收单元 30还用于：
接收用户终端发送的信道探测参考信号，获取用户终端的信道信 息以及方向信息。
所述调度单元 20包括：
子带获取子单元 21 , 用于根据子带与空间信息的对应关系获取 对协作小区产生强干扰的调度子带、 和 /或受到协作小区产生强干扰 的调度子带；
调度子单元 22, 用于避免在所述对协作小区产生强干扰的调度 子带、 和 /或受到协作小区产生强干扰的调度子带进行调度。
所述调度单元 20具体用于：
当本小区内的用户终端上报的 WPI与所述协作小区的基站发送 的 PMI相同时， 避免在该子带上调度该 UE; 或者
当本小区内的用户终端上报的 PMI与所述协作小区的基站发送 的 WPI相同时， 避免在该子带上调度该 UE。
所述调度单元 20具体还用于：
根据本小区内的用户终端的方向信息以及所述协作小区的基站 发送的方向信息， 获取对本小区产生强干扰的方向信息、 和 /或受到 协作小区产生强干扰的方向信息；
避免在获取的方向上进行调度。
通过采用本发明实施例提供的设备，基站对本小区内的用户终端 进行分组， 建立每組用户终端与子带的对应关系、 以及子带与 PMI、 WPI或者方向信息的对应关系， 并通过每一子带调度对应的用户终 端，获取对其他小区产生强干扰的调度子带以及会受到其他小区强干 扰的调度子带并进行相应处理， 从而以实现通过 X2接口传递较少的 调度信息， 促进 CBF方案在实际系统中的应用。 通过以上的实施方式的描述，本领域的技术人员可以清楚地了解 到本发明可借助软件加必需的通用硬件平台的方式来实现， 当然也可 以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解， 软件产品的形式体现出来， 该计算机软件产品存储在一个存储介质 中， 包括若干指令用以使得一台计算机设备（可以是个人计算机， 服 务器， 或者网络设备等）执行本发明各个实施例所述的方法。
本领域技术人员可以理解附图只是一个优选实施例的示意图，附 图中的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实 施例描述进行分布于实施例的装置中，也可以进行相应变化位于不同 于本实施例的一个或多个装置中。上述实施例的模块可以合并为一个 模块， 也可以进一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述， 不代表实施例的优劣。 以上公开的仅为本发明的几个具体实施例， 但是， 本发明并非局 限于此，任何本领域的技术人员能思之的变化都应落入本发明的保护 范围。

Claims

权利要求
1、 一种协同调度的方法， 其特征在于， 包括：
基站建立子带与空间信息的对应关系，并与协作小区的基站交互 子带与空间信息的对应关系；
所述基站根据子带与空间信息的对应关系与所述协作小区的基 站协同进行调度。
2、 如权利要求 1所述的方法， 其特征在于， 所述基站建立子带 与空间信息的对应关系包括：
所述基站对本小区内的用户终端进行分组，每组用户终端对应相 同的空间信息；
所述基站建立子带与用户终端组的对应关系，从而建立子带与空 间信息的对应关系。
3、 如权利要求 2所述的方法， 其特征在于， 所述每组用户终端 对应相同的空间信息为：
每组用户终端对应相同的预编码矩阵指示符 PMI、同一协作小区 的最差预编码矩阵指示符 WPI、同一协作小区的最好预编码矩阵指示 符 BPI或者方向信息。
4、 如权利要求 3所述的方法， 其特征在于， 所述基站对本小区 内的用户终端进行分组之前， 还包括：
所述基站接收本小区内的用户终端根据所述基站到所述用户终 端的信道选择并上报的 PMI，以及本小区内的用户终端根据所述协作 小区的基站到用户终端的信道选择并上报的 WPI或者 BPI。
5、 如权利要求 3所述的方法， 其特征在于， 所述基站对本小区 内的用户终端进行分组之前， 还包括：
所述基站接收用户终端发送的信道探测参考信号，获取用户终端 的信道信息以及方向信息。
6、 如权利要求 1所述的方法， 其特征在于， 所述基站根据子带 与空间信息的对应关系与所述协作小区的基站协同进行调度包括： 所述基站根据子带与空间信息的对应关系获取对协作小区产生 强干扰的调度子带、 和 /或受到协作小区强干扰的调度子带；
所述基站避免在所述对协作小区产生强干扰的调度子带、 和 /或 受到协作小区强干扰的调度子带进行调度。
7、 如权利要求 4所述的方法， 其特征在于， 所述基站根据子带 与空间信息的对应关系与所述协作小区的基站协同进行调度包括： 当本小区内的用户终端上报的 WPI与所述协作小区的基站发送 的 PMI相同时， 所述基站避免在该 WPI对应的子带上调度该用户终 端; 或者
当本小区内的用户终端上报的 PMI与所述协作小区的基站发送 的 WPI相同时， 所述基站避免在该 PMI子带上调度该用户终端。
8、 如权利要求 5所述的方法， 其特征在于， 所述基站根据子带 与空间信息的对应关系与所述协作小区的基站协同进行调度包括： 所述基站根据本小区内的用户终端的方向信息以及所述协作小 区的基站发送的方向信息， 获取对协作小区产生强干扰的方向信息、 和 /或受到协作小区强干扰的方向信息；
所述基站避免在获取的方向上进行调度。
9、 一种协同调度的设备， 其特征在于， 包括：
关系建立单元， 用于建立子带与空间信息的对应关系， 并与协作 小区的基站交互子带与空间信息的对应关系；
调度单元，用于根据关系建立单元建立的子带与空间信息的对应 关系与所述协作小区的基站协同进行调度。
10、 如权利要求 9所述的设备， 其特征在于， 所述关系建立单元 包括：
分组子单元， 用于对本小区内的用户终端进行分组， 每组用户终 端对应相同的空间信息；
建立子单元， 用于建立子带与用户终端组的对应关系， 从而建立 子带与空间信息的对应关系。
11、 如权利要求 9所述的设备， 其特征在于， 还包括： 接收单元，用于接收本小区内的用户终端根据本小区基站到用户 终端的信道选择的并上报的 PMI,以及本小区内的用户终端根据所述 协作小区的基站到用户终端的信道选择的并上报的 WPI或者 BPI。
12、 如权利要求 11所述的设备， 其特征在于， 所述接收单元还 用于：
接收用户终端发送的信道探测参考信号，获取用户终端的信道信 息以及方向信息。
13、如权利要求 9所述的设备，其特征在于，所述调度单元包括： 子带获取子单元，用于根据子带与空间信息的对应关系获取对协 作小区产生强干扰的调度子带、 和 /或受到协作小区强干扰的调度子 带；
调度子单元， 用于避免在所述对协作小区产生强干扰的调度子 带、 和 /或受到协作小区强干扰的调度子带进行调度。
14、 如权利要求 11所述的设备， 其特征在于， 所述调度单元具 体用于：
当本小区内的用户终端上报的 WPI与所述协作小区的基站发送 的 PMI相同时， 避免在该 WPI对应的子带上调度该用户终端； 或者 当本小区内的用户终端上报的 PMI与所述协作小区的基站发送 的 WPI相同时， 避免在该 PMI对应的子带上调度该用户终端。
15、 如权利要求 12所述的设备， 其特征在于， 所述调度单元具 体用于：
根据本小区内的用户终端的方向信息以及所述协作小区的基站 发送的方向信息， 获取对本小区产生强干扰的方向信息、 和 /或受到 协作小区强干扰的方向信息；
避免在获取的方向上进行调度。
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