WO2013020458A1 - 一种传输调度的方法及装置 - Google Patents

一种传输调度的方法及装置 Download PDF

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Publication number
WO2013020458A1
WO2013020458A1 PCT/CN2012/079232 CN2012079232W WO2013020458A1 WO 2013020458 A1 WO2013020458 A1 WO 2013020458A1 CN 2012079232 W CN2012079232 W CN 2012079232W WO 2013020458 A1 WO2013020458 A1 WO 2013020458A1
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Prior art keywords
local area
neighboring cell
base station
cell
uplink
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PCT/CN2012/079232
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English (en)
French (fr)
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潘学明
徐婧
沈祖康
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电信科学技术研究院
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Publication of WO2013020458A1 publication Critical patent/WO2013020458A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for transmission scheduling. Background technique
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • GB Guard Band
  • a radio frame has a length of 10 ms and contains 10 sub-frames, including a special sub-frame and a regular sub-frame. Each sub-frame is Lms.
  • the special subframe is divided into three time slots: DwPTS (Downlink Pilot Time Slot), GP and UpPTS (Uplink Pilot Time Slot).
  • the regular subframe includes an uplink subframe and a downlink subframe, and is used for transmitting uplink control signaling, downlink control signaling, and service data.
  • two special subframes located in subframes #1 and #6 or a special subframe (located in subframe #1) can be configured.
  • Subframe #0 and subframe #5 and DwPTS slots in special subframes are always used for downlink transmission, and UpPTS slots in subframe #2 and special subframes are always used for uplink transmission, and other subframes can be used as needed. Configured to be used for upstream or downstream transmission.
  • the uplink and downlink subframe allocation in TD-LTE supports 7 different modes.
  • the specific configuration parameters are shown in Table 1.
  • D indicates that it is used for downlink transmission
  • U indicates that it is used for uplink transmission
  • S indicates that the subframe is a special subframe, including DwPTS, GP and UpPTS three parts.
  • the special subframe configuration and the uplink and downlink subframe allocation mode are broadcasted to all users in the cell through SI (System Information).
  • the inventor of the present application has found that in an actual system, if different cells are configured with different uplink and downlink subframe configurations, the cross-slots of adjacent cells are disturbed, as shown in FIG.
  • the neighboring cells here may be geographically adjacent cells using the same TDD carrier (as shown in Figure 2).
  • the cell described herein may be a cell deployed in the same layer (for example, a macro cell), or may be a layered cell (for example, a cell including a macro cell, a micro cell, a home base station coverage, etc.).
  • the impact of such cross-slot interference on system performance is closely related to the deployment scenario and the wireless environment.
  • the cross-slot interference will be seriously reduced.
  • Cell performance in the receiving state If the distance between neighboring cells is far, or there is effective signal occlusion, etc., the cross-slot interference level has little effect on the performance of the cell in the receiving state.
  • Embodiments of the present invention provide a method and an apparatus for transmitting scheduling, which are used to reduce cross-interference between UEs.
  • a method of transmission scheduling includes the following steps:
  • the base station obtains uplink and downlink configuration information of the neighboring cell
  • the base station determines, according to the uplink and downlink configuration information of the local area and the uplink and downlink configuration information of the neighboring cell, whether the UE in the local area and the neighboring cell UE perform different transmission directions at the same time;
  • the base station determines whether the UE in the local area is subjected to interference
  • the base station schedules at least the uplink and downlink transmissions of the local area UE to the subframes that are transmitted in the same direction at the same time as the adjacent small cell UE.
  • a base station comprising:
  • An obtaining module configured to obtain uplink and downlink configuration information of a neighboring cell
  • the transmission judging module is configured to determine, according to the uplink and downlink configuration information of the local area and the uplink and downlink configuration information of the neighboring cell, whether the UE in the local area and the neighboring cell UE perform transmission in different directions at the same time;
  • the interference judgment module is configured to: when the UE in the local area and the neighboring cell UE perform transmission in different directions at the same time, the base station determines whether the UE in the local area is interfered by the local area;
  • a scheduling module configured to: when the UE in the local area is interfered, at least perform uplink and downlink transmission of the local area UE to a subframe that is transmitted in the same direction at the same time as the neighboring cell UE.
  • the base station determines that there is a different direction of transmission between the UE and the neighboring cell UE in the local area, and the UE in the local area is located near the cell edge of the neighboring cell, determining that the local area UE may
  • the interference is mainly caused by the fact that the UE in the local area and the neighboring cell UE transmit different directions at the same time. Therefore, the base station schedules at least the uplink and downlink transmission of the local area UE to be simultaneously with the neighboring cell UE. Perform the same direction of transmission to reduce the interference.
  • FIG. 1 is a schematic diagram of a frame structure in the prior art
  • FIG. 2 is a schematic diagram of a system structure in the prior art
  • FIG. 3 is a flowchart of a main method for transmission scheduling in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a location between cells in an embodiment of the present invention.
  • FIG. 5 is a flowchart of a transmission scheduling method in which the local area and the neighboring area are configured in the same manner according to the embodiment of the present invention
  • FIG. 6 is a flowchart of the base station transmitting the uplink and downlink transmission of the local area UE in a fixed transmission subframe according to the embodiment of the present invention
  • Upper the flow chart of the transmission scheduling method
  • FIG. 7 is a structural diagram of a base station according to an embodiment of the present invention. detailed description
  • the base station determines that there is a different direction of transmission between the UE and the neighboring cell UE in the local area, and the UE in the local area is located near the cell edge of the neighboring cell, determining that the local area UE may
  • the interference is mainly caused by the fact that the UE in the local area and the neighboring cell UE transmit different directions at the same time. Therefore, the base station schedules at least the uplink and downlink transmission of the local area UE to be simultaneously with the neighboring cell UE. Perform the same direction of transmission to reduce the interference.
  • neighboring TDD cells in the same network are time-synchronized, and the neighboring cells mentioned herein may be adjacent cells of the same frequency, or adjacent cells of adjacent frequencies;
  • the neighboring cells (for example, all are Macro cells) may also be hierarchically deployed neighboring cells (for example, a Macro cell and a femto cell, or a Macro cell and a Pico cell).
  • the main method of the transmission scheduling in this embodiment is as follows:
  • Step 301 The base station obtains uplink and downlink configuration information of the neighboring cell. Specifically, the base station can obtain uplink and downlink configuration information of the neighboring cell by using a network interface signaling interaction or the like.
  • Step 302 The base station determines, according to the uplink and downlink configuration information of the local area and the uplink and downlink configuration information of the neighboring cell, whether the UE in the local area and the neighboring cell UE perform transmission in different directions at the same time. The base station determines whether the same configuration can be used in the local area and the neighboring cell. If the configuration sequence number is different, there is a case where the transmission is performed in different directions at the same time.
  • Step 303 When the local area UE and the neighboring cell UE simultaneously transmit in different directions, the base station determines Whether the UE in the local area is located near the edge of the cell of the neighboring cell. When the UE in the local area and the neighboring cell UE simultaneously transmit in the same direction, the process ends.
  • Step 304 When the UE in the local area is located near the cell edge of the neighboring cell, the base station schedules at least the uplink and downlink transmission of the local area UE to a subframe that is transmitted in the same direction at the same time as the neighboring cell UE. When the UE in the local area is not disturbed, the UE may continue to be scheduled according to the current configuration.
  • the base station determines whether the UE is in the local area and the edge of the neighboring cell. If yes, it determines that the local area UE is located near the cell edge of the neighboring cell. Or, the base station determines, by using the measurement result reported by the local area UE, whether the local area UE is located near a cell edge of the neighboring cell. Techniques capable of determining whether the UE in the local area is located near the cell edge of the neighboring cell are applicable to the present embodiment.
  • the base station obtains the location information of the base station of the neighboring cell and the location information of the local area UE by using a positioning manner, and determines whether the UE is in the local area according to the obtained location information of the base station and the location information of the local area UE. And an edge of the neighboring cell. Or the base station obtains location information of the base station of the neighboring cell by using an OAM (Operation and Maintenance, OAM), and obtains location information of the local area UE by using a positioning manner, and according to the obtained location information of the base station and the The location information of the local area UE determines whether the UE is in the local area and the edge of the neighboring cell.
  • the specific positioning methods are: AOA+TA (Angle of Arrival+ Timing advance, arrival angle and timing advance) or OTDOA (observed Time Difference Of Arrival).
  • the base station determines whether the UE is interfered with by a plurality of specific implementation manners, for example, the base station determines whether the signal shield value of the neighboring cell reported by the local area UE is higher than a preset value of the signal shield value of the local area.
  • a threshold value for example, OdB
  • the base station determines whether the absolute value of the difference between the signal shield value of the neighboring cell reported by the local area UE and the signal shield value of the local area is less than a preset second threshold (for example, 3dB), if yes, the signal strength of the local area and the neighboring cell is equal, and it is determined that the UE is at the cell edge, and the local area UE is considered to be subject to interference. Or determining, by the base station, that the path loss value of the local area UE to the neighboring cell is lower than a third threshold value (for example, OdB) preset by the path loss value of the local area, and if yes, determining the local area The UE is located near the cell edge of the neighboring cell.
  • a preset second threshold for example, 3dB
  • the base station determines whether the absolute value of the difference between the path loss value of the local area UE to the neighboring cell and the path loss value of the local area is less than a preset fourth threshold (for example, 3 dB) And if yes, determining that the local area UE is located near a cell edge of the neighboring cell.
  • the signal shield includes RSRP (Reference Signal Received Power) or RSRQ (Reference Signal Received Quality).
  • the path loss of the local area may be obtained by subtracting the local area signal transmission power (such as the RSRP) reported by the UE, and the path loss of the local area UE to the neighboring cell may pass through the neighboring area.
  • the reference signal transmission power is obtained by subtracting the neighboring area signal shield amount reported by the UE.
  • the base station has multiple scheduling modes, for example, the base station and the base station of the neighboring cell use the same uplink and downlink configuration.
  • the base station negotiates with the base station of the neighboring cell to determine the same uplink and downlink configuration. For example, the base station determines a configuration, and sends the sequence number of the configuration to the base station of the neighboring cell, and then the base station of the neighboring cell returns an acknowledgement message, or the base station of the neighboring cell determines a configuration, and The sequence number of the configuration is sent to the base station of the local area, and the base station of the local area returns an acknowledgement message.
  • the base station and the base station of the neighboring cell use the default uplink and downlink configuration.
  • the base station of the local area and the base station of the neighboring cell are configured with the same default uplink and downlink configuration.
  • the base station schedules uplink and downlink transmissions of the local area UE in a fixed transmission subframe
  • the fixed transmission subframe includes a fixed uplink subframe and a fixed downlink subframe.
  • the downlink transmission scheduling is fixed to the downlink subframes 0, 1, 5, and 6 in each radio frame
  • the uplink transmission scheduling is fixed in the subframes 2 and 7 of the uplink transmission in each radio frame.
  • the Macro base station finds that the MUE (the UE in the macro cell) may generate the cross-slot interference between the He B UE (the UE under the home base station), and then downlinks it to the downlink sub-frame in the radio frame.
  • the uplink scheduling is in uplink subframes 2 and 7.
  • Step 501 The base station can obtain uplink and downlink configuration information of the neighboring cell through network interface signaling interaction. Any manner in which the uplink and downlink configuration information of the neighboring cell can be obtained is applicable to the embodiment.
  • Step 502 The base station determines, according to the uplink and downlink configuration information of the local area and the uplink and downlink configuration information of the neighboring cell, whether the UE in the local area and the neighboring cell UE transmit in different directions at the same time. If yes, proceed to step 503, otherwise, the process ends. .
  • Step 503 The base station determines whether the UE is in the local area and the edge of the neighboring cell, and if yes, determines that the local area UE is located near the cell edge of the neighboring cell, and continues to step 504, otherwise ends the process.
  • Step 504 The base station negotiates with the base station of the neighboring cell to determine the same uplink and downlink configuration.
  • the transmission scheduling method is as follows:
  • Step 601 The base station can obtain the uplink and downlink configuration information of the neighboring cell by using the network interface signaling interaction.
  • Step 602 The base station determines, according to the uplink and downlink configuration information of the local area and the uplink and downlink configuration information of the neighboring cell, whether the UE in the local area and the neighboring cell UE transmit in different directions at the same time. If yes, proceed to step 603, otherwise, the process ends. .
  • Step 603 The base station determines, by using the measurement result reported by the UE in the local area, whether the UE in the local area is located at a cell edge close to the neighboring cell, and if yes, proceeding to step 604, otherwise ending the process.
  • Step 604 The base station schedules uplink and downlink transmissions of the local area UE in a fixed transmission subframe.
  • the base station in this embodiment includes: an obtaining module 701, a transmission determining module 702, a interference determining module 703, and a scheduling module 704.
  • the base station includes a macro base station, a micro base station, a home base station, and the like.
  • the obtaining module 701 is configured to obtain uplink and downlink configuration information of the neighboring cell. Specifically, the obtaining module 701 obtains uplink and downlink configuration information of the neighboring cell by using the network interface signaling interaction.
  • the transmission judging module 702 is configured to determine, according to the uplink and downlink configuration information of the local area and the uplink and downlink configuration information of the neighboring cell, whether the transmission between the local area UE and the neighboring cell UE is performed at different directions.
  • the interference determination module 703 is configured to determine, when the UE in the local area and the neighboring cell UE transmit directions in different directions at the same time, the base station determines whether the local area UE is located at a cell edge close to the neighboring cell. Specifically, the interference determination module 703 determines whether the UE is in the local area and the edge of the neighboring cell, and if yes, determines that the local area UE is located near the cell edge of the neighboring cell; or, by using the local area The measurement result reported by the UE determines whether the local area UE is located near the cell edge of the neighboring cell.
  • the scheduling module 704 is configured to: when the UE in the local area is located near the cell edge of the neighboring cell, schedule at least the uplink and downlink transmission of the local area UE to be transmitted in the same direction as the neighboring cell UE. . Specifically, the scheduling module 704 uses the same uplink and downlink configuration as the base station of the neighboring cell; or, the uplink and downlink transmission of the local area UE is scheduled in a fixed transmission subframe. The scheduling module 704 negotiates with the base station of the neighboring cell to determine the same uplink and downlink configuration; or, the base station with the neighboring cell uses the default uplink and downlink configuration.
  • the interference determination module 703 obtains the location information of the base station of the neighboring cell and the location information of the local area UE by using a positioning manner, and according to the obtained location information of the base station and the location information of the local area UE It is judged whether the UE is in the inner zone and the edge of the adjacent cell.
  • the interference determination module 703 obtains the location information of the base station of the neighboring cell by using the operation and maintenance entity OAM, and obtains the location information of the local area UE by using the location mode, and according to the obtained location information of the base station and the local area.
  • the location information of the UE determines whether the UE is in the local area and the edge of the neighboring cell.
  • the interference determination module 703 determines whether the signal shield value of the neighboring cell reported by the local area UE is higher than a preset first threshold value of the signal shield value of the local area, and if yes, determining The local area UE is located near the cell edge of the neighboring cell. Alternatively, the interference determination module 703 determines whether the absolute value of the difference between the signal shield value of the neighboring cell reported by the local area UE and the signal shield value of the local area is less than a preset second The threshold value, if yes, determining that the local area UE is located near a cell edge of the neighboring cell.
  • the interference determination module 703 determines that the path loss value of the local area UE to the neighboring cell is lower than a third threshold value preset by the path loss value of the local area, and if yes, determining the local area The UE is located near the cell edge of the neighboring cell. Alternatively, the interference determination module 703 determines whether the absolute value of the difference between the path loss value of the local area UE to the neighboring cell and the path loss value of the local area is less than a preset fourth threshold value. And if yes, determining that the local area UE is located near a cell edge of the neighboring cell.
  • the base station determines that there are different directions between the UE and the neighboring cell UE in the local area. And transmitting, and the UE in the local area is located near the cell edge of the neighboring cell, determining that the local area UE may be interfered, and the interference is mainly due to the simultaneous direction between the UE in the local area and the neighboring cell UE. Different transmissions, so the base station schedules at least the uplink and downlink transmission of the local area UE to transmit in the same direction as the neighboring cell UE at the same time to reduce interference.
  • the embodiments of the present invention basically provide multiple implementation modes for each link, which are flexible and applicable to multiple application scenarios and multiple systems.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • a computer-usable storage medium including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

公开了一种传输调度的方法，用于降低UE间交叉干扰。所述方法包括：基站获得相邻小区的上下行配置信息；基站根据本区的上下行配置信息和相邻小区的上下行配置信息，判断本区UE与相邻小区UE之间是否同时进行方向不同的传输；当本区UE与相邻小区UE之间同时进行方向不同的传输时，基站判断所述本区UE是否位于靠近所述相邻小区的小区边缘；在所述本区UE受到干扰时，基站至少将所述本区UE的上下行传输调度到与相邻小区UE同时进行相同方向的传输。本发明还公开了用于实现所述方法的装置。

Description

一种传输调度的方法及装置 本申请要求在 2011年 8月 5日提交中国专利局、 申请号为 201110224737.8、 发明名称为"一种 传输调度的方法及装置"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
本发明涉及通信领域， 特别是涉及传输调度的方法及装置。 背景技术
对于蜂窝系统釆用的基本的双工方式来说： TDD ( Time division duplex, 时分双工 ) 模式是指上下行链路使用同一个工作频带， 在不同的时间间隔上进行上下行信号的传 输， 上下行之间有 GP ( Guard Period, 保护间隔）； FDD ( Frequency Division Duplex 频分双工）模式则指上下行链路使用不同的工作频带， 可以在同一个时刻在不同的频率 载波上进行上下行信号的传输， 上下行之间有 GB ( Guard Band, 保护带宽）。 LTE ( Long Term Evolution, 长期演进） TDD系统的帧结构稍复杂一些， 如图 1所示， 一个无线帧长 度为 10ms, 包含特殊子帧和常规子帧两类共 10个子帧， 每个子帧为 lms。 特殊子帧分为 3 个时隙： DwPTS ( Downlink Pilot Time Slot, 下行导频时隙）、 GP和 UpPTS ( Uplink Pilot Time Slot,上行导频时隙）。常规子帧包括上行子帧和下行子帧，用于传输上行控制信令、 下行控制信令和业务数据等。 其中在一个无线帧中， 可以配置两个特殊子帧 （位于子帧 #1和 #6 ), 也可以配置一个特殊子帧 （位于子帧 #1 )。 子帧 #0和子帧 #5以及特殊子帧中的 DwPTS时隙总是用作下行传输， 子帧 #2以及特殊子帧中的 UpPTS时隙总是用于上行传 输， 其它子帧可以依据需要配置为用作上行传输或者下行传输。
LTE TDD上下行子帧配置格式
Figure imgf000003_0001
TD-LTE中上下行子帧分配支持 7种不同的方式， 具体配置参数如表 1所示， D表示用 作下行传输， U表示用作上行传输， S表示该子帧是特殊子帧， 包含 DwPTS、 GP和 UpPTS 三部分。
上述特殊子帧配置和上下行子帧分配方式通过 SI ( System Information, 系统信息） 广播给小区内的所有用户。
本申请的发明人发现， 在实际系统中， 不同的小区如果设置了不同的上下行子帧配 置， 则会造成相邻小区的交叉时隙千扰， 如图 2所示。 需要指出的是， 这里的相邻小区 可以是地理上相邻的使用同样 TDD载波的小区 （如图 2所示）。 同时， 这里所述的小区可 以是同层部署的小区 （例如宏小区）， 也可以是分层部署的小区 （例如包含宏小区、 微 小区、 家庭基站覆盖的小区等）。 此类交叉时隙千扰对于系统性能的影响跟部署场景以 及无线环境等密切相关， 例如如果相邻小区之间距离较近， 或者信号传播条件较好， 则 交叉时隙千扰会严重降低处于接收状态的小区性能； 如果相邻小区之间距离较远， 或者 存在有效的信号遮挡等， 则交叉时隙千扰水平对于处于接收状态的小区性能影响并不 大。
现有提出的解决方案中， 不能有效的解决交叉时隙千扰对系统性能的严重影响， 特 别是图 2所示 UE与 UE之间的上下行交叉时隙千扰。 发明内容
本发明实施例提供一种传输调度的方法及装置， 用于降低 UE间交叉千扰。
一种传输调度的方法， 包括以下步骤：
基站获得相邻小区的上下行配置信息；
基站根据本区的上下行配置信息和相邻小区的上下行配置信息，判断本区 UE与相邻 小区 UE之间是否同时进行方向不同的传输；
当本区 UE与相邻小区 UE之间同时进行方向不同的传输时， 基站判断所述本区 UE是 否受到千扰；
在所述本区 UE受到千扰时， 基站至少将所述本区 UE的上下行传输调度到与相邻小 区 UE同时进行相同方向传输的子帧上。
一种基站， 包括：
获取模块， 用于获得相邻小区的上下行配置信息；
传输判断模块， 用于根据本区的上下行配置信息和相邻小区的上下行配置信息， 判 断本区 UE与相邻小区 UE之间是否同时进行方向不同的传输；
千扰判断模块， 用于当本区 UE与相邻小区 UE之间同时进行方向不同的传输时， 基 站判断所述本区 UE是否受到千扰；
调度模块， 用于在所述本区 UE受到千扰时， 至少将所述本区 UE的上下行传输调度 到与相邻小区 UE同时进行相同方向传输的子帧上。 本发明实施例中基站在确定本区内有 UE与相邻小区 UE之间同时进行方向不同的传 输， 以及该本区 UE位于靠近所述相邻小区的小区边缘时， 确定该本区 UE可能受到千扰， 并且该千扰主要是因为本区内 UE与相邻小区 UE之间同时进行方向不同的传输， 因此基 站至少将所述本区 UE的上下行传输调度到与相邻小区 UE同时进行相同方向的传输， 以 降低千扰。 附图说明
图 1为现有技术中帧结构的示意图；
图 2为现有技术中系统结构的示意图；
图 3为本发明实施例中传输调度的主要方法流程图；
图 4为本发明实施例中小区间位置的示意图；
图 5为本发明实施例中本区与邻区釆用相同配置的传输调度方法流程图； 图 6为本发明实施例中基站将所述本区 UE的上下行传输调度在固定传输的子帧上 时， 传输调度方法流程图；
图 7为本发明实施例中基站的结构图。 具体实施方式
本发明实施例中基站在确定本区内有 UE与相邻小区 UE之间同时进行方向不同的 传输， 以及该本区 UE位于靠近所述相邻小区的小区边缘时， 确定该本区 UE可能受到 千扰， 并且该千扰主要是因为本区内 UE与相邻小区 UE之间同时进行方向不同的传输， 因此基站至少将所述本区 UE的上下行传输调度到与相邻小区 UE同时进行相同方向的 传输， 以降低千扰。
本实施例中假设同一网络中的相邻 TDD 小区是时间同步的， 并且这里提到的相邻 小区可以是同频的相邻小区，也可以是邻频的相邻小区；同时可以是同层的相邻小区〔例 如都为 Macro (宏）小区〕，也可以是分层部署的相邻小区〔例如 Macro小区和 femto (毫 微微） 小区， 或者 Macro小区和 Pico (微） 小区〕。
参见图 3 , 本实施例中传输调度的主要方法流程如下：
步骤 301 : 基站获得相邻小区的上下行配置信息。 具体的， 基站可通过网络接口信 令交互等方式获得相邻小区的上下行配置信息。
步骤 302: 基站根据本区的上下行配置信息和相邻小区的上下行配置信息， 判断本 区 UE与相邻小区 UE之间是否同时进行方向不同的传输。 基站判断本区和相邻小区是 否釆用相同的配置即可， 配置序号不同就存在同时进行不同方向传输的情况。
步骤 303： 当本区 UE与相邻小区 UE之间同时进行方向不同的传输时，基站判断所 述本区 UE是否位于靠近所述相邻小区的小区边缘。 当本区 UE与相邻小区 UE之间同 时进行方向相同的传输时， 结束本流程。
步骤 304: 在所述本区 UE位于靠近所述相邻小区的小区边缘时， 基站至少将所述 本区 UE的上下行传输调度到与相邻小区 UE同时进行相同方向传输的子帧上。 在所述 本区 UE未受到千扰时， 可继续按照当前的配置对 UE进行调度。
在步骤 303中有多种具体实现方式， 如基站判断 UE是否处于本区与所述相邻小区 的边缘， 若是， 则确定所述本区 UE位于靠近所述相邻小区的小区边缘。 或者， 基站通 过所述本区 UE上报的测量结果判断所述本区 UE是否位于靠近所述相邻小区的小区边 缘。 能够确定所述本区 UE是否位于靠近所述相邻小区的小区边缘的技术均适用于本实 施例。 其中， 基站通过定位方式获得所述相邻小区的基站的位置信息和所述本区 UE的 位置信息， 并根据获得的基站的位置信息和所述本区 UE的位置信息判断 UE是否处于 本区与所述相邻小区的边缘。 或者， 基站通过 OAM ( Operation and Maintenance, 操作 维护实体）获得所述相邻小区的基站的位置信息和通过定位方式获得所述本区 UE的位 置信息， 并根据获得的基站的位置信息和所述本区 UE的位置信息判断 UE是否处于本 区与所述相邻小区的边缘。 具体的定位方式有： AOA+TA ( Angle of Arrival+ Timing advance, 到达角和定时提前）或 OTDOA ( Observed Time Difference Of Arrival, 到达时 间差）等。
基站判断 UE是否受千扰也有多种具体实现方式， 如基站判断所述本区 UE上报的 所述相邻小区的信号盾量值是否高出所述本区的信号盾量值预设的第一门限值 (例如 OdB ), 若是， 则相邻小区的信号较强， 确定所述本区 UE位于靠近所述相邻小区的小区 边缘。 或者， 基站判断所述本区 UE上报的所述相邻小区的信号盾量值与所述本区的信 号盾量值之间的差值的绝对值是否小于预设的第二门限值（例如 3dB ), 若是， 则本区与 相邻小区的信号强度相当， 确定 UE处于小区边缘， 认为所述本区 UE可能受到千扰。 或者， 基站判断所述本区 UE到所述相邻小区的路径损耗值低过所述本区的路径损耗值 预设的第三门限值 (例如 OdB ), 若是， 则确定所述本区 UE位于靠近所述相邻小区的小 区边缘。 或者， 基站判断所述本区 UE到所述相邻小区的路径损耗值与所述本区的路径 损耗值之间的差值的绝对值是否小于预设的第四门限值 (例如 3dB ), 若是， 则确定所述 本区 UE位于靠近所述相邻小区的小区边缘。其中，信号盾量包括 RSRP( Reference Signal Received Power, 参考信号接收功率）或 RSRQ ( Reference Signal Received Quality, 参 考信号接收盾量） 等。 所述本区的路径损耗可以通过将本区参考信号发射功率减去 UE 上报的本区信号盾量（如 RSRP )得到， 所述本区 UE到所述相邻小区的路径损耗可以 通过邻区参考信号发射功率减去 UE上报的邻区信号盾量得到。 邻区的参考信号发射功 率可以通过小区之间的网络接口通知给本区。 步骤 304中基站有多种调度方式， 如基站与所述相邻小区的基站釆用相同的上下行 配置。 具体的， 基站与所述相邻小区的基站协商， 确定相同的上下行配置。 例如， 基站 确定一种配置， 并将该配置的序号发送给所述相邻小区的基站， 然后所述相邻小区的基 站返回确认消息， 或者所述相邻小区的基站确定一种配置， 并将该配置的序号发送给本 区基站， 本区基站返回确认消息。 或者， 基站与所述相邻小区的基站均釆用默认的上下 行配置。 其中， 本区基站与所述相邻小区的基站配置有相同的默认上下行配置。
或者， 基站将所述本区 UE的上下行传输调度在固定传输的子帧上， 固定传输的子 帧包括固定上行子帧和固定下行子帧。 例如下行传输调度在每个无线帧中固定为下行的 子帧 0、 1、 5、 6上， 上行传输调度在每个无线帧中固定为上行传输的子帧 2、 7上。 如 图 4所示， Macro基站发现 MUE (宏小区中的 UE )可能与 He B UE (家庭基站下的 UE )之间产生交叉时隙千扰， 则将其下行调度在无线帧中的下行子帧 0、 1、 4、 5、 6、 9中， 上行调度在上行子帧 2、 7中。
由于存在以上多种实施方式， 下面通过两个典型实施例来详细介绍。
参见图 5 , 本实施例中本区与邻区釆用相同配置的传输调度方法流程如下： 步骤 501 : 基站可通过网络接口信令交互获得相邻小区的上下行配置信息。 任何可 获得相邻小区的上下行配置信息的方式均适用于本实施例。
步骤 502: 基站根据本区的上下行配置信息和相邻小区的上下行配置信息， 判断本 区 UE与相邻小区 UE之间是否同时进行方向不同的传输， 若是， 继续步骤 503 , 否则结 束流程。
步骤 503: 基站判断 UE是否处于本区与所述相邻小区的边缘， 若是， 则确定所述 本区 UE位于靠近所述相邻小区的小区边缘， 继续步骤 504, 否则结束流程。
步骤 504: 基站与所述相邻小区的基站协商， 确定相同的上下行配置。
参见图 6, 本实施例中基站将所述本区 UE的上下行传输调度在固定传输的子帧上 时， 传输调度方法流程如下：
步骤 601 : 基站可通过网络接口信令交互获得相邻小区的上下行配置信息。
步骤 602: 基站根据本区的上下行配置信息和相邻小区的上下行配置信息， 判断本 区 UE与相邻小区 UE之间是否同时进行方向不同的传输， 若是， 继续步骤 603 , 否则结 束流程。
步骤 603:基站通过所述本区 UE上报的测量结果判断所述本区 UE是否位于靠近所 述相邻小区的小区边缘， 若是， 则继续步骤 604, 否则结束流程。
步骤 604: 基站将所述本区 UE的上下行传输调度在固定传输的子帧上。
通过以上描述了解了调度传输的实现过程， 该过程主要由基站实现， 下面对基站的 内部结构和功能进行介绍。 参见图 7, 本实施例中基站包括： 获取模块 701、 传输判断模块 702、 千扰判断模块 703和调度模块 704。 该基站包括宏基站、 微基站、 家庭基站等。
获取模块 701用于获得相邻小区的上下行配置信息。 具体的， 获取模块 701通过网 络接口信令交互获得相邻小区的上下行配置信息。
传输判断模块 702用于根据本区的上下行配置信息和相邻小区的上下行配置信息， 判断本区 UE与相邻小区 UE之间是否同时进行方向不同的传输。
千扰判断模块 703用于当本区 UE与相邻小区 UE之间同时进行方向不同的传输时， 基站判断所述本区 UE是否位于靠近所述相邻小区的小区边缘。 具体的， 千扰判断模块 703判断 UE是否处于本区与所述相邻小区的边缘，若是，则确定所述本区 UE位于靠近 所述相邻小区的小区边缘； 或者， 通过所述本区 UE上报的测量结果判断所述本区 UE 是否位于靠近所述相邻小区的小区边缘。
调度模块 704用于在所述本区 UE位于靠近所述相邻小区的小区边缘时， 至少将所 述本区 UE的上下行传输调度到与相邻小区 UE同时进行相同方向传输的子帧上。 具体 的， 调度模块 704 与所述相邻小区的基站釆用相同的上下行配置； 或者， 将所述本区 UE的上下行传输调度在固定传输的子帧上。 其中， 调度模块 704与所述相邻小区的基 站协商， 确定相同的上下行配置； 或者， 与所述相邻小区的基站均釆用默认的上下行配 置。
较佳的， 千扰判断模块 703通过定位方式获得所述相邻小区的基站的位置信息和所 述本区 UE的位置信息， 并根据获得的基站的位置信息和所述本区 UE的位置信息判断 UE是否处于本区与所述相邻小区的边缘。 或者， 千扰判断模块 703通过操作维护实体 OAM获得所述相邻小区的基站的位置信息和通过定位方式获得所述本区 UE的位置信 息， 并根据获得的基站的位置信息和所述本区 UE的位置信息判断 UE是否处于本区与 所述相邻小区的边缘。 例如， 千扰判断模块 703判断所述本区 UE上报的所述相邻小区 的信号盾量值是否高出所述本区的信号盾量值预设的第一门限值， 若是， 则确定所述本 区 UE位于靠近所述相邻小区的小区边缘。 或者， 千扰判断模块 703判断所述本区 UE 上报的所述相邻小区的信号盾量值与所述本区的信号盾量值之间的差值的绝对值是否 小于预设的第二门限值， 若是， 则确定所述本区 UE位于靠近所述相邻小区的小区边缘。 或者， 千扰判断模块 703判断所述本区 UE到所述相邻小区的路径损耗值低过所述本区 的路径损耗值预设的第三门限值， 若是， 则确定所述本区 UE位于靠近所述相邻小区的 小区边缘。 或者， 千扰判断模块 703判断所述本区 UE到所述相邻小区的路径损耗值与 所述本区的路径损耗值之间的差值的绝对值是否小于预设的第四门限值 , 若是， 则确定 所述本区 UE位于靠近所述相邻小区的小区边缘。
本发明实施例中基站在确定本区内有 UE与相邻小区 UE之间同时进行方向不同的 传输， 以及该本区 UE位于靠近所述相邻小区的小区边缘时， 确定该本区 UE可能受到 千扰， 并且该千扰主要是因为本区内 UE与相邻小区 UE之间同时进行方向不同的传输， 因此基站至少将所述本区 UE的上下行传输调度到与相邻小区 UE同时进行相同方向的 传输， 以降低千扰。 本发明实施例基本为每个环节都提供了多种实现方式， 实现灵活， 适用于多种应用场景和多种系统。
本领域内的技术人员应明白， 本发明的实施例可提供为方法、 系统、 或计算机程序 产品。 因此， 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面 的实施例的形式。 而且， 本发明可釆用在一个或多个其中包含有计算机可用程序代码的 计算机可用存储介盾 （包括但不限于磁盘存储器、 CD-ROM、 光学存储器等）上实施的 计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备（系统）、 和计算机程序产品的流程 图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每 一流程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些 计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备 的处理器以产生一个机器， 使得通过计算机或其他可编程数据处理设备的处理器执行的 指令产生用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中 指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定 方式工作的计算机可读存储器中， 使得存储在该计算机可读存储器中的指令产生包括指 令装置的制造品， 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框 或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上， 使得在计算 机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理， 从而在计算机或 其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框 图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例， 但本领域内的技术人员一旦得知了基本创造性 概念， 则可对这些实施例作出另外的变更和修改。 所以， 所附权利要求意欲解释为包括 优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明 实施例的精神和范围。 这样， 倘若本发明实施例的这些修改和变型属于本发明权利要求 及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种传输调度的方法， 其特征在于， 包括以下步骤：
基站获得相邻小区的上下行配置信息；
基站根据本区的上下行配置信息和相邻小区的上下行配置信息， 判断本区用户设备
UE与相邻小区 UE之间是否同时进行方向不同的传输；
当本区 UE与相邻小区 UE之间同时进行方向不同的传输时，基站判断所述本区 UE 是否位于靠近所述相邻小区的小区边缘；
在所述本区 UE位于靠近所述相邻小区的小区边缘时， 基站至少将所述本区 UE的 上下行传输调度到与相邻小区 UE同时进行相同方向传输的子帧上。
2、 如权利要求 1 所述的方法， 其特征在于， 基站获得相邻小区的上下行配置信息 的步骤包括： 基站通过网络接口信令交互获得相邻小区的上下行配置信息。
3、 如权利要求 1所述的方法， 其特征在于， 基站判断所述本区 UE是否位于靠近所 述相邻小区的小区边缘的步骤包括：
基站判断 UE是否处于本区与所述相邻小区的边缘， 若是， 则确定所述本区 UE位 于靠近所述相邻小区的小区边缘； 或者
基站通过所述本区 UE上报的测量结果判断所述本区 UE是否位于靠近所述相邻小 区的小区边缘。
4、 如权利要求 3所述的方法， 其特征在于， 基站判断 UE是否处于本区与所述相邻 小区的边缘的步骤包括：
基站通过定位方式获得所述相邻小区的基站的位置信息和所述本区 UE 的位置信 息， 并根据获得的基站的位置信息和所述本区 UE的位置信息判断 UE是否处于本区与 所述相邻小区的边缘； 或者
基站通过操作维护实体 OAM获得所述相邻小区的基站的位置信息和通过定位方式 获得所述本区 UE的位置信息， 并根据获得的基站的位置信息和所述本区 UE的位置信 息判断 UE是否处于本区与所述相邻小区的边缘。
5、 如权利要求 3所述的方法， 其特征在于， 基站通过所述本区 UE上报的测量结果 判断所述本区 UE是否位于靠近所述相邻小区的小区边缘的步骤包括：
基站判断所述本区 UE上报的所述相邻小区的信号盾量值是否高出所述本区的信号 盾量值预设的第一门限值， 若是， 则确定所述本区 UE位于靠近所述相邻小区的小区边 缘； 或者
基站判断所述本区 UE上报的所述相邻小区的信号盾量值与所述本区的信号盾量值 之间的差值的绝对值是否小于预设的第二门限值， 若是， 则确定所述本区 UE位于靠近 所述相邻小区的小区边缘； 或者 基站判断所述本区 UE到所述相邻小区的路径损耗值低过所述本区的路径损耗值预 设的第三门限值， 若是， 则确定所述本区 UE位于靠近所述相邻小区的小区边缘； 或者 基站判断所述本区 UE到所述相邻小区的路径损耗值与所述本区的路径损耗值之间 的差值的绝对值是否小于预设的第四门限值， 若是， 则确定所述本区 UE位于靠近所述 相邻小区的小区边缘。
6、 如权利要求 1所述的方法， 其特征在于， 基站至少将所述本区 UE的上下行传输 调度到与相邻小区 UE同时进行相同方向的传输的子帧上的步骤包括：
基站与所述相邻小区的基站釆用相同的上下行配置； 或者
基站将所述本区 UE的上行传输调度在固定为上行传输的子帧上； 以及， 基站将所 述本区 UE的下行传输调度在固定为下行传输的子帧上。
7、 如权利要求 6 所述的方法， 其特征在于， 基站与所述相邻小区的基站釆用相同 的上下行配置的步骤包括：
基站与所述相邻小区的基站协商， 确定相同的上下行配置； 或者
基站与所述相邻小区的基站均釆用默认的上下行配置。
8、 一种基站， 其特征在于， 包括：
获取模块， 用于获得相邻小区的上下行配置信息；
传输判断模块， 用于根据本区的上下行配置信息和相邻小区的上下行配置信息， 判 断本区 UE与相邻小区 UE之间是否同时进行方向不同的传输；
千扰判断模块， 用于当本区 UE与相邻小区 UE之间同时进行方向不同的传输时， 基站判断所述本区 UE是否位于靠近所述相邻小区的小区边缘；
调度模块， 用于在所述本区 UE位于靠近所述相邻小区的小区边缘时， 至少将所述 本区 UE的上下行传输调度到与相邻小区 UE同时进行相同方向传输的子帧上。
9、 如权利要求 8 所述的基站， 其特征在于， 获取模块通过网络接口信令交互获得 相邻小区的上下行配置信息。
10、 如权利要求 8所述的基站， 其特征在于， 千扰判断模块判断 UE是否处于本区 与所述相邻小区的边缘， 若是， 则确定所述本区 UE位于靠近所述相邻小区的小区边缘； 或者， 通过所述本区 UE上报的测量结果判断所述本区 UE是否位于靠近所述相邻小区 的小区边缘。
11、如权利要求 10所述的基站， 其特征在于， 千扰判断模块通过定位方式获得所述 相邻小区的基站的位置信息和所述本区 UE的位置信息， 并根据获得的基站的位置信息 和所述本区 UE的位置信息判断 UE是否处于本区与所述相邻小区的边缘； 或者
千扰判断模块通过操作维护实体 OAM获得所述相邻小区的基站的位置信息和通过 定位方式获得所述本区 UE的位置信息， 并根据获得的基站的位置信息和所述本区 UE 的位置信息判断 UE是否处于本区与所述相邻小区的边缘。
12、 如权利要求 10所述的基站， 其特征在于， 千扰判断模块判断所述本区 UE上报 的所述相邻小区的信号盾量值是否高出所述本区的信号盾量值预设的第一门限值， 若 是， 则确定所述本区 UE位于靠近所述相邻小区的小区边缘； 或者
千扰判断模块判断所述本区 UE上报的所述相邻小区的信号盾量值与所述本区的信 号盾量值之间的差值的绝对值是否小于预设的第二门限值， 若是， 则确定所述本区 UE 位于靠近所述相邻小区的小区边缘； 或者
千扰判断模块判断所述本区 UE到所述相邻小区的路径损耗值低过所述本区的路径 损耗值预设的第三门限值， 若是， 则确定所述本区 UE位于靠近所述相邻小区的小区边 缘； 或者
千扰判断模块判断所述本区 UE到所述相邻小区的路径损耗值与所述本区的路径损 耗值之间的差值的绝对值是否小于预设的第四门限值 , 若是， 则确定所述本区 UE位于 靠近所述相邻小区的小区边缘。
13、 如权利要求 8所述的基站， 其特征在于， 调度模块与所述相邻小区的基站釆用 相同的上下行配置； 或者， 将所述本区 UE的上行传输调度在固定为上行传输的子帧上， 以及将所述本区 UE的下行传输调度在固定为下行传输的子帧上。
14、 如权利要求 13 所述的基站， 其特征在于， 调度模块与所述相邻小区的基站协 商， 确定相同的上下行配置； 或者， 与所述相邻小区的基站均釆用默认的上下行配置。
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