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    • 1. 发明申请
    • TERMINAL MEASUREMENTS OF INTERFERENCE IN WIRELESS COMMUNICATION
    • 无线通信干扰的终端测量
    • WO2012059139A1
    • 2012-05-10
    • PCT/EP2010/066956
    • 2010-11-05
    • FUJITSU LIMITEDMOULSLEY, TimothyBUCKNELL, PaulXIAO, Hui
    • MOULSLEY, TimothyBUCKNELL, PaulXIAO, Hui
    • H04W36/00
    • H04W36/0088H04W24/10H04W72/085
    • A new measurement report and/or reporting trigger for an LTE-based wireless communication network, in order to identify the occurrence of interference which is non-uniform in the frequency domain The new report/trigger may be a modification of existing RSSI, RSRP and/or RSRQ to focus on specific sub-bands, sub-frames and/or sub-intervals of sub-frames within the available bandwidth and frame structure A UE in the network monitors a measurement object such as received signal strength for each of a plurality of cells (S10) to obtain measured values, computes a difference or ratio between two such measured values (S20) and once a trigger event has occurred (S30), which may be a novel trigger based on said difference/ratio, send a report (S40) to its serving station The report may indicate the computed difference/ratio and/or the measured values themselves
    • 用于基于LTE的无线通信网络的新的测量报告和/或报告触发器,以便识别在频域中不均匀的干扰的发生新的报告/触发可以是现有RSSI,RSRP和 /或RSRQ以专注于可用带宽和帧结构内的子帧的特定子带,子帧和/或子间隔。网络中的UE监视诸如接收信号强度之类的测量对象 的单元(S10)以获得测量值,计算两个这样的测量值之间的差或比(S20)和一旦触发事件发生(S30),其可以是基于所述差/比的新颖触发,发送报告 (S40)到其服务站报告可以指示计算出的差/比和/或测量值本身
    • 2. 发明申请
    • CHANNEL STATE FEEDBACK FOR MULTI-CELL MIMO
    • 用于多小区MIMO的信道状态反馈
    • WO2012028204A1
    • 2012-03-08
    • PCT/EP2010/062969
    • 2010-09-03
    • FUJITSU LIMITEDMOULSLEY, TimothyXIAO, HuiSARPERI, Luciano
    • MOULSLEY, TimothyXIAO, HuiSARPERI, Luciano
    • H04B7/06H04B7/02H04B7/04
    • H04W72/042H04B7/024H04B7/0417H04B7/0626H04B7/0645H04B7/0658
    • A method is disclosed which is intended for use in multiple-input multiple-output (MIMO) wireless communication systems of the kind which have a plurality of adjacent cells, each containing one or more base stations operable to transmit signals to, and receive signals transmitted from, one or more user equipments The user equipments are operable to feed back to the relevant base statιon(s) channel state information relating to channel(s) between the relevant base statιon(s) and the user equipments, and the base stations are operable to adapt signals for transmission to user equipments, based on the fed back channel state information The proposed method involves identifying uplink resources for a user equipment-initiated channel state message, the user equipment judging a need for a user equipment- initiated channel state message based on information not available to the network, and the user equipment sending the user equipment-initiated channel state message to the network using the identified uplink resources The user equipment-initiated channel state message may be a CSI report or a request to change a CSI reporting rate, reporting rate or reporting mode.
    • 公开了一种旨在用于具有多个相邻小区的多输入多输出(MIMO)无线通信系统的方法,每个相邻小区包含一个或多个基站,用于向所述多输入多输出(MIMO)无线通信系统中发送信号,并接收所发送的信号 来自一个或多个用户设备用户设备可操作地反馈到与相关基站和用户设备之间的信道相关的相关基站信道状态信息,以及 所述基站可操作以基于所述反馈信道状态信息来适应用于向用户设备发送的信号。所提出的方法涉及识别用户设备发起的信道状态消息的上行链路资源,所述用户设备判断对用户设备 - 基于网络不可用的信息发起信道状态消息,并且用户设备使用i将用户设备发起的信道状态消息发送到网络 授权上行链路资源用户设备发起的信道状态消息可以是CSI报告或改变CSI报告速率,报告速率或报告模式的请求。
    • 3. 发明申请
    • SCHEDULING FOR COORDINATED MULTI-CELL MIMO SYSTEMS
    • 协调多小区MIMO系统的调度
    • WO2012028180A1
    • 2012-03-08
    • PCT/EP2010/062764
    • 2010-08-31
    • FUJITSU LIMITEDXIAO, HuiSARPERI, Luciano
    • XIAO, HuiSARPERI, Luciano
    • H04W72/12
    • H04W72/1263H04B7/024H04B7/0617H04L5/0073H04W72/1252
    • A method of scheduling coordination among cells in a cellular wireless network for use in multi-cell multiple-input/multiple-output communication with user equipment in the cells, wherein: a first scheduling process is carried out by a First scheduler local to a cell to select at least one user equipment, from amongst user equipment within the said cell, to be served by a coordinating group of cells in the network, and a second scheduling process, different from the first scheduling process, is carried out by a second scheduler associated with the said cell and with at least one other cell in the network, in which second scheduling process at least one such group of cells is selected to be a coordinating group of cells for serving the user equipment, selected by the first scheduling process, from amongst a measurement set of B cells in the network (where B ≥ 1 ) for which measurements are sent by the selected user equipment; the second scheduling process comprising: a determining step in which it is determined which group c i of cells, from a set A consisting of all (I) different possible groups of cells in the measurement set of a predetermined group size B c (where B c ≤ B), provides the largest value of a selection parameter W(c i ), which selection parameter is dependent upon at least the long-term link power coupling weights PW(c i ) and spatial correlation weights d(c i ) between user equipment in the said group of cells, where PW(c i ) is the sum of the long-term interference powers measured by each selected user equipment from the first scheduling process in the group q in respect of all cells in group q, and d(c i ) is determined on the basis of spatial correlation matrices derived from user equipment associated with each cell in the group c i on the basis of either explicit or implicit channel state information; and a selection step in which the group c i is selected to be a coordinating group of cells for the selected user equipment.
    • 一种调度蜂窝无线网络中的小区之间的协调的方法,用于与小区中的用户设备的多小区多输入/多输出通信,其中:第一调度过程由小区的本地第一调度器执行 从所述小区内的用户设备中选择至少一个用户设备由网络中的协调小区组服务,并且与第一调度过程不同的第二调度过程由第二调度器 与所述小区和网络中的至少一个其他小区相关联,其中第二调度过程至少一个这样的小区组被选择为用于服务由第一调度过程选择的用户设备的小区的协调组, 从所选择的用户设备发送测量的网络中的B个小区的测量集合(其中B = 1); 第二调度处理包括:确定步骤,其中确定从预定组大小Bc的测量集合中的所有(I)个不同可能的单元组组成的集合A(其中Bc = B )提供选择参数W(ci)的最大值,该选择参数至少取决于所述组中的用户设备之间的长期链路功率耦合权重PW(ci)和空间相关权重d(ci) 的小区,其中PW(ci)是由群组q中关于组q中的所有小区的第一调度过程由每个选定的用户设备测量的长期干扰功率之和,并且d(ci)被确定为 基于显式或隐式信道状态信息,从与组ci中的每个小区相关联的用户设备导出的空间相关矩阵的基础; 以及选择步骤,其中组ci被选择为所选用户设备的小区的协调组。
    • 4. 发明申请
    • FEEDBACK INTERVAL CONTROL IN MIMO-SYSTEMS
    • MIMO系统中的反馈间隔控制
    • WO2011076766A1
    • 2011-06-30
    • PCT/EP2010/070315
    • 2010-12-20
    • FUJITSU LIMITEDXIAO, HuiSARPERI, Luciano
    • XIAO, HuiSARPERI, Luciano
    • H04B7/04H04B7/02H04B7/06
    • H04B7/0417H04B7/024H04B7/0421H04B7/0478H04B7/0626H04B7/063H04B7/0632H04B7/0639H04B7/0647
    • A method is disclosed which is intended for use in multiple-input multiple-output (MIMO) wireless communication systems of the kind which have a plurality of adjacent cells, each containing one or more base stations operable to transmit signals to, and receive signals transmitted from, one or more users. The users are operable to feed back to the relevant base station(s) channel state information relating to channel(s) between the relevant base station(s) and the users, and the base stations are operable to adapt signals for transmission to users, based on the fed back channel state information, to account for channel variations. The proposed method involves obtaining information related to time-variation in channel spatial structure, and adjusting the timing with which a user feeds back channel state information, based on the time variation in channel spatial structure. The invention helps to achieve a suitable balance between the feedback overhead and system performance, and may be operable in systems operating according to various CoMP transmission modes.
    • 公开了一种旨在用于具有多个相邻小区的多输入多输出(MIMO)无线通信系统的方法,每个相邻小区包含一个或多个基站,用于向所述多输入多输出多输出 来自,一个或多个用户。 用户可操作地反馈到与相关基站和用户之间的信道相关的相关基站信道状态信息,并且基站可操作以适配用于传输给用户的信号, 基于反馈信道状态信息,以考虑信道变化。 所提出的方法涉及获取与信道空间结构中的时间变化相关的信息,并且基于信道空间结构的时间变化来调整用户反馈信道状态信息的定时。 本发明有助于在反馈开销和系统性能之间实现适当的平衡,并且可以在根据各种CoMP传输模式操作的系统中操作。
    • 5. 发明申请
    • CELL SELECTION FOR MIMO TRANSMISSION
    • 用于MIMO传输的小区选择
    • WO2011029458A1
    • 2011-03-17
    • PCT/EP2009/006572
    • 2009-09-10
    • FUJITSU LIMITEDXIAO, HuiSARPERI, Luciano
    • XIAO, HuiSARPERI, Luciano
    • H04L5/00H04L25/03
    • H04L5/0037H04L5/0023H04L5/006H04L5/0091H04L25/03343H04L2025/03426
    • In a method of selecting a cell or cells for use in multiple-input/multiple-output (MIMO) transmission to user equipment or a relay station in a serving cell of a cellular wireless network, there being a set of N cells of the cellular network from which a selection of cells is to be made, N being an integral number greater than one and the set including the serving cell, the received signal power of the serving cell and the received interference power of the other cells in the set relative to the serving cell are sorted in descending order of power P, such that P 0 ≥P 1 ≥... ≥PN- 1 , and a group of M cells are selected from the said set of N cells, where the cells selected are those giving the smallest value of M for which the inequality (I) is satisfied, β being a first decision threshold parameter. The first decision threshold parameter β may have a value allowing multi-cell MIMO transmission using the selected M cells to achieve a desired signal-to-interference ratio (SIR). In an optional preliminary step, a decision as to whether or not to use only the serving cell or multiple cells for transmission is made by comparing the ratio R of the received signal power from the serving cell to the sum of the received interference powers of all of the other cells in the said set of N cells with a second decision threshold parameter α, and deciding to use only the serving cell for transmission if R>α and multiple cells for transmission if R≤α.
    • 在选择用于在蜂窝无线网络的服务小区中的用户设备或中继站的多输入/多输出(MIMO)传输中使用的小区或小区的方法中,存在蜂窝小区的一组N个小区 要从其中进行细胞选择的网络,N是大于1的整数,并且包括服务小区的集合,服务小区的接收信号功率和所述集合中的其他小区的接收干扰功率相对于 按照功率P的降序对服务小区进行排序,使得P0 = P1 = ... = PN-1,从所述一组N个小区中选择一组M个小区,其中选择的小区是给出 满足不等式(I)的M的最小值,ß是第一判定阈值参数。 第一判定阈值参数β可以具有允许使用所选择的M个小区的多小区MIMO传输以获得期望的信号干扰比(SIR)的值。 在可选的初步步骤中,通过将来自服务小区的接收信号功率的比R与所有接收到的干扰功率之和进行比较来确定是否仅使用服务小区或多小区进行传输 在具有第二判定阈值参数a的所述N个小区组中的其他小区的其余小区,并且如果R> a,则决定仅使用所述服务小区进行传输,如果R = a,则决定仅使用用于传输的多个小区。
    • 6. 发明申请
    • CELL SELECTION FOR MULTI-CELL MIMO TRANSMISSION
    • 多小区MIMO传输的小区选择
    • WO2011114079A1
    • 2011-09-22
    • PCT/GB2010/000495
    • 2010-03-19
    • FUJITSU LIMITEDXIAO, HuiSARPERI, Luciano
    • XIAO, HuiSARPERI, Luciano
    • H04B7/02
    • H04B7/024H04L5/0035H04L25/0204H04L25/0242H04W48/20
    • A method for use in selecting a cell or cells, from amongst a set of cells in a cellular wireless network, for coordinated use in multi-cell multiple-input/multiple-output (MIMO) transmission so as to reduce feedback overhead, each cell of the said set having at least one MIMO channel characteristic which may vary with time at a measurable rate, comprises a cell selection process comprising the steps of: identifying a cell or subset of cells of the said set for which the time variation rate/rates of the said MIMO channel characteristic is/are the slowest of those of the cells in the said set; and selecting a cell or cells for use in multi-cell MIMO transmission from only the cell or subset of cells identified in the identifying step.
    • 一种用于从蜂窝无线网络中的一组小区中选择一个或多个小区的方法,用于多小区多输入/多输出(MIMO)传输中的协调使用,以减少反馈开销,每个小区 所述组具有可以以可测量速率随时间变化的至少一个MIMO信道特性,包括小区选择过程,其包括以下步骤:识别所述组的小区或小区的时间变化率/速率 的所述MIMO信道特性是所述组中的小区中最慢的; 以及仅从识别步骤中识别的小区或小区子集选择用于多小区MIMO传输的小区或小区。
    • 10. 发明公开
    • CHANNEL STATE FEEDBACK FOR MULTI-CELL MIMO
    • 用于多小区MIMO的信道状态反馈
    • EP2612451A1
    • 2013-07-10
    • EP10760944.8
    • 2010-09-03
    • Fujitsu Limited
    • MOULSLEY, TimothyXIAO, HuiSARPERI, Luciano
    • H04B7/06H04B7/02H04B7/04
    • H04W72/042H04B7/024H04B7/0417H04B7/0626H04B7/0645H04B7/0658
    • Disclosed is a method for use in a multiple-input multiple-output (MIMO) communication network in which the network includes a plurality of cells provided by one or more base stations operable to transmit signals on at least one downlink to, and receive signals on at least one uplink from, one or more user equipments. A user equipment feeds back to the network reports on channel state information, CSI, relating to one or more channels between base stations and that user equipment, and base stations adapt downlink signals to user equipments based on the CSI reports, the method including: identifying uplink resources for a user equipment-initiated channel state message; the user equipment judging a need for a user equipment-initiated channel state message based on information not available to the network; and the user equipment sending the user equipment-initiated channel state message to the network using the uplink resources identified.
    • 公开了一种方法,其打算用于具有多个相邻小区的多输入多输出(MIMO)无线通信系统,每个相邻小区包含一个或多个可操作用于向所述基站发送信号并且接收所发送的信号的基站 来自一个或多个用户设备用户设备可操作以将与相关基站和用户设备之间的信道有关的信道状态信息反馈给相关基站状态,并且基站是 可操作用于基于反馈的信道状态信息来适配用于传输到用户设备的信号。所提出的方法涉及识别用于用户设备发起的信道状态消息的上行链路资源,用户设备判断是否需要用户设备发起的信道状态消息 基于对网络不可用的信息,并且用户设备使用该信息将该用户设备发起的信道状态消息发送到网络 识别的上行链路资源用户设备发起的信道状态消息可以是CSI报告或改变CSI报告速率,报告速率或报告模式的请求。