公开(公告)号：US08811147B2

公开(公告)日：2014-08-19

申请号：US13553973

申请日：2012-07-20

申请人： Qimei Cui ,  Ping Zhang ,  Xiaofeng Tao ,  Bing Luo ,  Alexis Dowhuszko ,  Jyri Hamalainen

发明人： Qimei Cui ,  Ping Zhang ,  Xiaofeng Tao ,  Bing Luo ,  Alexis Dowhuszko ,  Jyri Hamalainen

IPC分类号： H04L5/12 ,  H04J3/00

CPC分类号： H04W52/40 ,  H04B7/024 ,  H04W52/143 ,  H04W52/241

摘要： A method for allocating downlink transmission power of coordinated transmission devices in coordinated multi-point transmission system includes the coordinated transmission devices receiving feedback of channel state information of sub-channels occupied by a terminal from the terminal. The channel state information includes channel phase information and channel amplitude information. Each of the coordinated transmission devices adjusts phases of their sending signals over its sub-channels respectively so as to make phase difference of the sending signals, which are received by the terminal from the coordinated transmission devices via a same sub-channel, to be minimal. Each of the coordinated transmission devices determines its power allocation proportions for the sub-channels on the basis of feedback of channel amplitude information from the terminal and the adjusted phases of the sending signals. By adapting coordinate Iterative Water filling Power Allocation Algorithm with low complexity, the capacity of the system is increased.

摘要翻译： 在协调多点传输系统中分配协同传输设备的下行传输功率的方法包括：从终端接收终端占用的子信道的信道状态信息反馈的协调传输设备。 信道状态信息包括信道相位信息和信道幅度信息。 每个协调传输设备分别通过其子信道调整其发送信号的相位，以便使终端从协同传输设备经由相同子信道接收的发送信号的相位差最小化 。 每个协调传输设备基于来自终端的信道幅度信息的反馈和发送信号的经调整的相位来确定其子信道的功率分配比例。 通过适应复杂度较低的坐标迭代注水功率分配算法，提高了系统的容量。

公开(公告)号：US20130329650A1

公开(公告)日：2013-12-12

申请号：US13553973

申请日：2012-07-20

申请人： Qimei Cui ,  Ping Zhang ,  Xiaofeng Tao ,  Bing Luo ,  Alexis Dowhuszko ,  Jyri Hamalainen

发明人： Qimei Cui ,  Ping Zhang ,  Xiaofeng Tao ,  Bing Luo ,  Alexis Dowhuszko ,  Jyri Hamalainen

IPC分类号： H04W52/04

CPC分类号： H04W52/40 ,  H04B7/024 ,  H04W52/143 ,  H04W52/241

摘要： A method for allocating downlink transmission power of coordinated transmission devices in coordinated multi-point transmission system includes the coordinated transmission devices receiving feedback of channel state information of sub-channels occupied by a terminal from the terminal. The channel state information includes channel phase information and channel amplitude information. Each of the coordinated transmission devices adjusts phases of their sending signals over its sub-channels respectively so as to make phase difference of the sending signals, which are received by the terminal from the coordinated transmission devices via a same sub-channel, to be minimal. Each of the coordinated transmission devices determines its power allocation proportions for the sub-channels on the basis of feedback of channel amplitude information from the terminal and the adjusted phases of the sending signals. By adapting coordinate Iterative Water filling Power Allocation Algorithm with low complexity, the capacity of the system is increased.

摘要翻译： 在协调多点传输系统中分配协同传输设备的下行传输功率的方法包括：从终端接收终端占用的子信道的信道状态信息反馈的协调传输设备。 信道状态信息包括信道相位信息和信道幅度信息。 每个协调传输设备分别通过其子信道调整其发送信号的相位，以便使终端从协同传输设备经由相同子信道接收的发送信号的相位差最小化 。 每个协调传输设备基于来自终端的信道幅度信息的反馈和发送信号的经调整的相位来确定其子信道的功率分配比例。 通过适应复杂度较低的坐标迭代注水功率分配算法，提高了系统的容量。

公开(公告)号：US08369863B2

公开(公告)日：2013-02-05

申请号：US13464339

申请日：2012-05-04

申请人： Xiaodong Xu ,  Ping Zhang ,  Dan Hu ,  Hongjia Li ,  Yi Li ,  Xiaofeng Tao ,  Qimei Cui ,  Sai Wang ,  Qiang Wang

发明人： Xiaodong Xu ,  Ping Zhang ,  Dan Hu ,  Hongjia Li ,  Yi Li ,  Xiaofeng Tao ,  Qimei Cui ,  Sai Wang ,  Qiang Wang

IPC分类号： H04W72/00

CPC分类号： H04W72/082 ,  H04W72/0433 ,  H04W84/045

摘要： An interference suppression method is provided. A method includes the following steps: determining, by a Femtocell, a set of Femtocells which generate interference with said Femtocell based on information measured by and feedbacked from subscribers which are served by said Femtocell, and delivering the cell IDs of all Femtocells in said set to a Femtocell gateway; establishing, by the Femtocell gateway, a relationship graph on interference among Femtocells according to information delivered from the Femtocells, and clustering the Femtocells based on said relationship graph; determining the range influenced by each Femtocell cluster; allocating resources to the Femtocells in each isolated cluster or in the range influenced by each cluster. It may ensure liable communications of Femtocell subscribers as possible, and/or may maximize spectrum efficiency and system capacity of the Femtocell layer as possible.

摘要翻译： 提供了一种干扰抑制方法。 一种方法包括以下步骤：通过毫微微蜂窝基于由所述毫微微蜂窝服务的由用户测量和反馈的信息产生干扰的毫微微小区的集合来确定毫微微小区，并且将所有毫微微小区的小区ID传送到所述组中 到毫微微蜂窝网关; 通过毫微微蜂窝网关，根据从毫微微蜂窝小区传送的信息建立毫微微小区干扰关系图，并根据所述关系图聚类毫微微小区; 确定每个毫微微蜂窝群体影响的范围; 将资源分配给每个孤立集群中的毫微微小区，或者在受每个集群影响的范围内。 它可能确保毫微微蜂窝用户的可靠通信，和/或可能最大限度地提高毫微微蜂窝层的频谱效率和系统容量。

公开(公告)号：US09143972B2

公开(公告)日：2015-09-22

申请号：US13884368

申请日：2011-10-27

申请人： Xiaofeng Tao ,  Xiaodong Xu ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Hongjia Li ,  Qiang Wang ,  Jie Ni

发明人： Xiaofeng Tao ,  Xiaodong Xu ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Hongjia Li ,  Qiang Wang ,  Jie Ni

IPC分类号： H04W72/04 ,  H04W72/00 ,  H04W24/10 ,  H04B7/02 ,  H04B7/06 ,  H04W92/20

CPC分类号： H04W24/10 ,  H04B7/024 ,  H04B7/0626 ,  H04W72/0426 ,  H04W92/20

摘要： Disclosed is a method for establishing a CoMP cooperating set in coordinated multi-point communication, the method comprising the steps of: triggering and starting a coordinated multi-point communication process; according to channel state information of all cells in a measurement cell set measured by a UE, determining a candidate CoMP cooperating set; sending a CoMP cooperating set establishment request to eNodeBs of the cooperating cells in the determined candidate CoMP cooperating set; the eNodeBs being of the cooperating cell and receiving the CoMP cooperating set establishment request responding to the CoMP cooperating set establishment request to the eNodeB of the serving cell of the UE, and sending a CoMP cooperating set establishment response to the eNodeB of the serving cell of the UE; the eNodeB of the serving cell of the UE determining a CoMP cooperating set of the UE according to information of the CoMP cooperating set establishment response; and according to a coordinated multi-point communication mode, sharing data information and service bearer information of the UE of the CoMP cooperating set. The present invention guarantees coordinated multi-point joint transmission/reception, decreases the overhead and complexity of the communication system and furthermore reduces the time delay in the information exchange.

摘要翻译： 公开了一种在协调多点通信中建立CoMP协作集的方法，所述方法包括以下步骤：触发并启动协调的多点通信过程; 根据由UE测量的测量小区集中的所有小区的信道状态信息，确定候选的CoMP协作组; 向确定的候选CoMP协作集中的协作小区的eNodeB发送CoMP协作组建立请求; 所述eNodeB是协作小区，并且将响应于所述CoMP协作组建立请求的所述CoMP协作组建立请求接收到所述UE的所述服务小区的eNodeB，并且向所述服务小区的eNodeB发送CoMP协作集合建立响应 UE; UE的服务小区的eNodeB根据CoMP合作组建立响应的信息确定UE的CoMP协作组; 并且根据协调的多点通信模式，共享CoMP协作组的UE的数据信息和业务承载信息。 本发明保证了协调的多点联合发送/接收，降低了通信系统的开销和复杂性，进而减少了信息交换中的时延。

公开(公告)号：US20130308570A1

公开(公告)日：2013-11-21

申请号：US13896448

申请日：2013-05-17

申请人： Xiaodong Xu ,  Xiaofeng Tao ,  Da Wang ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Dezhuang Wu

发明人： Xiaodong Xu ,  Xiaofeng Tao ,  Da Wang ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Dezhuang Wu

IPC分类号： H04B7/02

CPC分类号： H04B7/024 ,  H04J11/0053 ,  H04W72/04 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/442

摘要： The invention relates to the technical field of wireless communication, and provides a method for joint optimization of schedule and resource allocation based on a genetic algorithm, which is applied in a CoMP communication system. The method includes steps of: S1, encoding chromosome; S2, initializing setting; S3, computing fitness value; S4, determining whether the optimal solution is better than an elite: if yes, updating the elite and executing S5, and if no, turning to S5; S5, determining whether a predetermined generation of population has been generated or not, if no, executing S6, otherwise, turning to S8; S6, participating reproduction process to generate two offspring chromosome individuals; S7, determining whether a predetermined number of offspring chromosome individuals have been generated, if yes, turning to S3 to compute again; otherwise keeping on reproduction; S8, performing schedule and resource allocation according to a solution corresponding to the elite. Under the condition of satisfying schedule limitation and power limitation, the method can, by uniting schedule and resource allocation, efficiently optimize system performance with less computing complexity.

摘要翻译： 本发明涉及无线通信技术领域，并提供了一种基于遗传算法联合优化调度和资源分配的方法，该方法应用于CoMP通信系统中。 该方法包括以下步骤：S1，编码染色体; S2，初始化设置; S3，计算适应度值; S4，确定最优解是否优于精英：如果是，更新精英并执行S5，如果否，转到S5; S5，确定是否已经生成了预定生成的群体，否则执行S6，否则转到S8; S6，参与繁殖过程产生两个后代染色体个体; S7，确定是否已经生成了预定数量的后代染色体个体，如果是，则转向S3再次计算; 否则继续生殖; S8，根据与精英对应的解决方案执行时间表和资源分配。 在满足时间表限制和功率限制的条件下，该方法可以通过计划和资源分配结合，以较少的计算复杂度有效优化系统性能。

公开(公告)号：US20130308571A1

公开(公告)日：2013-11-21

申请号：US13896454

申请日：2013-05-17

申请人： Xiaofeng Tao ,  Ping Zhang ,  Xiaona Li ,  Qimei Cui ,  Xiaodong Xu ,  Yingyue Xu ,  Waheed ur Rehman

发明人： Xiaofeng Tao ,  Ping Zhang ,  Xiaona Li ,  Qimei Cui ,  Xiaodong Xu ,  Yingyue Xu ,  Waheed ur Rehman

IPC分类号： H04W16/02

CPC分类号： H04W16/02 ,  H04W16/12 ,  H04W16/30

摘要： The present invention relates to the technical field of wireless communication, and discloses a method for frequency reuse based on cellular network. The method comprises the following steps: dividing the whole cellular network into a plurality of different cell clusters, wherein each cell cluster comprises three cells, every two of them being adjacent to each other; for each cell in a cell cluster, dividing the cell into a central area and an edge area according to the coverage of the cell; dividing the whole available frequency band of the network according to the user distribution and service distribution in the cell cluster; allocating divided frequency bands to the central area and the edge area in the cell cluster respectively according to preset rule; and applying the method for frequency reuse to other cell clusters, thus achieving the frequency reuse of the whole network. With the method, the average spectrum frequency efficiency of the cellular network can be improved, and interference among cells can be effectively suppressed.

摘要翻译： 本发明涉及无线通信的技术领域，并且公开了一种基于蜂窝网络的频率复用方法。 该方法包括以下步骤：将整个蜂窝网络划分成多个不同的小区簇，其中每个小区簇包括三个小区，每个小区彼此相邻; 对于小区簇中的每个小区，根据小区的覆盖范围将小区划分成中心区域和边缘区域; 根据用户分布和服务分布对网络的整个可用频带进行划分; 根据预设规则分别将细分簇的频带分配给小区簇中的中心区域和边缘区域; 并将频率重用方法应用于其他小区集群，从而实现整个网络的频率重用。 利用该方法，可以提高蜂窝网络的平均频谱频率效率，并且可以有效地抑制小区之间的干扰。

公开(公告)号：US20130223272A1

公开(公告)日：2013-08-29

申请号：US13884368

申请日：2011-10-27

申请人： Xiaofeng Tao ,  Xiaodong Xu ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Hongjia Li ,  Qiang Wang ,  Jie Ni

发明人： Xiaofeng Tao ,  Xiaodong Xu ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Hongjia Li ,  Qiang Wang ,  Jie Ni

IPC分类号： H04W24/10

CPC分类号： H04W24/10 ,  H04B7/024 ,  H04B7/0626 ,  H04W72/0426 ,  H04W92/20

摘要： Disclosed is a method for establishing a CoMP cooperating set in coordinated multi-point communication, the method comprising the steps of: triggering and starting a coordinated multi-point communication process; according to channel state information of all cells in a measurement cell set measured by a UE, determining a candidate CoMP cooperating set; sending a CoMP cooperating set establishment request to eNodeBs of the cooperating cells in the determined candidate CoMP cooperating set; the eNodeBs being of the cooperating cell and receiving the CoMP cooperating set establishment request responding to the CoMP cooperating set establishment request to the eNodeB of the serving cell of the UE, and sending a CoMP cooperating set establishment response to the eNodeB of the serving cell of the UE; the eNodeB of the serving cell of the UE determining a CoMP cooperating set of the UE according to information of the CoMP cooperating set establishment response; and according to a coordinated multi-point communication mode, sharing data information and service bearer information of the UE of the CoMP cooperating set. The present invention guarantees coordinated multi-point joint transmission/reception, decreases the overhead and complexity of the communication system and furthermore reduces the time delay in the information exchange.

摘要翻译： 公开了一种在协调多点通信中建立CoMP协作集的方法，所述方法包括以下步骤：触发并启动协调的多点通信过程; 根据由UE测量的测量小区集中的所有小区的信道状态信息，确定候选的CoMP协作组; 向确定的候选CoMP协作集中的协作小区的eNodeB发送CoMP协作组建立请求; 所述eNodeB是协作小区，并且将响应于所述CoMP协作组建立请求的所述CoMP协作组建立请求接收到所述UE的所述服务小区的eNodeB，并且向所述服务小区的eNodeB发送CoMP协作集合建立响应 UE; UE的服务小区的eNodeB根据CoMP合作组建立响应的信息确定UE的CoMP协作组; 并且根据协调的多点通信模式，共享CoMP协作组的UE的数据信息和业务承载信息。 本发明保证了协调的多点联合发送/接收，降低了通信系统的开销和复杂性，进而减少了信息交换中的时延。

公开(公告)号：US08520616B2

公开(公告)日：2013-08-27

申请号：US12860537

申请日：2010-08-20

申请人： Qimei Cui ,  Shiyuan Li ,  Xiaofeng Tao ,  Chao Wang ,  Xianjun Yang

发明人： Qimei Cui ,  Shiyuan Li ,  Xiaofeng Tao ,  Chao Wang ,  Xianjun Yang

IPC分类号： H04W4/00

CPC分类号： H04B7/0452 ,  H04L5/0035

摘要： A method of pairing users for an uplink multi-user multiple-input-multiple-output (MU-MIMO) system under coordinated multipoint transmission (CoMP) scenario in a communication system, which includes: selecting, by a first cell of the communication system, at least one initial user served by the cell as a first paired user; selecting, by the first cell, a candidate paired user according to the service type of the first paired user; and determining, from the different service types of the first paired user and the candidate paired user, a pairing type to be formed, and determining whether the candidate paired user and the first paired user can be paired into the pairing type to be formed by using a predetermined determination criterion according to the pairing type. It is further provided a device for performing the method. The throughput and communication efficiency of the communication system can be improved with the method and device for pairing users.

摘要翻译： 一种在通信系统中的协调多点传输（CoMP）场景下，用于上行链路多用户多输入多输出（MU-MIMO）系统的用户配对的方法，包括：由通信系统的第一小区 ，由所述小区服务的至少一个初始用户作为第一配对用户; 根据第一配对用户的服务类型，由第一小区选择候选配对用户; 以及从所述第一配对用户和所述候选配对用户的不同服务类型确定要形成的配对类型，并且确定所述候选配对用户和所述第一配对用户是否可以配对成通过使用将形成的配对类型 根据配对类型的预定确定标准。 还提供了一种用于执行该方法的装置。 通过配对用户的方法和设备可以提高通信系统的吞吐量和通信效率。

公开(公告)号：US20130201862A1

公开(公告)日：2013-08-08

申请号：US13878581

申请日：2011-10-21

申请人： Qimei Cui ,  Shiyuan Li ,  Xiaofeng Tao ,  Chao Wang

发明人： Qimei Cui ,  Shiyuan Li ,  Xiaofeng Tao ,  Chao Wang

IPC分类号： H04B7/04

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0689 ,  H04L1/0026 ,  H04L1/20

摘要： A method and device for feeding back downlink channel feedback information, and a method and device for user pairing. The method for feeding back downlink channel feedback information includes: calculating the multi-user channel quality indication error of a user, which error is used to reflect the difference in channel quality indication between the situation of multi-user multiple input multiple output transmission and the situation of single user multiple input multiple output transmission; adding the multi-user channel quality indication error into the downlink channel feedback information which includes a pre-coding matrix indication and a channel quality indication, and feeding the same back to a base station for scheduling. Therefore, the bit error rate of demodulation in the MIMO system can be reduced and the system performance can be improved.

摘要翻译： 用于反馈下行链路信道反馈信息的方法和装置，以及用于用户配对的方法和装置。 反馈下行链路信道反馈信息的方法包括：计算用户的多用户信道质量指示误差，该误差用于反映多用户多输入多输出传输情况与信道质量指示之间的差异， 单用户多输入多输出情况; 将多用户信道质量指示误差添加到包括预编码矩阵指示和信道质量指示的下行链路信道反馈信息中，并将其馈送到基站进行调度。 因此，可以降低MIMO系统中的解调误码率，提高系统性能。

公开(公告)号：US10743263B2

公开(公告)日：2020-08-11

申请号：US16066224

申请日：2017-01-24

申请人： SONY CORPORATION ,  Qimei Cui ,  Haowei Wang ,  Xiaofeng Tao ,  Bingshan Hu

发明人： Qimei Cui ,  Haowei Wang ,  Xiaofeng Tao ,  Bingshan Hu

IPC分类号： H04W52/36 ,  H04W72/14 ,  H04W72/12 ,  H04W24/10 ,  H04W52/38 ,  H04W52/14 ,  H04W16/14

摘要： A wireless communication system, an apparatus, and a method in a wireless communication system. The apparatus includes a processing circuit. The processing circuit is configured to: detect whether a pre-set power margin reporting trigger event is satisfied; and trigger, if the pre-set power margin reporting trigger event is satisfied, reporting of a power margin of a user equipment to a base station, wherein the pre-set power margin reporting trigger event includes at least one of the following events: a first event of having detected an idle channel on an unlicensed band; and a second event of having received uplink scheduling licensed signalling from the base station. A power margin in an LAA system can be effectively reported.