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    • 21. 发明申请
    • Method, apparatus and computer program for permutation and subchannelization
    • 用于排列和子信道化的方法,装置和计算机程序
    • US20090257382A1
    • 2009-10-15
    • US12383704
    • 2009-03-26
    • Xin QiChao WeiShaohua Li
    • Xin QiChao WeiShaohua Li
    • H04W72/04
    • H04L5/0094H04L5/0007H04L5/0037
    • M physical resource blocks PRBs are allocated for localized resource allocation LRA and N-M PRBs are allocated for distributed resource allocation DRA. Each PRB has U subcarriers. Subcarriers of the N PRBs are permuted to result in N subchannels. Serially for each mth one of the M PRBs allocated for LRA, the subcarriers for an mth one of the M PRBs allocated for LRA are punctured from the permuted subchannels. After puncturing, subcarriers of one of the subchannels are filled with subcarriers of all other subchannels which were punctured in the mth one of the M PRBs. The result after puncturing and filling for all M PRBs allocated for LRA is N-M PRBs each having U subcarriers and M PRBs each having U subcarriers. Then there is a wireless communication using at least one of a LRA on the resulting M PRBs or a DRA on the resulting N-M PRBs.
    • M个物理资源块PRB被分配用于本地化的资源分配LRA,并且N-M PRB被分配用于分布式资源分配DRA。 每个PRB都有U个子载波。 N个PRB的子载波被置换以产生N个子信道。 对于分配给LRA的M个PRB中的每个第m个系统,针对LRA分配的M个PRB中的第m个子载波从经排列的子信道进行穿孔。 在删截之后,一个子信道的副载波被填充在M个PRB中的第m个之一中被穿孔的所有其他子信道的子载波。 针对分配给LRA的所有M个PRB的穿孔和填充之后的结果是每个具有U个子载波的N-M个PRB和每个具有U个子载波的M个PRB。 然后,使用所产生的M个PRB上的LRA中的至少一个或所得到的N-M PRB上的DRA进行无线通信。
    • 22. 发明授权
    • Methods and radio network nodes for measuring interference
    • 用于测量干扰的方法和无线电网络节点
    • US09584272B2
    • 2017-02-28
    • US13817665
    • 2012-11-26
    • Shaohua LiZhiheng GuoJinhua LiuXinghua SongZhan Zhang
    • Shaohua LiZhiheng GuoJinhua LiuXinghua SongZhan Zhang
    • H04L5/00H04W24/08H04W52/24H04B17/345H04W72/04H04W52/14
    • H04B17/345H04L5/0032H04W24/08H04W52/143H04W52/241H04W52/243H04W72/0446
    • A first radio network node (110) and a method therein for measuring interference as well as a second radio network node (120) and a method therein for enabling the first radio network node to measure interference are disclosed. The first radio network node (110) obtains (201) configuration information for indicating a designated subframe in which a reference signal for measurement of the interference is to be transmitted by the second radio network node (120). The second radio network node (120) obtains (202) configuration information for configuring a designed subframe for transmission of a reference signal. The first radio network node (110) receives (205), in the designated subframe indicated by the configuration information, the reference signal transmitted by the second radio network node (120). The first radio network node (110) determines (206) a value of the interference based on the reference signal.
    • 公开了一种用于测量干扰的第一无线电网络节点(110)及其中的方法以及第二无线电网络节点(120)及其中的方法,使第一无线电网络节点能够测量干扰。 第一无线网络节点(110)获取(201)用于指示由第二无线电网络节点(120)发送用于测量干扰的参考信号的指定子帧的配置信息。 第二无线电网络节点(120)获得用于配置用于发送参考信号的设计子帧的配置信息(202)。 第一无线电网络节点(110)在由配置信息指示的指定子帧中接收由第二无线电网络节点(120)发送的参考信号(205)。 第一无线电网络节点(110)基于参考信号确定(206)干扰的值。
    • 23. 发明授权
    • Frequency synchronization method for nodes in a downlink coordinated multiple point transmission scenario
    • 下行协调多点传输场景中节点的频率同步方法
    • US09392563B2
    • 2016-07-12
    • US14372680
    • 2012-07-16
    • Zhiheng GuoShaohua LiJinhua LiuZhan Zhang
    • Zhiheng GuoShaohua LiJinhua LiuZhan Zhang
    • H04J3/06H04W56/00H04L5/00H04J1/06
    • H04W56/0015H04J1/06H04J3/0617H04L5/0035H04W56/0035
    • Techniques are disclosed for synchronizing frequency among a cluster of coordinated transmission points cooperating in a coherent joint transmission. In some embodiments, one transmission point is set (510) as a reference transmission point for a group of coordinated transmission points. Each of one or more other transmission points in the group receives (530) a specified downlink reference signal from the reference transmission point, measures (540) its frequency offset relative to the reference point, and compensates (550) the frequency offset in baseband processing or by a radio adjustment. Which transmission point acts as the reference transmission point is statically defined, in some embodiments, or dynamically configured, in others. Likewise, which time-frequency resources are used for the reference signal may be statically defined or dynamically configured. In some embodiments, information identifying the reference transmission point and/or specifying the radio resource locations and durations of the reference signal is distributed to the synchronizing transmission points.
    • 公开了用于在协调传输点协作的一组协调传输点中使频率同步的技术。 在一些实施例中,将一个传输点设置为(510)作为一组协调传输点的参考传输点。 组中的一个或多个其他传输点中的每一个从参考传输点接收(530)指定的下行链路参考信号,测量(540)相对于参考点的频率偏移,并补偿(550)基带处理中的频率偏移 或通过无线电调整。 作为参考传送点的哪个传输点在一些实施例中被静态地定义,或者在另一些实施例中被动态配置。 同样地,用于参考信号的哪些时间频率资源可以被静态地定义或动态配置。 在一些实施例中,识别参考传输点和/或指定参考信号的无线电资源位置和持续时间的信息被分配给同步传输点。
    • 25. 发明授权
    • Base station, user equipment, and methods therein in a communications system
    • 通信系统中的基站,用户设备和方法
    • US08953475B2
    • 2015-02-10
    • US13496445
    • 2012-01-30
    • Shaohua LiYang HuJianfeng Wang
    • Shaohua LiYang HuJianfeng Wang
    • H04L12/26
    • H04L5/0053H04B7/0626H04J11/0023H04L25/0228H04W24/08H04W52/241H04W52/245
    • A method in a first base station for obtaining channel state information from a user equipment is provided. The first base station is comprised in a wireless communication system. The wireless communication system further comprises the user equipment. The first base station estimates (403) a first offset value for a first set of subframes based on a first channel information. The first base station further estimates (404) a second offset value for a second set of subframes based on a second channel information. The first base station transmits (405) the estimated first offset value and the estimated second offset value to the user equipment. The first base station then obtains (407) channel state information from the user equipment. The channel state information is based on the transmitted estimated first offset value and the estimated second offset value. The channel state information is to be used for transmission in the first base station.
    • 提供了一种用于从用户设备获取信道状态信息的第一基站中的方法。 第一基站包括在无线通信系统中。 无线通信系统还包括用户设备。 第一基站基于第一信道信息估计(403)第一组子帧的第一偏移值。 基于第二信道信息,第一基站进一步估计(404)第二组子帧的第二偏移值。 第一基站向用户设备发送(405)估计的第一偏移值和估计的第二偏移值。 第一基站然后从用户设备获得(407)信道状态信息。 信道状态信息基于发送的估计的第一偏移值和估计的第二偏移值。 信道状态信息用于第一基站中的传输。
    • 26. 发明授权
    • Mapping resource blocks into subchannels
    • 将资源块映射到子信道
    • US08111609B2
    • 2012-02-07
    • US12428440
    • 2009-04-22
    • Chao WeiXin QiShaohua Li
    • Chao WeiXin QiShaohua Li
    • H04W72/04
    • H04L5/0044H04W72/0406
    • According to an example embodiment, a method may include determining, by a first wireless node in a wireless network, a number N of resource blocks available for transmitting data within a cell, the N resource blocks each including V resource block orthogonal frequency division multiplexing (OFDM) symbols, the V resource block OFDM symbols each including U resource block subcarriers. The method may also include mapping the N resource blocks into N subchannels based on a permutation formula, the permutation formula assigning, based on permutation parameters including the number N and a random or pseudorandom variable, U subchannel subcarriers for each of V subchannel OFDM symbols to each of the N subchannels and thereby allocating a subchannel index for each of the N subchannels. The method may also include sending a message to a second wireless node indicating the permutation parameters and the allocated subchannel index of at least one of the N subchannels for communication between the first wireless node and the second wireless node.
    • 根据示例实施例,一种方法可以包括由无线网络中的第一无线节点确定可用于在小区内发送数据的资源块数量N,每个包括V个资源块正交频分复用的N个资源块( OFDM)符号,每个包括U个资源块子载波的V个资源块OFDM符号。 该方法还可以包括基于排列公式将N个资源块映射到N个子信道中,该排列公式基于包括数目N和随机或伪随机变量的排列参数分配V个子信道OFDM符号中的每一个的子信道子载波 N个子信道中的每一个,从而为N个子信道中的每一个分配子信道索引。 该方法还可以包括向第二无线节点发送指示第一无线节点和第二无线节点之间的通信的N个子信道中的至少一个的置换参数和所分配的子信道索引的消息。