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1. 发明申请

WO2019017002A1 SOUNDING REFERENCE SIGNALS (SRS) IN NEW RADIO (NR) COMMUNICATION SYSTEMS 审中-公开
公开(公告)号：WO2019017002A1
公开(公告)日：2019-01-24
申请号：PCT/JP2018/009362
申请日：2018-03-02
申请人： NEC CORPORATION
发明人： MARUTA, Yasushi , PHAM, Duong
IPC分类号： H04J13/00 , H04J13/10 , H04L5/00 , H04L27/26
摘要： A New Radio (NR) system and a method for transmitting sounding reference signals in a new radio communications system is provided that enables mutual orthogonality to be maintained between SRS resources of different UEs. The system an eNodeB and a plurality of UEs, and the method includes: generating, at a UE, a base sequence based upon a sequence number received from the eNodeB; generating a plurality of blocks from the base sequence by applying cyclic-shifts to the base sequence; and generating a sounding reference signal by concatenating the cyclically shifted blocks. The sounding reference signal is then transmitted to the eNodeB. By using the same Zadoff-Chu base sequence with different cyclic shifts among overlapped UEs, mutual orthogonality of the SRS of each UE is maintained.

2. 发明申请

WO2016098369A1 METHOD AND SYSTEM FOR MIMO COMMUNICATION 审中-公开
标题翻译： MIMO通信的方法和系统
公开(公告)号：WO2016098369A1
公开(公告)日：2016-06-23
申请号：PCT/JP2015/063839
申请日：2015-05-01
申请人： NEC CORPORATION
发明人： PHAM, Duong , MARUTA, Yasushi
IPC分类号： H04J99/00 , H04B7/04
CPC分类号： H04B7/0486 , H04B7/0417 , H04B7/0426 , H04B7/0626 , H04B7/0632 , H04B7/0639 , H04L5/14 , H04L25/0248
摘要： A MIMO system (100) and a method of generating a precoder for use in a MIMO system (100), when communicating with a UE (115), are provided. The method comprises receiving, from the UE (115), channel information relating to a channel on which data is transmitted; decomposing the channel information into components representing a transmission component and a signal strength component; and generating the precoder according to the transmission component and the signal strength component.
摘要翻译：提供MIMO系统（100）和当与UE（115）通信时，生成用于MIMO系统（100）的预编码器的方法。该方法包括从UE（115）接收与发送数据的信道有关的信道信息; 将信道信息分解成表示传输组件和信号强度分量的组件; 并根据传输组件和信号强度分量生成预编码器。

3. 发明申请

WO2015020232A1 GENERATING PRECODERS FOR JOINT TRANSMISSION FROM MULTIPLE TRANSMISSION POINTS TO MULTIPLE USER EQUIPMENTS IN A DOWNLINK COORDINATED MULTIPOINT TRANSMISSION/RECEPTION COMMUNICATIONS SYSTEM 审中-公开
标题翻译：用于从多个传输点到多个用户设备的联合传输的预编码器在下行链路协调的多点传输/接收通信系统
公开(公告)号：WO2015020232A1
公开(公告)日：2015-02-12
申请号：PCT/JP2014/071349
申请日：2014-08-05
申请人： NEC CORPORATION
发明人： PHAM, Duong , MARUTA, Yasushi
IPC分类号： H04W28/16 , H04W16/28
CPC分类号： H04B7/024 , H04B7/0626 , H04B7/0639 , H04L5/0035
摘要： There is provided generating precoders for joint transmission (JT) in a downlink coordinated multi-point transmission/reception (DL CoMP) wireless communications system. The system includes a plurality of transmission points (TPs) operable to communicate with a plurality of user equipments (UEs). Each UE has one of the TPs as its serving TP. The method includes transmitting channel state information (CSI) from each UE to its serving TP, wherein the transmitted CSI includes precoder matrix indicators (PMI), and using the PMI to generate precoders for transmission of data from the plurality of TPs to the plurality of UEs.
摘要翻译：在下行链路协调多点发射/接收（DL CoMP）无线通信系统中提供了用于联合传输（JT）的生成预编码器。该系统包括可操作以与多个用户设备（UE）通信的多个传输点（TP）。每个UE具有其中一个TP作为其服务TP。该方法包括从每个UE向其服务TP发送信道状态信息（CSI），其中传输的CSI包括预编码器矩阵指示符（PMI），并且使用PMI来生成用于从多个TP传输数据到多个 UE的。

4. 发明申请

WO2013118567A1 COMMUNICATION SYSTEM 审中-公开
标题翻译：通讯系统
公开(公告)号：WO2013118567A1
公开(公告)日：2013-08-15
申请号：PCT/JP2013/051018
申请日：2013-01-15
申请人： NEC CORPORATION , LIANG, Caroline , AWAD, Yassin Aden , MARUTA, Yasushi
发明人： LIANG, Caroline , AWAD, Yassin Aden , MARUTA, Yasushi
IPC分类号： H04W52/14 , H04W52/24 , H04W72/04 , H04W24/10
CPC分类号： H04W52/245 , H04L1/0026 , H04W24/10 , H04W52/16 , H04W52/241 , H04W52/244 , H04W52/38
摘要： A communication system is disclosed in which a mobile communication device communicates with communication apparatus of the communication system using radio frames that comprise a plurality of sub-frames. The mobile communication device receives information for use in identifying a first power ratio, said first power ratio representing a ratio of a power used by the communication apparatus for transmitting a reference signal to a first power used for transmitting data in a first sub-frame of a radio frame. The mobile communication device receives information for use in identifying and a second power ratio, the second power ratio representing a ratio of a power used by the communication apparatus for transmitting a reference signal to a second power used for transmitting data in a second sub-frame of said radio frame. The mobile communication device generates a measurement report comprising information calculated in dependence on at least one of the first and second power ratio.
摘要翻译：公开了一种通信系统，其中移动通信设备使用包括多个子帧的无线电帧与通信系统的通信设备进行通信。所述移动通信设备接收用于识别第一功率比的信息，所述第一功率比表示所述通信设备用于发送参考信号的功率与用于在第一子帧中发送数据的第一功率的比率无线电框架。移动通信设备接收用于识别和第二功率比的信息，第二功率比表示由用于发送参考信号的通信设备使用的功率与用于在第二子帧中发送数据的第二功率的比率的无线电帧。移动通信设备生成包括根据第一和第二功率比中的至少一个计算的信息的测量报告。

5. 发明申请

WO2015194230A1 COMPUTING PMIs, PARTICULARLY IN WIRELESS COMMUNICATIONS SYSTEMS HAVING A THREE-DIMENSIONAL COMMUNICATIONS CHANNEL 审中-公开
标题翻译：计算PMI，特别是在具有三维通信频道的无线通信系统中
公开(公告)号：WO2015194230A1
公开(公告)日：2015-12-23
申请号：PCT/JP2015/059284
申请日：2015-03-19
申请人： NEC CORPORATION
发明人： PHAM, Duong , MARUTA, Yasushi
IPC分类号： H04J99/00
CPC分类号： H04B7/046 , H01Q21/061 , H04B7/0452 , H04B7/0473 , H04B7/0626 , H04B7/063 , H04B7/0632 , H04B7/0691
摘要： A method for computing precoder matrix indicators (PMIs) in a wireless communication system is disclosed. The wireless communication system includes a base station (eNB) which is operable to communicate with one or more user equipments (UEs), and a set of transmit antennas associated with the eNB that have been partitioned into multiple antenna subsets. The UE(s) are operable to compute and report multiple PMIs for the said multiple antenna subsets to the eNB for the eNB to use in precoding. The method comprises computing a PMI for a given antenna subset using other already-computed PMI(s) for other(s) of the antenna subsets, such that the PMIs reported by the UE to the eNB account for correlation between the antenna subsets.
摘要翻译：公开了一种在无线通信系统中计算预编码器矩阵指示符（PMI）的方法。无线通信系统包括可操作以与一个或多个用户设备（UE）进行通信的基站（eNB）以及已经被划分为多个天线子集的与eNB相关联的一组发射天线。所述UE可操作以计算并报告所述多个天线子集的多个PMI到eNB，以使eNB用于预编码。该方法包括使用用于其他天线子集的其它已经计算的PMI来计算给定天线子集的PMI，使得UE向eNB报告的PMI考虑天线子集之间的相关性。

6. 发明申请

WO2015194228A1 METHOD AND SYSTEM FOR MU-MIMO COMMUNICATION 审中-公开
标题翻译： MU-MIMO通信的方法和系统
公开(公告)号：WO2015194228A1
公开(公告)日：2015-12-23
申请号：PCT/JP2015/059282
申请日：2015-03-19
申请人： NEC CORPORATION
发明人： PHAM, Duong , MARUTA, Yasushi
IPC分类号： H04J99/00 , H04B7/02
CPC分类号： H04B7/0639 , H04B7/0452 , H04B7/0478 , H04B7/0486 , H04B7/0626 , H04W88/02 , H04W88/08
摘要： A method and system for data communication in a Multiple-Input and Multiple-Output (MIMO) system is provided. The method includes receiving, from a first UE, first channel information relating to a first subset of a plurality of antennae of the MIMO system and second channel information relating to a second subset of a plurality of antennae. The method further includes generating first and second sub-precoders according to the first and second channel information, respectively. A precoder is then generated according at least in part to the first sub-precoder and the second sub-precoder, and data is transmitted to the first UE using the precoder.
摘要翻译：提供了一种用于多输入多输出（MIMO）系统中数据通信的方法和系统。该方法包括从第一UE接收与MIMO系统的多个天线的第一子集有关的第一信道信息和与多个天线的第二子集相关的第二信道信息。该方法还包括分别根据第一和第二信道信息生成第一和第二子预编码器。然后至少部分地根据第一子预编码器和第二子预编码器生成预编码器，并且使用预编码器将数据发送到第一UE。

7. 发明申请

WO2011087136A1 RELAY COMMUNICATION SYSTEM 审中-公开
标题翻译：继电器通讯系统
公开(公告)号：WO2011087136A1
公开(公告)日：2011-07-21
申请号：PCT/JP2011/050789
申请日：2011-01-12
申请人： NEC Corporation , AWAD, Yassin Aden , MARUTA, Yasushi
发明人： AWAD, Yassin Aden , MARUTA, Yasushi
IPC分类号： H04B7/12
CPC分类号： H04B7/15528 , H04B7/12
摘要： A relay communications system is described in which a base station is able to support both Frequency diversity R-PDCCH transmission and Frequency selective R-PDCCH transmission either within different cells, or within the same cell but not the same sub-frame or within the same cell and within the same sub-frame.
摘要翻译：描述了一种中继通信系统，其中基站能够支持不同小区内的频率分集R-PDCCH传输和频率选择性R-PDCCH传输，或者在相同的小区内但不是相同的子帧或相同的子帧并在同一子帧内。

8. 发明申请

WO2015194229A1 COMPUTING PMIs, PARTICULARLY IN WIRELESS COMMUNICATIONS SYSTEMS HAVING THREE-DIMENSIONAL COMMUNICATIONS CHANNELS, USING A REFERENCE ANTENNA OR A REFERENCE ANTENNA SUBSET 审中-公开
标题翻译：计算PMI，特别是在具有三维通信信道的无线通信系统中，使用参考天线或参考天线SUBSET
公开(公告)号：WO2015194229A1
公开(公告)日：2015-12-23
申请号：PCT/JP2015/059283
申请日：2015-03-19
申请人： NEC CORPORATION
发明人： PHAM, Duong , MARUTA, Yasushi
IPC分类号： H04J99/00
CPC分类号： H04B7/0478 , H04B7/0452 , H04B7/0626 , H04B7/063 , H04B7/0632 , H04B7/0691
摘要： A method for computing PMIs in a wireless communication system is disclosed. The system includes an eNB which is operable to communicate with one or UEs and a set of multiple transmit antennas associated with the eNB. The antennas are partitioned into multiple antenna subsets. In a first form of the method, one of the antennas is designated as a reference antenna and the reference antenna forms part of each antenna subset. In a second form of the method, one of the subsets is designated as a reference subset. The UE(s) are operable to compute multiple PMIs for the respective multiple subsets and to report the multiple PMIs to the eNB for the eNB to use in precoding. The first form involves computing a PMI for a given antenna subset independently of the PMIs of any of the other antenna subsets. The second form involves computing a PMI for a given subset based on or using the PMI for the reference subset.
摘要翻译：公开了一种在无线通信系统中计算PMI的方法。该系统包括可操作以与一个或多个UE进行通信的eNB以及与eNB相关联的一组多个发射天线。天线被划分成多个天线子集。在该方法的第一形式中，天线之一被指定为参考天线，并且参考天线形成每个天线子集的一部分。在该方法的第二种形式中，其中一个子集被指定为参考子集。 UE可操作用于计算相应多个子集的多个PMI，并将多个PMI报告给eNB以供eNB在预编码中使用。第一种形式涉及与任何其他天线子集的PMI独立地计算给定天线子集的PMI。第二种形式涉及基于或使用参考子集的PMI计算给定子集的PMI。

9. 发明申请

WO2015194227A1 METHOD AND SYSTEM FOR MU-MIMO COMMUNICATION 审中-公开
标题翻译： MU-MIMO通信的方法和系统
公开(公告)号：WO2015194227A1
公开(公告)日：2015-12-23
申请号：PCT/JP2015/059281
申请日：2015-03-19
申请人： NEC CORPORATION
发明人： PHAM, Duong , MARUTA, Yasushi
IPC分类号： H04J99/00 , H04B7/02
CPC分类号： H04B7/0452 , H04B7/0478 , H04B7/0639 , H04W88/02
摘要： A method and system for data communication in a Multi-user Multiple-Input and Multiple-Output (MU-MIMO) system is provided. The method includes receiving, from a first UE of the plurality of UEs, first and second channel information relating to first and second subsets of antennae; generating first and second sub-precoders according to the first and second channel information; generating a precoder according at least in part to the first and second sub-precoders; and transmitting data to the first UE using the precoder.
摘要翻译：提供了一种用于多用户多输入多输出（MU-MIMO）系统中数据通信的方法和系统。该方法包括从多个UE的第一UE接收与天线的第一和第二子集有关的第一和第二信道信息; 根据第一和第二信道信息产生第一和第二子预编码器; 至少部分地根据第一和第二子编码器产生预编码器; 以及使用所述预编码器向所述第一UE发送数据。

10. 发明申请

WO2014046273A1 METHOD FOR IMPROVING TRANSMISSION CAPACITY IN A DL MU-MIMO COMMUNICATIONS SYSTEM 审中-公开
标题翻译：用于改善DL MU-MIMO通信系统中传输容量的方法
公开(公告)号：WO2014046273A1
公开(公告)日：2014-03-27
申请号：PCT/JP2013/075604
申请日：2013-09-13
申请人： NEC CORPORATION
发明人： MARUTA, Yasushi , PHAM, Duong , GURUNG, Arun
IPC分类号： H04W16/28 , H04W4/12 , H04W72/12
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0452 , H04B7/0482 , H04B7/0486 , H04B7/0632 , H04B7/0639 , H04B7/065 , H04B7/0689 , H04B15/00 , H04L25/03343 , H04L25/03891
摘要： A method according to the present invention is for selecting User Equipment (UE) for scheduling/precoding within the coverage area of a communications node having a predefined codebook. The method includes: receiving at the communications node feedback information from each of the UEs within the coverage area of the communications node wherein the feedback information includes at least one precoder matrix indicator (PMI); generating at the communications node a precoder matrix based on the reported precoder matrix indicator from each UE; determining at the communications node correlation values for each UE in the coverage utilising the precoder matrix; identifying a pair of UEs having minimum correlation values; and selecting the identified UEs for scheduling/precoding if the minimum correlation value is less than or equal to a threshold value.
摘要翻译：根据本发明的方法是用于在具有预定码本的通信节点的覆盖区域内选择用于调度/预编码的用户设备（UE）。该方法包括：在通信节点处接收来自通信节点的覆盖区域内的每个UE的反馈信息，其中反馈信息包括至少一个预编码器矩阵指示符（PMI）; 在所述通信节点处根据来自每个UE的报告的预编码器矩阵指示符在所述通信节点处生成预编码器矩阵; 在所述通信节点处，使用所述预编码器矩阵来确定所述覆盖中的每个UE的相关值; 识别具有最小相关值的一对UE; 以及如果最小相关值小于或等于阈值，则选择所识别的UE进行调度/预编码。

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