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1. 发明授权

US09942931B2 Beamforming 有权
公开(公告)号：US09942931B2
公开(公告)日：2018-04-10
申请号：US14908980
申请日：2014-02-24
申请人： FUJITSU LIMITED
发明人： Chenxi Zhu , Akira Ito
IPC分类号： H04W76/02 , H04W8/00 , H04B7/0456 , H04B7/06 , H04W4/00 , H04W24/02 , H04W74/00 , H04W28/04 , H04W52/24 , H04W72/04 , H04W8/18 , H04W56/00 , H04W72/10
CPC分类号： H04W8/005 , H04B7/0456 , H04B7/0617 , H04B7/0639 , H04W4/70 , H04W8/186 , H04W24/02 , H04W28/04 , H04W52/241 , H04W52/242 , H04W52/243 , H04W56/001 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W72/0473 , H04W72/10 , H04W74/006 , H04W76/14
摘要： A method of beamforming a transmission from an antenna array having rows of antenna elements and columns of antenna elements may include determining a first precoding matrix associated with a first orientation. The method may further include determining a second precoding matrix associated with a second orientation. The method may further include transmitting a transmission having beamforming based at least in part on the first precoding matrix and based at least in part on the second precoding matrix.

2. 发明授权

US09232460B2 Network supervised wireless device neighbor discovery 有权
标题翻译：网络监督无线设备邻居发现
公开(公告)号：US09232460B2
公开(公告)日：2016-01-05
申请号：US13828457
申请日：2013-03-14
申请人： FUJITSU LIMITED
发明人： Chenxi Zhu , Dorin Viorel , Huy Dung Han , Akira Ito
IPC分类号： H04W40/24
CPC分类号： H04W40/246
摘要： A method of discovering neighboring wireless devices may include assigning a discovery channel resource to a transmitting wireless device. The transmitting wireless device may accordingly be configured to transmit a neighbor discovery signal based on the discovery channel resource. The method may further include receiving neighbor discovery signal information associated with the neighbor discovery signal as received by a receiving wireless device that may be configured to receive the neighbor discovery signal. Additionally, the method may include directing the transmitting wireless device and the receiving wireless device to participate in device-to-device communication with each other based on the neighbor discovery signal information.
摘要翻译：发现相邻无线设备的方法可以包括向发射无线设备分配发现信道资源。相应地，发射无线设备可以被配置为基于发现信道资源发送邻居发现信号。该方法还可以包括接收与接收无线设备接收的邻居发现信号相关联的邻居发现信号信息，接收无线设备可被配置为接收邻居发现信号。另外，该方法可以包括基于邻居发现信号信息指示发射无线设备和接收无线设备相互参与设备到设备之间的通信。

3. 发明授权

US08902742B2 Method and system for optimized access of a physical random access channel 有权
标题翻译：用于物理随机访问信道优化访问的方法和系统
公开(公告)号：US08902742B2
公开(公告)日：2014-12-02
申请号：US13647264
申请日：2012-10-08
申请人： Fujitsu Limited
发明人： Dorin Viorel , Chenxi Zhu , Akira Ito
IPC分类号： H04L12/24 , H04W28/02 , H04W74/08 , H04W74/00
CPC分类号： H04W28/0205 , H04W74/008 , H04W74/0833
摘要： A method for optimized access of a physical random access channel (PRACH) includes sampling a plurality of mapped zones associated with a base station. Each of the mapped zones has a plurality of endpoints. The method further includes determining a subset of disconnected endpoints in the given mapped zone where the disconnected endpoints are disconnected from a wireless network. The method also includes estimating a PRACH load based on the subset of disconnected endpoints. Additionally, based on whether the estimated PRACH load is a pre-determined factor larger than an original PRACH allocation, the method includes increasing the PRACH allocation to accommodate reconnection of the subset of disconnected endpoints in the given mapped zone.
摘要翻译：用于物理随机接入信道（PRACH）的优化访问的方法包括对与基站相关联的多个映射区域进行采样。每个映射区域具有多个端点。该方法还包括确定给定映射区域中断开的端点的子集，其中断开的端点与无线网络断开连接。该方法还包括基于断开的端点的子集来估计PRACH负载。此外，基于估计的PRACH负载是否大于原始PRACH分配的预定因子，该方法包括增加PRACH分配以适应给定映射区中的断开的端点的子集的重新连接。

4. 发明授权

US10433322B2 Base station and wireless device used in wireless communication system 有权
公开(公告)号：US10433322B2
公开(公告)日：2019-10-01
申请号：US15922427
申请日：2018-03-15
申请人： FUJITSU LIMITED
发明人： Hongyang Chen , Michiharu Nakamura , Chenxi Zhu
IPC分类号： H04W72/12 , H04W76/10 , H04W72/04 , H04W76/14 , H04W8/00 , H04W64/00 , H04W4/70 , H04L5/14
摘要： A wireless device is used in a wireless communication system that includes a base station for controlling communication in which a time division duplex frame including at least one uplink subframe and at least one downlink subframe is transmitted. The wireless device includes: a request transmitter that transmits a request for performing D2D (device-to-device) communication to the base station; a receiver that receives position information to indicate a position at which a blank subframe is allocated in the time division duplex frame from the base station; and a scheduler that determines a schedule for D2D communication based on the position information and reports the schedule to a corresponding wireless device. The blank subframe is configured to include a symbol for control signal and a plurality of blank symbols in which no signal is transmitted from the base station.

5. 发明授权

US10117087B2 Terminal clustering 有权
公开(公告)号：US10117087B2
公开(公告)日：2018-10-30
申请号：US14908974
申请日：2014-01-07
申请人： FUJITSU LIMITED
发明人： Chenxi Zhu , Akira Ito
IPC分类号： H04W76/23 , H04W8/00 , H04B7/0456 , H04B7/06 , H04W24/02 , H04W74/00 , H04W52/24 , H04W72/04 , H04W8/18 , H04W56/00 , H04W72/10 , H04W28/04 , H04W4/70 , H04W76/14
摘要： A method includes checking for a first cluster beacon associated with a first cluster. The first cluster is an open cluster. The method further includes transmitting a second cluster beacon associated with a second cluster. Transmitting the second cluster beacon is done in response to failing to receive the first cluster beacon. The method further includes receiving a first request in response to transmitting the second cluster beacon. The first request includes a request by a first terminal to join the second cluster. The method further includes receiving a second request in response to transmitting the second cluster beacon. The second request includes a request by a second terminal to join the second cluster.

6. 发明授权

US09473218B2 Signaling scheme for coordinated transmissions 有权
标题翻译：协调传输信令方案
公开(公告)号：US09473218B2
公开(公告)日：2016-10-18
申请号：US13861130
申请日：2013-04-11
申请人： Fujitsu Limited
发明人： Chenxi Zhu
IPC分类号： H04B7/02 , H04W52/40 , H04L5/00
CPC分类号： H04B7/024 , H04L5/0007 , H04L5/0091 , H04W52/40
摘要： A method of signal transmission in a wireless communications network is disclosed. The method includes identifying a particular transmission point to transmit to a mobile device in a particular transmission and determining whether the particular transmission point will operate at a power level equivalent to that of a serving cell of the mobile device. The method further includes transmitting to the mobile device an identification of the value of a cell-specific parameter associated with the cell of the particular transmission point, if the particular transmission point will not operate at a power level equivalent that of the serving cell. The method still further includes transmitting to the particular transmission point an identification of a value of the cell-specific parameter associated with the serving cell, if the particular transmission point will operate at a power level equivalent to a power level of the serving cell.
摘要翻译：公开了一种在无线通信网络中进行信号传输的方法。该方法包括识别在特定传输中向移动设备发送的特定传输点，以及确定特定传输点是否将以与移动设备的服务小区的功率级别相同的功率级别工作。该方法还包括如果特定传输点将不处于与服务小区的功率级别相同的功率电平，则向移动设备发送与特定传输点的小区相关联的小区特定参数的值的标识。该方法还包括如果特定传输点将在等于服务小区的功率电平的功率电平下工作，则向特定传输点发送与服务小区相关联的小区特定参数的值的标识。

7. 发明授权

US09025550B2 Coordinated multipoint resource management 有权
标题翻译：协调多点资源管理
公开(公告)号：US09025550B2
公开(公告)日：2015-05-05
申请号：US13747251
申请日：2013-01-22
申请人： Fujitsu Limited
发明人： Chenxi Zhu
IPC分类号： H04W72/08 , H04L5/00
CPC分类号： H04W72/085 , H04L5/0035 , H04L5/0048 , H04L5/0091
摘要： A method for resource management includes determining a Coordinated Multi-point Processing (CoMP) resource management set of a user equipment (UE), receiving a set of channel state information reference signals (CSI-RS) at the UE from a transmission point (TP) included within the CoMP resource management set, determining a resource management parameter based upon the CSI-RS signals, and sending the determined resource management parameter to the TP. The CoMP resource management set includes a plurality of candidate TPs for which downlink communication may be established with the UE.
摘要翻译：一种用于资源管理的方法包括：确定用户设备（UE）的协调多点处理（CoMP）资源管理集合，从UE从传输点（TP）接收一组信道状态信息参考信号（CSI-RS））包括在所述CoMP资源管理集合内，基于所述CSI-RS信号来确定资源管理参数，并将确定的资源管理参数发送到所述TP。 CoMP资源管理集合包括可以与UE建立下行链路通信的多个候选TP。

8. 发明授权

US10051454B2 Terminal-to-terminal communication 有权
公开(公告)号：US10051454B2
公开(公告)日：2018-08-14
申请号：US14908858
申请日：2014-01-07
申请人： FUJITSU LIMITED
发明人： Chenxi Zhu , Akira Ito
IPC分类号： H04W72/04 , H04W8/00 , H04B7/0456 , H04B7/06 , H04W24/02 , H04W74/00 , H04W52/24 , H04W8/18 , H04W56/00 , H04W72/10 , H04W28/04 , H04W4/70 , H04W76/14
摘要： A method of enabling terminal-to-terminal communication includes organizing a cluster including a cluster head, a first cluster member, and a second cluster member. The first cluster member includes a first terminal. The second cluster member includes a second terminal. The cluster head is connected to the first cluster member and the second cluster member. The method further includes controlling a unicast communication from the first cluster member to the second cluster member via the cluster head.

9. 发明授权

US09832763B2 Signalling scheme for coordinated transmissions 有权
公开(公告)号：US09832763B2
公开(公告)日：2017-11-28
申请号：US14399865
申请日：2013-03-14
申请人： Fujitsu Limited
发明人： Chenxi Zhu
IPC分类号： H04W4/00 , H04W72/04 , H04B7/024 , H04L5/00 , H04W52/40 , H04W92/10
CPC分类号： H04W72/042 , H04B7/024 , H04L5/0007 , H04L5/0091 , H04W52/40 , H04W72/048 , H04W92/10
摘要： A method of signal transmission in a wireless communications network is disclosed. The method includes identifying a particular set of transmission points that can be utilized to transmit data to a mobile device, constructing an indexed list of the particular set of transmission points, and transmitting the indexed list to the mobile device. The method further includes selecting at least one transmission point from the particular set of transmission points to transmit data to the mobile device in a particular transmission, and transmitting to the mobile device an indicator of the index corresponding to the at least one transmission point.

10. 发明授权

US09801168B2 Wireless communication with co-operating cells 有权
公开(公告)号：US09801168B2
公开(公告)日：2017-10-24
申请号：US13927603
申请日：2013-06-26
申请人： FUJITSU LIMITED
发明人： Timothy Moulsley , Zhaojun Li , Paul Bucknell , Chenxi Zhu
IPC分类号： H04W72/04 , H04B7/024
CPC分类号： H04W72/042 , H04B7/024
摘要： A wireless communication method in which a user equipment receives downlink signals from at least first and second cells, said downlink signals include respective reference signals transmitted from each of the cells; and a channel jointly transmitted by the cells; the user equipment utilizing a joint amplitude and/or phase reference derived from the respective reference signals to demodulate the jointly transmitted channel.

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