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公开(公告)号：US20170374655A1
公开(公告)日：2017-12-28
申请号：US15699959
申请日：2017-09-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu
IPC: H04W72/04 , H04W72/12 , H04L5/00 , H04B7/0452 , H04B7/0456
CPC classification number: H04W72/044 , H04B7/0452 , H04B7/0456 , H04L5/0007 , H04L5/0048 , H04W28/16 , H04W72/042 , H04W72/121 , H04W84/12
Abstract: Embodiments of the present disclosure provide an OFDMA transmission method, an access point (AP), and a station. The method includes: allocating, by an access point AP, a same resource unit (RU) to multiple stations, where the RU includes one or more subcarriers in a frequency domain; and sending, by the AP and on the same RU, downlink data to the multiple stations in a time division multiplexing manner or a code division multiplexing manner, and sending, by the AP and on the same RU, pilot symbols to the multiple stations. In this way, the AP may send, on the same RU, the downlink data and the pilot symbols to the multiple stations within a limited time, thereby improving resource utilization efficiency.
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公开(公告)号：US20170338989A1
公开(公告)日：2017-11-23
申请号：US15674154
申请日：2017-08-10
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H04L27/2621 , H04L5/0053 , H04L27/262 , H04L27/2627 , H04W84/12
Abstract: A peak-to-average ratio reduction method, including dividing subcarriers of an orthogonal frequency division multiplexing (OFDM) symbol that carries to-be-transmitted data to obtain multiple blocks, determining multiple phase factors corresponding to the multiple blocks, where the multiple phase factors reduce a peak-to-average ratio of the OFDM symbol, transmitting the multiple phase factors using a particular subcarrier of the OFDM symbol, multiplying data transmitted on each block in the multiple blocks by a corresponding phase factor, and transmitting data obtained by means of multiplication. Phase factor information of each block is transmitted using the particular subcarrier such that application of a partial transmit sequence (PTS) method in a WI-FI system becomes possible, thereby effectively reducing a peak-to-average power ratio (PAPR) of data.
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公开(公告)号：US09819385B2
公开(公告)日：2017-11-14
申请号：US15337407
申请日：2016-10-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu , Teyan Chen , Hong Cheng
Abstract: A method for interference cancellation is provided. The method includes: determining, by a first base station, a channel parameter from a transmit antenna of a second base station to a receive antenna of the first base station; receiving, by the first base station, a first signal using a first resource, where the first signal includes: a first interference signal and an uplink wanted signal, and the first interference signal is an interference signal generated when a downlink second signal is sent by the second base station by using the first resource; receiving, by the first base station, reconstruction information that is of the second signal and that is sent by the second base station; and determining, by the first base station, the first interference signal in the first signal according to the channel parameter and the reconstruction information of the second signal, and canceling the first interference signal.
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公开(公告)号：US20170195108A1
公开(公告)日：2017-07-06
申请号：US15466145
申请日：2017-03-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu
CPC classification number: H04L5/1461 , H01Q1/2291 , H01Q1/24 , H01Q1/246 , H01Q1/525 , H01Q21/061 , H04B1/525 , H04B7/04
Abstract: An antenna system, including: M transmit antenna pairs, where two transmit antennas of each transmit antenna pair are symmetrically distributed on both sides of a same symmetry axis; N receive antenna pairs, where two receive antennas of each receive antenna pair are symmetrically distributed on both sides of the symmetry axis; M dividing devices, which are one-to-one corresponding to the M transmit antenna pairs, and each dividing device is configured to: divide one transmit signal into two transmit signals and separately send the two transmit signals to a corresponding transmit antenna pair; and N combining devices, which are one-to-one corresponding to the N receive antenna pairs. Each combining device is configured to combine two receive signals received by a corresponding receive antenna pair into one receive signal. One of the dividing device and the combining device is an in-phase dividing device, and the other is an out-of-phase combining device.
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15.发明授权公开(公告)号：US09439190B2
公开(公告)日：2016-09-06
申请号：US14464529
申请日：2014-08-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Rongdao Yu , Sheng Liu
CPC classification number: H04W76/14 , H04B7/2656 , H04W72/02 , H04W72/0413 , H04W72/0446 , H04W72/046 , H04W72/082
Abstract: The present invention provides a D2D communication method and a D2D communication device. The method includes: determining a second time slot for transmitting D2D data according to a first time slot for transmitting D2D signaling to a D2D receiver and a synchronous transmission relationship between the D2D signaling and the D2D data, the second time slot being after the first time slot; determining a third time slot for transmitting uplink control information in cellular communication according to the second time slot, the uplink control information being used for indicating an uplink radio resource in the second time slot, and the third time slot being before the second time slot; demodulating the uplink control information in the third time slot to acquire the uplink radio resource in the second time slot; multiplexing the uplink radio resource in the second time slot to perform D2D communication with the D2D receiver.
Abstract translation: 本发明提供一种D2D通信方法和D2D通信装置。 该方法包括：根据用于向D2D接收机发送D2D信令的第一时隙和D2D信令与D2D数据之间的同步传输关系，确定用于发送D2D数据的第二时隙，第二时隙在第一时间之后 槽 根据第二时隙确定用于在蜂窝通信中发送上行链路控制信息的第三时隙，所述上行链路控制信息用于指示所述第二时隙中的上行链路无线电资源，所述第三时隙在所述第二时隙之前; 解调第三时隙中的上行链路控制信息，以获取第二时隙中的上行链路无线电资源; 在第二时隙中复用上行链路无线电资源以执行与D2D接收机的D2D通信。
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Patent Agency Ranking
公开(公告)号：US09210003B2
公开(公告)日：2015-12-08
申请号：US14290350
申请日：2014-05-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu , Hong Cheng
CPC classification number: H04L25/0228 , H04L25/03968 , H04L27/2601
Abstract: A downlink channel estimation method and system, and a mobile terminal. In the method, a first mobile terminal is located in a central area of a cell, a second mobile terminal is located in an edge area of the cell, and a resource block of the second mobile terminal is adjacent to a resource block of the first mobile terminal, so that the first mobile terminal can use a data signal transmitted from a base station to the second mobile terminal to perform downlink channel estimation, thereby improving the accuracy of the downlink channel estimation, and enhancing the performance of the downlink channel estimation.
Abstract translation: 下行链路信道估计方法和系统，以及移动终端。 在该方法中，第一移动终端位于小区的中央区域，第二移动终端位于小区的边缘区域，第二移动终端的资源块与第一移动终端的资源块相邻， 移动终端，使得第一移动终端可以使用从基站向第二移动终端发送的数据信号来执行下行链路信道估计，从而提高下行链路信道估计的准确性，并提高下行链路信道估计的性能。
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公开(公告)号：US09065503B2
公开(公告)日：2015-06-23
申请号：US13954621
申请日：2013-07-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu
CPC classification number: H04B7/046 , H04B7/0413 , H04B7/0617 , H04B7/0663 , H04B7/086
Abstract: Embodiments of the present invention provide a precoding processing method, a base station, and a communications system. The precoding processing method includes: implementing beamforming on an antenna array according to information about a direction of arrival of a user equipment to obtain a transformation matrix; transforming a channel matrix according to the transformation matrix to obtain an equivalent channel matrix; and obtaining a precoding matrix required for precoding processing according to the equivalent channel matrix. According to the embodiments of the present invention, after a MIMO system is implemented based on a single antenna array, signals transmitted between the UE and the base station are orthogonal in each beam direction, thereby obtaining a degree-of-freedom gain.
Abstract translation: 本发明的实施例提供一种预编码处理方法，基站和通信系统。 预编码处理方法包括：根据关于用户设备的到达方向的信息在天线阵列上实现波束形成以获得转换矩阵; 根据变换矩阵对信道矩阵进行变换，得到等效信道矩阵; 并根据等效信道矩阵获得预编码处理所需的预编码矩阵。 根据本发明的实施例，在基于单个天线阵列实现MIMO系统之后，在UE和基站之间发送的信号在每个波束方向上是正交的，从而获得自由度增益。
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公开(公告)号：US20150055515A1
公开(公告)日：2015-02-26
申请号：US14529502
申请日：2014-10-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hong Cheng , Sheng Liu , Yinggang Du , Rui Wang
CPC classification number: H04L5/0062 , H04L5/0007 , H04L5/0073 , H04L5/14 , H04W72/082
Abstract: The present invention provides a method and an apparatus for handling full-duplex interference. One method includes: obtaining an interference degree that is caused when a site device performs full-duplex transmission with at least two UEs; and determining, according to the interference degree, a UE allowed to transmit uplink and downlink signals on the same time and frequency resource among the at least two UEs. In embodiments of the present invention, a UE allowed to transmit uplink and downlink signals on the same time and frequency resource may be classified according to an interference degree that is caused when a site device performs full-duplex transmission with at least two UEs, thereby preventing the interference problem in the scenario of point-to-multipoint full-duplex communication as much as possible.
Abstract translation: 本发明提供一种处理全双工干扰的方法和装置。 一种方法包括：获取当站点设备与至少两个UE进行全双工传输时引起的干扰程度; 以及根据所述干扰度确定允许在所述至少两个UE中的相同时间和频率资源上发送上行链路和下行链路信号的UE。 在本发明的实施例中，允许在相同时间和频率资源上发送上行链路和下行链路信号的UE可以根据当站点设备与至少两个UE进行全双工传输时引起的干扰程度进行分类，从而 尽可能地防止点对多点全双工通信情况下的干扰问题。
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公开(公告)号：US20130194984A1
公开(公告)日：2013-08-01
申请号：US13622292
申请日：2012-09-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hong Cheng , Sheng Liu , Yinggang Du , Rui Wang
IPC: H04L5/14
CPC classification number: H04L5/0062 , H04L5/0007 , H04L5/0073 , H04L5/14 , H04W72/082
Abstract: The present invention provides a method and an apparatus for handling full-duplex interference. One method includes: obtaining an interference degree that is caused when a site device performs full-duplex transmission with at least two UEs; and determining, according to the interference degree, a UE allowed to transmit uplink and downlink signals on the same time and frequency resource among the at least two UEs. In embodiments of the present invention, a UE allowed to transmit uplink and downlink signals on the same time and frequency resource may be classified according to an interference degree that is caused when a site device performs full-duplex transmission with at least two UEs, thereby preventing the interference problem in the scenario of point-to-multipoint full-duplex communication as much as possible.
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公开(公告)号：US08467818B2
公开(公告)日：2013-06-18
申请号：US13622196
申请日：2012-09-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu , Hong Cheng
IPC: H04W4/00
CPC classification number: H04W88/085 , H04W24/02
Abstract: Embodiments of the present invention provide a communication system and management method thereof. The communication system includes: a radio transceiving layer, including a radio transceiving node combination, where the radio transceiving node combination includes at least one type of the following: a macro cell RRU, a Pico cell RRU, and a Pico cell BRU; a local computing layer, including a local computing node, connected to a radio transceiving node in one or multiple neighboring radio transceiving node combinations and configured to execute all communication processing or a first part of communication processing of a cell corresponding to the local computing node; a centralized computing layer, including a centralized computing node, connected to the local computing node in the local computing layer and configured to execute a second part of communication processing, where the all communication processing includes the first part and second part of communication processing.
Abstract translation: 本发明的实施例提供一种通信系统及其管理方法。 通信系统包括：无线电收发层，包括无线电收发节点组合，其中无线电收发节点组合包括以下的至少一种：宏小区RRU，微微小区RRU和微微小区BRU; 本地计算层，包括本地计算节点，其连接到一个或多个相邻无线电收发节点组合中的无线电收发节点，并被配置为执行与所述本地计算节点相对应的小区的所有通信处理或第一部分通信处理; 包括中央计算节点的集中计算层，连接到本地计算层中的本地计算节点，并被配置为执行通信处理的第二部分，其中全部通信处理包括第一部分和第二部分的通信处理。
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