公开(公告)号：EP2924805A4

公开(公告)日：2015-12-09

申请号：EP13864046

申请日：2013-12-20

申请人： HUAWEI TECH CO LTD

发明人： LU WEISHAN ,  WU TAO

IPC分类号： H01Q19/32 ,  H04B7/04

CPC分类号： H01Q21/06 ,  H01Q3/446 ,  H01Q5/314 ,  H01Q5/385 ,  H01Q19/32 ,  H01Q21/20 ,  H04B7/0413 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/444

摘要： Embodiments of the present invention provide a single radio frequency double-stream transmission apparatus, an application method and an antenna system, wherein the apparatus includes: a radio frequency link, a reactance control circuit, a parasitic reactor, an active antenna and an even number M of parasitic antennas, wherein M is larger than 2; the radio frequency link is configured to generate a radio frequency signal; the active antenna is connected with the radio frequency link, the parasitic antennas are respectively connected with the parasitic reactor, the distances from the parasitic antennas to the active antenna are the same, and the radian between adjacent parasitic antennas is 360 M degrees; the parasitic reactor may be adjusted by the reactance control circuit to make the reactance values of any pair of parasitic antennas in mirror symmetry via the active antenna be different and the reactance values of the rest pairs of parasitic antennas in mirror symmetry via the active antenna be equal respectively. An additional degree of freedom of adjustable parasitic reactance is introduced to achieve double-stream multiplexing, so as to achieve high order modulation of Single RF MIMO. The system stability may be ensured, the system power may be saved and the computational burden may be alleviated, while achieving the high order modulation.

摘要翻译： 本发明的实施例提供单射频双流传输装置，应用方法和天线系统，其中该装置包括：射频链路，电抗控制电路，寄生电抗器，有源天线和偶数 M个寄生天线，其中M大于2; 射频链路被配置为产生射频信号; 有源天线与射频链路连接，寄生天线分别与寄生电抗器相连，从寄生天线到有源天线的距离相同，相邻寄生天线之间的弧度为360度; 可以通过电抗控制电路来调整寄​​生电抗器，以使得通过有源天线成反射镜对称的任何一对寄生天线的电抗值不同，并且通过有源天线以对称的其余寄生天线对的电抗值为 相等。 引入可调节寄生电抗的附加自由度来实现双流复用，从而实现单射频MIMO的高阶调制。 可以确保系统稳定性，同时实现高阶调制，可以节省系统功率，减轻计算负担。

公开(公告)号：EP3208948A4

公开(公告)日：2017-09-27

申请号：EP14905506

申请日：2014-11-07

申请人： HUAWEI TECH CO LTD

发明人： LU WEISHAN ,  YU JIAN

IPC分类号： H04B7/08 ,  H04L27/26

CPC分类号： H04B7/08 ,  H04B7/0452 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0064 ,  H04L5/0091 ,  H04L27/26

摘要： The present invention discloses an information transmission method, an access point, and user equipment, where the method includes: determining a maximum orthogonal frequency division multiplexing OFDM symbol quantity of a frequency band used for downlink transmission, where the maximum OFDM symbol quantity of the frequency band is a maximum value of maximum OFDM symbol quantities of all subbands of the frequency band; determining, according to a value relationship between a maximum OFDM symbol quantity of a subband to which user equipment belongs and the maximum OFDM symbol quantity of the frequency band, additional long training field instruction information used to instruct whether to send an additional long training field to the user equipment; and sending an indication message to the user equipment, where the indication message includes the additional long training field instruction information. According to the method and the apparatus in embodiments of the present invention, a method for transmitting an additional long training field can be used in a data transmission process, so that zero padding overheads in the data transmission process are reduced, frequency band resource utilization is improved, and data transmission reliability is improved.

摘要翻译： 本发明公开了一种信息传输方法，接入点和用户设备，该方法包括：确定用于下行传输的频段的最大正交频分复用OFDM符号量，其中频率的最大OFDM符号量 频带是该频带的所有子带的最大OFDM符号量的最大值; 根据用户设备所属的子带的最大OFDM符号量与所述频带的最大OFDM符号量之间的值关系，确定用于指示是否发送附加长训练字段的附加长训练字段指示信息给 用户设备; 向所述用户设备发送指示消息，所述指示消息中包含所述附加长训练字段指示信息。 根据本发明实施例的方法和装置，可以在数据传输过程中使用传输附加长训练字段的方法，以减少数据传输过程中的零填充开销，频带资源利用率 改进，数据传输可靠性提高。

公开(公告)号：EP3121973A4

公开(公告)日：2017-03-01

申请号：EP14886038

申请日：2014-03-18

申请人： HUAWEI TECH CO LTD

发明人： LU WEISHAN ,  WU TAO

IPC分类号： H04B7/08 ,  H04B7/06

CPC分类号： H04B7/0632 ,  H04B7/0617 ,  H04B7/0684 ,  H04B7/0695 ,  H04B7/088 ,  H04W72/085

摘要： Embodiments of the present invention disclose a directional direction selection method, apparatus, and system. The method includes: sending L groups of pilots in an omnidirectional direction manner, where the L groups of pilots are received by UE by using L directional directions, and the L groups of pilots are used by the UE to switch to a directional direction with best channel quality in the L directional directions; sending, by a base station, S groups of pilots by using S directional directions respectively, where the S groups of pilots are in a one-to-one correspondence with the S directional directions, and the S groups of pilots are used by the UE to estimate channel quality corresponding to the S directional directions; determining, by the base station, an optimal directional direction in the S directional directions according to the channel quality corresponding to the S groups of pilots; and switching, by the base station, to the optimal directional direction in the S directional directions. In the embodiments of the present invention, an optimal directional direction corresponding to the UE when the base station uses omnidirectional directions is first determined, and then an optimal directional direction corresponding to the base station when the UE uses the optimal directional direction is determined, thereby reducing complexity to O ( M + N ).

公开(公告)号：EP3211845A4

公开(公告)日：2018-05-02

申请号：EP14905673

申请日：2014-11-14

申请人： HUAWEI TECH CO LTD

发明人： LIN WEI ,  LIU LE ,  BENEDETTO SERGIO ,  MONTORSI GUIDO ,  LU WEISHAN

IPC分类号： H04L27/26 ,  H04L1/00 ,  H04L1/04

CPC分类号： H04L27/2608 ,  H04L1/0042 ,  H04L1/0071 ,  H04L1/04 ,  H04L27/26 ,  H04L47/34 ,  H04W72/04 ,  H04W84/12

摘要： Embodiments of the present invention provide an interleaving processing method and device in a WLAN system. The apparatus includes: a bit parsing unit, configured to allocate bits in a coded data stream to n sub resource block interleaving units according to a specific sequence, where n is a positive integer greater than 1, and a value of n is a quantity of resource blocks allocated to the user; and the sub resource block interleaving units, configured to perform discrete interleaving on input bits. According to the foregoing apparatus and method, system performance can be improved.

公开(公告)号：EP3200413A4

公开(公告)日：2017-10-18

申请号：EP14904602

申请日：2014-10-22

申请人： HUAWEI TECH CO LTD

发明人： LIU SHENG ,  LU WEISHAN ,  CHEN TEYAN

IPC分类号： H04L27/26

CPC分类号： H04L27/2608 ,  H04B7/0452 ,  H04L27/26 ,  H04W72/0453

摘要： Embodiments of the present invention provide a signal processing method and apparatus, and a device, applied to an MU-MIMO system. The signal processing apparatus includes: a signal acquiring module and a sending module. A signal in the embodiments of the present invention is a signal including N spatial flows, and the signal includes a training field, where the training field includes a first part and a second part. Subcarriers of an OFDM symbol in the second part of the training field are divided into N TSSs in a division manner that is the same as a division manner of sub-carriers of an OFDM symbol in the first part of the training field, and each spatial flow corresponds to at least one sub-carrier in a TSS, in each frequency domain location, of the OFDM symbol in the second part of the training field. By means of a structure of the second part of the training field in the embodiments of the present invention, phase correction is effectively performed on channel estimation that is obtained in another OFDM symbol in the first part of the training field, so that precision of the channel estimation is improved, and estimation performance is improved.

公开(公告)号：EP3197114A4

公开(公告)日：2017-08-09

申请号：EP14899104

申请日：2014-08-06

申请人： HUAWEI TECH CO LTD

发明人： LU WEISHAN ,  EZRI DORON ,  LIU LE

IPC分类号： H04L27/26 ,  H04L5/00 ,  H04L25/02

CPC分类号： H04L5/0048 ,  H04B7/0452 ,  H04L5/0051 ,  H04L25/0226 ,  H04L27/2613 ,  H04L27/2657 ,  H04W72/0453

摘要： The present invention discloses a method for transmitting information, a station, and an access point in a MU-MIMO system. The method includes: determining, by a first station, multiple to-be-sent first long training sequences, where the multiple first long training sequences include at least one pilot for phase tracking ; and sending, by the first station, the multiple first long training sequences to an access point on multiple symbols, where a second station sends multiple second long training sequences to the access point on the multiple symbols, the multiple second long training sequences include at least one pilot for phase tracking , and a first pilot for phase tracking and a second pilot for phase tracking occupy different time-frequency resources, where the at least one pilot for phase tracking included in the multiple first long training sequences includes the first pilot for phase tracking , and the at least one pilot for phase tracking included in the multiple second long training sequences includes the second pilot for phase tracking . By using the method for transmitting uplink information disclosed in the present invention, frequency offset parameters of stations can be determined.

摘要翻译： 本发明公开了一种MU-MIMO系统中的信息传输方法，站点和接入点。 该方法包括：第一站点确定多个待发送的第一长训练序列，其中，所述多个第一长训练序列包括至少一个用于相位跟踪的导频; 所述第一站点在多个符号上向所述接入点发送所述多个第一长训练序列，第二站点在所述多个符号上向所述接入点发送多个第二长训练序列，所述多个第二长训练序列至少包括 一个用于相位跟踪的导频，以及用于相位跟踪的第一导频和用于相位跟踪的第二导频占据不同的时间 - 频率资源，其中包括在多个第一长训练序列中的用于相位跟踪的至少一个导频包括用于相位的第一导频 跟踪，并且包括在多个第二长训练序列中的用于相位跟踪的至少一个导频包括用于相位跟踪的第二导频。 通过使用本发明公开的传输上行信息的方法，可以确定站点的频偏参数。

公开(公告)号：EP3065330A4

公开(公告)日：2016-12-14

申请号：EP14857075

申请日：2014-04-17

申请人： HUAWEI TECH CO LTD

发明人： WU TAO ,  LU WEISHAN

IPC分类号： H04L1/06 ,  H04L1/18

CPC分类号： H04L1/1825 ,  H04L1/1845

摘要： Provided are a data retransmission method and a communication device. The data retransmission method comprises: sending, by a transmitting end device, a first data set to a receiving end device using a first transmitting mode set; and retransmitting, by the transmitting end device, the first data set to the receiving end device using a second transmitting mode set, so that the receiving end device merges the first data set sent by the transmitting end device using the first transmitting mode set with the first data set retransmitted using the second transmitting mode set and demodulates the first data set, the transmitting modes in the first transmitting mode set and the transmitting modes in the second transmitting mode set being orthogonal in one-to-one correspondence or being quasi-orthogonal. The data retransmission method and communication device provided in the embodiments of the present invention are used for improving the performance of data retransmission.

公开(公告)号：EP3240351A4

公开(公告)日：2017-11-22

申请号：EP15876663

申请日：2015-11-26

申请人： HUAWEI TECH CO LTD

发明人： DU ZHENGUO ,  LU WEISHAN ,  YANG YUNSONG ,  RONG ZHIGANG

IPC分类号： H04W74/00 ,  H04B7/0452 ,  H04L5/00 ,  H04L27/26 ,  H04W28/16 ,  H04W74/08 ,  H04W84/12 ,  H04W88/08

CPC分类号： G06F21/606 ,  H04B7/0452 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0053 ,  H04L5/0094 ,  H04L25/03866 ,  H04L27/2602 ,  H04W28/16 ,  H04W72/042 ,  H04W84/12 ,  H04W88/08 ,  H04W92/10

摘要： Embodiments of the present invention provide a data transmission protection method and apparatus. The method includes: receiving, by a station, resource allocation information sent by an access point; obtaining, according to a status of mutual overlap between an allocated transmission channel and multiple subchannels, at least one overlapping subchannel used by the station to send a transmission protection message; and sending the transmission protection message on a current overlapping subchannel according to a status of whether each overlapping subchannel in the at least one overlapping subchannel used by the station to send the transmission protection message is used only by the station to send the transmission protection message, where the transmission protection message is used to protect downlink data transmission from the access point to the station, the transmission protection message includes duration, and the duration is used to indicate an exclusive time of the station for the transmission channel allocated to the station. The present invention can protect data transmission from an access point to a station.

公开(公告)号：EP3190737A4

公开(公告)日：2017-09-06

申请号：EP14902560

申请日：2014-09-28

申请人： HUAWEI TECH CO LTD

发明人： LIN WEI ,  LIU LE ,  ZHU JUN ,  LU WEISHAN

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04W52/02 ,  H04W84/12

CPC分类号： H04W52/0229 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2613 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146

摘要： The present invention discloses a high-efficiency short training field sequence generation method, a signal sending method, a signal receiving method, and related apparatuses, where the high-efficiency short training sequence generation method includes: increasing frequency domain density of a frequency domain sequence corresponding to a first high-efficiency short training field sequence to generate a frequency domain sequence with increased frequency domain density; generating a second high-efficiency short training field sequence according to the frequency domain sequence with increased frequency domain density; and using the second high-efficiency short training field sequence as a high-efficiency short training field sequence in a preamble sequence of a data transmission frame in a wireless local area network WLAN. In embodiments of the present invention, a cycle of a high-efficiency short training field sequence used for performing stage-2 AGC adjustment in the WLAN may be increased, and a maximum CSD value that can be used is further increased.

摘要翻译： 本发明公开了一种高效短训练序列生成方法，信号发送方法，信号接收方法及相关装置，所述高效短训练序列生成方法包括：增加频域序列的频域密度 对应于第一高效短训练场序列以生成频域密度增加的频域序列; 根据频域密度增加的频域序列生成第二高效短训练场序列; 将所述第二高效短训练场序列作为无线局域网WLAN中数据传输帧的前导序列中的高效短训练场序列。 在本发明的实施例中，可以增加用于在WLAN中执行阶段2 AGC调整的高效率短训练场序列的周期，并且可以使用的最大CSD值进一步增加。

公开(公告)号：EP3096465A4

公开(公告)日：2017-02-22

申请号：EP14879595

申请日：2014-01-21

申请人： HUAWEI TECH CO LTD

发明人： WU TAO ,  LU WEISHAN

IPC分类号： H04L5/00 ,  H04B7/04 ,  H04B7/06 ,  H04L27/00 ,  H04L27/20

CPC分类号： H04B7/0619 ,  H04B7/0417 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0092 ,  H04L27/206

摘要： Embodiments of the present invention provide a MIMO transmission method and system, and a device. The transmitter includes: at least two first antennas performing transmission by using MIMO, each configured to send, on a specified resource location, a pilot signal and specified state information and a pilot location that correspond to the pilot signal to a receiver according to a respective specified state, so that the receiver determines, according to the specified state information and the pilot location, an antenna state set corresponding to a maximum channel capacity or an optimal antenna state set corresponding to a maximum signal-to-noise ratio, and further configured to receive the optimal antenna state set fed back by the receiver; and a processor, configured to correspondingly adjust a state of each first antenna according to a state of each first antenna that is indicated by the optimal antenna state set, so that each first antenna sends a data packet to the receiver according to the state in the optimal antenna state set. An optimal state combination of at least two antennas can be obtained with a minimum quantity of state attempts, so that efficiency of utilizing a pilot signal is improved.