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公开(公告)号：US20180123666A1
公开(公告)日：2018-05-03
申请号：US15858983
申请日：2017-12-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Weimin Chen , Li Wen , Zhengzheng Li , Lu Guan , Huaizhi Zhang
CPC classification number: H04B7/0617 , H04B17/11 , H04B17/21 , H04B17/309 , H04L25/0204 , H04L25/0224 , H04W40/16
Abstract: A joint channel correction method, an apparatus, and a system are disclosed. The joint channel correction method includes: sending a first joint channel correction instruction to a first RRU; sending a second joint channel correction instruction to a second RRU; receiving a result sent by the second RRU about reception of the first correction reference signal through X2 receive channels in X2 traffic channels; receiving a result sent by the first RRU about reception of the second correction reference signal through X1 receive channels in X1 traffic channels; and obtaining correction compensation coefficients of the X1 traffic channels and/or the X2 traffic channels through calculation. Technical solutions provided by embodiments of the present application help implement channel correction between RRUs without a channel self-correction function.
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Patent Agency Ranking
公开(公告)号：US09614597B2
公开(公告)日：2017-04-04
申请号：US14585765
申请日：2014-12-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiongshu Yi , Jing Yang , Lu Guan
IPC: H04B7/04 , H04L5/00 , H04B7/0452 , H04B7/0413 , H04B7/06
CPC classification number: H04B7/0452 , H04B7/0413 , H04B7/0697 , H04L5/0048
Abstract: Disclosed are a method, device and system for transmitting a Multi-user Multiple-Input-Multiple-Output (MU-MIMO) pilot and data. The method includes: when at least two terminals transmit a MU-MIMO pilot and data on one same time/frequency resource, constructing a k-stream SU-MIMO pilot and data; based on the configuration mode of the k-stream SU-MIMO pilot, modifying demodulation pilot port parameters of the at least two terminals; and based on the transmission mode of the k-stream SU-MIMO pilot and data, transmitting the k-stream SU-MIMO pilot and data to the at least two terminals, respectively. Further disclosed are a device and system for transmitting a MU-MIMO pilot and data.
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公开(公告)号：US11943017B2
公开(公告)日：2024-03-26
申请号：US17357392
申请日：2021-06-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xin Xia , Zhenbing Zhang , Yun Liu , Lu Guan
IPC: H04W4/00 , H04B7/0456 , H04W8/24 , H04W72/20
CPC classification number: H04B7/0456 , H04W8/24 , H04W72/20
Abstract: This application discloses a precoding method and apparatus, and an information transmission method and apparatus, and relates to the field of communications technologies, to help improve overall performance of a plurality of data streams corresponding to a same codeword. The precoding method includes: decomposing a channel matrix into a product of a matrix Q, a matrix R, and a matrix PH, where the matrix PH is a conjugate transpose matrix of a matrix P, both the matrix Q and the matrix P are unitary matrices, and the matrix R is an upper triangular matrix; and precoding to-be-sent data based on the matrix P.
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公开(公告)号：US20210328632A1
公开(公告)日：2021-10-21
申请号：US17357392
申请日：2021-06-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xin Xia , Zhenbing Zhang , Yun Liu , Lu Guan
IPC: H04B7/0456 , H04W72/04 , H04W8/24
Abstract: This application discloses a precoding method and apparatus, and an information transmission method and apparatus, and relates to the field of communications technologies, to help improve overall performance of a plurality of data streams corresponding to a same codeword. The precoding method includes: decomposing a channel matrix into a product of a matrix Q, a matrix R, and a matrix PH, where the matrix PH is a conjugate transpose matrix of a matrix P, both the matrix Q and the matrix P are unitary matrices, and the matrix R is an upper triangular matrix; and precoding to-be-sent data based on the matrix P.
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公开(公告)号：US10320464B2
公开(公告)日：2019-06-11
申请号：US15858983
申请日：2017-12-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Weimin Chen , Li Wen , Zhengzheng Li , Lu Guan , Huaizhi Zhang
Abstract: A joint channel correction method, an apparatus, and a system are disclosed. The joint channel correction method includes: sending a first joint channel correction instruction to a first RRU; sending a second joint channel correction instruction to a second RRU; receiving a result sent by the second RRU about reception of the first correction reference signal through X2 receive channels in X2 traffic channels; receiving a result sent by the first RRU about reception of the second correction reference signal through X1 receive channels in X1 traffic channels; and obtaining correction compensation coefficients of the X1 traffic channels and/or the X2 traffic channels through calculation. Technical solutions provided by embodiments of the present application help implement channel correction between RRUs without a channel self-correction function.
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公开(公告)号：US10164799B2
公开(公告)日：2018-12-25
申请号：US15068502
申请日：2016-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiongshu Yi , Chaochao Zhang , Lu Guan , Yun Liu
Abstract: The present disclosure relates to a remote radio unit (RRU), which is connected to a baseband unit (BBU) and an antenna, comprising: a service transmit channel configured to transmit a first correction signal through the antenna, and a standing wave detecting circuit associated with the service transmit channel, wherein: a working frequency of the standing wave detecting circuit is consistent with the service transmit channel, and the standing wave detecting circuit is capable of detecting a standing wave ratio of the service transmit channel and is configured to receive a correction signal looped back by the antenna, and send the correction signal looped back by the antenna to the BBU, wherein the correction signal looped back by the antenna comprises a portion of the first correction signal reflected by the antenna and is used for a calculation of a correction coefficient of the service transmit channel.
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