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21.发明申请公开(公告)号：US20200044717A1
公开(公告)日：2020-02-06
申请号：US16600746
申请日：2019-10-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianqin Liu
IPC: H04B7/06 , H04B7/0413 , H04B7/0456 , H04B7/0417
Abstract: Embodiments of the present invention provide a method for determining a precoding matrix indicator, a receiving device, and a sending device. The method for determining a precoding matrix indicator includes: selecting, by a receive end, a precoding matrix W from a codebook based on a reference signal sent by a transmit end, where the precoding matrix W is a product of two matrices W1 and W2, where the W1 includes NB block matrices Xi, NB≥1, and the W1 is indicated as: W1=diag{X1, . . . , XNB}, where 1≤i≤NB, and a column xi,j of each block matrix Xi is a Kronecker kronecker product of a first vector Aij and a second vector Bij, that is, xij=Aij⊗Bij; and sending, by the receive end, a precoding matrix indicator PMI corresponding to the precoding matrix W to the transmit end, so that the transmit end obtains the precoding matrix W according to the PMI.
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公开(公告)号：US10419090B2
公开(公告)日：2019-09-17
申请号：US16148296
申请日：2018-10-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ruiqi Zhang , Jianqin Liu
IPC: H04B7/02 , H04B7/0456 , H04L1/06 , H04B7/06 , H04W84/04
Abstract: A method and apparatus for precoding matrix indicator feedback reduce a quantity of bits in the feedback. In the method, a terminal device receive a reference signal from a base station, determines a precoding matrix W in a precoding matrix set corresponding to a rank indication. W satisfies W=W1×W2×W3, W1, W2 and W3 and matrices and respectively corresponding to a first, second and third precoding matrix indicator. None of W1, W2, and W3 is an identity matrix, and the 2M columns in W1 comprise every column in W1×W2. The terminal device transmits the rank indication, the first precoding matrix indicator, the second precoding matrix indicator, and the third precoding matrix indicator to the base station. Therefore, a quantity of to-be-selected vectors is reduced by using a first-stage feedback and a second-stage feedback, thereby reducing calculation complexity of third-stage feedback, and reducing a quantity of bits in the third-stage feedback.
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公开(公告)号：US10404430B2
公开(公告)日：2019-09-03
申请号：US15184546
申请日：2016-06-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianqin Liu , Jianghua Liu
Abstract: The present invention provides a method for transmitting a pilot signal, a base station, and user equipment The method including: determining, by a base station, a transmission period of a pilot antenna port group; and sending, by the base station, in a transmission period corresponding to each pilot antenna port group, a pilot signal to user equipment by using a resource corresponding to the pilot antenna port group, so that the user equipment measures channel quality according to the pilot signal. By means of the technical solutions provided in the embodiments of the present invention, pilot signal overheads can be reduced.
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公开(公告)号：US20190254034A1
公开(公告)日：2019-08-15
申请号：US16370315
申请日：2019-03-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianqin Liu , Chuanfeng He
CPC classification number: H04W72/0466 , H04B7/06 , H04B7/26 , H04L1/00 , H04W72/00 , H04W72/005 , H04W72/04 , H04W92/10
Abstract: This application provides a PBCH transmission method and an apparatus. The method includes: receiving, by a terminal device, a PBCH sent by a network device, where the PBCH includes seven most significant bits of an SFN of a radio frame in which the PBCH is located; determining, by the terminal device, a least significant bit of the SFN based on indication information of the least significant bit of the SFN; determining, by the terminal device based on the PBCH, a scrambling code of the PBCH, and determining two remaining bits of the SFN based on a one-to-one correspondence between the two remaining bits of the SFN and the scrambling code of the PBCH; and determining, by the terminal device, the SFN of the radio frame in which the PBCH is located.
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公开(公告)号：US10383123B2
公开(公告)日：2019-08-13
申请号：US15840659
申请日：2017-12-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Qiang Wu , Jianqin Liu , Jianghua Liu
Abstract: The present disclosure describes a physical downlink control channel (PDCCH) candidate determining method and device, and relates to the field of wireless communications, so as to avoid PDCCH blocking and improve reliability of control information transmission. The method of the present invention includes: determining an PDCCH resource set p in a subframe k, where the PDCCH resource set p includes NECCE,p,k=q×r enhanced control channel elements (ECCEs), an PDCCH candidate of an PDCCH with an aggregation level being L corresponds to L ECCEs having consecutive reference numerals, and an PDCCH candidate is capable of carrying an PDCCH; and determining the number of PDCCH candidates at the aggregation level L of a carrier corresponding to an index Cellindex and an ECCE corresponding to each PDCCH candidate, where the ECCE corresponding to each PDCCH candidate at the aggregation level L is related to the index Cellindex.
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Patent Agency Ranking
公开(公告)号：US20190174551A1
公开(公告)日：2019-06-06
申请号：US16272705
申请日：2019-02-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kunpeng Liu , Bingyu Qu , Jianqin Liu
Abstract: A method includes: configuring, by a base station, at least two types of random access resources, where the at least two types of random access resources include a first-type random access resource and a second-type random access resource; and different types of random access resources are in a one-to-one correspondence with different sending beam forms of a terminal; or the first-type random access resource is associated with resources of different downlink signals, and the second-type random access resource is not associated with the resources of the different downlink signals.
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公开(公告)号：US20190173541A1
公开(公告)日：2019-06-06
申请号：US16273680
申请日：2019-02-12
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianqin Liu
IPC: H04B7/0456 , H04B7/06 , H04L5/00
Abstract: Embodiments of the present invention relate to the communications field, and provide a data transmission method, a sending device, and a receiving device. Transmission requirements of different subbands can be maximally satisfied, and a system throughput can be improved. The method includes: determining, by a sending device, rank indicators of J (an integer greater than or equal to 1) subbands corresponding to a to-be-transmitted channel, where the rank indicators of the J subbands are not totally the same; determining, by the sending device based on a rank indicator of each of the J subbands, a transmission block size.
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公开(公告)号：US10312990B2
公开(公告)日：2019-06-04
申请号：US15909732
申请日：2018-03-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Bingyu Qu , Jianqin Liu , Kunpeng Liu , Yongxing Zhou
Abstract: A signal sending method includes: mapping, by a sending device, a first sequence onto M even-numbered subcarriers in 2M subcarriers, and mapping a second sequence onto M odd-numbered subcarriers in the 2M subcarriers, where the first sequence is one of a third sequence and a fourth sequence, the second sequence is the other of the third sequence and the fourth sequence, the 2M subcarriers are subcarriers on a same time domain symbol, and for elements of a second time domain sequence corresponding to the fourth sequence and a first time domain sequence corresponding to the third sequence at a same moment, when a complex factor is taken out, one of the first time domain sequence and the second time domain sequence is an in-phase component, and the other is a quadrature component; and transforming sequences mapped onto the 2M subcarriers to a time domain to generate transmit signals, and then sending the transmit signals.
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公开(公告)号：US20180376430A1
公开(公告)日：2018-12-27
申请号：US16117410
申请日：2018-08-30
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Jianqin Liu
Abstract: An uplink power control method and an device is provided. The uplink power control method includes: sending a configured measurement pilot, wherein the measurement pilot is corresponding to information about a precoding matrix; and sending a configured power control parameter, wherein the power control parameter is corresponding to the configured measurement pilot, and the power control parameter is used to control transmit power of a terminal device in a serving cell. According to the embodiments of the present invention, accuracy of uplink power control is improved.
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30.发明申请公开(公告)号：US20180343094A1
公开(公告)日：2018-11-29
申请号：US16055317
申请日：2018-08-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qiang Wu , Chi Gao , Jianqin Liu , Jianghua Liu
Abstract: The present invention provides methods for transmitting and receiving a control channel, a base station, and a user equipment. The method for transmitting a control channel includes: determining m PRB pairs used for transmitting a control channel to be transmitted; when a distributed transmission mode is used for transmission, determining an aggregation level L of the control channel to be transmitted; determining, according to the aggregation level L, a first control channel candidate at the aggregation level L; and placing, on physical resources to which the first control channel candidate is mapped, control information of the control channel to be transmitted, and transmitting the control information. The present invention improves multiplexing efficiency of control channels of different modes.
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