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公开(公告)号：US20230092131A1
公开(公告)日：2023-03-23
申请号：US18071333
申请日：2022-11-29
发明人： Dapeng Lao , Jinnan Liu , Rongjiang Liu , Chen Yang , Jintai Zhu , Dejian Li
摘要： A radar signal transmitting method, a radar signal receiving method, and an apparatus are applied to a radar apparatus. The radar signal transmitting method includes: sending a first signal and a second signal in S slots, where a phase of the first signal remains unchanged in the S slots, and the first signal may be equivalent to a SIMO signal; and sending the second signal in at least one of a time division manner or a code division manner, where phase modulation is performed, by using a step of 2πky/P, on a signal that is in the second signal and that is sent through each of m transmit antennas, and the second signal is equivalent to a MIMO signal. When P=2, the MIMO signal is sent in a time division manner. When P>2, the MIMO signal is sent in a time division manner and a code division manner.
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2.发明申请公开(公告)号：US20220171021A1
公开(公告)日：2022-06-02
申请号：US17675258
申请日：2022-02-18
发明人： Jinnan Liu , Mu Zhou , Dapeng Lao
摘要： A signal transmission method and apparatus, a signal processing method and apparatus, and a radar system are provided. The signal transmission method is applied to a multiple input multiple output MIMO radar, the MIMO radar includes a transmitter, and the transmitter includes a plurality of transmit antennas. The signal transmission method includes: sending, by the transmitter, a first burst in a first measurement frame, where the first measurement frame is used to measure a velocity of a target, and when the first burst is sent, each of the plurality of transmit antennas sends a chirp signal in a time division manner; and sending, by the transmitter, a second burst in the first measurement frame after the transmitter sends the first burst in the first measurement frame, where when the second burst is sent, a quantity of transmit antennas configured to send a chirp signal is one.
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公开(公告)号：US11075677B2
公开(公告)日：2021-07-27
申请号：US16804713
申请日：2020-02-28
发明人： Jinnan Liu , Dejian Li
摘要： Example methods and devices for sending a beam refinement protocol packet are provided in this application, which support a transmission format of multi-channel transmission and multi-antenna transmission. One example method for sending a beam refinement protocol packet includes determining a transmission format of a beam training (TRN) subfield by a first device based on first information. The first information includes information indicating a quantity of transmit chains used for transmitting the TRN subfield on each channel and information indicating a channel aggregation mode. The first device sends a beam refinement protocol packet to a second device on a transmit chain based on the transmission format, where the beam refinement protocol packet includes a data field and a TRN field, and the TRN field includes a plurality of TRN subfields.
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公开(公告)号：US10461800B2
公开(公告)日：2019-10-29
申请号：US15289254
申请日：2016-10-10
发明人： Jinnan Liu , Chao Li
摘要： A communication control method and a related apparatus are disclosed. A communication control method includes transmitting, by a base station, a configuration message to N user terminals in a cell, where the configuration message carries a secondary configuration indication, and the secondary configuration indication is used to indicate a secondary transmission configuration configured by the base station for the N user terminals, where the secondary transmission configuration of the N user terminals is different from a primary transmission configuration of M user terminals in the cell. The method also includes obtaining, by the base station, interference parameters about interference that the N user terminals receive from neighboring user terminals in a full-duplex subframe, and activating the secondary transmission configuration for K user terminals in the N user terminals by using an activation message.
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公开(公告)号：US20190074873A1
公开(公告)日：2019-03-07
申请号：US16182215
申请日：2018-11-06
发明人： Jinnan Liu , Dejian Li , Yongping Zhang , Jiamin Chen
IPC分类号： H04B7/0417
摘要： A beam refinement method and a communications device, where the method includes determining, by a first device, a format of an enhanced Beam Refinement Protocol (eBRP) packet, where the eBRP packet includes a training field, the training field includes an eBRP channel estimation (eBRP-CE) sub-field and an eBRP training (eBRP-TRN) sub-field, and a ratio of a quantity of Gray codes composing the eBRP-CE sub-field in the training field to a quantity of Gray codes composing the eBRP-TRN sub-field in the training field is less than 9:20, and sending, by the first device, the eBRP packet to a second device based on the determined format of the eBRP packet. Hence, an effective proportion of the eBRP-TRN sub-field in the training field can be increased such that more Antenna Weight Vector (AWV) configurations can be attempted within a same period of time.
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6.发明申请公开(公告)号：US20170086199A1
公开(公告)日：2017-03-23
申请号：US15367671
申请日：2016-12-02
发明人： Yongping Zhang , Jinnan Liu
CPC分类号： H04W72/0453 , H04B7/0626 , H04L5/0051 , H04W16/32 , H04W24/02 , H04W24/10 , H04W36/00 , H04W36/0083 , H04W48/08 , H04W48/20 , H04W64/00
摘要： The present disclosure discloses a macro base station includes: a processing unit, configured to determine location information of user equipment UE within coverage of the macro base station, and allocate a candidate micro base station to the UE according to the location information of the UE; and a sending unit, configured to send identifier information of the candidate micro base station to the UE and send the location information of the UE to the candidate micro base station. According to embodiments of the present disclosure, a channel state of a millimeter-wave band channel between a micro base station and UE can be measured.
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公开(公告)号：US20210409084A1
公开(公告)日：2021-12-30
申请号：US17375656
申请日：2021-07-14
发明人： Dejian Li , Jinnan Liu
摘要： A beamforming training method includes sending, by a first device, first indication information to a second device, where the first indication information instructs the second device to not perform an initiator sector sweep (ISS), sending, by the first device, a sector sweep frame of a responder sector sweep (RSS) to the second device, and receiving, by the first device, feedback information obtained by the second device during the RSS.
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公开(公告)号：US11070263B2
公开(公告)日：2021-07-20
申请号：US16430730
申请日：2019-06-04
发明人： Dejian Li , Jinnan Liu
摘要： This application provides example beamforming (BF) training methods, receiving devices, and sending devices. One example method includes performing BF training on at least one channel with a first device based on BF training request information, where the BF training request information includes antenna configuration information of the BF training and channel configuration information of the at least one channel. First feedback information sent by the first device is received, where the first feedback information includes a measurement result of the BF training, information about an antenna corresponding to the measurement result, beam information of the antenna, and channel information corresponding to the antenna. At least one of an optimal antenna configuration or digital domain BF precoding information on the at least one channel is determined based on the first feedback information.
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公开(公告)号：US11025466B2
公开(公告)日：2021-06-01
申请号：US16401729
申请日：2019-05-02
发明人： Jinnan Liu , Dejian Li , Jiamin Chen
摘要： The present application discloses a reference signal configuration method, including: generating a reference signal, where the reference signal includes a first part and a second part, the first part and the second part have a same length, and a sum of a DC component of the first part and a DC component of the second part is zero; generating an enhanced directional multi-gigabit EDMG packet including the reference signal; and sending the EDMG packet. Embodiments of the present application further provide a reference signal configuration apparatus. According to the embodiments of the present application, a reference signal with a zero DC component can be obtained, thereby facilitating channel estimation that is based on CE.
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公开(公告)号：US10911107B2
公开(公告)日：2021-02-02
申请号：US16182215
申请日：2018-11-06
发明人： Jinnan Liu , Dejian Li , Yongping Zhang , Jiamin Chen
IPC分类号： H04B7/0417 , H04B7/06 , H04W40/06 , H04W16/28 , H04B7/10
摘要： A beam refinement method and a communications device, where the method includes determining, by a first device, a format of an enhanced Beam Refinement Protocol (eBRP) packet, where the eBRP packet includes a training field, the training field includes an eBRP channel estimation (eBRP-CE) sub-field and an eBRP training (eBRP-TRN) sub-field, and a ratio of a quantity of Gray codes composing the eBRP-CE sub-field in the training field to a quantity of Gray codes composing the eBRP-TRN sub-field in the training field is less than 9:20, and sending, by the first device, the eBRP packet to a second device based on the determined format of the eBRP packet. Hence, an effective proportion of the eBRP-TRN sub-field in the training field can be increased such that more Antenna Weight Vector (AWV) configurations can be attempted within a same period of time.
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