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1.发明授权公开(公告)号：US11736267B2
公开(公告)日：2023-08-22
申请号：US16892691
申请日：2020-06-04
发明人： Tong Ji , Yiling Wu , Guangwei Yu , Robert William Young , Brian Martin Gaffney
CPC分类号： H04L7/041 , H04J11/0069 , H04J13/0062 , H04L27/2662 , H04L27/2663 , H04W56/00 , H04W56/001 , H04L27/2657 , H04L27/2671 , H04W4/70
摘要： The present disclosure relates to the field of wireless communications technologies, relates to a signal sending device, a signal receiving device, a symbol timing synchronization method, and a system, and resolves a problem that complexity of symbol timing synchronization performed by a terminal with relatively low crystal oscillator accuracy is high. In a receiving device, a receiving module receives a synchronization signal including a first signal and a second signal. The first signal includes N1 generalized ZC sequences, and the second signal includes N2 generalized ZC sequences. The second signal is used to distinguish different cells or different cell groups. There are at least two generalized ZC sequences with different root indexes in (N1+N2) generalized ZC sequences. A processing module performs a first sliding correlation operation and a second sliding correlation operation on the synchronization signal, and performs symbol timing synchronization according to a relationship between a sliding correlation peak generated when a sliding correlation is performed on the N1 generalized ZC sequences and a sliding correlation peak generated when a sliding correlation is performed on the N2 generalized ZC sequences. This has relatively low implementation complexity, compared with an existing method in which grid search should be performed multiple times to compensate for a relatively large phase rotation.
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公开(公告)号：US11317295B2
公开(公告)日：2022-04-26
申请号：US16828873
申请日：2020-03-24
发明人： Kun Yang , Ronghui Wen , Feng Yu , Guangwei Yu
摘要： In the method, the network device sends first signaling to a first terminal device, the first signaling is used to instruct the first terminal device to perform, on an unlicensed spectrum, a listen before talk LBT procedure used for occupying an unlicensed frequency band, and send uplink information within a first time length on the unlicensed frequency band; the network device receives, on the unlicensed spectrum, the uplink information from the first terminal device within the first time length, where the first time length is a part of maximum channel occupancy time obtained by the first terminal device on the unlicensed spectrum, and the first time length is less than the maximum channel occupancy time.
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公开(公告)号：US11178632B2
公开(公告)日：2021-11-16
申请号：US16515747
申请日：2019-07-18
发明人： Feng Gao , Guangwei Yu , Feng Yu , Wurong Zhang
IPC分类号： H04W56/00
摘要： Embodiments of the present disclosure provide a time service method, a terminal device, and a network device. The method includes: determining, by a terminal device, a first moment of a first downlink message, and determining a second moment of the first downlink message; determining, by the terminal device, a third moment of a first uplink message, and determining a fourth moment of the first uplink message; and determining, by the terminal device, a time offset between the terminal device and the network device based on the first moment, the second moment, the third moment, and the fourth moment. According to the method provided, a time service error is effectively reduced.
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公开(公告)号：US10805890B2
公开(公告)日：2020-10-13
申请号：US16444859
申请日：2019-06-18
发明人： Kun Yang , Ronghui Wen , Guangwei Yu , Wurong Zhang
摘要： Embodiments of this application provide a synchronization signal sending method and apparatus. The method includes: obtaining an initial synchronization sequence, where a spectrum width corresponding to the initial synchronization sequence is greater than a bandwidth of a synchronization channel and is less than a sum of the bandwidth of the synchronization channel and a system protection bandwidth; dividing the initial synchronization sequence into N sub-synchronization sequences; carrying the N sub-synchronization sequences on N time-domain symbols; and sending the N time-domain symbols to a receiving apparatus. According to the synchronization signal sending method provided in the embodiments of this application, a bandwidth loss of a synchronization signal is reduced, and utilization and synchronization performance of a system synchronization bandwidth are improved.
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5.发明授权公开(公告)号：US10736089B2
公开(公告)日：2020-08-04
申请号：US15796031
申请日：2017-10-27
发明人： Song Zhu , Zhe Chen , Guangwei Yu
摘要： A downlink information receiving method and sending method, user equipment, and a network device, where a first user equipment first receives a first data packet, and the first user equipment determines whether the first data packet carries identity-related information of the first user equipment. If the first data packet does not carry identity-related information of the first user equipment, the first user equipment does not need to receive a second data packet.
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公开(公告)号：US10574289B2
公开(公告)日：2020-02-25
申请号：US16422453
申请日：2019-05-24
发明人： Zheng Li , Yanfei Zhang , Guangwei Yu
摘要： A method includes: receiving, by a terminal device, a plurality of virtual channel indexes from a base station; selecting, by the terminal device, a virtual channel index from the plurality of virtual channel indexes; determining, by the terminal device based on the virtual channel index, physical channels corresponding to the virtual channel index on a plurality of subframes, where at least two of the physical channels corresponding to the virtual channel index on the plurality of subframes are different; and communicating, by the terminal device on at least one of the plurality of subframes, with the base station using the physical channel corresponding to the virtual channel index.
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公开(公告)号：US20200280943A1
公开(公告)日：2020-09-03
申请号：US16874746
申请日：2020-05-15
发明人： Feng Yu , Haifeng Yu , Bo Lin , Guangwei Yu , Feng Gao
摘要： A time synchronization method and an apparatus are disclosed. The method includes: receiving, by a terminal device, a first time sent by an access network device; obtaining a first transmission delay; obtaining a fourth time based on the first transmission delay and the first time; and synchronizing a time of the terminal device based on the fourth time.
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8.发明授权公开(公告)号：US10693624B2
公开(公告)日：2020-06-23
申请号：US15967371
申请日：2018-04-30
发明人： Tong Ji , Yiling Wu , Guangwei Yu , Robert William Young , Brian Martin Gaffney
摘要： The present invention relates to the field of wireless communications technologies. In a receiving device, a receiving module receives a synchronization signal including a first signal and a second signal. The first signal includes N1 generalized ZC sequences, and the second signal includes N2 generalized ZC sequences. The second signal is used to distinguish different cells or different cell groups. There are at least two generalized ZC sequences with different root indexes in (N1+N2) generalized ZC sequences. A processing module performs a first sliding correlation operation and a second sliding correlation operation on the synchronization signal, and performs symbol timing synchronization according to a relationship between a sliding correlation peak generated when a sliding correlation is performed on the N1 generalized ZC sequences and a sliding correlation peak generated when a sliding correlation is performed on the N2 generalized ZC sequences.
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公开(公告)号：US20190230552A1
公开(公告)日：2019-07-25
申请号：US16369192
申请日：2019-03-29
发明人： Feng Yu , Haifeng Yu , Xin Xiong , Guangwei Yu
摘要： A buffer status report processing method and an apparatus are disclosed. A network device determines a logical channel or a logical channel group for which a separate buffer status report BSR needs to be reported, and sends separate-BSR reporting indication information. A terminal device receives the separate-BSR reporting indication information sent by the network device, and reports the separate BSR for the logical channel or the logical channel group indicated in the separate-BSR reporting indication information. The network device receives the separate BSR reported by the terminal device, and determines, based on the separate BSR, uplink buffer data amount information corresponding to the logical channel or the logical channel group. According to the BSR processing method, resource scheduling accuracy of the network device is improved.
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公开(公告)号：US10194420B2
公开(公告)日：2019-01-29
申请号：US14991694
申请日：2016-01-08
发明人： Weiliang Zhang , Guangwei Yu , Zhijun Li , Yiling Wu , Jianbing Yang
摘要： Embodiments of the disclosure provide a communication method and an apparatus thereof. The method includes: generating a first signal; and sending the first signal to a receiver over a first channel, where the first channel is one of multiple channels in a first band for narrowband communication, and at least a part of the first band is located in a guard band of a radio access network RAN. In the embodiments of the disclosure, a spectrum resource of a guard band of a RAN is used to establish a spectrum resource applicable to narrowband communication, thus improving spectrum utilization.
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