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公开(公告)号：US20240137111A1
公开(公告)日：2024-04-25
申请号：US18400101
申请日：2023-12-29
发明人： Jingwei Zhang , Tianhang Yu , Hejia Luo , Shengchen Dai , Yunfei Qiao , Rong Li , Jun Wang
IPC分类号： H04B7/185
CPC分类号： H04B7/18532
摘要： This application discloses a NB-IoT-based communication method and an apparatus, to evolve a NB-IoT communication technology into an NTN. The method is as follows: A terminal device generates an uplink signal, including a superframe which includes a synchronization sequence located in first duration of the superframe and a data frame located in second duration which is after the first duration, the synchronization sequence successively includes a first sequence repeated Ni times and a second sequence repeated N2 times, the second sequence is obtained by multiplying the first sequence by −1, a part of consecutive sequences of the synchronization sequence are used as a first synchronization reference sequence that is obtained based on the second sequence repeated N2 times and one or more first sequences that are sorted from back to front in the first sequence repeated N1 times. The terminal device sends the uplink signal to a network device.
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2.发明申请公开(公告)号：US20210289339A1
公开(公告)日：2021-09-16
申请号：US17332699
申请日：2021-05-27
发明人： Tianhang Yu , Rong Li
IPC分类号： H04W8/08
摘要： A tracking area (TA) update method, a broadcast message transmission method, and a communications apparatus, where the tracking area update method includes: receiving a broadcast message periodically sent by a satellite device, where the broadcast message alternately carries tracking area codes (TACs) corresponding to one or more TAs of at least two TAs, and where coverage of a beam of the satellite device belongs to the at least two TAs; when detecting for the first time that a TA corresponding to a TAC in a broadcast message received in a current period does not belong to a first TA list, recording the TA in a second TA list; continuing detecting a subsequent broadcast message; and determining, based on a TAC in the subsequent broadcast message, whether to initiate a TA update procedure.
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公开(公告)号：US20240235662A9
公开(公告)日：2024-07-11
申请号：US18400101
申请日：2023-12-29
发明人： Jingwei Zhang , Tianhang Yu , Hejia Luo , Shengchen Dai , Yunfei Qiao , Rong Li , Jun Wang
IPC分类号： H04B7/185
CPC分类号： H04B7/18532
摘要： This application discloses a NB-IoT-based communication method and an apparatus, to evolve a NB-IoT communication technology into an NTN. The method is as follows: A terminal device generates an uplink signal, including a superframe which includes a synchronization sequence located in first duration of the superframe and a data frame located in second duration which is after the first duration, the synchronization sequence successively includes a first sequence repeated Ni times and a second sequence repeated N2 times, the second sequence is obtained by multiplying the first sequence by −1, a part of consecutive sequences of the synchronization sequence are used as a first synchronization reference sequence that is obtained based on the second sequence repeated N2 times and one or more first sequences that are sorted from back to front in the first sequence repeated N1 times. The terminal device sends the uplink signal to a network device.
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公开(公告)号：US11637569B2
公开(公告)日：2023-04-25
申请号：US17378140
申请日：2021-07-16
发明人： Tianhang Yu , Gongzheng Zhang , Rong Li , Zhaoyang Zhang
摘要： This application provides a polar coding method, a polar decoding method, and an apparatus. A transmit end obtains K to-be-coded bits and an index set including K polar channels, where a value set of K1 indexes in the set of the K indexes or a value set of K2 indexes in the set of the K indexes is determined based on a value set of K2 of the K to-be-coded bits, and the value set of the K1 indexes and the value set of the K2 indexes are complementary sets of each other; and performs polar coding on K1 to-be-coded bits. In comparison with a conventional polar coding method and a conventional polar decoding method, the polar coding method and the polar decoding method provided in this application can achieve an effect of reducing a bit rate. A simulation result indicates that the method has better performance.
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公开(公告)号：US20240323822A1
公开(公告)日：2024-09-26
申请号：US18732331
申请日：2024-06-03
发明人： Tianhang Yu , Yunfei Qiao , Rong Li , Jun Wang
CPC分类号： H04W48/16 , H04L5/0048 , H04L5/0098 , H04W48/10
摘要： The present disclosure relates to the communication field and discloses beacon sending and receiving methods and corresponding apparatuses for reducing hardware overheads and weights of a network device such as a satellite or a high-altitude platform and a terminal device such as a ground station. A method is provided that includes determining one or more subcarriers that are in a first frequency band, the first frequency band being one of N frequency bands included in a first beacon resource of the first send node, N being an integer greater than or equal to 1. The first send node sends a beacon signal on the one or more subcarriers. Correspondingly, a first receive node receives the beacon signal on the one or more subcarriers. The first receive node parses the beacon signal.
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公开(公告)号：US20220085914A1
公开(公告)日：2022-03-17
申请号：US17535532
申请日：2021-11-24
发明人： Tianhang Yu , Gongzheng Zhang , Rong Li
IPC分类号： H04L1/00
摘要： Embodiments of this application provide a coding and modulation method, a demodulation and decoding method, an apparatus, and a device. The coding and modulation method includes obtaining K to-be-encoded bits and a modulation scheme, and coding the K to-be-encoded bits, based on M bit levels of the modulation scheme, to obtain M′ code blocks, where M′
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公开(公告)号：US20240259977A1
公开(公告)日：2024-08-01
申请号：US18618631
申请日：2024-03-27
发明人： Tianhang Yu , Hejia Luo , Rong Li , Jun Wang
CPC分类号： H04W56/0045 , H04L1/0007 , H04L27/2605 , H04W84/06
摘要： A first communication device receives a first signal from a second communication device, where a first band used for communication between the first communication device and a third communication device overlaps a second band used for communication between the second communication device and a fourth communication device. The first communication device adjusts a start moment of a first transmission frame of the first communication device or an end moment of the first transmission frame based on the first signal.
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公开(公告)号：US12028104B2
公开(公告)日：2024-07-02
申请号：US17540832
申请日：2021-12-02
发明人： Tianhang Yu , Gongzheng Zhang , Rong Li , Chuili Kong , Yue Zhou , Jun Wang
CPC分类号： H04B1/44 , H01Q7/00 , H04B15/00 , H04L5/1461
摘要： Embodiments of this application provide example transceiver devices and example transceiver apparatuses used in the example transceiver devices. One example transceiver apparatus includes a transmit antenna and a receive antenna. The transmit antenna is configured to send a local signal to a receive antenna of a peer end. The receive antenna is configured to receive a signal transmitted by a transmit antenna of the peer end. The transmit antenna is on an interference cancellation plane of the receive antenna. The receive antenna is on an interference cancellation plane of the transmit antenna. An interference signal generated by the transmit antenna is canceled on the interference cancellation plane of the receive antenna or the interference cancellation plane of the transmit antenna.
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公开(公告)号：US12009920B2
公开(公告)日：2024-06-11
申请号：US17562743
申请日：2021-12-27
发明人： Zhaoyang Zhang , Yunmei Zhang , Deng Zheng , Kangjian Qin , Tianhang Yu
IPC分类号： H03M13/29 , H03M13/00 , H03M13/11 , H04L1/00 , H04L1/1812
CPC分类号： H04L1/0057 , H04L1/1812
摘要： This application discloses a polar code retransmission method and apparatus, to achieve an encoding gain. The method includes: when decoding of the first code word fails, performing polar code encoding on K first to-be-encoded bits and K′ second to-be-encoded bits based on a second information bit position set to obtain a second code word, where elements in the second information bit position set are used to indicate positions of the to-be-encoded bits, and an element that is in the second information bit position set and that is used to indicate a position of a first to-be-encoded bit is a sum of N and an element that is in the first information bit position set and that is used to indicate the position of the first to-be-encoded bit; and sending a subcode in the second code word other than the first code word to the decoding device.
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公开(公告)号：US20230336436A1
公开(公告)日：2023-10-19
申请号：US18331929
申请日：2023-06-08
发明人： Zhaoyang Zhang , Zhongyu Wang , Tianhang Yu , Jian Wang
CPC分类号： H04L41/16 , H04L47/82 , H04L41/145
摘要： This application provides a method for federated learning. A communication apparatus triggers, by setting a threshold (a time threshold and/or a count threshold), fusion of a local model sent by a terminal device, to generate a global model, and when a fusion weight of the local model is designed, a data feature included in the local model of the terminal device, a lag degree, and a utilization degree of a data feature of a sample set of the corresponding terminal device are comprehensively considered, so that a problem of low training efficiency caused by a synchronization requirement for model uploading versions in a synchronous system can be avoided, and a problem of unstable convergence and a poor generalization capability caused by an “update upon reception” principle of an asynchronous system can be avoided.
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