-
公开(公告)号：US20240291557A1
公开(公告)日：2024-08-29
申请号：US18649666
申请日：2024-04-29
发明人： Ying CHEN , Feiran ZHAO , Ruonan YANG , Jun WANG , Jianwei ZHOU
IPC分类号： H04B7/185
CPC分类号： H04B7/18539 , H04B7/1855 , H04B7/18589
摘要： A terminal device receives first information, where the first information is for determining first duration, the first duration indicates duration from a moment at which a first beam stops a service to a moment from which a second beam provides a service, and the first beam and the second beam are beams on satellites. The terminal device communicates with a network device by using the second beam based on the first duration.
-
公开(公告)号：US20230247576A1
公开(公告)日：2023-08-03
申请号：US18191591
申请日：2023-03-28
发明人： Hejia LUO , Xiaolu WANG , Jianwei ZHOU , Ying CHEN , Chenlei XU , Jun WANG
IPC分类号： H04W56/00 , H04W72/0453 , H04W72/1268
CPC分类号： H04W56/0035 , H04W72/0453 , H04W72/1268
摘要： Example frequency compensation methods and apparatus are described. One example method includes determining first information and sending the first information by a network device to a terminal device, where the first information indicates a frequency compensation manner of an uplink signal of the terminal device or the first information indicates a configuration parameter of the terminal device. The terminal device receives the first information, and determines, based on the first information, the frequency compensation manner to be used to send the uplink signal. The terminal device performs frequency compensation for the uplink signal based on the frequency compensation manner.
-
公开(公告)号：US20220330350A1
公开(公告)日：2022-10-13
申请号：US17832880
申请日：2022-06-06
发明人： Xiaolu WANG , Hejia LUO , Jianwei ZHOU , Chenlei XU , Bin WANG , Rong LI
摘要： The present disclosure relates to random access preamble transmission methods, apparatuses, and storage mediums. In one example method, a terminal device determines, based on a target sub-coverage area to which the terminal device belongs in a preset coverage area of a network device, target random access preamble format information corresponding to the target sub-coverage area. Then, the terminal device sends, to the network device on a target time-frequency resource indicated by target random access preamble time-frequency resource information corresponding to the target random access preamble format information, a random access preamble corresponding to the target random access preamble format information.
-
公开(公告)号：US20220225432A1
公开(公告)日：2022-07-14
申请号：US17706202
申请日：2022-03-28
发明人： Xiaolu WANG , Hejia LUO , Jianwei ZHOU , Chenlei XU
摘要： One example method includes that a terminal device determines first random access information associated with a first synchronization broadcast block and associated with a beam parameter of a satellite beam, where the beam parameter is used to distinguish the satellite beam. The terminal sends a preamble to a satellite based on the first random access information. The satellite receives the preamble from the terminal, and determines the first random access information. The satellite determines the first SSB and the beam parameter of the satellite beam that are associated with the first random access information.
-
公开(公告)号：US20220225424A1
公开(公告)日：2022-07-14
申请号：US17707299
申请日：2022-03-29
发明人： Xiaolu WANG , Hejia LUO , Chenlei XU , Jianwei ZHOU , Rong LI
IPC分类号： H04W74/08 , H04L43/0864 , H04W74/00
摘要： This disclosure provides data processing methods. One example including a network device obtains target information that includes a transmission delay difference corresponding to a target beam or a target cell; determines a first preamble format based on the transmission delay difference, and then determines first configuration information used to indicate the first preamble format and a first set of random access occasions included in a random access period, where an interval between random access times included in the first set of random access occasions is greater than or equal to a preamble length corresponding to the first preamble format; and generates a corresponding first configuration index based on the first configuration information. The preamble formats required for different beams or cells can be determined based on transmission delay differences corresponding to the different beams or cells, and then configuration information of a random access occasion is further determined.
-
公开(公告)号：US20220224463A1
公开(公告)日：2022-07-14
申请号：US17707815
申请日：2022-03-29
发明人： Chenlei XU , Hejia LUO , Jianwei ZHOU , Xiaolu WANG
摘要： Example satellite communication methods and example related devices are provided. One example satellite communication method includes generating a random access preamble sequence, where the random access preamble sequence includes a cyclic prefix, a sequence part, and a guard interval, the sequence part is obtained by performing frequency domain resource mapping and time-frequency transformation on a frequency domain sequence, and the frequency domain sequence is obtained based on a Zadoff-Chu (ZC) sequence and a mask sequence. The random access preamble sequence can then be output.
-
公开(公告)号：US20220224404A1
公开(公告)日：2022-07-14
申请号：US17707558
申请日：2022-03-29
发明人： Chenlei XU , Jianwei ZHOU , Hejia LUO , Xiaolu WANG
摘要： The disclosure provides satellite communication methods and related devices. One example method includes generating a random access preamble sequence which includes a cyclic prefix, a sequence part, and a guard interval. The sequence part includes a subsequence A and a subsequence B, or the sequence part includes a subsequence C, and the subsequence C is a time domain superimposed sequence of a subsequence A and a subsequence B. The subsequence A includes at least one preamble symbol, the subsequence B includes at least one preamble symbol, and the subsequence A and the subsequence B are respectively generated by using ZC sequences of different root indexes, a quantity of subsequences A is m, a quantity of subsequences B is m or m−1, and m is a positive integer. The method further includes outputting the random access preamble sequence.
-
公开(公告)号：US20220217033A1
公开(公告)日：2022-07-07
申请号：US17706291
申请日：2022-03-28
发明人： Jianwei ZHOU , Chenlei XU , Hejia LUO , Jun WANG
摘要： Example signal transmission methods based on satellite communication and apparatus are described. One example method includes obtaining, by a communication device, carrier attribute information corresponding to a target carrier used to transmit an orthogonal frequency division multiplexing (OFDM) symbol. The carrier attribute information of the target carrier includes subcarrier spacing. The communications device determines a cyclic prefix (CP) length of the OFDM symbol based on the carrier attribute information of the target carrier and a preset correspondence between carrier attribute information and the OFDM symbol. The CP is used to carry first data. The first data is data in the OFDM symbol.
-
公开(公告)号：US20210392597A1
公开(公告)日：2021-12-16
申请号：US17407526
申请日：2021-08-20
发明人： Chenlei XU , Jianwei ZHOU , Zhenjun JIANG , Hejia LUO
IPC分类号： H04W56/00
摘要： This application provides an example timing advance update method, an example terminal, and an example base station. One example method includes receiving, by a terminal, an updated timing advance TA value and a beam cell identity of a beam cell in which the terminal is located that are sent by a base station. The example method also includes obtaining, by the terminal, corresponding TA compensation information based on the beam cell identity. The example method further includes performing, by the terminal, TA compensation in a TA update period based on the updated TA value and the TA compensation information. The example method also includes sending, by the terminal, uplink data by using a TA value obtained after TA compensation is performed.
-
-
-
-
-
-
-
-
搜索结果
29 条记录 (耗时 0.023 秒)
