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公开(公告)号：EP4439995A1
公开(公告)日：2024-10-02
申请号：EP22909680.5
申请日：2022-11-29
发明人： WANG, Xiaolu , LUO, Hejia , WANG, Jun , WANG, Yu , LI, Rong
IPC分类号： H04B7/06
摘要： This application provides a satellite communication method and apparatus. The method includes: A second communication apparatus sends a configuration message. A first communication apparatus obtains the configuration message. The configuration message includes BH information corresponding to a first BWP. Therefore, the first communication apparatus performs communication based on the BH information corresponding to the first BWP, or the second communication apparatus performs communication based on the BH information corresponding to the first BWP. According to the method provided in this application, a beam hopping communication mechanism in satellite communication can be effectively improved.
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公开(公告)号：EP4422326A1
公开(公告)日：2024-08-28
申请号：EP22891719.1
申请日：2022-10-12
发明人： WANG, Xiaolu , LUO, Hejia , WANG, Jun , LI, Rong
摘要： This application provides a communication method and a communication apparatus, so that a network device distinguishes between terminal devices in different communication areas based on time domain positions carrying random access preambles, to improve communication efficiency. In the method, a terminal device obtains a first SSB. The terminal device sends a random access preamble corresponding to the first SSB. The random access preamble is carried at a first time domain position. The first time domain position is associated with a timing offset value. The timing offset value is determined based on a round-trip delay between the network device and a first position in an area covered by the network device.
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公开(公告)号：EP4307821A1
公开(公告)日：2024-01-17
申请号：EP22783904.0
申请日：2022-03-28
发明人： CHEN, Ying , QIAO, Yunfei , ZHOU, Jianwei , WANG, Xiaolu , WANG, Jun
IPC分类号： H04W74/08
摘要： This application provides a communication parameter indication method and apparatus, to resolve a problem that terrestrial network related communication parameters do not adapt to non-terrestrial network communication. The method includes: obtaining first information, where the first information requests a first parameter of a terminal device, and the first parameter includes at least one of the following: location information of the terminal device and a parameter related to a timing advance TA, where the parameter related to the TA is determined based on a round-trip transmission delay between a first reference point and the terminal device, or the parameter related to the TA is determined based on a round-trip transmission delay between a network device and the terminal device; sending second information based on the first information, where the second information indicates the first parameter; and obtaining third information, where the third information indicates a timing offset, the timing offset is for determining a scheduling delay degree of sending information by the terminal device, and the timing offset is related to at least one of a communication parameter corresponding to a cell in which the terminal device is located and the first parameter.
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公开(公告)号：EP4271088A1
公开(公告)日：2023-11-01
申请号：EP22739011.9
申请日：2022-01-11
发明人： WANG, Xiaolu , LUO, Hejia , DU, Yinggang , LI, Rong , WANG, Jun
摘要： Embodiments of this application provide a parameter transmission method and an apparatus, and relate to the field of wireless communication technologies, so that a terminal device determines a timing-related parameter. In the method, the terminal device may receive first information. The first information may include a time parameter. The time parameter may be used to determine a timing offset. The timing offset herein includes at least one of a first timing offset and a second timing offset. The first timing offset may be used to determine a delay degree of sending information by the terminal device, or the first timing offset may be used to determine an advance degree of receiving information by the terminal device, and the second timing offset may be used to determine a delay degree of taking effect of configuration information received by the terminal device.
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公开(公告)号：EP4171126A1
公开(公告)日：2023-04-26
申请号：EP21832348.3
申请日：2021-06-22
发明人： QIAO, Yunfei , WANG, Xiaolu , LI, Rong
摘要： Embodiments of this application provide a cell selection method and apparatus. The method includes: A communication apparatus obtains polarization priority information of one or more cells, performs cell measurement on the one or more cells based on the obtained polarization priority information when a cell measurement condition is met, and determines a cell to be camped on based on a measurement result of the one or more cells. In the technical solutions provided in this application, a polarization direction dimension is added during cell selection. This optimizes an existing cell selection policy, and can ensure that a terminal determines a more suitable cell to be camped on.
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公开(公告)号：EP4156820A1
公开(公告)日：2023-03-29
申请号：EP21821905.3
申请日：2021-06-11
发明人： WANG, Xiaolu , LUO, Hejia , QIAO, Yunfei , LI, Rong , WANG, Jun
摘要： This application relates to the non-terrestrial communication technologies, and discloses an information indication method and apparatus. The method includes: A first communication apparatus receives bandwidth part BWP configuration information, where the BWP configuration information indicates a correspondence between a plurality of pieces of first field information and a plurality of initial BWP configurations. After determining updated first field information, the apparatus determines an updated initial BWP configuration based on the updated first field information and the BWP configuration information. The updated first field information corresponds to the updated initial BWP configuration. After undergoing beam switching, the first communication apparatus cannot be successfully re-connected to a system if communication is interrupted.
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公开(公告)号：EP4123920A1
公开(公告)日：2023-01-25
申请号：EP21785273.0
申请日：2021-03-29
发明人： LUO, Hejia , WANG, Xiaolu , CHEN, Ying , ZHOU, Jianwei , DU, Yinggang
摘要： A communication method and apparatus are provided, and relate to the field of wireless communication technologies, to resolve a problem in a conventional technology that communication quality during communication between a satellite and a communication apparatus cannot be ensured, and to ensure security of high-accuracy location information of the satellite. In the method, the communication apparatus may perform random access to the satellite based on first location information. The communication apparatus may perform uplink communication with the satellite based on obtained second location information. Accuracy of a location obtained based on the second location information is higher than accuracy of a location obtained based on the first location information. Based on this solution, required accuracy of location information of the satellite is different. In different processes of communicating with the satellite, the communication apparatus can obtain the location information and motion information of the satellite with different accuracy, and communicate with the satellite. Communication quality during the uplink communication performed by the communication apparatus with the satellite can be met, and the security of the high-accuracy location information of the satellite can be improved.
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公开(公告)号：EP4117353A1
公开(公告)日：2023-01-11
申请号：EP21779991.5
申请日：2021-03-01
发明人： WANG, Xiaolu , LUO, Hejia , LI, Rong , WANG, Jun
IPC分类号： H04W56/00
摘要： This application discloses a method for determining a timing advance and a communication apparatus, to correctly determine a value of the timing advance in a scenario in which the timing advance is long. The method includes the following steps: A terminal receives a downlink signal from a network device; and determines a first reference moment of a signal period of the downlink signal, where the first reference moment may be a start receiving moment of the signal period. The terminal determines a first time interval between the start receiving moment and a start moment of a first period in which the terminal is located; determines, based on the first time interval, whether a start sending moment of the signal period is within the first period; and determines the start sending moment, where a period is a duration distributed at an equal interval on a time axis, and the first period is a duration. The terminal determines a timing advance based on the start receiving moment and the start sending moment; and sends an uplink signal to the network device based on the timing advance.
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公开(公告)号：EP4044762A1
公开(公告)日：2022-08-17
申请号：EP20885884.5
申请日：2020-11-09
发明人： WANG, Xiaolu , LUO, Hejia , XU, Chenlei , ZHOU, Jianwei , SHI, Xueliang
IPC分类号： H04W84/06
摘要： Embodiments of this application provide a satellite communication method and a related device. The satellite communication method includes: receiving a first common timing advance common TA parameter and a first common TA change amount calculation parameter, where the first common TA parameter is used to obtain a first common TA, and the first common TA change amount calculation parameter is used to update the first common TA to obtain an updated common TA; and sending a random access preamble by using the updated common TA. The solutions provided in the embodiments of this application help improve timeliness of the common TA used for sending the random access preamble, and further help reduce an occurrence probability of inter-symbol interference.
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公开(公告)号：EP4044454A1
公开(公告)日：2022-08-17
申请号：EP20885765.6
申请日：2020-10-12
发明人： ZHOU, Jianwei , LUO, Hejia , XU, Chenlei , WANG, Xiaolu , WANG, Jun
IPC分类号： H04B7/185
摘要： Embodiments of this application provide a network switching method and an apparatus. A beam that currently provides a service for a terminal device is a first beam. The first beam is generated by a first network device. The first network device obtains user information of the terminal device, and further the first network device can obtain switching information based on the user information and the like, so that after the first network device sends the switching information to the terminal device, the terminal device can perform beam switching based on the switching information. In this beam switching, procedures such as measurement, reporting the user information, and receiving switched beams allocated by the network device, as in the conventional technology do not need to be performed. Therefore, signaling procedures and overheads of the network can be reduced, so that a switching response time can be reduced.
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