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公开(公告)号：US20220124662A1
公开(公告)日：2022-04-21
申请号：US17566754
申请日：2021-12-31
发明人： Xian MENG , Yu WANG , Meixin LIN , Yunfei QIAO
摘要： Embodiments of this application disclose a communication method. The method includes: A terminal device sends a first message to a network device, where the first message includes one or more listening frequency indexes of one or more first tracking areas that are listened to by the terminal device within a first preset time period. The terminal device receives a second message including first registration area information from the network device. The first registration area information is determined based on the one or more listening frequency indexes. In the embodiments of this application, the accuracy of registration area information obtained by the terminal device can be improved, avoiding waste of communication resources caused by inaccurate registration area information received by the terminal device and improving communication resource utilization and practicality of the communication network.
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公开(公告)号：US20220190965A1
公开(公告)日：2022-06-16
申请号：US17687892
申请日：2022-03-07
发明人： Meixin LIN , Xian MENG , Yunfei QIAO , Dali QIN
摘要： A media access control element (MAC CE) indicates a terminal device to enable or disable at least one hybrid automatic repeat request (HARQ) process, or the MAC CE requests a network device to enable or disable the at least one HARQ process. This provides a solution for dynamically controlling a HARQ function.
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公开(公告)号：US20190165807A1
公开(公告)日：2019-05-30
申请号：US16264014
申请日：2019-01-31
发明人： Jun WANG , Rong LI , Huazi ZHANG , Xian MENG , Xiaocheng LIU
摘要： The present disclosure relates to decoding methods and devices. One example method includes receiving N LLRs corresponding to a to-be-decoded signal, where N is a code length, classifying K decoded bits into reliable bits and unreliable bits based on at least one of a prior LLR or a posterior LLR, generating M decoding paths based on the N LLRs and a preset rule, and selecting each stage of target decoding path based on PM values of the M decoding paths to obtain a decoding result of each stage of decoded bit.
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公开(公告)号：US20220217591A1
公开(公告)日：2022-07-07
申请号：US17704378
申请日：2022-03-25
发明人： Xian MENG , Meixin LIN , Yunfei QIAO , Yu WANG
摘要： Embodiments of this application relate to a cell handover method and apparatus, to determine a suitable access cell for a terminal in a cell handover process. The cell handover method is: A satellite receives a random access preamble that is of a first cell and that is sent by a terminal, where the random access preamble is used to determine terminal information used for cell handover; the satellite determines, based on the terminal information and cell attribute information that is of the satellite, a second cell most suitable for the terminal to access; and the satellite sends access information of the second cell to the terminal.
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公开(公告)号：US20220116844A1
公开(公告)日：2022-04-14
申请号：US17559264
申请日：2021-12-22
发明人： Yunfei QIAO , Meixin LIN , Xian MENG , Yu WANG
摘要： A method for selecting a cell in a non-terrestrial network (NTN) The method includes user equipment queries whether there is first prestored information and determines a frequency for preferential searching based on the first prestored information. The user equipment then determines values of a first decision factor, a second decision factor, a first weighting coefficient, and a second weighting coefficient in a first decision criterion. The user equipment searches for a cell according to the determined first decision criterion and selects a cell with the largest value of the first decision criterion is largest to camp.
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公开(公告)号：US20210376919A1
公开(公告)日：2021-12-02
申请号：US17403953
申请日：2021-08-17
发明人： Meixin LIN , Yunfei QIAO , Xian MENG , Dali QIN
摘要： A satellite communication method and a network device are disclosed. A first network device learns of traffics of a plurality of satellite communications link or air interface resources allocated to a plurality of satellite base stations. The first network device sends identification information to a second network device, where the identification information indicates that a traffic of a satellite communications link reaches a specified threshold, or that an air interface resource allocated by a ground station to a satellite base station reaches a specified threshold. The second network device receives an identifier message, determines a to-be-linked satellite base station that has an idle resource, and sends, to the to-be-linked satellite base station, a second message including information about a generated beam of the to-be-linked satellite base station.
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公开(公告)号：US20220217607A1
公开(公告)日：2022-07-07
申请号：US17609326
申请日：2020-03-10
发明人： Meixin LIN , Yunfei QIAO , Xian MENG , Jun WANG
摘要： This application provides a handover method and apparatus in satellite communications. The handover method in satellite communications in this application includes: obtaining, by a terminal device, ephemeris information of first satellite base stations, where the first satellite base stations are satellite base stations that cover the terminal device; determining, by the terminal device based on the ephemeris information, a destination satellite base station to which the terminal device needs to hand over; determining, by the terminal device based on the determined destination satellite base station, a first time at which the terminal device is to hand over to the destination satellite base station; and handing over, by the terminal device based on the determined first time, to a destination cell served by the destination satellite base station. This application reduces power consumption of the terminal device, saves air interface resources, and further avoids a signaling storm caused because a large quantity of terminal devices report measurement information at the same moment, thereby increasing a handover success rate.
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公开(公告)号：US20220209859A1
公开(公告)日：2022-06-30
申请号：US17502353
申请日：2021-10-15
发明人： Meixin LIN , Xueqiang YAN , Xian MENG , Yunfei QIAO
摘要： This application provides a data packet processing method and apparatus, applied to a satellite communications system. An earth surface, space, and network space are divided based on a satellite constellation and an ephemeris of a satellite, and an identifier is allocated to each ground area, each space area, and each network that are sub-divisions of the earth surface, space and network space, to establish a fixed mapping relationship between the EID, the SID, and the NID. In addition, each satellite maintains mapping relationship information recording the mapping relationship. Unless a satellite joins the constellation or one satellite leave service, the mapping relationship recorded in the mapping relationship information does not need to be updated. Based on the mapping relationship information, a satellite may route a data packet, thereby reducing a large amount of signaling interaction caused by establishing and maintaining a routing table in the conventional manner.
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公开(公告)号：US20220190910A1
公开(公告)日：2022-06-16
申请号：US17684730
申请日：2022-03-02
发明人： Yu WANG , Yunfei QIAO , Hejia LUO , Xian MENG
摘要： This application relates to the field of communication technologies, and discloses a communication method and a communication apparatus, to resolve a problem of a poor interference suppression effect caused by closing an edge beam of a satellite. The method includes: A first satellite sends a first message to a second satellite. The first message includes information about a frequency reuse scheme. The information about the frequency reuse scheme includes basic unit information. The basic unit information includes central point locations and frequency information of at least N−1 beams. Herein, N is a frequency reuse factor of the first satellite. At least N−1 different pieces of frequency information exist in the frequency information that is of the at least N−1 beams and that is included in the basic unit information. In addition, N is a positive integer greater than or equal to 3.
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公开(公告)号：US20220086711A1
公开(公告)日：2022-03-17
申请号：US17536265
申请日：2021-11-29
发明人： Yu WANG , Rong LI , Xian MENG , Yunfei QIAO
摘要： Embodiments of this application provide a cell handover method and apparatus. A first network device of a first cell obtains user information of a terminal device, and then the first network device may determine handover information based on the user information and running information of the first network device, so that after the first network device sends an RRC message including the handover information to the terminal device, the terminal device may perform N consecutive cell handovers based on the handover information. In the N cell handovers, the first network device only needs to obtain the user information once, to configure handover conditions for the N subsequent handovers in advance at a time. This simplifies a network signaling procedure, reduces network overheads, and reduces handover response time. The embodiments of this application are applicable to a network handover in a satellite scenario.
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