公开(公告)号：US20220124662A1

公开(公告)日：2022-04-21

申请号：US17566754

申请日：2021-12-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xian MENG ,  Yu WANG ,  Meixin LIN ,  Yunfei QIAO

IPC: H04W60/04 ,  H04W60/02 ,  H04W68/00

Abstract: 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.

公开(公告)号：US20220190965A1

公开(公告)日：2022-06-16

申请号：US17687892

申请日：2022-03-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meixin LIN ,  Xian MENG ,  Yunfei QIAO ,  Dali QIN

IPC: H04L1/18 ,  H04L1/00

Abstract: 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.

公开(公告)号：US20190159262A1

公开(公告)日：2019-05-23

申请号：US16258097

申请日：2019-01-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guijie WANG ,  Jian WANG ,  Meixin LIN

IPC: H04W74/08 ,  H04L1/00 ,  H04W72/04 ,  H04W88/02

Abstract: This application provides a preamble sequence configuration method, user equipment, and an access network device. The method in embodiments of this application includes: determining, by an access network device, preamble sequence information, where the preamble sequence information includes a message indicating a quantity of preamble sequences; and sending, by the access network device, the preamble sequence information to user equipment, where the preamble sequence information is used by the user equipment for random access.

公开(公告)号：US20220217607A1

公开(公告)日：2022-07-07

申请号：US17609326

申请日：2020-03-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Meixin LIN ,  Yunfei QIAO ,  Xian MENG ,  Jun WANG

IPC: H04W36/32 ,  H04W36/08 ,  G01S19/25

Abstract: 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.

公开(公告)号：US20220209859A1

公开(公告)日：2022-06-30

申请号：US17502353

申请日：2021-10-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meixin LIN ,  Xueqiang YAN ,  Xian MENG ,  Yunfei QIAO

IPC: H04B7/185 ,  H04W40/02 ,  H04W8/26 ,  H04W40/24

Abstract: 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.

公开(公告)号：US20220217591A1

公开(公告)日：2022-07-07

申请号：US17704378

申请日：2022-03-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xian MENG ,  Meixin LIN ,  Yunfei QIAO ,  Yu WANG

IPC: H04W36/00 ,  H04W56/00

Abstract: 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.

公开(公告)号：US20220116844A1

公开(公告)日：2022-04-14

申请号：US17559264

申请日：2021-12-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yunfei QIAO ,  Meixin LIN ,  Xian MENG ,  Yu WANG

IPC: H04W36/30 ,  H04W36/00

Abstract: 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.

公开(公告)号：US20210376919A1

公开(公告)日：2021-12-02

申请号：US17403953

申请日：2021-08-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meixin LIN ,  Yunfei QIAO ,  Xian MENG ,  Dali QIN

IPC: H04B7/185 ,  H04B7/204 ,  H04W28/02

Abstract: 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.

公开(公告)号：US20220124581A1

公开(公告)日：2022-04-21

申请号：US17564643

申请日：2021-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yu WANG ,  Xian MENG ,  Meixin LIN ,  Yunfei QIAO ,  Yinggang DU

IPC: H04W36/00 ,  H04B7/185

Abstract: Satellite cell reselection control methods and related devices are provided. One satellite cell reselection control method includes: determining a current location status of the user equipment; determining a satellite cell reselection control parameter set corresponding to the current location status; and the performing satellite cell reselection control of the user equipment based on the obtained satellite cell reselection control parameter set.

公开(公告)号：US20220095179A1

公开(公告)日：2022-03-24

申请号：US17543110

申请日：2021-12-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yunfei QIAO ,  Meixin LIN ,  Xian MENG

IPC: H04W36/00 ,  H04B7/185

Abstract: A handover method and apparatus are disclosed. In some implementations, the method includes: determining a part of terminal devices to be handed over in a plurality of terminal devices in a staring area of a first beam; sending a first handover request message to a target satellite, where the first handover request message includes contexts of the part of terminal devices; and receiving a handover instruction sent by the target satellite based on the first handover request message, and sending the handover instruction to the part of terminal devices by using the first beam. The handover instruction includes handover parameters used for handing over the part of terminal devices. According to some implementations, the part of terminal devices in the plurality of terminal devices in the staring area may be handed over, so that a signaling storm can be avoided and communication performance can be improved.