公开(公告)号：US20210212013A1

公开(公告)日：2021-07-08

申请号：US17209655

申请日：2021-03-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei CHEN ,  Bingzhao LI ,  Bin XU ,  Xuelong WANG

IPC: H04W64/00 ,  H04W52/02

Abstract: A communications method and apparatus that relate to the field of communications technologies, to resolve a problem that a terminal frequently performs TAU because a TAU mechanism of a conventional cellular network is directly used in a non-terrestrial network, thereby increasing energy consumption of the terminal. The method includes: receiving, by a terminal device, tracking area information from an access network device, and determining, based on a second tracking area identity, whether to perform the TAU. The tracking area information includes a first tracking area identity and a second tracking area identity, where the first tracking area identity is a tracking area identity of a first cell, and the second tracking area identity is used by the terminal device to perform the tracking area update TAU. The method is used in a location management process of the terminal.

公开(公告)号：US20250031276A1

公开(公告)日：2025-01-23

申请号：US18908136

申请日：2024-10-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haisen ZHANG ,  Bingzhao LI ,  Bin XU

IPC: H04W76/40 ,  H04W24/02 ,  H04W72/30

Abstract: A terminal device receives a SIB of a SCell, where the SIB includes information used for obtaining an MCCH configuration of an MBS; and sends an MII message, where the MII message carries an identifier of an MBS service of interest to the terminal device. In this way, in some embodiments, for example, in a scenario in which the secondary cell can provide a broadcast service, the terminal device may report, based on the received SIB of the SCell, the identifier of the MBS service of interest to the terminal device.

公开(公告)号：US20240365435A1

公开(公告)日：2024-10-31

申请号：US18767078

申请日：2024-07-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haisen ZHANG ,  Bingzhao LI ,  Bin XU

IPC: H04W76/40 ,  H04W36/08 ,  H04W76/19

CPC classification number: H04W76/40 ,  H04W36/08 ,  H04W76/19

Abstract: This application provides a communication method and an apparatus. The method is applied to a terminal device. The terminal device includes a first multicast radio bearer MRB, the first MRB includes a first packet data convergence protocol PDCP entity and a first RLC entity, and the first RLC entity uses an acknowledged mode AM. The method includes: The terminal device receives first indication information sent by a source node, where the first indication information indicates to adjust a receive window of the first PDCP entity when the first PDCP entity is re-established; and the terminal device adjusts the receive window of the first PDCP entity based on the first indication information.

公开(公告)号：US20240276415A1

公开(公告)日：2024-08-15

申请号：US18642063

申请日：2024-04-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin XU ,  Bingzhao LI

IPC: H04W56/00

CPC classification number: H04W56/0045 ,  H04W56/0005

Abstract: Embodiments of this application disclose an uplink synchronization adjustment method, a related device, and a system. The method may include: A terminal device determines a timing advance TA, and reports the TA to an access network device; and the access network device completes uplink synchronization adjustment after receiving the TA. A trigger condition may be defined for TA reporting of the terminal device, or a resource to be used for TA reporting may be configured, or behavior changes of the terminal device and the access network device after the TA is reported may be set. In embodiments of this application, the terminal device determines and reports the TA.

公开(公告)号：US20240188104A1

公开(公告)日：2024-06-06

申请号：US18432194

申请日：2024-02-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haisen ZHANG ,  Bin XU ,  Bingzhao LI ,  Lei CHEN

IPC: H04W72/30 ,  H04L12/18 ,  H04W72/121 ,  H04W76/20

CPC classification number: H04W72/30 ,  H04L12/185 ,  H04L12/1881 ,  H04W72/121 ,  H04W76/20

Abstract: A communication method includes: obtaining first information from a first core network device, where the first information is used to request to add a first terminal device to a multicast service session corresponding to a first multicast service; and adding the first terminal device to a multicast service session corresponding to a second multicast service when a first condition is met, where the first condition includes that the first multicast service and the second multicast service are a same multicast service, and the second multicast service is provided by a second core network device. The first terminal device is added to the multicast service session corresponding to the second multicast service, so that service data of the second multicast service can be simultaneously provided for terminal devices in two networks by using an established resource related to the second multicast service.

公开(公告)号：US20240179529A1

公开(公告)日：2024-05-30

申请号：US18433148

申请日：2024-02-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hongyu XIANG ,  Lei CHEN ,  Bin XU ,  Bingzhao LI

IPC: H04W12/106 ,  H04W76/19 ,  H04W76/20 ,  H04W76/40

CPC classification number: H04W12/106 ,  H04W76/19 ,  H04W76/20 ,  H04W76/40

Abstract: Examples of message transmission methods and apparatus are described. In one example, a message transmission method includes that a first network device receives a first message from a terminal device, where the first message includes a resume cause value and an integrity check code. The integrity check code is generated based on the resume cause value, the terminal device is in an inactive state, and the resume cause value is a resume cause indicated by a higher layer or a radio resource control (RRC) layer. The first network device sends a second message to a second network device, where the second message includes the resume cause value and the integrity check code. The second network device is a network device that stores a context of the terminal device.

公开(公告)号：US20230092744A1

公开(公告)日：2023-03-23

申请号：US17994050

申请日：2022-11-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin XU ,  Bingzhao LI ,  Lei CHEN

IPC: H04W36/00 ,  H04W12/47

Abstract: In a key obtaining method and an apparatus, a first core network device obtains a first key, and the first core network device performs derivation based on the first key to obtain a second key and a third key. The second key is for performing security processing on control plane signaling of a terminal device, and the third key is for performing security processing on user plane data of the terminal device. The first core network device sends the second key to a control plane entity of a first access network device, and sends the third key to a user plane entity of the first access network device.

公开(公告)号：US20230012998A1

公开(公告)日：2023-01-19

申请号：US17947651

申请日：2022-09-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin XU ,  Bingzhao LI

IPC: H04L1/16 ,  H04W76/19 ,  H04W36/08

Abstract: A communication method, an access network device, a terminal device, and a core network device where the terminal device is handed over from a first access network device to a second access network device, the second access network device learns of first service progress of the first access network device based on a first sequence number of a data packet forwarded by the first access network device, without introducing additional progress exchange information between the two access network devices.

公开(公告)号：US20220248192A1

公开(公告)日：2022-08-04

申请号：US17724999

申请日：2022-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hong WANG ,  Bingzhao LI ,  Bin XU ,  Lei CHEN ,  Xuelong WANG

IPC: H04W4/18 ,  H04W4/06

Abstract: This application provides a communication method, apparatus, and system. The communication method includes: a centralized unit receives a data packet sent in a multicast manner. The centralized unit generates a PDCP data unit based on the data packet, where the PDCP data unit includes the data packet and a PDCP header. The centralized unit sends the PDCP data unit to a distributed unit. The distributed unit receives the PDCP data unit from the centralized unit, where the PDCP data unit includes the PDCP header, a synchronization protocol header, and a payload. The distributed unit generates a MAC data unit, where the MAC data unit includes a MAC header, an RLC header, the PDCP header, and the payload.

公开(公告)号：US20210219174A1

公开(公告)日：2021-07-15

申请号：US17214453

申请日：2021-03-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin XU ,  Bingzhao LI ,  Lei CHEN ,  Xuelong WANG

IPC: H04W28/06

Abstract: A communication method and a device are described to compress and decompress a data packet including an ethernet header to reduce radio transmission resources of an air interface. The communication method includes determining, by a sending device, a to-be-sent data packet. The to-be-sent data packet is a data packet including an ethernet header. The method further includes determining, by the sending device, a field to be compressed in the header of the to-be-sent data packet; and compressing, by the sending device, the header of the to-be-sent data packet according to a preset method. The preset method includes: removing the field to be compressed from the header of the data packet, or replacing the field to be compressed with a corresponding short field; and sending, by the sending device, a data packet obtained after the compressing.