RRC connection resume method and apparatus

    公开(公告)号:US11564099B2

    公开(公告)日:2023-01-24

    申请号:US16859699

    申请日:2020-04-27

    Abstract: This application provides an RRC connection resume method and apparatus. In the method, when a terminal moves to a target base station, the target base station may reselect, based on a capability and a requirement of the target base station, a first encryption algorithm and a first integrity protection algorithm that are used when the target base station communicates with the terminal, and send the first encryption algorithm and the first integrity protection algorithm to the terminal. On one hand, a security algorithm used for communication between the terminal and the target base station is flexibly selected. On the other hand, because the base station connected to the terminal changes, communication security can be improved by using a new encryption algorithm and integrity protection algorithm.

    Cell Reselection Method, Terminal Device, and Network Device

    公开(公告)号:US20220330133A1

    公开(公告)日:2022-10-13

    申请号:US17848781

    申请日:2022-06-24

    Abstract: This application provides a cell reselection method, a terminal device, and a network device. The terminal device may be a low-bandwidth terminal device, so that a time period for the terminal device to perform cell reselection is reduced, and power consumption of the terminal device is reduced. The method includes: The terminal device receives first indication information sent by the network device, where the first indication information indicates information about an initial bandwidth part of a first cell, the first cell is a neighboring cell of a second cell, and the second cell is a cell on which the terminal device currently camps. The terminal device determines, based on a type of the terminal device and the first indication information, whether to reselect to the first cell.

    Mobility management method, user equipment, and base station

    公开(公告)号:US11252558B2

    公开(公告)日:2022-02-15

    申请号:US16582941

    申请日:2019-09-25

    Abstract: A mobility management method, user equipment, and a network device are provided. The mobility management method includes: receiving, by user equipment UE in a connected state, a handover-free UE identifier from a network device, where the handover-free UE identifier is used to uniquely identify the UE in a handover-free state in a handover-free area, and the handover-free area includes at least two cells; entering, by the UE, the handover-free state after meeting an activation condition, where in the handover-free state, the UE stores the handover-free UE identifier and a connection context that is of the UE in the connected state, and the UE does not execute a handover procedure when the UE moves in the handover-free area; sending, by the UE, the handover-free UE identifier to the network device after the UE determines that a deactivation condition is met.

    Data Transmission Method and Apparatus

    公开(公告)号:US20220015152A1

    公开(公告)日:2022-01-13

    申请号:US17486186

    申请日:2021-09-27

    Abstract: A data transmission method and an apparatus, the method including sending, by an access network device, a paging message to a terminal device, where the paging message includes a first indication, receiving, by the access network device, a random access preamble from the terminal device, where the random access preamble corresponds to the first indication, and sending, by the access network device in response to the random access preamble, a response message to the terminal device, where the response message includes downlink data and one or more of a timing advance (TA), an uplink grant (UL-Grant), a temporary cell radio network temporary identity (TC-RNTI), a logical channel identifier (LCID), or a downlink assignment (DL-assignment).

    System information transmission method and apparatus

    公开(公告)号:US11191010B2

    公开(公告)日:2021-11-30

    申请号:US16793596

    申请日:2020-02-18

    Abstract: The present disclosure relates to system information transmission methods and apparatus. One example method includes receiving, by a first network node, at least one type of system information (SI) from a second network node, where the at least one type of SI includes first SI, receiving, by the first network node, a request message from a terminal device, where the request message is used to request the first SI, and sending, by the first network node, the first SI to the terminal device based on the request message and the at least one type of SI.

    Data transmission method, apparatus, and system, and device

    公开(公告)号:US10959129B2

    公开(公告)日:2021-03-23

    申请号:US16674843

    申请日:2019-11-05

    Abstract: A data transmission method includes: receiving, by a receive end, a Radio Link Control protocol data unit (RLC PDU); determining, by the receive end, whether the RLC PDU includes a complete service data unit (SDU) or an SDU segment, where the RLC PDU is transmitted in unacknowledged mode (UM); and transmitting, by the receive end to a Packet Data Convergence Protocol (PDCP) layer based on a result of the determining, the complete SDU or a complete SDU assembled by using the SDU segment. The data transmission method implements data transmission in UM at an RLC layer in 5G.

    PAGING MESSAGE MONITORING METHOD, INDICATION INFORMATION SENDING METHOD, DEVICE, AND SYSTEM

    公开(公告)号:US20210022108A1

    公开(公告)日:2021-01-21

    申请号:US17039670

    申请日:2020-09-30

    Abstract: A method for monitoring paging message, a method for sending indication information, a device, and a system are provided, and relate to the field of communications technologies. The method includes: receiving, by a terminal device, paging occasion configuration information sent by a network device, and monitoring, based on N time domain resources, a paging message sent by the network device. The paging occasion configuration information indicates the N time domain resources in a paging occasion, and N is a positive integer greater than or equal to 1. In this technical solution, the network device can indicate, to the terminal device, the time domain resource that is in the paging occasion and that is used to monitor the paging message.

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