Data integrity protection method and apparatus

    公开(公告)号:US11818139B2

    公开(公告)日:2023-11-14

    申请号:US17330915

    申请日:2021-05-26

    CPC classification number: H04L63/123 H04L63/0428 H04W12/102 H04W12/106

    Abstract: A data integrity protection method and apparatus in a network environment are described. A terminal device obtains an integrity protection algorithm and a key corresponding to a session or a flow, and a DRB corresponding to the session. The terminal device performs, by using the integrity protection algorithm and the key corresponding to the session, integrity protection on data of the DRB corresponding to the session or the flow, where one session includes a plurality of flows. Different integrity protection algorithms and keys can be used for different sessions, and different integrity protection algorithms and keys can also be used for different flows. In this way, integrity protection is more flexible and meets security requirements of a same user for different services.

    Information processing method and device

    公开(公告)号:US11153934B2

    公开(公告)日:2021-10-19

    申请号:US16579643

    申请日:2019-09-23

    Abstract: This application provides a method including: determining, by a terminal device from at least one radio interface technology, a first radio interface technology used to send first information, where each of the at least one radio interface technology corresponds to an uplink resource, and the first information includes a size of to-be-sent data of at least one logical channel of the terminal device; and determining, by the terminal device based on the first information and attribute information of the first radio interface technology, whether to cancel the first information that is in a triggered state, where the attribute information of the first radio interface technology includes a priority of the first radio interface technology or an uplink resource corresponding to the first radio interface technology. The method provided in this application improves accuracy of canceling the first information that is in the triggered state, and shortens a data sending delay.

    Data transmission method, device, and communications system

    公开(公告)号:US10911978B2

    公开(公告)日:2021-02-02

    申请号:US16716333

    申请日:2019-12-16

    Abstract: A data transmission method, a device, and a communications system are described. The method includes generating, by a terminal device, first indication information. The first indication information is used to indicate logical channel groups having to-be-sent data and amount of to-be-sent data on part of the logical channel groups having to-be-sent data. The method includes sending, by the terminal device, the first indication information. According to the data transmission method, the device, and the communications system provided in the described embodiments, when a current quantity idle bits in a MAC PDU is insufficient, the terminal device may indicate, to a network device by using the first indication information, the LCGs having to-be-sent data on the terminal device. In this way, uplink transmission resource allocation improved efficiency.

    Communications method and apparatus

    公开(公告)号:US11799968B2

    公开(公告)日:2023-10-24

    申请号:US17751284

    申请日:2022-05-23

    CPC classification number: H04L67/141 H04L47/82

    Abstract: A communications method and apparatus are provided. The method includes: A first access network device sends a first message to a core network device, where the first message is used to indicate to suspend one or both of a first PDU session and a second PDU session. The first PDU session and the second PDU session are PDU sessions that are established as requested by a same terminal, and are used to transmit a duplicated data packet. According to the method, when a condition for implementing reliable transmission is not met, the core network device can be indicated to suspend the PDU session. In this way, a PDU session does not need to be re-established, and signaling overheads for establishing the PDU session are saved.

    Communication method, terminal, and base station

    公开(公告)号:US11405921B2

    公开(公告)日:2022-08-02

    申请号:US16713426

    申请日:2019-12-13

    Abstract: Embodiments of this application provide a communication method, a terminal and a base station. The method includes: receiving, by a terminal, a scheduling request resource configuration sent by a base station, where the scheduling request resource configuration indicates an uplink resource type or logical channel information; and sending, by the terminal, a scheduling request to the base station via a target scheduling request resource based on the scheduling request resource configuration and uplink data, where the target scheduling request resource indicates a target uplink resource type, and the scheduling request resource configuration includes the target scheduling request resource. In the embodiments of this application, when diversity of the uplink data is considered, the base station configures different scheduling request resources for different service characteristics, and the terminal selects different scheduling request resources for different service characteristics, to improve effectiveness of uplink service transmission.

    Communications method and apparatus

    公开(公告)号:US11296841B2

    公开(公告)日:2022-04-05

    申请号:US16943646

    申请日:2020-07-30

    Abstract: This application provides a communications method and apparatus. The method includes: obtaining, by a media access control (MAC) entity, M radio link control (RLC) protocol data units PDUs, where M is an integer greater than or equal to 2; and generating, by the MAC entity, N media access control MAC protocol data units (PDUs) based on a logical channel corresponding to each of the M RLC PDUs, where any two RLC PDUs corresponding to a same logical channel and having consecutive RLC sequence numbers are carried in different MAC PDUs, and N is an integer greater than or equal to 2. Consecutive RLC PDUs are placed into different MAC PDUs, so that a continuous packet loss of a same service can be avoided, and transmission reliability can be improved.

    Communication method and communications apparatus

    公开(公告)号:US11240832B2

    公开(公告)日:2022-02-01

    申请号:US16787944

    申请日:2020-02-11

    Abstract: A communication method is provided. In the method, if a first logical channel of a terminal device does not have an uplink resource for carrying a scheduling request (SR) and the terminal device is in a first SR state, remaining, by the terminal device, in the first SR state and/or a first buffer status report (BSR) state until data of the first logical channel and/or a BSR are/is sent, where the BSR is used to indicate buffer status information of a logical channel group including the first logical channel. When a logical channel of the terminal device does not have an uplink resource for carrying the scheduling request, a problem that the terminal device cannot obtain an uplink transmission resource can be resolved.

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