METHOD AND APPARATUS FOR RECONFIGURING A BEARER

    公开(公告)号:US20210029771A1

    公开(公告)日:2021-01-28

    申请号:US17065725

    申请日:2020-10-08

    摘要: A data transmission method of a User Equipment, UE, in a Long Term Evolution, LTE, compliant mobile communications network, and a corresponding UE. The method comprises detecting reconfiguration of a bearer from a split bearer in which uplink Packet Data Convergence Protocol, PDCP, Protocol Data Units, PDUs, are transmitted to both a Master eNB, MeNB, and to a Secondary eNB, SeNB, to a non-split bearer in which uplink PDCP PDUs are transmitted only to the MeNB. If reconfiguration of a bearer from a split bearer to a non-split bearer in which uplink PDCP PDUs are transmitted to the MeNB is detected, the method further comprises initiating retransmission of PDCP PDUs from the first PDCP PDU for which transmission was attempted via the SeNB and for which there has been no confirmation of successful delivery by a protocol layer below the PDCP layer within the UE. The method further comprises retransmitting only PDCP PDUs for which transmission of the PDU was attempted via the SeNB.

    DATA TRANSMISSION METHOD AND DEVICE, AND COMPUTER STORAGE MEDIUM

    公开(公告)号:US20210029728A1

    公开(公告)日:2021-01-28

    申请号:US17069363

    申请日:2020-10-13

    发明人: JIANHUA LIU

    IPC分类号: H04W72/12 H04W76/25 H04W4/40

    摘要: A data transmission method and device are provided. The method comprises a non-access stratum of a terminal device obtains description information of data to be transmitted; the non-access stratum determines, according to a mapping relationship between preset data description information and reliability transmission indication information, and the description information of the data to be transmitted, the reliability transmission indication information corresponding to the data to be transmitted, the reliability transmission indication information being used for indicating whether to perform reliability transmission on the data to be transmitted; transmitting, by the NAS, the reliable transmission indication information corresponding to the data to be transmitted to an access stratum of the terminal device, and performing, by the terminal device, transmission of the data to be transmitted.

    Key obtaining method and device, and communications system

    公开(公告)号:US10904750B2

    公开(公告)日:2021-01-26

    申请号:US16383087

    申请日:2019-04-12

    发明人: Jing Chen Kai Pan He Li

    摘要: In a method for security handling in a mobility of a terminal device, a target access and mobility management function (AMF) entity receives a first message for registering a terminal device, sends a second message to a source AMF entity after receiving the first message. The source AMF entity derives a first key based on a key between the source AMF entity and the terminal device, sends the first key to the target AMF entity. The target AMF entity determines to use the first key based on security related information after receiving the first key and determines a communication key between the target AMF entity and the terminal device based on the first key after determining to use the first key.

    SECONDARY COMMUNICATION NODE CHANGE
    147.
    发明申请

    公开(公告)号:US20210014750A1

    公开(公告)日:2021-01-14

    申请号:US17037281

    申请日:2020-09-29

    申请人: ZTE Corporation

    发明人: Jianmin Fang He Huang

    摘要: Methods, systems, and devices related to mobility robustness in dual connectivity mode are described. In one representative aspect, a method for wireless communication includes receiving, at a master communication node, a first message from a first secondary communication node requesting a change from a first connection to a second connection. The method includes transmitting a second message to the second secondary communication node to request establishing the second connection. The method includes receiving a third message from the mobile device confirming a configuration of the second connection. The method includes receiving a fourth message from the mobile device indicating a failure of the second connection. The method further includes transmitting a fifth message to the first secondary communication node to report that the change from the first connection to the second connection is an improper change.

    Method for selecting resource operation preferred by user in wireless communication system and device for same

    公开(公告)号:US10856265B2

    公开(公告)日:2020-12-01

    申请号:US16311156

    申请日:2017-07-05

    发明人: Jinsook Ryu

    摘要: In one aspect of the present invention, there is provided a method for configuring, by a network node, a resource of a user equipment (UE) in a wireless communication system including receiving resource preference information of the UE; configuring a resource for the UE based on the resource preference information; and transmitting, to the UE, a result of configuring the resource for the UE, wherein the configuring of the resource for the UE based on the resource preference information includes, when a plurality of resource operation units in which an entire available resource range is divided into a predetermined number is configured for the UE, selecting a specific resource operation unit among the plurality of resource operation units according to the resource preference information of the UE.

    Communication Method and Apparatus
    149.
    发明申请

    公开(公告)号:US20200374964A1

    公开(公告)日:2020-11-26

    申请号:US16992950

    申请日:2020-08-13

    摘要: Embodiments of this application relate to the field of communications technologies, and disclose communications methods and apparatuses. In an implementation, a method comprising receiving, by a first communications device, information about a radio bearer (RB) of a heterogeneous communications system, wherein a duplication operation for the RB is configured by a second communications device, and the first communications device and the second communications are comprised in a master node or a secondary node; generating, by the first communications device, an activation indication indicating whether to activate or deactivate the duplication operation of the RB, wherein whether to activate or deactivate the duplication operation is determined by the first communications device; and sending the activation indication to a terminal device.

    METHOD AND DEVICE FOR ESTABLISHING SESSION
    150.
    发明申请

    公开(公告)号:US20200374684A1

    公开(公告)日:2020-11-26

    申请号:US16957730

    申请日:2018-12-05

    摘要: Disclosed are a method and device for establishing a session, used for solving the problem in the prior art that the method for establishing data transmission of a control plane in a 4G network is not applicable to a 5G network. After receiving a session establishment request sent by a terminal, an access and mobility management function entity in the embodiment of the present disclosure indicates to a session management function entity that a control plane session is established for the terminal; the session management function entity indicates tunnel information of downlink data transmission to a user plane function entity, and data transmission is performed between the access and mobility management function entity and the terminal via a non-access layer message when data needs to be transmitted.