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Transmission method and device

A transmission method and secondary base station technology, applied in the field of transmission methods and devices

Active Publication Date: 2020-06-23
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present application provide a transmission method and device to solve the problem of data transmission in the secondary base station handover process in the dual connectivity scenario

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  • Transmission method and device
  • Transmission method and device
  • Transmission method and device

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Embodiment Construction

[0061] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0062] First, the concepts involved in this application are explained.

[0063] Terminal device: It can be a device that includes wireless transceiver functions and can cooperate with network devices to provide users with communication services. Specifically, the terminal equipment may refer to user equipment (User Equipment, UE), an access terminal,...

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Abstract

Provided are a transmission method and device, the method being applied to a terminal device, the terminal device being respectively connected with a primary base station and a first secondary base station, the method comprising: receiving a primary and secondary cell update instruction sent by the primary base station, the primary and secondary cell update instruction comprising an identifier ofa second secondary base station; according to the identifier of the second auxiliary base station, establishing a first protocol entity associated with the data radio bearer DRB and the second auxiliary base station; receiving first downlink data sent by a second auxiliary base station according to a first protocol entity, and receiving second downlink data sent by the first auxiliary base stationaccording to a second protocol entity, the second protocol entity being a protocol entity in which the DRB is associated with the first auxiliary base station; and combining the first downlink data and the second downlink data to obtain a packet data convergence protocol PDCP data packet corresponding to the DRB. According to the embodiment of the invention, DAPS switching in a dual-connection scene can be realized, and the performance of data transmission is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a transmission method and device. Background technique [0002] In the 5G new air interface (New Radio, NR), a new handover mechanism is introduced in the non-dual connection scenario, that is, Dual Active Protocol Stack Handover (Dual Active Protocol Stack Handover, DAPS HO). For the data radio bearer (Data Radio Bearer, DRB) that applies DAPS handover, the source base station needs to uniformly allocate sequence numbers for Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) packets, and then assign some PDCP packets and corresponding sequence numbers The data is sent to the target base station, and then the target base station sends the downlink data to the terminal equipment during the handover process. [0003] With the development of communication technology, dual-connectivity systems are gradually being widely used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/08H04W76/15
CPCH04W36/0027H04W36/0069H04W36/08H04W76/15
Inventor 邓云顾祥新韩立锋
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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