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Downlink data transmission method and device

A technology of downlink data and transmission method, which is applied in the direction of electrical components and wireless communication, and can solve the problems of signaling overhead, energy consumption and service delay without obvious improvement

Active Publication Date: 2018-11-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the RRC_INACTIVE state, only the transmission of uplink small data packets is discussed, and there is no significant improvement in signaling overhead, energy consumption, and service delay

Method used

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  • Downlink data transmission method and device

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Embodiment Construction

[0105] Below, some terms in this application are explained, so that those skilled in the art can understand:

[0106] Base station: it may belong to a radio access network (Radio Access Network, RAN) device, it may be a device that connects a terminal to a wireless network, it may be a Global System of Mobile communication (GSM) or Code Division Multiple Access (CDMA) The base station (Base Transceiver Station, BTS) in Code Division Multiple Access, CDMA), also can be the base station (NodeB, NB) in the wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), can also be long term evolution (Long Term The evolved base station (Evolutional Node B, eNB or eNodeB) in Evolution, LTE), or the relay station or access point, or the base station (such as gNB or gNodeB) in the future 5G network, etc., are not limited here.

[0107] Terminal: It can be a wireless terminal or a wired terminal. A wireless terminal can be a device that provides voice and / or o...

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Abstract

The invention provides a downlink data transmission method and device. The method comprises the steps that an access base station receives downlink data sent by an anchor base station and connection parameters of a terminal, wherein the access base station is the base station accessed by the terminal at present, the connection parameters of the terminal are stored in the anchor base station and contain an identifier of the terminal, and the terminal is in a radio resource control (RRC) inactive state; and the access base station sends the downlink data to the terminal according to the identifier of the terminal. Downlink data transmission in the RRC_INACTIVE state is achieved, and therefore the sending delay of the downlink data can be shortened; and in addition, an RRC signaling process can be not involved, so that the complexity of terminal state maintenance is reduced, or a switching process is omitted, so that the switching overhead is reduced.

Description

technical field [0001] The present application relates to wireless communication technologies, and in particular to a downlink data transmission method and device. Background technique [0002] In a traditional Long Term Evolution (Long Term Evolution, LTE) system, there are only an idle (IDLE) state and a connected (connected) state. All data transmission needs to be switched from the IDLE state to the connected state, and then the service interaction between the terminal and the network side. [0003] In order to reduce energy consumption and service delay, a radio resource control (Radio Resource Control, RRC) deactivation (INACTIVE in English) state is introduced. At present, in the RRC_INACTIVE state, only the transmission of uplink small data packets is discussed, and there is no obvious improvement in signaling overhead, energy consumption, and service delay. [0004] Therefore, a method for downlink data transmission in the RRC_INACTIVE state is needed. Contents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W68/00
CPCH04W68/00H04W72/27H04W72/23
Inventor 杨阳晋英豪谭巍
Owner HUAWEI TECH CO LTD
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