A method and device for transmitting data in rrc connection state

A technology for transmitting data and connecting states, applied in the field of communication
CN108617004BActive Publication Date: 2020-02-18DATANG MOBILE COMM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
DATANG MOBILE COMM EQUIP CO LTD
Publication Date
2020-02-18

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Abstract

The present invention discloses a method and device for a terminal to transmit data under an RRC connected state. The method includes the step that: after a terminal in an RRC connected state is switched to a target cell or receives a PDCCH command, when the terminal initiates non-competition random access, a base station sends a timing advance command corresponding to the terminal to the terminalwhen sending downlink data or signaling corresponding to the terminal. With the method and the device disclosed by the present invention adopted, the problem of the delay and additional signaling overhead of downlink data or signaling transmission caused by random access after a terminal is switched to a target cell or receives a PDCCH command in the prior art can be solved.
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Description

technical field

[0001] The invention relates to the field of communication technology, in particular to a method and device for transmitting data in an RRC connection state. Background technique

[0002] In Long Term Evolution (LTE) and cellular-based Narrow Band Internet of Things (NB-IoT) systems, the random access process is used in multiple events, especially in handover, wireless resource Control (Radio Resource Control, RRC) connection re-establishment and other processes. The random access process is divided into two scenarios, contention access and non-contention access, and the network side maintains a random access sequence group for contention access and a random access sequence group for non-contention access. Scenarios of non-contention access are divided into handover, positioning, and downlink data arrival (uplink out-of-sync). The implementation process of non-contention access can be divided into the following three steps:

[0003] Step 1, the base statio...

Claims

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