Data transmission and reception method and device, terminal, and base station of UE in non-connected state

A technology of a data transmission method and a data reception method, applied in the field of communication, can solve the problems of prolonging the data transmission delay of a non-connected UE, and the state transition time is long, so as to meet the requirements of service transmission, save the delay, and reduce the delay. Effect

Active Publication Date: 2022-03-22
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, if a UE in the unconnected state needs to initiate data transmission, it usually needs to perform a random access process to migrate from the unconnected state to the connected state. The state transition takes a long time, which may prolong the data transmission of the unconnected state UE. Transmission delay needs to be improved

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  • Data transmission and reception method and device, terminal, and base station of UE in non-connected state
  • Data transmission and reception method and device, terminal, and base station of UE in non-connected state
  • Data transmission and reception method and device, terminal, and base station of UE in non-connected state

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Embodiment Construction

[0042] As mentioned in the background art, in the prior art, a UE in a non-connected state is transferred to a connected state to transmit data, but since the state transition introduces a long delay, the data transmission process needs to be further improved.

[0043] In the prior art, the random access process is mainly divided into contention based random access (Contention Based Random Access, CBRA for short) and contention free random access (Contention Free Random Access, CFRA for short).

[0044] If CFRA is adopted, the network needs to configure dedicated resources. The dedicated resources mainly refer to time-frequency resources and code resources for initiating a random access preamble (preamble), indicated by the parameter ra-PreambleIndex. refer to figure 1 , figure 1 It is a schematic flow chart of random access in the prior art. This random access is CFRA. First, the base station 2 performs operation S0, that is, sends random access preamble configuration info...

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Abstract

A data transmission and reception method and device for a UE in a non-connected state, a terminal, and a base station. The data transmission method includes: receiving pre-configuration information; and using public resources to transmit data packets to be transmitted according to the pre-configuration information. The technical scheme provided by the invention can reduce the data transmission delay of the UE in the non-connected state.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a data transmission and reception method and device, a terminal, and a base station of a UE in a non-connected state. Background technique [0002] In the 3rd Generation Partnership Project (the 3rd Generation Partnership Project, referred to as 3GPP) New Radio (NR) communication system, the air interface of the user equipment (User Equipment, referred to as UE) has three states: radio resource control (Radio Resource Control, referred to as RRC) idle state (IDLE), RRC inactive (INACTIVE) state and RRC connected (CONNECTED) state. [0003] The UE in the RRC idle state is not connected to the base station (gNB), and only needs to periodically initiate location updates, cell selection and reselection procedures, and receive paging. The RRC connection state is connected to the network, and the network will configure the UE radio bearer (RB for short) and physical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/27H04W74/00H04W74/08
CPCH04W76/27H04W74/004H04W74/085H04W74/006H04W16/14H04W74/08
Inventor 徐敏
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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