Communication method, device and system in wireless network

Abstract

The embodiment of the invention discloses a communication method, device and system in a wireless network. The communication method in the wireless network includes: a terminal device establishes a dual connection with a first access network device and a second access network device. Wherein, the connection between the terminal device included in the dual connectivity and the first access network device is a radio resource control (RRC) connection. The terminal device receives the first configuration information sent by the first access network device. Wherein, the first configuration information includes SRB configuration information of the second access network device and a trigger condition for enabling the SRB configuration information. When the trigger condition is met, the terminal device enables the SRB configuration information of the second access network device to establish an RRC connection with the second access network device. Therefore, the recovery of the dual-connection working mode is accelerated, and the requirement for low latency is met.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method, device and system in a wireless network. Background technique [0002] In the fourth generation (4th Generation, 4G) mobile communication, the reliability of the radio resource control (Radio Resource Control, RRC) connection is the basis for ensuring the information interaction between the control plane and the user plane. Radio link problems can cause RRC connections to be unreliable, thereby affecting communication quality. In order to ensure the reliability of the RRC connection, a Dual Connectivity (DC) architecture is introduced in 4G mobile communications. Taking the Long Term Evolution (LTE) system as an example, under the DC architecture, the terminal device can communicate with the primary access network device (such as the primary base station MeNB (Master eNB)) and the secondary access network device (such as the secondary ...

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Problems solved by technology

[0009] However, the data transmission is temporarily interrupted during the RRC connection re-establishment process between the terminal device and the main access network device, and the resulting data interruption delay is undesirable for the URLLC service

At the same time, the addition or modification of auxiliary access network equipment needs to be completed through the RRC connection reconstruction process, which prolongs the recovery time of the dual connection architecture and is not conducive to the realization of URLLC service target performance

Therefore, the delay caused by the existing dual connection recovery process cannot meet the requirements of 5G mobile communication services, especially the low delay requirements of URLLC services

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