RRC connection reestablishment method and terminal

Abstract

The invention provides an RRC connection reestablishment method and a terminal, and the method comprises the steps that the terminal initiates a radio resource control RRC connection reestablishment process to a second cell through a second connection while communicating with a first cell through a first connection when a first condition is satisfied; or, when the third condition is satisfied, theterminal initiates a radio resource control (RRC) connection reestablishment process to the fourth cell through the fourth connection while communicating with the third cell through the third connection. The first cell is a source cell of the terminal; wherein the second cell is a target cell meeting an A3 event entry condition, the third cell is a target cell in the process of executing cell switching by the terminal, and the fourth cell is a cell selected by the terminal in the process of executing cell selection. The method can be suitable for reconstructing the RRC connection in a cell switching failure scene so as to quickly recover the terminal service and reduce the service interruption time.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201810581502.6 and the application title "A Method and Device for Maintaining a Communication Connection" submitted to the China Patent Office on June 07, 2018, the entire contents of which are incorporated herein by reference Applying. technical field [0002] The present application relates to the field of wireless communication, in particular to a method for re-establishing an RRC connection and a terminal. Background technique [0003] In an existing communication system, such as a long term evolution (LTE) system, a terminal, such as a user equipment (UE) or a mobile phone, communicates from the current serving cell (hereinafter referred to as the current cell) to the current cell. During the movement of neighboring cells (hereinafter referred to as neighboring cells), if the terminal detects that the difference between the signal quality of the neighboring cell and...

AI Technical Summary

Problems solved by technology

Furthermore, if the RRC connection re-establishment process also fails, the terminal needs to enter the idle state to re-initiate the RRC connection establishment process, which will lead to service drop

In other words, in the case of a cell handover failure, it takes a long time for the terminal to reestablish the RRC connection and restore the service, resulting in a long time for the terminal service interruption and low efficiency

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