RRC connection recovery method, base station, terminal and readable medium

Abstract

The invention discloses an RRC connection recovery method, a base station, a terminal and a readable medium. The RRC connection recovery method comprises the following steps: receiving an RRC connection recovery request message sent by UE; when the number of DRBs supported by a single UE is not greater than a preset threshold, acquiring AS context information corresponding to the UE, and the number of DRBs contained in the AS context information is not greater than the preset threshold; and recovering the RRC connection corresponding to the UE based on the AS context information. By applying the method, the success rate of RRC connection recovery can be improved.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular to a method for restoring an RRC connection, a base station, a terminal, and a readable medium. Background technique [0002] In Long Term Evolution (LTE) R13, a radio resource control (Radio Resource Control, RRC) connection suspend / resume function is supported. When the RRC connection is released, the base station can request the user equipment (User Equipment, UE) to save the access stratum (Access Stratum, AS) context (context) information, and the base station will also save the AS context information of the UE, which is called RRC connection suspend. Afterwards, when the UE changes from the RRC_IDLE state to the RRC_CONNECTED state, the UE and the base station can use the previously saved AS context information to resume the RRC connection, that is, RRC connection resume (RRC connection resume). When the UE suspends the RRC connection at a certain base...

AI Technical Summary

Problems solved by technology

[0004] According to the existing technical solution, when the UE establishes an RRC connection with more than 8 DRBs at a base station that supports more than 8 DRBs for a single UE (that is, the base station that served the UE last before suspending) and performs RRC connection suspension, then When the UE moves to a base station (new base station) that does not support more than 8 DRBs for a single UE to restore the RRC connection, because the new base station does not support RRC connections with more than 8 DRBs, the RRC connection cannot be restored normally, so the new base station may send The RRC connection establishment message instructs the UE to establish a connection, which will increase unnecessary signaling overhead and increase the time to enter the RRC connection state

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