SIGNALLING TRANSMISSION METHOD, DEVICE AND SYSTEM UNDER COMBINED SERVICE

摘要

Disclosed are a signalling transmission method, device and system under a combined service. The method includes: a network-side device dividing a control signalling into N levels, and establishing correlations between the N levels and M SRBs, where 2 <= M <= N <= 32; in the correlations, each level corresponds to one SRB, each SRB corresponds to at least one level; when determining to transmit the control signalling to UE, the network-side device using the SRB corresponding to the level of the control signalling to transmit the control signalling according to same. The embodiments of the present invention can reduce the possibility of SRB2 having non-recoverable errors and improve the timeliness and effectiveness of service transmission.