A Method to Prevent Frame Protocol Frame Out of Synchronization

Abstract

The invention provides a method of preventing frame protocol (FP) frames from being out-of-frame. The method includes the steps that a receiver counts the number of the FP frames N_snd which are sent by a sender in the present period according to a preset statistical cycle and preset statistical granularity, a receiver successfully receives the number of the FP frames N_rcv, the statistical result is informed on the sender, the statistics granularity uses a base station, a community or a carrier wave as the statistical unit, the sender determines whether Iub interface blocking exists at the present according to the statistical result, the sender figures out the present packet loss rate according to the N_snd and the N_rcv corresponding to the blocking when the Iub interface blocking exists, random packet dropping is conduct according to the packet loss rate when data frames are sent. By adopting the method of preventing the FP frames from being out-of-frame, possibility of falling out step of the FP frames can be effectively reduced.

Description

technical field [0001] The invention relates to data transmission technology in a mobile communication system, in particular to a method for preventing frame protocol (FP) frame out of synchronization. Background technique [0002] In the current TD-SCDMA system, the base station (NodeB) and the radio network control (RNC) data plane interact through the FP protocol of the Iub port. The FP frame is divided into two types: control frame and data frame. and other important information. Usually, the Iub port transmits FP frames indiscriminately. If there is a short-term burst of large data volume that exceeds the configured bandwidth of the Iub port, the transport layers on the NodeB and RNC sides will randomly drop FP frames. If the lost is a synchronous control frame, then It is likely to cause FP to lose synchronization and users to release abnormally. [0003] A method that can solve the above-mentioned FP out-of-synchronization problem has not been proposed so far. Con...

AI Technical Summary

Problems solved by technology

Usually, the Iub port transmits FP frames indiscriminately. If there is a short-term burst of large data volume that exceeds the configured bandwidth of the Iub port, the transport layers on the NodeB and RNC sides will randomly drop FP frames. If the lost is a synchronous control frame, then It is likely to cause FP to lose synchronization and users to release abnormally

[0003] A method that can solve the above-mentioned FP out-of-sync problem has not yet been proposed

Images