SYSTEM AND METHOD FOR IMPROVING ROHC EFFICIENCY

摘要

The invention relates to interpreting the change in the increment of the RTP TS field as occurring either due to silence suppression for a voice flow or a change in sampling/ frame rate of a video flow. By interpreting this change correctly, the value of the TS_STRIDE field in robust header compression may be correctly calculated leading to efficient header compression performance. In one aspect, there is disclosed a method of improving ROHC between an Access Network AN having a compressor and an Access Terminal AT having a decompressor, comprising providing flow information to the compressor relating to a change in the increment of an RTP TS field of a header (302) ; determining the change in the increment of an RTP TS field as occurring either due to silence suppression or due to a change in a sampling/ frame rate (306) ; and taking appropriate action for TS_STRIDE .