SCHEME, APPARATUS, AND PROGRAM FOR HEADER COMPRESSION

摘要

The transmission end (header compression end) and the reception end (header decompression end) share the same timestamp calculation information which is previously prepared. At the transmission end, in the case that the timestamp of the current packet to be subjected to header compression cannot be compressed with the current timestamp calculation information S33, the history record which covers timestamp calculation information so far transmitted is referred to determine S35 which to transmit a packet header carrying the timestamp without updating the current timestamp calculation information S37, or a packet header carrying the timestamp S34 by updating the current timestamp calculation information.