PAYLOAD HEADER COMPRESSION IN AN RTP SESSION

摘要

An RTP payload header (408) is compressed by utilizing a codebook (514) that holds one or more indexable payload header variations and sending it to a receiving device (504). An RTP packet (400) that includes the payload header (408) with information pertaining to the packet is generated by a sending device (502) and the codebook is searched for the payload header information. If the information is found, the payload header (408) is replaced with a short index in the codebook (514). At the receiving device (504) the index is used to retrieve a payload header variation that corresponds to the index and the variation is placed back into the payload header (408) to uncompress the header.