RObust Header Compression (ROHC): Framework and four profiles: RTP, UDP, ESP, and uncompressed

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Abstract

Existing header compression schemes do not work well when used over links with significant error rates and long round-trip times. For many bandwidth limited links where header compression is essential, such characteristics are common. A highly robust and efficient header compression scheme for RTP/UDP/IP, UDP/IP and ESP/IP headers is specified in this document. This is done in a framework designed to be extensible. For example, a scheme for compressing TCP/IP headers will be simple to add, and is in development. Headers specific to Mobile IPv4 are not subject to special treatment, but are expected to be compressed sufficiently well by the provided methods for compression of sequences of extension headers and tunneling headers. For the most part, the same will apply to work in progress on Mobile IPv6, but future work might be required to handle some extension headers, when a standards track Mobile IPv6 has been completed. Revision history (remove before publishing) -08: Incorporate changes from second, abbreviated WG last call; ready for submission to an IESG last-call. -07: Incorporate changes from WG last call -06: Final changes for WG last call -05: Editorial changes -04: Complete 5.5 and 5.8. Remove section 7 (no longer needed) and renumber. Restructure section 5 to clearly separate the profiles. -03: Redo packet formats to allow new ROHC framework. Fill in gaps. -02: Major changes after 48th IETF -01: Minor editorial changes for 48th IETF -00: Document created from ROHC submissions

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