Network Working Group G. Pelletier
Request for Comments: 4019 Ericsson AB
Category: Standards Track April 2005
RObust Header Compression (ROHC):
Profiles for User Datagram Protocol (UDP) Lite
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2005).
Abstract
This document defines Robust Header Compression (ROHC) profiles for
compression of Real-Time Transport Protocol, User Datagram Protocol-
Lite, and Internet Protocol (RTP/UDP-Lite/IP) packets and UDP-
Lite/IP. These profiles are defined based on their differences with
the profiles for UDP as specified in RFC 3095.
Table of Contents
1. Introduction.................................................. 2
2. Terminology................................................... 3
3. Background.................................................... 3
3.1. Overview of the UDP-Lite Protocol....................... 3
3.2. Expected Behaviours of UDP-Lite Flows................... 5
3.2.1. Per-Packet Behavior............................. 5
3.2.2. Inter-Packet Behavior........................... 5
3.2.3. Per-Flow Behavior............................... 5
3.3. Header Field Classification............................. 5
4. Rationale behind the Design of ROHC Profiles for UDP-Lite..... 6
4.1. Design Motivations...................................... 6
4.2. ROHC Considerations..................................... 6
5. ROHC Profiles for UDP-Lite.................................... 6
5.1. Context Parameters...................................... 7
5.2. Initialization.......................................... 8
5.2.1. Initialization of the UDP-Lite Header [1]....... 8
5.2.2. Compressor and Decompressor Logic............... 9
5.3. Packet Formats.......................................... 9