The RObust Header Compression (ROHC) Framework
RFC 5795
Document | Type |
RFC - Proposed Standard
(March 2010; Errata)
Obsoletes RFC 4995
|
|
---|---|---|---|
Authors | Lars-Erik Jonsson , Kristofer Sandlund , Ghyslain Pelletier | ||
Last updated | 2018-12-20 | ||
Replaces | draft-sandlund-rohc-rfc4995bis | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5795 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Magnus Westerlund | ||
Send notices to | ghyslain@live.se |
Internet Engineering Task Force (IETF) K. Sandlund Request for Comments: 5795 G. Pelletier Obsoletes: 4995 Ericsson Category: Standards Track L-E. Jonsson ISSN: 2070-1721 March 2010 The RObust Header Compression (ROHC) Framework Abstract The Robust Header Compression (ROHC) protocol provides an efficient, flexible, and future-proof header compression concept. It is designed to operate efficiently and robustly over various link technologies with different characteristics. The ROHC framework, along with a set of compression profiles, was initially defined in RFC 3095. To improve and simplify the ROHC specifications, this document explicitly defines the ROHC framework and the profile for uncompressed separately. More specifically, the definition of the framework does not modify or update the definition of the framework specified by RFC 3095. This specification obsoletes RFC 4995. It fixes one interoperability issue that was erroneously introduced in RFC 4995, and adds some minor clarifications. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc5795. Sandlund, et al. Standards Track [Page 1] RFC 5795 ROHC Framework March 2010 Copyright Notice Copyright (c) 2010 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1. Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2. ROHC Terminology . . . . . . . . . . . . . . . . . . . . . 5 3. Background (Informative) . . . . . . . . . . . . . . . . . . . 8 3.1. Header Compression Fundamentals . . . . . . . . . . . . . 8 3.2. A Short History of Header Compression . . . . . . . . . . 9 4. Overview of ROHC (Informative) . . . . . . . . . . . . . . . . 10 4.1. General Principles . . . . . . . . . . . . . . . . . . . . 10 4.2. Compression Efficiency, Robustness, and Transparency . . . 11 4.3. Developing the ROHC Protocol . . . . . . . . . . . . . . . 12 4.4. Operational Characteristics of the ROHC Channel . . . . . 13 4.5. Compression and Master Sequence Number (MSN) . . . . . . . 14 4.6. Static and Dynamic Parts of a Context . . . . . . . . . . 15 5. The ROHC Framework (Normative) . . . . . . . . . . . . . . . . 15 5.1. The ROHC Channel . . . . . . . . . . . . . . . . . . . . . 15 5.1.1. Contexts and Context Identifiers . . . . . . . . . . . 15 5.1.2. Per-Channel Parameters . . . . . . . . . . . . . . . . 16 5.1.3. Persistence of Decompressor Contexts . . . . . . . . . 17 Sandlund, et al. Standards Track [Page 2] RFC 5795 ROHC Framework March 2010 5.2. ROHC Packets and Packet Types . . . . . . . . . . . . . . 17Show full document text