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Rohc Status Pages

Robust Header Compression (Concluded WG)
Tsv Area: Mirja K├╝hlewind, Magnus Westerlund | 2000-Apr-13 — 2010-Mar-16 
Chairs
 


2010-02-25 charter

Robust Header Compression (rohc)
--------------------------------

 Charter

 Current Status: Active

 Chair:
     Carl Knutsson <carl.knutsson@effnet.com>

 Transport Area Directors:
     Magnus Westerlund <magnus.westerlund@ericsson.com>
     Lars Eggert <lars.eggert@nokia.com>

 Transport Area Advisor:
     Magnus Westerlund <magnus.westerlund@ericsson.com>

 Tech Advisors:
     Erik Nordmark <erik.nordmark@sun.com>
     Carsten Bormann <cabo@tzi.org>

 Mailing Lists:
     General Discussion: rohc@ietf.org
     To Subscribe:       rohc-request@ietf.org
     Archive:            http://www.ietf.org/mail-archive/web/rohc/index.html

Description of Working Group:

  The Robust Header Compression (ROHC) Working Group was formed to
  develop new header compression protocols, designed to suit today's and
  future target link technologies. Most specifically, the ROHC protocols
  were to take into account typical needs presented by various wireless
  link technologies, and perform well for cellular links built using
  technologies such as WCDMA, EDGE, and CDMA-2000. Protocol development
  has thus focused on coping with issues such as high loss rates and long
  round trip times.

  The WG has specified a common compression protocol platform, the ROHC
  framework, along with a number of compression protocols (profiles).
  Most focus has been on compression of the Real-time Transport Protocol
  (RTP) headers, but profiles have also been specified for compression of
  UDP, ESP, IP-only, UDP-Lite, and TCP headers. The WG has further
  produced a ROHC link integration specification for PPP, an optimized
  RTP compression scheme for "0-byte compression", a ROHC MIB, as well as
  various informational documents related to ROHC header compression
  and/or header compression in general.

  In addition to the work on header compression, the ROHC WG has also
  developed the SigComp (Signaling Compression) protocol for end-to-end
  compression of text-based signaling protocol messages.

  The working group maintains connections with other standardization
  organizations developing cellular technology for IP, such as 3GPP and
  3GPP-2, to ensure that its output fulfills their requirements and will
  be put to good use.

  The current aims of the working group are:

  - to carry out a re-work of the ROHC framework and profiles
  specifications, hereafter referred to as the ROHCv2 project. The
  purpose of the ROHCv2 project is to generate a separate framework
  specification, not changing the framework part of the ROHC protocol, as
  well as a set of revised compression profiles. The most specific goals
  with the ROHCv2 profiles are to improve tolerance to packet reordering
  between compressor and decompressor, and to reduce the overall
  complexity of the protocol. It should be noted that the v2 profiles
  will thus not be compatible with the original (ROHCv1) profiles, which
  means less complex ROHC implementations can be realized by not
  providing support for ROHCv1 (over links not yet supporting ROHC, or by
  shifting out support for ROHCv1 in the long run). Profile support is
  agreed through the ROHC channel negotiation, which is part of the ROHC
  framework and thus not changed by ROHCv2.

  - to update and correct the original profile specifications through
  publication of the "Corrections and Clarifications to RFC 3095"-
  document.

  - to finalize the ROHC profile work for TCP header compression.

  - to develop and/or document proper protocol solutions to apply ROHC
  over IPsec tunnels.

  - to finalize the "SigComp implementer's guide" and "SigComp for SIP"
  documents.

  The longer term goal of the working group is to advance all its
  specifications to Draft Standard status (with an exception for the
  original profiles being revised as part of the ROHCv2 activity).


Goals and Milestones:
  Done     - Submit I-D on Requirements for IP/UDP/RTP header compression.
  Done     - Submit I-D of layer-2 design guidelines.
  Done     - Submit I-D(s) proposing IP/UDP/RTP header compression schemes.
  Done     - Submit I-D of Requirements for IP/TCP header compression.
  Done     - Requirements for IP/UDP/RTP header compression submitted to IESG for publication as Informational.
  Done     - Resolve possibly multiple IP/UDP/RTP compression schemes into a single scheme.
  Done     - Submit I-D on IP/TCP header compression scheme.
  Done     - IP/UDP/RTP header compression scheme submitted to IESG for  publication as Proposed Standard.
  Done     - Layer-2 design guidelines submitted to IESG for publication as Informational.
  Done     - Initial draft on general signaling compression security analysis.
  Done     - Requirements and assumptions for signaling compression
  Done     - Signaling compression scheme submitted to IESG for publication as Proposed Standard, including security approach for SIP compression usage.
  Done     - General signaling compression security analysis submitted to IESG for publication as Informational.
  Done     - ROHC MIB submitted to IESG for publication as Proposed Standard.
  Done     - ROHC IP-only profile submitted to IESG for publication as Proposed Standard
  Done     - ROHC UDP Lite schemes submitted to IESG for publication as Proposed Standard.
  Done     - Requirements for IP/TCP header compression submitted to IESG for publication as Informational.
  Done     - Problem analysis ROHC-over-channels-that-can-reorder-packets submitted to IESG for publication as Informational
  Done     - I-Ds of ROHC IP/UDP/RTP bis, framework and profiles separated.
  Done     - RFC 3095 Implementer's Guide submitted to IESG for publication as Proposed Standard
  Done     - IP/TCP compression scheme submitted to IESG for publication as Proposed Standard
  Done     - ROHC framework submitted to IESG for publication as Proposed Standard
  Done     - SigComp for SIP submitted to IESG for publication as Proposed Standard
  Done     - Revised ROHC IP/UDP/RTP profiles submitted to IESG for publication as Proposed Standard
  Done     - SigComp Implementer's Guide submitted to IESG for publication as Proposed Standard
  Done     - IKE/IPsec extensions for HC-session Parameter Negotiation submitted to IESG for publication as Proposed Standard
  Done     - Header Compression over IPsec (HCoIPsec) submitted to IESG for publication as Informational
  Jun 2007 - Recharter of WG to develop additional profiles if needed, or possible additional compression schemes. Consideration of concluding the working group.
  Done     - Revised ROHC framework submitted to IESG for publication as Proposed Standard
  Mar 2010 - Conclusion of the working group.


All charter page changes, including changes to draft-list, rfc-list and milestones:



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