IP over IEEE 802.16 Networks (16ng)
-----------------------------------

 Charter
 Last Modified: 2007-01-22

 Current Status: Active Working Group

 Chair(s):
     Gabriel Montenegro  <gabriel_montenegro_2000@yahoo.com>
     Soohong Daniel Park  <soohong.park@samsung.com>

 Internet Area Director(s):
     Jari Arkko  <jari.arkko@piuha.net>
     Mark Townsley  <townsley@cisco.com>

 Internet Area Advisor:
     Jari Arkko  <jari.arkko@piuha.net>

 Technical Advisor(s):
     Maximilian Riegel  <maximilian.riegel@siemens.com>
     Dave Thaler  <dthaler@windows.microsoft.com>

 Secretary(ies):
     Jihoon Lee  <jhlee@mmlab.snu.ac.kr>

 Mailing Lists: 
     General Discussion:16ng@ietf.org
     To Subscribe:      https://www1.ietf.org/mailman/listinfo/16ng
     Archive:           http://www1.ietf.org/mail-archive/web/16ng/current/index.html

Description of Working Group:

Broadband Wireless Access Networks address the inadequacies of low
bandwidth wireless communication for user requirements such as high
quality data/voice service, wide coverage, etc. The IEEE 802.16 Working
Group on Broadband Wireless Access Standards develops standards and
recommended practices to support the development and deployment of
Broadband Wireless Metropolitan Area Networks.

A particularity of IEEE 802.16 is that it does not include a rigid 
upper edge MAC service interface. Instead, it provides 
multiple "convergence sublayers (CS)" with the assumption that the 
choice and configuration of the upper edge will be done in accordance 
with the needs of a specific deployment environment (which might be 
DSL replacement, mobile access, 802.11 or CDMA backhaul etc.).

Specifically, immediately subsequent to network entry, an 802.16 
subscriber station has no capability whatsoever for data (as opposed 
to management) connectivity. Especially, in IP CS case, the criteria 
by which the Base Station (or other headend elements) sets up the 
802.16 MAC connections for data transport are not part of the 802.16 
standard, and depend on the type of data services being offered (e.g., 
the set up of link layer connections will be different for IPv4 and 
IPv6 services).

Additionally - as IEEE 802.16 is a point-to-multipoint network - an 
802.16 subscriber station is not capable of multicasting (e.g., for 
neighbor discovery, ARP, IP multicasting services, etc.) or direct 
communication to the other nodes attached to the same Base Station 
within the same subnet (prefix).

Unlike 3G or xDSL technologies, IEEE 802.16 is not part of an end-to-
end system definition. Currently, the WiMAX Forum, and, in particular, 
its NWG (Network Working Group) is defining a network architecture 
based on IEEE 802.16.

The principal objective of the 16ng working group is to specify the
operation of IPv4 and IPv6 over IEEE 802.16, taking into account the 
IPv4, IPv6 and Ethernet Convergence Sublayers. The working group may 
issue recommendations to IEEE 802.16 and WiMax aiming at improving 
support for IP.

The scope of this working group is as follows (WG Deliverables);

- Produce "16ng Problem Statement, Goal and Requirement" to identify 
the specific gaps in the 802.16 MAC for IPv4/IPv6 support, describe 
possible network models (ie. point-to-point, broadcast etc.), and 
provide 16ng related terminology to be used for the base guideline 
while defining solution frameworks. [Informational RFC]

- Produce "IPv6 over IEEE 802.16 Networks in conjunction with IPv6 CS"
to define IPv6 operation including the transmission of IPv6 over IEEE
802.16 link, Neighbor Discovery Protocol, Stateful (DHCPv6) and 
Stateless Address Configuration, Broadcast, Multicast, etc. [Proposed 
Standard RFC]

- Produce "IPv6 over IEEE 802.16 Networks in conjunction with Ethernet 
CS" to define IPv6 operation including the transmission of IPv6 over 
IEEE 802.16 link, Neighbor Discovery Protocol, Stateful (DHCPv6) and 
Stateless Address Configuration, Broadcast, Multicast, etc. [Proposed 
Standard RFC]

- Produce "IPv4 over IEEE 802.16 Networks in conjunction with IPv4 CS"
to define IPv4 operation including the transmission of IPv4 over IEEE 
802.16 links, ARP operation, Stateful Address Configuration (DHCPv4), 
Broadcast, Multicast, etc [Proposed Standard RFC]

- Produce "IPv4 over IEEE 802.16 Networks in conjunction with Ethernet 
CS" to define IPv4 operation including the transmission of IPv4 over 
IEEE 802.16 links, ARP operation, Stateful Address Configuration 
(DHCPv4), Broadcast, Multicast, etc [Proposed Standard RFC]

- Produce "IP deployment over IEEE 802.16 Networks" to illustrate the 
IP deployment scenarios including IP CS and Ethernet CS considerations 
over IEEE 802.16 networks based on the WiMAX and WiBro. [Informational 
RFC]

This working group will take dual stack operation into account in its
specifications, and reuse existing specifications whenever reasonable 
and possible. The ability to negotiate the used Convergence Sublayer is
required, as no single mandatory CS can be specified for the clients.
Work based on the Ethernet CS needs to take into account 
interoperability with existing hosts and other devices that employ 
Ethernet¸ to allow bridging.

16ng will not initially consider other work items than the ones listed
above; however, other related work may occur in other WGs, and 16ng 
will participate and help such efforts.

 Goals and Milestones:

   Done         Working Group Last Call on 16ng problem statement, goal and 
                requirement 

   Done         Working Group Last Call on IPv6 over IPv6 CS transmission over 
                IEEE 802.16 networks 

   Done         Working Group Last Call on IPv6 subnet model analysis 

   Nov 2006       Submit 16ng problem statement, goal and requirement to IESG for 
                publication as Informational RFC 

   Done         Submit IPv6 over IPv6 CS transmission over IEEE 802.16 networks 
                to IESG for publication as Proposed Standard RFC 

   Dec 2006       Working Group Last Call on IPv4 over IPv4 CS transmission over 
                IEEE 802.16 networks 

   Dec 2006       Working Group Last Call on IP over Ethernet CS transmission 
                over IEEE 802.16 networks 

   Done         Submit IPv6 subnet model analysis to IESG for publication as 
                Informational RFC 

   Jan 2007       Submit IP over Ethernet CS transmission over IEEE 802.16 
                networks to IESG for publication as Proposed Standard RFC 

   Jan 2007       Submit IPv4 over IPv4 CS transmission over IEEE 802.16 networks 
                to IESG for publication as Proposed Standard RFC 

   Mar 2007       Working Group Last Call on IP deployment over IEEE 802.16 
                networks 

   Aug 2007       Submit IP deployment over IEEE 802.16 networks to IESG for 
                publication as Informational RFC 

   Aug 2007       Review on draft-ietf-mipshop-fh80216e to be ready to IESG in 
                conjunction with MIPSHOP WG 


 Internet-Drafts:

Posted Revised         I-D Title   <Filename>
------ ------- --------------------------------------------
Oct 2006 Jan 2007   <draft-ietf-16ng-ipv6-link-model-analysis-02.txt>
                Analysis of IPv6 Link Models for 802.16 based Networks 

Oct 2006 Feb 2007   <draft-ietf-16ng-ps-goals-01.txt>
                IP over 802.16 Problem Statement and Goals 

Oct 2006 Jan 2007   <draft-ietf-16ng-ipv6-over-ipv6cs-07.txt>
                IPv6 Over the IP Specific part of the Packet Convergence 
                sublayer in 802.16 Networks 

Dec 2006 Dec 2006   <draft-ietf-16ng-ip-over-ethernet-over-802.16-00.txt>
                Transmission of IP over Ethernet over IEEE 802.16 Networks 

 Request For Comments:

  None to date.