Junghoon%20Jee,%20ETRI

1
IP over 802.16 Problem Statement and
Goalsdraft-ietf-16ng-ps-goals-03

• Junghoon Jee, ETRI

2
Table of Contents

• Area Director Review
• Technical Amendments
• Editorial Amendments
• Current Status

3
Area Director Review

• Area Director, Jari reviewed draft-ietf-16ng-ps-go
  als-02
• Comments
• Technical comments 4
• Editorial comments 6

4
Technical Amendments

• Section 4.1 Root Problem
• Ethernet like link model part
• Comment
• Whats the real problem in realizing the Ethernet
  like link model in case of the Ethernet CS?
• Amendment
• Addition of the following sentence.
• There needs mechanisms like IEEE 802.1D to
  realize multicast and broadcast for Ethernet CS.

5
Technical Amendments (2)

• Section 4.2 IP CS Problems
• Address Resolution part
• Blocking ARP or the address resolution of NDP
  needs to be implemented by SS itself in an
  implementation manner.
• Comment
• No mention of such blocking in the
  ipv6-over-ipv6cs. Would blocking NDP packets
  break IPv6 NUD?
• Amendment
• Separate problem description for each IPv4 and
  IPv6
• Addition of the following sentences for IPv6
  case.
• For IPv6, address resolution is the function of
  IP layer and the IP reachability state is
  maintained through neighbor discovery packets.
  Therefore, blocking neighbor discovery packets
  would break the neighbor unreachability detection
  model.

6
Technical Amendments (3)

• Section 4.2 IP CS Problems (cont.)
• Nits are caused by the previous assumption of the
  shared prefix link model for IP CS.
• Router Discovery
• Texts about source address inclusion in the RS
• Neighbor Unreachability Detection
• Texts regarding multiple ARs existence
• Amendment
• All related parts are deleted.

7
Editorial Amendments

• Overall
• Reference correction to RFC4903
• Expand SDU to Service Data Unit
• Deletion of the Section 2. Requirements
• Clarification and correction
• Section 1. Introduction
• (CS) is at the uppermost part of the MAC
• Section 4.2 IP CS Problems
• Implementation manner specific fashion
• Section 4.3 Ethernet CS Problems
• However, if not filtered (e.g., RFC4541), this
  these multicast and broadcast packets results
  result in the problem of waking up the sleep/
  idle IEEE802.16e SSs.

8
Current Status

• draft-ietf-16ng-ps-goals-03 was submitted
  reflecting the ADs comments and resolution.
• AD passed this version to the IESG.
• Please send comments by 2007-12-10.

9
Authors and Acknowledgment

• Authors
• Junghoon Jee, ETRI (Editor)
• Syam Madanapalli, LogicaCMG
• Jeff Mandin, Runcom
• Gabriel Montenegro, Microsoft
• Soohong Park, Samsung Electronics
• Max Riegel, NSN
• Acknowledgment
• David Johnston for amending the section 4,
  "Overview of the IEEE 802.16-2006 MAC layer" and
  carefully reviewing the entire document
• Phil Roberts for suggesting the reorganization of
  the document depending on the baseline IP subnet
  models.
• Jari Arkko for AD review by carefully reviewing
  the entire document.
• HeeYoung Jung, Myung-Ki Shin, Eun-Kyoung Paik,
  Jaesun Cha and KWISF (Korea Wireless Internet
  Standardization Forum) for their contribution.