IP over IEEE 802.16 Problem Statement and Goals
RFC 5154

Document Type RFC - Informational (April 2008; No errata)
Last updated 2013-03-02
Replaces draft-jee-16ng-ps-goals
Stream IETF
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Stream WG state (None)
Consensus Unknown
Document shepherd No shepherd assigned
IESG IESG state RFC 5154 (Informational)
Telechat date
Responsible AD Jari Arkko
Send notices to 16ng-chairs@ietf.org, draft-ietf-16ng-ps-goals@ietf.org
Network Working Group                                        J. Jee, Ed.
Request for Comments: 5154                                          ETRI
Category: Informational                                   S. Madanapalli
                                                      Ordyn Technologies
                                                               J. Mandin
                                                                  Runcom
                                                              April 2008

            IP over IEEE 802.16 Problem Statement and Goals

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Abstract

   This document specifies problems in running IP over IEEE 802.16
   networks by identifying specific gaps in the IEEE 802.16 Media Access
   Control (MAC) for IPv4 and IPv6 support.  This document also provides
   an overview of IEEE 802.16 network characteristics and convergence
   sublayers.  Common terminology used for the base guideline while
   defining the solution framework is also presented.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Overview of the IEEE 802.16 MAC Layer  . . . . . . . . . . . .  4
     3.1.  Transport Connections  . . . . . . . . . . . . . . . . . .  4
     3.2.  IEEE 802.16 PDU Format . . . . . . . . . . . . . . . . . .  5
     3.3.  IEEE 802.16 Convergence Sublayer . . . . . . . . . . . . .  5
   4.  IP over IEEE 802.16 Problem Statement and Goals  . . . . . . .  6
     4.1.  Root Problem . . . . . . . . . . . . . . . . . . . . . . .  6
     4.2.  Point-to-Point Link Model for IP CS: Problems  . . . . . .  8
     4.3.  Ethernet-Like Link Model for Ethernet CS: Problems . . . .  9
     4.4.  IP over IEEE 802.16 Goals  . . . . . . . . . . . . . . . . 10
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   6.  Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 11
   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 11
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 12
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 12

Jee, et al.                  Informational                      [Page 1]
RFC 5154              IP over 802.16 PS and Goals             April 2008

1.  Introduction

   Broadband Wireless Access networks address the inadequacies of low
   bandwidth wireless communication for user requirements such as high
   quality data/voice service, fast mobility, 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 [IEEE802.16].

   Recently the WiMAX Forum, and in particular, its NWG (Network Working
   Group) is defining the IEEE 802.16 network architecture (e.g., IPv4,
   IPv6, Mobility, Interworking with different networks, AAA, etc.).
   The NWG is thus taking on work at layers above those defined by the
   IEEE 802 standards (typically limited to the physical and link-layers
   only).  Similarly, WiBro (Wireless Broadband), a Korean effort, which
   focuses on the 2.3 GHz spectrum band, is also based on the IEEE
   802.16 specification [IEEE802.16].

   IEEE 802.16 [IEEE802.16] is point-to-point and connection-oriented at
   the MAC, physically arranged in a point-to-multipoint structure with
   the Base Station (BS) terminating one end of each connection and an
   individual Subscriber Station (SS) terminating the other end of each
   connection.  The IEEE 802.16 convergence sublayer (CS) is at the
   uppermost part of the MAC that is responsible for assigning transmit-
   direction Service Data Units (originating from a higher layer
   application, e.g., IP or Ethernet at the BS or SS) to a specific
   outbound transport connection.  IEEE 802.16 defines two convergence
   sublayer types, the ATM Convergence Sublayer (CS) and the Packet CS.
   The IP Specific Subpart (IP CS) and the 802.3 Ethernet Specific
   Subpart (Ethernet CS) of Packet CS are within the current scope of
   IETF efforts.

   There is complexity in configuring the IP Subnet over IEEE 802.16
   network because of its point-to-point connection-oriented feature and
   the existence of IP CS and Ethernet CS, which assume different
   higher-layer functionality.  An IP Subnet is a topological area that
   uses the same IP address prefix where that prefix is not further
   subdivided except into individual addresses as specified in
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