rfc3002.txt

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Network Working Group                                          D. Mitzel
Request for Comments: 3002                                         Nokia
Category: Informational                                    December 2000


         Overview of 2000 IAB Wireless Internetworking Workshop

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.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   This document provides an overview of a workshop held by the Internet
   Architecture Board (IAB) on wireless internetworking.  The workshop
   was hosted by Nokia in Mountain View, CA, USA on February 29 thru
   March 2, 2000.  The goal of the workshop was to assess current and
   future uses of Internet technology in wireless environments, to make
   recommendations on research and standardization tasks to improve
   acceptance of Internet network and transport protocols in wireless
   environments, and to evaluate methods to improve communication and
   collaboration among Internet standards working groups and those of
   the telephony and wireless sectors.  This report summarizes the
   conclusions and recommendations of the IAB on behalf of the IETF
   community.

   Comments should be submitted to the [e-mail]
   mailing list.

Table of Contents

   1      Introduction  . . . . . . . . . . . . . . . . . . . .   3
   2      Presentation Overview . . . . . . . . . . . . . . . .   4
   3      Discussion and Observations . . . . . . . . . . . . .   9
   3.1    Discussion on "Walled Garden" Service Model . . . . .   9
   3.2    Discussion on Mobility and Roaming  . . . . . . . . .  10
   3.2.1  Discussion on Mobility and Roaming Model  . . . . . .  11
   3.2.2  Discussion on Mobility and Roaming Protocols  . . . .  11
   3.2.3  Discussion on Mobility and Roaming Services . . . . .  12
   3.3    Discussion on Security Model  . . . . . . . . . . . .  12
   3.3.1  Discussion on User Identity . . . . . . . . . . . . .  12
   3.3.2  Discussion on WAP Security  . . . . . . . . . . . . .  13



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RFC 3002                 IAB Wireless Workshop             December 2000


   3.3.3  Discussion on 3G Network Security . . . . . . . . . .  13
   3.4    Discussion on Transports  . . . . . . . . . . . . . .  14
   3.4.1  Discussion on Link Characteristics and Mobility
          Effect on Transport . . . . . . . . . . . . . . . . .  14
   3.4.2  Discussion on WAP Transport . . . . . . . . . . . . .  16
   3.4.3  Discussion on IETF Transport Activities . . . . . . .  16
   3.5    Discussion on Aeronautical Telecommunication Network
          (ATN) Routing Policy. . . . . . . . . . . . . . . . .  17
   3.6    Discussion on QoS Services  . . . . . . . . . . . . .  18
   3.6.1  Discussion on "Last Leg" QoS  . . . . . . . . . . . .  18
   3.6.2  Discussion on Path QoS Discovery  . . . . . . . . . .  19
   3.7    Discussion on Header Compression  . . . . . . . . . .  20
   3.8    Discussion on Applications Protocols  . . . . . . . .  21
   3.9    Discussion on Proxy Agents  . . . . . . . . . . . . .  22
   3.10   Discussion on Adoption of IPv6  . . . . . . . . . . .  22
   3.11   Discussion on Signaling . . . . . . . . . . . . . . .  23
   3.12   Discussion on Interactions Between IETF and Other
          Standards Organizations . . . . . . . . . . . . . . .  24
   4      Recommendations . . . . . . . . . . . . . . . . . . .  25
   4.1    Recommendations on Fostering Interaction with Non-
          Internet Standards Organizations  . . . . . . . . . .  25
   4.2    Recommendations for Dealing with "Walled Garden"
          Model . . . . . . . . . . . . . . . . . . . . . . . .  26
   4.3    Recommendations on IPv4 and IPv6 Scaling  . . . . . .  27
   4.4    Recommendations on IPv4 and IPv6 Mobility . . . . . .  28
   4.5    Recommendations on TCP and Transport Protocols  . . .  29
   4.6    Recommendations on Routing  . . . . . . . . . . . . .  31
   4.7    Recommendations on Mobile Host QoS Support  . . . . .  32
   4.8    Recommendations on Application Mobility . . . . . . .  33
   4.9    Recommendations on TCP/IP Performance Characterization
          in WAP-like Environment . . . . . . . . . . . . . . .  33
   4.10   Recommendations on Protocol Encoding  . . . . . . . .  33
   4.11   Recommendations on Inter-Domain AAA Services  . . . .  34
   4.12   Recommendations on Bluetooth  . . . . . . . . . . . .  34
   4.13   Recommendations on Proxy Architecture . . . . . . . .  34
   4.14   Recommendations on Justifying IPv6-based Solutions for
          Mobile / Wireless Internet  . . . . . . . . . . . . .  35
   5      Security Considerations . . . . . . . . . . . . . . .  35
   6      Acknowledgments . . . . . . . . . . . . . . . . . . .  35
   7      Bibliography  . . . . . . . . . . . . . . . . . . . .  36
   A      Participants  . . . . . . . . . . . . . . . . . . . .  41
   B      Author's Address  . . . . . . . . . . . . . . . . . .  41
          Full Copyright Statement  . . . . . . . . . . . . . .  42








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RFC 3002                 IAB Wireless Workshop             December 2000


1 Introduction

   Wireless technology, including wireless LANs, data transfer over
   cellular radio (GSM, 3GPP, etc), and mobile operations from aircraft
   and near earth spacecraft are becoming increasingly important.  Some
   market projections suggest that a mobile Internet in parallel with or
   augmenting the wired Internet may be comparable in size to the wired
   Internet as early as 2003.

   The wireless operators have not, however, chosen to use IPv4, TCP,
   full HTTP/HTML, and other applications for a variety of reasons.
   These relate to edge device cost, bandwidth limitations, perceived
   protocol imperfections, unnecessary complexities, the chattiness of
   the application protocols, and network layer addressing issues.
   Unfortunately, this creates some serious issues at the wired/wireless
   demarcation: end to end operation is sacrificed, security is
   compromised, and automated content modification in some form becomes
   necessary.  The IAB considers these to be serious fundamental issues,
   which will in time be a serious impediment to the usability of the
   combined Internet if not addressed.

   The Internet Architecture Board (IAB), on February 29 thru March 2,
   2000, held an invitational workshop on wireless internetworking.  The
   goal of the workshop was to assess current and future uses of
   Internet technology in wireless environments, to make recommendations
   on research and standardization tasks to improve acceptance of
   Internet network and transport protocols in wireless environments,
   and to evaluate methods to improve communication and collaboration
   among Internet standards working groups and those of the telephony
   and wireless sectors.

   The following topics were defined for discussion:

        + Local area wireless technologies

        + Cellular wireless technologies

        + Wireless Application Protocol (WAP)

        + Near-space and aviation wireless applications

        + Voice over IP (VoIP) over wireless networks

        + Security over wireless networks

        + Transport and QoS over wireless networks

        + Use of WWW protocols over wireless and small screen devices



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RFC 3002                 IAB Wireless Workshop             December 2000


        + Addressing requirements for wireless devices

        + Compression and bit error requirements for wireless networks

   The fundamental question addressed in these discussion is "what are
   the issues, and what really needs to be done to unify the Internet
   below the application layer."  Applications will also need to be
   addressed, but were perceived to be more than could be usefully
   discussed in a three-day workshop, and probably require different
   expertise.

   Section 2 presents a concise overview of the individual presentations
   made during the workshop.  References to more extensive materials are
   provided.  Details on major discussion topics are provided in section
   3.  Section 4 presents the recommendations made to wireless
   operators, IRTF, and IETF on the architectural roadmap for the next
   few years.  It should be noted that not all participants agreed with
   all of the statements, and it was not clear whether anyone agreed
   with all of them.  However, the recommendations made are based on
   strong consensus among the participants.  Finally, section 5
   highlights references to security considerations discussed, appendix
   A lists contact information of workshop participants, and appendix B
   lists the author contact information.

2 Presentation Overview

      Title: Overview of Wireless IP Devices (Network Implications...)

      Presenter: Heikki Hammainen

      Reference:
           http://www.iab.org/IAB-wireless-workshop/talks/hh-IABpub.PDF,
           http://www.iab.org/IAB-wireless-workshop/talks/hh-IABpub.ppt

      Overview:

      Title: Overview of IEEE 802.11 Wireless LAN's & Issues Running IP
           over IEEE 802.11?

      Presenter: Juha Ala-Laurila

      Reference:
           http://www.iab.org/IAB-wireless-work-
           shop/talks/IEEE80211_IP.ppt

      Overview:





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RFC 3002                 IAB Wireless Workshop             December 2000


      Title: Overview of Bluetooth Wireless & Issues Running IP over
           Bluetooth?

      Presenter: Pravin Bhagwat

      Reference:
           http://www.iab.org/IAB-wireless-workshop/talks/BT-
           overview.PDF,
           http://www.iab.org/IAB-wireless-workshop/talks/BT-
           overview.ppt

      Overview:

      Title: Overview of Cellular Data Systems & Approaches to more IP
           centric Cellular Data System

      Presenter: Jonne Soinien

      Reference:
           http://www.iab.org/IAB-wireless-workshop/talks/
           Cellular_JSo.PDF,
           http://www.iab.org/IAB-wireless-workshop/talks/
           Cellular_JSo.ppt

      Overview:

      Title: IP Packet Data Service over IS-95 CDMA

      Presenter: Phil Karn

      Reference:
           http://www.iab.org/IAB-wireless-workshop/talks/karn/index.htm

      Overview:

      Title: Wireless Internet Networking

      Presenter: Chih-Lin I

      Reference:
           http://www.iab.org/IAB-wireless-workshop/talks/IAB000229.PDF,
           http://www.iab.org/IAB-wireless-workshop/talks/IAB000229.ppt

      Overview:

      Title: Mobile IP in Cellular Data Systems

      Presenter: Charlie Perkins



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RFC 3002                 IAB Wireless Workshop             December 2000