Browse Prior Art Database

Fast Handovers for Mobile IPv6 (RFC4068)

IP.com Disclosure Number: IPCOM000126208D
Original Publication Date: 2005-Jul-01
Included in the Prior Art Database: 2005-Jul-07
Document File: 43 page(s) / 94K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Koodli: AUTHOR [+2]

Abstract

Mobile IPv6 enables a Mobile Node to maintain its connectivity to the Internet when moving from one Access Router to another, a process referred to as handover. During handover, there is a period during which the Mobile Node is unable to send or receive packets because of link switching delay and IP protocol operations. This "handover latency" resulting from standard Mobile IPv6 procedures, namely movement detection, new Care of Address configuration, and Binding Update, is often unacceptable to real-time traffic such as Voice over IP. Reducing the handover latency could be beneficial to non-real- time, throughput-sensitive applications as well. This document specifies a protocol to improve handover latency due to Mobile IPv6 procedures. This document does not address improving the link switching latency.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 3% of the total text.

Network Working Group                                     R. Koodli, Ed.
Request for Comments: 4068                         Nokia Research Center
Category: Experimental                                         July 2005


                     Fast Handovers for Mobile IPv6

Status of This Memo

   This memo defines an Experimental Protocol for the Internet
   community.  It does not specify an Internet standard of any kind.
   Discussion and suggestions for improvement are requested.
   Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   Mobile IPv6 enables a Mobile Node to maintain its connectivity to the
   Internet when moving from one Access Router to another, a process
   referred to as handover.  During handover, there is a period during
   which the Mobile Node is unable to send or receive packets because of
   link switching delay and IP protocol operations.  This "handover
   latency" resulting from standard Mobile IPv6 procedures, namely
   movement detection, new Care of Address configuration, and Binding
   Update, is often unacceptable to real-time traffic such as Voice over
   IP.  Reducing the handover latency could be beneficial to non-real-
   time, throughput-sensitive applications as well.  This document
   specifies a protocol to improve handover latency due to Mobile IPv6
   procedures.  This document does not address improving the link
   switching latency.


Koodli, Ed.                   Experimental                      [Page 1]
RFC 4068             Fast Handovers for Mobile IPv6            July 2005


Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology. . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Protocol Overview. . . . . . . . . . . . . . . . . . . . . . .  5
       3.1.  Addressing the Handover Latency. . . . . . . . . . . . .  5
       3.2.  Protocol Operation . . . . . . . . . . . . . . . . . . .  7
       3.3.  Protocol Operation of Network-initiated Handover . . . .  9
   4.  Protocol Details . . . . . . . . . . . . . . . . . . . . . . . 10
   5.  Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . . 15
       5.1.  Handover Capability Exchange . . . . . . . . . . . . . . 15
       5.2.  Determining New Care of Address. . . . . . . . . . . . . 15
       5.3.  Packet Loss. . . . . . . . . . . . . . . . . . . . . . . 15
       5.4.  DAD Handling . . . . . . . . . . . . . . . . . . . . . . 16
       5.5.  Fast or Erroneous Movement . . . . . . . . . . . . . . . 16
   6.  Message Formats. . . . . . . . . . . . . . . . . . . . . . . . 17
       6.1.  New Neighborhood Discovery...