1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-10-0061-02-srho
Title: IETF NETEXT Overview and Relationship with c
Date Submitted: May 10, 2010
Presented at IEEE session #38 in Bangalore, India
Authors or Source(s):
 Juan Carlos Zuniga (InterDigital)
Antonio de la Oliva, Carlos Bernardos (UC3M)
Telemaco Melia (Alcatel-Lucent)
Abstract: Overview of IETF activities in the NETEXT group and the relationship with current c activities
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2. IEEE 802.21 presentation release statements
This document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE
The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws < and in Understanding Patent Issues During IEEE Standards Development
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3. IETF NETEXT Overview and Relationship with 802.21c
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4. Proxy Mobile IP Proxy Mobile IP standardized in NETLMM
Provides roaming within a PMIP domain without changing IP address
It provides also a limited multi-homing support to multi-mode devices
Initial assumption
Changes in the IP stack are undesirable
How do we provide more advance features while using PMIP, without changing the IP stack?
Inter-access handover
Flow mobility
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5. NETEXT Working on PMIP extensions: Localized routing Bulk refresh
LMA redirection
Radius Extensions
Hiding access technology changes from IP
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6. Hiding L2 changes to the IP stack
Layer 2 techniques hiding the actual physical interface being used by the IP layer
Link layer support
Logical interface
Layer 2.5
Assumption: an IP layer interface is able to simultaneously and/or sequentially attach to different MAGs
Applicability statement
Draft bernardos
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7. Logical Interface
Solutions bonding multiple interfaces so they appear to the IP layer as a single interface
Application sockets are bond to this logical interface
It allows:
Simultaneous use of multiple interfaces
Fail over mechanisms
Simultaneous attachment to different media
One Interface to rule them all!
APP 1
APP 2
APP 3
TCP/IP
Logical Interface
WiFi
WiMAX
3GPP
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8. Active TCP/IP Interface
Layer 2.5
Single Radio Handover application
There is only one active interface at IP layer
can help PMIP when dealing with inter-access technology changes and mobile-based triggers
APP 1
APP 2
APP 3
IEEE
Active TCP/IP Interface
TCP/IP
TCP/IP
TCP/IP
WiFi
WiMAX
3GPP
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9. Intersection between NETEXT and IEEE 802.21
can help PMIP for inter-access technology handovers
Flow mobility is a network-based solution and the mobile can only be reactive to changes from the LMA
802.21c can be used as a tool to communicate link layer changes from the mobile to the LMA
RFC5677 can provide the required link-layer information over a L3 transport
A solution would greatly benefit the single radio handover work being carried out by c
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10. PMIP+IEEE 802.21 (Future 802.21c?) PoS at LMA
Mobility of the user can be managed in one central point, the LMA
can be used to transport link layer identifiers, link layer triggers, etc.
One PoS located in the LMA
Just one subscription is required for all interfaces and IP flows
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