Optionally, the pAR could perform selection of an appropriate new AR
on behalf of the MN after the pAR has the MN’s CARs’ addresses and
associated capabilities available. The MN must send its requirements
for the selection process to its pAR together with the MN-AR CARD
Request message After the pAR has selected the MN’s new AR, the
address and associated capabilities of the chosen new AR are sent to
the MN with the CARD Reply option in the Fast Mobile IPv6 PrRtAdv
message.
Figure B.3 illustrates how CARD protocol messages and functions work
with the Fast Mobile IPv6 protocol.
MN pAR NAR CAR2
| | as CAR1 |
| | | |
|-------RtSolPr------>| | |
| [MN-AR CARD Req] |-- AR-AR CARD Req*->| |
| |-- AR-AR CARD Req*------------>|
| |<--AR-AR CARD Repl*------------|
| |<--AR-AR CARD Repl*-| |
|<------PrRtAdv-------| | |
| [MN-AR CARD Repl] | | |
| | | |
NAR selection | | |
|------F-BU---------->|--------HI--------->| |
| |<------HACK---------| |
| <--F-BACK--|--F-BACK--> | |
| | | |
Disconnect | | |
| forward | |
| packets===============>| |
| | | |
| | | |
Connect | | |
| | | |
RS (with FNA option)======================>| |
|<-----------RA (with NAACK option)--------| |
|<=================================== deliver packets |
| | |
Figure B.3. Fast Handover Protocol Sequence with
CARD Protocol Options
* In Figure B.3, the CARD protocol interaction between the pAR and
CARs is only required if the lifetime of any capability entries in
the pAR’s CAR table have expired. Otherwise, the pAR can respond
to the requesting MN immediately after retrieving the CARs’
addresses and capability information from its CAR table.
Authors’ Addresses
Hemant Chaskar
AirTight Networks
339 N. Bernardo Avenue
Mountain View, CA 94043, USA
EMail: hemant.chaskar@airtightnetworks.net
Daichi Funato
NTT DoCoMo, Inc.
Communication Systems Laboratory
Wireless Laboratories
3-5, Hikarinooka, Yokosuka,
Kanagawa 239-8536, Japan
Phone: +81-46-840-3921
EMail: funato@mlab.yrp.nttdocomo.co.jp
Marco Liebsch
NEC Network Laboratories
Kurfuersten-Anlage 36,
69115 Heidelberg, Germany
Phone: +49 6221-90511-46
EMail: marco.liebsch@netlab.nec.de
Eunsoo Shim
Panasonic Digital Networking Laboratory
Panasonic Corporation
Two Research Way
Princeton, NJ 08540
Phone: +1-609-734-7354
EMail: eunsoo@research.panasonic.com
Ajoy Singh
Motorola Inc
2G11, 1501 West Shure Dr.
Arlington Heights, IL 60004, USA
Phone: +1 847-632-6941
EMail: asingh1@email.mot.com
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