Fast Mobile IP Handovers over 802.16e Networks

1
Fast Mobile IP Handovers over 802.16e
Networks

• 
  
  Rajeev Koodli
• HeeJin Jang, Youn-Hee Han, Soohong Daniel Park,
  SAMSUNG
• Junghoon Jee, Jaesun Cha, ETRI

2
Background

• RFC 4068 Fast Handovers for Mobile IPv6
  specifies a protocol for reducing delay and
  eliminating packet loss associated with IP
  connectivity and Mobile IPv6 signaling
• draft-koodli-mip4-fmipv4-00.txt adapts RFC 4068
  operation for Mobile IPv4
• This talk is about Fast Handover over IEEE
  802.16e as described by the following drafts
• draft-jang-mipshop-fh80216e-00.txt
• draft-jee-mip4-fh80216e-01.txt

3
Fast Handovers
Learn new router information (RtSolPr, PrRtAdv)
Packet stream before handover
Mobile Node (MN)
Previous Access Router
Authorize new route (FBU)
Internet
Movement
New Access Router
Correspondent Node (CN)
Tunnel to new IP address (HI, HAck)
Announce attachment (FNA)
RFC 4068 Fast Handovers for Mobile IPv6
4
802.16e Handover Overview
Serving BS
Target BS
MN L2 (MS)
MOB_NBR-ADV(NB, NB_INFO)
MOB_SCN_REQ
Background Activity
MOB_SCN_RSP
Scanning
MOB_MSHO-REQ
Handover Preparation
MS Initiated Handover
MOB_BSHO-RSP
or
MOB_BSHO-REQ
BS Initiated Handover
MOB_HO-IND
Handover Execution
802.16e Network re-entry
Packets
5
Predictive Fast Handover over IEEE 802.16e
MN L3 L2
Serving BS/PAR
NAR/Target BS
MOB_NBR-ADV
Scanning
RtSolPr
PrRtAdv
MOB_MSHO-REQ
Link_Going_Down
MOB_BSHO-RSP
FBU
HI
HACK
FBACK
MOB_HO-IND
Packets
802.16e Network re-entry
Link_Up
FNA
MN does not need to wait for FBACK before sending
MOB_HO-IND
6
Reactive Fast Handover over IEEE 802.16e
MN L3 L2
Serving BS/PAR
NAR/Target BS
MOB_NBR-ADV
Scanning
RtSolPr
PrRtAdv
MOB_MSHO-REQ
Link_Going_Down
MOB_BSHO-RSP
MOB_HO-IND
802.16e Network re-entry
Link_Up
FNAFBU
FBU
Packets including FBACK