FMIPv6 over IEEE 802'16 draftjangmipshopfh8021600'txt - PowerPoint PPT Presentation
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FMIPv6 over IEEE 802'16 draftjangmipshopfh8021600'txt
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HeeJin Jang, Youn-Hee Han, Soohong Daniel Park. SAMSUNG. Junghoon Jee, ... Contents - IETF 64 - 3 /9. 802.16 Deployment Architectures. IP Mobility is required ... – PowerPoint PPT presentation
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Title: FMIPv6 over IEEE 802'16 draftjangmipshopfh8021600'txt
1
FMIPv6 over IEEE 802.16 (draft-jang-mipshop-fh802
16-00.txt)
- HeeJin Jang, Youn-Hee Han, Soohong Daniel Park
- SAMSUNG
- Junghoon Jee, Jaesun Cha
- ETRI
2
Contents
- 802.16 Deployment Architectures
- 802.16 Handover Overview
- Change points
- Two New Primitives
- Handover Scenarios
- Implementation with 802.21 MIHF
- QA
3
802.16 Deployment Architectures
IP Mobility is required
IP Mobility is required
Fig. (a) a subnet one AR several BSs
Fig. (b) a subnet one AR one BS
4
802.16e Handover Overview
- MN collects info. about the serving BS and
neighboring BSs through the periodic L2 neighbor
advertisement and the scanning. - MN starts HO by sending MOB_MSHO-REQ to BS and
then BS replies with MOB_BSHO-RSP including the
candidates BSs. - MN selects the target BS and then sends the
MOB_HO-IND to the serving BS and switches the
links - After the HO, MN performs the network re-entry
procedures.
Target BS
Serving BS
MN L2 (MS)
MOB_NBR-ADV
MOB_SCN_REQ
MOB_SCN_RSP
Scanning
MOB_MSHO-REQ
MOB_BSHO-RSP
MOB_HO-IND
802.16e Network re-entry
Packets
5
Change points
- Changes from the initial presentation
- Two more primitives are defined
- Five HO steps are changed into four HO steps
- Implementation with 802.21 MIHF (Media
Independent Handover Function) is described
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Four Primitives for interaction of FMIPv6
802.16e
- We defined two more primitives, New_BS_Found and
Link_Switch - New_BS_Found is triggered from L2 to L3 when new
BS is detected in order that the MN starts the
NAR discovery by exchange of RtSolPr PrRtAdv - Link_Switch is introduced to notify L2 of L3 HO
preparation completion - By default, L2 doesnt need to wait this
primitive - It could be implemented to make higher the
possibility of predictive HO
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L2/L3 Handover Scenarios
- Conceptually divided into four steps 5 steps gt
4 steps - 802.16 network entry step is integrated into HO
execution step
- NAR Discovery
- MN learns the neighboring BSs
- NAR IP address resolution with BSID after getting
(1) - HO Preparation
- MN requests HO and gets the reply back from the
BS and triggers (2) - Tunnel is setup and packets are redirected to NAR
- NCoA is confirmed
- HO Execution
- After the arrival of FBAck, MN issues (3).
- MN L2 sends HO indication to the serving BS and
switches the links - IEEE 802.16e network entry
- HO Completion
- MN sends FNA and receives the buffered packets
from NAR
1) New_BS_Found 2) Link_Going_Down 3)
Link_Switch 4) Link_UP
8
Implementation with 802.21 MIHF
- MIH function services
- MI Event service (MIES)
- MI Command service (MICS)
- MI Information service (MIIS)
- If the terminal is equipped with MIHF module, the
proposed primitives can be implemented to
cooperate with 802.21 MIHF
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Future Works
- We assumed that Neighbor discovery over 802.16
networks works well. - We need to consider the problems which may also
cause mal-operation in FMIPv6.
