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FMIPv6 over IEEE 802.16 (draft-jang-mipshop-fh80216-00’.txt)

FMIPv6 over IEEE 802.16 (draft-jang-mipshop-fh80216-00’.txt). HeeJin Jang, Youn-Hee Han, Soohong Daniel Park SAMSUNG Junghoon Jee, Jaesun Cha ETRI. Contents. 802.16 Deployment Architectures 802.16 Handover Overview Change points Two New Primitives Handover Scenarios

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FMIPv6 over IEEE 802.16 (draft-jang-mipshop-fh80216-00’.txt)

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  1. FMIPv6 over IEEE 802.16 (draft-jang-mipshop-fh80216-00’.txt) HeeJin Jang, Youn-Hee Han, Soohong Daniel Park SAMSUNG Junghoon Jee, Jaesun Cha ETRI - IETF 64 -

  2. Contents • 802.16 Deployment Architectures • 802.16 Handover Overview • Change points • Two New Primitives • Handover Scenarios • Implementation with 802.21 MIHF • Q&A - IETF 64 -

  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 - IETF 64 -

  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. Serving BS Target 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 - IETF 64 -

  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 - IETF 64 -

  6. 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 doesn’t need to wait this primitive • It could be implemented to make higher the possibility of predictive HO - IETF 64 -

  7. < NAR discovery> <HO preparation> <HO execution> <HO completion> L2/L3 Handover Scenarios • Conceptually divided into four steps: 5 steps => 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 - IETF 64 -

  8. 802.16e MIHF MN FMIPv6 Link_Detected (E) New_BS_Found New BS detected Link_Going_Down (E) Link_Going_Down Link goes down MIH_Switch (C) Link_Switch L3 HO preparation is completed Link_Up (E) Link_Up Link up 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 - IETF 64 -

  9. 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. - IETF 64 -

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