IETF-70 in Vancouver1 STANDARDIZATION OF SOLUTIONS Behcet Sarikaya Huawei Research

IETF-70 in Vancouver2 Multimob Solutions Two categories so far –Agent-based –Protocol-based Protocol solutions to modify –MLDv2 –MIPv6 –HMIPv6 –FMIPv6

IETF-70 in Vancouver3 Multicast tunneling optimization for Mobile IPv6 P.Yang, H. Deng, Q. Wu

IETF-70 in Vancouver4 Solution to optimize multicast routing in RFC3775 Two ways to do multicast routing in RFC3775 –Remote multicast subscription: It relies on multicast router, which is seldom available in the mobile network. It also suffers from the slow handover –Bi-directional tunneling: Simple and transparent. It suffers from multiple tunnel overhead. The solution is proposed to optimize the bi- directional tunneling multicast solution of MIPv6. With simple extension, this solution could also be applied to other extended MIPv6 (PMIP, DSMIP, HMIP) as well.

IETF-70 in Vancouver5 Mobile Multicast Agent HA->MMA/ARMMA/AR ->MN Tunnel format Single Tunnel

IETF-70 in Vancouver6 Call flow

IETF-70 in Vancouver7 Agent-based multicast support for NEMO D. Von Hugo Deutsche Telecom

IETF-70 in Vancouver8 Multicast Anchor Agent for NEMO Agent approach adapted to support multicast listeners and senders located within a moving IPv6 network (NEMO) –NEMO: Mobile Router (MR) handles all routing related tasks to provide connectivity between the Mobile Network Nodes (MNNs) and an access network including mobility management –MR also subscribes to multicast groups and forwards emerging multicast traffic on behalf of a MNN. Hierarchical multicast agent as logical entity providing an anchor to multicast tree for optimised routing of multicast data MR with corresponding functionality to decide on proper specific agent for distinct multicast traffic Decision and selection of MAA location is done by MR specifically for each multicast flow as a function of traffic characteristic (send, receive, session duration,...) MR movement (HO rate) and multicast tree path distance as criteria Potential MAA locations are –MR HA –Current, former (old) or future (new) AR (AR/oAR/nAR) –Dedicated hierarchical multicast agent (e.g. at Gateway/GW or Local Mobility Agent/LMA) Forwarding of Multicast traffic and group management messages via tunnel between MR and MAA draft-von-hugo-multimob-agents-01

IETF-70 in Vancouver9 Dynamic Selection of MAA at MR Potential locations of MAA AR MR MNN MR_HA oAR nAR GW, LMA,... CN

IETF-70 in Vancouver10 Seamless Multicast Handover in a Hierarchical Mobile IPv6 Environment (M-HMIPv6) T. Schmitt, M. Waehlisch HAW Hamburg, FHTW Berlin

IETF-70 in Vancouver11 Seamless Multicast Handover in a HMIPv6 Environment draft-schmidt-waehlisch-mhmipv6-04 Agent based solution: MAP as Multicast agent Built on Hierarchical MIPv6 (HMIPv6) Extends signalling of HMIPv6 by multicast advertisement flag MAP provides –Regional tunnelling (shield multicast- agnostic regions) –Native multicast forwarding –Handover assistance

IETF-70 in Vancouver12 M-HMIPv6 (2) On Handovers for mobile listeners: –Micro mobile handovers hidden by MAP –Reactive handovers between MAPs, assisted by inter-MAP tunnel Two forwarding modes –Unicast (tunnel) forwarding MN : MAP –Option for remote subscription with MAP attendance –Relies on MLD extension: multicast query with attendance flag facilitates MAP attendance without forwarding Third forwarding mode in preparation –Native forwarding without MLD modifications

IETF-70 in Vancouver13 M-HMIPv6: Multicast Listener

IETF-70 in Vancouver14 M-HMIPv6: MAP-Local Handover

IETF-70 in Vancouver15 M-HMIPv6: Inter-MAP Handover

IETF-70 in Vancouver16 M-HMIPv6: Completion

IETF-70 in Vancouver17 Hybrid Subscription for Multicast Receiver Mobility in MIPv6 F. Xia, B. Sarikaya Huawei Research

IETF-70 in Vancouver18 Hybrid Subscription AR HA(LMA) Rendezvous Point MN subscribes multicast service through Home agent at first. MN changes its subscription router to a local multicast router if the same multicast services are available Availability is assured by Home Subscription, while optimality is assured by Remote Subscription. MN switches subscription modes based on user’s profile, local policy and so on MN Home Subscription Remote Subscription draft-xia-multimob-hybrid-00.txt

IETF-70 in Vancouver19 MLD Backward Compatible Extension Multicast Listener Hold-Release. This message is to notify a multicast router (e.g. HA) to stop forwarding multicast data for the groups specified, but still maintain the multicast membership on that interface Multicast Listening State Advertisement. This unsolicited message is sent by multicast routers to advertise available multicast services. MN can switch between Home Subscription and Remote Subscription based on this message.