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STANDARDIZATION OF SOLUTIONS. Behcet Sarikaya sarikaya@ieee.org Huawei Research. Multimob Solutions. Two categories so far Agent-based Protocol-based Protocol solutions to modify MLDv2 MIPv6 HMIPv6 FMIPv6. Multicast tunneling optimization for Mobile IPv6. P.Yang, H. Deng, Q. Wu. - PowerPoint PPT Presentation
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IETF-70 in Vancouver 1
STANDARDIZATION
OF
SOLUTIONS
Behcet Sarikaya
sarikaya@ieee.org
Huawei Research
IETF-70 in Vancouver 2
Multimob Solutions
• Two categories so far– Agent-based– Protocol-based
• Protocol solutions to modify– MLDv2 – MIPv6– HMIPv6– FMIPv6
IETF-70 in Vancouver 3
Multicast tunneling optimization for Mobile IPv6
P.Yang, H. Deng, Q. Wu
IETF-70 in Vancouver 4
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 Vancouver 5
Mobile Multicast Agent
HA->MMA/AR MMA/AR ->MN
Tunnel format
Single Tunnel
IETF-70 in Vancouver 6
Call flow
IETF-70 in Vancouver 7
Agent-based multicast support for NEMO
D. Von Hugo
Deutsche Telecom
IETF-70 in Vancouver 8
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 Vancouver 9
Dynamic Selection of MAA at MR
• Potential locations of MAA
AR
MR
MNN
MR_HA
oAR
nAR
GW, LMA, ...CN
IETF-70 in Vancouver 10
Seamless Multicast Handover in a Hierarchical Mobile IPv6 Environment (M-HMIPv6)
T. Schmitt, M. Waehlisch
HAW Hamburg, FHTW Berlin
IETF-70 in Vancouver 11
Seamless Multicast Handover in a
HMIPv6 Environmentdraft-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
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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
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M-HMIPv6: Multicast Listener
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M-HMIPv6: MAP-Local Handover
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M-HMIPv6: Inter-MAP Handover
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M-HMIPv6: Completion
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Hybrid Subscription for Multicast Receiver Mobility in MIPv6
F. Xia, B. Sarikaya
Huawei Research
IETF-70 in Vancouver 18
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 Vancouver 19
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.
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