STANDARDIZATION OF SOLUTIONS

1
STANDARDIZATION OF SOLUTIONS

• Behcet Sarikaya
• sarikaya_at_ieee.org
• Huawei Research

2
Multimob Solutions

• Two categories so far
• Agent-based
• Protocol-based
• Protocol solutions to modify
• MLDv2
• MIPv6
• HMIPv6
• FMIPv6

3
Multicast tunneling optimization for Mobile IPv6

• P.Yang, H. Deng, Q. Wu

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.

5
Mobile Multicast Agent
Single Tunnel
Tunnel format
HA-gtMMA/AR
MMA/AR -gtMN
6
Call flow
7
Agent-based multicast support for NEMO

• D. Von Hugo
• Deutsche Telecom

8
Multicast Anchor Agent for NEMO
draft-von-hugo-multimob-agents-01

• 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

9
Dynamic Selection of MAA at MR

• Potential locations of MAA

MR_HA
GW, LMA, ...
CN
oAR
nAR
AR
MR
MNN
10
Seamless Multicast Handover in a Hierarchical
Mobile IPv6 Environment (M-HMIPv6)

• T. Schmitt, M. Waehlisch
• HAW Hamburg, FHTW Berlin

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

12
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

13
M-HMIPv6 Multicast Listener
14
M-HMIPv6 MAP-Local Handover
15
M-HMIPv6 Inter-MAP Handover
16
M-HMIPv6 Completion
17
Hybrid Subscription for Multicast Receiver
Mobility in MIPv6

• F. Xia, B. Sarikaya
• Huawei Research

18
Hybrid Subscription
draft-xia-multimob-hybrid-00.txt

• 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 users
  profile, local policy and so on

HA(LMA)
Rendezvous Point
Home Subscription
Remote Subscription
AR
MN
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.