1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-13-0175-00-MISU
Title: Interworking Use Case for Multicast
Date Submitted: September 17, 2013
Presented at IEEE session #58 in Nanjing
Authors or Source(s):
 Yusuke Doi (Toshiba) and Yoshihiro Ohba (Toshiba), Ruben Salazar (Landis+Gyr)
Abstract: This contribution describes a new interworking use case for multicast.
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2. General Problem
There are a few of multicast use cases for AMI (Advance Metering Infrastructure) networks, as being addressed in d
Firmware/Configuration update
Failover/Failback
Broadcast and multicast in the mesh topology can be traffic intense
In order to avoid broadcast/multicast storm, some sort of rate control is employed for an existing mesh multicast mechanism
As a result of rate control, mesh multicast can be slow
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3. IEEE 802.21 presentation release statements
This document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE
The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws < and in Understanding Patent Issues During IEEE Standards Development
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4. Background: Trickle Multicast (IETF RFC6206)
To avoid congestion and contention, a relaying node waits random time before re-sending a received message. It has to cancel retransmission if it receives k duplicate copies.
Topology for Example N0 N1 N2 N3 N4 N0
Interval (constant) N1
random
cancelled
Delay in wireless large-scale broadcast is inevitable because of trickle-like timers
How to disseminate a message quickly in large-scale mesh network? N2
random
Interval (constant) N3
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5. Mesh Network Too Large Too far to deliver it in time
DAP: Data Aggregation Point
hop count: 0(seed) and over
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6. Smaller Radius with Tunneling over Heterogeneous Network
Can be delivered in time
virtual link over alternate link
hop count: 0(seed) and over
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7. with appropriate tunnel
Sender
Forwarder
Forwarder
Forwarder
Forwarder
Forwarder
Forwarder
wait
wait
without tunnel
wait
wait
wait
Tunnel over virtual link
wait
wait
wait
wait
with appropriate tunnel
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