A Multicast Protocol based on Zone Routing


  Zone Routing.ppt (Size: 153 KB / Downloads: 0)

Introduction to MZR:

What is MZR?
It’s a source initiated on-demand multicast routing protocol
Builds a multicast delivery tree rooted at the source based on the zone routing protocol
Does not depend on any underlying unicast protocol for global routing substructure
Why Multicast?
Ad hoc network  collaborative computing

Proactive versus Reactive

Proactive Routing Protocols
Exchange routing information periodically to maintain an up-to-date routing table
React to each network topology change
Problems:
High percentage of bandwidth used for routing information
Only a small fraction of the control traffic may be used

Zone Routing Protocol

Hybrid (proactive and reactive) routing protocol
Proactive procedure limited to node’s local neighborhood (zone)
Global search is carried out by querying selected (border) nodes.

Details of MZR

Zone Construction and Maintenance
Each node constructs a zone around itself using a pre-configured radius
Zone Routing Table built using ADVERTISEMENT packet
Periodic advertisements keep routing table up-to-date
Interior and Border nodes can be identified using the Zone Routing Table.

Conclusions

New source initiated, on demand multicast routing protocol for ad hoc networks
Builds a multicast delivery tree and does not depend on any underlying unicast mechanism
Every multicast receiver in the ad hoc network joins in finite time
Scales well for different group sizes and different mobility speeds.