Yuehua Wang, Ling Liu, Calton Pu, Gong Zhang,
GeoCast An Efficient Overlay System for Multicast Applications
In this paper, we present GeoCast, a geographical location aware overlay
network framework designed for providing efficient group communication
services. GeoCast can be seen as an extension to the CAN network in the
term of topology management and routing protocol. Geocast design has
three important properties that attractive to group communication
applications. First, it uses geographical mapping of nodes to regions to
take advantage of the similarity between physical and network proximity.
Second, a shortcut enabled geo-distance routing protocol is employed in
GeoCast, which is more resilient than Chord-like or Pastry-like overlay
networks due to the availability of multiple independent routing paths.
Third and most importantly, a novel routing table management scheme is
designed to allow the applications based on that have ability to manage
their maintenance overhead in terms of network resource constrains.