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Title: Efficient Geographic Routing for Mobile Ad-hoc Networks
Speaker: Xin Wang.

Abstract: 

Efficient packet forwarding is critical for the success of mobile ad
hoc networks. Finding and maintaining the routing path over dynamic
topology has been a very challenging task. Packet forwarding schemes
based on the geographical locations of nodes have drawn attention in
recent years. The current geographic routing protocols rely on
proactive fixed-interval beaconing mechanisms for position
information, resulting in unnecessary overhead when routing is not
needed, and performance deterioration when the topology is highly
dynamic. Multicast routing in mobile ad hoc networks presents an even
greater challenge, due to the difficulty in group membership
management, multicast packet forwarding and the maintenance of a tree-
or mesh-based multicast structure over a dynamic topology,
particularly with a large group or network.

In this talk, I will first present two self-adaptive on-demand
geographic unicast routing protocols that can distribute position
information efficiently and on time, and can intelligently optimize
the routing path in response to topology changes and traffic
conditions. I will then present a scalable geographic multicast
protocol for robust group management and multicast packet
forwarding. There is no need to maintain a tree- or mesh-based
multicast structure as in the conventional MANET multicast protocols,
which reduces the maintenance overhead. Our proposed multicasting
scheme combines group membership management with location service to
avoid searching for positions of all the group members.

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Speaker Biography: 

Dr. Xin Wang received her PhD. from Columbia University, New York, NY,
in 2001.  Between 2001 to 2003, she was a Member of Technical Staff in
the area of mobile and wireless networking at Bell Labs Research,
Lucent Technologies, New Jersey.  She is currently an Assistant
Professor in the department of Computer Science and Engineering of the
State University of New York at Buffalo. She is a recipient of the
prestigious NSF CAREER award in 2005.

Her research interests include modeling and analysis of mobile and
wireless networks; integrated network infrastructure design and
performance optimization across network layers, applications and
heterogeneous networks; network and mobility management, QoS,
signaling and control; and adaptive network services and applications.
     
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