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The SMesh Wireless Mesh Network YAIR AMIR, CLAUDIU DANILOV, RALUCA MUS ALOIU-ELEFTERI
 

Summary: 6
The SMesh Wireless Mesh Network
YAIR AMIR, CLAUDIU DANILOV, RALUCA MUS ALOIU-ELEFTERI
and NILO RIVERA
Johns Hopkins University
Wireless mesh networks extend the connectivity range of mobile devices by using multiple access
points, some of them connected to the Internet, to create a mesh topology and forward packets
over multiple wireless hops. However, the quality of service provided by the mesh is impaired
by the delays and disconnections caused by handoffs, as clients move within the area covered by
multiple access points. We present the architecture and protocols of SMesh, the first transparent
wireless mesh system that offers seamless, fast handoff, supporting real-time applications such as
interactive VoIP. The handoff and routing logic is done solely by the access points, and therefore
connectivity is attainable by any 802.11 device. In SMesh, the entire mesh network is seen by
the mobile clients as a single, omnipresent access point, giving the mobile clients the illusion
that they are stationary. We use multicast for access points coordination and, during handoff
transitions, we use more than one access point to handle the moving client. SMesh provides a hybrid
routing protocol that optimizes routes over wireless and wired links in a multihomed environment.
Experimental results on a fully deployed mesh network demonstrate the effectiveness of the SMesh
architecture and its intra-domain and inter-domain handoff protocols.
Categories and Subject Descriptors: C.2.1 [Computer-Communication Networks]: Network

  

Source: Amir, Yair - Department of Computer Science, Johns Hopkins University

 

Collections: Computer Technologies and Information Sciences