Giuseppe Caizzone

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This work proposes an enhancement of the GPSR routing protocol to improve the performance of point-to-point IP-based voice communications in a vehicular ad-hoc network. Our enhancement reduces significantly the end-to-end delay in ad-hoc networks using a TDMA-based Medium Access Control protocol. The proposed enhancement of GPSR routing basically consists(More)
In this paper, we study the Skype system in order to determine the presence of bottleneck for its scalability. In fact, as the Internet grows and the number of Skype users increases constantly, the Skype traffic carried by network links grows and also the load of Skype supernodes increases, mainly due to the need of relaying calls for users behind NAT(More)
IP telephony over mobile ad hoc networks is a topic of emerging interest in the research arena as one of the paths toward the fixed-mobile convergence in telecommunications networks. To investigate the performance characteristics of this service, we propose a complete system architecture, which includes a MAC protocol, a routing protocol, and the treatment(More)
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