Graduate School and Research Center in Digital Sciences

Seminar: Asymptotic Laws for Throughput and Delay in Content-Centric Mobile Wireless Networks

Emilio Leonardi - Polytechnique de Turin

Communication systems

Date: September 9, 2013

We analyze throughput-delay scaling laws of mobile ad-hoc networks under a content-centric traffic scenario, where users are mainly interested in retrieving contents cached by other nodes. We assume limited buffer size available at each node and Zipf-like content popularity. We consider nodes uniformly visiting the network area according to a random-walk mobility model, whose flight size is varied from the typical distance among the nodes (quasi-static case) up to the edge length of the network area (reshuffling mobility model). Our main findings are i) the best throughput-delay trade-offs are achieved in the quasi-static case: increasing the mobility degree of nodes leads to worse and worse performance; ii) the best throughput-delay trade-offs can be recovered by power control (i.e., by adapting the transmission range to the content) even in the complete reshuffling case.

Asymptotic Laws for Throughput and Delay in Content-Centric Mobile Wireless Networks

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