Durability of wireless networks of battery-powered devices

Authors:
Maryam Soltan;Massoud Pedram
Affiliations:
University of Southern California, Dept. of Electrical Engineering, Los Angeles, CA;University of Southern California, Dept. of Electrical Engineering, Los Angeles, CA
Venue:
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Year:
2009

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Abstract

Given the criticality of energy awareness in wireless networks, it has become essential to devise an improved definition of the network lifetime at the system design stage. The new definition must capture the life profile of the network while accounting for its functionality and specific design parameters. This paper presents the notion of network durability, which captures the spatiotemporal life/death patterns of devices in a wireless network by examining the time evolution of spatial patterns according to which devices are progressively forced to exit the network having exhausted their energy resource. Using network durability, we show how networks can satisfy different levels of monitoring criticality, even when they exhibit the same conventionally defined lifetime. Finally, as an example application, we consider a heterogeneous location-aware modulation scheme where the proposed durability model is effectively employed to characterize the network lifetime.