Abstract
Cell phones are embedded with sensors form a Cellular Sensor Network which can be used to localize a moving event. The inherent mobility of the application and of the cell phone users warrants distributed structure-free data aggregation and on-the-fly routing. We propose a Distributed Velocity-Dependent (DVD) protocol to localize a moving event using a Multihop Cellular Sensor Network (MCSN). DVD is based on a novel form of connectivity determined by the waiting time of nodes for a Random Waypoint (RWP) distribution of cell phone users. This paper analyzes the time-stationary and spatial distribution of the proposed waiting time to explain the superior event localization and delay performances of DVD over the existing Randomized Waiting (RW) protocol. A sensitivity analysis is also performed to compare the performance of DVD with RW and the existing Centralized approach.
Highlights
In recent years, the idea of people-centric sensing or participatory sensing has gained considerable significance in urban environments
Multihop Cellular Sensor Networks (MCSN), where sensor networks are built upon the Multihop Cellular Networks (MCN) infrastructure, are advocated in this paper
We propose the following Waiting Time Connectivity (WTC) rule: Let τ(i) be the waiting time of node i and dij be the Euclidean distance between node i and node j
Summary
The idea of people-centric sensing or participatory sensing has gained considerable significance in urban environments. In [12], a structure-free Data Aware Randomized Waiting (RW) time protocol had been proposed for detecting a moving target using a static wireless sensor network. We derive the time-stationary probability density function and analyze the spatial distribution of waiting time to provide a better insight into the design and benefits of the proposed DVD protocol. The proposed DVD protocol and the existing Centralized scheme (Cellular Sensor Networks without multihop) have comparable event localization estimates.
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