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WSN11-3: A Throughput-Maximized MAC Protocol for Ultra Wideband Communication in Wireless Sensor Networks

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2 Author(s)
Qingchun Ren ; Dept. of Electr. Eng., Univ. of Texas at Arlington, Arlington, TX ; Qilian Liang

In this paper, we propose a MAC protocol: throughput-maximized MAC protocol (TM-MAC), based on the characteristics of ultra wideband (UWB) technology. In TM- MAC, we implement concurrent multiuser access instead of mutual exclusion method, such as TDMA and random access. For multiuser interference, we establish a model to adaptively adjust the data transmission rate to ensure a satisfied signal to noise ratio (SNR) at receiver side. We also analyze the relationship among the theoretical maximum channel capacity, the achievable maximum channel capacity and the maximum data transmission rate. According to the network topology, TM-MAC re-divides network into subsets, in which communication pairs can make communication simultaneously to enhance throughput and to exploit as fast as possible data transmission rate for reliable communication. For subset formation, we propose a general analytical framework, which captures the unique characteristics of shared wireless channel and allows to model a large class of systemwide throughput maximization issue via the specification of per-link utilization functions. Simulation results demonstrate that TM-MAC can implement throughput maximization to shorten latency and to enhance network processing capability.

Published in:

Global Telecommunications Conference, 2006. GLOBECOM '06. IEEE

Date of Conference:

Nov. 27 2006-Dec. 1 2006

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