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Issue No.06 - June (2008 vol.7)
pp: 805-816
ABSTRACT
In this paper, we propose an efficient MAC protocol: throughput maximized MAC protocol (TM-MAC), inspired by the availability that a number of ultra wideband (UWB) transmission parameters can be tuned to better match the requirements of data flow. In TM-MAC, we implement concurrent multiuser access scheme 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 generate the expected signal to interference noise ratio (SINR) at the receiver side for reliable communications. We also analyze the relationship among the theoretical maximum channel capacity, achievable maximum channel capacity and data transmission rate. According to network topology, TM-MAC re-divides each piconet into several subsets, in which communication pairs can make communication simultaneously and achieve the maximum throughput using the highest data rate. In subset formation, we propose a general analytical framework that captures the unique characteristics of shared wireless channel and throughput variance, as well as allows the modeling of a large class of systemwide throughput maximization via the specification of per-link utilization function. For algorithm essential parameters design, we consider the influence of traffic type on the system performance. Simulation results show that our algorithm can maximize throughput to achieve short latency.
INDEX TERMS
wireless communication, Network Protocols, Access schemes
CITATION
Qingchun Ren, Qilian Liang, "Throughput and Energy-Efficiency-Aware Protocol for Ultrawideband Communication in Wireless Sensor Networks: A Cross-Layer Approach", IEEE Transactions on Mobile Computing, vol.7, no. 6, pp. 805-816, June 2008, doi:10.1109/TMC.2007.70765
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