A Medium- Access Control Scheme for Ultrasonic Communications in the Human Body Based on Second Order Statistics


While most research in body area networks to date has focused on traditional RF communications along the body surface, the core challenge of enabling networked intra-body communications through body tissues is substantially unaddressed. RF waves are in fact known to suffer from high absorption and to lead to overheating of human tissues.

UB researchers have addressed this problem by designing optimized network control strategies for implantable devices interconnected through ultrasonic waves, which are known to propagate better than their RF counterpart. The objective of this invention is to design lightweight, asynchronous and distributed algorithms for joint rate control and stochastic channel access that optimize the performance of Ultrasonic Intra-Body Area Networks (U-IBANs).

The researchers first develop a statistical model of the spatial and temporal variability of ultrasonic interference, and accordingly formulate the problem of throughput maximization. They then design and evaluate D-ROSA, a fully distributed solution algorithm. A centralized (but globally optimal) solution algorithm is also proposed to provide an upper-bound performance benchmark.

Through extensive simulation results, it is shown that D-ROSA achieves considerable throughput gain (up to 9 ) compared with traditional algorithms.

:Keywords: 6827, 6828, Rupal Desai 

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For Information, Contact:
Rupal Desai
Commercialization Manager
University at Buffalo
Tommaso Melodia
Zhangyu Guan
Tommaso Melodia
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