Adaptive Instantiation of the Protocol Interference Model in Mission-Critical Wireless Networks

Interference model is the basis of MAC protocol design in wireless networks, and it directly affects the efficiency and predictability of wireless messaging. To exploit the strengths of both the physical and the protocol interference models and to understand the varying observations on the relative goodness of scheduling based on the two models in literature, we analyze how network traffic, link length, and wireless signal attenuation affect the optimal instantiation of the protocol model. We also identify the inherent tradeoff between reliability and throughput in the model instantiation. Our analysis explains the seemingly inconsistent observations in literature and sheds light on the open problem of efficiently optimizing the protocol model instantiation. Based on the analytical results, we propose the physical-ratio-K (PRK) interference model as a reliability-oriented instantiation of the protocol model. Via analysis, simulation, and testbed-based measurement, we show that PRK-base...

• Type: Journal
• Year: 2010
• Where: SECON
• Authors: Xin Che, Xiaohui Liu, Xi Ju, Hongwei Zhang
• Keywords: Communications, Interference Models, Model, Protocol Model, SECON 2010