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Title: Self-Stabilizing MAC protocols for large-scale, heavy loaded sensor networks under consideration of hidden nodes
Language: English
Authors: Unterschütz, Stefan 
Turau, Volker 
Keywords: self-stabilization;sensor network;MAC;CSMA
Issue Date: 2011
Abstract (english): In large-scale, heavy loaded sensor networks the hidden node problem significantly restricts the attainable throughput. This paper examines this issue and depicts why most TDMA as well as dedicated hybrid MAC protocols are still negatively affected by this phenomenon. The concept of probabilistic self-stabilization is adopted to provide a framework for implementable reservation MAC protocols that avoid packet loss caused by signal interferences even under high load. These protocols base upon two main primitives: continuity in channel access, allowing predictability, and acknowledgments, permitting to discover packet loss. The designed TDMA and CSMA protocols are able to cope with the hidden node problem and with topology changes and achieve a high throughput in a steady state. The protocols are simulated and compared with IEEE’s 802.15.4 unslotted CSMA/CA protocol.
DOI: 10.15480/882.1067
Institute: Telematik E-17 
Type: ResearchPaper
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