Abstract
Existing duty-cycle MAC protocols for wireless voice-over-IP(VOIP) networks, such as S-MAC, mostly do not consider the influence of inherent traffic distribution characteristic derived from network infrastructure, leading to significant end-to-end delivery latency and poor medium contention handling in data gathering, where multiple data flows generated at sensor nodes converge to the sink. To mitigate these drawbacks, we propose a novel duty-cycle protocol. It adopts a static configuration strategy to configure nodes with un-uniform minimum contention window, in order to optimize application-level medium access fairness, avoiding packet loss and buffer overflow incurred by mismatches between un-uniform payload distribution and node-level fair medium access scheme adopted by current protocols. Our simulation results obtained on ns-2 show that it can better accommodate tree-based data gathering applications, providing high throughput and packet delivery ratio without sacrificing energy efficiency.
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Cao, W., Yang, T., Zhang, S., Zhao, K., Cheng, B. (2015). High-Throughput, High-Delivery Ratio MAC Protocol for Wireless VOIP Networks. In: Sun, L., Ma, H., Fang, D., Niu, J., Wang, W. (eds) Advances in Wireless Sensor Networks. CWSN 2014. Communications in Computer and Information Science, vol 501. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46981-1_34
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DOI: https://doi.org/10.1007/978-3-662-46981-1_34
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