CA-MAC: A Novel MAC Protocol to Alleviate Congestion in Wireless Sensor Networks

Autor:	WU, J., LIU, H., DOBRE, O. A., FANG, C., QIAN, L.
Jazyk:	angličtina
Rok vydání:	2013
Předmět:	wireless sensor networks MAC protocol data gathering effect congestion alleviation contention window Electrical engineering. Electronics. Nuclear engineering TK1-9971 Computer engineering. Computer hardware TK7885-7895
Zdroj:	Advances in Electrical and Computer Engineering, Vol 13, Iss 4, Pp 41-46 (2013)
Druh dokumentu:	article
ISSN:	1582-7445 1844-7600
DOI:	10.4316/AECE.2013.04007
Popis:	Even if the traffic pattern is known and the network topology is simple, a strong congestion can take place in wireless sensor networks (WSNs) due to the data gathering effect and the duty-cycle operation. In this paper, we propose a novel medium access control (MAC) protocol to alleviate the congestion, which is referred to as the congestion alleviation-MAC (CA-MAC). It adopts an adaptive contention window (ACW), which allows the nodes with more buffered packets to transmit with a higher probability, as well as an intelligent burst packet transmission when the congested nodes seize the channel. Simulations are performed in NS-2, and results show that the proposed CA-MAC protocol achieves a good performance in terms of the packet delivery ratio (PDR), power consumption, throughput, and average latency.
Databáze:	Directory of Open Access Journals
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