Title :
CA-MAC: Context Adaptive MAC Protocol for Wireless Sensor Networks
Author :
Kim, Kyung Tae ; Choi, Won Jun ; Youn, Hee Yong
Author_Institution :
Sch. of Inf. & Commun. Eng., SungKyunKwan Univ., Suwon
Abstract :
Energy efficiency is a critical issue for sensor network. In this paper we propose an energy efficient context adaptive MAC protocol for wireless sensor networks. The existing approaches improve energy efficiency by controlling the duty cycle of transmission period. The proposed protocol achieves that by letting each node stay in the sleep mode if the number of packets in the buffer is smaller than the threshold, while the threshold value is decided according to the distance of the node to the sink node. The variable threshold for each switch node, however, may cause increased latency. This problem is solved by immediately transmitting the packets of high priority context data. Computer simulation using OMNeT++ reveals that the proposed protocol significantly reduces the energy consumption compared with the existing S-MAC and T-MAC protocol.
Keywords :
access protocols; buffer storage; wireless sensor networks; CA-MAC; energy efficient context adaptive MAC protocol; packet buffer; wireless sensor network; Context; Delay; Energy consumption; Energy efficiency; Media Access Protocol; Peer to peer computing; Switches; Telecommunication traffic; Wireless application protocol; Wireless sensor networks;
Conference_Titel :
Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE
Conference_Location :
Budapest
Print_ISBN :
978-1-4244-2947-9
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2009.4917618