Title :
Asynchronous energy-efficient MAC protocols for wireless sensor networks
Author :
Ren, Qingchun ; Liang, Qilian
Author_Institution :
Dept. of Electr. Eng., Texas Univ., Arlington, TX
Abstract :
In this paper, we propose two asynchronous energy-efficient MAC protocols: A-MAC and ASCEMAC, from contention- and schedule-based perspectives correspondingly. Through applying free-running method, novel rescheduling and time-slot allocation schemes, A-MAC and ASCEMAC do not require network time synchronization any more, which is necessary in existing energy-efficient MAC protocols. So, our algorithms are more suitable for the system which is difficult to ensure perfect network time synchronization. Moreover, we present a traffic-intensity- and network-density-based model to compute essential algorithm parameters: power on/off duration, interval of schedule broadcast, as well as super-time-slot size and sequence
Keywords :
access protocols; scheduling; synchronisation; telecommunication traffic; wireless sensor networks; A-MAC; ASCEMAC; asynchronous energy-efficient MAC protocols; contention-based perspectives; network time synchronization; network-density-based model; rescheduling; schedule-based perspectives; time-slot allocation schemes; traffic-intensity-based model; wireless sensor networks; Computer networks; Energy efficiency; Media Access Protocol; Power system modeling; Processor scheduling; Scheduling algorithm; Telecommunication traffic; Traffic control; Wireless application protocol; Wireless sensor networks;
Conference_Titel :
Military Communications Conference, 2005. MILCOM 2005. IEEE
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-9393-7
DOI :
10.1109/MILCOM.2005.1605942
