DocumentCode :
141768
Title :
Contention Window-Based MAC Protocol for Wireless Sensor Networks
Author :
Bin Cheng ; Linlin Ci ; Chengping Tian ; Xuanya Li ; Minghua Yang
Author_Institution :
Sch. of Comput. Sci. & Technol., Beijing Inst. of Technol., Beijing, China
fYear :
2014
fDate :
24-27 Aug. 2014
Firstpage :
479
Lastpage :
484
Abstract :
Existing duty-cycle MAC protocols for wireless sensor networks(WSNs), 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. To mitigate these drawbacks, we propose a novel duty-cycle MAC protocol, called RL-MAC (location-based RMAC). Firstly RL-MAC exploits a location-based configuration strategy to configure nodes with un-uniform CWmin (minimum contention window) values during network initialization, in order to optimize application-level medium access fairness, avoiding packet loss and buffer overflow incurred by mismatches between un-uniform payload distribution over nodes in different position and node-level equal medium access scheme adopted by current protocols. Secondly like RMAC, RL-MAC can forward data packets over multiple hops per cycle through intermediate nodes according to cross-layer routing information, significantly reducing end-to-end delivery latency. Our simulation results obtained on ns-2 show that RL-MAC can better accommodate data gathering applications, providing high throughput and packet delivery ratio without sacrificing energy efficiency.
Keywords :
access protocols; data communication; routing protocols; telecommunication traffic; wireless sensor networks; RL-MAC; RMAC; S-MAC; WSN; application-level medium access; configuration strategy; contention window-based MAC protocol; cross-layer routing information; data gathering; duty-cycle MAC protocol; duty-cycle MAC protocols; end-to-end delivery latency; location-based RMAC; medium contention handling; network infrastructure; network initialization; packet delivery ratio; traffic distribution characteristic; un-uniform payload distribution; wireless sensor networks; Media Access Protocol; Mesons; Payloads; Synchronization; Throughput; Wireless sensor networks; contention window; data gathering; medium access control; wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Dependable, Autonomic and Secure Computing (DASC), 2014 IEEE 12th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4799-5078-2
Type :
conf
DOI :
10.1109/DASC.2014.92
Filename :
6945737
Link To Document :
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