DocumentCode :
615850
Title :
Coordinated dynamic physical carrier sensing based on local optimization in wireless ad hoc networks
Author :
Xinming Zhang ; Guoqing Qiu ; Zhilong Dai ; Dan Keun Sung
Author_Institution :
Sch. of Comput. Sci. & Technol., Univ. of Sci. & Technol. of China, Hefei, China
fYear :
2013
fDate :
7-10 April 2013
Firstpage :
398
Lastpage :
403
Abstract :
Carrier sensing schemes have been recognized as a key knob for improving network performance. The distributed coordination function (DCF) and its modifications focus on the feature of the ongoing transmission links to enhance link throughput, however, a lack of coordinated adjustment of the surrounding nodes may reduce the aggregate throughput of entire network. In this paper, we are concerned with the delayed transmissions from exposed terminals, and interference and collisions from hidden terminals. We classify the neighboring areas for a given transmission link into three areas: a hidden area, an exposed area and an overlapped area, and then propose a coordinated dynamic physical carrier sense (CDPCS) scheme in which the carrier sensing threshold (CST) values of the neighbors are adjusted at the same time to achieve local optimization by utilizing the exchanged information and states of neighboring nodes. Simulation results show that the proposed schemes can work effectively.
Keywords :
ad hoc networks; optimisation; aggregate throughput; carrier sensing threshold; coordinated dynamic physical carrier sense scheme; coordinated dynamic physical carrier sensing; delayed transmissions; distributed coordination function; exchanged information; exposed area; hidden area; link throughput; local optimization; network performance; overlapped area; transmission links; wireless ad hoc networks; Interference; Optimization; Receivers; Sensors; Throughput; Tuning; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2013 IEEE
Conference_Location :
Shanghai
ISSN :
1525-3511
Print_ISBN :
978-1-4673-5938-2
Electronic_ISBN :
1525-3511
Type :
conf
DOI :
10.1109/WCNC.2013.6554597
Filename :
6554597
Link To Document :
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