Title :
A Novel Dual Busy Tone Aided MAC Protocol for Multi-hop Wireless Networks
Author :
Liu, Ke ; Leng, Supeng ; Fu, Huirong ; Li, Longjiang
Author_Institution :
Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In order to combat the exposed terminal problem and the interference accumulation phenomenon in wireless channels, this paper proposed a new Asymmetrical Dual Busy Tones (ADBT) MAC protocol. By introducing BT-CTS/BTACK mechanism and the approximate algorithm of interfering nodes, ADBT MAC can solve the exposed terminal problem and the hidden terminal problem in the environment with large interference range. Moreover, the effect of the interference accumulation phenomenon can be alleviated by the power adjustment approach for the busy tones. The network performances of DCF, DBTMA, VPDBT and ADBT MAC protocols are compared via OPNET-based simulation experiments, which verify that ADBT is able to prevent packet collisions effectively and improve the channel utilization significantly.
Keywords :
access protocols; interference suppression; packet radio networks; wireless channels; ADBT MAC protocol; BT-ACK mechanism; BT-CTS mechanism; DBTMA; DCF; VPDBT; asymmetrical dual busy tone aided MAC protocol; hidden terminal problem; interference accumulation phenomenon; multihop wireless networks; packet collision prevention; Computational modeling; Computer networks; Computer science; Interference; Media Access Protocol; Power engineering computing; Radio transmitters; Spread spectrum communication; Wireless application protocol; Wireless networks; IEEE 802.11; MAC; dual busy tones; large interference range; multi-hop wireless network;
Conference_Titel :
Dependable, Autonomic and Secure Computing, 2009. DASC '09. Eighth IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-0-7695-3929-4
Electronic_ISBN :
978-1-4244-5421-1
DOI :
10.1109/DASC.2009.20
