Title :
Adaptive Reservation-Assisted Collision Resolution Protocol for Wireless Local Area Networks
Author :
Lin, Jia-Shi ; Chen, Chien-Hua ; Feng, Kai-Ten
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu
Abstract :
In conventional IEEE 802.11 medium access control protocol, the distributed coordination function is designed for the wireless stations (WSs) to perform channel contention within the wireless local area networks (WLANs). Packet collision is considered one of the major issues within this type of contention-based scheme, which can severely degrade the network performance for the WLANs. Research work has been conducted to modify the random backoff mechanism in order to alleviate the packet collision problem while the WSs are contending for channel access. However, most of the existing work can only provide limited throughput enhancement under specific number of WSs within the network. In this paper, an adaptive reservation-assisted collision resolution (ARCR) protocol is proposed to improve the packet collision from the random access schemes. With its adaptable reservation period, the contention-based channel access can be adaptively transformed into a reservation-based system while there are pending packets required to be transmitted from the WSs. Furthermore, according to the designed reservation table within the access point, the fairness for channel access between the WSs is addressed within the ARCR protocol. Numerical results indicate that the proposed ARCR scheme can outperform the existing schemes with enhanced channel utilization and network throughput.
Keywords :
access protocols; wireless LAN; wireless channels; IEEE 802.11; adaptive reservation-assisted collision resolution protocol; channel contention; channel utilization; contention-based scheme; distributed coordination function; medium access control protocol; network throughput; packet collision problem; random access schemes; random backoff mechanism; wireless local area networks; wireless stations; Access protocols; Adaptive control; Communications Society; Degradation; Media Access Protocol; Mobile communication; Programmable control; Throughput; Wireless LAN; Wireless application protocol;
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.2009.4917562