Title :
An efficient split-channel MAC protocol for multihop wireless networks
Author :
Shuai Du ; Xiaoping Du ; Kai Liu
Author_Institution :
Sch. of Software, Beihang Univ., Beijing, China
Abstract :
A new slotted split-channel medium access control (SSC-MAC) protocol is proposed for multihop wireless networks to maximize concurrent packet transmissions. By adjusting the relationship between the reservation slot (RS) on the control channel (CCH), data packet transmission slot (TS) on the data channel (DCH) and acknowledgment slot (AS) on the acknowledgment channel (ACH), the channel reservation, data packets and their confirmation can be simultaneously transmitted on the CCH, DCH and ACH with fewer reservation collisions. Multichannel hidden and exposed terminal problems are also alleviated to greatly improve the channel access efficiency. Transmission interferences can be avoided by only observing CCH for the transmission time of a data packet. Numerical results show that compared to the IEEE 802.11 DCF protocol, SSC-MAC has obvious performance improvement under the same total data rate.
Keywords :
access protocols; telecommunication congestion control; wireless LAN; wireless mesh networks; IEEE 802.11 DCF protocol; acknowledgment channel; acknowledgment slot; channel access efficiency; channel reservation; concurrent packet transmissions; control channel; data channel; data packet transmission slot; multihop wireless networks; reservation slot; split-channel MAC protocol; split-channel medium access control protocol; transmission interferences; IEEE 802.11 Standards; Media Access Protocol; Spread spectrum communication; Throughput; Transceivers; Wireless networks; collision avoidance; medium access control; multichannel; multihop wireless networks; reservation;
Conference_Titel :
Communications and Networking in China (CHINACOM), 2014 9th International Conference on
DOI :
10.1109/CHINACOM.2014.7054317
