An efficient split-channel MAC protocol for multihop wireless networks

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.

A Proposal of Communication Protocol to Improve the Throughput and Fairness of Multi-hop Wireless Networks and Its Evaluation

“…Therefore, in order to adapt to the network at an arbitrary time, various researches have been done from various viewpoints to date. Du et al [2] proposed a novel MAC 1 protocol, Slotted Split-Channel MAC (SSC-MAC) protocol. It is a technique that greatly improves the efficiency of channel access by adjusting the relationship between control, data, and acknowledgement.…”