Dynamical cooperative MAC based on optimal selection of multiple helpers
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Detection of selfish nodes in networks using CoopMAC protocol with ARQ
IEEE Transactions on Wireless Communications
Throughput Analysis of a Cooperative ARQ Scheme in the Presence of Hidden and Exposed Terminals
Mobile Networks and Applications
An energy-balanced cooperative MAC protocol based on opportunistic relaying in MANETs
Computers and Electrical Engineering
Improving fairness in IEEE 802.11 networks using MAC layer opportunistic retransmission
Computer Networks: The International Journal of Computer and Telecommunications Networking
| Hi-index | 0.00 |
Cooperative communications fully leverages the broadcast nature of the wireless channel and spatial diversity, thereby achieving tremendous improvements in system capacity and delay. By enabling additional collaboration from stations that otherwise will not directly participate in the transmission, cooperative communications ushers in a new design paradigm for wireless communications. In this paper, we extend a cooperative MAC protocol called CoopMAC [1] into the ad hoc network environment1. The new protocol is based on the idea of involving in an ongoing communication an intermediate station that is located between the transmitter and the receiver. The intermediate station acts as a helper and forwards to the destination the traffic it receives from the source. Thus, a slow one-hop transmission is transformed into a faster two-hop transmission, thereby decreasing the transmission time for the traffic being handled. Extensive simulations in a large scale wireless adhoc network (150 stations) show that CoopMAC significantly improves the ad hoc network performance in terms of throughput and delay, and indicate how such cooperative schemes can boost the performance of traditional solutions (e.g., IEEE 802.11).