A Preamble-Based MAC Mechanism in Ad-Hoc Network

In this paper, we propose a preamble-based medium access control (P-MAC) mechanism in Ad-Hoc network. Different from traditional carrier sense multiple (CSMA) network, P-MAC uses much shorter preamble to establish the First, shorten time of establishing Based on P-MAC, more efficient way maintain Next, focusing power line communication (PLC) network which is kind frequency division (FD-PLC) architecture obtain best frequency. To frequency, i.e., highest signal-to-noise ratio (SNR), design sweeping can determine uplink and downlink before transmitter receiver communicate. Due large-scale networks industry, be exploited speed up establishment PLC Finally, compare our with CSMA. Numerical results indicate that strategy greatly shortens