A Preamble Based MAC Mechanism in Ad-Hoc Network

TL;DR

This paper introduces a preamble-based MAC mechanism for Ad-Hoc networks that significantly reduces network establishment time, with specific application to power line communication networks and frequency optimization.

Contribution

It proposes a novel P-MAC mechanism with shorter preambles, a frequency sweeping method for optimal communication, and demonstrates improved network setup efficiency over traditional CSMA.

Findings

P-MAC greatly shortens network establishment time.

Frequency sweeping optimizes communication frequency for higher SNR.

Numerical results confirm efficiency improvements over CSMA.

Abstract

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