A modified and classified channel allocation scheme for underground mine emergency rescue WMN
Wei Yang · Meitan xuebao · 2012
A modified and classified channel allocation(MCCA) strategy for underground mine emergency rescue wireless Mesh network(U-WMN) was proposed.To satisfy the application requirements on real-time transmission and stability of U-WMN,and with consideration of its long distance relay transmission characteristic,MCCA employs distributed and static channel allocation pattern,and assigns channels for each link using a link-expected-load(LEL)-based channel allocation priority scheme,so as to meet the unbalanced bandwidth requirements of U-WMN links.In the priority scheme,the LEL of each link was firstly calculated in inverse proportion of the hop distance between the link and gateway,and then been randomly modified before being as the unique channel allocation priority for the link.Simulation results prove that U-WMN using MCCA has a stable transmission performance,and its network capacity and real-time property are effectively improved.