A Research On Access Strategy For Satellite And Terrestrial Networks

Terrestrial wireless networks could not meet the demand of traffic with the increase of traffic intensity and the diversity of traffic types.So satellite communication networks would become one of the most prevalent communication systems for the increasing demand for high-speed multimedia services and the underutilization of scarce satellite spectral resource in next generation wireless communication systems.For such a communication system,radio resource allocation is the core process of the traffic transmission.While the research on the resource allocation still needs to be further because satellites' inherent characteristics for broadcasting,long delay and so on.In order to reduce the average service delay and ensure business fairness,we propose a novel big root pile algorithm(BRPA)according to the ideology of heap sort algotithm.In the BRPA,a gain factor based on multi-priority services and various link states are introduced to optimize the results of the slot resource allocation.Compared to the traditional random allocation algorithm and direct selection algorithm,the proposed BRPA is able to gain lower average service delay as well as lower complexity.To improve the efficiency of satellite resource and reduce the energy consumption of the satellite satellites,the slot and power allocation approach for the satellite networks is sought and analyzed based on a specific intelligent terrestrial controller(ITC)and a hierarchical resource allocation algorithm is proposed to minimize the energy consumption of the satellite satellites.In the hierarchical architecture,we use the BRPA to select optimal slot collection,and then a filling-water algorithm is utilized to allocate power resource among the chosen links.Finally,numerical results validate the performance enhancement of the proposed scheme.