An Optimized Assisted Hybridcast Transmission Scheme in Mobile Wireless Networks

摘要

Assisted transmission plays a significant role in data transmission in mobile wireless relay networks, as it not only improves the transmission efficiency of the network system, but also helps to coordinate the data reception among different receiving stations to achieve the global transmission coordination. To realize the effective data transmission over the network, we propose an assisted hybridcast transmission scheme by formulating an objective optimization problem to coordinate the data delivery of each transmission group. Our transmission optimization scheme covers the tasks of specifying transmission group, determining transmission mechanism, performing resource allocation and schedule as well. Particularly we design two synchronization data transmission modes, namely frame synchronization transmission (FST) mode and content synchronization transmission (CST) mode respectively, to perform the assisted data transmission over the whole network. The simulation results also verify the efficacy and efficiency of the proposed assistance based hybrid-cast transmission scheme.