Content-aware Allocation Aware Based Wireless Resource Llocation In Collaborative Networks Wireless Resource In Collaborative Networks

Coorperation communication technology has become a promising technology in the next generation of wireless networks due to its wide coverage,low deployment costs,high spectral efficiency and reliable transmission.This thesis considers a very large traffic scenario involving coorperation communications,and initially explores joint communications and computing.This thesis gives a brief overview of collaborative networks.First,the concept of collaborative networks is introduced.According to the number of relays and cooperative transmission methods in cooperative networks,the simple cooperative communication model,the parallel collaborative communication model,and the multi-hop cooperative communication model are introduced respectively.Secondly,the related technologies of wireless relay are introduced,and three mainstream protocols are highlighted.Then it briefly introduces duplex relay and cache relay,and analyzes the link throughput of buffer relay links.Finally,some related technologies of the 5G network are briefly introduced,such as millimeter wave communication and small cell technology.After reviewing the new technologies of coorperation communication and wireless relay technology,this thesis mainly studies the content-aware relay allocation in multi-relay multi-purpose cooperative networks and the Bayesian decision-assisted routing scheme.A probabilistic routing based relay assignment scheme is proposed for a cooperative communication network with multiple destinations and multiple relays.The source node in the networks can perform a joint communication and computing.Based on the Bayesian decision theory,the source node can use the data block importance information acquired by content-awareness,the prior information of the direct link and the condition information of the two-hop link to prioritize a relay to a destination node with a higher importance request.Simulation results show that the proposed relay allocation scheme can improve the data rate of the system.In addition,the effect of the relay physical storage parameter on the data rate is evaluated in the cooperative relay system.Secondly,a resource allocation scheme of destination node mobility is discussed preliminarily,which makes it easy for the cooperative communication system to predict the relay link to be switched by the destination node in advance so as to improving user service quality.This thesis studies a routing strategy where the destination node moves at a constant speed.This scheme can assign the best relay to the moving destination node based on posterior probability and outage probability.Simulation results show that the scheme we studied can improve the link expected throughput.