Research On Edge Storage Technology In Mobile Networks

Nowadays,the data traffic in the network is increasing rapidly.Limited to the limitations of its own factors,such as spectrum efficiency and backhaul links,the network is facing increasingly severe pressure.To cope with these challenges,new mobile network architectures and advanced data transmission technologies are being gradually applied to the next generation of 5G network.As one of the key technologies of 5G,edge caching technology can effectively unload data traffic in the network.But considering the factors such as equipment and cost,the caching space in the edge network is usually small.How to use the existing storage resources in the edge network to improve the caching performance of the edge network is the focus of this paper.For this reason,from the angle of improving the cache hit rate in the edge network,this paper studies the caching technology in the mobile edge network.This paper firstly introduces the background and research status of the caching technology in the network,then puts forward two innovative points for the caching scheme in heterogeneous mobile network.One is a multilevel cooperative edge caching scheme.The scheme considers the relative size of the caching space in the edge network by collaboratively utilizing the existing cache space in the edge network without introducing additional cache space.The simulation results show that,compared with the non cooperative caching architecture,the proposed scheme can increase the average cache hit rate by at least 10%.The second is the collaborative edge caching scheme that introduces user mobility.In this scheme,a Markov chain based user mobility model is introduced to verify the performance of the cooperative caching scheme more effectively.The simulation results show that compared with the static cooperative edge caching scheme,the average response delay of the dynamic caching scheme can be further reduced by 5-10(ms).In addition,this paper carries out a systematic implementation of the used simulation experiment system.