Device-to-Device Content Sharing For Traffic Offloading In Software Defined Wireless Mobile Networks

Various mobile applications on portable devices have generated significant amounts of data traffic,resulting in a dramatic increase in the demand for mobile data traffic,followed by a rapid increase in demand for network capacity.In order to solve this challenge,many researchers pay close attention to the network traffic offloading.The Device-to-Device(D2D)communication technology can be used for network traffic offloading.In the original wireless network,the introduction of Software Defined Network(SDN)can make heterogeneous wireless networks easy to manage and configure,but also easier to introduce a new auxiliary technology.Based on the analysis of the characteristics of traffic demand,this paper proposes a content sharing scheme for traffic offloading.based on D2D communication in software defined wireless mobile network.The main work is:(1)Research on SDN-based traffic offloading wireless mobile network architecture.In order to facilitate the introduction of D2D communication into the wireless mobile network and realize the traffic offloading function,the wireless mobile network D2D communication architecture based on software defined is designed on the basis of the existing research.(2)Proposed content sharing scheme based on D2D communication.The scene of concern is the urban area,with high user density and mobile data needs.In the software defined mobile network,users share content through the way of D2D communication to achieve the purpose of traffic offloading.Specifically,the whole process of content sharing and the key algorithms will be described.(3)In order to encourage users to switch to D2D mode,we put forward incentive strategies for different network scenarios.The basic idea is to let network operator reward D2D communication users to compensate for their cost.Respectively,consider the open and sealed of two basic types of network scenarios.For the open scenario,we put forward a game theory based incentive strategy.For the sealed scene,the incentive mechanism based on auction is designed.The main goal is to guarantee truthfulness.