Research And Implementation Of Cache Performance Optimization In Wireless Information Network

With the popularity of the mobile devices,the devices that access to the Internet has been more diversity,people are no longer satisfied with using the stationary devices to connect to the Internet;they also begin to use mobile phone,pad or laptop to connect to the Internet.As people using the network more and more frequently,the Wireless Local Area Network(WLAN)based on IEEE 802.11 protocol system has been massive development.At the same time,content distribution is gradually become the most important requirement for people to use the Internet,which make the traditional TCP/IP based network architecture has been no longer adaptive,as a new network architecture,Information-Centric Network(ICN)meets the new requirement for people to use the Internet.In recent years,much work has been done in the field of WLAN and ICN,and caching gets most of attention in the field of ICN for the reason that caching is one of the most important characteristics of ICN.However,despite all of this,the researches of WLAN and caching in ICN are advancing along two different routes,and few people noticed the connection between the two field.In this paper,we focus on the problems of caching of ICN in dense deployment WLAN,propose that considering the influence of caching to get the content of the users,and using it to help solving the problems in wireless network.Firstly,we model and analyze the scene that integrate the ICN with dense deployment WLAN,and formulate the problems in the network as an optimization problem.Then we propose Joint Wireless Association and Cache Allocation Scheduling Algorithm(JWACASA)to solve this problem and analyze the lower bound of JWAC AS A.Finally,we evaluate the JWACASA to prove it can improve the throughput remarkably and achieve load balance and user fairness,and prove the analysis of lower bound of JWACASA is correct.