Optimization Design Of Content Centric Network Mobility For Complex Environment

Content centric network is a new type of network architecture.Compared with traditional TCP/IP network structure,it is possessed of many good features like high flexibility,good security,fast transmission speed,low energy consumption,etc.Content center network has a great advantage in dealing with mobile network,still its request-driven mechanism results in a series of problems in network stability and transmission efficiency.This paper analyzed Interest Forwarding Policy and Name Mapping Policy,proposed the Temporary Cache Space and Indicator Virtual Interest mechanism based on the features of Ad-Hoc mobile network.Two routing optimizing policy were put forward with these mechanisms.The first one reduced the packet loss and retransmission by setting up node checkout and cache backup,while the second one reduced transmit delay and improved hit ratio by improving FIB update speed and setting the caching node.This paper also designed the scheme to deal with node malfunction in order to improve network's robustness.This paper also constructed the ndnSIM simulation platform,on which mobile content centric network structure has been simulated.Experiment shown that the optimizing schemes have achieved good performance,improved network stability and transmit efficiency.