Research On Mobile Management Strategy In Content Centric Networking

As a typical future network architecture,Content Centric Networking(CCN)has obvious advantages in cache deployment,content forwarding,and network security.With the continuous development of network communication technology,mobile devices supporting wireless connection are becoming increasingly popular among network users,and the management of network mobility has become one of the key problems that must be resolved.In CCN,consumer’s requests cannot be successfully delivered to the mobile content provider according to the original forwarding path;and in order to ensure the reachability of mobile content provider,the simplest way is to update the routers of the entire network,which will generate huge update overhead.At the same time,existing mobile management solutions generally cannot adapt to the situation that mobile content provider switch the access router frequently,the mobile cost is too high and the time delay is too long.Refering to the above problems,this paper firstly proposes a mobile management solution for frequent switching of content providers to ensure the reachability of content providers to users with lower mobile costs and shorter delay.Then this paper further optimize the path based on the above scheme,which timely adopts the methods of content push and routing diffusion to further reduce mobile costs and delay.1.In order to ensure the reachability of mobile content provider to the visiting user with lower mobile cost,this paper proposes a mobile content provider management scheme based on location information interaction in the case of frequent switching of access routers during the movement of content provider.The scheme expands function of the access router,which leverages the access router before and after the switch to interact with the content provider’s new location information,and updates the forwarding entries of the access router before and after the switch,so that consumer’s requests can be delivered to the content provider quickly through the hop-by-hop route between the access routers.At the same time,this paper compares the various content provider mobile management schemes in CCN from both theoretical analysis and simulation experiment.The results show that the content provider mobile management scheme based on location information interaction has the lower mobility handover cost and mobility handover delay,and it has the advantages of lower cost and shorter delay of content acquisition when the number of mobile handoff is less.2.In order to further optimize the mobile handover performance of the scheme,based on the above scheme,this paper proposes an optimization scheme based on path optimization.In the case of the number of mobile handovers increases gradually,in addition to the location information interaction,the optimization scheme also timely adopts the method of limited hop count broadcast routing updates and content push according to the the connection time between the content provider and the new access router to optimize the transmission path of message.At the same time,this paper compares the various content provider mobile management schemes in CCN from both theoretical analysis and simulation experiment.The results show that the optimized scheme has lower mobile costs,shorter mobile handover delay and content acquisition delay,and achieves the purpose of mobility handover performance optimization.