Network-Coding-Based Application Research In Mobile Internet

In recent years,the theoretical research of network coding is becoming more and more mature,but the application research is still lacking.The thought of network coding is different from that of traditional network relay transmission,because the data is re-encoded at the intermediate node of the network.The research shows that network coding has a good prospect in many fields,such as information security,distributed storage,wireless networks and sensor networks.In this paper,network coding is applied to the Mobile Internet.Network coding was originally proposed to improve the throughput of network.With the development of research,researchers have found that the coding operation of network coding technology can also provide additional data security.Therefore,the network coding technology gives the gain effect of the network data to the most important aspect of improving the network's throughput and data safety,and the existing studies of network coding are focused on these two aspects.In this paper,the network coding technology is applied in the Mobile Internet.Two mobile Internet application schemes based on network coding are proposed: location privacy protection scheme and file sharing scheme,and their performance analysis and evaluation are carried out in simulation and real experiment.Among them,the location privacy protection scheme utilizes the data security performance brought by network coding,and the file sharing scheme utilizes the capability of network coding to improve network throughput.In the privacy protection of mobile network based on secure network coding,the All-or-Nothing feature is used to protect the security of location privacy data when users request LBS(Locationbased service)services.The All-or-Nothing feature of network coding means that the data receiving node can decode the complete original data when receiving all the data pieces,and cannot obtain any useful information when receiving only part of the data slices.The implementation of network coding security performance relies on its All-or-Nothing feature.In this paper,the performance of the scheme is tested on the Android platform.The experimental results show that the mobile network location privacy protection scheme based on secure network coding can effectively protect the user's location privacy data in the received delay.The network coding-based file sharing scheme is a large file group sharing scheme proposed in the ad-hoc network architecture combined with network coding technology.P2 P is used when sharing files between multiple devices.Different from the traditional P2 P file transmission scheme,when a file request is received,the existing data is encoded to generate new data and then returned to requester.After the coding operation,the linear independence between data slices in the network is guaranteed,which increases the effectiveness of Peer connection and reduces the dependence of the sharing network on a single node,greatly improving the stability of the P2 P network.In this paper,the file sharing scheme based on network coding is firstly mathematically modeled,and then the performance of the scheme is tested on OMNeT++ network simulation platform and Android real experiment platform.The experimental results show that the file sharing scheme based on network coding is more efficient and 42.6% faster than the traditional scheme when the generation size is 4.