Research On Service Relay Mechanism In The Mobile Internet

With the continuous expansion of the mobile Internet, the enrichment of service types and the rapidly increase of the number of users, how to effectively control and manage a large number of data packets, alleviate the network congestion and improve the overall performance of network has become a urgent task. As a popular research topic, Relay Service Mechanism provides an opportunity for the further development of the mobile Internet. It can coordinate the communication process between the terminal and service source based on relay node. At the same time, it also can improve the overall performance of the network and achieve the purpose of alleviating network congestion, reducing access latency, lowering the service source working pressure and many other aspects. However, compared with the traditional Internet, mobile Internet has many characteristics such as user mobility, limitation of terminal equipment resource and so on, so the Relay Service Mechanism based on mobile Internet has more complex factors to need to consider.This dissertation makes research on the service relay mechanism to improve the overall network performance of Mobile Internet. The main work includes the following aspects:1) Based on mobility characteristics of end users as well as the active state of each node in Mobile Internet, a Dynamic Relay Selection Scheme is researched, which select the optimal node as a relay node comprehensive considered the distance between the user and each candidate equipment and the real-time request of the node. It can improve the network overall performance by adopting the centralized control to implement dynamic relay selection process.2) A request scheduling scheme running on the relay node is researched, which in view of the problem of co ncurrency access traffic of Mobile Internet. By adopting the request classification processing, to further ease the relay network congestion problem between the source node and services, to further reduce the user waiting delay and to further improve the network performance. Through the experiment and simulation, the feasibility and effectiveness of the above two kinds of schemes is verified, and Analysis and comparison of the mobile Internet service access latency change situation before and after application solutions.3) Based on the user access behavior characteristics of streaming media services, a streaming media pre-reading strategy is researched. By analyzing the user access history record and based on the Markov model, build user access pattern library, predict the future behavior of users, proofread the service data, reduce the waiting time in the process of user access and improve the user experience. Through simulation, respectively from the cache byte hit ratio and time delay reduce amount to verify the feasibility and effectiveness of the strategy.