Design And Implementation Of A Mobile-Terminal-oriented Adaptive File Push System

With the development of Mobile Smartphone,when people use mobile phones,the demands of file sharing through mobile-terminal is growing.Nowadays,The scheme of file transfer between smart-phones can be divided into two categories,internet-based and ad-hoc-network-based.When the clients can connect to the internet,they can use P2P direct technology or a file server to forward files.Otherwise,WIFI hotspots or Bluetooth technologies are used to set up ad-hoc networks between clients to realize file transfers.But in the case of network environment changes,the switch between the two schemes will lead to retransmission of files,and the parts that have already been transferred will be wasted.Previous file transfer using multi-thread technology also does not take into account changes in network state.Under the background of mobile-terminal file transfer,we designed and implemented a mobile-terminal-oriented adaptive file pushing system to solve the problem of mobile-terminal file transfer.The main works include:First,according to the features for mobile-terminal file transfer,a mobile-terminal file transfer model is constructed.In different network conditions,select the appropriate file transfer method.Through the user list shielding the heterogeneity of the network.FS saves file transfer status.MS manage the messages and commands.This file transfer model could ensure the reliability of the mobile network file transfer when network transformation.Second,propose a based on the switch of mobile-terminal heterogeneous network and the strength changes of network signal of multithreaded scheduling algorithm.Using this scheduling algorithm,the thread number could be adjusted according to network switch and the real-time network status.Through intelligent multithreaded scheduling,maximize the utilization of network resources.Third,on the basis of above,design and implement a Mobile-terminal-Oriented Adaptive File Push System a kind of mobile-terminal adaptive file push system.The main functions of the system as follows:1)Instant Messaging;2)File transfer under the different network condition 3)seamless file transfers after mobile network switching;4)Applied the multithreaded scheduling algorithm on mobile-terminal real-time heterogeneous network switches and network status to the system and tested transfers.Experimental results show that,this algorithm is able to enhance the efficiency of file transfer under the mobile network environments.