| With the development of mobile Internet, mobile Internet applications and mobile services are increasing. Existing Internet apps in the data transmission techniques typically do not consider the contents of the data compression or other processing to decrease the transmission capacity. Mobile devices in the mobile Internet conditions exists unstable communication link, limited transmission bandwidth, higher transmission costs problems. Therefore, the conditions in the mobile Internet, the need for large data updates from a proposed method for reducing the transmission capacity.Existing cloud storage system usually retransmissions the entire document when updating file. But in the Mobile Internet, the terminal devices often need to pay high fees when using mobile data networks. If we apply the same approach, it will inevitably increase the transmission time and consumed traffic flow. Therefore, an efficient way is that transporting the different data instead of the whole file to reducing the consumption of time and traffic.From the beginning the principle of differential update algorithm, differential update algorithm theory and technical exploration, trying to solve ordinary differential calculation binary file. In addition, the difference would also update algorithm based on binary files(Bs Diff), proposed under a personal cloud storage system reduces the synchronized traffic flow approach.This work and innovations include the following aspects:1) The following data update summarizes the methods and characteristics ofmobile Internet;2) Compare the characteristics of the various methods of differential update;3) Proposed the use of binary differential updates ways to improve the mobileInternet cloud storage system data synchronization method;4) Proposed mobile Internet cloud storage system solutions in single-user domain,the conflict between multiple devices and find ways to resolve;5) Achieve a experimental personal cloud storage system based on the Bs Diffalgorithm. |
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