The Dynamic Data Backup Algorithm Research In Cloud AC

WLAN network was originally positioned as a3G/4G networks complement, and with the great enthusiasm of major network operators for WLAN, WLAN has the rapid development, and it rely on the advantages of its own technology evolved into a separate network. With the continuous expansion of construction scale of WLAN networks, the existed networking mode slowly revealed many shortcomings, in order to change the current status, we will use cloud computing technology into WLAN, the architecture of WLAN based on the "cloud AC" is a development direction. Among them, an important issue of "cloud AC" WLAN working properly, is how to ensure the various data backup of cloud AC.The advantages of cloud computing is AC/Fit AP architecture deficiency, so we consider to apply the thinking of cloud computing in the WLAN network, integral the AC resources coming into the "AC cloud" to serve, in order to improve the network utilization and the reliability, and optimize network resources, in our previous work we have done the preliminary exploratory research, puts forward the thinking of "cloud AC" architecture network, and the dynamic data backup of cloud AC network discussed in this paper is also based on the structure.The discussed problem of data backup in "AC" cloud architecture is the problem of data backup in multiple AC nodes with each other in the cloud system, this paper researched the problems of cloud AC dynamic data backup based on cloud "AC" architecture, and gave the dynamic data backup algorithm, provided some theoretical perspectives in further studies for the future. This thesis mainly completed the following work:First, we researched the WLAN system backup problems based on "cloud AC network architecture, expounded the importance of cloud backup AC problem, and described the differences between the existing backup problem and cloud AC backup of WLAN. And then we introduced the current progress, describe the working principle of AC architecture of cloud in detail.Second, we analyzed the existing cloud AC static data backup algorithm, introduced the static data backup algorithm thought in detail, and pointed out the deficiencies that the algorithms in solving the problem of dynamic backup.Third, we studied cloud AC dynamic data backup in the dynamic scenarios; this paper expounds the problems of the dynamic data backup scene, and puts forward the optimization model, and the dynamic data backup algorithms based on "partner algorithm"; Finally, We analyzed and evaluated the performance of algorithm, improved the problems about efficiency of the dynamic data algorithm.