Local Routing Technique And Database Optimization In WiMAX System

Currently under the background of big date era, WiMAX is a kind of wireless technology evolutioned from computer communication, which holds urgent needs for efficient management and real time store of network data.In this paper, taking IEEE802.16 protocol and WiMAX Forum specifications as the theoretical basis, we firstly give a distributed database for WiMAX communication system which is based on local routes. This system deploys local user databases into the WiMAX network elements of every layer and standardize the data storage format of various network elements. In order to verify the performance of the database system, we call MySQL api function to build a simulation database simulation platform in the C++ environment. Secondly, for the location service of the WiMAX, we gave a defination of specific users, and further provade the process specifications of querying local specific users. Combining with the process specifications, a distributed proxy server solution is designed which can reduce the pressure of quering location servers in CSN (i.e., setting an proxy server on each ASN-GW). As to the special case of popular specific users, we investigated cache-based " blackboard" technology which is implemented in the simulation platform.Finally, sharding technique is ultilized to optimize the high concurrent reading and writing user database in CSN. In order to effectively make use of each sharding, we propose a strategy based on FODO load balancing algorithm.