On Dynamic Replication Management of Wireless GIS Spatial Data

The technology of GIS spatial data transfer and storage is experiencing the development from wired network to wireless network at present.Under the wireless network condition,the deficiency of low bandwidth,frequent disconnection and finite resource made the efficiency of GIS data replication low.For the high request of great capacity GIS data,mobile computing environment based the wireless GIS dynamic multi-tries replication model is introduced,and a replica management system is designed to analysis the replica transferring of wireless network which preserves the desired spatial update efficiency.