Abstract
A new mobile computing model of spatial information service is studied based on grid computing environment. Key technologies are presented in the model, including mobile agent (MA) mobile computing, grid computing, location based service (LBS) ,global positioning system (GPS), and wireless communication technologies, such as, general packet radio service (GPRS), transfer control protocol/internet protocol (TCP/IP), and user datagram protocol (UDP). In order to deal with the narrow bandwidth and instability of the wireless internet, distributed
organization of tremendous spatial data, limited processing speed and low memory of mobile devices, a new mobile agent based computing model of mobile spatial information service grid (MSISG) is further proposed that has good load balance, high processing efficiency, less network communication and thus suitable for mobile computing environment. A field test is carried out through this model, and the results show that the proposed model is adaptable for mobile spatial
information service.