A location-based push service architecture with clustering method

The rapid advances in wireless devices and positioning technologies boost various kinds of location-based services. Location-based push service plays an important role in the mobile environment as it foresees useful information to mobile users according to their current location, but the large number and continuous location changing of users make the system load heavy. This paper first proposes a novel location-based push service architecture, which employs the method of clustering moving objects to balance the system load. To support the location-based service on clusters, we present a grid-based approach to efficiently relate a cluster to the information around it. Then, an advanced push service model is proposed which achieves the advantages of both pull service and push service. This model allows user to share the information pulled from the server with other users in the cluster.