A predictive paging scheme based on the movement direction of a mobile host

This paper introduces a predictive paging scheme, called the movement direction paging scheme (MDP), which is based on the movement direction of a mobile host in order to reduce the paging cost in personal communication services (PCS). In the movement direction paging scheme, the visiting location registers (VLR) store the history of movement directions for a mobile host in its database. The history of movement direction for a mobile host is stored with compact records revised by the mapping and reduction function of the mobile switching center (MSC). The future movement direction of a mobile host can be predicted by using these records stored at the database of the VLR. The proposed scheme of movement direction paging is combined with a movement-based registration scheme and related to the basic velocity paging scheme (BVP). Analytical models of the basic velocity paging scheme and the paging scheme for performance evaluation are provided and the results demonstrate the cost-effectiveness of the proposed scheme under various parameters