Location and Direction Estimation-Based Resource Reservation Scheme for the Handoff in Micro Cellular Multimedia Networks

This paper proposes resource reservation scheme for the handoff control to accommodate mobile multimedia traffic using the location estimation and the direction estimation. This proposed scheme uses a novel mobile tracking method based on fuzzy multi-criteria decision making, in which uncertain parameters such as pilot signal strength, distance between the mobile terminal and the base station, the moving direction, and the previous location are used in the decision process using the aggregation function in fuzzy set theory. With the position information, the moving direction is determined. The handoff requests for real time sessions are handled based on the direction prediction and the resource reservation scheme. The radio resources in the estimated adjacent cells should be reserved and allocated to guarantee the continuity of the real-time sessions. In performance analysis, our proposed scheme provides a better performance than the previous schemes.