Verification of Mobility-Based Soft Handover Algorithm using WCDMA Measurements Data

Handover is essential for seamless communication since subscribers move from cell to cell. This paper proposes an efficient handover decision based on user mobility to suppress the ping-pong effect. By using GPS positioning, the proposed algorithm adds a hysteresis parameter associated with distance between the mobile and surrounding base stations and a hysteresis parameter associated with the mobile heading direction in Event 1A and 1C. The performance was verified by applying the proposed method to a WCDMA system in urban Taipei city. The result shows that by using the proposed algorithm, handover number and mean active set number are decreased compared to the traditional algorithm