Abstract:
Premature call termination takes place when a roaming user moves from its serving base station into a new one but cannot be assigned a channel in the new cell to resume its connection. This implies that the call could not be handed over to the nearest base station for connection continuity. A good number of schemes have been developed and proposed to ensure successful handover and avoid abrupt disruption. The schemes include Conventional Handover Mechanism, Guard Channel Prioritization Scheme, Call Admission Control Prioritization Scheme, Handover Queuing Prioritization and Resource Reservation Schemes. However, a comparison of the performance of queuing and reservation techniques was carried out in this work to highlight their strengths and weaknesses given predefined system parameters. The analysis showed that resource reservation schemes guarantee progressive call drop probability reduction subject only to chosen trade-off point for fresh call admission while queuing was noticeably effective only up to 25% of the queue spaces provided.
