联合资源切换算法的研究

Handover is an important technology in the RRM. Different parameters can be considered as judgment element simultaneously to improve the handover performance. For the co-existence of heavy and light load cell in future system, the traditional handover algorithms that only based on pilot value can not reflect the actual load status of the target cell. To heavy load cell, accessing a handover user will cause performance worsen, or blocking for insufficient resources, while the resources of light heavy cell are idle, resulting serious load unbalanced. In this paper, an advanced handover judgment based on the combination of pilot value and resource, Joint Resource Handover Judgment (JRHJ) algorithm for realizing load balancing is proposed. The pilot value is not the only handover judgment element. In a handover procedure, the target cell will be chose according to the actual resource utilization. By accessing users to the light load cell, the resource can be utilized reasonably and efficiently, the system handover dropping probability will be decreased and the resource utilization will be increased.