Handoff ordering using signal strength for multimedia communications in wireless networks

In this paper, we present a method for improving the quality of service (QoS) in multimedia wireless systems based on prioritization of handover requests. A strategy called signal strength for multimedia communications (SSMC) is proposed. In this strategy, we calculate a handoff priority for every multimedia service using three values: the static priority value, the degradation rate of the received signal strength (/spl Delta/RSS), and the RSS level itself. Then, each handoff request is queued and handled according to its priority value. We present the detailed algorithm and analyze its performance on a 25-cell network. Then, its performance is compared with other methods by simulations. The results indicate our method can effectively reduce the handoff call dropping probability compared to nonpriority schemes.