Good quality video services always require higher bandwidth. Hence, toprovide the video services e.g., multicast/broadcast services (MBS) and unicastservices along with the existing voice, internet, and other background trafficservices over the wireless cellular networks, it is required to efficientlymanage the wireless resources in order to reduce the overall forced calltermination probability, to maximize the overall service quality, and tomaximize the revenue. Fixed bandwidth allocation for the MBS sessions eitherreduces the quality of the MBS videos and bandwidth utilization or increasesthe overall forced call termination probability and of course the handover calldropping probability as well. Scalable Video Coding (SVC) technique allows thevariable bit rate allocation for the video services. In this paper, we proposea bandwidth allocation scheme that efficiently allocates bandwidth among theMBS sessions and the non-MBS traffic calls (e.g., voice, unicast, internet, andother background traffic). The proposed scheme reduces the bandwidth allocationfor the MBS sessions during the congested traffic condition only to accommodatemore calls in the system. Instead of allocating fixed bandwidths for the BMSsessions and the non-MBS traffic, our scheme allocates variable bandwidths forthem. However, the minimum quality of the videos is guaranteed by allocatingminimum bandwidth for them. Using the mathematical and numerical analyses, weshow that the proposed scheme maximizes the bandwidth utilization andsignificantly reduces the overall forced call termination probability as wellas the handover call dropping probability.
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