  Video broadcast/multicast over wireless access networks is an attractive
research issue in the field of wireless communication. With the rapid
improvement of various wireless network technologies, it is now possible to
provide high quality video transmission over wireless networks. The high
quality video streams need higher bandwidth. Hence, during the video
transmission through wireless networks, it is very important to make the best
utilization of the limited bandwidth. Therefore, when many broadcasting video
sessions are active, the bandwidth per video session can be allocated based on
popularity of the video sessions (programs). Instead of allocating equal
bandwidth to each of them, our proposed scheme allocates bandwidth per
broadcasting video session based on popularity of the video program. When the
system bandwidth is not sufficient to allocate the demanded bandwidth for all
the active video sessions, our proposed scheme efficiently allocates the total
system bandwidth among all the scalable active video sessions in such a way
that higher bandwidth is allocated to higher popularity one. Using the
mathematical and simulation analyses, we show that the proposed scheme
maximizes the average user satisfaction level and achieves the best utilization
of bandwidth. The simulation results indicate that a large number of
subscribers can receive a significantly improved quality of video. To improve
the video quality for large number of subscribers, the only tradeoff is that a
very few subscribers receive slightly degraded video quality.
