Evaluation of shared bandwidth for mobile multimedia networks using a diffusion model

This letter proposes a diffusion model that considers hath mobility and mul timedia based on the user population process to examine the effects of mult imedia in mobile communications. As an application example of this model, t he shared bandwidth that can be used by one user in packet communications i s evaluated. In this model, the user speed and variation in the number of u sers in a cell are interrelated with respect to mobility. By examining the shared bandwidth behavior based on multimedia teletraffic characteristics a ssuming that the number of simultaneously-communicating users within a cell have selfsimilarity, we found that shared bandwidth and its variance are n ot dependent on self-similarity but that variance in the shared bandwidth i s dependent on user speed.