The third generation (3G) of wireless systems will support varieties of voice and non-voice applications.  The modeling of such heterogeneous networks is a very active research area both in wired and wireless applications.  In the wireless environment, there are two competing multiple access methods: TDMA and CDMA.  Each scheme has its unique problems in handling multimedia traffic.   In this project, we investigate by means of modeling and computer simulations some problems associated with CDMA multimedia access.  In particular, we address the problem of hand-off among antenna sectors or base stations and we also address the problem of power control.  While these problems have been studied in voice only wireless networks, the introduction of burst transmission modes with long silence gaps and variable bit rate requirements will change the nature of the problem.

The main thrust of the research is to develop appropriate models for hand-off and power control for multi-rate and/or bandwidth-on-demand environment.  The proposed models will be tested by means of computer simulations.  The simulation models will be based on some exiting software tools.  Part of the work is to modify and expand these tools to build a test bed for the proposed models.