Variable spreading gain CDMA with adaptive control for integrated traffic in wireless networks

The growth in personal communications and mobile computing has motivated investigation into packetized wireless networks for integrated services such as voice/data/image/video. Variable spreading gain CDMA (VSG-CDMA) is a candidate system that accommodates mixed traffic types and dynamic capacity access. The adaptive multiple access algorithm provides for a graceful integration of various services and can give priority to ongoing services over new access attempts. This algorithm can be implemented distributedly at the mobile stations by a simple downlink broadcast of the uplink load status. Previous work described VSG-CDMA and the dynamic access algorithm. It was shown how the priority feature works for a single service class. In the present paper, the authors extend the analytic study to the case for integrated service types and give numerical results for the integration of voice and data.