Abstract

This project is concerned with Dynamic Resource Allocation (DRA) for a multimedia cellular DS-CDMA network. DS-CDMA "resources" include transmitted powers, processing gains, and number of codes. Our goals are to (1) Develop techniques for DRA given multiple traffic flows with different Quality of Service (QoS) requirements, and (2)  Characterize performance/complexity tradeoffs associated with these techniques given simple traffic and propagation models. 

Our efforts so far have focused on two service types corresponding to ATM's Constant Bit Rate (CBR) and Available Bit Rate (ABR) traffic classes.  We have formulated and solved analytically static resource allocation problems (given fixed number of requests), and are currently investigating the performance of dynamic resource allocation schemes. These may range from "timid" schemes, which assign resources only once to an existing traffic flow, to "aggressive" schemes, which may attempt to "renegotiate" resources assigned to a traffic flow when a new flow appears or disappears. The performance of these schemes will be compared by analysis (if possible) and simulation.

Students

• Joon Bae Kim (Ph.D. 12/99)
• Ying Zhang (M.S. 6/99)
• Peijuan Liu
• Chi Zhou