Utility based service differentiation in wireless packet network

Abstract

A new wireless packet scheduling scheme is proposed to support differential services to different users over the forward wireless links whose transmission speed changes due to the ever-changing channel conditions. The scheme is intended to maximize the overall system satisfaction level using utility function. Internet applications of elastic, delay adaptive real-time, and rate adaptive real-time types are considered. Obtaining the optimal control scheme is a complicated problem, requiring detailed information on the channel statistics. Even if it were known, the computations would be significantly hampered by the curse of dimensionality. So, a heuristic method, which can run online, is proposed and its performance is evaluated. © Springer-Verlag Berlin Heidelberg 2005.