On the User-Level Satisfactions with User-Level Utility Functions : A Case Study with Scheduling in TDMA Wireless Networks

概要

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In most cases in wireless networks, a user has a two-way communication that consists of two sessions: uplink and downlink sessions, and its overall satisfaction to the communication depends on the quality of service of both sessions. However, in most previous approaches in wireless resource allocation, the satisfactions of a user for its uplink and downlink sessions are modeled separately and treated independently, which fails to accurately model users overall satisfaction to its communication. Hence, in this paper we model users overall satisfaction to its communication considering both its uplink and downlink sessions. To this end, we propose a novel concept for a utility function to model users overall satisfaction to its communication, which is called a user-level utility function, considering users satisfaction to uplink and downlink sessions jointly. To show the appropriateness of our approach, we apply our user-level utility functions to scheduling problems in TDMA wireless networks and show the performance improvement of our approach over the traditional approach that does not treat uplink and downlink sessions of a user jointly.
（社）電子情報通信学会の論文
2010-04-01