Utility Maximization for Delay Constrained QoS in Wireless

Computer Science – Networking and Internet Architecture

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

submitted to INFOCOM 2010

Scientific paper

This paper studies the problem of utility maximization for clients with delay based QoS requirements in wireless networks. We adopt a model used in a previous work that characterizes the QoS requirements of clients by their delay constraints, channel reliabilities, and delivery ratio requirements. In this work, we assume that the utility of a client is a function of the delivery ratio it obtains. We treat the delivery ratio for a client as a tunable parameter by the access point (AP), instead of a given value as in the previous work. We then study how the AP should assign delivery ratios to clients so that the total utility of all clients is maximized. We apply the techniques introduced in two previous papers to decompose the utility maximization problem into two simpler problems, a CLIENT problem and an ACCESS-POINT problem. We show that this decomposition actually describes a bidding game, where clients bid for the service time from the AP. We prove that although all clients behave selfishly in this game, the resulting equilibrium point of the game maximizes the total utility. In addition, we also establish an efficient scheduling policy for the AP to reach the optimal point of the ACCESS-POINT problem. We prove that the policy not only approaches the optimal point but also achieves some forms of fairness among clients. Finally, simulation results show that our proposed policy does achieve higher utility than all other compared policies.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Utility Maximization for Delay Constrained QoS in Wireless does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Utility Maximization for Delay Constrained QoS in Wireless, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Utility Maximization for Delay Constrained QoS in Wireless will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-556417

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.