In this paper, we consider the effect of multiplexing users in a frame (more specifically, coherent time) on providing quality of service (QoS) in multiuser wireless networks. For this purpose, we propose simple and efficient scheduling schemes that can yield substantial capacity gain. Our approach involves maximizing the throughput subject to a given delay QoS constraint by choosing the appropriate number of users to be served in a frame. We call this number the degree of multiplexing. We investigate the effect of the degree of multiplexing on QoS performance in wireless multiuser scheduling by analyzing the effective capacity and then develop an approach to finding the optimal degree of multiplexing by asymptotic approximation.
Bibliographical noteFunding Information:
Manuscript received April 2, 2009; revised December 3, 2009; accepted January 20, 2010. Date of publication February 2, 2010; date of current version June 16, 2010. This work was supported in part by Korea Science and Engineering Foundation through the National Research Laboratory Program under Grant R0A-2007-000-20043-0 and in part by the Ministry of Knowledge Economy, Korea, under the Information Technology Research Center Support Program supervised by the National IT Industry Promotion Agency under Grant NIPA-2009-(C1090-0902-0005). The review of this paper was coordinated by Prof. S. Ci.
All Science Journal Classification (ASJC) codes
- Automotive Engineering
- Aerospace Engineering
- Electrical and Electronic Engineering
- Applied Mathematics