In this letter, we propose a novel method of implementing an opportunistic priority queuing scheme that supports both latency-sensitive real-time (RT) and best-effort non-realtime (NRT) service classes in mobile broadband wireless (MBWA) systems. It employs an adaptive delay threshold as a dynamic reference of prioritizing the urgent RT service users over others, which allows for fully leveraging the multiuser diversity gain of NRT service users under the varying system conditions. It is shown that the overall system capacity can be further increased by the proposed adaptation rule, as compared with the existing opportunistic priority queuing scheme with the fixed delay threshold.
Bibliographical noteFunding Information:
Manuscript received November 24, 2007. The associate editor coordinating the review of this letter and approving it for publication was F. Granelli. This letter was presented in part at the IEEE Wireless Communications & Networking Conference, January 2006. This research was supported in part by the University IT Research Center Project, Korea and in part by grant No.R01-2003-000-10155-0(2005) from the Basic Research Program of the Korea Science & Engineering Foundation.
- Integrated service
- Mobile broadband wireless access
- Packet scheduling
- Priority queuing
ASJC Scopus subject areas
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering