상세정보
학술대회
Delay Threshold-Based Priority Queueing Packet Scheduling for Integrated Services in Mobile Broadband Wireless Access System
- 저자
- 김동회, 강충구
- 발행일
- 200509
- 출처
- International Conference on High Performance Computing and Communications (HPCC) 2005 (LNCS 3726), v.3726, pp.305-314
- 협약과제
- 05MM1100, 4세대 이동통신 기술개발, 황승구
- 초록
- In this paper, we present an opportunistic packet scheduling algorithm to support both real-time (RT) and non-real-time (NRT) services in mobile broadband wireless access (MBWA) systems. Our design objective is to determine the maximum number of RT and NRT users with respect to the overall service revenue while satisfying individual QoS requirements, e.g., the maximum allowable packet loss rate for RT traffic and the minimum reserved bit rate for NRT traffic. As opposed to a typical priority queueing-based scheduling scheme in which RT users are always served a prior to NRT users while NRT users are served with the remaining resource, the proposed scheme takes the urgency of the RT service into account only when their head-of-line (HOL) packet delays exceed a given threshold. The delay threshold-based scheduling scheme allows for leveraging the multi-user diversity of NRT users, eventually maximizing the overall system throughput. By evaluating the proposed approach in an orthogonal frequency division multiple access/frequency division duplex (OFDMA/FDD)-based mobile access system, it is shown that the overall system throughput can be significantly improved in terms of the number of users or total service revenue. © Springer-Verlag Berlin Heidelberg 2005.
- KSP 제안 키워드
- Bit Rate, Broadband Wireless Access(BWA), Delay threshold, Design objective, Frequency division multiple access(FDMA), Integrated Services(InterServ), Mobile Broadband, Multiuser diversity, Number of users, Opportunistic Packet Scheduling, Orthogonal Frequency Division Multiple Access(OFDMA)