상세정보
학술지
Packet Loss Fair Scheduling Scheme for Real-Time Traffic in OFDMA Systems
- 저자
- 신석주, 유병한
- 발행일
- 200410
- 출처
- ETRI Journal, v.26 no.5, pp.391-396
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 04MM1100, 4세대 이동통신 기술개발, 황승구
- 초록
- In this paper, we propose a packet scheduling discipline called packet loss fair scheduling, in which the packet loss of each user from different real-time traffic is fairly distributed according to the quality of service requirements. We consider an orthogonal frequency division multiple access (OFDMA) system. The basic frame structure of the system is for the downlink in a cellular packet network, where the time axis is divided into a finite number of slots within a frame, and the frequency axis is segmented into subchannels that consist of multiple subcarriers. In addition, to compensate for fast and slow channel variation, we employ a link adaptation technique such as adaptive modulation and coding. From the simulation results, our proposed packet scheduling scheme can support QoS differentiations while guaranteeing short-term fairness as well as long-term fairness for various real-time traffic.
- KSP 제안 키워드
- Adaptive Modulation and Coding(AMC), Fair Scheduling, Frame structure, Frequency division multiple access(FDMA), Link Adaptation(LA), OFDMA systems, Orthogonal Frequency Division Multiple Access(OFDMA), Packet network, Packet scheduling, Scheduling Scheme, Service requirements