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Detail
Journal Article
Packet Loss Fair Scheduling Scheme for Real-Time Traffic in OFDMA Systems
- Authors
- Seok Joo Shin, Byung Han Ryu
- Issue Date
- 2004-10
- Citation
- ETRI Journal, v.26, no.5, pp.391-396
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- 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