Fairness and QoS guarantees of WiMAX OFDMA scheduling with fuzzy controls

Chao Lieh Chen, Jeng Wei Lee, Chi Yuan Wu, Yau Hwang Kuo

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A fairness and QoS guaranteed scheduling approach with fuzzy controls (FQFCs) is proposed for WiMAX OFDMA systems. The controllers, respectively, adjust priority and transmission opportunity (TXOP) for each WiMAX connection according to QoS requirements and service classes. The FQFC provides intra- and interclass fairness guarantees by making connections within the same class achieve equal degree of QoS while at the same time making those without QoS requirements equally share the remaining resources. Even in dynamic environments such as mobile WiMAX networks with time-variant traffic specifications, the FQFC fairly guarantees delay, throughput, and jitter, which are seldom achieved at the same time by state-of-the-art solutions.

Original languageEnglish
Article number512507
JournalEurasip Journal on Wireless Communications and Networking
Volume2009
DOIs
Publication statusPublished - 2009 Apr 9

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Science Applications
  • Computer Networks and Communications

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