Implementation of a novel credit based SCFQ scheduler for Broadband Wireless Access

Emi Garcia-Palacios, Sakir Sezer, Ciaran Toal, Stephen Dawson

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A novel tag computation circuit for a credit based Self-Clocked Fair Queuing (SCFQ) Scheduler is presented. The scheduler combines Weighted Fair Queuing (WFQ) with a credit based bandwidth reallocation scheme. The proposed architecture is able to reallocate bandwidth on the fly if particular links suffer from channel quality degradation .The hardware architecture is parallel and pipelined enabling an aggregated throughput rate of 180 million tag computations per second. The throughput performance is ideal for Broadband Wireless Access applications, allowing room for relatively complex computations in QoS aware adaptive scheduling. The high-level system break-down is described and synthesis results for Altera Stratix II FPGA technology are presented.
Original languageEnglish
Pages (from-to)876-884
Number of pages9
JournalTelecommunications and Networking - ICT2004: Lecturer Notes on Computer Science
Volume3124 (2004)
Publication statusPublished - Aug 2004

ASJC Scopus subject areas

  • Computer Science(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Theoretical Computer Science


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