Title: Co-DRR: An integrated uplink and downlink scheduler for bandwidth management over wireless LANs
Authors: Wei, Huan-Yun
Chiang, Ching-Chuang
Lin, Ying-Dar
資訊工程學系
Department of Computer Science
Keywords: scheduling;fair queuing;bandwidth management;deficit round robin;802.11b
Issue Date: 1-Aug-2007
Abstract: Bandwidth management over wired bottleneck links has been an effective way to utilize network resources. For the rapidly emerging IEEE 802.11b Wireless LAN (WLAN), the limited WLAN bandwidth becomes a new bottleneck and requires bandwidth management. Most possible existing solutions only exclusively focus on optimizing multimedia traffic, pure downlink or pure uplink fairness, or are incompatible with IEEE 802.11b. This study proposes a cooperative deficit round robin (co-DRR), an IEEE 802.11b-compatible host-based fair scheduling algorithm based on the deficit round robin (DRR) and distributed-DRR (DDRR) schemes, to make the uplink and downlink quantum calculations cooperate to simultaneously control uplink and downlink bandwidth. Co-DRR uses the standard PCF mode to utilize the contention-free period to compensate for the unfairness in the contention period. Numerical results demonstrate that: co-DRR can scale up to 100 mobile hosts even under high bit error rate (0.0001) while simultaneously achieving uplink/downlink long-term fairness (CoV < 0.01) among competing mobile hosts.
URI: http://dx.doi.org/10.1093/ietcom/e90-b.8.2022
http://hdl.handle.net/11536/10516
ISSN: 0916-8516
DOI: 10.1093/ietcom/e90-b.8.2022
Journal: IEICE TRANSACTIONS ON COMMUNICATIONS
Volume: E90B
Issue: 8
Begin Page: 2022
End Page: 2033
Appears in Collections:Articles