Exploiting the full potential of multi-AP diversity in centralized WLANs through back-pressure scheduling

Anfu Zhou*, Min Liu, Tong Shu, Yilin Song, Zhongcheng Li

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

1 Citation (Scopus)

Abstract

Centralized WLANs widely deployed in enterprise environment or university campus often have high density of Access Point (AP). The high density leads to multi-AP diversity, which brings possibility to improve network performance. Previous studies have proposed different schemes to exploit multi-AP diversity, however, these schemes are all based on heuristic and cannot guarantee an optimal exploitation of multi-AP diversity. In this paper, we propose a Theory Based Centralized Scheduling (TBCS) to exploit the full potential of multi-AP diversity. TBCS is based on the well-known back-pressure scheduling. Although back-pressure scheduling is proved to be throughput-optimal, most of previous studies are purely theoretical. To make a practical use of the theoretical back-pressure scheduling, we design new mechanisms in TBCS to handle the problem caused by the wired/wireless mixed scenario of centralized WLANs and to synchronize the scheduling. We evaluate TBCS through NS-2 simulations and show that compared with previous methods, TBCS can support the largest capacity region and greatly improves the throughput of a network.

Original languageEnglish
Title of host publicationProceedings of the 36th Annual IEEE Conference on Local Computer Networks (LCN 2011)
EditorsTom Pfeifer, Anura Jayasumana, Nils Aschenbruck
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages501-509
Number of pages9
ISBN (Electronic)9781612849287, 9781612849270
ISBN (Print)9781612849263
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event36th Annual IEEE Conference on Local Computer Networks, LCN 2011 - Bonn, Germany
Duration: 4 Oct 20117 Oct 2011

Other

Other36th Annual IEEE Conference on Local Computer Networks, LCN 2011
CountryGermany
CityBonn
Period4/10/117/10/11

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Zhou, A., Liu, M., Shu, T., Song, Y., & Li, Z. (2011). Exploiting the full potential of multi-AP diversity in centralized WLANs through back-pressure scheduling. In T. Pfeifer, A. Jayasumana, & N. Aschenbruck (Eds.), Proceedings of the 36th Annual IEEE Conference on Local Computer Networks (LCN 2011) (pp. 501-509). Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/LCN.2011.6115512