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 language | English |
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Title of host publication | Proceedings of the 36th Annual IEEE Conference on Local Computer Networks (LCN 2011) |
Editors | Tom Pfeifer, Anura Jayasumana, Nils Aschenbruck |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 501-509 |
Number of pages | 9 |
ISBN (Electronic) | 9781612849287, 9781612849270 |
ISBN (Print) | 9781612849263 |
DOIs | |
Publication status | Published - 2011 |
Externally published | Yes |
Event | 36th Annual IEEE Conference on Local Computer Networks, LCN 2011 - Bonn, Germany Duration: 4 Oct 2011 → 7 Oct 2011 |
Other
Other | 36th Annual IEEE Conference on Local Computer Networks, LCN 2011 |
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Country/Territory | Germany |
City | Bonn |
Period | 4/10/11 → 7/10/11 |