Downlink and uplink resource allocation in IEEE 802.11 wireless LANs

Wireless local area networks (WLANs) based on the IEEE 802.11 standard are becoming increasingly popular and widely deployed. It is likely that WLAN will become an important complementary technology for future cellular systems and will typically be used to provide hotspot coverage. In this paper, th...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2005-01, Vol.54 (1), p.320-327
Main Authors: Sung Won Kim, Byung-Seo Kim, Fang, Yuguang
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Access protocols
Air traffic control
Applied sciences
Cellular
Communication system traffic control
Downlink
Dynamics
Exact sciences and technology
Fairness
hotspot
IEEE 802.11 distributed coordination function (DCF)
Local area networks
Media Access Protocol
Multimedia databases
Resource allocation
Resource management
Stations
Telecommunication traffic
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Traffic flow
Wireless communication
Wireless LAN
wireless local area network (WLAN)
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Summary:Wireless local area networks (WLANs) based on the IEEE 802.11 standard are becoming increasingly popular and widely deployed. It is likely that WLAN will become an important complementary technology for future cellular systems and will typically be used to provide hotspot coverage. In this paper, the complementary use of WLANs in conjunction with mobile cellular networks is studied. We identify the fairness problem between uplink and downlink traffic flows in the IEEE 802.11 distributed coordination function and then propose an easy solution that can be implemented at the access point (AP) in the MAC layer without modification of the standard for stations (STAs). This solution aims at providing a controllable resource-allocation method between uplink and downlink traffic flows and adapting the parameters according to the dynamic traffic load changes. The proposed solution also enhances the system utilization by reducing the probability of frame collision.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2004.838887