NDLI: A space-division time-division multiple access scheme for high throughput provisioning in WLANs

Content Provider	IEEE Xplore Digital Library
Author	Bianchi, G. Messina, D. Scalia, L. Tinnirello, I.
Copyright Year	2005
Description	Author affiliation: Dipartimemo di Ingegneria Elettronica, Universite degli Studi di Roma, Rome, Italy (Bianchi, G.)
Abstract	Directional antennas may dramatically increase the capacity of a wireless LAN by allowing several stations to simultaneously communicate. Since deployment of directive/smart antennas on the customer's terminals is awkward (for technological, cost, robustness, and convenience reasons) it is of interest to deploy advanced antenna solutions only at the access point. When omnidirectional transmissions are used at the mobile stations, the asynchronous nature of the 802.11 MAC handshake structurally limits the possibility to exploit spatial reuse. Significant throughput enhancements can be achieved only at the expense of redesigning (part of) the 802.11 MAC protocol: mainly a form of synchronization is required. This paper addresses this problem and proposes a novel solution, devised to operate in the above scenario. The system operation is based on the joint usage of space division and time division multiple access techniques. A synchronous time-division structure avoids unwanted interference among different antenna coverage regions. Backward compatibility with legacy IEEE 802.11 terminals is also accounted for.
Starting Page	2728
Ending Page	2733
File Size	188584
Page Count	6
File Format	PDF
ISBN	0780389387
DOI	10.1109/ICC.2005.1494844
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-16
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Throughput Directive antennas Directional antennas Wireless LAN Space technology Costs Robustness Media Access Protocol Access protocols Time division multiple access
Content Type	Text
Resource Type	Article

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