Efficient polling scheme for multiple direct link communication between stations in infrastructure mode IEEE 802.11 wireless LANs

Efficient polling scheme for multiple direct link communication between stations in infrastructure mode IEEE 802.11 wireless LANs

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Article ID: iaor20081806
Country: South Korea
Volume: 33
Issue: 2
Start Page Number: 237
End Page Number: 245
Publication Date: Jun 2007
Journal: Journal of the Korean Institute of Industrial Engineers
Authors:
Keywords: telecommunications
Abstract:

In this paper, a modified PCF (Point Coordination Function) MAC (Medium Access Control) protocol is proposed to support the multiple direct link communication between STAs (STAtions) in infrastructure mode IEEE 802.11 wireless LANs. By the proposed MAC protocol, the direct link communication between STAs, which are located within the communication range of each other, is allowed without the use of AP (Access Point) as a relay. Moreover, when multiple direct data communication between STAs can be simultaneously performed with a sufficiently small interference, multiple simultaneous direct link communication is allowed for the efficient use of radio bandwidth. AP polls STAs to grant the transmission opportunities using the direct link communication by transmitting the polling frames to STAs. An efficient polling method for granting the transmission opportunities to STAs is proposed to reduce the number of the polling frame transmissions and enhance the PCF MAC performance.

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