Real-time industrial communication over IEEE802.11e wireless local area networks

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Raimundo Viegas (Author) Other; L. A. Guedes (Author) Other; Francico Vasques (Author) FEUP; Paulo Portugal (Author) FEUP; Ricardo Moraes (Author) Other; Luiz Affonso (Author) Other

Journal

Title: IEEE Latin America Transactions

Vol. 10 No. 3

Pages: 1844-1849

ISSN: 1548-0992

Publisher: IEEE

Indexing

ISI Web of Knowledge - 3 Citations

ISI Web of Science

Scopus - 3 Citations

INSPEC

Scientific classification

CORDIS: Technological sciences > Engineering > Electrical engineering

Other information

Authenticus ID: P-002-B7C

DOI: 10.1109/tla.2012.6222592

Abstract (EN): This paper proposes a real-time communication scheme for wireless local area network (WLAN) infrastructure. This strategy was called Group Sequential Communication (GSC). The GSC has the main goal to reduce the network overhead due to the Polling, Ack and QoS Null Frames of Hybrid Coordination Function Controlled Channel Access (HCCA) in IEEE 802.11e, because it uses a Virtual Token Passing procedure to priority the real-time communication over WLAN. In order to improve the confiability of the new scheme is presented a fault-tolerant mechanism based on Block-Ack strategy to avoid missing real-time messages. The GSC was implemented in NS2 and simulation results have proved the superior performance of GSC in comparison with HCCA for real-time industrial communications.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 6