A new MAC scheme specifically suited for real-time industrial communication based on IEEE 802.11e

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Raimundo Viegas Jr. (Author) Other; Luiz Affonso Guedes (Author) Other; Francisco Vasques (Author) FEUP; Paulo Portugal (Author) FEUP; Ricardo Moraes (Author) Other

Journal

Title: COMPUTERS & ELECTRICAL ENGINEERING

Vol. 39 No. 6

Pages: 1684-1704

ISSN: 0045-7906

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 19 Citations

ISI Web of Science

Scopus - 24 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Electrical engineering

Other information

Authenticus ID: P-006-8F8

DOI: 10.1016/j.compeleceng.2012.10.008

Abstract (EN): This paper proposes a new real-time communication scheme for 802.11e wireless networks. This scheme is called Group Sequential Communication (GSC). The GSC improves the efficiency of the Hybrid Coordination Function Controlled Channel Access (HCCA) mechanism by reducing the protocol overheads of the 802.11e amendment. The GSC approach eliminates the polling scheme used in traditional scheduling algorithm, by means of a virtual token passing procedure among members of the real-time group to whom is granted a high-priority and sequential access to communication medium. In order to improve the reliability of the proposed scheme, it is also proposed an error recovery mechanism based on block acknowledgment. The GSC was implemented in network simulator software and the performance results were compared to HCCA scheme, showing the efficient of the proposed approach when dealing with traditional industrial communication scenarios.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 21