CBTC over WI-FI: gathering clouds

This paper explores the challenges that modern Communications-Based Train Control (CBTC) systems pose to IEEE 802.11 Wi-Fi radio networks. We will describe how Wi-Fi, in spite having been designed as a “best-effort” system, became the radio bearer of choice for a safety-critical and mission-critical application such as CBTC. We will explore the limitations inherent in the IEEE 802.11 protocols with regards to range, mobility, radio resource access, Quality of Service and interference. We will then briefly describe some potential mitigations, and we will mention the latest development in the industry that are moving towards a replacement of the Wi-Fi-based CBTC radio for an LTE system.

• Record URL:
  http://railknowledgebank.com/Presto/content/Detail.aspx?ctID=MTk4MTRjNDUtNWQ0My00OTBmLTllYWUtZWFjM2U2OTE0ZDY3&rID=MjQ2MA==&sID=NA==&ph=VHJ1ZQ==&qcf=MTk4MTRjNDUtNWQ0My00OTBmLTllYWUtZWFjM2U2OTE0ZDY3&bckToL=VHJ1ZQ==
• Authors:
  • Alvarez R
• Conference:
  • AusRAIL PLUS 2014, Doing it Smarter. People, Power, Performance, 24-26 November 2014, Melbourne, Vic, Australia
• Publication Date: 2014

Media Info

• Pagination: 9p. ; PDF
• Monograph Title: AusRAIL PLUS 2014, doing it smarter. People, power, performance, 24-26 November 2014, Melbourne, Vic, Australia

Subject/Index Terms

• TRT Terms: Communication systems; Intelligent transportation systems; Radio; Telecommunications
• ATRI Terms: Communications; Intelligent transport systems (ITS); Radio; Telecommunications
• Subject Areas: Operations and Traffic Management;

Filing Info

• Accession Number: 01550325
• Record Type: Publication
• Source Agency: ARRB
• Files: ATRI
• Created Date: Jan 21 2015 11:23AM