Achieving QoS for Aeronautical Telecommunication Networks Over Differentiated Services

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1 NASA/TM Achieving QoS for Aeronautical Telecommunication Networks Over Differentiated Services Haowei Bai and Mohammed Atiquzzaman The University of Dayton, Dayton, Ohio William Ivancic Glenn Research Center, Cleveland, Ohio March 2001

2 The NASA STI Program Office... in Profile Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program Office plays a key part in helping NASA maintain this important role. The NASA STI Program Office is operated by Langley Research Center, the Lead Center for NASA s scientific and technical information. The NASA STI Program Office provides access to the NASA STI Database, the largest collection of aeronautical and space science STI in the world. The Program Office is also NASA s institutional mechanism for disseminating the results of its research and development activities. These results are published by NASA in the NASA STI Report Series, which includes the following report types: TECHNICAL PUBLICATION. Reports of completed research or a major significant phase of research that present the results of NASA programs and include extensive data or theoretical analysis. Includes compilations of significant scientific and technical data and information deemed to be of continuing reference value. NASA s counterpart of peerreviewed formal professional papers but has less stringent limitations on manuscript length and extent of graphic presentations. TECHNICAL MEMORANDUM. Scientific and technical findings that are preliminary or of specialized interest, e.g., quick release reports, working papers, and bibliographies that contain minimal annotation. Does not contain extensive analysis. CONTRACTOR REPORT. Scientific and technical findings by NASA-sponsored contractors and grantees. CONFERENCE PUBLICATION. Collected papers from scientific and technical conferences, symposia, seminars, or other meetings sponsored or cosponsored by NASA. SPECIAL PUBLICATION. Scientific, technical, or historical information from NASA programs, projects, and missions, often concerned with subjects having substantial public interest. TECHNICAL TRANSLATION. Englishlanguage translations of foreign scientific and technical material pertinent to NASA s mission. Specialized services that complement the STI Program Office s diverse offerings include creating custom thesauri, building customized data bases, organizing and publishing research results... even providing videos. For more information about the NASA STI Program Office, see the following: Access the NASA STI Program Home Page at your question via the Internet to Fax your question to the NASA Access Help Desk at Telephone the NASA Access Help Desk at Write to: NASA Access Help Desk NASA Center for AeroSpace Information 7121 Standard Drive Hanover, MD 21076

3 NASA/TM Achieving QoS for Aeronautical Telecommunication Networks Over Differentiated Services Haowei Bai and Mohammed Atiquzzaman The University of Dayton, Dayton, Ohio William Ivancic Glenn Research Center, Cleveland, Ohio National Aeronautics and Space Administration Glenn Research Center March 2001

4 Acknowledgments The authors thank NASA Glenn Research Center for support of this project. Faruque Ahamed carried out some initial work on this project. Available from NASA Center for Aerospace Information 7121 Standard Drive Hanover, MD Price Code: A03 National Technical Information Service 5285 Port Royal Road Springfield, VA Price Code: A03 Available electronically at

5 National Aeronautics and Space Administration Glenn Research Center Our NASA/TM

6 NASA/TM

7 NASA/TM

8 NASA/TM

9 NASA/TM

10 IP Packet ATN Packet Version Field Internet Header Type of service Total Length Identification 0 DF MF Fragment Offset Time to Live Protocol Header checksum Source Address Destination address Options Field Data Network Layer Length Indicator Version/Protocol ID Lifetime SP MS E/R Type Segment Length Checksum Destination Address Length Indicator Destination Address Source Address Length Indicator Source Address Data Unit Identifier Segment Offset Total Length Options Data Priority Priority 1110 high low 0000-normal NASA/TM

11 Management SNMP, COPS etc. Diffserv configuration & management interface Data in Ingress interface Classify, meter, action, queueing Routing core Egress interface Classify, meter, action, queueing Data out QoS control messages QoS agent (optional, e.g. RSVP) NASA/TM

12 Low drop prec AF11 AF21 AF31 AF41 Medium drop prec AF12 AF22 AF32 AF42 High drop prec AF13 AF23 AF33 AF43 Class 1 Class 2 Class 3 Class 4 NASA/TM

13 ATN Packets DS Packets ATN Domain Mapping Function DS Router NASA/TM

14 2 ATN Sources with Priority Code: ATN Sources with Priority Code: ATN Sources with Priority Code: ATN Sources Mb, 0.1ms 2Mb, 0.1ms 2Mb, 0.1ms 2Mb, 0.1ms DS Router 5Mb,1ms DS Router 2Mb, 0.1ms 2Mb, 0.1ms ATN Sinks 2Mb,2Mb, 0.1ms 0.1ms NASA/TM

15 NASA/TM

16 NASA/TM

17 NASA/TM

18 QueueSize QueueSizeVS.Time 0111(AF)q.tr 0000(BE)q.tr 1110(EF)q.tr Time QueueSize QueueSizeVS.Time (AF)q.tr 0000(BE)q.tr 1110(EF)q.tr Time NASA/TM

19 NASA/TM

20 QueueSize QueueSizeVS.Time 0111(AF)q.tr 0000(BE)q.tr 1110(EF)q.tr Time QueueSize QueueSizeVS.Time (AF)q.tr 0000(BE)q.tr 1110(EF)q.tr Time NASA/TM

21 NASA/TM

22 NASA/TM

23 REPORT DOCUMENTATION PAGE Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA , and to the Office of Management and Budget, Paperwork Reduction Project ( ), Washington, DC AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED 4. TITLE AND SUBTITLE 6. AUTHOR(S) March 2001 Achieving QoS for Aeronautical Telecommunication Networks Over Differentiated Services Haowei Bai, Mohammed Atiquzzaman, and William Ivancic Form Approved OMB No Technical Memorandum 5. FUNDING NUMBERS WU A PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) National Aeronautics and Space Administration John H. Glenn Research Center at Lewis Field Cleveland, Ohio PERFORMING ORGANIZATION REPORT NUMBER E SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) National Aeronautics and Space Administration Washington, DC SPONSORING/MONITORING AGENCY REPORT NUMBER NASA TM SUPPLEMENTARY NOTES Haowei Bai and Mohammed Atiquzzaman, Department of Electrical and Computer Engineering, The University of Dayton, Dayton, Ohio (work funded by NASA Grant NAG3 2318); and William Ivancic, NASA Glenn Research Center. Responsible person, William D. Ivancic, organization code 5610, a. DISTRIBUTION/AVAILABILITY STATEMENT Unclassified - Unlimited Subject Category: 17 Available electronically at This publication is available from the NASA Center for AeroSpace Information, ABSTRACT (Maximum 200 words) Distribution: Nonstandard 12b. DISTRIBUTION CODE Aeronautical Telecommunication Network (ATN) has been developed by the International Civil Aviation Organization to integrate Air-Ground and Ground-Ground data communication for aeronautical applications into a single network serving Air Traffic Control and Aeronautical Operational Communications. To carry time critical information required for aeronautical applications, ATN provides different Quality of Services (QoS) to applications. ATN has therefore, been designed as a standalone network which implies building an expensive separate network for ATN. However, the cost of operating ATN can be reduced if it can be run over a public network such as the Internet. Although the current Internet does not provide QoS, the next generation Internet is expected to provide QoS to applications. The objective of this paper is to investigate the possibility of providing QoS to ATN applications when it is run over the next generation Internet. Differentiated Services (DiffServ), one of the protocols proposed for the next generation Internet, will allow network service providers to offer different QoS to customers. Our results show that it is possible to provide QoS to ATN applications when they run over a DiffServ backbone. 14. SUBJECT TERMS Protocol; Internet 17. SECURITY CLASSIFICATION OF REPORT Unclassified 18. SECURITY CLASSIFICATION OF THIS PAGE Unclassified 19. SECURITY CLASSIFICATION OF ABSTRACT Unclassified 15. NUMBER OF PAGES 16. PRICE CODE 20. LIMITATION OF ABSTRACT NSN Standard Form 298 (Rev. 2-89) Prescribed by ANSI Std. Z A03

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