IE 419/519 Wireless Networks

1. IE 419/519Wireless Networks Lecture Notes #1 Course Introduction

2. IE 419/519 Personnel • Instructor: • Dr. J. David Porter • Office 420 Rogers Hall • Phone (541) 737-2446 • Email david.porter@oregonstate.edu • Office hours M W 4:00 – 5:30PM By Appointment

3. Stallings, W., Wireless Communications & Networks, 2nd Edition, Prentice Hall, 2005 Textbook

4. Book References • Stallings, W., Data & Computer Communications, 9th Edition, Prentice Hall, 2011 • Palmer, R., The Bar Code Book, 5th Edition, Helmer’s Publishing, 2007 • Any Visual Basic programming reference book • Any MS Access programming reference book

5. IE 419/519 Websites • Course’s Web Site • http://classes.engr.oregonstate.edu/mime/winter2013/ie519 • Book’s Web Site • http://williamstallings.com/WirelessCommunications/ • Students are responsible for checking course’s web site on a regular basis for updates • Lecture notes will be posted there • PowerPoint format • Course Announcements • Homework Assignments

6. Course Format • Lectures • Two sessions per week • T Th 10:00 – 11:20AM Rogers 332 • Reading Assignments • Homework Assignments • Midterm Examination • Final Examination • Term Project

7. Course Learning Outcomes • All students completing IE 419 or IE 519 should be able to: 1. Understand different types of wireless local area network (WLAN) technologies. 2. Understand the significance that specific layers of the TCP/IP protocol have in wireless communications. 3. Identify the different types of wireless communications protocols contained in the IEEE 802.11 WLAN standard. 4. Identify the most critical antenna design parameters and understand their impact in wireless communications. 5. Understand radio frequency (RF) propagation. 6. Understand spread spectrum technology. 7. Demonstrate knowledge of concepts related with alternative wireless technologies such as radio frequency identification (RFID). 8. Demonstrate the ability to design and implement a wireless data collection system. 9. Demonstrate the ability to communicate and document technical information in a professional, structured, timely, and effective manner.

8. Grading Criteria • Homework 15% • Midterm 25% • Final Exam 25% • Term Project* 35% A student must attend at least 90% of the lecture sessions to be eligible to receive credit for the term project. *

9. Course Policies • Reading Assignments • Reading assignments are required for ALL lecture sessions • Students are strongly advised to complete these assignments before attending the corresponding lecture • Homework • Should be submitted at the beginning of the class on the day is due • Late assignments will not be allowed • Must be completed individually, unless otherwise specified by the instructor

10. Course Policies • Examinations • Students are expected to take the examinations on the scheduled dates • If a student is unable to attend an exam due to verifiable unforeseeable reasons (e.g., illness, accident, etc.), the instructor will, at his discretion, decide whether to designate a make-up date and time for the examination or to shift the weight of the missed examination to the final exam • Exams will be closed-book and closed-notes • The final exam will be cumulative

11. The Term Project

12. When Are Mobile Solutions Appropriate? • When the business currently uses paper forms • When employees need to analyze the information collected at the point of action • When the business suffers from • Poor communications between the office, floor, warehouse, and field • Long accounts receivable cycles and/or poor customer satisfaction • When the business involves inspections, inventory control, auditing, or market research • Great opportunities to improve productivity and efficiency

13. Wireless System Architecture

14. Requirements • Identify Candidate Application Domain • Must include at least two sequential processes • Database System • MS Access • Graphic User Interface • MS Access • Visual Basic/Visual C++ • Client Application • Wavelink Studio

15. Term Project Deliverables • Project Proposal • Weekly Status Report • Final Written Report • Final Presentation • Project Demo • Peer Evaluation • Project Documentation CD

16. Current Process

17. R2WProposed Process

18. Introduction

19. Evolution of Wireless Technology • Nikola Tesla • Invented radio communications • Guglielmo Marconi • Sent telegraphic signals across the Atlantic Ocean • Communications satellites launched in 1960s • Advances in wireless technology • Radio, television, mobile telephone, communication satellites • More recently • Satellite communications, wireless networking, cellular technology

20. Broadband Wireless Technology • Higher data rates achievable with broadband wireless technology • Graphics, video, audio • Shares same advantages of all wireless services

21. Wireless Technologies • Unlicensed Frequency Spectrum • Industrial, Scientific and Medical (ISM) • 915 MHz • 2.45 GHz • 5.8 GHz • Wireless Fidelity (Wi-Fi) • Based on IEEE 802.11 standards • Refers to 802.11-compatible products certified as interoperable by the Wi-Fi Alliance • Covers office and home based LANs as well as hotspots

22. Comparison of Wi-Fi Standards

23. Comparison of Wi-Fi Standards

24. Wireless Technologies (cont.) • Unlicensed Frequency Spectrum • Unlicensed National Information Infrastructure (U-NII) • U-NII devices do not require licensing • Designated to provide short-range, high-speed wireless networking communication at low cost • Three frequency bands (100 MHz each) were set aside by the FCC in 1997 • Objective was to help schools connect to the Internet without the need for hard wiring

25. Wireless Technologies (cont.) • Unlicensed Frequency Spectrum • Unlicensed National Information Infrastructure (U-NII)

26. Wireless Technologies (cont.) • Worldwide Interoperability for Microwave Access (WiMAX) • Similar to Wi-Fi • Range of 40-50 Km • Wireless alternative to cable, DSL, and T1/E1 for last-mile broadband access • Initial developments were in fixed locations but a mobile version was also developed

27. Wireless Technologies (cont.) • ZigBee • Standard ratified on Dec 9, 2004 • Enables reliable, cost-effective, low-power, wirelessly networked, monitoring and control products based on an open global standard • Targeted to sensors and control devices that do not require high bandwidths but do require low latency and very low power consumption • Initial markets • Home control • Building Automation • Industrial Automation

28. Wireless Technologies (cont.) • Ultrawideband • According to the FCC, ultrawideband is any radio technology with a spectrum that occupies greater than 20% of the center frequency or a minimum of 500MHz • An UWB system provides a wireless PAN • Data payload communication capabilities of 53.3, 80, 110, 160, 200, 320, 400, and 480 Mb/s • Employs orthogonal frequency division multiplexing (OFDM) • Technology specification developed by MultiBand OFDM Alliance (MBOA) • Over 170 member companies

29. Limitations and Difficulties • Limitations as well as political and technical difficulties inhibit wireless technologies • Lack of an industry-wide standard • Device limitations • Small LCD on a mobile telephone can only display a few lines of text • Browsers of most mobile wireless devices use wireless markup language (WML) instead of HTML

30. Standards Organizations • National Technical Standard-Setting Organizations: • American National Standards Institute • Institute of Electrical and Electronic Engineers, Inc • National Institute of Standards and Technology • International Standard-Setting Organizations: • International Telecommunication Union • International Standards Organization • European Telecommunications Standards Institute

31. Wireless Technology & Governance • Federal Communications Commission • National Telecommunications and Information Administration • Cellular Telecommunications Industry Association