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Wireless Networks and Mobile Computing Professor Honggang Wang.

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Presentation on theme: "Wireless Networks and Mobile Computing Professor Honggang Wang."— Presentation transcript:

1 Wireless Networks and Mobile Computing Professor Honggang Wang.

2 Outline Reasons to take this class Syllabus Course goals Introduction Survey

3 Three Reasons to Take This Class Wireless networks and mobile computing are everywhere, and changing our world. What is their future? Tons of job opportunities are available for wireless network engineers in current job market Includes both lecture and hands-on project design, gain practical experiences

4 Job Opportunities

5 Some Network Companies of Top Fortune 500 Fortune rank: profit: $8.05 Billion Avg. pay in that job: $131,703 Fortune rank: profit: $12.87 Billion Fortune rank: profit: $86.41 Billion Fortune rank: 244 Avg. pay in that job: $102,030 QUALCOMM

6 Syllabus See handout What to learn? The fundamental theory Practical experiences

7 Class Goals 7 Understand challenges and opportunities Learn both fundamentals and applications of wireless networking and mobile computing Obtain hands-on experiences through research projects (e.g., protocol design, wireless and mobile device development)

8 Introduction

9 Goal of Wireless Networks and Mobile Computing 9 People and their machines should be able to access information and communicate with each other easily and securely, in any medium or combination of media – voice, data, image, video, or multimedia – any time, anywhere, in a timely, cost-effective way. Dr. G. H. Heilmeier, Oct 1992

10 Wireless Networks and Mobile Computing Two aspects of mobility: user mobility: users communicate (wireless) anytime, anywhere, with anyone device portability: devices can be connected anytime, anywhere to the network Wireless vs. mobile Examples stationary computer notebook in a hotel wireless LANs in historic buildings Personal Digital Assistant (PDA) The demand for mobile communication creates the need for integration of wireless networks into existing fixed networks: local area networks: standardization of IEEE Internet: Mobile IP extension of the internet protocol IP wide area networks: e.g., internetworking of GSM and ISDN, VoIP over WLAN and POTS

11 Enabling Technologies 11 Development and deployment of wireless/mobile technology and infrastructure in-room, in-building, on-campus, in-the-field, MAN, WAN Miniaturization of computing machinery... -> PCs -> laptop -> PDAs/smart phones -> embedded computers/sensors Improving device capabilities/software development environments, e.g., andriod: iphone: windows mobile

12 Mobile devices performance Pager receive only tiny displays simple text messages Mobile phones voice, data simple graphical displays PDA graphical displays character recognition simplified WWW Smartphone tiny keyboard simple versions of standard applications Laptop/Notebook fully functional standard applications Sensors, embedded controllers No clear separation between device types possible (e.g. smart phones, embedded PCs, …)

13 Mobile and Wireless Services – Always Best Connected UMTS, DECT 2 Mbit/s UMTS Rel kbit/s LAN 100 Mbit/s, WLAN 54 Mbit/s UMTS Rel kbit/s GSM 115 kbit/s, WLAN 11 Mbit/s GSM 53 kbit/s Bluetooth 500 kbit/s GSM/EDGE 135 kbit/s, WLAN 780 kbit/s LAN, WLAN 780 kbit/s

14 At Home WiFi cellular bluetooth UWB satellite WiFi g/n

15 On the Move Source:

16 Wearable Health Monitoring Application (ECG) through Wireless Networks Low cost wireless ECG medical sensor device has been built and tested to trace ECG signal through wireless networks. Then patients can freely walk around while patients can be monitored from anywhere!!! Wireless ECG system Traditional ECG system

17 Wearable Patient Monitoring Application (ECG) Through Wireless Networks Wearable Resilient Electrocardiogram (ECG) networked sensor device used for patient monitoring Wireless ECG medical sensor Software GUI interface

18 On the Road ad hoc GSM/UMTS, cdmaOne/cdma2000, WLAN, GPS DAB, TETRA,... road condition, weather, location-based services, emergency

19 Course Coverage Application Transport Network Data Link Physical Medium Data Link Physical Application Transport Network Data Link Physical Data Link Physical Network Radio Often we need to implement a function across multiple layers.

20 Survey

21 Reference Mobile Communication book

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