Presentation is loading. Please wait.

Presentation is loading. Please wait.

Wireless Networks and Mobile Computing

Similar presentations

Presentation on theme: "Wireless Networks and Mobile Computing"— Presentation transcript:

1 Wireless Networks and Mobile Computing
Professor Honggang Wang.

2 Outline Reasons to take this class Syllabus Course goals Introduction

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:12 2008 profit: $8.05 Billion Avg. pay in that job: $131,703 Fortune rank: 7 2008 profit: $12.87 Billion Fortune rank: 16 2008 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 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
“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
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 We are getting closer to the goal because of advances in enabling technologies.

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

13 Mobile and Wireless Services – Always Best Connected
UMTS Rel. 5 400 kbit/s LAN 100 Mbit/s, WLAN 54 Mbit/s GSM 53 kbit/s Bluetooth 500 kbit/s LAN, WLAN 780 kbit/s UMTS, DECT 2 Mbit/s GSM/EDGE 135 kbit/s, WLAN 780 kbit/s UMTS Rel. 6 400 kbit/s GSM 115 kbit/s, WLAN 11 Mbit/s

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

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!!! Traditional ECG system Wireless ECG system

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

18 On the Road GSM/UMTS, cdmaOne/cdma2000, WLAN, GPS ad hoc
DAB, TETRA, ... ad hoc Vehicles transmission of news, road condition, weather, music via DAB personal communication using GSM position via GPS local ad-hoc network with vehicles close-by to prevent accidents, guidance system, redundancy vehicle data (e.g., from busses, high-speed trains) can be transmitted in advance for maintenance Emergencies early transmission of patient data to the hospital, current status, first diagnosis replacement of a fixed infrastructure in case of earthquakes, hurricanes, fire etc. crisis, war, ... road condition, weather, location-based services, emergency

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

20 Survey

21 Reference
Mobile Communication book

Download ppt "Wireless Networks and Mobile Computing"

Similar presentations

Ads by Google