WIRELESS WORLD

SALEH AL-ABBAS960394

OUTLINE

INTRODUCTION. WIRELESS TECHNOLOGIES

- Wi-Fi - WiMAX BASIC FUNCTION. EVALUATION CRITERIA. ALTERNATIVE SOLUTIONS. STUDY CASE. CONCLUSION.

INTRODUCTION

NEED OF NETWORKS. WIRED OR WIRELESS WORLD? IS IT FUTURE TECHNOLOGY? CENTRINO.

WIRELESS TECHNOLOGIES

WLAN Technologies TO SHARE RESOURCES BETWEEN 2+

NODES. PROVIDES SERVICES. (INTERNET

BROWSING) SUPPORT STREAMING

TECHNOLOGIES. (VIDEO STREAMING) Wi-Fi and WiMAX

Wi-Fi

WIRELESS FIDELITY. IEEE 802.11a STANDARD COVERS 100 METERS FROM

ACCESS POINT. COST RANGE $150 - $250.

Enhanced Wi-Fi

IEEE 802.11g STANDARD. COVERS UP TO 500 METERS FROM

ACCESS POINT. COST RANGE $350 - $600.

Wi-Fi

100 m

500 m

WiMAX

WORLDWIDE INTEROPERABILITY FOR MICROWAVE ACCESS.

IEEE 802.16 STANDARD COVERS 30 MILES (48 KMs) FROM

BASE STATION. (Debatable) RANGE 10 KM FOR CASE STUDY. COST RANGE $10,000 - $20,000

WiMAX

10 - 48 km

Basic Function

ESTABLISHCOMMUNICATION

PROVIDECONNECTION

HO

W? W

HY?

FUNCTION Nature, “Service”

USE WIRELESSTECHNOLOGY

ALTERNATIVES

USE STANDARD Wi-Fi ONLY. ENHANCED Wi-Fi ONLY. WiMax ONLY. ANY COMBINATION. (Complex)

EVALUATION CRITERIA

COST RANGE AREA/COST RATIO MOBILITY

EVALUATION MATRIX

A. COST B. RANGE

C. AREA/COST RATIO

D. MOBILITY

1. Minor preference

2. Medium preference

3. Major preference

A/B C-2 A-2

B/C B/D

C-2

A

B

C

D

B C D Raw score

Assigned weight

A36

B36

C510

D12

COST

RANGE

AREA/COST

MOBILITY

2 10 6 6

1 1 1 5

1 2 2 3

3 5 5 1

TO

TA

L W

EIG

HT

3

2

1

48

52

92

Ranking

1. Standard Wi-Fi 2. Enhanced Wi-Fi3. WiMAX

RANKING1 = POOR

5 = EXCELLENT

REQUIREMENT

RANGE MUST REACH ACCESS POINT

Broken

STUDY CASE: GOTHAM CITY

PROBLEM. WHY GOTHAM? REPRESENTATIVE OF MOST CITIES

IN THE WORLD NON-UNIFORM SHAPE BIG AREA INFORMATION READINESS

GOTHAM CITY MAP

20 km

15

km

WiMAX COVERING GOTHAM

WiMAX COVERING GOTHAM

2 MORE THAN ENOUGH COST = $40,000

Wi-Fi COVERING GOTHAM

Wi-Fi COVERING GOTHAM

ASSUMING GOTHAM AREA 2/3 15x20 KM2 RECTANGLE.

GOTHAM AREA = 200 KM2 = 200,000,000 m2

1 Wi-Fi COVERS 5002 * pi = 785,398 m2

# Wi-Fis REQUIRED = 254 ACCESS POINTS.

COST = $127,000WiMAX SAVINGS= $87,000 (68.5%)

CONCLUSION

WiMax PROVIDES BEST SOLUTION. MANY ADVANTAGES OTHER THAN

RANGE AND COST. STC TOWERS CAN SERVE AS BASE

STATIONS. (Minimize WiMax cost)