wireless world saleh al-abbas 960394 outline introduction. wireless technologies - wi-fi - wimax...
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WIRELESS WORLD
SALEH AL-ABBAS960394
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OUTLINE
INTRODUCTION. WIRELESS TECHNOLOGIES
- Wi-Fi - WiMAX BASIC FUNCTION. EVALUATION CRITERIA. ALTERNATIVE SOLUTIONS. STUDY CASE. CONCLUSION.
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INTRODUCTION
NEED OF NETWORKS. WIRED OR WIRELESS WORLD? IS IT FUTURE TECHNOLOGY? CENTRINO.
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WIRELESS TECHNOLOGIES
WLAN Technologies TO SHARE RESOURCES BETWEEN 2+
NODES. PROVIDES SERVICES. (INTERNET
BROWSING) SUPPORT STREAMING
TECHNOLOGIES. (VIDEO STREAMING) Wi-Fi and WiMAX
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Wi-Fi
WIRELESS FIDELITY. IEEE 802.11a STANDARD COVERS 100 METERS FROM
ACCESS POINT. COST RANGE $150 - $250.
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Enhanced Wi-Fi
IEEE 802.11g STANDARD. COVERS UP TO 500 METERS FROM
ACCESS POINT. COST RANGE $350 - $600.
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Wi-Fi
100 m
500 m
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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
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WiMAX
10 - 48 km
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Basic Function
ESTABLISHCOMMUNICATION
PROVIDECONNECTION
HO
W? W
HY?
FUNCTION Nature, “Service”
USE WIRELESSTECHNOLOGY
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ALTERNATIVES
USE STANDARD Wi-Fi ONLY. ENHANCED Wi-Fi ONLY. WiMax ONLY. ANY COMBINATION. (Complex)
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EVALUATION CRITERIA
COST RANGE AREA/COST RATIO MOBILITY
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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
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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
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REQUIREMENT
RANGE MUST REACH ACCESS POINT
Broken
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STUDY CASE: GOTHAM CITY
PROBLEM. WHY GOTHAM? REPRESENTATIVE OF MOST CITIES
IN THE WORLD NON-UNIFORM SHAPE BIG AREA INFORMATION READINESS
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GOTHAM CITY MAP
20 km
15
km
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WiMAX COVERING GOTHAM
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WiMAX COVERING GOTHAM
2 MORE THAN ENOUGH COST = $40,000
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Wi-Fi COVERING GOTHAM
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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%)
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CONCLUSION
WiMax PROVIDES BEST SOLUTION. MANY ADVANTAGES OTHER THAN
RANGE AND COST. STC TOWERS CAN SERVE AS BASE
STATIONS. (Minimize WiMax cost)
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