Assignment: Mobile Computing And Wireless Applications
Problem 1. General Principles
1.1: Which of the following statements are false (pick only 5 that you are sure about, not more)-
a. M-CRM is considered a MEBA
b. WML can be used to develop mobile applications
c. Symbian is a database manager on wireless devices
d. FDMA allocates frequencies to each user
e. CDMA is good for error recovery
f. A wireless gateway translates wireless to non-wireless communications.
g. FEC is used to retransmit the message in error
h. Mobile IP supports handoffs in IP-based systems
i. Lower frequencies are very congested because most providers want to use them
j. Location based services are important for wireless as well as wired systems
k. OFDM is used in 802.11n
l. IEEE 802.11i specifies quality of service of 802.11 networks
m. IEEE 802.11e is used for real-time support of 802.11 networks
n. Mobile computing platforms are different because wireless networks are too slow
o. OFDM is a layer 1 technology
p. GPS requires special software/hardware on the handset
q. Satellites are slower than fiber optic cables.
r. LEOs have lower delays than GEOs
s. Weather satellites are usually Polar
t. WiMAX supports fixed as well as mobile users
u. Higher frequency waves travel longer distances
1.2: Show (by using an X) which wireless technology is most appropriate for the following connection situations.
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Connection Situations using Wireless
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802.11 (WiFi)
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3G+ Cellular Network
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WiMax
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Wireless Sensor Network
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Satellites
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Others (e.g., FSO, Bluetooth) - specify
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Laptop (on third floor) to a printer on the first floor of an office
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Laptop to Mouse
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Wristwatch to your laptop
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Two offices located 300 feet from each other for a very fast connection
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Thermostats to a monitor
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Phones to your Laptop
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A telephone chat between you in a car and a friend in a train
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ISP and TV station to a remote village with very sparse population
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An office in Harrisburg with an office in Mechanicsburg
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An office in New Jersey with an office in Korea
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Problem 2
Suppose you have been asked to help a small university, roughly of the size of HU, located in a small island in the Pacific Ocean is planning to offer online courses to students living in nearby islands located between 10 to 500 miles away. You can assume that the university building is similar to the HU building.
You should do Part A (Technical) or Part B (Management), notboth.
Part A (Technical): Network design for the university that will be used to support these educational services. You should propose the following:
• Wireless LANs in the university campus (one ppt slide, embedded in this word doc, showing conceptual design)
• Wireless metropolitan area networks (one ppt slide, embedded in this word doc, showing conceptual design)
• Wireless wide area networks to support remote users (one ppt slide, embedded in this word doc, showing conceptual design)
Part B (Management): A management plan that shows
• Wireless network management approach showing the key five elements (one sentence each)
• 5 basic policies needed for this problem (BYOD is one, name other 4)
• Frequency allocations for the three types of networks listed in part A (suggest a range, e.g., 2-4 MHz, and justify why - one sentence per network type)