STUPIDSID
1(a)
Consider a mobile user who is migrating from a place to another place provide him a seamless service by satellite system,also sketch the architecture.
10 M
1(b)
A certain city has an area of 1300 square miles and is covered by a Marcellus system using a seven cell reuse pattern "Each cell has a radius of 4 miles and the city has 40MHz spectrum with a full duplex channel bandwidth of 60KHz find:
The number of cells in the service area 7
The number of channel per cell 1500
Total number of subscribers that can be served 10500
The number of cells in the service area 7
The number of channel per cell 1500
Total number of subscribers that can be served 10500
10 M
2(a)
Write about types of antennas and their radiation pattern?
10 M
2(b)
Describe how data encryption is done in GSM system,with diagram explaining the role of SIM ,A3,A5 and AB algorithm.
10 M
3(a)
What are various types of satellites are used?Describe there functionality and also explain the concept of localization,routing and handover in them.
10 M
3(b)
The channel access control sub-layer of HiperLAN offers a connectionless data transfer service to the higher MAC layer.Justify the above statement with related references.
10 M
4(a)
What is the fundamental different of WML compared to HTML? Why is this difference important with respect to handled devices? What is specified in addition to save bandwidth?
10 M
4(b)
What are the general problem of mobile IP regarding security and support of quality of service?
10 M
5(a)
Explain the transaction classes provided by wireless Transaction protocol(WTP)?Also explain services provided by wireless protocol(WSP)?
10 M
5(b)
What are the modification require to an existing GSM network to be upgraded to GPRS?Explain with the help of Diagram.
10 M
6(a)
Discuss the PHY frame formate of an IEEE 802.11 using the spread spectrum techniques which separates by code.
10 M
6(b)
Discuss IMT 2000 system.
10 M
7(a)
Explain in short wireless security Threats.
5 M
7(b)
What do you mean by WiMAX? In what way it is similar to DSL?
5 M
7(c)
Discuss about Link Management in Wireless ATM.
5 M
7(d)
What is handoff? What is roaming? How do you perform handoff during roaming?
5 M
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