STUPIDSID
1(a)
What are the components of sensor nodes?
5 M
1(b)
Explain CSMA/CA technique.
5 M
1(c)
Explain the concept of trusted device with reference to Bluetooth.
5 M
1(d)
Discuss two evolution paths for the GSM to offer 3G services.
5 M
2(a)
Using the following data of for a GSM network, estimate the voice and traffic per subscriber. If there are 40 BTS sites, calculate voice and data traffic per cell.
Subscriber usage per month: 150 minutes
Day per month: 24 Buy hours per day: 6 Allocated spectrum: 4.8 MHz
Frequency reuse plan: 4/12
RF channel width: 200kHz(full rate)
Present number of subscribers in a zone: 50,000 Subscriber growth per year: 5%
Network roll-over period: 4year
Number of packet calls per session (NPCS): 5 (see Figure)
Number of packets within a packet call (NPP):25
Reading time between packet calls (Tr): 120s
Packet size (NBP): 480 bytes
Time interval between two packets inside a packet call (Tint): 0.01 s
Total packet service holding time during one hour( T tot): 3000 s
Busy hour packet sessions per subscriber:0.15
Penetration of data subscriber: 25%
Data rate of each subscriber: 48kbps
Packet transmission time: 10 s
!mage
Subscriber usage per month: 150 minutes
Day per month: 24 Buy hours per day: 6 Allocated spectrum: 4.8 MHz
Frequency reuse plan: 4/12
RF channel width: 200kHz(full rate)
Present number of subscribers in a zone: 50,000 Subscriber growth per year: 5%
Network roll-over period: 4year
Number of packet calls per session (NPCS): 5 (see Figure)
Number of packets within a packet call (NPP):25
Reading time between packet calls (Tr): 120s
Packet size (NBP): 480 bytes
Time interval between two packets inside a packet call (Tint): 0.01 s
Total packet service holding time during one hour( T tot): 3000 s
Busy hour packet sessions per subscriber:0.15
Penetration of data subscriber: 25%
Data rate of each subscriber: 48kbps
Packet transmission time: 10 s
!mage
10 M
2(b)
Explain the ZigBee technology. Discuss different network topologies that are supported in ZigBee.
10 M
3(a)
Discuss WiMAX in detail and compare its performance with Wi-fi.
10 M
3(b)
Explain link budget analysis and requirements of wireless Network.
10 M
4(a)
Explain transmit diversity present in forward link of Cdma 2000.
10 M
4(b)
What are sensor network management design issues? Elaborate any one with example.
10 M
5(a)
Explain Bluetooth security features and Gives its protocol architecture
10 M
5(b)
Draw the neat block diagram of UMTS architecture Explain all interfaces.
10 M
6
Write short notes on
a) HSDPA
b) RFID
a) HSDPA
b) RFID
20 M
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