Wireless Networking Model Question

Section A

Attempt any two question. (2x10 = 20)

1. What do you mean by multipath propagation? Explain the effects of multipath propagation briefly. Calculate the median path loss using Okumura’s model for the distance of 30Km with base station antenna height of 30m and mobile station height of 2m in a suburban environment. If the base station transmitter radiates an EIRP of 1KW at a carrier frequency of 900MHz, find the power at the receiver (assume a unity gain receiving antenna).

2. What is conflict free multiple access? List out the conflict free multiple access technologies used in wireless communication and explain each briefly.

3. What is interference? Explain the co-channel and adjacent channel interference? How can the effects of such interferences be minimized? Explain briefly.

Section B

Attempt any eight question. (8x5 = 40)

4. What are the different wireless communication standards? List out various WLAN standards with typical features of each.

5. What is bandpass transmission? Why is it used? Explain MPSK.

6. What is handoff in wireless communication? When is it required? Explain the handoff management procedure.

7. How location management is done in cellular networks? Explain briefly.

8. List out the different mobile routing protocols and explain the function of any one protocol.

9. What is mobile-TCP? How it differs with classical TCP? Explain with typical features of mobile-TCP.

10. What are the features of 4G? Explain the challenges to 4G services.

11. What is software defined wireless networks? Explain with its architecture.

12. Write short notes on: (2 x 2.5)

a. Wireless application protocol

b. RFID