Handoff Strategies – Multiple Choice Questions and Answers (MCQs)

Wireless & Mobile Communications

Set of MCQs (Multiple Choice Questions & Answers) with Answers on Handoff Strategies of Wireless & Mobile Communications in ECE (Electronics & Communication Eng.).

1. What is the condition for handoff?
a) A mobile moves into a different cell while in conversation
b) A mobile remains in the same cell while in conversation
c) A mobile moves to different cell when idle
d) A mobile remains in the same cell and is idle

2. Handoff does not require voice and control channel to be allocated to channels associated with the new base station.
a) True
b) False

3. The time over which a call can be maintained within a cell without handoff is called _________
a) Run time
b) Peak time
c) Dwell time
d) Cell time

4. Dwell time does not depend on which of the following factor?
a) Propagation
b) Interference
c) Distance between subscriber and base station
d) Mobile station

5. Which of the following is associated with the handoff in first generation analog cellular systems?
a) Locator receiver
b) MAHO
c) Cell dragging
d) Breathing cell

6. MAHO stands for ______
a) MSC assisted handoff
b) Mobile assisted handoff
c) Machine assisted handoff
d) Man assisted handoff

7. A handoff is initiated when the power received from the base station of a neighbouring cell falls behind the power received from the current base station by certain level.
a) True
b) False

8. What is the condition for intersystem interference?
a) Mobile moves from one cell to another cell
b) Mobile remains in the same cell
c) Mobile moves from one cellular system to another cellular system
d) Mobile remains in the same cluster

9. What is the disadvantage of guard channel?
a) Efficient utilization of spectrum
b) Cross talk
c) Near far effect
d) Reduce total carried traffic

10. Which of the following priority handoff method decrease the probability of forced termination of a call due to lack of available channels?
a) Queuing
b) Guard channel
c) Cell dragging
d) Near far effect

11. Umbrella cell approach is possible by using _________
a) Antenna of same heights
b) Antenna of different heights
c) Different voice channels
d) Different control channels

12. Cell dragging is a problem occur due to __________
a) Pedestrian users
b) Stationary users
c) High speed mobile systems
d) Base stations having same frequency

13. What was the typical handoff time in first generation analog cellular systems?
a) 1 second
b) 10 seconds
c) 1 minute
d) 10 milliseconds

14. How much time it takes for handoff in digital cellular systems like GSM?
a) 1 second
b) 10 seconds
c) 1 minute
d) 10 milliseconds

15. Soft handoff is also known as _________
a) MAHO
b) Hand over
c) Break before make
d) Make before break

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