Umbrella cell approach is possible by using _________(a) Antenna of same heights(b) Antenna of different heights(c) Different voice channels(d) Different control channelsThe question was posed to me during a job interview.My question is from Handoff Strategies in section The Cellular Concept – System Design Fundamentals of Wireless/Mobile

Umbrella cell approach is possible by using _________(a) Antenna of sa

1.	Umbrella cell approach is possible by using _________(a) Antenna of same heights(b) Antenna of different heights(c) Different voice channels(d) Different control channelsThe question was posed to me during a job interview.My question is from Handoff Strategies in section The Cellular Concept – System Design Fundamentals of Wireless/Mobile
Answer» Right choice is (b) Antenna of DIFFERENT heights Best EXPLANATION: Umbrella cell approach is POSSIBLE by using different antenna heights and different power levels. By using this approach, it is possible to provide large and small CELLS which are co-located at a single LOCATION.

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