Question

Which among the following statements is false about the introduction of a cognitive radio in a wireless regional area network?

(a) Availability of spectrum access information to the secondary user

(b) Availability of spectrum access information to the primary user

(c) Knowledge of antenna height

(d) Usage pattern of wireless regional area network

I had been asked this question in an online interview.

This intriguing question comes from Next Generation Wireless Network topic in portion Next Generation Wireless Network of Cognitive Radio

Answer 1

The correct answer is (b) Availability of spectrum access information to the primary user

Explanation: The wireless regional area network comprises base stations, repeaters, and consumer premise equipment. It provides fixed wireless access services in rural areas. The inclusion of a radio environment map provides knowledge of location, antenna height, transmission power, and opportunistic spectrum access. It provides knowledge distribution and usage patterns of secondary users.