Question

Which among the following statement is false about cooperative sensing?

(a) Cooperative spectrum sharing is alternately known as collaborative spectrum sharing

(b) Cooperative spectrum sharing studies the effect of communication of one node on other nodes

(c) Cooperative spectrum sharing withholds the interference information

(d) Cooperative spectrum sharing minimizes collision caused by users accessing the same portion of the spectrum

The question was posed to me at a job interview.

Asked question is from Next Generation Wireless Network in division Next Generation Wireless Network of Cognitive Radio

Answer 1

The correct answer is:

(c) Cooperative spectrum sharing withholds the interference information

This statement is false because cooperative spectrum sharing involves sharing interference information among the cognitive radio nodes to improve spectrum management and avoid interference. The whole idea behind cooperative sensing is for nodes to work together to sense the spectrum and share information about the availability of spectrum and any interference they might experience, thus enabling more efficient and coordinated spectrum usage.

Here’s why the other statements are true:

• (a) Cooperative spectrum sharing is alternately known as collaborative spectrum sharing: This is true. "Cooperative" and "collaborative" spectrum sharing are often used interchangeably in the context of cognitive radio networks.

• (b) Cooperative spectrum sharing studies the effect of communication of one node on other nodes: This is true. Cooperative spectrum sharing considers how the actions of one node (such as transmission or sensing) can impact other nodes in the network, ensuring that the spectrum is used efficiently and without causing interference.

• (d) Cooperative spectrum sharing minimizes collision caused by users accessing the same portion of the spectrum: This is true. By sharing sensing data and interference information, cooperative spectrum sharing helps minimize collisions and conflicts when multiple users access the same frequency band.