Question

What are the units of the primary network?

(a) Primary node and primary base-station

(b) Primary user and primary base-station

(c) Primary user and secondary user

(d) Primary user and primary node

I got this question in homework.

My question comes from The xG Network Architecture in section Next Generation Wireless Network of Cognitive Radio

Answer 1

Right choice is (b) Primary user and primary base-station

The explanation is: Primary users are licensed users of the spectrum. Primary base-station refers to the fixed infrastructure network component with a spectrum license. The primary base-station contains legacy protocols and xG protocols for supporting communication through xG networks.