Question

Which among the following is a building unit of cross-layer hub?

(a) Cross-layer intra hub module

(b) Cross-layer interface

(c) Cross-layer scheduler

(d) Cross-layer director

I have been asked this question at a job interview.

I'm obligated to ask this question of Next Generation Wireless Network topic in portion Next Generation Wireless Network of Cognitive Radio

Answer 1

The correct answer is (a) Cross-layer intra hub module

The explanation: Cross design involves the sharing of information among different layers of the protocol stack. For example, spectrum occupancy information gathered in the physical layer must be accurately transferred to the MAC layer through a proper interface. The units required to implement the cross-layer design are interfaces, controllers, schedulers, and inter hubs.