Question

What is cross-layer design?

(a) Cross-layer design allows non adjacent layers to exchange information which are traditionally relevant to a layer itself

(b) Cross-layer design allows only adjacent layers to exchange information with each other

(c) Cross-layer design provides control of lower layer functions to the upper layer functions

(d) Cross-layer design provides control of upper layer functions to the lower layer functions

I have been asked this question in an interview for internship.

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

Answer 1

The correct answer is (a) Cross-layer design allows non adjacent layers to exchange information which are traditionally relevant to a layer itself

Easy explanation: Cross-layer design allows non-adjacent layers to exchange information which is traditionally relevant to a layer itself. By adapting cross-layer design, a global view of the radio framework and the surrounding environment can be obtained. It helps to eliminate problems that arise due to a lack of resource information at the time of transmission.