Question

Which among the following layers have a similar impact due to interference caused by primary user transmission?

a.

Physical layer and MAC layer

b.

MAC layer and network layer

c.

Network layer and Transport layer

d.

Transport layer and Physical layer

Posted under Cognitive Radio

Answer: (c).Network layer and Transport layer Explanation:The effect of primary user transmission on the MAC layer and network layer is complete and irreversible blockage of a packet. It can be mitigated by retransmitting acknowledgments in the MAC layer. It can be mitigated in the network layer by selecting protocol with effective packet restoration mechanisms.

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Q. Which among the following layers have a similar impact due to interference caused by primary user transmission?

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