Which among the following is not a design methodology in the implementation of cross-layer design?(a) Exchange of information among several layers during run time(b) Storage of information in different storage structures(c) Construction of mutual database with easy access for each layer in the protocol stack(d) Construction of channel models to estimate the propagation of a signal in the channel environmentThe question was asked by my college director while I was bunking the class.My question is from Next Generation Wireless Network in section Next Generation Wireless Network of Cognitive Radio

Which among the following is not a design methodology in the implement

1.	Which among the following is not a design methodology in the implementation of cross-layer design?(a) Exchange of information among several layers during run time(b) Storage of information in different storage structures(c) Construction of mutual database with easy access for each layer in the protocol stack(d) Construction of channel models to estimate the propagation of a signal in the channel environmentThe question was asked by my college director while I was bunking the class.My question is from Next Generation Wireless Network in section Next Generation Wireless Network of Cognitive Radio
Answer» Right option is (d) Construction of channel models to estimate the propagation of a SIGNAL in the channel environment The BEST I can explain: Cross-layer design requires the characteristic parameters of each layer to be made available to other layers of the protocol STACK during run time. In order to achieve this, DIFFERENT degree of abstraction is required. This requires the development of new data structures such as constructing squares for storing information.

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