A secure and energy-efficient method for cognitive d2d communication
A communication method and energy-efficient technology, applied in the field of cognitive D2D communication, can solve the problems of lack of applicability in ultra-dense cellular networks, difficulty in ensuring interference-free spectrum sharing and secure communication, etc.
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[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0051] A safe and energy-efficient cognitive D2D communication method, specifically comprising the following steps:
[0052] Step 1: The small cell base station SCBS and the cognitive user CU perform channel quality assessment respectively, determine the channel power gain between each link, and aggregate them to the small cell base station SCBS;
[0053] Step 2: Small cell base station SCBS establishes a joint resource allocation model about wireless charging power and wireless charging power time;
[0054] Step 3: The small cell base station SCBS uses an iterative optimization algorithm to calculate the optimal wireless charging power and optimal wireless charging time, and broadcast to the cognitive user CU;
[0055] Step 4: The small cell base station SCBS transmits radio frequency signals with the optimal wireless charging power; at the ...
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