Safety cognitive radio network power distribution method capable of ensuring time delay QoS requirement

A security awareness, radio technology, applied in wireless communication, power management, network planning, etc., can solve problems that have not been discussed before

Active Publication Date: 2015-06-10
SHANDONG UNIV
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  • Abstract
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Problems solved by technology

However, the existing literature has not discussed how to balance sy

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  • Safety cognitive radio network power distribution method capable of ensuring time delay QoS requirement
  • Safety cognitive radio network power distribution method capable of ensuring time delay QoS requirement
  • Safety cognitive radio network power distribution method capable of ensuring time delay QoS requirement

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Embodiment

[0044] Examples of the present invention figure 1 As shown, a secure cognitive radio network power allocation method that guarantees the delay QoS requirement is implemented by the following communication system, which includes a secondary user transmitting end, a secondary user receiving end, a primary user receiving end, and an eavesdropping end The communication mechanism is the spectrum sharing mode of the cognitive radio network, that is, the secondary user transmitter sends a signal to the secondary user receiver, and the eavesdropping terminal eavesdrops on the signal during this process, and the signal transmitted by the secondary user transmitter It will cause certain power interference to the receiving end of the main users. Under the limitation of the average transmit power and the average / peak interference power, the physical layer performs dynamic power allocation according to the change of the channel state and the QoS requirements of the upper layer users, so tha...

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Abstract

The invention provides a safety cognitive radio network power distribution method capable of ensuring time delay QoS requirement, and belongs to the technical field of wireless communication. The method is that the safety cognitive radio network with a side channel is used as a system model, and a spectrum-sharing mode of the cognitive radio network is used as a communication mechanism, the optimal problem of maximizing the effective safety capacity under the limitation of the emission power and the interference power is planned on the basis of a safe and effective capacity cross-layer model; the optimal antithesis factors are obtained through the lagrangian duality theory, so as to obtain the optimal emission power, and the optimal power distribution can be achieved. With the adoption of the method, the safety cognitive radio network meets the requirement of the upper layer user service quality (time delay QoS), and the optimal system safety performance and efficient utilization of the physical layer resource are achieved; the system is of important theoretical significance and practical significance.

Description

technical field [0001] The invention relates to a safety cognitive radio network power allocation method that guarantees time delay QoS requirements, and belongs to the technical field of wireless communication. Background technique [0002] For wireless communication networks, spectrum resources are precious and limited resources. However, with the development of wireless communication technology, the demand for spectrum resources is also increasing. The existing fixed spectrum allocation strategy is becoming more and more inapplicable. In order to improve spectrum utilization and alleviate spectrum demand, the concept of cognitive radio came into being. Cognitive radio networks support different coexistence modes to achieve spectrum sharing. One of them is the spectrum sharing mode. Specifically, cognitive radio networks allow secondary users and primary users to use the same frequency band at the same time, but the secondary user transmitter needs to adjust the transmissi...

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Application Information

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IPC IPC(8): H04W16/14H04W52/34
CPCH04W16/14H04W52/34H04W52/346
Inventor 马丕明马柳青马艳波
Owner SHANDONG UNIV
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