Optimization method of dcss-ocr opportunistic cognitive routing protocol

A technology of routing protocol and optimization method, applied in the field of cognitive radio

Active Publication Date: 2021-02-12
CHANGZHOU INST OF TECH
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Problems solved by technology

[0009] Due to different routing metrics, different optimal paths will be generated. Some current research results still have certain limitations or shortcomings, and further expansion or in-depth research is still needed.

Method used

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  • Optimization method of dcss-ocr opportunistic cognitive routing protocol
  • Optimization method of dcss-ocr opportunistic cognitive routing protocol
  • Optimization method of dcss-ocr opportunistic cognitive routing protocol

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Embodiment Construction

[0055] Aiming at the technical challenges mentioned above, the multi-channel multi-hop routing discovery and selection strategy is deeply studied, and the spectrum sensing technology of the physical layer (PHY) and the scheduling mechanism of the media access control sublayer (MAC) are closely integrated into the routing decision-making of the network layer. In this paper, a decision algorithm based on Dual Collaborative Spectrum Sensing Opportunistic Cognitive Routing (DCSS-OCR) is proposed to improve the chance of route discovery and establishment in dynamic spectrum environment and enhance the stability of routing path performance and reliability. That is to say, firstly, considering spectrum sensing and link availability factors, a routing discovery model based on DCSS spectrum sensing theory is constructed to establish an effective routing for cognitive wireless Ad hoc networks; secondly, considering the existence of routing diversity, a shortest The path selects the next...

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Abstract

A DCSS-OCR opportunistic cognitive routing protocol optimization method, firstly, a global optimization scheme is proposed for the expected link access opportunity and average transmission delay measurement in the DCSS-OCR opportunistic cognitive routing protocol, so as to realize heterogeneous cognitive network Optimal routing quality and stability. Secondly, the correctness of the expressions of link access opportunity and average transmission delay is verified through Monte Carlo experimental simulation and theoretical numerical analysis. Finally, through multi-dimensional parameter joint optimization settings, simulation and numerical analysis are performed to analyze the influence of primary user activity on routing links and path access opportunities, as well as average transmission delay.

Description

technical field [0001] The invention relates to the technical field of cognitive radio, in particular to a method for optimizing a DCSS-OCR opportunistic cognitive routing protocol. Background technique [0002] The routing of Cognitive Wireless Ad hoc Networks (CRAHNs) faces many challenges. Since the main user activities dynamically change the topology of the network and the available spectrum opportunities, the cognitive nodes have to adaptively adjust the communication frequency and available channels to select the appropriate routing path. Facing these challenges, traditional routing metrics such as throughput, delay, and energy efficiency, which measure routing quality, cannot meet the needs of routing decisions. In order to get a practical and efficient routing, not only traditional routing metrics, but also some new routing metrics that can take path stability / PUs activity and spectrum utilization into account are needed to jointly capture spectral information to bu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W40/02
CPCH04W24/02H04W40/02
Inventor 崔翠梅汪一鸣金石吴澄
Owner CHANGZHOU INST OF TECH
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