Multi-node combination spectrum sensing method and system

A spectrum sensing, multi-node technology, applied in transmission systems, transmission monitoring, network planning, etc., can solve problems such as loss of sensing results and prediction results, reduce signaling overhead, reduce service interruption rate, and increase service volume. Effect

Active Publication Date: 2013-01-02
南通红梅乳业有限公司
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Problems solved by technology

[0004] In view of this, the main purpose of the present invention is to provide a multi-node joint spectrum sensing method and system, which solves the possible problems caused by each sensing node not only sending sensing results but also predicting results to high-level nodes when the network is abnormal. The problem of loss of perceived results and predicted results

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  • Multi-node combination spectrum sensing method and system
  • Multi-node combination spectrum sensing method and system

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Embodiment Construction

[0030] The basic idea of ​​the present invention is: the secondary wireless communication system senses according to the sensing period indicated by the high-level node; the high-level node receives the sensing measurement result of the secondary wireless communication system, evaluates the channel occupancy, and obtains the sensing result and the prediction result.

[0031] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0032] figure 1 It is a schematic flow chart of a multi-node joint spectrum sensing method in the present invention, such as figure 1 As shown, the method includes the following steps:

[0033] Step 101, the secondary wireless communication system performs sensing according to the sensing cycle indicated by the high-level node;

[0034] Specifically, the secondary wireless communication system includes at least secondary base stations and secondary us...

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Abstract

The invention discloses a multi-node combination spectrum sensing method. The method comprises the following steps that: a secondary wireless communication system carries out sensing according to a sending period indicated by an upper-level node; the upper-level node receives the sensing measurement result of the secondary wireless communication system and evaluates channel occupying conditions to obtain a sensing result and a prediction result. The invention further discloses a multi-node combination spectrum sensing system. Through the method and the system, the secondary wireless communication system is more accurately accessed to a frequency spectrum so that the service interruption rate is reduced. Moreover, the signaling overhead between the secondary wireless communication system and the upper-level node is reduced. Furthermore, the upper-level node further can carry out optimization and adjustment on the sensing period according to predicted available time so that the secondary wireless communication system has longer time to carry out data transmission so as to increase the service amount of the secondary wireless communication system.

Description

technical field [0001] The present invention relates to spectrum sensing technology in cognitive radio, in particular to a multi-node joint spectrum sensing method and system. Background technique [0002] The core idea of ​​cognitive radio (Cognitive Radio, CR) is that it has the ability to learn and exchange information with the surrounding environment, so as to perceive and utilize the available spectrum of the surrounding environment, and limit and reduce the occurrence of conflicts. Therefore, spectrum sensing and access technology is the most basic research field in CR networks, and its goal is to realize optimal discovery and accurate and fast access of spectrum resources. However, the time delay existing in the existing cognitive radio hardware platform will cause the lag of the spectrum sensing result, that is, the sensing result used by the secondary user is not the channel state at the current moment, but the channel state some time ago. In order to solve this pr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00
CPCH04B1/00H04B17/00H04W16/14
Inventor 李岩贾媛媛黄清谈振辉徐少毅刘星
Owner 南通红梅乳业有限公司
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