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Energy-saving spectrum sensing realization method based on clustering

A spectrum sensing and cluster head node technology, applied in the field of energy-saving spectrum sensing implementation based on clustering, can solve problems such as high energy, consumption, and multiple communication overhead, and achieve the effect of ensuring sensing performance and reducing energy consumption

Inactive Publication Date: 2018-09-18
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, problems such as multipath fading and interference in the wireless channel and the calculation and decision ability of a single sensing node will affect the performance of spectrum sensing
The existing technology improves the effect of spectrum sensing through multi-user cooperation. Each sensing node achieves the same judgment result by exchanging spectrum sensing information multiple times. Although the performance of spectrum sensing is improved, more communication overhead is generated and the consumption is relatively large. High energy, increasing the time and complexity of spectrum sensing

Method used

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  • Energy-saving spectrum sensing realization method based on clustering
  • Energy-saving spectrum sensing realization method based on clustering
  • Energy-saving spectrum sensing realization method based on clustering

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Embodiment Construction

[0012] like figure 1 As shown, this embodiment specifically includes the following stages:

[0013] In the first stage, the expression of the total energy consumption of the network is obtained, the number of clusters k is derived, and the optimal number of clusters k that minimizes the total energy consumption of the network is calculated. opt :

[0014] The total network energy consumption is divided into intra-cluster energy consumption and inter-cluster energy consumption, and intra-cluster energy consumption includes intra-cluster communication energy consumption and spectrum sensing total energy consumption.

[0015] Since all cluster members in the cluster are within the communication coverage of the cluster head, and the distance within the cluster is short, it is suitable to obey the Friis free space model of power loss, i.e. cluster members at distance d i The energy dissipated to the cluster head when transmitting B-bit information packets where: d i is the E...

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Abstract

The invention discloses an energy-saving spectrum sensing realization method based on clustering. The method comprises the following steps: obtaining the optimal cluster number with minimum network total energy consumption through assessment calculation, taking a node with high energy value in the network as a cluster head, adding the neighbor node in the cluster as the cluster member; selecting the node number with the optimal participator cooperative sensing for each cluster by a base station, and selecting the corresponding sensing node by the cluster head; and finally performing data integration after receiving a spectrum sensing result from the sensing node through the cluster node, and broadcasting an available channel. Through the realization method disclosed by the invention, the unnecessary energy consumption can be reduced, the energy efficiency of a cognitive sensing network is improved, and the life cycle of the network is prolonged.

Description

technical field [0001] The invention relates to a technology in the field of wireless communication, in particular to an energy-saving spectrum sensing implementation method based on clustering, which reduces the total energy consumption of network sensing and communication by optimizing the number of clusters and the number of nodes participating in cooperative sensing. Background technique [0002] In the cognitive sensor network, as the secondary user, the cognitive sensor can switch to the appropriate channel for information transmission through spectrum sensing, monitor the channel of the primary user, and discover some unoccupied licensed frequency bands. However, problems such as multipath fading and interference in the wireless channel and the calculation and decision ability of a single sensing node will affect the performance of spectrum sensing. In the prior art, the effect of spectrum sensing is improved by means of multi-user cooperation. Each sensing node excha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/382H04W52/02
CPCH04B17/382H04W52/0209Y02D30/70
Inventor 齐开悦李超过敏意
Owner SHANGHAI JIAO TONG UNIV
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