Unlock instant, AI-driven research and patent intelligence for your innovation.

Collaborative spectrum perception method based on credibility in mobile scene

A technology for cooperative spectrum sensing and mobile scenarios, applied in the field of cognitive radio cooperative spectrum sensing

Active Publication Date: 2014-12-10
HARBIN INST OF TECH
View PDF6 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the following problems of the existing spectrum sensing method:

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Collaborative spectrum perception method based on credibility in mobile scene
  • Collaborative spectrum perception method based on credibility in mobile scene
  • Collaborative spectrum perception method based on credibility in mobile scene

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0067] Specific implementation mode 1. Combination Figure 1 to Figure 9 To illustrate this specific implementation mode, since the receiving channel conditions corresponding to each point in the entire research area are quite different, the actual detection results of users at different locations are also quite different. The traditional trust-based collaborative sensing algorithm eliminates malicious users in the system by judging that users whose uploaded detection results differ greatly from the uploaded results of most users in the system are malicious users. Therefore, such traditional algorithms cannot accurately distinguish authentic users from malicious users in mobile scenarios.

[0068] In view of this contradiction, we divide the entire research area into several small cells, so that each point in each cell has similar channel conditions and similar actual detection energy values. Then this problem can be avoided by independently looking for users whose detection ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a collaborative spectrum perception method based on credibility in a mobile scene, relates to the technical field of information and communication and aims to solve the problem that malicious user attacks probably exist in the network of the mobile scene of cognitive users. The method comprises the following steps: through the adoption of the concept of the credibility, firstly, the whole trial zone is partitioned into a plurality of small cells; then detection results uploaded by all the cognitive users are compared in each cell, the credibility of the cognitive users are independently updated so as to serve as references to reject malicious users and weight coefficient of each cell is calculated; through the simulation verification, the situation that the method provided by the invention can obtain favorable system detection property can be realized. In the network with 50 cognitive users, among whom 15 are malicious users, when the false alarm probability of the system is 0.1, the system detection probability obtained through the adoption of the collaborative spectrum perception method is 0.99. Specific to the scene that the cognitive users are mobile and major users are static, the collaborative spectrum perception method is used for overcoming the malicious attacks launched by the malicious users in the system.

Description

technical field [0001] The invention relates to the field of information and communication technologies, in particular to a cognitive radio cooperative spectrum sensing method. Background technique [0002] Cognitive radio is an effective technology that can be used to improve the utilization of spectrum resources. It can solve the problems of spectrum resource shortage and low spectrum utilization rate in current wireless communication through dynamic spectrum access technology. Cognitive radio was first proposed by Mitola. The basic idea is: the cognitive user accesses the licensed user frequency band or the unlicensed user frequency band in an opportunistic way to improve spectrum utilization. But only if it does not cause harmful interference to licensed or unlicensed users who own the spectrum. Therefore, spectrum sensing is the foundation and premise of cognitive radio. [0003] Currently, single-user spectrum sensing technologies mainly include energy detection, m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00
Inventor 贾敏王欣玉郭庆顾学迈王雪张光宇王世龙
Owner HARBIN INST OF TECH