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Interference processing method and system in a cognitive radio system

A cognitive radio and processing method technology, applied in wireless communication, electrical components, network planning, etc., can solve problems such as mutual interference, unfair users, and adverse effects on system performance, and achieve the effect of improving system performance

Active Publication Date: 2017-06-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For the CR system connected in the second way, directly occupying a certain frequency band without any measurement will obviously lead to mutual interference.
If the original system (that is, the system that has already occupied this frequency band) abandons the use of this frequency band, it is unfair to the users in the original system. to bad effects

Method used

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  • Interference processing method and system in a cognitive radio system
  • Interference processing method and system in a cognitive radio system
  • Interference processing method and system in a cognitive radio system

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Embodiment 1

[0038] Embodiment 1 of the present invention provides an interference processing method in a cognitive radio system. In this embodiment of the present invention, it is assumed that a system that has already occupied a certain frequency point (that is, a channel) is the disturbed system, and this frequency point is the work of the disturbed system. frequency point, another system accessing this frequency point is the interference system. Among them, when the disturbed system works (that is, works stably) at the working frequency point (such as frequency point f1), the disturbing system will not detect the interference on the working frequency point of the disturbed system, it will Start working at the frequency point; such as figure 1 As shown, the method includes the following steps:

[0039] Step 101, when the disturbed system is working at the working frequency point, periodically detect the interference situation of the disturbed system at the working frequency point, and ...

Embodiment 2

[0071] The first embodiment above is the processing of the disturbed system. When the disturbed system is working at the working frequency, the disturbing system will start working at the working frequency without performing interference detection on the working frequency of the disturbed system. Based on this, Embodiment 2 of the present invention provides an interference processing method in a cognitive radio system to describe the processing of the interference system, as follows figure 2 As shown, the method includes the following steps:

[0072] Step 201, the interfering system occupies the channel of the working frequency point and works on the working frequency point without performing interference detection on the working frequency point of the disturbed system.

[0073] Step 202, the interference system detects whether the interference system has received a warning sequence at the working frequency point (the warning sequence is used to notify the interference system...

Embodiment 3

[0093] In the above application scenarios, the processing mechanism of CRS1 (disturbed system) is as follows:

[0094] Corresponding to the above step 101, when CRS1 is working on the working frequency point f1, periodically detect the interference situation of CRS1 on the working frequency point f1, and obtain the signal power information of multiple sampling points in one or more detection periods; assuming detection The period is T1, and in each detection period, there are n1 sampling points on f1; after that, CRS1 obtains the energy average value of the first interference sample by smoothing the signal power information of multiple sampling points.

[0095] Specifically, CRS1 uses the following formula to smooth n1 sampling points to obtain the average energy value of the first interference sample on f1: Among them, when only the signal power information of the sampling point in one detection period is selected, then N=1, and the above formula is simplified as P j is t...

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Abstract

The invention discloses an interference processing method and system in a cognitive radio system. The method comprises: when a disturbed system works over a work frequency point, periodically detecting the interference situation of the disturbed system on the work frequency point, and obtaining a first interference sample energy mean value; the disturbed system comparing the first interference sample energy mean value and a preset interference threshold; when the first interference sample energy mean value is smaller than the preset first interference threshold, the disturbed system determining that the disturbed system continues working over the work frequency point; and when the first interference sample energy mean value is not smaller than the preset first interference threshold, the disturbed system adjusting the emission parameters of the disturbed system and sending a warning sequence to an interference system, the warning sequence being used to notify the interference system of withdrawing from the work frequency point. According to the embodiments of the invention, users in the disturbed system can be prevented from innocently performing frequency spectrum switching, and the performance of the disturbed system is improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to an interference processing method and system in a cognitive radio system. Background technique [0002] Radio communication spectrum is a precious natural resource. With the rapid development of wireless communication technology, the problem of poor spectrum resources is becoming more and more serious. In order to alleviate the shortage of spectrum resources, the current wireless communication spectrum is monitored and researched, and some frequency bands ( For example, the TV frequency band) is not used in most of the time or in most regions, and some frequency bands have multi-system and multi-user competition at the same time, that is, some systems with a large business load do not have enough spectrum resources , and other systems with a small business load take up too many resources. The concept of CR (Cognitive Radio, Cognitive Radio) was born under th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W24/00
Inventor 李媛媛蒋成钢白文岭杨宇胡金玲
Owner DATANG MOBILE COMM EQUIP CO LTD