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System and method for detecting frequency spectrums based on dynamic time-slot division

A technology of spectrum detection and dynamic time slot, applied in electrical components, wireless communication, etc., can solve the problems of poor practicability and achieve the effect of maximizing performance and strong practicability

Active Publication Date: 2012-08-15
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method involves detection time slot division, but it guarantees the maximum performance of the system, and its practicability is poor

Method used

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  • System and method for detecting frequency spectrums based on dynamic time-slot division
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  • System and method for detecting frequency spectrums based on dynamic time-slot division

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Embodiment Construction

[0025] The spectrum detection system and method based on dynamic time slot division proposed by the present invention are described in detail as follows in conjunction with the drawings and embodiments.

[0026] like figure 1 As shown, a spectrum detection system based on dynamic time slot division according to an embodiment of the present invention includes a cognitive terminal and a cognitive base station. in:

[0027] The cognitive terminal has the functions of spectrum detection and data transmission: according to the detection time slot division strategy formulated by the cognitive base station, spectrum detection is performed in the detection time slot, and the detected sensing data is uploaded to the cognitive base station for data analysis and judgment etc.; in the transmission time slot, the cognitive terminal performs data transmission under the guidance of the access network information sent by the cognitive base station.

[0028] Cognitive base stations control t...

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Abstract

The invention discloses a system and a method for detecting frequency spectrums based on dynamic time-slot division, which relate to the technical field of wireless communication. The system comprises a cognitive base station and cognitive terminals, wherein the cognitive base station is used for formulating detection time-slot division strategies according to requirements for changing detection time-slot divisions dynamically and sending the detection time-slot division strategies to the cognitive terminals, the cognitive terminals are used for performing frequency spectrum detection at detection time-slots according to the detection time-slot division strategies and sending perceived data to the cognitive base station. Division of detection time-slots is dynamically changed according to changes of system parameters or changes of wireless environment, so that performance maximization of the system can be guaranteed, and practicability of the system is high.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a spectrum detection system and method based on dynamic time slot division. Background technique [0002] With the development of wireless communication technology, people's demand for spectrum resources is increasing, and the phenomenon of "spectrum exhaustion" is becoming more and more obvious. In order to alleviate the contradiction between the lack of spectrum resources and the increasing demand for wireless services, cognitive radio (Cognitive Radio, CR) technology has received extensive attention as an intelligent spectrum sharing technology. Relevant working groups (such as 802.22, 802.16) of the Institute of Electrical and Electronics Engineers (IEEE) and the International Telecommunication Union (ITU) have formulated or are actively formulating a series of standards to promote the development of this technology in various application scenarios. [0003] I...

Claims

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Application Information

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IPC IPC(8): H04W24/08
Inventor 冯志勇张平彭立军刘尚李晓帆王颖
Owner BEIJING UNIV OF POSTS & TELECOMM