Dynamic spectrum management semi-physical simulation experiment system and method based on USRP

A dynamic spectrum management and hardware-in-the-loop simulation technology, applied in the field of electromagnetic spectrum management, can solve the problems of separation from the spectrum environment and frequency requirements, lack of convincing simulation effect, etc., to reduce time and cost, and promote the effect of dynamic spectrum management.

Inactive Publication Date: 2015-02-18
NAT UNIV OF DEFENSE TECH
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  • Description
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  • Application Information

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Problems solved by technology

However, the verification of these algorithms so far is limited to software simulation tools, which are separated from the

Method used

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  • Dynamic spectrum management semi-physical simulation experiment system and method based on USRP
  • Dynamic spectrum management semi-physical simulation experiment system and method based on USRP
  • Dynamic spectrum management semi-physical simulation experiment system and method based on USRP

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Embodiment Construction

[0022] The composition schematic diagram of the present invention is as figure 1 shown. Install the transmitting antenna, receiving antenna and RFX2400 daughter board on the USRP motherboard, as shown in figure 2 shown. After the computer is connected to the USRP and the antenna through USB 2.0, it can simulate the cognitive user and realize the dynamic spectrum access capability, such as image 3 shown.

[0023] Spectrum Management Center software such as Figure 4 As shown in , it includes the main interface, spectrum sensing sub-module, spectrum policy management sub-module, spectrum allocation sub-module and spectrum monitoring sub-module, etc.

[0024] The computer modulates the service data or control commands to be sent to obtain the baseband data stream, and transmits it to the USRP through USB2.0. The USRP processes the baseband data stream to obtain a radio frequency signal, and finally transmits it through the transmitting antenna.

[0025] USRP receives the r...

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Abstract

The invention relates to a dynamic spectrum management semi-physical simulation experiment system and method based on the USRP. The semi-physical simulation experiment system comprises a frequency spectrum management center, a dynamic frequency spectrum access network and cognition users, wherein each cognition user is composed of a computer, the USRP and an antenna. The method includes the steps that the cognition users send frequency utilization requests to the frequency spectrum management center, the frequency spectrum management center conducts frequency spectrum distribution according to local frequency spectrum resources and the frequency utilization condition, and the distribution result is sent to the cognition users through the USRP. By means of the system and the method, the dynamic frequency spectrum management can be achieved, idle frequency spectrums are effectively used, the frequency spectrum utilization rate is increased, the key sub-modules (algorithms) to which the dynamic frequency spectrum management is related can be verified, the time required for the development is shortened, cost required for the development are reduced, and a good promotion effect on the dynamic frequency spectrum management is achieved.

Description

a technical field [0001] The invention relates to a dynamic spectrum management experiment system, in particular to a USRP-based dynamic spectrum management semi-physical simulation experiment system and an experiment method. It belongs to the field of electromagnetic spectrum management. Two background technology [0002] With the deepening of the information industry revolution, wireless networks have become an important infrastructure in modern society, network traffic and the number of users are increasing rapidly, new wireless network technologies and services are emerging, and the most important resource that wireless communication relies on is spectrum. The current spectrum management adopts a fixed allocation mode: most of the frequency bands are used as authorized frequency bands, licenses are issued in these frequency bands (licenses include frequency bands, geographical locations, and allowed operating parameters, etc.) to authorized users, and these users are gra...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04B17/382
CPCH04W16/10
Inventor 陈勇曹龙邵震洪张建照赵杭生吴昊
Owner NAT UNIV OF DEFENSE TECH
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