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Method for assigning dynamic frequency spectrum of multiple radio system based on dynamic boundary of virtual frequency spectrum

A radio system and spectrum allocation technology, applied in the field of spectrum sharing, can solve the problems of insufficient spectrum utilization, complex fragmentation DSA control, etc., to achieve the effect of improving spectrum utilization, overcoming fragmentation DSA, and taking into account fairness

Inactive Publication Date: 2007-02-21
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0012] The disadvantage of this method is that due to the interference between different radio systems, the control of a fragmented DSA is more complicated than that of an adjacent DSA
In order to avoid interference between different systems, it is also necessary to add a large number of inter-system guard bands, and the spectrum utilization is still insufficient

Method used

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  • Method for assigning dynamic frequency spectrum of multiple radio system based on dynamic boundary of virtual frequency spectrum
  • Method for assigning dynamic frequency spectrum of multiple radio system based on dynamic boundary of virtual frequency spectrum
  • Method for assigning dynamic frequency spectrum of multiple radio system based on dynamic boundary of virtual frequency spectrum

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Embodiment Construction

[0063] Figure 4 , Figure 5 It is shown that a specific embodiment of the present invention is a dynamic spectrum allocation method for a multi-radio system based on a dynamic virtual spectrum boundary, which consists of the following steps:

[0064] (1) Determine the smallest spectrum block B for multiple radio systems m , each radio system RAN k , the authorized spectrum of k ∈ [1, K] is [f ak , f bk ], where f ak is the lower limit spectrum value of the licensed spectrum, f bk is the upper limit spectrum value of the licensed spectrum, and the licensed spectrum is divided into the smallest spectrum block B m divided into N k =B k / B m units, where B k = f bk -f ak is the width of the licensed spectrum; each radio system RAN k Set the virtual boundary V of the main system based on historical records and current traffic volume Dk , the boundary V Dk and the system lower limit spectrum value f ak The spectrum block in the main system private spectrum, the bound...

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Abstract

The method comprises: according to current traffic of each shared radio system, determining a host system and a firstly-selected rental system, and according to its traffic state, variably and dynamically adjusting the virtual boarder of the host system and the boarder of the firstly-selected rental system so as to dynamically set the private spectrum of the host system, the private spectrum of the firstly-selected rental system and the shared spectrum of the shared spectrum pool. The spectrum needs of the host system user are satisfied in its private spectrum, and its corresponding firstly-selected rental system also rents the spectrum block in the private spectrum of the firstly-selected rental system; between the private spectrum blocks in same there is no need to set the guard band so as to decrease the numbers of guard band and improve the spectrum utilization.

Description

Technical field [0001] The invention relates to a frequency spectrum sharing method of a multi-radio communication system, in particular to a dynamic frequency spectrum allocation method under the environment of frequency spectrum sharing of a multi-radio system. Background technique [0002] Aiming at the bottleneck problem of the increasingly serious shortage of wireless spectrum resources, it can be solved through reconfiguration strategies and technological innovations based on the radio system, so as to achieve efficient use of spectrum resources. The concept of spectrum sharing based on Software Defined Radio (SDR) was first proposed by J.Mitola. This technology makes it possible to allocate any spectrum at any time and anywhere. [0003] The traffic of the radio system is constantly changing with time and place. However, the spectrum of most current radio systems is allocated according to the traffic at the "peak time", so the spectrum resources in the non-"peak time"...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/36H04Q7/38H04B7/26H04W16/10
Inventor 葛迪范平志文展
Owner SOUTHWEST JIAOTONG UNIV
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