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Resource utilization device and method of cognitive radio and cognitive radio system

A technology of cognitive radio and user perception, applied in the field of cognitive radio system, can solve problems such as the difficulty of decision-making of the perception base station, and achieve the effect of overcoming the influence of spectrum detection and reducing interference

Inactive Publication Date: 2013-06-05
FUJITSU LTD
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Problems solved by technology

The characteristics of this spectrum occupancy bring certain difficulties to the sensing base station to decide whether to use the subband

Method used

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  • Resource utilization device and method of cognitive radio and cognitive radio system
  • Resource utilization device and method of cognitive radio and cognitive radio system
  • Resource utilization device and method of cognitive radio and cognitive radio system

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Embodiment Construction

[0042] Various embodiments of the present invention will be described below in conjunction with the accompanying drawings. In the specification and drawings, specific embodiments of the present invention are specifically disclosed, which indicate some embodiments in which the principle of the present invention can be adopted. It should be understood that these embodiments are only exemplary and not limiting to the present invention. . On the contrary, the invention includes all modifications, variations and equivalents coming within the scope of the appended claims.

[0043] In the existing spectrum resource allocation strategy, the low-use-efficiency broadband spectrum is always divided into many subbands. If there is a spectrum hole, the spectrum hole will always appear in the form of a narrowband, and there will be no needle hole. Similarly, the occupied spectrum also appears in the form of narrowband, and there will be no wireless system that only uses non-continuous disc...

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Abstract

The invention provides a resource utilization device and method of cognitive radio and a cognitive radio system. The resource utilization device comprises a detection value receiver, an evaluation value calculator and a resource allocator, wherein the detection value receiver is used for receiving signal strength detection values transmitted by a plurality cognitive user devices; the evaluation value calculator respectively calculates the signal strength evaluation values of a plurality of sub-bands of the broadband signals according to the signal strength detection values transmitted by the plurality of cognitive user devices; and the resource allocator is used for performing resource allocation on the broadband spectrum according to the signal strength evaluation values of the plurality of sub-bands. By means of the resource utilization device and method and the cognitive radio system, allocation of spectrum resources on the basis of synergy broadband spectrum sensing can be performed, interference on authorized user equipment is reduced furthest, and influence on spectrum detection caused by frequency selective channel fading is overcome.

Description

technical field [0001] The present invention relates to a communication system, in particular to a cognitive radio resource utilization device and method and a cognitive radio system. Background technique [0002] With the advent of the information age and the widespread use of wireless devices, wireless spectrum has become an indispensable and precious resource in modern society. The allocation and utilization of wireless spectrum resources are usually regulated by radio regulations. At present, countries in the world generally adopt the principle of allocation based on static fixed frequency bands, which leads to the utilization of spectrum resources usually below 30%. It can be seen that the fixed spectrum allocation strategy cannot effectively utilize spectrum resources. [0003] In recent years, the communication industry has generally recognized that fixed frequency band allocation is a major reason for the increasing shortage of spectrum resources. In November 2002...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04W16/00H04B17/309H04B17/382
Inventor 李宏超张杰周华
Owner FUJITSU LTD
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