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Interference suppression method and device in case of spectrum sharing between different systems

A Spectrum Sharing and Interference Suppression Technology

Active Publication Date: 2015-08-12
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Embodiments of the present invention provide an interference suppression method and device in the case of spectrum sharing between different systems, and solve the problem that the existing power control and user scheduling strategies cannot reduce the mutual interference between the cognitive system and the authorized system

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  • Interference suppression method and device in case of spectrum sharing between different systems
  • Interference suppression method and device in case of spectrum sharing between different systems
  • Interference suppression method and device in case of spectrum sharing between different systems

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Embodiment Construction

[0028] As mentioned in the background, with the rapid development of mobile communication services, telecom operators will face the problem of scarce spectrum resources. However, the spectrum usage of different RATs in the wireless communication frequency band changes with time and region, which leads to greater demand for spectrum of some RATs in certain areas at certain times, while some RATs in the same area are relatively idle at this time.

[0029] The fixed spectrum allocation policy is unlikely to change in the short term, and the spectrum sharing between RATs can be realized through cognitive radio technology to improve spectrum utilization.

[0030] The first principle of cognitive radio is the protection of licensed systems, that is, cognitive radio should use idle spectrum resources without interfering with licensed systems on idle spectrum, and licensed systems include licensed systems in idle spectrum areas and adjacent areas of idle spectrum. Licensed system, the...

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Abstract

Disclosed are an interference suppression method and device for inter-system frequency spectrum sharing. Through application of the technical solution of embodiments of the present invention, maximum downlink transmission power and / or maximum uplink transmission power of a cognitive cell on a cognitive frequency band is limited, which can effectively reduce interference between a cognitive system and an authoring system, comprising interference of the authoring system on a downlink of the cognitive system and interference of the cognitive system on an uplink and a downlink of the authoring system, in the case that the two systems share a frequency spectrum, so that the cognitive system uses idle frequency spectrum resources of the authoring system in the case of noninterference / low interference, thereby increasing the utilization of the frequency spectrum and improving link quality.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an interference suppression method and equipment in the case of spectrum sharing among different systems. Background technique [0002] With the rapid development of the mobile communication industry, the contradiction between the growing demand for broadband wireless communication and the limited spectrum resources is becoming more and more obvious. Although OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing, Multiplexing technology), MIMO (Multiple-Input Multiple-Out-put, Multiple Input Multiple Output) and other technologies to improve spectrum utilization, but these cannot fundamentally solve the problem of limited spectrum resources. [0003] The spectrum usage of different wireless access systems in the IMT (International Mobile Telecommunication) frequency band changes with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14
CPCH04W52/143H04W16/14H04W52/367H04W52/146H04W52/244
Inventor 蒋成钢李媛媛白文岭杨宇
Owner DATANG MOBILE COMM EQUIP CO LTD