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Apparatus and method for enquiring channel condition information in cognitive radio wireless communication system

A wireless communication system and cognitive radio technology, applied in the field of devices for querying available channel information, can solve problems such as inability to ensure the correct identification of channels, performance degradation of wireless communication systems, etc.

Inactive Publication Date: 2011-04-13
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, spectrum sensing functionality does not guarantee correct identification of whether a channel is being used by a licensed system
Furthermore, long time signal detection and processing has to be performed to perform spectrum sensing, which may cause performance degradation of CR-based wireless communication systems

Method used

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  • Apparatus and method for enquiring channel condition information in cognitive radio wireless communication system

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Embodiment Construction

[0032] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present invention defined by the claims and their equivalents. It includes various details to aid in understanding, however these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0033] The terms and words used in the following specification and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following description of exemplary embodiment...

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Abstract

A method of operating a Data Base (DB) server for storing spectrum condition information on a licensed system in a Cognitive Radio (CR)-based wireless communication system and a CR-based wireless communication system are provided. The method includes determining changes in the spectrum condition information on the licensed system, recalculating maximum Equivalent Isotropically Radiated Power (EIRP) allowed for each channel of CR-based devices registered in a list, and transmitting information regarding the recalculated maximum allowed EIRP.

Description

technical field [0001] The present invention relates to a cognitive radio (CR) based wireless communication system. More specifically, the present invention relates to an apparatus and method for querying available channel information in a CR-based wireless communication system. Background technique [0002] As the wireless communication system advances, it is expected that the wireless communication system provides various types of services. In addition, high-speed wireless data transmission technology is required to provide various services with good quality in a reliable manner. Although various systems and schemes have been proposed for high-speed wireless data transmission technologies, research on high-speed data transmission technologies has been ongoing to transmit data in a faster and less costly manner. Wireless communication systems require additional frequency bands to support coexistence with legacy technologies. However, frequency resources are limited, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04W52/18
CPCH04W72/0406H04W16/14H04W72/0473H04W52/367H04W72/04H04W72/20H04W76/30H04W60/00
Inventor 单成林恩泽禹政秀李根镐金相范朴用浩
Owner SAMSUNG ELECTRONICS CO LTD
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