Device and method for detecting unused TV spectrum for wireless communication systems

A technology of wireless equipment and spectrum, applied to equipment and field for detecting unused TV spectrum in wireless communication system

Inactive Publication Date: 2012-07-18
WI LAN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to date no method or product has provided a satisfactory solution to the problem of identifying empty space fragments in a region of interest

Method used

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  • Device and method for detecting unused TV spectrum for wireless communication systems
  • Device and method for detecting unused TV spectrum for wireless communication systems
  • Device and method for detecting unused TV spectrum for wireless communication systems

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Embodiment Construction

[0042] In this specification, the term "primary service" is used for DTV broadcasting, wireless microphones and any application authorized (licensed) by regulation to use a designated part of the spectrum. The term "TV channel" refers to a channel currently defined by the DTV standard. For the illustrative embodiments used in this specification, without limitation, the specification refers to channels within the VHF and UHF bands as specified by the North American DTV standard. It should be noted that the present invention is equally applicable to other DTV broadcasting systems, such as European, Japanese and other DTV systems. The term "slice of spectrum" is used for a portion of the frequency spectrum, and the term "white space channel" is used for a logical channel formed by one or more slices of spectrum used by a white space device for each secondary service: it may consist of channels or A combination of channels (whether consecutive or not).

[0043] As indicated abov...

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PUM

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Abstract

TV white space spectrum sensors and methods for detecting and managing the white space are provided. The sensor is provided with a spectrum detector / analyzer, which senses and analyzes the wireless signals present in a spectrum of interest, identifies white space, and assigns the white space to secondary services. For reducing the white space detection time, the sensor uses a group detection method whereby multiple channels are sensed simultaneously. For reducing the sensor cost, the dynamic range of the sensor is reduced by operating the sensor in saturation for signals with the energy higher than a threshold. The sensor is also provided with a spectrum manager / planner capable of understanding a plurality of air interface standards, reserving and providing the right amount of white space spectrum to each application, based on the respective standard requirements. The particular architectures used by the sensor result in an affordable addition to any wireless device.

Description

[0001] related application [0002] This application is related to co-pending U.S. Patent Application No. SN12 / 078,979, entitled "System and Method for Utilizing Spectral Resources in Wireless Communications," filed April 9, 2008, which is hereby incorporated by reference into this article. technical field [0003] The present application generally relates to the detection of white space and the use of the detected white space for data communication. Background technique [0004] Many countries have various regulatory agencies aimed at providing centralized, tightly controlled allocation of spectrum resources for specific uses and, in most cases, licensing rights to use portions of the spectrum. Accordingly, these regulatory agencies have the authority to allocate unused portions of the spectrum (never chartered for use) or to reallocate any spectrum that becomes available as a result of technological changes. In many cases, for technical reasons, such as to avoid interfer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W24/00H04W28/20
CPCH04W16/14H04B1/1027H04L27/0006H04W16/02
Inventor S·吴J·叶
Owner WI LAN INC
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