Methods and apparatuses for spectrum sensing in an opportunistic band

A technology for sensing devices and opportunities, applied in wireless communication, access restrictions, electrical components, etc., can solve problems such as ineffective management of registration or master device access

Active Publication Date: 2013-09-04
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current sensing technologies do not effectively manage access to the opportunistic spectrum by registered or primary devices as well as unregistered or secondary devices

Method used

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  • Methods and apparatuses for spectrum sensing in an opportunistic band
  • Methods and apparatuses for spectrum sensing in an opportunistic band
  • Methods and apparatuses for spectrum sensing in an opportunistic band

Examples

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Embodiment Construction

[0026] Figure 1A is an illustration of an example communication system 100 in which one or more disclosed embodiments may be implemented. Communication system 100 may be a multiple access system that provides content, such as voice, data, video, messaging, broadcast, etc., to multiple wireless users. The communication system 100 can enable multiple wireless users to access these contents through the sharing of system resources (including wireless bandwidth). For example, communication system 100 may use one or more channel access methods such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), Single Carrier FDMA (SC-FDMA) and so on.

[0027] Such as Figure 1A As shown, communication system 100 may include wireless transmit / receive units (WTRUs) 102a, 102b, 102c, 102d, radio access network (RAN) 104, core network 106, public switched telephone network (PSTN) 108, Internet 110, and...

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PUM

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Abstract

A system, apparatuses and methods are provided for communicating in an opportunistic band. Channels that are reserved for primary users are used by sensing devices when primary users are not present. A geo-location database is configured to store occupancy information of a channel and information associated with the primary user of the channel. The database includes information such as the type of primary user, and the expected occupancy time of a channel by a primary user. Sensing devices are categorized into different classes based on their sensing capability. A device capabilities database stores device classification information associated with the sensing devices attached to a dynamic spectrum management system.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 413,726, filed November 15, 2010, the contents of which are hereby incorporated by reference. Background technique [0003] Local area wireless network systems such as 802.11 operate in a predefined frequency spectrum such as the Industrial, Scientific and Medical (ISM) band. The spectrum allowed by cellular licensed devices and devices operating as unlicensed devices does not change over time. 802.11 devices operate on contiguous spectrum channels. 802.11 devices operate on contiguous spectrum channels. [0004] In the United States, 408MHz of the spectrum from 54MHz to 806MHz can be allocated to televisions. Currently, 108MHz of this spectrum is being re-developed through auctions for commercial operations as well as for public safety applications. The remaining 300MHz of this primary radio spectrum remains dedicated to over-the-air television...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
CPCH04W16/14H04W88/02H04W48/16H04W72/02H04W24/00H04W72/56
Inventor M·弗雷达A·陶格
Owner INTERDIGITAL PATENT HLDG INC
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