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Scheduling and protection of quiet periods in a quiet zone for incumbent signal detection

A silent period and signal technology, applied in wireless communication, access restrictions, electrical components, etc., can solve the problems of lack of sensing equipment, inappropriateness, etc., and achieve the effect of reducing false alarms and improving reliability

Active Publication Date: 2012-01-25
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] Other existing MACs are reservation based which makes QP scheduling relatively easier
However, they are not suitable for use with contention-based IEEE 802.11 protocols, and they lack sufficient mechanisms to protect sensing devices from interference from neighboring auxiliary devices

Method used

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  • Scheduling and protection of quiet periods in a quiet zone for incumbent signal detection
  • Scheduling and protection of quiet periods in a quiet zone for incumbent signal detection
  • Scheduling and protection of quiet periods in a quiet zone for incumbent signal detection

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Embodiment Construction

[0023] It is important to note that the disclosed embodiments of the present invention are only examples of the many advantageous uses of the innovative teachings herein. In general, statements made in the specification of the present application do not necessarily limit any of the various claimed inventions. Furthermore, some statements may apply to some inventive features but not to others. In general, unless otherwise indicated, elements in the singular may be in the plural and vice versa without loss of generality. In the drawings, like numerals refer to like parts throughout the several views.

[0024] According to FCC rules, every device in a network expected to operate in the TV band should be able to reliably detect legacy TV and wireless microphone signals down to -114dBm. Given the existing IEEE 802.11 protocol, client devices cannot achieve reliable sensing due, among other reasons, to suffering interference from neighboring devices during the time that legacy sig...

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Abstract

A method and system for scheduling and protecting quiet periods (QP) in a quiet zone (105) for incumbent signal (121) detection in a wireless communications system. The communication system includes a plurality of wireless networks (103, 104), each of the plurality of wireless networks contains at least a master device (101, 401 ) and a client device (111, 411). In each of the plurality of wireless networks, the master device (101, 401) transmits a beacon (402) that contains a QP schedule (500) and a reservation of a time slot (405) for the client device (411 ). The client device (111, 411) transmits a request-to-quiet (RTQ) message (412) during the time slot, wherein the RTQ message (412) includes the client device's QP schedule information. The master and client devices within the quiet zone (105) keep quiet during scheduled quiet periods according to the QP schedule information contained in the received beacons and RTQ messages.

Description

technical field [0001] This application claims the benefit of US Provisional Application No. 61 / 156099, filed February 27, 2009. [0002] The present invention relates generally to devices in networks operating in the TV (television) band, and more particularly to a mechanism for providing a mechanism for silencing neighboring devices around a client device that is performing legacy signal detection in an IEEE802.11 based system methods and systems. Background technique [0003] The FCC (Federal Communications Commission) has recently approved rules for unlicensed use of the TV band. This TV band is suitable for propagation and can be widely used, especially in rural areas. This opens up huge opportunities for innovative services such as broadband Internet access, home multimedia distribution, mesh networking, smart metering, and building automation and control. [0004] Many widely adopted and deployed standards, including IEEE 802.11 and IEEE 802.15, are striving to exp...

Claims

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Application Information

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IPC IPC(8): H04W72/12
CPCH04W16/14H04W72/1289H04W72/23H04W48/08H04W72/0446H04W28/26
Inventor J.王V.R.加达姆
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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