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Methods and system for efficient self-coexistence of wireless regional area networks

A self-coexistence window and common channel technology, applied in wireless communication, network planning, network traffic/resource management, etc., can solve the problems of no reliable mechanism for SCW scheduling, instability, and QP scheduling is not allowed to be adjusted

Active Publication Date: 2013-03-20
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Since the scheduling of intra QP is defined in IEEE 802.22, no reliable mechanism for scheduling of SCW is disclosed in the related art
Additionally, current solutions for scheduling QPs do not allow tuning QP scheduling, for example to reduce QP duration or QP frequency, without causing instability

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  • Methods and system for efficient self-coexistence of wireless regional area networks
  • Methods and system for efficient self-coexistence of wireless regional area networks
  • Methods and system for efficient self-coexistence of wireless regional area networks

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Embodiment Construction

[0022] It is important to point out that the disclosed embodiments of the invention are only examples of the many advantageous uses of the innovative teachings herein. In general, statements made in the specification of this application do not necessarily limit any of the various claimed inventions. Furthermore, certain statements may apply to some inventive features but not to others. In general, unless otherwise indicated, a singular element may be plural or vice versa without loss of generality. In the figures, like numerals refer to like parts throughout the several views.

[0023] Various embodiments of the invention include methods for scheduling contention-based SCWs and reservation-based SCWs. As mentioned above, the SCW is part of a frame, and it may be included in some frames of a superframe. In contention based scheduling, SCW is shared by neighbor WRANs. In reservation based scheduling, the WRAN that reserves the SCW has exclusive access to the reserved SCW.

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Abstract

A method (400) for scheduling self coexistence windows (SCWs), wherein SCWs are part of frames transmitted in wireless regional area networks (WRANs) sharing a common channel, comprises monitoring the common channel for a duration of at least a maximum SCW cycle length (S410); checking if at least one coexistence beacon protocol (CBP) packet (300) including at least one of SCWs and quiet periods (QPs) scheduled by neighbor WRANs is detected on the common channel (S420); and establishing a SCW schedule by setting SCW schedule fields in a modified superframe control header (SCH) (700), wherein the newly established SCW schedule does not conflict with any already scheduled SCWs and QPs (S440).

Description

technical field [0001] The present invention relates generally to wireless regional area networks. Background technique [0002] Wireless Area Networks (WRANs) (as defined by the IEEE 802.22 working group) are targeted to use cognitive radio technology. This would allow geographically unused spectrum allocated to TV broadcasting services to be shared on a non-interference basis to bring broadband access to hard-to-reach areas. WRANs are designed to operate on the TV broadcast band while ensuring that no harmful interference is caused to existing operations—ie, TV broadcasts and low-power licensed devices (eg, wireless microphones). [0003] figure 1 An exemplary IEEE 802.22-based system 100 comprising two WRANs 110 and 120 is illustrated. The base stations ( BS1 and BS2 ) can communicate with each other over a wide area network (WAN) 130 . Customer Premises Equipment (CPE) in a WRAN can communicate with its base station as well as with CPEs in neighboring WRANs. For exa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W72/12
CPCH04W16/14H04W74/02H04W28/26H04W74/002
Inventor J.王
Owner KONINKLIJKE PHILIPS ELECTRONICS NV