The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 16, 2014

Filed:

Mar. 05, 2007
Applicants:

Phil A. Jamieson, Dorking, GB;

David M. Avery, Woking, GB;

Philip A. Rudland, Horley, GB;

Adam C. R. Sexton, Leeds, GB;

Inventors:

Phil A. Jamieson, Dorking, GB;

David M. Avery, Woking, GB;

Philip A. Rudland, Horley, GB;

Adam C. R. Sexton, Leeds, GB;

Assignee:

Koninklijke Philips N.V., Eindhoven, NL;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/173 (2006.01); H04L 12/703 (2013.01); H04L 12/701 (2013.01); H04W 72/02 (2009.01); H04L 12/26 (2006.01); H04W 48/08 (2009.01); H04W 72/08 (2009.01); H04W 72/04 (2009.01); H04W 76/02 (2009.01); H04W 24/00 (2009.01); H04W 28/04 (2009.01);
U.S. Cl.
CPC ...
H04L 45/00 (2013.01); H04L 45/28 (2013.01); H04W 48/08 (2013.01); H04W 72/085 (2013.01); H04W 72/02 (2013.01); H04L 43/0817 (2013.01); H04W 72/0406 (2013.01); H04W 76/02 (2013.01); H04W 24/00 (2013.01); H04W 28/04 (2013.01);
Abstract

In a wireless network, a device regularly communicates with at least one other node or device: generally this is its parent. If a problem with communication is detected, the device is preferably able to autonomously carry out a procedure to reacquire the network. In one embodiment, if a device is unable to communicate, it enters a temporary failsafe mode until that problem can be rectified. The device is suitably able to carry out a survey of local conditions in order to assist both it and the network to find a suitable alternative channel and, if a device is unable to immediately reconnect it broadcasts the result of its survey, the Network Environment Status (NES) message, in the hope that another device on the network will hear it. This Status message may then be used by the network to select an alternative channel.


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