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:
Jan. 27, 2015

Filed:

Sep. 12, 2008
Applicants:

Chun-ting Chou, Taipei, TW;

Richard Chen, Croton-On-Hudson, NY (US);

Inventors:

Chun-Ting Chou, Taipei, TW;

Richard Chen, Croton-On-Hudson, NY (US);

Assignee:

Koninklijke Philips N.V., Eindhoven, NL;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); H04W 56/00 (2009.01); H04W 76/04 (2009.01); H04W 84/18 (2009.01); H04W 52/02 (2009.01);
U.S. Cl.
CPC ...
H04W 56/002 (2013.01); H04W 76/046 (2013.01); H04W 84/18 (2013.01); H04W 52/0216 (2013.01);
Abstract

A method enables a wireless device () to rendezvous with another wireless device () through a wireless network (), where activation schedules of the wireless devices are not synchronized. The method includes determining a number of time units in each cycle of multiple communication cycles, identifying active time units in each cycle during which the first wireless device enters an active mode, and identifying inactive time units in each cycle during which the first wireless device enters an inactive mode. The sum of the active time units and the inactive time units equals the number of time units in each cycle. A first active time unit in each cycle occupies a same position in the cycle as an active time unit in a previous consecutive cycle. Also, a second active time unit in each cycle occupies a different position in the cycle than any active time unit in the previous consecutive cycle.


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