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.
Patent No.:
Date of Patent:
Jan. 21, 2008
Filed:
Feb. 18, 2003
Hendrik Van Bokhorst, Nijkerk, NL;
Albertus M. G. Claessen, Oakwood, GA (US);
Wilhelmus J. M. Diepstraten, Haghorst, NL;
Johannes P. N. Haagh, Eindhoven, NL;
Hendrik Moelard, Maarssen, NL;
Leo Monteban, Nieuwegein, NL;
Rienk Mud, Wijk bij Duurstede, NL;
Hendrik van Bokhorst, Nijkerk, NL;
Albertus M. G. Claessen, Oakwood, GA (US);
Wilhelmus J. M. Diepstraten, Haghorst, NL;
Johannes P. N. Haagh, Eindhoven, NL;
Hendrik Moelard, Maarssen, NL;
Leo Monteban, Nieuwegein, NL;
Rienk Mud, Wijk bij Duurstede, NL;
Agere Systems Inc., Allentown, PA (US);
Abstract
A wireless data communication system is operable in a power saving mode wherein stations are synchronized to be in an awake state to receive synchronizing messages (TIM, PSYNC) and traffic indicator information and are changed to a doze state if they are not to receive data messages. In one embodiment all stations () communicate via a base station access point (), which broadcasts synchronizing messages (TIM) at regular intervals identifying stations () that are to receive data messages. In another embodiment all stations () communicate directly with one another, one station assumes the role of a master station and broadcasts synchronizing messages (PSYNC), and stations () desiring to transmit data messages transmit traffic indicator messages (PTIM) to the appropriate destination stations (), in a synchronized awake period just before the next synchronizing message (PSYNC) is expected to arrive.