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:
Sep. 06, 2011
Filed:
Dec. 18, 2006
Zi-tsan Chou, Taipei, TW;
Zi-Tsan Chou, Taipei, TW;
Institute for Information Industry, Taipei, TW;
Abstract
Adaptive power management methods and systems for a first station and a second station in a wireless network. Each station operating in the power-saving (PS) mode adaptively determines a 'listen interval' (LI) according to residual power state, quality-of-service requirements, or other considerations. The LI is composed of a 'normal beacon interval' (NBI) followed by the combination of “beacon-window-only beacon intervals” (BBIs) and “sleep beacon intervals” (SBIs). The LI value is one or a prime number which is larger than two, and the positions of the NBI and BBIs in an LI form a cyclic difference set. Each station broadcasts a beacon frame comprising at least information about “the remaining number of BIs (RBI)” within a beacon window. Once the first station correctly receives the beacon frame from the second station, the first station predicts the awake/sleep schedule of the second station, and transmits data frames to the second station at the NBI of the second station.