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:
Nov. 17, 2009
Filed:
Nov. 22, 2005
Tai-xing Yu, Tainan, TW;
Ting-kai Hung, Jhudong Township, Hsinchu County, TW;
Hung-chi Hsu, Hsinchu, TW;
Shiao-li Tsao, Taipei, TW;
Tai-Xing Yu, Tainan, TW;
Ting-Kai Hung, Jhudong Township, Hsinchu County, TW;
Hung-Chi Hsu, Hsinchu, TW;
Shiao-Li Tsao, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A system and method for reducing call establishment delay in wireless network is provided, in which a network node establishes a call to a wireless terminal controlled by an AP via a server. The wireless terminal notifies the server of its listen interval. In the power saving mode, the wireless terminal wakes up every listen interval and listen the beacon to check whether any buffered packet for it. When the wireless terminal learns from the beacon that there are packets waiting, it communicates with the access point to retrieve them. The server records a listen time at which the wireless terminal will wake up and listen to the AP based on the listen interval. When a network node calls the wireless terminal, the server buffers the request for a time interval based on the listen time, and then sends the request to the wireless terminal.