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:
Jun. 02, 2009
Filed:
Mar. 13, 2006
Masaaki Takizawa, Fukushima, JP;
Tsutomu Suzuki, Fukushima, JP;
Masaaki Takizawa, Fukushima, JP;
Tsutomu Suzuki, Fukushima, JP;
Hitachi Communication Technologies, Ltd., Tokyo, JP;
Abstract
When wireless terminal A and wireless terminal B respectively transmit signals (T, T), and Access Point (AP) in the wireless LAN system recognizes occurrence of contention, if AP successfully recognizes an address of sending source of this signal and a duration of this signal as a result of analyzing any signal from the wireless terminal A, AP transmits a CTS signal which gives a clearance for transmission to the wireless terminal A which is the source of sending the signal (T). The wireless terminal A which is given the clearance for transmission by the CTS signal, resends a signal identical to the one previously sent (T), whereas the wireless terminal B which is not given the clearance for transmission by the CTS signal withholds a signal transmission during the duration indicated by the CTS signal.