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. 30, 2010
Filed:
Aug. 07, 2007
Akira Yamada, Yokohama, JP;
Kengo Yagyu, Yokohama, JP;
Akira Yamada, Yokohama, JP;
Kengo Yagyu, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A wireless communication system complying with a CSMA scheme includes one or more wireless communication apparatuses and a communication terminal that performs communication via the one or more wireless communication apparatuses. Each wireless communication apparatus includes: a transmission buffer configured to store a packet and output the packet according to transmission timing; a unit configured to determine a permissible delay time based on required quality for communication; and a control unit configured to determine the transmission timing, wherein, the control unit determines the transmission timing such that, after receiving a first packet, the wireless communication apparatus transmits the first packet after elapse of a waiting time that includes a period derived from a random number and the permissible delay time, and after receiving a response packet for the first packet, the wireless communication apparatus transmits a following second packet after elapse of a fixed period.