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:
Oct. 11, 2011
Filed:
Jul. 11, 2008
Masao Matsumoto, Aichi-ken, JP;
Kazuoki Matsugatani, Kariya, JP;
Masao Matsumoto, Aichi-ken, JP;
Kazuoki Matsugatani, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
In a commutation system, a data packet is transmitted and received by radio among radio communication apparatuses. In the communication system, the data packet is started to be transmitted on a transmission right acquired on contention type access control in response to a transmission request for the data packet. It is detected that there is a predetermined state in which the transmission request is generated during or after reception of a long packet which is over a given packet length. When the predetermined state is detected, a start timing of the access control is shifted to a timing at which a desired delay time passes after completing reception of the long packet. One example is that an elapse time from a start of reception of the long packet to generation of the transmission request is measured and, as the desired delay time, a period of time calculated by multiplying the measured elapse time by a specified coefficient is set.