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:
Dec. 25, 2007
Filed:
Dec. 03, 2001
Toshiyasu Yabe, Chiba, JP;
Masaki Kawabata, Saitama, JP;
Shoji Kashiwaba, Yokohama, JP;
Taichi Yoshida, Ichikawa, JP;
Toshiyasu Yabe, Chiba, JP;
Masaki Kawabata, Saitama, JP;
Shoji Kashiwaba, Yokohama, JP;
Taichi Yoshida, Ichikawa, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
When gateway serverreceives an email, which is addressed to mobile station, gateway servertransmits an email arrival notice to mobile station. When gateway serverreceives an acknowledgement response (referred to as 'Ack' hereinafter) responding to the email arrival notice from mobile packet communication network, gateway serverevaluates the status of mobile stationon the basis of the type of Ack, and determines whether to transmit the email or not. Moreover, gateway servermodifies the time interval for retransmitting the email arrival notice to mobile stationaccording to the status of mobile stationwhen the transmission of the email arrival notice fails.