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:
Aug. 07, 2007
Filed:
Apr. 12, 2001
Hijin Sato, Yokohama, JP;
Kobaruto Shimada, Yokosuka, JP;
Toshiaki Takao, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
Hijin Sato, Yokohama, JP;
Kobaruto Shimada, Yokosuka, JP;
Toshiaki Takao, Yokohama, JP;
Narumi Umeda, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
The present invention is configured such that, in a multicast service providing system in which multicast information distribution service is made from an information distributing apparatus to radio terminals present within a service area via a radio section, the radio terminal has service continuation request signal transmitting a service continuation request signal for requesting continuation of the multicast information distribution service to the information distributing apparatus, the information distributing apparatus has service continuation management means managing as to whether or not request for the service continuation has been made by the radio terminal for the multicast information distribution service, and the information distributing apparatus transmits information indicating as to whether or not continuation request has been made for the multicast information distribution service managed by the service continuation management means.