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. 11, 2008
Filed:
Jun. 16, 2004
Se-youn Lim, Seoul, KR;
Jae-yeon Song, Seongnam-si, KR;
Jin-hee Kim, Suwon-si, KR;
Seo-won Kwon, Suwon-si, KR;
Yoon-sun Lee, Seoul, KR;
Jong-hwa Lee, Suwon-si, KR;
Se-Youn Lim, Seoul, KR;
Jae-Yeon Song, Seongnam-si, KR;
Jin-Hee Kim, Suwon-si, KR;
Seo-Won Kwon, Suwon-si, KR;
Yoon-Sun Lee, Seoul, KR;
Jong-Hwa Lee, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Abstract
A multicast transmission method in GEM mode in Gigabit-capable passive optical network and a method of processing frames. The multicast transmission method includes the steps of: (a) setting a multicast connection; and (b) transmitting multicast messages in a GEM mode, wherein said step (a) includes a first sub step (i), in which predetermined ONTs are registered to a multicast group by means of IGMP frames in the first step, and a second sub step (), in which an OLT assigns a multicast port ID to the multicast group and the ONTs registered to the multicast group. In addition, step (b) includes a first substep (i), in which the OLT assigns a multicast port ID to a message transmitted from a router to the multicast group, and transmits the message, and a second sub-step (ii), in which an ONT, which belongs to the OLT, filters the message, to which the multicast port ID is assigned, by means of a port ID assigned to the ONT.