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:
Mar. 25, 2008
Filed:
Sep. 13, 2004
Yong Chang, Seongnam-si, KR;
Jun-hyuk Song, Anyang-si, KR;
Nae-hyun Lim, Seoul, KR;
Dae-gyun Kim, Seongnam-si, KR;
Ji-hae Yi, Suwon-si, KR;
Beom-sik Bae, Suwon-si, KR;
Yong Chang, Seongnam-si, KR;
Jun-Hyuk Song, Anyang-si, KR;
Nae-Hyun Lim, Seoul, KR;
Dae-Gyun Kim, Seongnam-si, KR;
Ji-Hae Yi, Suwon-si, KR;
Beom-Sik Bae, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A system and method for synchronizing Broadcast/Multicast Service (BCMCS) traffic in a mobile communication system connected to a BCMCS server. A Packet Data Service Node (PDSN) receives a BCMCS content frame from the BCMCS server, and transmits a corresponding Generic Routing Encapsulation (GRE) packet BCMCS content frame, including a sequence number and a timestamp value indicating when the GRE packet BCMCS content frame is transmitted, to Packet Control Functions (PCF) connected downstream of the PDSN. Each of the PCFs determines whether the GRE packet BCMCS content frame received from the PDSN is valid, based on the sequence number included therein. If the GRE packet BCMCS content frame is valid, the PCF transmits the frame to its lower nodes connected downstream of the PCF, while synchronizing the frame transmission, based on the timestamp value included in the frame.