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:
Jun. 09, 2009
Filed:
Aug. 25, 2004
Kook-heui Lee, Yongin-si, KR;
Xiaoqiang LI, Haidian District, CN;
Detao LI, Haidian District, CN;
Chunying Sun, Haidian District, CN;
Lixiang Xu, Haidian District, CN;
Sung-ho Choi, Suwon-si, KR;
Kook-Heui Lee, Yongin-si, KR;
Xiaoqiang Li, Haidian District, CN;
Detao Li, Haidian District, CN;
Chunying Sun, Haidian District, CN;
Lixiang Xu, Haidian District, CN;
Sung-Ho Choi, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Beijing Samsung Telecom R&D Center, Beijing, CN;
Abstract
A method for supporting backward compatibility of Multimedia Broadcast and Multicast Service (hereinafter referred to as MBMS) in a mobile communication system of Wideband Code Division Multiple Access (hereinafter referred to as WCDMA) is disclosed. An example method recites mapping relationship between the MBMS service identifier and the RAB identifier and judging the capability of the RNC by the SGSN, and accordingly, determining if the MBMS service is backwards compatible and if user equipment is compatible with different versions.