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, 2012
Filed:
Apr. 19, 2005
Sang-yun Lee, Seongnam-si, KR;
Jae-young Ju, Gunpo-si, KR;
Hee-hyeok Hahm, Seoul, KR;
Young-ho Joo, Goyang-si, KR;
Bum-soo Shin, Seoul, KR;
Kyeong-hee Han, Seoul, KR;
Sang-Yun Lee, Seongnam-si, KR;
Jae-Young Ju, Gunpo-si, KR;
Hee-Hyeok Hahm, Seoul, KR;
Young-Ho Joo, Goyang-si, KR;
Bum-Soo Shin, Seoul, KR;
Kyeong-Hee Han, Seoul, KR;
SK Telecom Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a method of performing handover from an asynchronous mobile communication network to a synchronous mobile communication network. If the access network of the asynchronous mobile communication network () requests handover to an MSC () of the asynchronous mobile communication network, the MSC requests/receives subscriber information of the mobile communication terminal from a dual-stack HLR (), and transmits a handover request message to the synchronous mobile communication network (). The MSC () of the synchronous mobile communication network assigns a forward channel to the mobile communication terminal. The asynchronous mobile communication network () transmits a handover instruction message to the asynchronous RF device of the mobile communication terminal. Accordingly, the mobile communication terminal sets up a synchronous RF device, connects to the synchronous mobile communication network through reverse channel assignment and synchronization. The mobile communication terminal transmits a handover completion message to the synchronous mobile communication network.