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. 28, 2005
Filed:
Jul. 20, 2001
Doo-yong Yang, Seoul, KR;
Doo-Yong Yang, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
Providing a roaming service among private mobile switching centers (MSCs) interconnected to one another via a public switched telephone network (PSTN) includes connecting the private mobile switching centers to a virtual private network (VPN) via the PSTN; storing information about a mobile station registered for a private mobile communication service and associated mobile station location information in a selected private mobile switching center upon a mobile station sending a private mobile communication service registration request to the selected one of the private mobile switching centers; transmitting the mobile station information and the mobile station location information to other private mobile switching centers via the virtual private network; and the selected private mobile switching center the private mobile communication service using the stored mobile station information and mobile station location information upon the mobile station sending a private mobile communication service request to a selected one of the private mobile switching centers.