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:
Feb. 27, 2007
Filed:
Oct. 20, 2000
Shinichi Baba, Morristown, NJ (US);
Jyh-cheng Chen, Flanders, NJ (US);
Ashutosh Dutta, Lake Hiawatha, NJ (US);
Yasuro Shobatake, Morristown, NJ (US);
Faramak Vakil, Bedminster, NJ (US);
Shinichi Baba, Morristown, NJ (US);
Jyh-Cheng Chen, Flanders, NJ (US);
Ashutosh Dutta, Lake Hiawatha, NJ (US);
Yasuro Shobatake, Morristown, NJ (US);
Faramak Vakil, Bedminster, NJ (US);
Telcordia Technologies, Inc., Piscataway, NJ (US);
Toshiba America Research, Inc., Piscataway, NJ (US);
Abstract
The present invention is directed to a mobility management protocol for supporting real-time and non-real-time multimedia applications on mobile stations of third generation internet protocol (3G-IP) networks. The present invention utilizes as well as extends the session initiation protocol (SIP) to provide for domain hand-off (i.e., roaming) and subnet hand-off (i.e., macro-mobility) so that users can access the network from any location using their own mobile station as they roam across different 3G-IP networks. The present invention supports mobile transmission control protocol (TCP) applications without modifying TCP. More specifically, disclosed herein is: a novel use of the SIP INVITE method for IP address binding; a novel use of the SIP INFO method to provide a means of profile verification and IP address binding; a novel use of the SIP REGISTER method to allow a SIP registrar to obtain a new IP address from a Dynamic Host Configuration Protocol (DHCP) server on behalf of the mobile; and an inventive entity called a SIP_EYE Agent that maintains a record of ongoing TCP connections and releases within the mobile.