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:
May. 20, 2014
Filed:
Jun. 09, 2010
Jianhui Tao, Beijing, CN;
Jianhui Tao, Beijing, CN;
Mediatek (Beijing) Inc., Beijing, CN;
Hesine Technologies, Inc., Beijing, CN;
Abstract
A method to maintain Network Address Translation (NAT) binding is provided. The method includes: an edge NAT router mapping a source address of a data packet from a mobile terminal to the source address of the edge NAT router, and mapping a destination address of the data packet from a computing device to the destination address of the mobile terminal, and maintaining the two address mapping relationships for a first time interval; the computing device sending a heartbeat packet to the mobile terminal according to a second time interval smaller than the first time interval, so a Time To Live set value progressively decreases to 0 as the heartbeat packet reaches the edge NAT router, thereby maintaining a link from the mobile terminal to the computing device, such that the heartbeat packet will not be sent down to the handheld device.