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. 27, 2019
Filed:
Mar. 24, 2016
Sprint Communications Company L.p., Overland Park, KS (US);
Rajil Malhotra, Olathe, KS (US);
Chidambaram C. Pavanasam, Overland Park, KS (US);
Badri Prasad Subramanyan, Overland Park, KS (US);
Anubhav Visen, Overland Park, KS (US);
Sprint Communications Company L.P., Overland Park, KS (US);
Abstract
Methods and systems are provided for identifying, to an external device, a client device having an external IP address assigned by a Network Address Translation (NAT) device. Initially, the NAT device provides an external IP address assigned to a client device to access an external device. Upon the client device communicating with the external device, the NAT device also provides an internal IP address assigned to the client device in an option field of the external IP address. If the external device later requests to communicate with the client device, and includes in the request the internal IP address in the option field of the external IP address assigned to the client device, the NAT device checks for sessions mapping to the client device. Upon determining there are no sessions mapped to the client device, a new connection is opened to the client device utilizing the internal IP address.