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:
Nov. 13, 2007
Filed:
Jul. 01, 2004
Dipankar Ray, Dorval, CA;
Louis Segura, St-Laurent, CA;
Dipankar Ray, Dorval, CA;
Louis Segura, St-Laurent, CA;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
Abstract
The invention relates to a method for maintaining a Point-to-Point Protocol (PPP) connection between a Mobile Terminal (MT) and a Packet Data Serving Node (PDSN). Responsive to a detection at the PDSN that the PPP connection between the PDSN and the MT is inactive, the method sends a first Link Control Protocol (LCP) Echo Request, which including a Short Data Burst (SDB) parameter, wherein the SDB parameter indicates that the message is sent using SDB, from the PDSN to a Base Station Controller/Packet Control Function (BSC/PCF) for locating the MT. The method further determines on the reception of SDB parameter, not to setup a traffic channel (TCH) between the MT and a serving BS. Next, the method sends from the BSC/PCF to the BS a second LCP Echo Request, which includes a NO Traffic Channel (No TCH) parameter instructing not to setup a traffic channel for the MT.