Patent ID: 7295545
Filing Date: 2007-11-13
Classification: H04L,H04W

Abstract:
1. A method for maintaining a Point-to-Point Protocol (PPP) connection between a Mobile Terminal (MT) and a Packet Data Serving Node (PDSN), the method comprising the steps of: responsive to a detection at the PDSN that the PPP connection between the PDSN and the MT is inactive, receiving at a Base Station Controller/Packet Control Function (BSC/PCF) a first Link Control Protocol (LCP) Echo Request from the PDSN for locating the MT, the LCP Echo Request including a Short Data Burst (SDB) parameter, wherein the SDB parameter indicates that the message is sent using SDB; determining at the BSC/PCF based on the reception of SDB parameter, that a setup of a traffic channel (TCH) between the MT and a serving BS is to be avoided; and sending from the BSC/PCF a second LCP Echo Request to a Base Station (BS), the LCP Request including a NO Traffic Channel (No TCH) parameter for preventing a setup of a TCH for the MT.