| 摘要 |
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.
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