Patent ID: 8774011

Claim:
A system for acquiring statistics on Point to Point Protocol (PPP) negotiation states in a wireless system, comprising: at least one user terminal and a packet data serving node (PDSN) communicatively connected to the user terminal via a PPP, and further comprising: a base station controller and a call detail information recorder; wherein the base station controller is communicatively connected to the at least one user terminal, and is configured to capture a PPP negotiation packet of the user terminal, analyze a PPP negotiation flow in the PPP negotiation packet using a PPP negotiation state machine, and send the call detail information recorder an analysis result comprising a cause of an unsuccessful PPP negotiation, wherein the cause of an unsuccessful PPP negotiation comprises an issue in the wireless system or an issue at the PDSN; and the call detail information recorder is communicatively connected to the base station controller, and is configured to acquire, according to the analysis result, statistical data on various PPP negotiation states in the wireless system, wherein the statistical data on various PPP negotiation states comprise a rate of unsuccessful PPP negotiations caused by the wireless system.