Abstract: Disclosed are a system, apparatus, and method for making statistics on Point to Point Protocol (PPP) negotiation state in a wireless system. The system includes: at least one user terminal; a packet data serving node communicating with the user terminal via PPP; a base station controller; and a call detail information recorder; wherein the base station controller, communicatively connected to the user terminal, captures a PPP negotiation packet of the user terminal, analyzes a PPP negotiation flow in the PPP negotiation packet, and sends an analysis result to the call detail information recorder; and the call detail information recorder, communicatively connected to the base station controller, collects data of various PPP negotiation states in the wireless system according to the analysis result. The disclosure conveniently counts PPP negotiation failures caused by the wireless system, thereby accurately reflecting performance of the whole wireless packet data system.

Abstract: The present invention provides a device and method for realizing prefix code construction. The device includes a sort indexer, a generator and a sequence regulator. The sort indexer is used to sort a group of received code lengths to obtain a group of sorted code lengths, and record the position correspondence relationship. The generator receives the sorted code lengths and orderly generates the prefix codes. Except that the first prefix code is preconfigured, the generator generates a current prefix code by adding one to the adjacently previous prefix code and then shifting left by a certain number of bits. The sequence regulator is used to receive the prefix codes corresponding to the sorted code lengths, and regulates the sequence of the prefix codes corresponding to the sorted code lengths according to the position correspondence relationship recorded by the sort indexer to obtain the prefix codes corresponding to the code lengths.

Abstract: The disclosure discloses a system for making statistics on Point to Point Protocol (PPP) negotiation state in a wireless system, which includes at least one user terminal and a packet data serving node that realizes a communication a connection with the user terminal via the PPP, and the system further includes a base station controller and a call detail information recorder; wherein the base station controller is communicatively connected to the 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 and send an analysis result to the call detail information recorder; and the call detail information recorder is communicatively connected to the base station controller, and is configured to make statistics on various state data of a PPP negotiation in the wireless system according to the analysis result.

Abstract: The present invention provides a device and method for realizing prefix code construction. The device includes a sort indexer, a generator and a sequence regulator. The sort indexer is used to sort a group of received code lengths to obtain a group of sorted code lengths, and record the position correspondence relationship. The generator receives the sorted code lengths and orderly generates the prefix codes. Except that the first prefix code is preconfigured, the generator generates a current prefix code by adding one to the adjacently previous prefix code and then shifting left by a certain number of bits. When the current prefix code is generated, the generator simultaneously judges whether the adjacently previous prefix code is identical to the current prefix code from the high bit, if yes, the error information is outputted; otherwise the prefix codes corresponding to the sorted code lengths are generated.