Offline charging CDR (Call Detail Records) threshold control method and system based on CUPS protocol

Abstract

The embodiment of the invention provides an offline charging CDR (Call Detail Records) threshold control method and system based on a CUPS protocol. The method comprises the steps that a CP establishes a session, wherein a message sent to a UP comprises the maximum number of charging condition change times; the UP reports the charging information to the CP according to a subscription condition oran instant querying request sent by the CP, and calculates the number of charging condition change times: continuing to perform the accumulation of used traffic flow on the basis of the existing accumulated used traffic flow if the calculated number of times is less than the maximum number of charging condition change times; the UP performs the zero clearing of the charging information of the offline charging CDR and the number of flow containers at a local side if the calculated number of times is equal to the maximum number of charging condition change times. According to the technical scheme of the invention, the method can reduce the additional signal overhead between the CP and the UP because of the updating of the threshold value, and also can prevent the charging result of the offline charging CDR from exceeding the threshold value due to the interaction delay of an updating message between the CP and the UP.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a method and system for controlling the threshold value of offline billing bills based on the CUPS protocol. Background technique [0002] In the network architecture of the 3GPP protocol R14 version, EPC gateways (including SGW (Serving Gateway, service gateway), PGW (Public Data Network Gateway, data network gateway) and TDF (Traffic Detection Function, traffic detection function)) are split into control planes The network element (Control Plane, CP) and the user plane network element (UserPlane, UP), the function of the original EPC gateway is completed by the cooperation of the CP and the UP. The part of the 3GPP protocol for this network architecture is also called the CUPS protocol. [0003] The CP interacts with the UP through the Sx interface to complete functions such as data forwarding, policy control, and billing of the original EPC gateway. Amon...

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Problems solved by technology

[0016] However, there are following problems in the existing method of forcibly updating the traffic threshold based on the billing information reported by the UP: (1) CP and UP must update the traffic threshold through additional message interaction (the same is true for the time threshold); (2) If the threshold is not updated in time, the charging result of the offline billing bill will exceed the threshold, for example figure 1 In the process shown, if the traffic used by the UP side is 9M instead of 3M when the tariff switching time point arrives, when the CP notifies the UP to update the traffic threshold to 1M, the UP may have used 2M traffic again, so the currently open Even if the offline billing bill is closed immediately, the traffic billing result in the offline billing bill will be 9M+2M=11M, which will cause an error in the subsequent processing of the offline billing bill

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