Method and device for associating call detail records (CDRs), and method and device for generating CDRs

Abstract

The invention discloses a method and a device for associating call detail records (CDRs). According to the technical scheme, the method for associating the CDRs comprises the following steps of: acquiring a handover required (HR) message which is transmitted to a first base station controller (BSC) by a mobile switching center (MSC) and an HR confirmation message which is transmitted to the MSC by the first BSC, generating a first handover key value according to the HR message and the HR confirmation message, and associating the generated first key value pair by using the first handover key value; acquiring a handover command which is transmitted to a second BSC by the MSC; generating a second handover key value according to the HR message and information which is carried in the handover command and is the same as the HR confirmation message, and associating the generated second key value pair by using the second handover key value; and establishing an incidence relation of the CDRs corresponding to the first key value pair and the second key value pair according to the first key value pair associated with the first handover key value and the second key value pair associated with the second handover key value. Due to the adoption of the technical scheme, the CDRs generated before and after handover can be associated.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to an associating method, a generating method and a device for call detail records. Background technique [0002] A interface is a standard interface between NSS (Network Switch Subsystem, Network Switch Subsystem) and BSS (Base Station Subsystem, Base Station Subsystem) in GSM (Global System for Mobile Communications, Global System for Mobile Communications), which is MSC in physical entity (MobileSwitching Center, mobile switching center) and BSC (Base Station Controller, base station controller), the A interface adopts the BSSAP (Base Station System Application Part, base station subsystem application part) protocol. [0003] The A interface can use the SCCP (Signalling Connection Control Part, signaling connection control part) connectionless service class and connection-oriented service class protocols to implement functions. Functions such as connection establis...

AI Technical Summary

Problems solved by technology

[0017] The above-mentioned call process event composition algorithm for the BSSAP protocol on the A interface is realized by obtaining the signaling message of the signaling link, which has a very critical shortcoming, that is, if the user initiates a call and connects it and then switches across location areas, When the handover process is successfully completed, the SCCP layer of the signaling message switched to the new location area will adopt a new SLR and DLR, and the 14-bit signaling point code may also change, so that the signaling message generated by switching to the new location area The key value is completely different from the key value generated by the signaling message of the original location area at the beginning of the call establishment. The call detail record established in the original location area is closed when the connection release message is received, so that the user switches to other new locations The signaling message generated by the zone cannot be associated with the originating call structure

Therefore, after the user cuts out from the location area where the call originated, he cannot obtain the subsequent signaling information related to the user. If the user hangs up and ends the call in the new location area where the call is cut in, the original call detailed record cannot accurately provide the user's full-time information. Call duration (the call duration before switching out + the call duration when switching into the new location area), the cause value of the hang-up release (the release message is exchanged between the network elements switched into the new location area), because the user number information generally includes In the initial call detail record, if the user sends a cross-location area handover during the call, the signaling monitoring system cannot correlate the call detail records before and after the handover in the case of sending a location area handover during the call, so that Deviations in call record results such as call failure reasons, call duration, etc.

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