LTE user cs domain fallback and return signaling analysis method

Abstract

The invention discloses a method for analyzing fallback and returned signalling of a LTE (Long Term Evolution) subscriber in a CS (circuit-switched) domain. The method is characterized by comprising the following steps that: signalling in a network is analyzed, tracked and correlated when a signalling monitoring system in a mobile communication network monitors voice and short message calls of the LTE subscriber in the CS domain; and the subscriber identification IMSI (International Mobile Subscriber Identity) of the subscriber and a signalling process having a complete fallback process are obtained. According to the invention, by adopting a multi-interface signalling track processing and correlated calculating method, reduction of a complete voice and short message call process of the LTE subscriber is realized; operators are convenient to perform end-to-end complete process analysis; CSFB (Circuit Switched Fallback) failure, long CSFB time delay and faults of various network nodes can be located; and thus, the method disclosed by the invention is a high-efficiency and reliable method for tracking and analyzing voice and short message calling processes of the LTE subscriber in the CS domain.

Description

technical field [0001] The invention relates to an analysis method for LTE user CS domain fallback and return signaling, which belongs to the field of mobile communication. Background technique [0002] The LTE network is the smoothest upgrade route for the GSM / UMTS network, and is currently the main network architecture promoted by operators. LTE mainly provides users with a high-speed data communication network, that is, data communication in the PS domain. The traditional voice and SMS services in the CS domain are currently implemented on the 2G and 3G networks of the GSM / UMTS standard. [0003] The current signaling monitoring and analysis platform performs full signaling monitoring and analysis on the Mc port and each interface in the data PS domain of GSM, UMTS, and LTE networks (ie, 2G, 3G, and 4G networks). , the voice and SMS fall back to 2G, 3G and the signaling association processing of the process of returning to the LTE network after the call is completed. Wh...

AI Technical Summary

Problems solved by technology

[0004] For example, in the fourth issue of "Telecommunications Network Technology" in April 2014, the end-to-end optimization and analysis method of TD-LTE CSFB service based on the signaling monitoring system was disclosed. This method still has the following shortcomings in practical application: 1. This document It only describes the signaling process of LTE user fallback, and does not propose the specific data processing and association methods of XDR in the signaling fallback and return process on each interface. It is a principle introduction of the LTE user fallback signaling process, not based on Signaling data, generate XDR data of each interface, and then correlate it into a complete XDR, which is used to describe the specific and practical method for describing the complete process of the user's voice and SMS calls; Signaling trace, the specific method of generating their own XDR, to fully describe the process of LTE user fallback and return, it is necessary to perform signaling trace on the Mc interface, S1 interface, and SGs interface respectively, and generate their own XDR records, which are the LTE user CS domain The most basic part of the fallback and return signaling analysis; 3. This document does not mention the processing of the LTE user's CS domain return process. To fully describe the user's signaling process, it is necessary to pay attention to the user's fallback and return process in the CS domain. In order to track and analyze the whole process of users, and realize the end-to-end full process analysis of LTE user voice and SMS calls; 4. In the analysis of LTE network fallback signaling, this document only analyzes the Paging and ExtendedService Request signaling, and the Service Request, Initial UE Context Setup signaling has not been analyzed accordingly, and it is only suitable for the analysis of some user fallback processes. In the actual signaling monitoring and analysis system, there will be a large number of LTE users fallback XDR loss

5. This document does not describe the specific method of association based on the key fields on each interface. The association of each interface needs to be matched and associated according to the respective key fields on each interface to generate the XDR of the complete process