CN111328086A - Method and system for positioning abnormal section of call connection time delay - Google Patents

Abstract

The embodiment of the invention provides a method and a system for positioning an abnormal section of call connection time delay. The method comprises the following steps: acquiring time delay values of all stages in a call connection process; comparing the time delay value of each stage with the time delay reference value of the corresponding stage in the time delay reference table, and positioning the abnormal stage as an abnormal section according to the comparison result; the time delay reference table is used for indicating time delay reference values of all stages in the call connection process. According to the method and the system provided by the embodiment of the invention, the acquired time delay value of each stage of the user in the call connection process is compared with the time delay reference value of the corresponding stage in the time delay reference table, so that the abnormal section is positioned according to the comparison result, the time delay abnormal signaling flow can be quickly positioned, and the signaling abnormal flow is optimized in a segmented manner. The time delay section is clearly divided, the time delay analysis of each stage can be expanded, more specific time delay problems can be reflected and positioned from each stage, and the section-by-section rapid optimization processing is realized.

Description

Method and system for locating abnormal segment of call connection delay time

technical field

Embodiments of the present invention relate to the field of wireless communication technologies, and in particular, to a method and system for locating an abnormal segment of call connection delay.

Background technique

With the rapid development of mobile communication technology and mobile terminal technology, LTE voice service (Voice over LTE, VOLTE), as the current mainstream voice communication service, is changing people's voice consumption habits. Compared with traditional voice and instant messaging voice services, VOLTE can provide shorter call delay, higher voice quality, support high-definition voice, high-definition video and other communication services, and can achieve interconnection with 2G/3G live network voice services. . Delay is an important factor affecting speech quality. In the initial stage when a user initiates a voice service, the call connection delay directly reflects the user's real perception and experience of the voice service. Therefore, it is very important to determine whether the call connection delay is abnormal or not and to locate the abnormal segment in the network maintenance and optimization work.

The call connection delay is defined as follows: when the calling terminal is in a non-idle state, the time difference between when the calling terminal initiates a SIPINVITE message and when it receives a SIP 180 Ring message sent by the network side. When the calling terminal is in the idle state, since there is a service to be transmitted, the terminal will first initiate a random access message, the Service Request process, return to the RRC connection state, and then send a SIP INVITE message to establish a session connection. At this time, the call is connected. The delay calculation is the time difference between when the calling terminal initiates the Service Request message and receives the SIP 180Ring message sent by the network side.

Most of the existing call delay analysis solutions count the call connection delay from a single interface (such as the MW interface or GM interface in the IMS domain) of the VOLTE voice service core network system. The disadvantage is that the delay in each stage of the call connection process cannot be obtained Therefore, the process of abnormal signaling cannot be accurately located, and the segmentation optimization work cannot be supported quickly and accurately.

SUMMARY OF THE INVENTION

In view of the technical problems existing in the prior art, embodiments of the present invention provide a method and system for locating an abnormal segment of call connection delay.

In a first aspect, an embodiment of the present invention provides a method for locating an abnormal segment of call connection delay, including:

Obtain the delay value of each stage in the call connection process;

Compare the delay value of each stage with the delay reference value of the corresponding stage in the delay reference table, according to the comparison result, locate the abnormal stage and use it as the abnormal section; wherein, the delay reference table is used to indicate the call The delay reference value of each stage during the switch-on process.

In a second aspect, an embodiment of the present invention provides a system for locating an abnormal segment of call connection delay, including:

The delay value acquisition module is used to obtain the delay value of each stage in the call connection process;

The abnormal segment locating module is used to compare the delay value of each stage with the delay reference value of the corresponding stage in the delay reference table, and according to the comparison result, locate the abnormal stage and use it as the abnormal segment; wherein, the time delay The delay reference table is used to indicate the delay reference value of each stage in the call connection process.

In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, the processor implementing the program as described in the first aspect when the processor executes the program Steps of the provided method.

In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the method provided in the first aspect.

Embodiments of the present invention provide a method and system for locating an abnormal segment of call connection delay, by comparing the obtained delay values of users in each stage of the call connection process with the delay values of the corresponding stages in the delay reference table The reference values are compared to locate the abnormal segment according to the comparison result, which can quickly locate the abnormal signaling process of delay and optimize the abnormal signaling process by segments. The division of delay segments is clear, and the delay analysis of each stage can also be expanded, and more specific delay problems can be reflected and located from each stage, and can be quickly optimized and processed segment by segment.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a flowchart of a method for locating an abnormal segment of call connection delay provided by an embodiment of the present invention;

2 is a schematic diagram of locating an abnormal segment of call connection delay time provided by an embodiment of the present invention;

3 is a schematic diagram of intra-domain and inter-domain association provided by an embodiment of the present invention;

4 is a schematic structural diagram of a system for locating an abnormal segment of call connection delay provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of a physical structure of an electronic device according to an embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

FIG. 1 is a flowchart of a method for locating an abnormal segment of call connection delay provided by an embodiment of the present invention. As shown in FIG. 1 , the method includes:

Step 101: Acquire the delay value of each stage in the call connection process.

Specifically, for the call scenario of VOLTE calling VOLTE, the call connection process is divided into the following 12 stages:

(1) Calling default bearer establishment phase; (2) Calling dedicated bearer establishment phase; (3) Calling IMS domain call establishment phase; (4) Called ISCSF interoffice addressing phase; (5) Called SCSCF search (6) called preselection phase; (7) called IMS domain call establishment phase; (8) called paging phase; (9) called default bearer establishment phase; (10) called dedicated bearer establishment phase ; (11) Resource reservation stage; (12) Ringing trigger stage.

It should be noted that other call service scenarios (according to the call service characteristics of LTE users, the call scenarios of voice service users can be divided into VOLTE calling VOLTE, VOLTE calling CS (2G/3G users), VOLTE calling CS (domain selected to CS) , CS calls VOLTE, CS calls CS and other business scenarios) can also be segmented in the above manner according to the characteristics of this service.

The following 12 stages are described in detail:

(1) The calling default bearer establishment stage

Mainly refers to the calling user initiates a VOLTE call in the LTE idle state, and establishes or restores the bearer process of QCI=5. The calling user sends an Invite message to indicate that the calling party's default bearer is established. This segmented delay can be evaluated as a short delay in starting the preparation process in the LTE network after the user initiates a call.

(2) Calling Dedicated Bearer Establishment Phase

Mainly refers to that after the calling SBC receives a request for establishing a VOLTE session from the calling user, it starts Precondition (resource reservation) and initiates a dedicated bearer establishment process with QCI=1/2. This segment delay can evaluate the IP-CAN session modification delay caused by the establishment of the AF session in the PCC domain on the calling side, and the response process delay of the mobile terminal on the calling side to the establishment of the dedicated bearer.

(3) The calling IMS domain establishment stage

Mainly refers to the process delay that the calling side PCSCF receives the Invite message from the Gm interface, and the SIP signaling message starts to trigger the service in the IMS domain core network, until the last AS returns the Invite message. This segmented delay evaluates the total delay of the initial processing process of a series of SIP signaling in the calling IMS as a whole. According to different user subscription services, the IMS domain establishment delay will also vary greatly. Processing performance of SIP signaling messages.

The difference between the minimum delay and the maximum delay for the establishment of the calling IMS domain is that the NEs process and forward the SIP signaling during the interaction of several interfaces in the IMS domain. It can be about 10ms, and in extreme cases it can reach tens of milliseconds. Due to the cumbersome signaling process in the IMS domain, the accumulated delay will become longer.

(4) The called ICSCF inter-office addressing phase

Mainly refers to the signaling routing process delay between the calling SCSCF and the called ICSCF. The segment delay can be used to evaluate the process delay of querying DNS routing ICSCF, and the transmission delay of local inter-office or long-distance signaling network.

(5) The called SCSCF addressing stage

Mainly refers to the signaling routing process delay between the called ICSCF and the called SCSCF. Query the HSS to select the SCSCF process delay and the calling and called SCSCF inter-office signaling processing delay.

(6) The called IMS domain establishment stage

The delay in establishing the calling IMS domain is the opposite process. It refers to the delay of triggering the subscription service in the called IMS core network after the initial session message of the Invite reaches the called SCSCF, until it is transferred out of the Invite through the called Gm interface.

(7) The called domain selection stage

The MMTel AS/SCC AS sends a UDR message to the called converged HLR/HSS, requesting to obtain the T-ADS information of the called user to the called converged HLR/HSS and returns the T-ADS information through the UDA message according to the IDA message returned by the called MME To the called MMTel AS/SCC AS. In this process, the called user domain selection process delay is established, which is used for statistical analysis of the called domain selection delay. The delay at this stage is included in the called IMS domain establishment delay.

(8) called paging stage

The called-side EPC sends an Invite message to the called user in the idle state. Since the called user is in the idle state, the called-side EPC triggers a paging process to page the called user in the idle state. This segment delay can evaluate the LTE paging delay of VOLTE calls and evaluate whether the paging mechanism of the LTE system is reasonable.

(9) The called default bearer establishment stage

It mainly refers to the delay in the process of triggering RRC connection, security mode, and establishing or restoring the bearer of QCI=5 after the called user receives the paging message. The segmented delay can evaluate the short delay of the LTE network where the called user is located for the preparation process of the VOLTE call initiation.

(10) The called dedicated bearer establishment stage

After receiving the 183 session processing message of the called user, the called SBC starts Precondition (resource reservation) and initiates the process of establishing dedicated bearers with QCI=1 and 2. This segment delay can evaluate the IP-CAN session modification delay caused by the establishment of the AF session in the PCC domain of the called side, and the response process delay of the called mobile terminal to the establishment of the dedicated bearer.

(11) Resource reservation stage

Refers to the delay process from the 183 message returned by the called side IMS network to the calling side carrying the SDP media resource negotiation content until the calling side receives the media resource negotiation process complete message. This segment delay can evaluate the delay of the calling side receiving the media resource reservation process of the called side, the processing and forwarding delay of each network element in VOLTE on the media resource negotiation process, and the terminal's response delay to the media resource negotiation process. Temporary response reliability confirmation process delay.

(12) Ringing trigger stage

Refers to the process delay that after the media negotiation resource reservation is completed, the called mobile phone triggers a 180 ringing message until the calling mobile phone receives the ringing message. This segment delay mainly considers the short duration of the CRBT triggering process. If there is no CRBT, this segment delay is usually very short.

For any user, obtain the delay value of the user at each stage in the call connection process. The obtaining method is as follows: According to the unique user label, request time, interface network element name and request type, restore the user's SIP call process , and combined with the definition of each stage, the actual delay value of each stage is obtained from the call connection process, that is, the delay value.

Step 102, compare the delay value of each stage with the delay reference value of the corresponding stage in the delay reference table, and locate the abnormal stage and use it as the abnormal section according to the comparison result; wherein, the delay reference table uses Indicates the delay reference value of each stage in the call connection process.

Specifically, the delay reference table is used to indicate the delay reference value of each stage in the call connection process, and the obtained delay value of the user in each stage in the connection process is compared with the delay reference table of the corresponding stage in the delay reference table. The comparison is performed along the reference value, and the abnormal stage is located according to the comparison result and used as the abnormal segment.

FIG. 2 is a schematic diagram of locating an abnormal segment of call connection delay provided by an embodiment of the present invention. As shown in FIG. 2 , the delay reference table includes a delay reference set T={T1, T2,...T12}, where , Ti is the delay reference value of the i-th stage. A set of delays t={t1, t2, . . . t12} of each stage in the connection process of the user is obtained, where ti (i=1˜12) is the delay value of the ith stage. Compare t1 with T1 respectively to determine whether the first stage is an abnormal segment, compare t2 with T2 to determine whether the second stage is an abnormal segment, ..., compare t12 with T12, and determine the twelfth stage Whether it is an exception segment.

The method provided by the embodiment of the present invention compares the obtained delay value of the user at each stage in the call connection process with the delay reference value of the corresponding stage in the delay reference table, so as to locate the abnormality according to the comparison result. Segments can quickly locate the abnormal signaling process of delay, and optimize the abnormal signaling process by segment. The division of delay segments is clear, and the delay analysis of each stage can also be expanded, and more specific delay problems can be reflected and located from each stage, and can be quickly optimized and processed segment by segment.

On the basis of the foregoing embodiments, the embodiments of the present invention focus on the construction process of the delay reference table. That is, compare the delay value of each stage with the delay reference value of the corresponding stage in the delay reference table, which also includes:

In the IMS domain, a first interface set to be collected is determined; wherein the first interface set includes any one or more of the GM interface, MW interface, ISC interface, MG interface, MJ interface, CX interface, and SH interface ;

In the PCC domain, a second interface set to be collected is determined; wherein, the second interface set includes any one or more of an RX interface and a GX interface;

In the EPC domain, determine a third interface set to be collected; wherein, the third interface set includes any one or more of the S1-MME interface, the S11 interface, and the S6a interface;

collecting signaling data of each interface in any one or more of the first interface set, the second interface set, and the third interface set;

Correlate the collected signaling data of each interface to determine the delay reference value of each stage in the call connection process, and form a delay reference table.

It should be noted that the prior art is usually based on single-interface data analysis, and can only estimate call connection delay as a whole. If the information is not filled, the correlation rate will be reduced, which will affect the accuracy of the analysis, and the overall delay of the single-user all-call connection process cannot be fully and truly obtained. The method provided by the embodiment of the present invention collects the signaling data of S1-MME, S11, and S6a interfaces in the EPC domain, the interface signaling data of GM, MW, ISC, MG, MJ, CX, and SH in the IMS domain, and the RX interface in the PCC domain. , any one or more data in the signaling data of the GX interface, and perform correlation analysis on these signaling data, so as to determine the time delay reference value of each stage in the call connection process. Collaborative analysis based on multi-interface correlation is better than data analysis based on single interface, which can ensure the accuracy of the overall analysis of the call connection process, and can locate abnormal segments, quickly locate abnormal delay signaling processes, and optimize signaling abnormal processes by segments. .

On the basis of the foregoing embodiments, the embodiments of the present invention focus on how to associate the collected signaling data of each interface. That is, correlate the collected signaling data of each interface, including:

Correlate the collected signaling data of each interface within the domain;

Inter-domain association is performed on the signaling data obtained after the intra-domain association is completed.

It should be noted that the intra-domain association is to associate the signaling data of each interface collected in the IMS, associate the signaling data of each interface collected in the PCC, and associate the signaling data of each interface collected in the EPC. .

The inter-domain association is to associate the signaling data obtained after association in the IMS domain, the signaling data obtained after association in the PCC domain, and the signaling data obtained after association in the EPC domain.

On the basis of the foregoing embodiments, the embodiments of the present invention focus on how to perform intra-domain association. It should be noted that the embodiment of the present invention collects signaling data of the GM interface, MW interface, ISC interface, MG interface, MJ interface, CX interface, and SH interface of the IMS domain by default. Then, the collected signaling data of each interface is correlated within the domain, including:

Correlate the signaling data of the MW interface, ISC interface, MG interface, and MJ interface according to the ICID identifiers in the signaling data of the MW interface, ISC interface, MG interface, and MJ interface in the IMS domain;

Associate the signaling data of the GM interface and the MW interface according to the Call-ID field in the signaling data of the GM interface and the MW interface in the IMS domain;

Correlate the signaling data of the CX interface and the MW interface according to the called user ID in the signaling data of the CX interface and the MW interface in the IMS domain;

According to the called subscriber identity in the signaling data of the Sh interface and the MW interface in the IMS domain, the signaling data of the Sh interface and the MW interface are associated.

Specifically, the IMS domain contains interface signaling data such as GM, MW, ISC, MG, MJ, CX, SH, etc., wherein the MW, ISC, MG, and MJ interfaces have an ICID charging identification field, and their ICID identification is unique within a session, and Within 12 seconds, the user unique group ID field is added for the MW, ISC, MG, and MJ interfaces, that is, a unique user label is created for the MW, ISC, MG, and MJ interfaces, and the signaling data of these four interfaces is spliced through the user label. The GM interface cannot be associated without the ICID billing identifier. The calling-side GM interface is associated with the calling-side MW interface within 2 seconds according to the Call-ID field, and the calling-side MW interface is added according to the Call-ID field. User unique group ID field, the GM interface on the called side associates the MW interface on the called side within 2 seconds according to the Call-ID field, and adds the user unique group ID field on the MW interface on the called side. So far, the SIP protocol related interfaces in the IMS domain are associated.

Before the data association on the CX interface, filter out the XDR data of the LIR/LIA type message. According to the called user ID and the called user ID on the called side MW interface, they match each other within 2 seconds (the called number matches or the called IMSI matches respectively). , then add the user unique group ID field of the MW interface on the called side.

Before the data association on the Sh interface, first filter out the XDR data of the UDR/UDA type message. According to the called user ID and the called user ID on the called side MW interface, they match each other within 2 seconds (the calling and called IMSIs are matched respectively or the calling and called IMSIs are respectively matched). match), add the user unique group ID field of the MW interface on the called side.

On the basis of the foregoing embodiments, the embodiments of the present invention focus on how to perform intra-domain association. It should be noted that the embodiment of the present invention collects signaling data of the RX interface and the GX interface of the PCC domain by default. Then, the collected signaling data of each interface is correlated within the domain, including:

According to the session_id in the RX interface signaling data of the PCC domain, the RX interface is internally associated;

According to the session_id in the signaling data of the GX interface in the PCC domain, associate the GX interface internally;

Associate the signaling data of the RX interface and the GX interface according to the ICID identifier in the signaling data of the RX interface and the GX interface; data to be associated.

Specifically, the PCC domain contains the signaling data of the RX and GX interfaces. There are various messages on the RX and GX interfaces of each call service, and there are even multiple messages. The information carried by each message is different. Therefore, the data of the RX and GX interfaces is different. First of all, the internal association of the interface is carried out, and then the cross-interface association is carried out.

The internal association of the RX interface is based on whether the session_id is the same within 6 seconds, and if the same, the user's unique group ID field is added.

The internal association of the GX interface is based on whether the session_id is the same within 6 seconds. If the session_id is the same, the user's unique group ID field is added.

RX, GX interface association:

Rule 1. Both sets of data have ICID billing identifiers. According to whether the ICIDs in the two sets of data are the same, if they are the same, the two sets of data are combined into one set to produce a new user's unique group ID field and replace the original user's unique group ID field.

Rule 2. As long as one of the two sets of data of RX and GX does not have an ICID billing identifier, it will be based on whether the user identifier (user number or IMSI) can be matched within 2 seconds. The user's unique group ID field, replaces the original user's unique group ID field.

On the basis of the foregoing embodiments, the embodiments of the present invention focus on how to perform intra-domain association. It should be noted that the embodiment of the present invention collects signaling data of the S1-MME interface, the S11 interface, and the S6a interface of the EPC domain by default. Then, the collected signaling data of each interface is correlated within the domain, including:

According to the GUTI identifier in the signaling data of the S1-MME interface and the S6a interface in the EPC domain, associate the signaling data of the S1-MME interface and the S6a interface;

According to the user identifiers in the signaling data of the S11 interface and the S1-MME interface in the EPC domain, associate the signaling data of the S11 interface and the S1-MME interface.

Specifically, the EPC domain includes S1-MME, S11, and S6a interface signaling data, wherein S1-MME and S6a are associated through GUTI (Globally Unique Temporary UE Identity, globally unique temporary UE identity), GUTI is mcc+mnc+mme_code+m - tmsi composition, if the GUTI of S1-MME data and S6a interface data are the same within 4 seconds, the user's unique group ID field will be added.

The S11 interface and the S1-MME interface are associated with the same within two seconds according to the user identity IMSI, and if they are the same, the S11 interface adds the S1-MME interface user unique group ID field.

On the basis of the above embodiments, for the collected signaling data of the GM interface, MW interface, ISC interface, MG interface, MJ interface, CX interface and SH interface in the IMS domain, and signaling data of the RX interface and GX interface in the PCC domain, EPC domain S1-MME interface, S11 interface and S6a interface signaling data, the process of inter-domain association. Then, perform inter-domain association on the signaling data obtained after the intra-domain association, including:

According to the calling user identity in the MW interface signaling data and the user identity in the RX interface signaling data, associate the data obtained by intra-domain correlation in the IMS domain with the data obtained by intra-domain correlation in the PCC domain; or, according to the MW interface The calling user ID in the signaling data and the user ID in the GX interface signaling data, associate the signaling data obtained by intra-domain correlation in the IMS domain with the signaling data obtained by intra-domain correlation in the PCC domain;

According to the calling user identity in the MW interface signaling data and the user identity in the S1_MME interface signaling data, associate the signaling data obtained by intra-domain correlation in the IMS domain with the signaling data obtained by intra-domain correlation in the EPC domain.

Specifically, after the association between the IMS domain and the PCC domain, since the SIP signaling data of the GM interface in the IMS domain has security encryption, which involves data decryption, the data quality of the GM interface is lower than that of the MW interface, so the IMS domain selects the MW interface. The interface contains the calling user ID and the RX interface user ID in the PCC domain. If there is no RX interface in the PCC domain, it is associated with the GX interface user ID. The time is set within 2 seconds. If the association is successful, the IMS domain and the PCC domain are combined into the same set of data, and a new user's unique group ID field is generated to replace the original user's unique group ID field.

After the IMS domain is associated with the PCC domain, the inter-domain association is performed with the EPC domain. After the IMS domain is associated with the PCC domain, the calling and called CDRs of the MW interface are used to associate the EPC domain with the S1_MME interface data, and the MW interface calling and called user IDs are associated with the S1_MME interface. User ID, time set within 2 seconds. If the association is successful, the IMS domain PCC domain and the EPC domain are all combined into the same set of data, and a new user unique group ID field is generated to replace the original user unique group ID field.

FIG. 3 is a schematic diagram of intra-domain and inter-domain association provided by an embodiment of the present invention. As shown in FIG. 3 , first, for the IMS domain, the PCC domain, and the EPC domain, intra-domain association is performed respectively. Each domain performs inter-domain association, and the association process has been described in detail in the above embodiment, and will not be repeated here.

As an optional embodiment, the embodiment of the present invention specifically describes how to determine the reference delay value of each stage in the call connection process according to the associated data.

In the big data environment, first associate multiple interface data with unique user tags to form segmented delay data of a large number of users, and then use statistical methods to obtain the median/mean value of the delays in each stage, and combine with the 3GPP protocol The theoretical value in the network and the internal KPI assessment value of the operator are used to establish the delay benchmark value of each stage.

FIG. 4 is a schematic structural diagram of a system for locating an abnormal segment of call connection delay provided by an embodiment of the present invention. As shown in FIG. 4 , the system includes:

A delay value obtaining module 401, configured to obtain the delay value of each stage in the call connection process;

The abnormal segment locating module 402 is configured to compare the delay value of each stage with the delay reference value of the corresponding stage in the delay reference table, and locate the abnormal stage and use it as the abnormal segment according to the comparison result; The delay reference table is used to indicate the delay reference value of each stage in the call connection process.

The system provided by the embodiments of the present invention specifically executes the processes of the foregoing method embodiments. For details, please refer to the content of the foregoing method embodiments, which will not be repeated here. The system provided by the embodiment of the present invention compares the obtained delay value of each stage in the call connection process of the user with the delay reference value of the corresponding stage in the delay reference table, so as to locate the abnormality according to the comparison result. Segments can quickly locate the abnormal signaling process of delay, and optimize the abnormal signaling process by segment. The division of delay segments is clear, and the delay analysis of each stage can also be expanded, and more specific delay problems can be reflected and located from each stage, and can be quickly optimized and processed segment by segment.

FIG. 5 is a schematic diagram of the physical structure of an electronic device according to an embodiment of the present invention. As shown in FIG. 5 , the electronic device may include: a processor (processor) 501 , a communications interface (Communications Interface) 502 , and a memory (memory) 503 and a communication bus 504 , wherein the processor 501 , the communication interface 502 , and the memory 503 communicate with each other through the communication bus 504 . The processor 501 can call a computer program stored in the memory 503 and runnable on the processor 501 to execute the methods provided by the above embodiments, for example, including: acquiring the delay values of each stage in the call connection process; The delay value of the stage is compared with the delay reference value of the corresponding stage in the delay reference table, and according to the comparison result, the abnormal stage is located and used as the abnormal segment; wherein, the delay reference table is used to indicate that the call is connected The delay reference value of each stage in the process.

In addition, the above-mentioned logic instructions in the memory 503 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solutions of the embodiments of the present invention are essentially, or the parts that make contributions to the prior art or the parts of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

Embodiments of the present invention further provide a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to execute the transmission methods provided in the foregoing embodiments, for example, including: obtaining a call answer Through the delay value of each stage in the process; compare the delay value of each stage with the delay reference value of the corresponding stage in the delay reference table, according to the comparison result, locate the abnormal stage and use it as the abnormal section; among them, The delay reference table is used to indicate the delay reference value of each stage in the call connection process.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solutions of the embodiments of the present invention. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A method for locating an abnormal segment of call setup delay, comprising:

acquiring time delay values of all stages in a call connection process;

comparing the time delay value of each stage with the time delay reference value of the corresponding stage in the time delay reference table, and positioning the abnormal stage as an abnormal section according to the comparison result; the time delay reference table is used for indicating time delay reference values of all stages in the call connection process.

2. The method of claim 1, wherein comparing the delay value of each stage with the delay reference value of the corresponding stage in the delay reference table further comprises:

in an IMS domain, determining a first interface set to be acquired; the first interface set comprises any one or more of a GM interface, a MW interface, an ISC interface, a MG interface, an MJ interface, a CX interface and an SH interface;

determining a second interface set to be acquired in the PCC domain; wherein the second interface set comprises any one or more of an RX interface and a GX interface;

determining a third interface set to be acquired in an EPC domain; wherein the third set of interfaces includes any one or more of an S1-MME interface, an S11 interface, and an S6a interface;

acquiring interface signaling data in any one or more interface sets of the first interface set, the second interface set and the third interface set;

and correlating the acquired signaling data of each interface to determine the delay reference value of each stage in the call connection process to form a delay reference table.

3. The method of claim 2, wherein associating the collected interface signaling data comprises:

performing intra-domain association on the acquired signaling data of each interface;

and performing inter-domain association on the signaling data obtained after the intra-domain association is completed.

4. The method of claim 3, wherein performing intra-domain association on the collected interface signaling data comprises:

associating the MW interface, the ISC interface, the MG interface and the MJ interface signaling data according to the ICID in the MW interface, the ISC interface, the MG interface and the MJ interface signaling data of the IMS domain;

associating the signaling data of the GM interface and the MW interface according to the Call-ID field in the signaling data of the GM interface and the MW interface of the IMS domain;

according to the called user identification in CX interface and MW interface signaling data of IMS domain, correlating CX interface and MW interface signaling data;

and associating the Sh interface signaling data with the MW interface signaling data according to the called user identification in the Sh interface signaling data and the MW interface signaling data of the IMS domain.

5. The method of claim 4, wherein performing intra-domain association on the collected interface signaling data comprises:

performing internal association on an RX interface according to a session _ id in RX interface signaling data of a PCC domain;

performing internal association on the GX interface according to a session _ id in GX interface signaling data of the PCC domain;

associating the signaling data of the RX interface and the GX interface according to the ICID in the signaling data of the RX interface and the GX interface; or, associating the RX interface signaling data with the GX interface signaling data according to the user identifier in the RX interface signaling data and the GX interface signaling data.

6. The method of claim 5, wherein performing intra-domain association on the collected interface signaling data comprises:

associating the S1-MME interface with the S6a interface signaling data according to the GUTI identification in the S1-MME interface and S6a interface signaling data of the EPC domain;

and associating the S11 interface with the S1-MME interface signaling data according to the user identifications in the S11 interface of the EPC domain and the S1-MME interface signaling data.

7. The method of claim 6, wherein performing inter-domain association on the signaling data obtained after performing inter-domain association comprises:

associating the data obtained by association in the IMS domain with the data obtained by association in the PCC domain according to the identity of the calling and called users in the MW interface signaling data and the identity of the users in the RX interface signaling data; or, according to the calling and called user identification in the MW interface signaling data and the user identification in the GX interface signaling data, associating the signaling data obtained by association in the IMS domain with the signaling data obtained by association in the PCC domain;

and associating the signaling data obtained by association in the IMS domain with the signaling data obtained by association in the EPC domain according to the calling and called user identifiers in the MW interface signaling data and the user identifiers in the S1_ MME interface signaling data.

8. A system for locating an abnormal segment of call setup delay, comprising:

the time delay value acquisition module is used for acquiring time delay values of all stages in the call connection process;

the abnormal section positioning module is used for comparing the time delay value of each stage with the time delay reference value of the corresponding stage in the time delay reference table, and positioning the abnormal stage as an abnormal section according to the comparison result; the time delay reference table is used for indicating time delay reference values of all stages in the call connection process.

9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 7 are implemented when the processor executes the program.

10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.

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