CN109818816B - VoLTE calling time delay analysis method and device - Google Patents
VoLTE calling time delay analysis method and device Download PDFInfo
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Abstract
The embodiment of the invention provides a VoLTE call delay analysis method and device. The method comprises the steps of acquiring an interface data set related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identification and a time stamp; according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp; dividing a user group call ticket into a subsection ticket with a preset subsection quantity according to the sequence generated by related interface data in the VoLTE calling process; according to the time stamp of the interface data in the segmented call tickets, the time delay of each segmented call ticket is obtained, the collected interface data form the user group call ticket corresponding to the VoLTE call process, and the key segmented call ticket is extracted to be used for calculating the segmented time delay, so that a VoLTE call multi-interface association analysis system and a multi-interface association analysis tool are established, and the maintenance requirements of quickly positioning and solving the problems are met.
Description
Technical Field
The embodiment of the invention relates to the technical field of mobile communication, in particular to a VoLTE (voice over long term evolution) call delay analysis method and device.
Background
With the rapid development of mobile communication technology and mobile terminal technology, the LTE voice service, as a comparison between the conventional voice of the current mainstream language communication service and the ott (over the top), can provide lower call delay and higher voice quality, support communication services such as high-definition voice and high-definition video, and simultaneously can implement voice intercommunication with the existing network 2G/3G. Particularly, the call delay can directly reflect the user experience situation, so the end-to-end perception delay analysis is particularly important.
Most of the existing call delay analysis schemes count call delay from a single interface (a MW interface or a GM interface), determine connection delay from the time when the interface receives a first Invite message to the time when a 180-response message is received, and estimate the connection delay of the existing network from the whole.
The traditional call delay analysis can only carry out integral quality evaluation from single-interface data, and is not fine enough for the integral delay quality analysis and not accurate enough for positioning the problem of time delay.
Disclosure of Invention
The embodiment of the invention provides a VoLTE calling time delay analysis method and a VoLTE calling time delay analysis device, which are used for solving the problems that the whole quality evaluation can be only carried out from single-interface data, the whole time delay quality analysis is not fine enough, and the positioning of the time delay problem is not accurate enough in the prior art.
In a first aspect, an embodiment of the present invention provides a VoLTE call delay analysis method, including:
acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp;
according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp;
dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process;
and acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket.
In a second aspect, an embodiment of the present invention provides a VoLTE call delay analysis apparatus, including:
the acquiring unit is used for acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp;
the screening unit is used for attributing each interface data to a user group call ticket according to the user identification and the time stamp, and sequencing according to the sequence of the time stamp;
the extraction unit is used for dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process;
and the calculating unit is used for acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket.
In a third aspect, an embodiment of the present invention further provides an electronic device, including:
a processor, a memory, a communication interface, and a bus; wherein the content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication through the bus;
the communication interface is used for information transmission between communication devices of the electronic equipment;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform a method comprising:
acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp;
according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp;
dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process;
and acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket.
In a fourth aspect, an embodiment of the present invention further provides a computer program, which includes program code for performing the following operations:
the processor is used for calling the logic instructions in the memory to execute the following method:
acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp;
according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp;
dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process;
and acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket.
In a fifth aspect, an embodiment of the present invention further provides a storage medium for storing the computer program described above.
According to the VoLTE calling time delay analysis method and device provided by the embodiment of the invention, the collected interface data form the user group calling ticket corresponding to the VoLTE calling process, the key subsection ticket in the user group calling ticket is extracted to be used for calculating the subsection time delay, and a VoLTE calling multi-interface association analysis system is established on the basis of the key subsection ticket, so that a VoLTE multi-interface association analysis tool is formed, and the maintenance requirements of quickly positioning and solving the problems are met.
Drawings
Fig. 1 is a flowchart of a VoLTE call delay analysis method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a VoLTE call delay analysis apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
In order to make the objects, 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a VoLTE call delay analysis method according to an embodiment of the present invention, and as shown in fig. 1, the method includes:
step S01, acquiring an interface data set composed of interface data related to the VoLTE call process in a preset time period, wherein each interface data at least includes a user identifier and a timestamp.
The VoLTE calling service process is complex and fussy, and the signaling flow is very complex due to the fact that network elements are involved, so that the analysis of the VoLTE calling end-to-end time delay is particularly significant, the analysis of the VoLTE calling end-to-end time delay is a part of end-to-end quality analysis research, a VoLTE calling multi-interface correlation analysis system is established on the basis of the analysis, a VoLTE multi-interface correlation analysis tool is formed, and the maintenance requirements of quickly positioning and solving the problems are met.
In the embodiment of the present invention, interface data of an interface related to a VoLTE call process is first acquired within a preset time period, for example, S1-MME interface data used for connecting a Mobility Management Entity (MME) and an S1-MME of a base station eNodeB, Gx data of Gx of a Policy and Charging Rules Function (PCRF) and a System Architecture Evolution GateWay (SAEGW) is used for connecting a UE and Gm interface data of a Gm of a Session Border Controller (SBC), and the like. The interface data transmitted by each interface at least includes a user identifier and a timestamp, where the user identifier may be a mobile station international Subscriber identity (MSISDN) or an International Mobile Subscriber Identity (IMSI) used to identify a mobile phone number of a user, and the two may uniquely correspond to each other in a call process. The method for acquiring data of each interface differs according to the difference of the corresponding interface, for example, the data is acquired by a hardware acquisition card at the transmission side or the signaling information is acquired by software at the Operation and Maintenance Center (OMC) side.
And step S02, according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp.
Extracting the interface data with the same user identification, and attributing the interface data meeting a preset time threshold to the corresponding user group call ticket according to the timestamp, wherein the setting of the time threshold can be specifically set according to the time relation generated by different interface data in the VoLTE call process. And associating all interface data belonging to the same user group call ticket, adding a unique group identifier, and sequencing all the interface data in the user group call ticket according to the sequence of the timestamps. Therefore, a user group call ticket associated with end-to-end multi-interface data in a VoLTE single-user and single-service call process is obtained.
Therefore, a plurality of collected interface information can be combined into a plurality of user group call tickets, and the interface data of each user group call ticket comprises a unique group identifier.
And step S03, dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process.
According to the calling service characteristics of the LTE user, the calling scenario of the VoLTE user can be divided into a VoLTE calling VoLTE, a VoLTE calling CS (2/3G user), a VoLTE calling CS (circuit switch) (domain selection to CS), a CS calling VoLTE, a CS calling CS, and other service scenarios. According to different service scenes and the sequence of interface data generated in the process of signaling transmission in the call connection process, a plurality of segmented call tickets can be extracted from the user group call ticket according to requirements, for example: calling IMS domain call setup and called paging, etc. Specifically, according to a signaling transmission flow corresponding to each segmented call ticket, interface data corresponding to the segmented call ticket appearing first and interface data corresponding to the segmented call ticket appearing last are found in the user group call ticket, and then the found interface data between the two interface data form the segmented call ticket.
And step S04, obtaining the time delay of each section ticket according to the time stamp of the interface data in the section ticket.
According to the timestamp of the interface data in the segmented call ticket, the time delay of each segmented call ticket, that is, the timestamp difference from the initial interface data to the final interface data in the segmented call ticket, can be calculated respectively, for example: calling IMS domain call establishment delay and called paging delay, etc. At the moment, a segmented time delay analysis table of a plurality of user group call ticket can be obtained, so that the connection time delay is refined in different stages, and the time delay condition of each stage is combed and evaluated.
Through further analysis, the reason for prolonging the connection delay in the VoLTE call service process can be known, for example: due to the fact that Invite signaling is lost and retransmitted for multiple times, delay is too long, delay for establishing updating connection of LTE side bearing is too long, delay for connecting IMS network element service triggering control is lengthened, DRA message forwarding delay is too long, delay for connecting PCC domain strategy control is too long, delay for triggering intelligent network service is too long, delay for connecting between offices in a routing process is lengthened, called paging duration is too long, delay for a called domain selection process is too long, resource reservation duration is too long, triggering duration of VoLTE high-definition color ring process is too long, and the like. By analyzing the reasons, the specific time delay consumption of each stage of the VoLTE call service is gradually refined, statistics such as maximum value, minimum value, average value, intermediate value and mode are defined, the basic recommended value of time delay of each stage is established, and further the end-to-end time delay analysis standard of the VoLTE call is formed.
According to the embodiment of the invention, the collected interface data form the user group call ticket corresponding to the VoLTE call process, the key subsection ticket is extracted to be used for calculating the subsection time delay, and a VoLTE call multi-interface association analysis system is established on the basis of the subsection time delay, so that a VoLTE multi-interface association analysis tool is formed, and the maintenance requirements of quickly positioning and solving the problems are met.
Based on the above embodiment, further, the interface data set at least includes an IMS interface data subset related to an IMS domain, an EPC interface data subset related to an EPC domain, and a PCC interface data subset related to a PCC domain, and accordingly, according to the user identifier and the timestamp, each interface data is attributed to a subscriber group call ticket, and is sorted according to the sequence of the timestamp; the method specifically comprises the following steps:
according to the user identification and the timestamp, attributing each IMS interface data to an IMS domain group call ticket, attributing each EPC interface data to an EPC domain group call ticket, and attributing each PCC interface data to a PCC domain group call ticket;
and associating an IMS domain group call ticket, an EPC domain group call ticket and a PCC domain group call ticket into the user group call ticket according to the user identification and the timestamp, and adding a group identification, wherein interface data in the user group call ticket is sequenced according to the sequence of the timestamp.
According to the VoLTE call procedure, the collected interface data may be divided into IMS interface data related to an IP Multimedia SubSystem (IMS) domain, such as: gm interface data; EPC interface data related to Evolved Packet Core (EPC) domain, such as: S1-MME interface data; and PCC interface data associated with a Policy and Charging Control (PCC) domain. Then, according to the user identification and the time stamp, each IMS interface data is attributed to the corresponding IMS domain group call ticket, so that a plurality of IMS domain group call tickets are formed in the IMS interface data subset, and a unique first group identification is added to the IMS interface data in each IMS domain group call ticket; attributing each EPC interface data to a corresponding ECP domain group call ticket, thereby forming a plurality of EPC domain group call tickets in an EPC interface data subset, and adding a second group of unique identifiers to the EPC interface data in each EPC domain group call ticket; and meanwhile, each PCC interface data is attributed to a corresponding PCC domain group call ticket, so that a plurality of PCC domain group call tickets are formed in the PCC interface data subset, and a third unique group identifier is added to the PCC interface data in each PCC domain group call ticket.
And then according to the user identifiers and timestamps of all IMS interface data, EPC interface data and PCC interface data, associating the IMS domain group call ticket, the EPC domain group call ticket and the PCC domain group call ticket into a user group call ticket in the whole VoLTE call process, and replacing the first group identifier, the second group identifier and the third group identifier by using a new unique group identifier, so that the same group identifier is added to all interface data in the user group call ticket. Certainly, the interface data in the user group call ticket needs to be sorted according to the sequence of the timestamps. In the embodiments, the first group identifier, the second group identifier, the third group identifier, and the group identifier are unique identifiers different from each other, and the specific design is not particularly limited.
According to the embodiment of the invention, the collected interface data are divided into the IMS domain, the EPC domain and the PCC domain according to the characteristics of the VoLTE calling process to be respectively associated, and then the user group calling ticket corresponding to the VoLTE calling process is formed by associating the interface data with the PCC domain, so that a VoLTE calling multi-interface association analysis system is established on the basis, a VoLTE multi-interface association analysis tool is formed, and the maintenance requirements of quickly positioning and solving the problems are met.
Based on the foregoing embodiment, further, the IMS interface data subset at least includes Gm interface data, Mw interface data, ISC interface data, Mg interface data, Mj interface data, Cx interface data, and Sh interface data, where the Gm interface data, Mw interface data, ISC interface data, and Mj interface data at least include an ICID field, the Mw interface data, and Gm interface data at least include a Call-ID field, and the Mw interface data, Cx interface data, and Sh interface data at least include the user identifier, and accordingly, each IMS interface data is attributed to an IMS domain group Call ticket according to the user identifier and the timestamp, specifically:
associating the Gm interface data, the Mw interface data, the ISC interface data and the Mj interface data which are the same in the ICID fields and meet a preset first time threshold range, and respectively adding a first group of identifications;
associating the Gm interface data and the Mw interface data which have the same Call-ID fields and meet a preset second time threshold range, and adding a first group of identifications of the associated Mw interface data into the Gm interface data;
respectively correlating the Cx interface data and the Sh interface data which have the same user identification and meet a preset third time threshold range with the Mw interface data in a time-parallel manner, and respectively adding a first group of identifications of the correlated Mw interface data;
and forming an IMS domain group call ticket by all IMS interface data with the same first group identification.
The interface related to the IMS domain at least comprises Gm, Mw, ISC, Mg, Mj, Cx, Sh and the like, and the data of the interfaces are collected to obtain an IMS interface data subset, wherein the IMS interface data subset comprises Gm interface data, Mw interface data, ISC interface data, Mg interface data, Mj interface data, Cx interface data and Sh interface data.
In the actual application process, fields in various interface data collected may not be complete, so in the process of specifically associating each interface data, not only the user identifier but also some other fields are used for association, so as to increase the reliability and credibility of association. In the following embodiments, the fields used are only one of the examples, and different fields may be used according to different needs in the actual operation process.
Since the Gm interface data, the Mw interface data, the ISC interface data, and the Mj interface data at least include an Internet Credit Identity (ICID) field. The Gm interface data, the Mw interface data, the ISC interface data, and the Mj interface data, which are identical in the ICID field and satisfy a first time threshold range, for example, 12 seconds, are associated and a first set of identifications is added to these interface data. The first time threshold range and the plurality of time threshold ranges related to association in the following embodiments are also preset empirical values, and may be set according to the situation and need of the actually acquired interface data, which is not specifically limited herein.
The Gm interface data and the Mw interface data include at least a Call-ID field. Therefore, Gm interface data that is the same in the Call-ID field and meets a second time threshold range, e.g., 2 seconds, is associated with the Mw interface data. And since the Mw interface data has added the first set of identifications through the association process described above, this first set of identifications may also be added to the associated Gm interface data as well.
It should be noted that the interface data may be divided into calling side interface data and called side interface data according to the difference of the positions of the corresponding interfaces, for example: since the Gm interface data is divided into the calling Gm interface data and the called Gm interface data, and the Mw interface data is also divided into the calling Mw interface data and the called Mw interface data, the calling Gm interface data and the calling Mw interface data may be associated with each other and the called Gm interface data and the called Mw interface data may be associated with each other when the Mw interface data and the called Mw interface data are associated with each other. The interface data referred to in the following embodiments may also be associated in the same manner, but for convenience of description, the following embodiments are illustrated by way of example only with a single side.
Before carrying out correlation operation on Cx interface data and Sh interface data, firstly, removing XDR data of an LIR/LIA type message from all Cx interface data, and removing XDR data of an UDR/UDA type message from all Sh interface data. The Cx interface data and the Sh interface data having the same subscriber identity and satisfying a third time threshold range, e.g., 2 seconds, are then associated with the Mw interface data, respectively, and then the first set of identities of the Mw interface data is added to the associated Cx interface data and Sh interface data.
At this time, each interface data in the IMS interface data subset has added a corresponding first group identifier. And combining the Gm interface data, the Mw interface data, the ISC interface data, the Mg interface data, the Mj interface data, the Cx interface data and the Sh interface data with the same first group identifier to form a plurality of IMS domain group call tickets.
According to the embodiment of the invention, the collected multiple IMS interface data are correlated, then the user group call ticket corresponding to the VoLTE calling process is further formed, and a VoLTE call multi-interface correlation analysis system is established on the basis of the user group call ticket, so that a VoLTE multi-interface correlation analysis tool is formed, and the maintenance requirements of rapidly positioning and solving the problems are met.
Based on the above embodiments, further the EPC interface data subset comprises at least S1-MME interface data, S11 interface data and S6a interface data, wherein the S1-MME interface data and S6a interface data comprise at least a GUTI field, the S11 interface data and S1-MME interface data comprise at least the user identity; correspondingly, attributing each EPC interface data to an EPC domain group call ticket specifically comprises the following steps:
associating the S1-MME interface data and the S6a interface data which have the same GUTI field and meet a preset fourth time threshold range, and respectively adding a second group of identifiers;
associating S11 interface data with the S1-MME interface data, wherein the user identities are the same and meet a fifth time threshold range, and adding a second group identity of the associated S1-MME to the S11 interface data
And forming an EPC domain group call ticket by all EPC interface data with the same second group identifier.
The interfaces related to the EPC domain at least comprise S1-MME, S11, S6a and the like, and data collection is carried out on the interfaces to obtain EPC interface data subsets, wherein the EPC interface data subsets at least comprise S1-MME interface data, S11 interface data and S6a interface data.
Wherein the S1-MME interface data and S6a interface data includes at least a Globally Unique Temporary UE Identity (GUTI) field, the GUTI consisting of mcc + mnc + MME _ code + m-tmsi. And associating the S1-MME interface data and the S6a interface data which have the same GUTI field and meet a fourth time threshold range, such as 4 seconds, and respectively adding a second group of identifiers to the associated interface data.
The S1-MME interface data and the S11 interface data each include at least a user identifier, so the S11 interface data with the same user identifier and satisfying a fifth time threshold range, for example, 2 seconds, is associated with the S1-MME interface data, and the second set of identifiers already added to the S1-MME interface data is added to the associated S11 interface data.
Then, the interface data with the same second group identification in the EPC interface data subset can form a plurality of EPC domain group call tickets.
According to the embodiment of the invention, the collected data of the plurality of EPCs are correlated, then the user group call ticket corresponding to the VoLTE calling process is further formed, and a VoLTE calling multi-interface correlation analysis system is established on the basis of the user group call ticket, so that a VoLTE multi-interface correlation analysis tool is formed, and the maintenance requirements of rapidly positioning and solving the problems are met.
Based on the foregoing embodiment, further, the PCC interface data subset includes at least Rx interface data and Gx interface data, where the Rx interface data and the Gx interface data include at least a session _ id field and the user identifier; correspondingly, each PCC interface data is attributed to a PCC domain group call ticket, which specifically includes:
respectively associating Rx interface data and Gx interface data which have the same session _ id field and meet a preset sixth time threshold range into a Rx data group added with a first sub-identifier and a Gx data group added with a second sub-identifier;
if the Rx interface data and the Gx interface data which have the same user identification and meet a preset seventh time threshold range exist in an Rx data group and a Gx data group, associating the Rx data group and the Gx data group, and replacing the first sub-identification and the second sub-identification with a third group identification;
and forming a PCC domain group call ticket by the PCC interface data with the same third group identification.
The interface related to the PCC domain at least comprises Rx interface data and Gx interface data, wherein the Rx interface data and the Gx interface data at least comprise a session _ id field and a user identification.
Firstly, respectively combining Rx interface data and Gx interface data according to a session _ id field, namely combining Rx interface data with the same session _ id field and meeting a sixth time threshold, such as 6 seconds, into an Rx data group, and adding a first sub-identifier to the Rx interface data in the group; and meanwhile, combining the Gx interface data with the same session _ id field and meeting a sixth time threshold into a Gx data group, and adding a second sub-identifier to the Gx interface data in the group.
And then, comparing the Rx interface data in the Rx data group with the Gx interface data in the Gx data group, if the Rx interface data and the Gx interface data which have the same user identification and meet a preset seventh time threshold range, such as 2 seconds, exist, associating the Rx data group with the Gx data group to form a PCC domain group calling ticket, and replacing the first sub-identification or the second sub-identification of the interface data in the PCC domain group calling ticket with the third group identification.
If both the Rx interface data and the Gx interface data further include an ICID field, the ICID fields of the Rx interface data and the Gx interface data may also be compared when the Rx data group and the Gx data group are associated. And if the ICID fields are the same and the Rx interface data and the Gx interface data which meet the seventh time threshold range exist, associating the corresponding Rx data group and the Gx data group into a PCC domain group call ticket.
According to the embodiment of the invention, the collected multiple PCC interface data are correlated, then the user group call ticket corresponding to the VoLTE calling process is further formed, and a VoLTE calling multi-interface correlation analysis system is established on the basis of the user group call ticket, so that a VoLTE multi-interface correlation analysis tool is formed, and the maintenance requirements of rapidly positioning and solving the problems are met.
Based on the above embodiment, further, the associating an IMS domain group call ticket, an EPC domain group call ticket, and a PCC domain group call ticket as the subscriber group call ticket according to the subscriber identity and the timestamp, and adding a group identity, where interface data in the subscriber group call ticket is sorted according to a sequence of the timestamp, specifically:
and if the Mw interface data, the Rx interface data or the Gx interface data and the S1-MME interface data which have the same user identification and meet a preset eighth time threshold range exist in the IMS domain group call ticket, the PCC domain group call ticket and the EPC domain group call ticket, the IMS domain group call ticket, the PCC domain group call ticket and the EPC domain group call ticket are associated to form the user group call ticket, and the group identification is used for replacing the first group identification, the second group identification and the third group identification, wherein the interface data in the user group call ticket is sorted according to the sequence of the timestamps.
Through the embodiment, a plurality of IMS domain group call tickets, EPC domain group call tickets and PCC domain group call tickets are formed in the interface data set. Then, the IMS domain group call ticket, the EPC domain group call ticket and the PCC domain group call ticket belonging to the same user group call ticket are associated. In the process of correlation, the correlation may be performed after two-to-two comparison, or the comparison may be performed simultaneously, which is not specifically limited herein, and in this embodiment, one of the methods is also used for illustration.
Comparing the user identifier and the timestamp in the Mw interface data in the IMS domain group call ticket and the Rx interface data in the PCC domain group call ticket, if the Mw interface data and the Rx interface data which have the same user identifier and meet the eighth time threshold range exist, associating the IMS domain group call ticket with the PCC domain group call ticket, and simultaneously generating a new group identifier for replacing the first group identifier and the third group identifier of the interface data in the associated IMS domain group call ticket and the PCC domain group call ticket.
And then comparing the Mw interface data in the IMS domain group call ticket with the S1-MME interface data in the EPC domain group call ticket, if the Mw interface data and the S1-MME interface data which have the same user identifier and meet the eighth time threshold range exist, associating the EPC domain group call ticket with the IMS domain group call ticket, and simultaneously replacing the second group identifier with the group identifier. And combining the related PCC domain group call ticket to form a user group call ticket, wherein all interface data in the user group call ticket are sequenced according to the sequence of the time stamps.
In the above associating process of the IMS domain group call ticket, the PCC domain group call ticket, and the EPC domain group call ticket, different interface data may also be used, for example, in the associating process of the IMS domain group call ticket and the PCC domain group call ticket, Gx interface data of the PCC domain group call ticket is compared with Mw interface data in the IMS domain group call ticket. The specific interface data used may be determined according to the actual data acquisition situation, and is not specifically limited herein.
So far, a plurality of user group call tickets which are identified by group identification can be formed in the interface data set.
According to the embodiment of the invention, the related IMS domain group call ticket, EPC domain group call ticket and PCC domain group call ticket are related to form the corresponding user group call ticket in the VoLTE call process, and a VoLTE call multi-interface correlation analysis system is established on the basis of the user group call ticket, so that a VoLTE multi-interface correlation analysis tool is formed, and the maintenance requirements of quickly positioning and solving the problems are met.
Based on the above embodiment, further, the segmented ticket specifically includes a calling default bearer establishment, a calling dedicated bearer establishment, a calling IMS domain call establishment, a called ISCSF interoffice addressing, a called SCSCF addressing, a called preselection, a called IMS domain call establishment, a called paging, a called default bearer establishment, a called dedicated bearer establishment, a resource reservation, and a ringing trigger; correspondingly, the obtaining of the time delay of each segment ticket specifically includes:
obtaining calling default bearer setup time delay, calling special bearer setup time delay, calling IMS domain call setup time delay, called ISCSF interoffice addressing time delay, called SCSCF addressing time delay, called preselection time delay, called IMS domain call setup time delay, called paging time delay, called default bearer setup time delay, called special bearer setup time delay, resource reservation time delay and ringing trigger time delay.
According to the definition of the end-to-end connection delay of the VoLTE call, namely the time difference between the time when the calling terminal initiates an SIP (Session initiation protocol) INVITE message and the time when the SIP 180Ring message sent by the network side is received. When the calling terminal is in idle state, the terminal will first initiate random access message, Service Request flow, return to RRC connected state, and then send SIP INVITE message to establish session connection because there is Service to transmit. At this time, the VoLTE call connection delay calculation is a time difference between the time when the calling terminal initiates the Service Request message and the time when the SIP 180Ring message sent by the network side is received.
The obtained user group call ticket for calling VoLTE by VoLTE may be divided into a plurality of segmented tickets, which are exemplified by only the following 12 segmented tickets in this embodiment, which are called default bearer establishment, calling dedicated bearer establishment, calling IMS domain call establishment, called ISCSF interoffice addressing, called SCSCF addressing, called IMS domain call establishment, called domain selection, called paging, called default bearer establishment, called dedicated bearer establishment, resource reservation, and ring triggering, respectively.
Then, according to the time stamp of the interface data in the segmented call ticket, calculating the 12 segmented call tickets to obtain 12 segmented time delays: calling default bearer setup time delay, calling dedicated bearer setup time delay, calling IMS domain call setup time delay, called ISCSF interoffice addressing time delay, called SCSCF addressing time delay, called preselection time delay, called IMS domain call setup time delay, called paging time delay, called default bearer setup time delay, called dedicated bearer setup time delay, resource reservation time delay, and ringing trigger time delay.
Wherein each stage is as follows:
(1) caller default bearer establishment
Mainly refers to a default bearer process that a calling user initiates a VoLTE call in an LTE idle state and establishes or recovers QCI-5. The calling user sends an Invite message to indicate that the setup of the default bearer of the calling is completed, and the segmented delay can evaluate the delay length of the initial preparation process in the LTE network after the user initiates the call.
(2) Caller-specific bearer establishment
The method mainly refers to that after a calling SBC receives a request for establishing a VoLTE session of a calling subscriber, a resource reservation Precondition is started, and a special bearer establishment process with QCI (quaternary ammonium identity) of 1/2 is initiated. The segment delay CAN evaluate an IP-CAN (IP-Connectivity access network) session modification delay caused by the establishment of a PCC (Application Function, AF) session at the calling side, and a reaction process delay of a mobile terminal at the calling side to the establishment of a dedicated bearer.
(3) Calling IMS domain call establishment
The method mainly refers to that a Proxy Session Control Function (PCSCF) of a calling side receives an Invite message from a Gm interface, and the SIP signaling message begins to carry out service triggering process time delay in an IMS domain core network until a last Application Server (AS) returns the Invite message. The segmented time delay evaluates the total time delay of the initial processing process of the SIP signaling of the calling IMS domain on the whole, the IMS domain establishment time delay has larger difference according to different signed services of users, and the processing performance of ISBG and AS to the SIP signaling message can be inspected.
The difference between the minimum time delay and the maximum time delay established in the calling IMS domain is that the time delay of the network element for processing and forwarding the SIP signaling in the interaction process of several interfaces of the IMS domain is different, the time delay of the network element for processing and forwarding the SIP signaling message can be about 10ms in the normal condition, and can reach dozens of milliseconds in the extreme condition, and the time delay is changed greatly due to the complicated signaling process of the IMS domain
(4) Called ISCSF interoffice addressing
Mainly refers to the signaling routing process time delay between the calling service Session Control Function (SCSCF) and the called negotiation Session Control Function (ICSCF). The segmented delay can evaluate the delay of the process of inquiring the DNS routing ICSCF and the transmission delay of a local interoffice or long-distance signaling network.
(5) Called SCSCF addressing
Mainly refers to the time delay of the signaling route from the called ICSCF to the called SCSCF. Inquiring HSS to select SCSCF process time delay and calling and called SCSCF interoffice signaling processing time delay.
(6) Called IMS domain call establishment
The opposite process to the calling IMS domain call setup delay refers to the delay of transferring Invite through the called Gm interface until the Invite is transferred out after the Invite initial session message reaches the called SCSCF and the subscription service trigger control is performed in the called IMS core network.
(7) Called domain selection delay
And the MMTel AS/SCC AS sends a UDR message to the called party fusion HLR/HSS to request to acquire T-ADS information of the called party to the called party fusion HLR/HSS and returns the T-ADS information to the called party MMTel AS/SCC AS through the UDA message according to the IDA message returned by the called party MME. In the process, the time delay of the called domain selection process is established for statistical analysis of the time delay of the called domain selection. The phase delay is included in the called IMS domain setup delay.
(8) Called paging delay
The EPC of the called side sends an Invite message to the called user in an idle state, and the EPC of the called side triggers a paging process to page the called user in the idle state because the called user is in the idle state. The segmented delay can evaluate the LTE paging delay of the VoLTE call and evaluate whether the paging mechanism of the LTE system is reasonable.
(9) Called default bearer establishment
The method mainly refers to that after a called user receives a paging message, the called user triggers RRC connection, a security mode and establishes or recovers the default bearing process time delay of QCI (quaternary ammonium interference) 5. The segmented delay can evaluate the delay length of the LTE network where the called user is located to the VoLTE call starting preparation process.
(10) Called dedicated bearer establishment
After receiving the message that the 183 session of the called party is processing, the called SBC starts the Precondition and initiates the process of establishing the dedicated bearer with QCI 1 and QCI 2. The segmented time delay CAN evaluate the modification time delay of the IP-CAN session caused by the AF session establishment of the PCC domain of the called side and the time delay of the reaction process of the called mobile phone terminal to the establishment of the special bearer.
(11) Resource reservation
The called side IMS network returns a message carrying SDP media resource negotiation content to the calling side 183 until the calling side receives a delay procedure of a media resource negotiation procedure completion message. The segmented time delay can evaluate the time delay of the media resource reservation process of the calling side and the called side, the processing and forwarding time delay of each network element in VoLTE to the media resource negotiation process, the reaction time delay of the terminal to the media resource negotiation process and the time delay of the temporary response reliability confirmation process
(12) Ring trigger
After the media negotiation resource reservation is completed, the called mobile phone triggers 180 ringing messages until the calling mobile phone receives the ringing messages. The segmented time delay mainly considers the time delay length of the color ring triggering process, and if no color ring exists, the segment of time delay is usually very short.
The embodiment of the invention divides the user group call ticket corresponding to the VoLTE call process into a plurality of subsection tickets and calculates the time delay of each subsection ticket, and establishes a VoLTE call multi-interface association analysis system on the basis of the subsection tickets to form a VoLTE multi-interface association analysis tool, thereby meeting the maintenance requirements of quickly positioning the problem and solving the problem.
Fig. 2 is a schematic structural diagram of a VoLTE call delay analysis apparatus according to an embodiment of the present invention, and as shown in fig. 2, the apparatus includes: an acquisition unit 10, a screening unit 11, an extraction unit 12 and a calculation unit 13, wherein,
the acquiring unit 10 is configured to acquire an interface data set composed of interface data related to a VoLTE call process in a preset time period, where each interface data at least includes a user identifier and a timestamp; the screening unit 11 is configured to attribute each interface data to a user group call ticket according to the user identifier and the timestamp, and sort the interface data according to a sequence of the timestamps; the extraction unit 12 is configured to divide the user group call ticket into a preset number of segment tickets according to a sequence generated by the relevant interface data in the VoLTE call process; the calculating unit 13 is configured to obtain a time delay of each segment ticket according to the timestamp of the interface data in the segment ticket. Specifically, the method comprises the following steps:
the obtaining unit 10 first obtains interface data of an interface related to the VoLTE call process, such as S1-MME interface data, Gx interface data, Gm interface data, and the like, in a preset time period. The interface data transmitted by each interface at least comprises a user identification and a time stamp, wherein the user identification can be MSISDN or IMSI used for identifying the mobile phone number of the user, and the MSISDN or IMSI can be uniquely corresponding in a calling process. The acquiring unit 10 sends all the received interface data to the screening unit 11.
The screening unit 11 extracts the interface data with the same user identifier, and then classifies the interface data meeting a preset time threshold into a user group call ticket according to the timestamp, wherein the setting of the time threshold is specifically set according to a time relation generated by different interface data in the VoLTE call process. And associating all interface data belonging to the user group call ticket, adding a unique group identifier, and sequencing all the interface data in the user group call ticket according to the sequence of the timestamps. Therefore, a user group call ticket associated with end-to-end multi-interface data in a VoLTE single-user and single-service call process is obtained.
Therefore, the screening unit 11 can combine a large amount of collected interface information into a plurality of user group call tickets, and the interface data of each user group call ticket comprises a unique group identifier. The screening unit 11 sends the obtained call tickets of all the user groups to the extracting unit 12.
The extracting unit 12 can extract a plurality of segmented call tickets from the user group call ticket according to the call service characteristics of the LTE user, different service scenarios, and the sequence of interface data generated in the signaling transmission process during the call connection process, and then send all the user group call tickets and the segmented call segments to the calculating unit 13.
The calculating unit 13 can calculate the time delay of each segment call ticket according to the time stamp of the interface data in the segment call ticket, that is, the time stamp difference from the initial interface data to the ending interface data in the segment call ticket. At the moment, a segmented time delay analysis table of a plurality of user group call ticket can be obtained, so that the connection time delay is refined in different stages, and the time delay condition of each stage is combed and evaluated.
The apparatus provided in the embodiment of the present invention is configured to execute the method, and the functions of the apparatus refer to the method embodiment specifically, and detailed method flows thereof are not described herein again.
According to the embodiment of the invention, the collected interface data form the user group call ticket corresponding to the VoLTE call process, the key subsection ticket is extracted to be used for calculating the subsection time delay, and a VoLTE call multi-interface association analysis system is established on the basis of the subsection time delay, so that a VoLTE multi-interface association analysis tool is formed, and the maintenance requirements of quickly positioning and solving the problems are met.
Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the invention. As shown in fig. 3, the electronic device includes: a processor (processor)601, a memory (memory)602, and a bus 603;
wherein, the processor 601 and the memory 602 complete the communication with each other through the bus 603;
the processor 601 is configured to call program instructions in the memory 602 to perform the methods provided by the above-mentioned method embodiments, for example, including: acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp; according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp; dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process; and acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket.
Further, embodiments of the present invention disclose a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which when executed by a computer, the computer is capable of performing the methods provided by the above-mentioned method embodiments, for example, comprising: acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp; according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp; dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process; and acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket.
Further, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions, which cause the computer to perform the method provided by the above method embodiments, for example, including: acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp; according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp; dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process; and acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the electronic device and the like are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A VoLTE call delay analysis method is characterized by comprising the following steps:
acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp; wherein the interface data set at least comprises an IMS interface data subset related to an IMS domain, an EPC interface data subset related to an EPC domain and a PCC interface data subset related to a PCC domain;
according to the user identification and the time stamp, attributing each interface data to a user group call ticket, and sequencing according to the sequence of the time stamp;
dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process;
acquiring the time delay of each sectional call ticket according to the time stamp of the interface data in the sectional call ticket;
wherein, according to the user identification and the time stamp, each interface data belongs to the user group call ticket, and is sequenced according to the sequence of the time stamp; the method specifically comprises the following steps:
according to the user identification and the timestamp, attributing each IMS interface data to an IMS domain group call ticket, attributing each EPC interface data to an EPC domain group call ticket, and attributing each PCC interface data to a PCC domain group call ticket;
and associating an IMS domain group call ticket, an EPC domain group call ticket and a PCC domain group call ticket into the user group call ticket according to the user identification and the timestamp, and adding a group identification, wherein interface data in the user group call ticket is sequenced according to the sequence of the timestamp.
2. The method according to claim 1, wherein the subset of IMS interface data comprises at least Gm, Mw, ISC, Mg, Mj, Cx, and Sh interface data, wherein the Gm, Mw, ISC, and Mj interface data comprises at least an ICID field, the Mw and Gm interface data comprises at least a Call-ID field, the Mw, Cx, and Sh interface data comprises at least the subscriber identity, and wherein each IMS interface data is accordingly attributed to an IMS domain group Call ticket according to the subscriber identity and the timestamp, in particular:
associating the Gm interface data, the Mw interface data, the ISC interface data and the Mj interface data which are the same in the ICID fields and meet a preset first time threshold range, and respectively adding a first group of identifications;
associating the Gm interface data and the Mw interface data which have the same Call-ID fields and meet a preset second time threshold range, and adding a first group of identifications of the associated Mw interface data into the Gm interface data;
respectively correlating the Cx interface data and the Sh interface data which have the same user identification and meet a preset third time threshold range with the Mw interface data in a time-parallel manner, and respectively adding a first group of identifications of the correlated Mw interface data;
and forming an IMS domain group call ticket by all IMS interface data with the same first group identification.
3. The method of claim 2, wherein the subset of EPC interface data comprises at least S1-MME interface data, S11 interface data, and S6a interface data, wherein the S1-MME interface data and S6a interface data comprise at least a GUTI field, and wherein the S11 interface data and S1-MME interface data comprise at least the user identity; correspondingly, attributing each EPC interface data to an EPC domain group call ticket specifically comprises the following steps:
associating the S1-MME interface data and the S6a interface data which have the same GUTI field and meet a preset fourth time threshold range, and respectively adding a second group of identifiers;
associating S11 interface data with the S1-MME interface data, wherein the user identities are the same and meet a fifth time threshold range, and adding a second group identity of the associated S1-MME to the S11 interface data
And forming an EPC domain group call ticket by all EPC interface data with the same second group identifier.
4. The method of claim 3, wherein the PCC interface data subset comprises at least Rx interface data and Gx interface data, wherein the Rx interface data and Gx interface data comprise at least a session _ id field and the user identification; correspondingly, each PCC interface data is attributed to a PCC domain group call ticket, which specifically includes:
respectively associating Rx interface data and Gx interface data which have the same session _ id field and meet a preset sixth time threshold range into a Rx data group added with a first sub-identifier and a Gx data group added with a second sub-identifier;
if the Rx interface data and the Gx interface data which have the same user identification and meet a preset seventh time threshold range exist in an Rx data group and a Gx data group, associating the Rx data group and the Gx data group, and replacing the first sub-identification and the second sub-identification with a third group identification;
and forming a PCC domain group call ticket by the PCC interface data with the same third group identification.
5. The method according to claim 4, wherein the associating an IMS domain group call ticket, an EPC domain group call ticket, and a PCC domain group call ticket as the HSS according to the user ID and the timestamp, and adding a group ID, wherein interface data in the HSS are sorted according to a sequence of the timestamp, specifically:
and if MW interface data, Rx interface data or Gx interface data and S1-MME interface data exist in the IMS domain group call ticket, the PCC domain group call ticket and the EPC domain group call ticket, wherein the user identifications are the same and meet a preset eighth time threshold range, the IMS domain group call ticket, the PCC domain group call ticket and the EPC domain group call ticket are associated to form the user group call ticket, and the group identification is used for replacing the first group identification, the second group identification and the third group identification, wherein the interface data in the user group call ticket are sequenced according to the sequence of the timestamps.
6. The method according to any of claims 1-5, wherein the segmented ticket specifically comprises a calling default bearer setup, a calling dedicated bearer setup, a calling IMS domain call setup, a called ISCSF interoffice addressing, a called SCSCF addressing, a called preselection, a called IMS domain call setup, a called paging, a called default bearer setup, a called dedicated bearer setup, a resource reservation, a ringing trigger; correspondingly, the obtaining of the time delay of each segment ticket specifically includes:
obtaining calling default bearer setup time delay, calling special bearer setup time delay, calling IMS domain call setup time delay, called ISCSF interoffice addressing time delay, called SCSCF addressing time delay, called preselection time delay, called IMS domain call setup time delay, called paging time delay, called default bearer setup time delay, called special bearer setup time delay, resource reservation time delay and ringing trigger time delay.
7. A VoLTE call delay analysis device, comprising:
the acquiring unit is used for acquiring an interface data set consisting of interface data related to a VoLTE calling process in a preset time period, wherein each interface data at least comprises a user identifier and a timestamp; wherein the interface data set at least comprises an IMS interface data subset related to an IMS domain, an EPC interface data subset related to an EPC domain and a PCC interface data subset related to a PCC domain;
the screening unit is used for attributing each interface data to a user group call ticket according to the user identification and the time stamp, and sequencing according to the sequence of the time stamp;
the extraction unit is used for dividing the user group call ticket into the subsection tickets with the preset subsection quantity according to the sequence generated by the relevant interface data in the VoLTE call process;
the computing unit is used for obtaining the time delay of each section ticket according to the time stamp of the interface data in the section ticket;
wherein, the screening unit is specifically configured to:
according to the user identification and the timestamp, attributing each IMS interface data to an IMS domain group call ticket, attributing each EPC interface data to an EPC domain group call ticket, and attributing each PCC interface data to a PCC domain group call ticket;
and associating an IMS domain group call ticket, an EPC domain group call ticket and a PCC domain group call ticket into the user group call ticket according to the user identification and the timestamp, and adding a group identification, wherein interface data in the user group call ticket is sequenced according to the sequence of the timestamp.
8. An electronic device, comprising a memory and a processor, wherein the processor and the memory communicate with each other via a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 6.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 6.
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| CN110324789B (en) * | 2019-07-10 | 2021-05-07 | 武汉绿色网络信息服务有限责任公司 | Method and device for acquiring VoLTE user position track information |
| CN112543173B (en) * | 2019-09-23 | 2022-03-18 | 维沃移动通信有限公司 | IMS information transmission method, terminal, device and equipment |
| CN110856128B (en) * | 2019-10-17 | 2021-07-30 | 武汉绿色网络信息服务有限责任公司 | Method and device for judging VoLTE call intercommunication network scene |
| CN110933234B (en) * | 2019-11-18 | 2021-04-27 | 武汉绿色网络信息服务有限责任公司 | Automatic delimiting method and device for VoLTE call quality problem |
| CN113381867B (en) * | 2020-02-25 | 2023-11-03 | 中国移动通信集团福建有限公司 | Communication delay cause determining method and device, electronic equipment and storage medium |
| CN114205278B (en) * | 2020-08-31 | 2023-09-19 | 中国移动通信集团浙江有限公司 | VoLTE voice service quality evaluation method, voLTE voice service quality evaluation device, computing equipment and storage medium |
| CN115250441B (en) * | 2021-04-28 | 2023-08-15 | 中国移动通信集团河北有限公司 | Method, device, equipment and medium for determining voice fallback time delay information |
| CN113490202A (en) * | 2021-07-23 | 2021-10-08 | 恒安嘉新（北京）科技股份公司 | Method and device for synthesizing voice call ticket, computer equipment and storage medium |
| CN113890943A (en) * | 2021-11-09 | 2022-01-04 | 微位（深圳）网络科技有限公司 | Service stability analysis method, device, equipment and medium based on call delay |
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