CN109936854B - Method and device for triggering SRVCC switching - Google Patents

Abstract

The embodiment of the invention discloses a method and a device for triggering SRVCC switching, which cover various scenes, can more accurately switch the SRVCC of a user at the voice perception edge to a CS domain aiming at a single user, and improve the user perception. The method comprises the following steps: monitoring whether the user terminal successfully establishes the VOLTE voice call or not based on the S/P-GW, and if the user terminal successfully establishes the VOLTE voice call, acquiring an MOS value of the VOLTE voice call in real time based on an S1-U port of the S/P-GW; if the MOS value is judged to be smaller than a preset first value, a B1 measurement report which is reported to a user terminal of a base station eNodeB by the user terminal and is reported to the user terminal of the base station eNodeB by the user terminal is obtained based on an S1-MME port of the MME, if the MOS value is judged to be smaller than the first value in a preset time period and the level value of at least one cell in the B1 measurement report meets a preset B1 threshold, a cell with the largest level value is determined, an SRVCC switching process is initiated to the user terminal based on the cell with the largest level value, and voice services with VOLTE voice uplink and downlink MOS difference are transferred to a CS domain.

Description

Method and device for triggering SRVCC switching

technical field

Embodiments of the present invention relate to the field of communications, and in particular, to a method and an apparatus for triggering SRVCC switching.

Background technique

The existing eSRVCC (Enhanced Single Radio Voice Call Continuity) handover process is implemented in three parts:

1. Switch judgment:

The eNodeB (Evolved Node B, the evolved Node B, is the name of the base station in the long-term evolution LTE network) according to the measurement report uploaded by the UE (User Equipment, user equipment) (including E-UTRAN (Evolved UMTSTerrestrial Radio Access Network, Evolved Universal Mobile Access Network) Cell signal measurement report under the communication system Terrestrial Radio Access Network) network and adjacent UTRAN (UMTS Terrestrial Radio Access Network, Universal Mobile Telecommunications System Terrestrial Radio Access Network)/GERAN (GSM EDGE Radio Access Network, Global System for Mobile Communications GSM /Enhanced data rate for GSM evolution technology (EDGE wireless communication network) network signal measurement report), to determine whether to perform access network handover.

2. Switching process:

a) After judging that the access network needs to be switched, the eNodeB sends a handover required message to the source MME (Mobility Management Entity, mobility control plane entity). According to the eSRVCC indication in the message, the MME separates the voice bearer with QCI (QoSClass Identifier)=1 from other bearers, and selects an SRVCC IWF (Interworking Function) according to the Target ID (target identifier) in the handover request message. , interworking function), initiate a PS to CS Request (packet-switched PS to CS request) switching request to it through the Sv interface. The message carries the C-MSISDN (the user number of the CS domain where the user is located) and the STN-SR number previously allocated to the UE by the ATCFATCF (Access Transfer Control Function, access transfer control function).

b) After the SRVCC IWF receives the handover request message, it finds the target MSCServer (that is, the MSC Server to which the handover target belongs) according to the Target ID carried in the message, and then executes the handover process between the SRVCC IWF and the target MSC Server. After the bearer of the UTRAN/GERAN network on the target side is established, the SRVCC IWF establishes the bearer of the SRVCCIWF and the ATCF/ATGW (Access Transfer Gateway, Access Transfer Gateway) according to the STN-SR number.

c) The ATCF updates the bearer information on the ATGW according to the session to be switched by the associated user according to the C-MSISDN, switches the local media plane to the bearer of the UTRAN/GERAN network, and notifies the SCC AS (Service Centralization and Continuity Application Server) that the service is centralized and continuous application server) to update the access domain information of the UE.

3. Processing after switching:

Since the user has not been attached to the UTRAN/GERAN network before, after the handover is completed and before the call is released, the SRVCC IWF initiates a location update to the CS domain HLR (Home Location Register) on behalf of the user to ensure that subsequent calls can be correctly routed to the called party.

The existing technical solutions for SRVCC handover mainly include coverage-based and quality-based, and the implementation methods are as follows:

1. SRVCC handover based on voice quality (Huawei as an example)

Use the QCI1 packet loss rate to determine whether a voice quality user implements eSRVCC. The QCI1 packet loss rate threshold for voice quality switching and the voice quality packet loss evaluation period can be configured. Observe that the length of the voice service packet loss rate measurement period meets the requirements before deciding whether to allow voice Poor quality user triggers switching function based on voice quality.

The relevant parameters involved are as follows:

2. Coverage-based SRVCC handover (Huawei as an example)

If the measured value of RSRP (Reference Signal Receiving Power) of the serving cell is lower than the A2RSRP trigger threshold of the different system, an A2 event is reported. Threshold InterRatHoGeranB1Thd, UE will report B2 event to trigger coverage-based SRVCC handover. For coverage-based GERAN handover, if the B2 event is used, a reasonable threshold needs to be configured. The lower the threshold (signal quality of the serving cell) of the B2 event, the more difficult it is to trigger the B2 event, and it is easy to cause a late handover; the higher the threshold, the easier the B2 event is to trigger and the easier it is to initiate GERAN handover.

The relevant parameters involved are as follows:

The above content describes the existing quality-based and coverage-based SRVCC handover methods and principles. The wireless quality is mainly measured by the packet loss rate and the coverage level value RSRP, so as to determine whether the terminal should SRVCC to GSM. The existing algorithm mainly uses the indicators on the wireless side as the basis for SRVCC handover, which cannot accurately evaluate the actual voice perception of the user, and has certain defects:

The current coverage-based SRVCC handover algorithm is mainly implemented for the low-quality problem of the terminal in the downlink low-level environment. However, it does not solve the SRVCC switching problem in scenarios such as high level & low quality, low level & high quality, good downlink coverage/good quality but weak uplink coverage/poor quality. There are defects in the algorithm, such as a call that the user actually perceives is SRVCC to the CS domain, while the call that the user actually perceives is poor resides in the IMS (IP Multimedia Core Network Subsystem, Internet Protocol Multimedia Subsystem) domain for a long time.

The current quality-based SRVCC handover algorithm is mainly implemented for the low quality problem of the terminal in the high packet loss environment. However, the packet loss rate cannot reflect the actual perception of the user. High latency, high jitter, and high error block will all cause a decrease in user perception. There are flaws in the algorithm, the user perception cannot be accurately evaluated, and the calls with poor user perception may stay in the IMS domain for a long time.

In addition, whether it is a coverage-based or quality-based SRVCC handover algorithm, the algorithm parameter setting is based on the cell dimension, and all users in the cell share a set of algorithm parameters. However, the wireless environments where different users are located are different, which determines that the SRVCC standards should be different and cannot be generalized. The existing algorithm has defects, cannot accurately evaluate the call perception of each user, and cannot accurately set the optimal timing of SRVCC for each user.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present invention provide a method and device for triggering SRVCC switching, covering various scenarios, and for a single user, the SRVCC of a user at the edge of speech perception can be more accurately switched to the CS domain, improving user perception.

On the one hand, an embodiment of the present invention provides a method for triggering SRVCC handover, including:

Based on the S/P-GW (S-GW is the serving gateway, and P-GW is the packet data network gateway), monitor whether the user terminal successfully establishes a VOLTE (Voice over LTE, Voice over LTE) voice call, if the user terminal successfully establishes For a VOLTE voice call, obtain the MOS value (MeanOpinion Score, average opinion value) of this VOLTE voice call in real time based on the S1-U port of the S/P-GW;

If it is determined that the MOS value is less than the preset first value, the S1-MME port of the MME obtains the information reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB. In the B1 measurement report of the user terminal, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report meets the preset B1 threshold , then determine the cell with the largest level value, initiate an SRVCC handover process to the user terminal based on the cell with the largest level value, and transfer the VOLTE voice uplink and downlink MOS differentiated voice services to the CS domain, wherein the base station The level value of each cell in the B1 measurement report reported by the eNodeB meets the preset B1 threshold

On the other hand, an embodiment of the present invention provides a device for triggering SRVCC handover, the device is connected to the S1-U port of the S/P-GW and the S1-MME port of the MME, including:

The obtaining unit is used to monitor whether the user terminal successfully establishes a VOLTE voice call based on the S/P-GW, and if the user terminal successfully establishes a VOLTE voice call, obtain the MOS of this VOLTE voice call in real time based on the S1-U port value;

A switching unit, configured to obtain, based on the S1-MME port, the information reported by the eNodeB of the base station connected to the user terminal and reported by the user terminal to the In the B1 measurement report of the user terminal of the base station eNodeB, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report satisfies the The preset B1 threshold determines the cell with the largest level value, initiates an SRVCC handover process to the user terminal based on the cell with the largest level value, and transfers the VOLTE voice uplink and downlink MOS differentiated voice services to the CS domain, Wherein, the level values of each cell in the B1 measurement report reported by the base station eNodeB all meet the preset B1 threshold.

In a third aspect, an embodiment of the present invention provides a 2/4G converged networking network, including an S/P-GW and an MME, and further including: the device according to any one of the foregoing.

In a fourth aspect, an embodiment of the present invention provides an electronic device, including: a processor, a memory, a bus, and a computer program stored in the memory and running on the processor;

Wherein, the processor and the memory communicate with each other through the bus;

The above method is implemented when the processor executes the computer program.

In a fifth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, where a computer program is stored on the storage medium, and the computer program implements the foregoing method when executed by a processor.

In the method and device for triggering SRVCC handover and the 2/4G converged networking network provided by the embodiments of the present invention, after the user successfully establishes a VOLTE call, through threshold setting, the MOS value of the VOLTE voice call and the B1 of the user terminal are set. The measurement report is evaluated, and within a preset time period, the MOS value is less than the preset first value, and the level value of at least one cell in the B1 measurement report meets the preset B1 threshold, it is determined to determine The cell with the largest level value initiates the SRVCC handover process to the user terminal based on the cell with the largest level value, and transfers the voice service of the VOLTE voice uplink and downlink MOS differential to the CS domain to ensure that when the quality of the user's call is poor, it can be timely. SRVCC is switched to CS domain. Compared with the prior art, this solution covers various scenarios. For a single user, the SRVCC of a user at the edge of speech perception can be switched to CS domain more accurately to improve user perception.

Description of drawings

1 is a schematic flowchart of an embodiment of a method for triggering an SRVCC handover according to the present invention;

FIG. 2 is an architecture diagram of an embodiment of a 2/4G converged networking network according to the present invention;

3 is a schematic structural diagram of an embodiment of an apparatus for triggering SRVCC switching according to the present invention;

FIG. 4 is a schematic diagram of the physical structure of an electronic device provided by 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 described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are disclosed. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the embodiments of the present invention.

Referring to FIG. 1, this embodiment discloses a method for triggering SRVCC switching, including:

S1. Monitor whether the user terminal successfully establishes a VOLTE voice call based on the S/P-GW. If the user terminal successfully establishes a VOLTE voice call, obtain real-time data of the VOLTE voice call based on the S1-U port of the S/P-GW. MOS value;

S2. If it is determined that the MOS value is less than the preset first value, obtain the information reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB based on the S1-MME port of the MME. In the B1 measurement report of the user terminal, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report satisfies the preset value B1 threshold, then determine the cell with the largest level value, initiate an SRVCC handover process to the user terminal based on the cell with the largest level value, and transfer the voice service of the VOLTE voice uplink and downlink MOS differential to the CS domain, where all the The level values of each cell in the B1 measurement report reported by the base station eNodeB all meet the preset B1 threshold.

It should be noted that, if it is determined in step S2 that the MOS value is not less than the first value, the entire process jumps to step S1.

In the method for triggering SRVCC handover provided by the embodiment of the present invention, after the user successfully establishes a VOLTE call, the MOS value of the current VOLTE voice call and the B1 measurement report of the user terminal are evaluated through threshold setting. When the MOS value is less than the preset first value, and the level value of at least one cell in the B1 measurement report meets the preset B1 threshold, the cell with the largest level value is determined, and based on the level The cell with the largest value initiates the SRVCC handover process to the user terminal, and transfers the voice services of the VOLTE voice uplink and downlink MOS differential to the CS domain, ensuring that when the quality of the user's call is poor, the SRVCC can be switched to the CS domain in time. Compared with the existing This solution covers various scenarios. For a single user, the SRVCC of the user at the edge of speech perception can be switched to the CS domain more accurately, improving user perception.

On the basis of the foregoing method embodiments, the S/P-GW-based monitoring of whether the user terminal successfully establishes a VOLTE voice call may include:

Determine whether the S-GW sends or receives the ACK (Acknowledgement, confirmation character) response SIP (Session Initiation Protocol, Session Initiation Protocol) response SIP signaling, if sent or received, it is determined that the user terminal successfully established the VOLTE voice call.

On the basis of the foregoing method embodiments, the real-time acquisition of the MOS value of the VOLTE voice call based on the S1-U port of the S/P-GW may include:

Monitoring is started, the voice data packets of the user terminal are collected in real time from the S1-U of the S/P-GW, and the MOS value is calculated according to the voice data packets.

In this embodiment, calculating the MOS value according to the voice data packet belongs to the prior art, and details are not described herein again.

On the basis of the foregoing method embodiments, the MME-based S1-MME port obtains B1 measurements of the user terminal reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB Reports, which can include:

Instruct the MME to issue instructions to the base station eNodeB through the S1-MME port, and receive B1 measurement reports reported by the user terminal through the base station eNodeB and the MME in sequence, wherein the base station eNodeB is based on the B1 measurement report. The instruction sends a B1 measurement control instruction to the user terminal, and the B1 measurement control instruction is used to instruct the user terminal to report a B1 measurement report, and the level values of each cell in the B1 measurement report meet the B1 threshold, so The user terminal reports its B1 measurement report to the base station eNodeB according to the B1 measurement control instruction. If the base station eNodeB checks and learns that the level values of each cell in the B1 measurement report meet the B1 threshold, it will pass the B1 measurement report. The MME reports the B1 measurement report.

In this embodiment, the specific process of acquiring the B1 measurement report of the user terminal is: sending a notification to the MME through the S1-MME port, and after receiving the notification, the MME sends a notification to the user according to the notification. The base station eNodeB to which the terminal is connected issues an instruction, and after receiving the instruction, the base station eNodeB issues a B1 measurement control instruction to the user terminal according to the instruction, and after the user terminal receives the B1 measurement control instruction, Report its B1 measurement report to the base station eNodeB according to the B1 measurement control instruction. If the base station eNodeB checks and learns that the level values of each cell in the B1 measurement report meet the B1 threshold, it will report it through the MME. The B1 measurement report, wherein the B1 measurement control instruction is used to instruct the user terminal to report a B1 measurement report, the level values of each cell in the B1 measurement report meet the B1 threshold, and the user terminal receives the B1 measurement report. After the B1 measurement control instruction, the level value of each cell is checked, and the cells whose level values all meet the B1 threshold are determined, and a B1 measurement report is generated according to these cells. After the base station eNodeB receives the B1 measurement report reported by the user terminal, it will check whether there is a false alarm in the B1 measurement report reported by the user terminal. If the level values all meet the B1 threshold, the B1 measurement report will be reported through the MME. In addition, it should be noted that if in the process of reporting the B1 measurement report, if it is detected that the current uplink/downlink MOS score is higher than the first value, the MME will be instructed through the S1-MME port to The base station eNodeB issues an instruction to stop the user terminal from reporting the B1 measurement. This process is similar to the previous instruction issuing process. The difference is that the user terminal does not send its B1 measurement report, but stops sending its B1 measurement report. Measurement report, the specific process will not be repeated here.

On the basis of the foregoing method embodiments, the method may further include:

It is judged whether the S-GW sends or receives the on-hook SIP signaling, and if it is sent or received, the process ends.

In this embodiment, the on-hook SIP signaling includes a BYE message and a cancel message. If the S-GW sends or receives an on-hook SIP signaling, it is determined that the user successfully cancels or interrupts the VOLTE voice call. At this time, the evaluation of the user's actual call perception is stopped during normal on-hook or abnormal release.

Referring to FIG. 2, this embodiment discloses a device for triggering SRVCC handover, the device is connected to the S1-U port of the S/P-GW and the S1-MME port of the MME, including:

Obtaining unit 1 is used to monitor whether the user terminal successfully establishes a VOLTE voice call based on the S/P-GW. If the user terminal successfully establishes a VOLTE voice call, obtain real-time information of the VOLTE voice call based on the S1-U port. MOS value;

The switching unit 2 is configured to obtain, based on the S1-MME port, the information reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the In the B1 measurement report of the user terminal of the base station eNodeB, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report is all If the preset B1 threshold is met, the cell with the largest level value is determined, and the SRVCC switching process is initiated to the user terminal based on the cell with the largest level value, and the voice service of the VOLTE voice uplink and downlink MOS differential is transferred to the CS domain , wherein the level values of each cell in the B1 measurement report reported by the base station eNodeB all meet the preset B1 threshold.

As shown in FIG. 2 , the device for triggering SRVCC handover is installed between the S/P-GW and the MME, and is connected to the S1-U port of the S/P-GW and the S1-MME port of the MME. Specifically, after the mobile user establishes a VOLTE voice call (that is, first establishes a bearer link with the mobile cellular network, registers to the IMS domain, establishes the bearer of QCI5, and needs to establish a dedicated bearer of QCI1 at the same time), the acquisition unit 1 is based on the S /P-GW monitors whether the user terminal successfully establishes a VOLTE voice call, and if the user terminal successfully establishes a VOLTE voice call, obtains the MOS value of this VOLTE voice call in real time based on the S1-U port; If the MOS value is less than the preset first value, the B1 of the user terminal reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB is obtained based on the S1-MME port. Measurement report, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report meets the preset B1 threshold, then determine The cell with the largest level value initiates an SRVCC handover process to the user terminal based on the cell with the largest level value, and transfers the VOLTE voice uplink and downlink MOS differentiated voice services to the CS domain, wherein the B1 reported by the base station eNodeB The level values of each cell in the measurement report meet the preset B1 threshold.

The device for triggering SRVCC handover provided by the embodiment of the present invention evaluates the MOS value of the VOLTE voice call and the B1 measurement report of the user terminal through the threshold setting after the user successfully establishes a VOLTE call. When the MOS value is less than the preset first value, and the level value of at least one cell in the B1 measurement report meets the preset B1 threshold, the cell with the largest level value is determined, and based on the level The cell with the largest value initiates the SRVCC handover process to the user terminal, and transfers the voice services of the VOLTE voice uplink and downlink MOS differential to the CS domain, ensuring that when the quality of the user's call is poor, the SRVCC can be switched to the CS domain in time. Compared with the existing This solution covers various scenarios. For a single user, the SRVCC of the user at the edge of speech perception can be switched to the CS domain more accurately, improving user perception.

On the basis of the foregoing device embodiments, the switching unit is specifically used for:

Instruct the MME to issue instructions to the base station eNodeB through the S1-MME port, and receive B1 measurement reports reported by the user terminal through the base station eNodeB and the MME in sequence, wherein the base station eNodeB is based on the B1 measurement report. The instruction sends a B1 measurement control instruction to the user terminal, and the B1 measurement control instruction is used to instruct the user terminal to report a B1 measurement report, and the level values of each cell in the B1 measurement report meet the B1 threshold, so The user terminal reports its B1 measurement report to the base station eNodeB according to the B1 measurement control instruction. If the base station eNodeB checks and learns that the level values of each cell in the B1 measurement report meet the B1 threshold, it will pass the B1 measurement report. The MME reports the B1 measurement report.

In this embodiment, the process for the switching unit to acquire the B1 measurement report of the user terminal is: the switching unit sends a notification to the MME through the S1-MME port, and after receiving the notification, the MME sends a notification to the MME according to the notification. The base station eNodeB to which the user terminal is connected issues an instruction. After receiving the instruction, the base station eNodeB issues a B1 measurement control instruction to the user terminal according to the instruction. After the user terminal receives the B1 measurement control instruction , and report its B1 measurement report to the base station eNodeB according to the B1 measurement control instruction. If the base station eNodeB checks and learns that the level values of each cell in the B1 measurement report meet the B1 threshold, it will pass the MME reporting the B1 measurement report to the handover unit, wherein the B1 measurement control instruction is used to instruct the user terminal to report a B1 measurement report, and the level values of each cell in the B1 measurement report meet the B1 threshold, and the After receiving the B1 measurement control instruction, the user terminal checks the level values of each cell, determines cells whose level values all meet the B1 threshold, and generates a B1 measurement report according to these cells. After the base station eNodeB receives the B1 measurement report reported by the user terminal, it will check whether there is a false alarm in the B1 measurement report reported by the user terminal. If the level values all meet the B1 threshold, the B1 measurement report will be reported to the switching unit through the MME. In addition, it should be noted that if in the process of reporting the B1 measurement report, if it is detected that the current uplink/downlink MOS score is higher than the first value, the switching unit indicates through the S1-MME port The MME issues an instruction to the base station eNodeB to stop the user terminal from reporting the B1 measurement. This process is similar to the previous instruction issuing process, except that the user terminal does not send its B1 measurement report, but Stop sending its B1 measurement report, and the specific process will not be repeated here.

The device for triggering SRVCC handover in this embodiment can be used to execute the technical solutions of the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

Referring to FIG. 2 , this embodiment discloses a 2/4G converged networking network, which includes an S/P-GW and an MME, and further includes: the apparatus according to any one of the foregoing embodiments.

The 2/4G converged networking network provided by the embodiment of the present invention includes a device for triggering SRVCC switching, which ensures that the SRVCC can be switched to the CS domain in time when the quality of the user's call is poor. Compared with the prior art, this solution Covering various scenarios, for a single user, it can more accurately switch the SRVCC of the user at the edge of speech perception to the CS domain to improve user perception.

The embodiments of the present invention have the following beneficial effects: the existing SRVCC handover algorithm has a relatively single algorithm evaluation dimension, incomplete coverage scenarios, and inability to accurately optimize for a single user level. Based on actual needs, a set of users is established. The end-to-end perception MOS score evaluation system monitors and evaluates voice MOS in real time. Through threshold setting, the VOLTE voice stream SRVCC that seriously affects user perception is sent to the CS domain network to improve customer perception.

FIG. 4 shows a schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention. As shown in FIG. 4 , the electronic device may include: a processor 11 , a memory 12 , a bus 13 , and storage on the memory 12 and available in the a computer program running on the processor 11;

The processor 11 and the memory 12 communicate with each other through the bus 13;

When the processor 11 executes the computer program, the method provided by the above method embodiments is implemented, for example, including: monitoring whether the user terminal successfully establishes a VOLTE voice call based on the S/P-GW, if the user terminal successfully establishes a VOLTE voice call For a call, obtain the MOS value of this VOLTE voice call in real time based on the S1-U port of the S/P-GW; if it is determined that the MOS value is less than the preset first value, then obtain based on the S1-MME port of the MME The B1 measurement report of the user terminal reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB, if it is determined that within a preset time period, the MOS value is less than the the first value, and the level value of at least one cell in the B1 measurement report satisfies the preset B1 threshold, then determine the cell with the largest level value, and report to the user terminal based on the cell with the largest level value. The SRVCC handover process is initiated to transfer the voice service of the VOLTE voice uplink and downlink MOS differential to the CS domain, wherein the level values of each cell in the B1 measurement report reported by the base station eNodeB all meet the preset B1 threshold.

Embodiments of the present invention 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, implements the methods provided by the foregoing method embodiments, for example, including: based on S/P- The GW monitors whether the user terminal successfully establishes a VOLTE voice call, and if the user terminal successfully establishes a VOLTE voice call, obtains the MOS value of the VOLTE voice call in real time based on the S1-U port of the S/P-GW; If the MOS value is less than the preset first value, the B1 of the user terminal reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB is obtained based on the S1-MME port of the MME. Measurement report, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report meets the preset B1 threshold, then determine The cell with the largest level value initiates an SRVCC handover process to the user terminal based on the cell with the largest level value, and transfers the VOLTE voice uplink and downlink MOS differentiated voice services to the CS domain, wherein the B1 reported by the base station eNodeB The level values of each cell in the measurement report meet the preset B1 threshold.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. The orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present invention. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of the present invention, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it is to be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment in order to simplify the present disclosure and to aid in the understanding of one or more of the various aspects of the invention. , figures, or descriptions thereof. However, this method of disclosure should not be construed to reflect the intention that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention. It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The invention is not limited to any single aspect, nor to any single embodiment, nor to any combination and/or permutation of these aspects and/or embodiments. Furthermore, each aspect and/or embodiment of the invention may be used alone or in combination with one or more other aspects and/or embodiments thereof.

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: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. The scope of the invention should be included in the scope of the claims and description of the present invention.

Claims (10)

1. a method of triggering SRVCC handover, is characterized in that, comprises: Monitor whether the user terminal successfully establishes a VOLTE voice call based on the S/P-GW. If the user terminal successfully establishes a VOLTE voice call, obtain the MOS value of the VOLTE voice call in real time based on the S1-U port of the S/P-GW. ; If it is determined that the MOS value is less than the preset first value, the S1-MME port of the MME obtains the information reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB. In the B1 measurement report of the user terminal, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report meets the preset B1 threshold , then determine the cell with the largest level value, initiate an SRVCC handover process to the user terminal based on the cell with the largest level value, and transfer the VOLTE voice uplink and downlink MOS differentiated voice services to the CS domain, wherein the base station The level values of each cell in the B1 measurement report reported by the eNodeB all meet the preset B1 threshold. 2. method according to claim 1, is characterized in that, whether described based on S/P-GW monitoring user terminal successfully establishes VOLTE voice call, comprising: It is judged whether the S-GW sends or receives the ACK response SIP signaling, and if sent or received, it is determined that the user terminal has successfully established a VOLTE voice call. 3. method according to claim 2 is characterized in that, described based on the S1-U port of described S/P-GW obtains the MOS value of this VOLTE voice call in real time, comprises: Monitoring is started, the voice data packets of the user terminal are collected in real time from the S1-U of the S/P-GW, and the MOS value is calculated according to the voice data packets. The method according to claim 3, wherein the MME-based S1-MME port obtains all the information reported by the base station eNodeB connected to the user terminal and reported by the user terminal to the base station eNodeB. The B1 measurement report of the user terminal, including: Instruct the MME to issue instructions to the base station eNodeB through the S1-MME port, and receive B1 measurement reports reported by the user terminal through the base station eNodeB and the MME in sequence, wherein the base station eNodeB is based on the B1 measurement report. The instruction sends a B1 measurement control instruction to the user terminal, and the B1 measurement control instruction is used to instruct the user terminal to report a B1 measurement report, and the level values of each cell in the B1 measurement report meet the B1 threshold, so The user terminal reports its B1 measurement report to the base station eNodeB according to the B1 measurement control instruction. If the base station eNodeB checks and learns that the level values of each cell in the B1 measurement report meet the B1 threshold, it will pass the B1 measurement report. The MME reports the B1 measurement report. 5. The method according to claim 1, wherein the method further comprises: It is judged whether the S-GW sends or receives the on-hook SIP signaling, and if it sends or receives the signal, it ends. 6. A device for triggering SRVCC handover, characterized in that the device is connected to the S1-U port of the S/P-GW and the S1-MME port of the MME, comprising: The obtaining unit is used to monitor whether the user terminal successfully establishes a VOLTE voice call based on the S/P-GW, and if the user terminal successfully establishes a VOLTE voice call, obtain the MOS of this VOLTE voice call in real time based on the S1-U port value; A switching unit, configured to obtain, based on the S1-MME port, the information reported by the eNodeB of the base station connected to the user terminal and reported by the user terminal to the In the B1 measurement report of the user terminal of the base station eNodeB, if it is determined that within a preset time period, the MOS value is less than the first value, and the level value of at least one cell in the B1 measurement report satisfies the The preset B1 threshold determines the cell with the largest level value, initiates an SRVCC handover process to the user terminal based on the cell with the largest level value, and transfers the VOLTE voice uplink and downlink MOS differentiated voice services to the CS domain, Wherein, the level values of each cell in the B1 measurement report reported by the base station eNodeB all meet the preset B1 threshold. 7. The device according to claim 6, wherein the switching unit is specifically used for: Instruct the MME to issue instructions to the base station eNodeB through the S1-MME port, and receive B1 measurement reports reported by the user terminal through the base station eNodeB and the MME in sequence, wherein the base station eNodeB is based on the B1 measurement report. The instruction sends a B1 measurement control instruction to the user terminal, and the B1 measurement control instruction is used to instruct the user terminal to report a B1 measurement report, and the level values of each cell in the B1 measurement report meet the B1 threshold, so The user terminal reports its B1 measurement report to the base station eNodeB according to the B1 measurement control instruction. If the base station eNodeB checks and learns that the level values of each cell in the B1 measurement report meet the B1 threshold, it will pass the B1 measurement report. The MME reports the B1 measurement report. 8. A 2/4G converged networking network, comprising an S/P-GW and an MME, further comprising: the device according to any one of claims 6 to 7. 9. An electronic device, comprising: a processor, a memory, a bus, and a computer program stored in the memory and running on the processor; Wherein, the processor and the memory communicate with each other through the bus; The processor implements the method of any one of claims 1-5 when executing the computer program. 10. A non-transitory computer-readable storage medium, characterized in that, a computer program is stored on the storage medium, and when the computer program is executed by a processor, the method according to any one of claims 1-5 is implemented .

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