WO2019061433A1

WO2019061433A1 - Csfb result detection method and device, and storage medium

Info

Publication number: WO2019061433A1
Application number: PCT/CN2017/104867
Authority: WO
Inventors: 曾元清
Original assignee: 深圳市云中飞网络科技有限公司
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2019-04-04
Also published as: CN108124511B; CN108124511A

Abstract

Disclosed in the present invention are a circuit switched fallback (CSFB) result detection method and device, and a storage medium, comprising: in a process of performing CSFB on the basis of indication information indicating that a terminal uses a preset CSFB prioritization scheme for voice service, the terminal sends a voice call establishment request message to a target wideband code division multiple access (WCDMA) cell according to frequency point information of the target WCDMA cell; when a voice call link is successfully established in response to the voice call establishment request message, detecting that the terminal receives a routing area update reject message, and starting detection of the voice call state; when detecting that the voice call state is a disconnected state, determining that the CSFB fails; and when detecting that the voice call state is a connected state, determining whether the terminal returns to an LTE network within a preset period of time after the end of the voice call under a WCDMA network, so as to determine the result of the CSFB.

Description

Method and device for detecting falling result of CSFB, storage medium

Technical field

The embodiment of the invention relates to the technical field of CSFB (Circuit Switched Fallback), and particularly relates to a CSFB fallback result detecting method and device, and a storage medium.

Background technique

Since long-term evolution (LTE, Long Term Evolution) and 2G/3G dual-mode terminals are wireless-signal-mode, a dual-mode or multi-mode terminal with LTE and 2G/3G access capabilities, When using LTE access, 2G/3G circuit domain service signals cannot be transmitted. In order to enable the terminal (UE, User Equipment) to perform a CS (Circuit Switched) service, such as voice, and the UE can perform the packet domain (PS, Packet Switch) under the LTE access of the UE. The business is processed correctly, resulting in CSFB technology.

In the CSFB process, the originator of the telephone is called the caller (MO, Mobile Origination), the receiver of the call is called the called (MT, Mobile Termination), and the MO and the MT each have their own CSFB signaling flow. For the MT in the CSFB process, the occurrence of various abnormal conditions will probabilistically cause the CSFB process to fail, which may result in the call being unable to be connected. How to effectively detect the CSFB fallback result in an abnormal scenario is particularly necessary.

Summary of the invention

In order to solve the above technical problem, the embodiment of the present invention is to provide a CSFB fallback result detecting method and device, and a storage medium, which realize the detection of the fallback result in the CSFB process, thereby determining the communication scheme and improving the success of implementing the CSFB process. rate.

The technical solution of the embodiment of the present invention can be implemented as follows:

Embodiments of the present invention provide a CSFB fallback result detecting method, and the method package include:

In the process of performing CSFB based on the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, the terminal sends a voice call request message to the target WCDMA cell according to the target wideband code division multiple access WCDMA cell frequency point information, where The target WCDMA cell frequency point information is carried in a redirect command sent by the Long Term Evolution (LTE) base station;

When the voice call request message is successfully established, the terminal detects that the terminal receives the routing area update reject message and starts detecting the voice call state;

When it is detected that the voice call state is an off state, determining that the CSFB fallback result is a fallback failure;

When it is detected that the voice call state is the hold state, it is determined whether the terminal returns to the LTE network within a preset time period after the voice call in the WCDMA network ends, to determine a fallback result of the CSFB.

In the embodiment of the present invention, after the determining whether the terminal returns to the LTE network within a preset duration after the end of the voice call in the WCDMA network, the method further includes:

After the voice call in the WCDMA network ends, the terminal returns to the LTE network within the preset duration, and determines that the CSFB fallback result is successful.

After the voice call in the WCDMA network ends, the terminal does not return to the LTE network within the preset duration, and when detecting to continue to send a routing area update request message to the WCDMA network, determining the CSFB The result of the fall is the failure to fall back.

In the embodiment of the present invention, after the terminal receives the routing area update reject message, the method further includes:

It is detected that the routing area update request message is sent to the WCDMA network, and the result of the CSFB fallback is determined to be a fallback failure.

In the embodiment of the present invention, the adopting the preset CSFB optimization party based on the indication terminal In the process of performing the CSFB process, the method further includes: before the terminal sends a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information, the method further includes:

The triggering the terminal to send an attach request message to the LTE base station, and receiving an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message carries The CSFB optimization scheme is set to indicate the voice service.

In the embodiment of the present invention, the detecting that the terminal receives the routing area update reject message and starts detecting the voice call state includes:

Trimming the terminal to receive the routing area update reject message, and parsing the reject request cause value from the routing area update reject message;

When the rejection request cause value is a preset value, the detection of the voice call state is started.

A CSFB fallback result detecting apparatus provided by an embodiment of the present invention, the apparatus includes:

The voice call unit is configured to perform the CSFB process according to the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service, and the terminal sends the established voice according to the target wideband code division multiple access WCDMA cell frequency point information to the target WCDMA cell. a call request message, where the target WCDMA cell frequency point information is carried in a redirect command sent by the LTE base station;

The detecting unit is configured to, when responding to the voice call request message, successfully establish a voice call link, detecting that the terminal receives the routing area update reject message, and starts detecting the voice call state;

a determining unit, configured to determine that the fallback result of the CSFB is a fallback failure when detecting that the voice call state is an off state; and determine that the voice call state is in a hold state when the voice call state is detected to be in a hold state After the voice call ends, the terminal returns to the LTE network within a preset duration to determine the fallback result of the CSFB.

In the embodiment of the present invention, the device further includes:

The determining unit is further configured to determine, after the voice call in the WCDMA network ends, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, the terminal When returning to the LTE network within the preset duration, it is determined that the CSFB fallback result is a fallback success.

In the embodiment of the present invention, the device further includes:

The determining unit is further configured to determine, after the voice call in the WCDMA network ends, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, the terminal Not returning to the LTE network within the preset duration, and detecting that the routing area update request message is continued to be sent to the WCDMA network,

Determining the fallback result of the CSFB is a fallback failure.

In the embodiment of the present invention, the device further includes:

The determining unit is further configured to: after receiving the routing area update reject message, the terminal detects that the routing area update request message is sent to the WCDMA network, and determines that the CSFB fallback result is a fallback failure.

In the embodiment of the present invention, the device further includes:

An attaching unit configured to perform the CSFB process according to the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, where the terminal sends the voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information. And the triggering the terminal to send an attach request message to the LTE base station, and receiving an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message carries The preset CSFB optimization scheme performs indication information of the voice service.

In the embodiment of the present invention, the device further includes:

a parsing unit, configured to trigger the terminal to receive the routing area update reject message, and parse the reject request cause value from the routing area update reject message;

The detecting unit is specifically configured to start detecting the voice call state when the reject request cause value is a preset value.

The computer storage medium provided by the embodiment of the present invention stores computer executable instructions, and when the computer executable instructions are executed by the processor, the method steps of the CSFB fallback result detecting method are implemented.

The embodiment of the invention provides a CSFB fallback result detecting method and device, and a storage medium. In the process of performing CSFB based on the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform voice service, the terminal according to the WCDMA cell frequency point information The target WCDMA cell sends a voice call request message, and the target WCDMA cell frequency information is carried in the redirect command sent by the LTE base station; when the voice call request message is successfully established, the terminal detects that the terminal receives the routing area update. Rejecting the message, starting to detect the voice call state; when detecting that the voice call state is the off state, determining that the CSFB fallback result is a fallback failure; when detecting that the voice call state is the hold state, determining the voice under the WCDMA network After the call ends, whether the terminal returns to the LTE network within the preset time period to determine the CSFB fallback result. With the technical solution of the embodiment of the present invention, the voice call state in the CSFB process can be detected in the scenario where the 3G data service is not activated, thereby finally determining the CSFB fallback result, and realizing the detection of the fallback result in the CSFB process. At the same time, in the process of CSFB follow-up, the optimization scheme can be further improved to improve the success rate of the CSFB process to improve the user's calling experience.

DRAWINGS

1 is a schematic flowchart 1 of a CSFB fallback result detecting method according to an embodiment of the present invention;

2 is a schematic flowchart 2 of a CSFB fallback result detecting method according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for detecting a fallback result of applying CSFB according to an embodiment of the present invention; intention;

4 is a schematic diagram 1 of an emulation code according to an embodiment of the present invention;

FIG. 5 is a schematic diagram 2 of a simulation code according to an embodiment of the present disclosure;

6 is a schematic structural diagram 1 of a CSFB fallback result detecting apparatus according to an embodiment of the present invention;

FIG. 7 is a second schematic structural diagram of a CSFB fallback result detecting apparatus according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of hardware structure of a CSFB fallback result detecting apparatus according to an embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Under normal circumstances, the CSFB-enabled terminal can search for the LTE network, complete the LTE/2G network joint registration, and be able to voice call and call.

The CSFB process consists of three phases: 1) the UE initiates a call (corresponding to MO) on the LTE network, or receives a page (corresponding to the MT); 2) the UE falls back under the guidance of the LTE network and searches for a suitable GSM cell/WCDMA cell. Access; 3) The UE reads the GSM cell/WCDMA cell system broadcast message and establishes a voice call.

With the continuous expansion of the LTE base station and the retreat and re-farming of some old GSM/WCDMA base stations, the configuration of the original network deployed on the base station signaling side is not updated in real time, and the configuration that the network sends to the UE occurs. The information is inconsistent with the actual deployment, which leads to various abnormalities in the inter-system (InterRAT) voice call of CSFB, such as failure to connect, repeated connection failure, and the like.

In order to solve the call problem caused by such network deployment incompatibility, each terminal manufacturer adopts Various optimization methods are used to improve the call experience. To verify the rationality of the CSFB optimization scheme, it is necessary to detect the CSFB process in the abnormal scenario in order to improve the CSFB optimization scheme in a targeted manner.

The CSFB fallback scheme adopts the 3GPP R8 redirection fallback scheme. During the CSFB deployment process, the problem of parameter configuration will probabilistically cause the CSFB process to be abnormal. To this end, an embodiment of the present invention provides a method for detecting a CSFB fallback result in a scenario in which a terminal does not open a 3G data service and causes a terminal to perform routing area update in a target WCDMA cell PS (Packet Switch) domain.

In various embodiments of the present invention, in the process of performing CSFB based on indication information indicating that the terminal performs voice service by using a preset CSFB optimization scheme, the terminal sends a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information. The target WCDMA cell frequency point information is carried in the redirection command sent by the LTE base station; when the voice call request message is successfully established, the terminal detects that the terminal receives the routing area update reject message and starts detecting the voice call state; When it is detected that the voice call state is the disconnected state, determining that the CSFB fallback result is a fallback failure; when detecting that the voice call state is the hold state, determining whether the terminal is preset after the voice call under the WCDMA network ends Return to the LTE network within the time limit to determine the CSFB fallback result.

With the technical solution of the embodiment of the present invention, the voice call state in the CSFB process can be detected in the scenario where the 3G data service is not activated, thereby finally determining the CSFB fallback result, and realizing the detection of the fallback result in the CSFB process. At the same time, in the process of CSFB follow-up, the optimization scheme can be further improved to improve the success rate of the CSFB process to improve the user's calling experience.

FIG. 1 is a schematic flowchart of a CSFB fallback result detecting method according to an embodiment of the present invention. As shown in FIG. 1, a CSFB fallback result detecting method includes the following steps:

S101. The terminal performs the CSFB process according to the indication information that indicates that the terminal uses the preset CSFB optimization scheme to perform the voice service, and the terminal according to the target WCDMA cell frequency point information The target WCDMA cell sends a voice call request message, and the target WCDMA cell frequency information is carried in the redirect command sent by the LTE base station;

It should be noted that, in the embodiment of the present invention, the CSFB fallback result detecting device triggers the terminal to send an attach request message to the LTE base station, and receives an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message is carried. Instructing the terminal to use the preset CSFB optimization scheme to perform voice service indication information.

Here, the voice call of the terminal under the WCDMA network is triggered when the target WCDMA cell frequency point information is accessed to the target WCDMA cell.

The indication information is carried in the attach accept message sent by the LTE base station to the terminal; the attach accept message is sent by the LTE base station after the terminal sends the attach request message to the LTE base station. Specifically, when detecting that the terminal receives the paging message sent by the LTE base station, the control terminal performs a CSFB process based on the indication information, and in the process of performing the CSFB, the terminal receives the redirect command sent by the LTE base station.

The CSFB process is triggered when the terminal receives the paging message sent by the LTE base station.

In this way, in the embodiment of the present invention, the CSFB fallback result detection may be based on the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the CSFB process, and in the CSFB execution process, the terminal may according to the target WCDMA cell frequency point. The information is sent to the target WCDMA cell to establish a voice call request message (which can be detected by the fallback result detection device of the CSFB), wherein the target WCDMA cell frequency point information is carried in the redirect command sent by the LTE base station.

In the embodiment of the present invention, the terminal is an MT, and the terminal is registered on the LTE cell, and the terminal sends the establishment of the voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information as the implementation of the CS domain called procedure.

The called process of the CS domain can be as follows:

1. Trigger the MT CSFB process, and the UE (terminal) receives the PAGING TYPE 1 message on the paging channel sent by the LTE network, and starts the CSFB process;

2. The RRC connection is established. First, the RRC of the UE receives the request of the non-access stratum to send an RRC connection setup request message to the UTRAN, where the message includes the called UE number, service type, and the like. After receiving the message, the UTRAN allocates the radio resource according to the network condition and sends it to the UE in the RRC CONNECTION SETUP message. The UE will configure the protocol layer parameters according to the message and return an acknowledgement message.

It should be noted that there are two cases of RRC connection establishment: RRC connection establishment on the common channel and RRC connection establishment on the dedicated channel. The difference between the two is that the transport channels used by the RRC connection are different, and thus the process of connection establishment is different.

3. Establishment of the Iu signaling connection. After the RRC connection is established, the UE will send a service request to the CN. At this time, the RRC of the UE sends an INITIAL DIRECT TRANSFER message, and the message includes the information of the non-access stratum (CM SERVICE REQUEST). After receiving the message, the RNC sends the INITIAL UE MESSAGE, and the non-access stratum message of the UE is transparently forwarded to the CN, and the Iu signaling connection is established at the same time as the message is sent. After the Iu signaling connection is established, the non-access stratum message transmission between the UE and the CN is performed using the DOWNLINK DIRECT TRANSFER and UPLINK DIRECT TRANSFER messages.

4. Authentication. After the Iu signaling connection is established, the CN needs to authenticate the UE. Authentication is a non-access stratum function that is transparently transmitted in UTRAN.

5. Establishment of RAB. After the UE service request is received by the network, the CN will allocate a Radio Access Bearer (RAB) according to the service condition. At the same time, the corresponding radio bearer (RB) will be established on the air interface.

It should be noted that if a radio link is established in the RRC connection setup, the radio link reconfiguration process needs to be performed. If no radio link is established in the RRC connection, that is, when the RRC connection on the common channel is established. , the process of establishing a wireless link should be performed here.

6, answer. At this point, the UE will start to answer and enter the call state.

It should be noted that, in the embodiment of the present invention, after the UE returns to the WCDMA cell according to the target WCDMA cell frequency point information, an RRC Request request is initiated, and the network sends the CS. The resource of the domain is CS RAB setup, and the voice call is established, that is, the process of the terminal transmitting the voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information.

It should be noted that, in actual application, a network environment applied to the embodiment of the present invention may be constructed by means of a laboratory simulation, that is, the scenario in which the terminal is located in the embodiment of the present invention is obtained by using an emulation method. In this way, on the one hand, the staff does not need to go to the on-site detection, thereby reducing the personnel cost; on the other hand, the scene in the scene may also contain other factors, thereby affecting the detection result, so the simulation network of the embodiment of the present invention is adopted. The CSFB anomaly scenario that occurs in the field network can be stably reproduced, and the influence of other factors on the detection result in the scenario described in the embodiment of the present invention can be eliminated.

S102. When the voice call request message is successfully established, the triggering terminal receives the routing area update reject message and starts detecting the voice call state.

After the CSFB fallback detection device detects that the terminal sends a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information, the network responds to the voice call request message, and the CS domain resource is sent to perform CS RAB setup, thereby voice After the call setup is completed, the voice call link is successfully established. When the active result detecting device of the CSFB detects that the terminal receives the routing area update reject message, it can start detecting the voice call state.

Based on this, in some embodiments, the voice call state of the terminal under the WCDMA network in the simulated network environment is detected.

It should be noted that, in the embodiment of the present invention, a method for detecting a CSFB fallback result in a scenario in which a terminal does not open a 3G data service and causes a terminal to update a routing area in a PS domain of a target WCDMA cell is rejected. When the voice call link is successfully established, the CSFB fallback detection device triggers the network to simulate the PS domain access and sends a RAU reject (ie, a routing area update reject message) to the terminal to detect the CSFB fallback result, that is, The CSFB fallback result detecting device triggers the terminal to receive the routing area update reject message. As a result, the terminal cannot obtain the PS domain resource and fails to complete the flow of the subsequent RAU. Therefore, the CSFB fallback detection device can start detecting the voice call state to detect the CSFB fallback result.

Specifically, when the voice call request message is successfully established, the CSFB fallback result detecting device triggers the terminal to receive the routing area update reject message, and parses the reject request cause value from the routing area update reject message; When the request cause value is a preset value, the voice call state is detected.

Here, the default value is: GPRS is not allowed, indicating that the 3G service data is not activated.

It can be understood that, in the embodiment of the present invention, since the voice call function can be normally used when the terminal does not open the 3G service data, it can be performed by monitoring the voice call state when the PS service fails. Further detection of the fallback results of CSFB.

It should be noted that the called process of the PS domain may be:

2. Establish an RRC connection.

3. Establishment of the Iu signaling connection.

4. UE authentication and security mode control.

5. ATTACH. Establish a logical connection between the UE and the Serving GPRS Service Node (SGSN).

6. Service Request and Packet Data Protocol (PDP) activation. The UE non-access stratum sends a service request and activates the PDP.

7. Establishment of RAB. After the UE service request is received by the network, the CN will allocate a Radio Access Bearer (RAB). A corresponding radio bearer (RB) will be established on the air interface.

8, answer. CN response. When the UE receives the PDP RESPONSE message, it can send and receive IP data packets at this time.

It should be noted that the packet service of the WCDMA system is "real-time online", that is, the user and the network are always connected. Usually, when the user terminal is turned on, an ATTACH operation is performed to establish a logical connection with the SGSN. When the packet service data transmission is required, it is sufficient to directly activate the PDP.

In the embodiment of the present invention, after the RAB is established, after the UE service request is received by the network, the CN allocates a radio access bearer (RAB), because the GPRS is not allowed, the PS domain resource cannot be obtained.

S103. When it is detected that the voice call state is an off state, determining that the CSFB fallback result is a fallback failure;

When the voice call request message is successfully established, the triggering terminal receives the routing area update reject message, and after detecting the voice call state, when the voice call state is detected as the disconnected state, the simulated 3G is not activated. The implementation result of the service data scenario is inconsistent with the theory. That is to say, the terminal uses the preset CSFB optimization scheme to perform the CSFB process of the voice service indication information, which is problematic, and the CSFB fallback result detection device determines that the CSFB fallback result is If the fallback fails, then this default CSFB optimization scheme fails.

S104. When it is detected that the voice call state is the hold state, determine whether the terminal returns to the LTE network within a preset time period after the voice call in the WCDMA network ends, to determine a CSFB fallback result.

When the voice call request message is successfully established, the trigger terminal receives the routing area update reject message, and after detecting the voice call state, when the voice call state is detected as the hold state, the simulated 3G service is not activated. The preliminary implementation result of the data scenario is consistent with the theory, and then a further confirmation is made to detect whether the terminal returns to the LTE network within a preset time period after the end of the voice call in the WCDMA network to determine the CSFB fallback result, thereby determining Whether this preset CSFB optimization scheme is successful.

The preset duration can be set as needed, which is not limited in the embodiment of the present invention.

Here, in actual application, it is possible to detect whether the terminal requests the resources of the WCDMA network and establish a voice call through related signaling; accordingly, the related signaling can be used to detect whether the terminal's voice call in the WCDMA network is interrupted, and relevant Signaling to detect whether the terminal returns to the LTE network within a preset time period.

Specifically, (1) when the voice call state is detected as being in a hold state, after the voice call in the WCDMA network ends, the terminal returns to the LTE network within a preset time period, and determines that the CSFB fallback result is a fallback success, that is, The terminal uses the preset CSFB optimization scheme to perform the CSFB process for the voice service indication information. The CSFB fallback result detection device determines that the CSFB fallback result is successful, and the preset CSFB optimization scheme is successful. (2) When it is detected that the voice call state is the hold state, after the voice call under the WCDMA network ends, the terminal does not return to the LTE network within the preset time period, and when detecting that the routing area update request message is continuously sent to the WCDMA network, It is determined that the CSFB fallback result is a fallback failure. That is to say, the terminal uses the preset CSFB optimization scheme to perform the voice service indication information to execute the CSFB process, which is problematic, and causes the CSFB fallback result detecting device to determine that the CSFB fallback result is a fallback failure. Then this default CSFB optimization solution is a failure.

It can be understood that the voice call state in the CSFB process can be detected in the scenario where the 3G data service is not activated, thereby finally determining the CSFB fallback result, and realizing the detection of the fallback result in the CSFB process, and at the same time In the process of CSFB, the optimization scheme can be further improved to improve the success rate of the CSFB process to improve the user's calling experience.

Further, as shown in FIG. 2, a method for detecting a fallback result of a CSFB according to an embodiment of the present invention, when a voice call link is successfully established in response to a voice call request message, after the trigger terminal receives the routing area update reject message, The above method may further include: S105. as follows:

S105. Detecting that the routing area update request message is sent to the WCDMA network, determining that the CSFB fallback result is a fallback failure.

When the voice call request message is successfully established, the trigger terminal receives the routing area update reject message, and detects that the routing area update request is continuously sent to the WCDMA network. The message determines that the CSFB fallback result is a fallback failure.

Specifically, when the voice call request message is successfully established, the CSFB fallback result detecting device triggers the terminal to receive the routing area update reject message, and parses the reject request cause value from the routing area update reject message; When the request cause value is a preset value, it is detected that the routing area update request message is continuously sent to the WCDMA network, and it is determined that the CSFB fallback result is a fallback failure.

It can be understood that, in the embodiment of the present invention, since the terminal does not send the routing area update request message to the WCDMA network again when the 3G service data is not enabled, when detecting that the routing area is continuously sent to the WCDMA network, When updating the request message, it is determined that the CSFB fallback result is a fallback failure, that is, the terminal uses the preset CSFB optimization scheme to perform the voice service indication information to perform the CSFB process, which is problematic, and causes the CSFB fallback result detecting device to determine the CSFB. The result of the fallback is a fallback failure, then this default CSFB optimization scheme fails.

It can be understood that, in the embodiment of the present invention, the CSFB fallback result detecting device can detect the success or failure of the CSFB fallback result by detecting the terminal performing the CSFB process by using the preset CSFB optimization scheme to perform the voice service indication information. Whether the preset CSFB optimization scheme in the scenario where the 3G service data is not activated is correct (successful), that is, whether the preset CSFB optimization scheme adopted by the terminal is a reasonable CSFB fallback scheme, and at the same time, a CSFB optimization is realized. Whether the program is reasonable detection method.

In addition, detecting the voice call state and various request messages of the terminal under the WCDMA network in the simulated network environment, the simulation method does not require the staff to go to the site, and other factors affecting the detection can be removed, thereby greatly reducing the personnel. At the same time, the influence of other factors on the detection result in the scenario described in the embodiment of the present invention can be eliminated.

The present invention will be further described in detail below with reference to an application embodiment.

In this application embodiment, a network environment is constructed through a simulation platform, including frequency division duplexing. (FDD)-LTE cell, WCDMA cell; wherein, in the LTE SIB, WCDMA 1 is configured as neighbor cell information, and LTE neighbor cell information is configured in WCDMA SIB18.

The abnormal scenario of the application embodiment is that, in the scenario that the 3G service data is not enabled, the terminal can still complete the CSFB by using the known CS resources, thereby verifying the validity and rationality of the UE side call optimization scheme.

A method for detecting a fallback result of a CSFB provided by this application embodiment, as shown in FIG. 3, includes the following steps:

S201. The UE is registered on the LTE cell, and performs an attach procedure.

Specifically, the UE is an MT, and after the UE is powered on, the Evolved Packet System (EPS)/International Mobile Subscriber Identification Number (IMSI) attach procedure is first executed.

The method includes: triggering the UE to send an attach request message (Attach Request) to the LTE base station, and receiving an attach accept message sent by the LTE base station, where the attach accept message carries the instruction to indicate that the terminal adopts the preset CSFB optimization. The scheme provides instructions for voice services. 4 is a schematic diagram 1 of an emulation code according to an embodiment of the present invention, in which: IMS voice over PS(V)=Not supported(0), representing the indication information.

S202: The network side triggers the MT CSFB process, and the network side sends a paging message (Paging) to the UE to start the CSFB process.

Here, in actual application, the MO needs to initiate a call for the MT first, and then the MT receives the paging message sent by the network side.

Specifically, after receiving the initial address request (IAM) incoming message, the mobile services switching center (MSC) in the network sends the SGsAP-PAGING-REQUEST message according to the existing SGs association and Mobility Management Entity (MME) information. To the MME, the SGsAP-PAGING-REQUEST message carries the following information: IMSI, Temporary Mobile Subscriber Identity (TMSI), Service Indicator, Calling Number, and Location Area Information.

After receiving the message, the MME sends a paging message to the base station, and the base station initiates an air interface Paging process. The UE establishes a connection and sends an Extended Service Request message to the MME. The MME sends an SGsAP-SERVICE-REQUEST message to the MSC. The MSC receives the message and does not resend the paging request message to the MME. To avoid the call waiting time being too long during the call connection process, the MSC receives the SGs Service Request message containing the idle state indication, first notifying that the calling call is in the process of being connected. The MME sends an Initial UE Context Setup message to the base station. Here, the Initial UE Context Setup message carries a CS Fallback Indicator, and the CS Fallback Indicator is used to indicate that the base station UE needs to fall back to the UMTS Terrestrial Radio Access Network due to the CSFB service requirement (UTRAN, UMTS Terrestrial Radio Access Network). ) / GSM / EDGE Radio Access Network (GERAN, GSM EDGE Radio Access Network).

The UE receives the LTE_RRCConnectionRelease signaling sent by the LTE base station, that is, the redirect command. The redirection command carries the frequency point information of the target WCDMA cell. As shown in FIG. 5, the base station sends an R8 redirection command (rrcConnectionRelease_R8(0)) to the UE, and implements a process for the terminal to send a voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information.

S203: When the voice call request message is successfully established, the CSFB fallback result detecting device simulates that the 3G service data is not activated by the simulation platform, and the triggering terminal receives the routing area update reject message, and starts detecting the voice call state;

S204. When it is detected that the voice call state is the hold state, determine whether the terminal returns to the LTE network within a preset time period after the voice call in the WCDMA network ends, to determine a CSFB fallback result;

S205. When it is detected that the voice call state is in the hold state, after the voice call in the WCDMA network ends, the terminal returns to the LTE network within a preset time period, and determines that the CSFB fallback result is a fallback success;

S206. When it is detected that the voice call state is the hold state, after the voice call in the WCDMA network ends, the terminal does not return to the LTE network within a preset time period, and detects that the WCDMA is continued to be transmitted. When the network sends the routing area update request message, it is determined that the CSFB fallback result is a fallback failure;

S207. When it is detected that the voice call state is the off state, determining that the CSFB fallback result is a fallback failure;

S208. When the voice call request message is successfully established, the CSFB fallback result detecting device simulates that the 3G service data is not activated by the simulation platform, and the trigger terminal receives the routing area update rejection message, and detects that the transmission to the WCDMA network is continued. The routing area update request message determines that the CSFB fallback result is a fallback failure.

It should be noted that the S203-S207 and the S208 and the S201-S202 respectively form two detection methods for detecting the fallback result of the CSDB, and the specific detection method is adopted, and the selection method can be selected according to the actual situation. No restrictions.

According to the preset CSFB optimization scheme, when the UE ends the call on the WCDMA network, the UE should quickly return to the LTE network.

When the UE cannot return to the LTE network within the preset time period, the UE may attempt to perform a Routing Area Update (RAU) process on the WCDMA network. At this time, the optimization scheme of the CSFB fails.

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a CSFB fallback result detecting apparatus 1. As shown in FIG. 6, the apparatus includes:

The voice call unit 10 is configured to perform the CSFB process according to the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service, and the terminal sends the target to the target WCDMA cell according to the target wideband code division multiple access WCDMA cell frequency point information. a voice call request message, where the target WCDMA cell frequency point information is carried in a redirect command sent by the LTE base station;

The detecting unit 11 is configured to: when the voice call link is successfully established in response to the voice call request message, detecting that the terminal receives the routing area update reject message, and starts detecting the voice call state;

The determining unit 12 is configured to, when detecting that the voice call state is in an off state, Determining the fallback result of the CSFB is a fallback failure; and when detecting that the voice call state is a hold state, determining whether the terminal returns to the LTE network within a preset time period after the voice call under the WCDMA network ends Determine the fallback result of the CSFB.

In the embodiment of the present invention, the device further includes:

The determining unit 12 is further configured to determine, after the end of the voice call in the WCDMA network, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, When the terminal returns to the LTE network within the preset duration, it is determined that the CSFB fallback result is a fallback success.

In the embodiment of the present invention, the device further includes:

The determining unit 12 is further configured to determine, after the end of the voice call in the WCDMA network, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, When the terminal does not return to the LTE network within the preset duration, and detects that the routing area update request message is sent to the WCDMA network, it is determined that the CSFB fallback result is a fallback failure.

In the embodiment of the present invention, the device further includes:

The determining unit 12 is further configured to: after receiving the routing area update reject message, the terminal detects that the routing area update request message is sent to the WCDMA network, and determines that the CSFB fallback result is a fallback failure.

Based on FIG. 6, as shown in FIG. 7, in the embodiment of the present invention, the device further includes:

The attaching unit 13 is configured to perform the CSFB process according to the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, and the terminal sends the establish voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information. Before the terminal is configured to send an attach request message to the LTE base station, and receive an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message is used to indicate that the terminal adopts the The preset CSFB optimization scheme is used to indicate the voice service.

In the embodiment of the present invention, the device further includes:

The parsing unit 14 is configured to trigger the terminal to receive the routing area update reject message, and parse the reject request cause value from the routing area update reject message;

The detecting unit 11 is specifically configured to start detecting the voice call state when the reject request cause value is a preset value.

In practical applications, the detecting unit 11, the determining unit 12, the parsing unit 14, the voice talk unit 10, and the attaching unit 13 may be implemented by the processor 15 in the fallback result detecting device of the CSFB.

The hardware implementation of each unit in the fallback result detecting device of the CSFB is provided. In order to implement the embodiment of the present invention, the embodiment of the present invention further provides a CSFB fallback result detecting device. As shown in FIG. 8, the CSFB is The fallback result detecting apparatus includes a processor 15 and a storage medium 16 configured to store a computer program executable on the processor 15,

The processor 15 is configured to execute the step of the CSFB fallback result detecting method when the computer program stored in the storage medium 16 is executed.

Of course, in actual application, as shown in FIG. 8, the components in the CSFB fallback result detecting device are coupled together by the bus system 17. It will be appreciated that the bus system 17 is used to implement connection communication between these components. The bus system 17 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as the bus system 17 in FIG.

It should be noted that, in the CSFB fallback result detection apparatus provided by the above embodiment, when the CSFB fallback result detection is performed, only the division of each of the above program modules is illustrated. In actual application, the above processing may be allocated as needed. Different program modules are completed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the CSFB fallback result detecting device provided by the foregoing embodiment is the same as the CSFB fallback result detecting method embodiment. The specific implementation process is described in detail in the method embodiment, and details are not described herein again.

The computer storage medium provided by the embodiment of the present invention stores computer executable instructions, and when the computer executable instructions are executed by the processor, the method steps of the CSFB fallback result detecting method are implemented. The computer readable storage medium may be a magnetic random access memory (FRAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), and an erasable memory. Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash Memory, Magnetic Surface Memory, Optical Disc Or a memory such as a CD-ROM (Compact Disc Read-Only Memory).

The technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

In the several embodiments provided by the present invention, it should be understood that the disclosed method and smart device may be implemented in other manners. The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.

The units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one second processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; The above integrated unit can be implemented in the form of hardware. It can also be implemented in the form of hardware plus software functional units.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention.

Industrial applicability

The embodiment of the invention provides a CSFB fallback result detecting method and device, and a storage medium. The terminal performs the CSFB process according to the target WCDMA cell frequency point information based on the instruction information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service. Sending a voice call request message to the target WCDMA cell, the target WCDMA cell frequency point information is carried in the redirect command sent by the LTE base station; when the voice call request message is successfully established, the terminal detects that the terminal receives the routing area Updating the reject message, starting to detect the voice call state; determining that the CSFB fallback result is a fallback failure when detecting that the voice call state is the off state; determining that the voice call state is in the hold state when the voice call state is detected as being in the WCDMA network After the voice call ends, the terminal returns to the LTE network within a preset time period to determine the CSFB fallback result.

Claims

A method for detecting a fallback result of a circuit domain fallback CSFB, the method comprising:

In the process of performing CSFB based on the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, the terminal sends a voice call request message to the target WCDMA cell according to the target wideband code division multiple access WCDMA cell frequency point information, where The target WCDMA cell frequency point information is carried in a redirect command sent by the Long Term Evolution (LTE) base station;

When the voice call request message is successfully established, the terminal detects that the terminal receives the routing area update reject message and starts detecting the voice call state;

When it is detected that the voice call state is an off state, determining that the CSFB fallback result is a fallback failure;

When it is detected that the voice call state is the hold state, it is determined whether the terminal returns to the LTE network within a preset time period after the voice call in the WCDMA network ends, to determine a fallback result of the CSFB.
The method of claim 1, wherein the method further comprises: after determining whether the terminal returns to the LTE network within a preset duration after the end of the voice call in the WCDMA network, the method further comprising:

After the voice call in the WCDMA network ends, the terminal returns to the LTE network within the preset duration, and determines that the CSFB fallback result is successful.
The method of claim 1, wherein the method further comprises: after determining whether the terminal returns to the LTE network within a preset duration after the end of the voice call in the WCDMA network, the method further comprising:

After the voice call in the WCDMA network ends, the terminal does not return to the LTE network within the preset duration, and when detecting to continue to send a routing area update request message to the WCDMA network, determining the CSFB The result of the fall is the failure to fall back.
The method of claim 1 wherein said terminal receives a routing area update After rejecting the message, the method further includes:

It is detected that the routing area update request message is sent to the WCDMA network, and the result of the CSFB fallback is determined to be a fallback failure.
The method according to claim 1, wherein the terminal performs the CSFB process based on the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, the terminal sends the target WCDMA cell frequency point information to the target WCDMA cell. Before the voice call request message is established, the method further includes:

The triggering the terminal to send an attach request message to the LTE base station, and receiving an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message carries The CSFB optimization scheme is set to indicate the voice service.
The method according to any one of claims 1 to 5, wherein the detecting that the terminal receives the routing area update reject message and starts detecting the voice call state comprises:

Trimming the terminal to receive the routing area update reject message, and parsing the reject request cause value from the routing area update reject message;

When the rejection request cause value is a preset value, the detection of the voice call state is started.
A CSFB fallback result detecting device, the device comprising:

The voice call unit is configured to perform the CSFB process according to the indication information indicating that the terminal uses the preset CSFB optimization scheme to perform the voice service, and the terminal sends the established voice according to the target wideband code division multiple access WCDMA cell frequency point information to the target WCDMA cell. a call request message, where the target WCDMA cell frequency point information is carried in a redirect command sent by the LTE base station;

The detecting unit is configured to, when responding to the voice call request message, successfully establish a voice call link, detecting that the terminal receives the routing area update reject message, and starts detecting the voice call state;

a determining unit configured to determine when the voice call state is detected to be in an off state The fallback result of the CSFB is a fallback failure; and when it is detected that the voice call state is a hold state, it is determined whether the terminal returns to the LTE network within a preset time period after the voice call in the WCDMA network ends, to determine The fallback result of the CSFB.
The apparatus of claim 7 wherein said apparatus further comprises:

The determining unit is further configured to determine, after the voice call in the WCDMA network ends, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, the terminal When returning to the LTE network within the preset duration, it is determined that the CSFB fallback result is a fallback success.
The apparatus of claim 7 wherein said apparatus further comprises:

The determining unit is further configured to determine, after the voice call in the WCDMA network ends, whether the terminal returns to the LTE network within a preset time period, after the voice call in the WCDMA network ends, the terminal If the LTE network is not returned within the preset duration, and it is detected that the routing area update request message is sent to the WCDMA network, the result of the CSFB fallback is determined to be a fallback failure.
The apparatus of claim 7 wherein said apparatus further comprises:

The determining unit is further configured to: after receiving the routing area update reject message, the terminal detects that the routing area update request message is sent to the WCDMA network, and determines that the CSFB fallback result is a fallback failure.
The apparatus of claim 7 wherein said apparatus further comprises:

An attaching unit configured to perform the CSFB process according to the indication information indicating that the terminal performs the voice service by using the preset CSFB optimization scheme, where the terminal sends the voice call request message to the target WCDMA cell according to the target WCDMA cell frequency point information. And the triggering the terminal to send an attach request message to the LTE base station, and receiving an attach accept message sent by the LTE base station in response to the attach request message, where the attach accept message carries The preset CSFB optimization scheme performs indication information of the voice service.
The device according to any one of claims 7 to 11, wherein the device further comprises:

a parsing unit, configured to trigger the terminal to receive the routing area update reject message, and parse the reject request cause value from the routing area update reject message;

The detecting unit is specifically configured to start detecting the voice call state when the reject request cause value is a preset value.
A computer storage medium having stored thereon computer executable instructions for performing the method steps of any of claims 1-6 when executed by a processor.