CN108064454B

CN108064454B - CSFB (Circuit switched Fall Back) result detection method and device and storage medium

Info

Publication number: CN108064454B
Application number: CN201780001975.8A
Authority: CN
Inventors: 曾元清
Original assignee: Shenzhen Huantai Technology Co Ltd
Current assignee: Shenzhen Huantai Technology Co Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2020-06-23
Anticipated expiration: 2037-09-30
Also published as: WO2019061438A1; CN108064454A

Abstract

The embodiment of the invention discloses a fall-back result detection method of circuit switched fall-back CSFB, which comprises the following steps: detecting radio access bearer establishment failure information aiming at a terminal in a CSFB (Circuit switched fallback) executing process based on indication information indicating that the terminal adopts a preset CSFB optimization scheme to perform voice service; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed; detecting a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails; and judging whether the CSFB falls back successfully at least based on the voice call state. The embodiment of the invention also discloses a fall-back result detection device and a storage medium of the circuit switched fall-back CSFB.

Description

CSFB (Circuit switched Fall Back) result detection method and device and storage medium

Technical Field

The present invention relates to the technical field of Circuit Switched Fallback (CSFB), and in particular, to a method and an apparatus for detecting a CSFB Fallback result, and a storage medium.

Background

Since wireless communication between a Long Term Evolution (LTE) terminal and a 2G/3G dual-mode terminal is a single-radio mode (Signal-radio mode), a dual-mode or multi-mode terminal with LTE and 2G/3G access capabilities cannot transmit 2G/3G circuit domain service signals when LTE access is used. In order to enable a terminal (UE) to perform Circuit domain (CS) services such as voice services under LTE access or camping, and to correctly handle Packet domain (PS) services being performed by the UE under LTE access, a CSFB technique has been developed.

In the CSFB procedure, an initiator of a phone call is called a calling party (MO), a receiver of the phone call is called a called party (MT), and the MO and the MT each have their own CSFB signaling flow. For the MT in the CSFB procedure, the occurrence of various abnormal situations will probabilistically cause the CSFB procedure to fail, and thus the call cannot be connected, and how to effectively detect the fall-back result of the CSFB in the abnormal scenario is particularly necessary.

Disclosure of Invention

In order to solve the existing technical problems, embodiments of the present invention provide a detection method, a device thereof, and a storage medium, which can at least solve the above problems in the prior art.

The technical scheme of the embodiment of the invention is realized as follows:

a first aspect of an embodiment of the present invention provides a method for detecting a fallback result of a circuit switched fallback CSFB, where the method includes:

detecting radio access bearer establishment failure information aiming at a terminal in a CSFB (Circuit switched fallback) executing process based on indication information indicating that the terminal adopts a preset CSFB optimization scheme to perform voice service; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed;

detecting a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails;

determining whether the CSFB has successfully fallen back based at least on the voice call state; wherein the content of the first and second substances,

the indication information is carried in an attachment acceptance message sent by the LTE base station to the terminal; the attachment acceptance message is sent by the LTE base station after the terminal sends an attachment request message to the LTE base station; the CSFB procedure is triggered to be executed when the terminal receives the paging message sent by the LTE base station.

In the foregoing solution, the determining whether the CSFB falls back successfully based on the voice call state includes:

and when the voice call interruption of the terminal in the TDSCDMA network is determined based on the voice call state, determining that the CSFB falls back unsuccessfully.

In the above scheme, the method further comprises:

after the voice call under the TDSCDMA network is finished, detecting whether the terminal returns to the LTE network within a preset time length;

and when the terminal does not return to the LTE network within the preset time length, determining that the CSFB falls back to failure.

In the above solution, the detecting the voice call state of the terminal in the TDSCDMA network includes:

and detecting the voice call state of the terminal in the TDSCDMA network under the simulated network environment.

A second aspect of the embodiments of the present invention provides a fall-back result detection apparatus for a circuit switched fall-back CSFB, including:

a detection unit configured to detect radio access bearer establishment failure information for an indication terminal in a CSFB procedure executed based on indication information indicating that the indication terminal employs a preset CSFB optimization scheme for a voice service; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed; the terminal is also configured to detect a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails;

a determining unit configured to determine whether the CSFB has successfully fallen based on at least the voice call state;

In the foregoing solution, the determining unit is further configured to determine that the CSFB fallback fails when it is determined that the voice call of the terminal in the TDSCDMA network is interrupted based on the voice call state.

In the above solution, the detecting unit is further configured to detect whether the terminal returns to the LTE network within a preset time after the voice call in the TDSCDMA network is ended;

correspondingly, the determining unit is further configured to determine that the CSFB fallback fails when the terminal does not return to the LTE network within the preset duration.

In the above solution, the detecting unit is further configured to detect a voice call state of the terminal in the TDSCDMA network under the emulated network environment.

A third aspect of the embodiments of the present invention provides a fall-back result detection apparatus for a circuit switched fall-back CSFB, including: a processor and a memory for storing a computer program operable on the processor, wherein the processor is operable to perform the steps of the method when executing the computer program.

A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the method described above.

In the method, the apparatus, and the storage medium for detecting a fallback result of a CSFB, according to the embodiments of the present invention, in a CSFB procedure executed based on indication information indicating that a terminal performs a voice service using a preset CSFB optimization scheme, information indicating that a radio access bearer establishment failure for the terminal is detected; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed; detecting a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails; determining whether the CSFB has successfully fallen back based at least on the voice call state; the indication information is carried in an attachment acceptance message sent by the LTE base station to the terminal; the attachment acceptance message is sent by the LTE base station after the terminal sends an attachment request message to the LTE base station; the CSFB procedure is triggered to be executed when the terminal receives the paging message sent by the LTE base station. By adopting the scheme provided by the embodiment of the invention, the voice call state in the TDSCDMA network in the CSFB process can be detected under the scene that Radio Link Failure (RLF) occurs in the PS domain access request process after the terminal falls back to the TDSCDMA cell appointed by the network side, so that the falling back result of the CSFB can be finally determined, and thus, in the subsequent CSFB process, the optimization scheme can be further perfected to improve the success probability of the CSFB process, and the call experience of a user can be improved.

Drawings

Fig. 1 is a schematic flow chart of a method for detecting a fallback result of a CSFB according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a method for detecting a fallback result in a CSFB according to an embodiment of the present invention;

FIG. 3 is a first diagram of an emulation code in accordance with an embodiment of the present invention;

FIG. 4 is a second diagram of an emulation code of an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a fall-back result detection apparatus of a CSFB according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating a hardware structure of a fall-back result detection apparatus of a CSFB according to an embodiment of the present invention.

Detailed Description

So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.

Under normal conditions, the terminal with the CSFB function can search the LTE network when being started, complete the joint registration of the LTE/2G network and carry out voice calling and called.

The CSFB procedure comprises three phases: 1) the UE initiates a call (corresponding to MO) in the LTE network or receives a paging (corresponding to MT); 2) the UE falls back under the guidance of an LTE network and searches a proper GSM cell/WCDMA cell for 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 scale and the network quitting and replating of part of old GSM/TD-SCDMA base stations, the configuration of the original network deployment on the signaling side of the base station is not updated in real time, and the configuration information issued by the network to the UE is inconsistent with the actual deployment situation, so that various abnormal situations, such as incapability of connection, failure of repeated connection, etc., occur in the voice call across systems (inter rat), which is CSFB.

In order to solve the call problem caused by the incompatible situation of network deployment, various optimization means are adopted by terminal manufacturers to improve the call experience, and in order to verify the rationality of the CSFB optimization scheme, it is necessary to detect the CSFB process in an abnormal scene so as to improve the CSFB optimization scheme in a targeted manner.

The CSFB fallback scheme adopts a 3GPP R8 redirection fallback scheme, and during a CSFB deployment process, a CSFB procedure is probabilistically abnormal due to a problem of parameter configuration. Therefore, the embodiment of the present invention provides a method for detecting a CSFB fallback result in a scenario where a Radio Link Failure (RLF) occurs in a PS domain access request procedure after a terminal falls back to a TDSCDMA cell specified by a network side.

In various embodiments of the present invention, in a CSFB procedure executed based on indication information indicating that a terminal employs a preset CSFB optimization scheme for voice services, radio access bearer establishment failure information for the terminal is detected; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed; detecting a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails; determining whether the CSFB has successfully fallen back based at least on the voice call state; the indication information is carried in an attachment acceptance message sent by the LTE base station to the terminal; the attachment acceptance message is sent by the LTE base station after the terminal sends an attachment request message to the LTE base station; the CSFB procedure is triggered to be executed when the terminal receives the paging message sent by the LTE base station.

By adopting the scheme provided by the embodiment of the invention, the voice call state in the TDSCDMA network in the CSFB process can be detected under the scene that Radio Link Failure (RLF) occurs in the PS domain access request flow after the terminal falls back to the TDSCDMA cell appointed by the network side, so that the fall back result of the CSFB can be finally determined, and thus, in the subsequent CSFB process, the optimization scheme can be further perfected to improve the success probability of the CSFB process, and the call experience of a user can be improved.

Fig. 1 is a schematic flow chart of a method for detecting a fallback result of a CSFB provided in an embodiment of the present invention, and as shown in fig. 1, the method for detecting a fallback result of a CSFB includes the following steps:

step 101: detecting radio access bearer establishment failure information aiming at a terminal in a CSFB (Circuit switched fallback) executing process based on indication information indicating that the terminal adopts a preset CSFB optimization scheme to perform voice service;

here, the radio access bearer establishment failure information is establishment failure information of a radio access bearer in a packet switched PS domain resource request flow initiated by the terminal after completion of establishment of a voice call based on a circuit switched CS domain in a TDSCDMA network.

In practical application, a network environment applied to the embodiment of the invention can be constructed in a laboratory simulation mode, that is, the scene where the terminal is located in the embodiment of the invention is obtained in a simulation mode, so that on one hand, a worker does not need to go to a field for detection, and therefore, the cost of the worker can be reduced; on the other hand, the scene of the site may include other factors, so as to affect the detection result, so that the simulation network according to the embodiment of the present invention can stably reproduce the CSFB abnormal scene occurring in the scene of the site, and can eliminate the influence of other factors on the detection result in the scene described in the embodiment of the present invention.

Based on this, in some embodiments, a voice call state of the terminal in the TDSCDMA network in an emulated network environment is detected.

Step 102: detecting a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails;

step 103: and judging whether the CSFB falls back successfully at least based on the voice call state.

In an embodiment, when it is determined that the voice call of the terminal in the TDSCDMA network is interrupted (i.e., not continued) based on the voice call state, it is determined that the CSFB fallback fails.

In another specific embodiment, after the voice call in the TDSCDMA network is ended, detecting whether the terminal returns to the LTE network within a preset time period; and when the terminal does not return to the LTE network within the preset time length, determining that the CSFB falls back to failure. Here, in practical applications, the preset time period may be set as needed.

In a specific scenario, when it is detected that the voice call of the terminal in the TDSCDMA network is not interrupted, that is, the terminal maintains the voice call after the voice call of the TDSCDMA network is established, after the voice call in the TDSCDMA network is ended, it is detected whether the terminal returns to the LTE network within a preset time period; and when the terminal does not return to the LTE network within the preset time length, determining that the CSFB falls back to failure. Correspondingly, when the terminal returns to the LTE network within the preset time length, the CSFB fallback success is determined. That is to say, when it is detected that the voice call of the terminal in the TDSCDMA network is not interrupted, that is, the terminal maintains the voice call after the voice call of the TDSCDMA network is established, and after the voice call in the TDSCDMA network is ended, the terminal returns to the LTE network within the preset time period, it is determined that the CSFB fallback is successful.

Here, in actual application, whether the voice call of the terminal in the TDSCDMA network is interrupted or not may be detected through related signaling, and similarly, whether the terminal returns to the LTE network within a preset time duration or not may be detected through related signaling, and whether the voice call of the terminal is ended or not may be determined through related signaling.

In this way, the method provided in the embodiment of the present invention detects radio access bearer establishment failure information for an indication terminal in a CSFB procedure executed based on indication information indicating that the indication terminal adopts a preset CSFB optimization scheme for a voice service; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed; detecting a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails; determining whether the CSFB has successfully fallen back based at least on the voice call state; the indication information is carried in an attachment acceptance message sent by the LTE base station to the terminal; the attachment acceptance message is sent by the LTE base station after the terminal sends an attachment request message to the LTE base station; the CSFB procedure is triggered and executed when the terminal receives a paging message sent by the LTE base station; by adopting the scheme provided by the embodiment of the invention, the voice call state in the TDSCDMA network in the CSFB process can be detected under the scene that Radio Link Failure (RLF) occurs in the PS domain access request flow after the terminal falls back to the TDSCDMA cell appointed by the network side, so that the fall back result of the CSFB can be finally determined, and thus, in the subsequent CSFB process, the optimization scheme can be further perfected to improve the success probability of the CSFB process, and the call experience of a user can be improved.

In addition, the voice call state of the terminal in the TDSCDMA network under the simulation network environment is detected, a simulation mode is adopted, workers do not need to go to the site, and other factors influencing detection can be removed, so that the personnel cost can be greatly reduced, and meanwhile, the influence of other factors on the detection result under the scene described by the embodiment of the invention can be eliminated.

The invention is described in more detail below with reference to an application example.

In the embodiment of the application, a network environment is constructed through a simulation platform, and the network environment comprises a Frequency Division Duplex (FDD) -LTE cell, a TDSCDMA cell and a GSM cell; the LTE SIB is configured with TDSCDMA as neighbor cell information, the GSM cell is configured with a neighbor cell, and the LTE neighbor cell information is configured in the TDSCDMA SIB 18.

The abnormal scene of the application embodiment is as follows: the TDSCDMA cell appointed by the network side has radio link failure in the process of establishing the PS domain access request, and under the condition, the terminal can still utilize CS resources to complete CSFB, thereby verifying the validity and reasonability of the terminal side call optimization scheme.

Step 201: UE registers on an LTE cell and carries out an attachment process;

specifically, the UE is the MT, and after the UE is powered on, the UE first executes an Evolved Packet System (EPS) and International Mobile Subscriber Identity (IMSI) attach procedure.

In the process, the UE is triggered to send an Attach Request message (Attach Request) to the LTE base station, and an Attach Accept message (Attach Accept) sent by the LTE base station is received, wherein the Attach Accept message carries indication information for indicating the terminal to adopt a preset CSFB optimization scheme for voice service. Fig. 3 is a first schematic diagram of an emulation code according to an embodiment of the present invention, where: IMS voice over PS (V) ═ Not supported (0), and represents the instruction information.

Step 202: and the network side configures RRC Reconfiguration to prompt the UE to carry out measurement report MR and measure the TDSCDMA cell of the adjacent cell.

Step 203: the network side triggers the MT CSFB flow, the network side sends a Paging message (Paging) to the UE, and the CSFB flow is started;

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

Specifically, after receiving an initial address REQUEST (IAM) incoming message, a Mobile Switching Center (MSC) in the network sends an SGsAP-PAGING-REQUEST message to an Mobility Management Entity (MME) according to existing SGs association and MME information, where the SGsAP-PAGING-REQUEST message carries the following information: IMSI, Temporary Mobile Subscriber Identity (TMSI), service identifier (Serviceindicator), calling number, location area information.

After receiving the message, the MME sends a Paging message to the base station, and the base station initiates a Paging flow of an air interface. UE establishes connection and sends Extended Service Request message to MME, MME sends SGsAP-Service-Request message to MSC, MSC receives the message, and MSC does not resend paging Request message to MME. In order to avoid the overlong waiting time of the calling party in the call connection process, the MSC receives the SGs Service Request message containing the idle state indication and firstly informs the calling party that the calling party is in the connection process. The MME sends an Initial UE Context Setup message to the base station, wherein the Initial UE Context Setup message carries a CS feedback Indicator, and the CS feedback Indicator is used for indicating that the base station UE needs to fall back to a UMTS Terrestrial Radio Access Network (UTRAN) or a GSM/EDGE Radio Access Network (GERAN, GSM Radio Access Network) due to CSFB service.

In the attach procedure, the UE receives an LTE _ RRCConnectionRelease signaling, i.e., a redirection command, sent by the LTE base station. The redirection command carries the frequency point information of the specified TDSCDMA cell, namely the frequency point information of the target TDSCDMA cell.

As shown in fig. 4, the base station issues an R8 redirection command (rrcConnectionRelease _ R8(0)) to the UE, where the command carries the frequency point information of the target TDSCDMA cell, so that the UE can conveniently access the target TDSCDMA cell based on the frequency point information carried in the R8 redirection command.

Step 204: after the UE accesses the TDSCDMA cell according to the appointed frequency point information (namely the frequency point information of the target TDSCDMA cell), initiating an RRC Request, issuing CS call resources and a Radio Access Bearer (RAB) setup by a network side, and finishing the establishment of the voice call; at this time, simulation is carried out through a simulation platform: and a PS domain Radio Access Bearer (RAB) setup router, and simultaneously completing a routing area update RAU flow.

At this time, checking whether the voice call state of the CS domain is affected by the UE in this case; whether FastReturn can be successfully returned to the LTE network after the call is finished or not, namely whether the FastReturn can be successfully returned to the LTE network within the preset time or not.

Specifically, the method comprises the following steps:

step 205: checking whether the voice call state of the CS domain is not affected in this case, that is, detecting whether the UE can maintain the voice call in this case, if so, executing step 206; otherwise, indicating that the CSFB fallback fails, that is, the preset CSFB optimization scheme fails;

step 206: and detecting whether the UE returns to the LTE network within a preset time after the call is ended, if so, indicating that the CSFB falls successfully, otherwise, indicating that the CSFB falls failed.

Here, according to the preset CSFB optimization scheme, when the UE finishes normal conversation in the TDSCDMA network, the UE should quickly return to the LTE network.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a device for detecting a fallback result of a CSFB, where as shown in fig. 5, the device includes:

a detecting unit 51, configured to detect radio access bearer establishment failure information for a terminal in a CSFB procedure executed based on instruction information indicating that the terminal performs a voice service using a preset CSFB optimization scheme; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed; the terminal is also configured to detect a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails;

a determining unit 52 configured to determine whether the CSFB fallback is successful at least based on the voice call state;

In an embodiment, the determining unit 52 is further configured to determine that the CSFB fallback fails when it is determined that the voice call of the terminal in the TDSCDMA network is interrupted based on the voice call status.

In another specific embodiment, the detecting unit 51 is further configured to detect whether the terminal returns to the LTE network within a preset time after the voice call in the TDSCDMA network is ended;

correspondingly, the determining unit 52 is further configured to determine that the CSFB fallback fails when the terminal does not return to the LTE network within the preset time duration.

In another embodiment, the detecting unit 51 is further configured to detect a voice call state of the terminal in the TDSCDMA network in an emulated network environment.

In practical applications, the detecting unit 51 and the determining unit 52 are both implemented by a processor, wherein the processor may be a Central Processing Unit (CPU), a microprocessor unit (MPU), a Digital Signal Processor (DSP), or a programmable gate array (FPGA).

It should be noted that: in the CSFB fallback result detection apparatus according to the above embodiment, when performing the CSFB fallback result detection, only the above-mentioned division of the program modules is taken as an example, and in practical applications, the above-mentioned processing may be distributed to different program modules according to needs, that is, the internal structure of the apparatus may be divided into different program modules to complete all or part of the above-mentioned processing. In addition, the fall-back result detection apparatus of the CSFB and the fall-back result detection method of the CSFB provided in the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.

Based on the above hardware implementation of each unit in the CSFB fallback result detection apparatus, in order to implement the hardware implementation provided in the embodiment of the present invention, an embodiment of the present invention further provides a CSFB fallback result detection apparatus, as shown in fig. 6, where the apparatus includes: a processor 61 and a memory 62 configured to store computer programs capable of running on the processor,

wherein the processor 61 is configured to execute, when running the computer program, the following:

In an embodiment, the determining whether the CSFB fallback is successful based on the voice call state includes:

In another specific embodiment, the processor 61 is configured to execute, when running the computer program, the following steps:

In another embodiment, the detecting the voice call state of the terminal in the TDSCDMA network includes:

In practice, of course, the various components of the device are coupled together by a bus system 63, as shown in FIG. 6. It will be appreciated that the bus system 63 is used to enable communications among the components. The bus system 63 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 63 in FIG. 6.

Here, in practical applications, the memory may be implemented by any type of volatile or non-volatile storage device, or a combination thereof. The nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic Random Access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The described memory for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor described above may be a general purpose processor, a digital signal processor, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium that is located in a memory and that a processor reads information from the memory and in conjunction with its hardware performs the steps of the method previously described as applied to a media information handling system.

Embodiments of the present invention also provide a computer-readable storage medium, such as a memory, comprising a computer program, which is executable by a processor of a fall back result detection apparatus of a CSFB to perform the steps of the aforementioned method. The computer readable storage medium can be memory such as FRAM, ROM, programmable read only memory PROM, EPROM, EEPROM, Flashmemory, magnetic surface memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.

Further, the computer readable storage medium has a computer program stored thereon, wherein the computer program when executed by a processor realizes the steps of:

In another embodiment, the computer program when executed by the processor further performs the steps of:

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

In the embodiments provided in the present invention, it should be understood that the disclosed method and intelligent device may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one second processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Industrial applicability

In the embodiment of the invention, in the process of executing CSFB based on the indication information indicating that a terminal adopts a preset CSFB optimization scheme to perform voice service, the failure information of establishing a radio access bearer for the terminal is detected; the radio access bearer establishment failure information is the establishment failure information of the radio access bearer in the packet switching PS domain resource request flow initiated by the terminal after the voice call establishment based on the circuit switching CS domain in the TDSCDMA network is completed; detecting a voice call state of the terminal in the TDSCDMA network in a state that the establishment of a wireless access bearer fails; determining whether the CSFB has successfully fallen back based at least on the voice call state; the indication information is carried in an attachment acceptance message sent by the LTE base station to the terminal; the attachment acceptance message is sent by the LTE base station after the terminal sends an attachment request message to the LTE base station; the CSFB procedure is triggered and executed when the terminal receives a paging message sent by the LTE base station; by adopting the scheme provided by the embodiment of the invention, the voice call state in the TDSCDMA network in the CSFB process can be detected under the scene that Radio Link Failure (RLF) occurs in the PS domain access request flow after the terminal falls back to the TDSCDMA cell appointed by the network side, so that the fall back result of the CSFB can be finally determined, and thus, in the subsequent CSFB process, the optimization scheme can be further perfected to improve the success probability of the CSFB process, and the call experience of a user can be improved.

Claims

1. A method for detecting a fallback result of a Circuit Switched Fallback (CSFB), the method comprising:

the indication information is carried in an attachment acceptance message sent by the LTE base station to the terminal; the attachment acceptance message is sent by the LTE base station after the terminal sends an attachment request message to the LTE base station; the CSFB procedure is triggered and executed when the terminal receives a paging message sent by the LTE base station;

the determining whether the CSFB fallback is successful based on the voice call state includes:

if the configuration information sent to the terminal by the network side is different from the configuration information actually deployed, detecting that the voice call of the terminal in the TDSCDMA network is interrupted; and determining that the CSFB falls back in failure.

2. The method of claim 1, further comprising:

3. The method of claim 1, wherein the detecting the voice call state of the terminal in the TDSCDMA network comprises:

4. A fall-back result detection apparatus of a circuit switched fall-back CSFB, comprising:

the determining unit is further configured to detect that the voice call of the terminal in the TDSCDMA network is interrupted if the configuration information sent to the terminal by the network side is different from the configuration information actually deployed; and determining that the CSFB falls back in failure.

5. The detection device according to claim 4, wherein the detection unit is further configured to detect whether the terminal returns to the LTE network within a preset time after the voice call in the TDSCDMA network is ended;

6. The detection apparatus according to claim 5, wherein the detection unit is further configured to detect a voice call state of the terminal in the TDSCDMA network under the emulated network environment.

7. A fall-back result detection apparatus of a circuit switched fall-back CSFB, comprising: a processor and a memory for storing a computer program operable on the processor, wherein the processor is operable to perform the steps of the method of any of claims 1 to 3 when the computer program is executed.

8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 3.