CN107371203B

CN107371203B - Method for establishing call and related product

Info

Publication number: CN107371203B
Application number: CN201710750702.5A
Authority: CN
Inventors: 王旭康
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-08-28
Filing date: 2017-08-28
Publication date: 2020-06-05
Anticipated expiration: 2037-08-28
Also published as: CN107371203A

Abstract

The present disclosure provides a method of establishing a call and related products, the method comprising: sending a first call request to a first network device; receiving a Radio Resource Control (RRC) release message corresponding to the first call request, wherein the RRC release message comprises: a plurality of 2G frequency points; selecting a first frequency point from the plurality of 2G frequency points, sending an immediate assignment IA message to second network equipment corresponding to the first frequency point, and starting a first timer; if the first timer is overtime, cell reselection is initiated, whether a channel release message sent by a network side is received or not is judged, and if the channel release message is received, the first frequency point is filtered; and sending a second call request to the third network equipment, and receiving a call establishment message of the second call request sent by the third network equipment to establish the second call. The technical scheme provided by the invention has the advantage of improving the user experience.

Description

Method for establishing call and related product

Technical Field

The invention relates to the technical field of terminal equipment, in particular to a method for establishing a call and a related product.

Background

A Long Term Evolution (LTE) network is a full packet-switched network, and voice services are still important services for a Long time in the LTE network. In order to ensure that high-quality voice services can be smoothly developed on an LTE network, various standards organizations actively research and propose various solutions for voice services, and one possible form is that a terminal can implement voice services by using a Circuit Switched Fallback (CSFB) technology.

In LTE, when the CSFB scans at a designated frequency point, the GSM cell with the best signal strength is selected for access, and in some cases, the GSM cell with the best signal strength cannot implement access of a call, which results in that the call cannot be accessed, and affects user experience.

Disclosure of Invention

The embodiment of the invention provides a method for establishing a call and a related product, which can realize call access in a specific scene and improve the experience of a user.

In a first aspect, an embodiment of the present invention provides a method for establishing a call, where the method includes the following steps:

sending a first call request to a first network device;

receiving a Radio Resource Control (RRC) release message corresponding to the first call request, wherein the RRC release message comprises: a plurality of 2G frequency points;

selecting a first frequency point from the plurality of 2G frequency points, sending an immediate assignment IA message to second network equipment corresponding to the first frequency point, and starting a first timer;

if the first timer is overtime, cell reselection is initiated, whether a channel release message sent by a network side is received or not is judged, and if the channel release message is received, the first frequency point is filtered;

and sending a second call request to the third network equipment, and receiving a call establishment message of the second call request sent by the third network equipment to establish the second call.

Optionally, the filtering the first frequency point includes:

and storing the first frequency point in a preset filtering list, wherein the filtering list is used for storing the filtered or shielded frequency points.

Optionally, the method further includes:

and configuring a second timer for the first frequency point, and if the second timer is overtime, releasing the first frequency point.

Optionally, before filtering the first frequency point, the method further includes:

and displaying a selection instruction of the first frequency point, collecting a response of the selection instruction, and filtering the first frequency point if the response contains an instruction of filtering the first frequency point.

In a second aspect, a terminal is provided, which includes: the system comprises an Application Processor (AP) and a communication module connected with the AP;

the communication module is configured to send a first call request to a first network device, and receive a radio resource control RRC release message corresponding to the first call request, where the RRC release message includes: a plurality of 2G frequency points;

the AP is used for selecting a first frequency point from the plurality of 2G frequency points, controlling the communication module to send an immediate assignment IA message to second network equipment corresponding to the first frequency point, and starting a first timer; if the first timer is overtime, cell reselection is initiated, whether the communication module receives a channel release message sent by a network side is judged, and if the channel release message is received, the first frequency point is filtered;

the communication module is further configured to send a second call request to a third network device, and receive a call setup message of the second call request sent by the third network device to establish the second call.

Optionally, the terminal further includes:

a memory coupled to the AP, the memory comprising: the method comprises the steps of presetting a filtering list, wherein the filtering list is used for storing filtered or shielded frequency points;

and the AP is used for storing the first frequency point in the filtering list.

Optionally, the AP is further configured to configure a second timer for the first frequency point, and release the first frequency point if the second timer is overtime.

Optionally, the terminal further includes: the touch display screen is connected with the AP;

the touch display screen is used for displaying the selection indication of the first frequency point and collecting the response of the selection indication;

the AP is further configured to filter the first frequency point if the response includes an indication to filter the first frequency point.

In a third aspect, an apparatus for establishing a call is provided, the apparatus comprising: the processing unit and the transceiver unit are connected with the processing unit;

the transceiver unit is configured to send a first call request to a first network device, and receive a radio resource control RRC release message corresponding to the first call request, where the RRC release message includes: a plurality of 2G frequency points;

the processing unit is configured to select a first frequency point from the multiple 2G frequency points, control the transceiver unit to send an immediate assignment IA message to a second network device corresponding to the first frequency point, and start a first timer; if the first timer is overtime, cell reselection is initiated, whether the communication module receives a channel release message sent by a network side is judged, and if the channel release message is received, the first frequency point is filtered;

the transceiver unit is further configured to send a second call request to a third network device, and receive a call setup message of the second call request sent by the third network device to establish the second call.

Optionally, the apparatus further comprises:

a storage unit connected with the processing unit, the storage unit including: the method comprises the steps of presetting a filtering list, wherein the filtering list is used for storing filtered or shielded frequency points;

and the processing unit is used for storing the first frequency point in the filtering list.

Optionally, the processing unit is further configured to configure a second timer for the first frequency point, and release the first frequency point if the second timer is overtime.

Optionally, the apparatus further comprises: the display unit is connected with the processing unit;

the display unit is used for displaying the selection indication of the first frequency point and collecting the response of the selection indication;

the processing unit is further configured to filter the first frequency point if the response includes an indication to filter the first frequency point.

In a fourth aspect, a computer-readable storage medium is provided, which is characterized by storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute the method provided in the first aspect.

In a fifth aspect, there is provided a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform the method provided by the first aspect.

The embodiment of the invention has the following beneficial effects:

it can be seen that, through the embodiment of the present invention, when a CSFB procedure is executed, if a first timer (e.g., T3216) of a dropped first cell is overtime, cell reselection is started, if a reselected second cell does not include a context of an MT call, and when a UE receives a channel release message sent by the second cell, the UE filters a first frequency point corresponding to the first cell (because it is determined that the first frequency point corresponding to the first cell is an abnormal frequency point at this time, call access cannot be achieved), and after filtering is successful, the UE does not select the first cell in a next call, so that the UE does not select the first cell that cannot be successfully called many times, which has the advantage of improving the probability of call access of the UE to other cells, and avoiding accessing the first cell that cannot be successfully called, so that the UE has the advantage of improving the experience of a user.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a CSFB service architecture.

Fig. 2 is a flow diagram of a CSFB service.

Fig. 3 is a flowchart illustrating a method for establishing a call according to an embodiment of the present invention.

Fig. 3A is a flowchart illustrating a method for establishing a call according to another embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a device for establishing a call according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a mobile phone disclosed in the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," and "fourth," etc. in the description and claims of the invention and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The mobile terminal described in the embodiment of the present invention may include a smart Phone (such as an Android Phone, an iOS Phone, a Windows Phone, etc.), a tablet computer, a palm computer, a notebook computer, a mobile internet device (MID, mobile internet Devices), a wearable device, and the like, and the mobile terminal is merely an example, but not an exhaustive list, and includes but is not limited to the mobile terminal described above.

Referring to fig. 1, fig. 1 may be a schematic diagram of a CSFB service architecture, as shown in fig. 1, the ue, an evolved Node B (eNB), a GSM EDGE Radio Access Network (GERAN), a general packet service Support Node (SGSN), a Mobility Management Entity (MME), and a Mobile Switching Center (MSC). For a UE, the UE may communicate with an eNB through a wireless communication network (e.g., an LTE network), the eNB is connected with an MME, the MME is connected with an MSC, and in addition, the UE may be connected with a GERAN, a GERAN is connected with an SGSN, and the SGSN is connected with the MSC through another wireless communication network (e.g., 2G). That is, the UE can choose to connect to the MSC through either the LTE network or the 2G network, and for the 2G network, it mainly carries voice traffic, and for the LTE network, it mainly carries data traffic.

Referring to fig. 2, fig. 2 is a CSFB service diagram, as shown in fig. 2, including the following steps:

step S200, the UE sends a call request (MT call) to the eNB, and the eNB forwards the call request to the MME.

Step S201, MME sends a circuit domain service notification to UE.

Step S202, the UE sends an extended service request to the MME.

Step S203, the eNB returns a Radio Resource Control (RRC) connection release request to the UE.

And step S204, the UE falls back to the 2G network according to the 2G frequency point.

Step S205, the Base Station Controller (BSC) sends a system notification message to the UE.

Step S206, the UE sends an Immediate Assignment (IA) to the BSC.

Step S207, the BSC sends Call Control SETUP (Call Control _ SETUP, CC _ SETUP) to the UE, and the Call is successful.

Between step S206 and step S207 shown in fig. 2, if the UE receives a cell with asymmetric uplink and downlink power after the interference, and the MT CSFB falls back under this special condition, the UE may encounter a call failure, and after waiting for time out of T3126, the UE performs cell reselection again, for example, the reselected cell (for example, the MSC where the reselected cell is located has no context (context) of the previous MT call), and the reselected cell may have an MT failure. Therefore, the UE cannot realize the call, and the user experience is influenced.

Referring to fig. 3, fig. 3 is a method for establishing a call according to an embodiment of the present invention, where the method is implemented in a network scenario as shown in fig. 1, and the method is shown in fig. 3, and includes the following steps:

step S301, the UE transmits the MT call to the eNB, and the eNB transmits the MT call to the MME.

Step S302, MME sends a Circuit Switched service notification (English) to UE.

Step S303, the MME sends an extended service request to the UE.

Step S304, the eNB sends an RRC connection release message to the UE, wherein the RRC connection release message comprises: and the CSFB GREAN frequency point is a 2G frequency point.

Step S305, the UE selects a first cell corresponding to the first frequency point according to the CSFB GREAN frequency point fallback to the 2G network.

Step S306, the UE sends an IA message to the first BSC (i.e., BSC 1) of the first cell.

Step S307, the UE starts a T3216 timer, and the UE judges whether the T3216 timer is overtime.

Step S308, when the UE judges that the T3216 timer is overtime, the UE initiates cell reselection, and when the UE reselects a second cell corresponding to the second frequency point, the UE determines that the second cell has no context of an MT call.

Step S309, the UE determines whether to receive a channel release (channelrelease) sent by the second BSC (i.e., BSC 2). If the channel release is received, steps S310-S312 are executed.

Step S310, the UE acquires the first frequency point and the cause (cause) value, and the UE adds the first frequency point to a local database and filters the first frequency point.

Step S311, after the UE successfully filters the first frequency point, dials the next call.

Step S312, the UE receives the CC _ SETUP corresponding to the next MT call, and determines that the call of the next MT call is successful.

According to the technical scheme provided by the invention, when the UE executes the CSFB process, the T3216 of the fallen first cell is overtime, the cell reselection is started, if the reselected second cell does not contain the context of the MT call, when the UE receives a channel release message sent by the second cell, the UE filters a first frequency point corresponding to the first cell (because the first frequency point corresponding to the first cell is determined to be an abnormal frequency point at the moment, call access cannot be realized), and after the filtering is successful, the UE cannot select the first cell in the next call, so that the UE cannot select the first cell which cannot be successfully called for many times, the probability that the call of the UE is accessed to other cells is improved, the first cell which cannot be successfully called is avoided being accessed, and the probability of call access is improved, and the experience degree of the user is improved.

Optionally, the implementation method of step S313 may specifically be:

and the UE stores the first frequency point into a pre-configured filtering list, wherein the filtering list is used for storing the filtered frequency point information.

The technical scheme realizes automatic filtering of the first frequency point, and has the advantages of automatically filtering the frequency points which cannot be successfully accessed without user selection.

Optionally, the method may further include:

and the UE configures another timer for the first frequency point, and if the other timer is overtime, the first frequency point is deleted from the filtering list.

The technical scheme is to avoid filtering the first frequency point for a long time, because for the technical scene, the UE aimed at by the technical scene is interfered and then the uplink and downlink power of the cell is asymmetric, the situation can not exist for a long time and has certain time efficiency, if the first frequency point is filtered for a long time, the first frequency point can be ignored when the UE possibly can be accessed to the corresponding cell through the first frequency point, so that another timer is arranged, when the other timer is overtime, the first frequency point is deleted from the filtering list, and thus, the first frequency point can not be filtered in subsequent calling, and the utilization rate of the frequency spectrum is improved.

Optionally, before step S313, the method may further include:

the UE displays the selection indication of the first frequency point, receives a response of the selection indication, executes the step S313 if the response includes an indication to filter the first frequency point, does not execute the step S313 if the response does not include an indication to filter the first frequency point, and ends the operation.

The response may be specifically a touch signal, and the touch signal may be a touch signal indicating whether the selection instruction is selected, for example, a selection button may be displayed, and whether the selection button has a pressed signal is detected to determine whether the instruction for filtering the first frequency point is included, for example, if the selection button has a pressed signal, the instruction for filtering the first frequency point is determined, and if the selection button does not have a pressed signal, the instruction for not filtering the first frequency point is determined.

Referring to fig. 3A, fig. 3A is a method for establishing a call according to another embodiment of the present invention, where the method is implemented in the following technical scenarios, and a 2G frequency point in this embodiment has 5 frequency points, which may specifically include: 75. 85, 95, 100, 105, and their corresponding Received Signal Strength Indication (RSSI) ranges from strong to weak, i.e., RSSI₇₅>RSSI₈₅>RSSI₉₅>RSSI₁₀₀>RSSI₁₀₅. It is assumed that the 75 frequency bins correspond to a first cell, the 85 frequency bins correspond to a second cell, the 2G base station of the first cell is BSC1, and the 2G base station of the second cell is BSC 2. The method is shown in fig. 3A and comprises the following steps:

in step S301A, the UE transmits an MT call to the eNB, and the eNB transmits the MT call to the MME.

Step S302A, the MME sends a circuit domain service notification to the UE.

Step S303A, the MME sends an extended service request to the UE.

Step S304A, the eNB sends an RRC connection release message to the UE, where the RRC connection release message includes: 2G frequency points (75, 85, 95, 100, 105).

Step S305A, the UE falls back to the 2G network according to the CSFB GREAN frequency point, detects the RSSI of the 2G frequency point, and selects the first cell corresponding to the 75 frequency point with the strongest RSSI.

In step S306A, the UE sends an IA message to BSC 1.

Step S307A, the UE starts a T3216 timer.

Step S308A, when the UE determines that the T3216 timer is out of time, the UE initiates cell reselection, and when the UE reselects the second cell corresponding to the second 85 frequency point of the RSSI, it is determined that the second cell has no context of the MT call.

Step S309A, the UE determines whether to receive a channel release from the BSC2 (second cell), and if the channel release is received, executes steps S310A-S312A.

Step S310A, the UE obtains the 75 frequency points and the reason values, adds the 75 frequency points into the local database, and filters the 75 frequency points.

Step S311A, after the UE judges that the 75 frequency points are successfully filtered, the UE dials the next call, and the UE selects the second cell corresponding to the strongest 85 frequency point in the RSSI, and initiates a call to the BSC 2.

In step S312A, the UE receives the CC _ SETUP sent by the BSC2 and establishes a call.

The technical scheme provided by the invention is that when the UE executes the CSFB process, the T3216 of a fallen first cell is overtime, cell reselection is started, if a reselected second cell does not contain the context of an MT call, when the UE receives a channel release message sent by the second cell, the 75 frequency points corresponding to the first cell are determined to be abnormal frequency points, the 75 frequency points corresponding to the first cell are filtered (because the 75 frequency points corresponding to the first cell are determined to be abnormal frequency points at this time, call access cannot be realized), after filtering is successful, the UE cannot select the first cell in the next call, so that the situation that the UE selects the first cell which cannot be successfully called for many times is avoided, the UE can select the second cell corresponding to 85 in the next call, call access to the second cell is realized, and the probability that the call of the UE is accessed to other cells is improved, and the first cell which cannot be successfully called is avoided, therefore, the method has the advantages of improving the probability of call access and further improving the experience of the user.

Referring to fig. 4, fig. 4 provides a terminal including: an application processor AP401 and a communication module 402 connected with the AP 501;

a communication module 402, configured to send a first call request to a first network device, and receive a radio resource control, RRC, release message corresponding to the first call request, where the RRC release message includes: a plurality of 2G frequency points.

The first network device may be a 4G network device, such as an eNB, the RRC release message of the first call request may also be sent by the eNB, and for interaction of messages between the call request and the RRC release message, reference may be made to the description of the embodiment shown in fig. 3, which is not described herein again.

The AP401 is configured to select a first frequency point from the multiple 2G frequency points, control the communication module to send an IA immediate assignment message to a second network device corresponding to the first frequency point, and start a first timer; if the first timer is overtime, cell reselection is initiated, whether the communication module receives a channel release message sent by a network side is judged, and if the channel release message is received, the first frequency point is filtered;

the second network device may be a 2G network device, and may specifically be a BSC, and the first timer may specifically be a T3216 timer. The channel release message may be sent by a cell BSC reselecting the second frequency point.

The communication module 402 is further configured to send a second call request to the third network device, and receive a call setup message of the second call request sent by the third network device to establish the second call.

The third network device may be a BSC of a second frequency point for cell reselection, and a specific implementation method may refer to the description of the example shown in fig. 3, which is not described herein again.

Optionally, the terminal further includes:

a memory 403, the memory 403 being connected to the AP401, the memory comprising: the method comprises the steps of presetting a filtering list, wherein the filtering list is used for storing filtered or shielded frequency points;

the AP401 is configured to store the first frequency point in the filtering list.

Optionally, the AP401 is further configured to configure a second timer for the first frequency point, and release the first frequency point if the second timer is overtime.

Optionally, the terminal further includes: a touch display screen 404, wherein the touch display screen 404 is connected with the AP 401;

the touch display screen 404 is configured to display a selection indication of the first frequency point and collect a response of the selection indication;

the AP401 is further configured to filter the first frequency point if the response includes an indication to filter the first frequency point.

When the terminal executes the CSFB process, the T3216 of the fallen first cell (i.e. the second network device corresponding to the first frequency point) is overtime, cell reselection is started, if the reselected second cell does not contain the context of the MT call, the UE filters the first frequency point corresponding to the first cell when receiving the channel release message sent by the second cell (because it is determined that the first frequency point corresponding to the first cell is an abnormal frequency point, call access cannot be achieved), after the filtering is successful, the UE does not select the first cell in the next call, thus avoiding the UE from selecting the first cell which can not be successfully called for many times, therefore, the method and the device have the advantages that the opportunity that the call of the UE is accessed to other cells is improved, the first cell which cannot be successfully called is avoided being accessed, the call access probability is improved, and the user experience is improved.

Referring to fig. 5, fig. 5 provides a device for establishing a call, and the implementation method, technical term definition or refinement of the device may be referred to the description of the embodiment shown in fig. 4. The apparatus comprises: a processing unit 501, and a transceiver unit 502 connected to the processing unit 501;

a transceiver 502, configured to send a first call request to a first network device, and receive a radio resource control RRC release message corresponding to the first call request, where the RRC release message includes: a plurality of 2G frequency points.

A processing unit 501, configured to select a first frequency point from the multiple 2G frequency points, control the transceiver unit 502 to send an IA immediate assignment message to a second network device corresponding to the first frequency point, and start a first timer; if the first timer is overtime, cell reselection is initiated, whether the transceiver unit 502 receives a channel release message sent by a network side is judged, and if the channel release message is received, the first frequency point is filtered;

the transceiving unit 502 is further configured to send a second call request to a third network device, and receive a call setup message of the second call request sent by the third network device to establish the second call.

Optionally, the apparatus further comprises:

a storage unit 503, connected to the processing unit, the storage unit including: the method comprises the steps of presetting a filtering list, wherein the filtering list is used for storing filtered or shielded frequency points;

a processing unit 501, configured to store the first frequency point in the filtering list.

Optionally, the processing unit 501 is further configured to configure a second timer for the first frequency point, and release the first frequency point if the second timer is overtime.

Optionally, the apparatus further comprises: a display unit 504 connected with the processing unit;

a display unit 504, configured to display a selection indication of the first frequency point, and collect a response of the selection indication;

the processing unit 501 is further configured to filter the first frequency point if the response includes an indication to filter the first frequency point.

Fig. 6 is a block diagram illustrating a partial structure of a mobile phone related to a mobile terminal according to an embodiment of the present invention. Referring to fig. 6, the handset includes: radio Frequency (RF) circuit 910, memory 920, input unit 930, sensor 950, audio circuit 960, Wireless Fidelity (WiFi) module 970, application processor AP980, and power supply 990. Those skilled in the art will appreciate that the handset configuration shown in fig. 6 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 6:

the input unit 930 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 930 may include a touch display 933, a fingerprint recognition device 931, and other input devices 932. The fingerprint recognition device 931 is coupled to the touch display screen 933. The input unit 930 may also include other input devices 932. In particular, other input devices 932 may include, but are not limited to, one or more of physical keys, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The AP980 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions and processes of the mobile phone by operating or executing software programs and/or modules stored in the memory 920 and calling data stored in the memory 920, thereby integrally monitoring the mobile phone. Optionally, AP980 may include one or more processing units; alternatively, the AP980 may integrate an application processor that handles primarily the operating system, user interface, and applications, etc., and a modem processor that handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the AP 980.

Further, the memory 920 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

RF circuitry 910 may be used for the reception and transmission of information. In general, the RF circuit 910 includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 910 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

Specifically, the RF circuit 910 is configured to send a first call request to a first network device, and receive a radio resource control RRC release message corresponding to the first call request, where the RRC release message includes: a plurality of 2G frequency points.

The AP980 is configured to select a first frequency point from the multiple 2G frequency points, control the RF circuit 910 to send an immediate assignment IA message to a second network device corresponding to the first frequency point, and start a first timer; if the first timer is overtime, cell reselection is initiated, whether the RF circuit 910 receives a channel release message sent by the network side is determined, and if the channel release message is received, the first frequency point is filtered;

the RF circuit 910 is further configured to send a second call request to a third network device, and receive a call setup message of the second call request sent by the third network device to establish the second call.

The memory 920 may also include: the method comprises the steps of presetting a filtering list, wherein the filtering list is used for storing filtered or shielded frequency points; AP980, which is used for storing the first frequency point in the filtering list.

And the AP980 is further configured to configure a second timer for the first frequency point, and release the first frequency point if the second timer is overtime.

A touch display screen 933, configured to display a selection indication of the first frequency point and collect a response of the selection indication;

the AP980 is further configured to filter the first frequency bin if the response includes an indication to filter the first frequency bin.

The handset may also include at least one sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the touch display screen according to the brightness of ambient light, and the proximity sensor may turn off the touch display screen and/or the backlight when the mobile phone moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry 960, speaker 961, microphone 962 may provide an audio interface between a user and a cell phone. The audio circuit 960 may transmit the electrical signal converted from the received audio data to the speaker 961, and the audio signal is converted by the speaker 961 to be played; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal, and the electrical signal is received by the audio circuit 960 and converted into audio data, and the audio data is processed by the audio playing AP980, and then sent to another mobile phone via the RF circuit 910, or played to the memory 920 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 970, and provides wireless broadband Internet access for the user. Although fig. 6 shows the WiFi module 970, it is understood that it does not belong to the essential constitution of the handset, and can be omitted entirely as needed within the scope not changing the essence of the invention.

The handset also includes a power supply 990 (e.g., a battery) for supplying power to various components, and optionally, the power supply may be logically connected to the AP980 via a power management system, so that functions of managing charging, discharging, and power consumption are implemented via the power management system.

Although not shown, the mobile phone may further include a camera, a bluetooth module, a light supplement device, a light sensor, and the like, which are not described herein again.

In the embodiment shown in fig. 3, the method flow of each step may be implemented based on the structure of the mobile phone.

In the embodiments shown in fig. 4 or fig. 5, the functions of the units can be implemented based on the structure of the mobile phone.

It can be seen that, according to the embodiment of the present invention, the mobile terminal allocates different priorities to different biometric identification sequences, and within a set time, if the type of the second application program to be started is different from that of the first application program, the multi-biometric identification operation needs to be executed again, thereby avoiding the problem that the highest priority is directly given to the different types of application programs, which affects the security.

Embodiments of the present invention also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the methods for establishing a call as described in the above method embodiments.

Embodiments of the present invention also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods of establishing a call as set out in the above method embodiments.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that the acts and modules illustrated are not necessarily required to practice the invention.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of 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 shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

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, 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, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module.

The integrated units, if implemented in the form of software program modules and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.

The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A method for establishing a call, the method comprising the steps of:

when circuit switched fallback is executed, a first call request is sent to first network equipment;

selecting a first frequency point from the plurality of 2G frequency points, sending an immediate assignment IA message to second network equipment corresponding to the first frequency point, and starting a first timer; the second network equipment is a base station controller;

if the first timer is overtime, cell reselection is initiated, whether a channel release message sent by a network side is received or not is judged, if the channel release message is received, the first frequency point is determined to be an abnormal frequency point, and the first frequency point is stored in a preset filtering list, wherein the filtering list is used for storing filtered or shielded frequency points; configuring another timer for the first frequency point, and if the another timer is overtime, deleting the first frequency point from the filtering list;

after the first frequency point is filtered, a second call request is sent to a third network device according to the frequency points obtained after the plurality of 2G frequency points are filtered, and a call establishment message of the second call request sent by the third network device is received to establish the second call.

2. The method according to claim 1, wherein before filtering the first frequency point, the method further comprises:

3. A terminal, characterized in that the terminal comprises: the system comprises an Application Processor (AP) and a communication module connected with the AP;

the communication module is configured to send a first call request to a first network device when performing a circuit switched fallback, and receive a radio resource control RRC release message corresponding to the first call request, where the RRC release message includes: a plurality of 2G frequency points;

the AP is used for selecting a first frequency point from the plurality of 2G frequency points, controlling the communication module to send an immediate assignment IA message to second network equipment corresponding to the first frequency point, and starting a first timer; the second network equipment is a base station controller; if the first timer is overtime, cell reselection is initiated, whether a communication module receives a channel release message sent by a network side is judged, if the channel release message is received, the first frequency point is determined to be an abnormal frequency point, and the first frequency point is stored in a preset filtering list, wherein the filtering list is used for storing filtered or shielded frequency points; configuring another timer for the first frequency point, and if the another timer is overtime, deleting the first frequency point from the filtering list;

and the communication module is further configured to send a second call request to a third network device according to the frequency points obtained after the filtering of the plurality of 2G frequency points after the filtering of the first frequency point, and receive a call establishment message of the second call request sent by the third network device to establish the second call.

4. The terminal of claim 3, further comprising: the touch display screen is connected with the AP;

5. An apparatus for establishing a call, the apparatus comprising: the processing unit and the transceiver unit are connected with the processing unit;

the transceiver unit is configured to send a first call request to a first network device when performing a circuit switched fallback, and receive a radio resource control RRC release message corresponding to the first call request, where the RRC release message includes: a plurality of 2G frequency points;

the processing unit is configured to select a first frequency point from the multiple 2G frequency points, control the transceiver unit to send an immediate assignment IA message to a second network device corresponding to the first frequency point, and start a first timer; the second network equipment is a base station controller; if the first timer is overtime, cell reselection is initiated, whether the transceiver unit receives a channel release message sent by a network side is judged, if the channel release message is received, the first frequency point is determined to be an abnormal frequency point, and the first frequency point is stored in a preset filtering list, wherein the filtering list is used for storing filtered or shielded frequency points; configuring another timer for the first frequency point, and if the another timer is overtime, deleting the first frequency point from the filtering list;

and the transceiver unit is further configured to send a second call request to a third network device according to the frequency points obtained after the filtering of the plurality of 2G frequency points after the filtering of the first frequency point, and receive a call establishment message of the second call request sent by the third network device to establish the second call.

6. A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-2.