CN112637798B

CN112637798B - Communication method and terminal

Info

Publication number: CN112637798B
Application number: CN201910907686.5A
Authority: CN
Inventors: 张琦; 马琰斌; 陈明辉; 罗飞
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2023-06-20
Anticipated expiration: 2039-09-24
Also published as: WO2021057263A1; CN112637798A

Abstract

The embodiment of the application provides a call method and a terminal, wherein the method comprises the following steps: when a first voice call with a call target of a first SIM card is connected, the first terminal receives and prompts a second voice call with another call target of the first SIM card; the second voice call is sent to the first terminal after the network equipment transfers the voice call of the second terminal to the second SIM card to the first SIM card based on a call transfer request from the first terminal, wherein the call transfer request comprises identification information of the first SIM card; the call transfer request is sent to the network equipment after the first terminal receives the voice call of the second terminal to the second SIM card after the first terminal receives the first voice call. The switching between two paths of calls can be realized on the double-card double-standby terminal, and the scheme can be applied to the field of artificial intelligence.

Description

Communication method and terminal

Technical Field

The embodiment of the application relates to the field of communication, in particular to a communication method and a terminal.

Background

In the dual-card dual-standby terminal in the prior art, when the terminal is connected to the voice call of the subscriber identity module (Subscriber Identity Module, SIM) card 1, the terminal can also receive the voice call of the SIM card 2 (i.e. the call of other terminals to the SIM card 2). However, in the present dual-card dual-standby terminal, when receiving the voice call of the SIM card 2 while the voice call of the SIM card 1 is connected, if the call of the SIM card 2 is selected to be connected, the call of the SIM card 1 is hung up; if the voice call of SIM card 1 is selected to continue to be answered, the voice call of SIM card 2 will be dropped.

Disclosure of Invention

The application provides a call method and a terminal, which can realize normal switching of double-card call on a double-card double-standby terminal.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect, an embodiment of the present application provides a call method, where the method may include: when the first terminal is connected with a first voice call with a call target being a first SIM card, if the first terminal receives another terminal, such as a voice call of a second terminal to a second SIM card, the first terminal sends a call transfer request to the network device so as to request the network device to transfer the voice call of the second terminal to the second SIM card to the first SIM card. The network device responds to the call transfer request of the first terminal, namely, after transferring the call of the second terminal to the second SIM card to the first SIM card, the first terminal can be connected and prompts that another call connected with the first SIM card exists while connecting the call of the first SIM card.

That is, when the user answers the call of the first SIM card through the first terminal, the first terminal may also inform the user that another call of the first SIM card exists currently through a ring tone, vibration or a prompt manner displayed on a screen, and the original call target of the call is actually the second SIM card. Correspondingly, the user can select to answer another call and keep the current call, so that the voice call of the other SIM card (namely the second SIM card) is connected while the current call is not hung up, wherein the user can also selectively connect any call because both calls are not hung up, namely the switching between the two calls is realized.

By the mode, the double-card double-standby terminal can realize functions similar to those of a double-card double-pass terminal, namely, switching of communication between the double cards can be realized. Meanwhile, the implementation mode does not change the hardware structure of the terminal, and a call mode with low cost and simple implementation is further provided.

In one possible implementation manner, when the voice call (or call) of the first SIM card is connected to the first terminal, if the call of the second SIM card is received, as described above, the call manner in the embodiment of the present application may be implemented, that is, the voice call of the second SIM card is transferred to the first SIM card. Otherwise, if the first SIM card of the first terminal is not in communication, the first terminal receives the call of the second SIM card, and the first terminal may directly prompt the voice call of the second SIM card according to the communication mode in the prior art. That is, the condition that the first terminal performs call transfer of the call to the second SIM card, or may be called temporary call transfer, may be: the first terminal receives the call of the second SIM card while the first SIM card is in communication.

In a possible implementation manner, the condition that the first terminal implements temporary call forwarding of the call to the second SIM card may also support temporary call forwarding functions for both the first terminal and the network device.

In a second aspect, an embodiment of the present application further provides a call method, where the call method is applied to a terminal, and the terminal may include a first processor, a second processor, and a third processor, where the first processor is associated with a first SIM card, and the second processor is associated with a second SIM card. The method may include: the first processor may receive a second voice call targeting a second SIM card while the first processor is engaged in a first voice call targeting the first SIM card. At this time, the second processor detects that the first processor has connected the first voice call and is in communication, i.e., the first processor has preempted the RF resources of the terminal. The second processor may send a call transfer request to the network device requesting the network device to transfer the call target of the second voice call onto the first SIM card. The first processor may then receive the transferred second voice call, wherein the first processor is still engaged in the call of the first SIM card while receiving the transferred second voice call. Then, the first processor may report the presence of the transferred second voice call to the third processor, and the third processor may prompt the presence of the transferred second voice call.

In one possible implementation, the first processor may be a Modem, which is associated with the first SIM card, for receiving and processing information or voice calls of the first SIM card. The second processor may be a Modem associated with the second SIM card for receiving and processing information or voice calls from the second SIM card. And the third processor may be an application processor operable to cause the display or prompt on the terminal of the presence of the first voice call, the second voice call, and/or the transferred second voice call.

In a third aspect, embodiments of the present application also provide a terminal that may include one or more processors and memory. Wherein the processor and the memory communicate with each other through an internal connection path; the processor is configured to execute instructions stored in the memory. The processor, when executing instructions, causes the terminal to perform the method according to the first aspect or any one of the possible implementation manners of the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable medium storing a computer program comprising instructions for performing the method of the first aspect or any possible implementation of the first aspect.

In a fifth aspect, embodiments of the present application provide a computer program comprising instructions for performing the method of the first aspect or any possible implementation of the first aspect.

In a sixth aspect, embodiments of the present application provide a chip that includes a processing circuit, a transceiver pin. Wherein the transceiver pin and the processing circuit communicate with each other via an internal connection path, the processor performing the method of the first aspect or any one of the possible implementation manners of the first aspect to control the receiving pin to receive signals and to control the transmitting pin to transmit signals.

Drawings

FIG. 1 illustrates a schematic diagram of a communication system;

fig. 2 shows schematically a block diagram of a terminal;

FIG. 3 is a schematic flow chart of a call method according to an embodiment of the present disclosure;

FIG. 4 is a schematic flow chart of a call method according to an embodiment of the present disclosure;

FIG. 5a illustrates one of the schematic diagrams of a terminal interface;

FIG. 5b illustrates one of the schematic diagrams of a terminal interface;

FIG. 6 illustrates one of the schematic diagrams of a terminal interface;

FIG. 7 illustrates one of the schematic diagrams of a terminal interface;

FIG. 8 illustrates one of the schematic diagrams of a terminal interface;

FIG. 9 illustrates one of the schematic diagrams of a terminal interface;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

The terms first and second and the like in the description and in the claims of embodiments of the present application are used for distinguishing between different objects and not necessarily for describing a particular sequential order of objects. For example, the first target object and the second target object, etc., are used to distinguish between different target objects, and are not used to describe a particular order of target objects.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, the plurality of processing units refers to two or more processing units; the plurality of systems means two or more systems.

In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, before introducing the technical solutions in the embodiments of the present application, a brief description is first made of a technical background that may be involved.

A dual card terminal refers to a terminal that can use a plurality of SIM cards. The dual-card terminal can be further divided into dual-card dual-standby (Dual SIM Dual Standby, DSDS) and dual-card dual-pass (Dual SIM Dual Active, DSDA) according to different working modes.

The dual-card dual-pass terminal can use a dual-SIM card and two Radio Frequency (RF) systems, that is, each SIM card corresponds to one set of RF system and can be used for receiving the call or information of the corresponding SIM card so as to keep the dual cards working simultaneously. For example: when the SIM card 1 is in communication, the SIM card 2 can normally call and answer, and can switch between two communication paths under the condition that any communication path is not hung up. However, since the dual card dual pass terminal is provided with two sets of radio frequencies, the power consumption and the cost thereof are high, and the terminal is gradually out of the market.

A dual-card dual-standby (DSDS) terminal can use a dual SIM card and one set of radio frequency systems, that is, two SIM cards share one set of RF systems. Thus, a dual card will preempt the RF resources, i.e., while one card is using the RF resources, the other card cannot acquire the RF resources. For example: when the SIM card 1 is in call, the SIM card 2 can normally call, but when the user selects to answer the call of the SIM card, the call of the SIM card 1 can be hung up, namely, the double-card double-standby terminal in the prior art can not answer the call of another card under the condition that one call is not hung up.

In order to solve the problem that the dual-card dual-standby terminal cannot realize switching between two calls, the embodiment of the application provides a call method, which enables the dual-card dual-standby terminal to realize a function similar to that of a dual-card dual-pass terminal, namely, realize switching between two calls by transferring one call to a SIM card in call. It should be noted that the technical solution in the embodiment of the present application may be applied to a multi-card terminal as well, for example, a three-card three-standby (Triple SIM Triple Standby, TSTS), and only a dual-card two-standby terminal is used as an example in the present application.

Before describing the technical solution of the embodiments of the present application, a description is first given of the communication system of the embodiments of the present application with reference to the accompanying drawings. Referring to fig. 1, a schematic diagram of a communication system is provided in an embodiment of the present application. The communication system comprises network equipment, a terminal A, a terminal B and a terminal C. The terminal may be a mobile phone, a tablet, or other equipment with two or more SIM cards. A network device refers to a device in the core network, and may perform functions such as forwarding (or forwarding) voice calls, for example: an application server (Application Server, AS). It should be noted that, in practical applications, the number of network devices and terminals may be one or more, and the number of network devices and terminals in the communication system shown in fig. 1 is merely an adaptive example, which is not limited in this application.

Fig. 2 shows a schematic block diagram of a terminal according to an embodiment of the present application, where fig. 2 shows a schematic structural diagram when the terminal (e.g., terminal a, terminal B, and terminal C) is a mobile phone.

Fig. 2 shows a schematic block diagram of a master control device according to an embodiment of the present application, and fig. 2 shows a schematic structural diagram of the master control device when the master control device is a mobile phone.

As shown in fig. 2, the mobile phone 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, a subscriber identity module (subscriber identification module, SIM) card interface 195, and the like.

It should be understood that the structure illustrated in the embodiments of the present invention is not limited to the specific embodiment of the mobile phone 100. In other embodiments of the present application, the handset 100 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components may be provided. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a Modem processor (Modem), a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc.

It should be noted that, current smartphones all adopt a mode of application processor+coprocessor (CP), and the implementation of the phone function is mainly based on AP, and the CP provides a communication function. For example: the AP may store a computer program, such as an operating system and application programs, etc., to implement the functions defined by the computer program, e.g., the AP executes the operating system to implement the various functions of the operating system on the handset. The CP is generally used for enhancing the multimedia processing function of the mobile phone, and the AP and the CP are communicated with each other, so that the functions of calling, short message receiving and sending, surfing the internet and the like can be realized.

Alternatively, the CP may include a Modem processor, where the Modem processor may include one or more modems (modems) and each Modem is associated with a SIM card, that is, the Modem may process voice calls etc. of the associated SIM card, for example: listen or hang up and can also be used to read the required data from the SIM card, for example: a number of a SIM card, etc. For specific functional implementation reference is made to the following embodiments.

In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

Wherein the different processing units may be separate devices or may be integrated in one or more processors.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

In some embodiments, the processor 110 may include one or more interfaces for connecting the processor 110 with other modules.

It should be understood that the connection between the modules illustrated in fig. 2 is only illustrative, and is not limited to the structure of the mobile phone 100.

The charge management module 140 is configured to receive a charge input from a charger. The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 to power the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like.

The wireless communication function of the mobile phone 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the handset 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide solutions for wireless communication including 2G, 3G, 4G, 5G, etc. applied to the handset 100. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc. applied to the handset 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments, the antenna 1 and the mobile communication module 150 of the handset 100 are coupled, and the antenna 2 and the wireless communication module 160 are coupled, so that the handset 100 can communicate with a network and other devices through wireless communication technology. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) and/or a satellite based augmentation system (satellite based augmentation systems, SBAS).

The mobile phone 100 implements display functions through a GPU, a display 194, an application processor, and the like. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos, and the like. The display 194 includes a display panel. The camera 193 is used to capture still images or video. The external memory interface 120 may be used to connect external memory cards.

The internal memory 121 may be used to store computer executable program code including instructions. The internal memory 121 may include a storage program area and a storage data area. The storage program area may store an application program (such as a sound playing function, an image playing function, etc.) required for at least one function of the operating system, etc. The storage data area may store data (e.g., audio data, phonebook, etc.) created during use of the handset 100, etc. The processor 110 performs various functional applications and data processing of the mobile phone 100 by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.

The handset 100 may implement audio functions through an audio module 170, an application processor, and the like. Such as music playing, recording, etc.

The sensor module 180 may also include pressure sensors, touch sensors, and/or bone conduction sensors. The touch sensor may be disposed on the display screen 194, and the touch sensor and the display screen 194 form a touch screen, which is also referred to as a "touch screen". The touch sensor may be used to detect touch operations acting on or near it. The touch sensor may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194.

The keys 190 include a power-on key, a volume key, etc. The motor 191 may generate a vibration cue. The indicator 192 may be an indicator light, may be used to indicate a state of charge, a change in charge, a message indicating a missed call, a notification, etc.

The SIM card interface 195 is used to connect a SIM card. The SIM card may be inserted into the SIM card interface 195 or removed from the SIM card interface 195 to enable contact and separation with the handset 100. The handset 100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface 195 may support Nano SIM cards, micro SIM cards, and the like. The mobile phone 100 interacts with the network through the SIM card to realize functions such as call and data communication. In some embodiments, handset 100 employs esims, namely: an embedded SIM card. The eSIM card can be embedded in the handset 100 and cannot be separated from the handset 100.

Referring to fig. 1 and fig. 2, fig. 3 is a flow chart of a call method in an embodiment of the present application, and fig. 3 is a flow chart of the call method:

the terminal A supports more than two SIM cards, and is exemplified by a first SIM card (SIM card 1 for short) and a second SIM card (SIM card 2 for short), and the communication method of the application is applicable to terminals with three cards (three SIM cards) and more than three cards.

It should be further noted that, as described above, the terminal is provided with a plurality of SIM cards and a plurality of modems, and the plurality of modems correspond to (or are associated with) the plurality of SIM cards. As shown in fig. 3, a Modem1 is associated with the SIM card 1, and is used to implement functions such as processing a voice call to the SIM card 1, and a Modem2 is associated with the SIM card 2, and is used to implement functions such as processing a voice call to the SIM card 2. Specific functional implementations are seen in the specific embodiments.

It should be further noted that, the terminal (e.g., terminal a) described in the present application is described by taking a dual-card dual-standby terminal as an example. The dual-card dual-standby terminal is a terminal capable of receiving a voice call of the SIM card 2 while connecting the voice call of the SIM card 1. That is, when the Modem1 connects a voice call whose call target is the SIM card 1, the Modem2 may receive a voice call whose call target is the SIM card 2.

Alternatively, the SIM card 1 and/or the SIM card 2 may be a mobile SIM card, a corporate SIM card or a telecommunications SIM card, which is not limited in this application.

In step 101, terminal a negotiates with the network device to determine that the call forwarding function is supported.

Specifically, the terminal a may negotiate with the network device to determine that both the terminal a and the network device support a call transfer function (also referred to as a temporary call transfer function). That is, the solution of the present application can be effectively implemented only if both the terminal a and the network device support the call forwarding function. Otherwise, if any one of the terminal a and the network device does not support the call forwarding function, the terminal a will process according to the processing mode of the dual-card dual-standby terminal in the prior art when receiving the voice call of the SIM card 1 and/or the SIM card 2, i.e. the terminal a connects the voice call of one SIM card and hangs up the voice call of the other SIM card.

It should be noted that, the temporary call transfer function referred to in the present application means that voice calls of a plurality of SIM cards in a terminal may be transferred to each other, for example: the voice call of the SIM card 1 may be transferred to the SIM card 2, wherein the SIM card 1 and the SIM card 2 belong to the same terminal.

Optionally, the negotiation between the terminal a and the network device may be performed by using a Modem corresponding to each SIM card. In one example, modem1 successfully negotiates with the network device and Modem2 fails to negotiate with the network device. Then, in the subsequent process, the Modem1 may implement the call forwarding function described in the embodiments of the present application, that is, the Modem1 may forward the voice call of the SIM card 1 to the SIM card 2, and the Modem2 cannot forward the voice call of the SIM card 2 to the SIM card 1. That is, the voice call of the SIM card 2 can be handled only in the conventional dual card dual standby mode.

It should be noted that, as used herein, "voice call", "incoming call" or "telephone" refers to a voice call whose call target is a specified SIM card, that is, a voice call of SIM card 1 refers to a voice call whose call target is SIM card 1. For example: if the terminal B makes a voice call to the SIM card 1, the terminal will receive a voice call (or an incoming call) with the call target being the SIM card 1 through the Modem1, which is simply called as the Modem1 receiving the voice call of the SIM card 1 in this application, and so on. It should be further noted that "call transfer" as referred to herein may also be referred to as temporary call transfer, and is two techniques that are completely different from call transfer between two terminals in the prior art.

Still referring to fig. 3, the negotiation process between the terminal a and the network device may be initiated by the terminal or may be initiated by the network device.

Taking the SIM card 1 as an example, optionally, after determining that the Modem1 associated with the SIM card 1 supports the call forwarding function, a request may be sent to the network device to determine whether the network device also supports the call forwarding function.

In one example, the Modem1 may send capability indication information to the network device during a registration phase (that is, a phase in which the SIM card 1 registers with the IP multimedia subsystem (IP multimedia subsystem, IMS) network after the terminal a is powered on), where the capability indication information is used to indicate that the SIM card 1 (specifically, the Modem1 corresponding to the SIM card 1) supports a call forwarding function, and request whether the network device supports the call forwarding function. Alternatively, the capability indication information may be carried in a registration (Register) message. For example, referring to fig. 4, a schematic diagram of one possible flow of negotiation of Modem1 with a network device is shown. In fig. 4, if the Modem1 supports the call forwarding function, the Modem1 may carry a transfer (transfer) field in a Contact header field of a Register message sent to the network device in the registration stage, so as to indicate that the terminal supports the call forwarding function. The network equipment receives the Register message, detects that the Register message carries a transfer field, determines that the terminal A is a terminal supporting call transfer, and returns a Register 200 'OK message' to the terminal A after the network equipment detects that the network equipment supports the call transfer function, wherein the transfer field is carried in a Supported header field of the message so as to indicate that the network equipment also supports the call transfer function.

In another example, modem1 may also send capability indication information to the network device after registration is complete. For example, the Modem1 may carry capability indication information in a call message (Invite message) for indicating that the SIM card 1 (specifically, the Modem1 corresponding to the SIM card 1) supports the call forwarding function, and requesting whether the network device supports the call forwarding function. The network device receives the Invite message, recognizes the capability indicating information, determines that the terminal supports the call forwarding function, and returns a response message to the terminal after detecting that the network device also supports the call forwarding function, for example: 180ringing message. Optionally, the location of the capability indication information in the Register and/or Invite message may be set according to actual requirements, which is not limited in this application.

Optionally, after determining that the network device supports the call forwarding function, the network device may send capability indication information to the Modem1 associated with the SIM card 1 to indicate that the network device supports the call forwarding function.

In one example, the network device may negotiate with the SIM card 1 during the registration phase. In another example, the network device may also negotiate with the SIM card 1 after the SIM card 1 completes registration and accesses the network. Optionally, the network device sends capability indication information to the Modem1, for indicating that the network device supports the call forwarding function. The capability indication information may be carried in a message sent by the network device during the registration phase. Optionally, the capability indication information may also be carried in a calling message sent by the network device to the SIM card 1. The specific negotiation time and the bearing mode of the capability indication information can be set according to actual requirements, and the application is not limited. Optionally, after receiving the capability indication information sent by the network device and determining that the terminal also supports the call transfer function, the terminal can determine that the negotiation is successful without returning response information to the network device.

Optionally, after determining that the negotiation is successful, the terminal may set call transfer permission indication information indicating that the negotiation is successful, that is, that both the terminal and the network device indicate the call transfer function, in the configuration.

In this application, the description will be continued by taking the case that the SIM card 1 (specifically, modem 1) and the SIM card 2 (specifically, modem 2) are successfully negotiated with the network device.

In step 102, terminal a connects to the voice call of SIM card 1.

Specifically, the terminal B makes a voice call to the SIM card 1 in the terminal a, and the Modem1 receives the voice call of the SIM card 1 (specifically, the voice call or the incoming call of the SIM card 1 is targeted for the call) through the antenna, and connects the voice call of the SIM card 1.

Step 103, terminal a receives the voice call of SIM card 2.

Specifically, after the terminal a connects the voice call of the SIM card 1 through the Modem1, the terminal C makes the voice call to the SIM card 2 in the terminal a, and the Modem2 receives the voice call of the SIM card 2 through the antenna (specifically, the voice call or the incoming call with the call target being the SIM card 2).

Optionally, after receiving the voice call from the SIM card 2, the terminal a determines whether the call forwarding condition is satisfied. If the condition is satisfied, the process proceeds to step 104. Optionally, call forwarding conditions include, but are not limited to:

1) The SIM card 1 is in a call. That is, terminal a currently puts through a voice call with the call destination of SIM card 1 through Modem 1.

2) Both Modem2 and network equipment support call forwarding functions. That is, in step 101, the Modem2 successfully negotiates with the network device, and optionally, the Modem2 may determine that both the Modem2 and the network device support the call forwarding function by detecting the configured call forwarding permission indication information.

3) The Modem2 can obtain the identification information of the SIM card 1. Alternatively, the identification information of the SIM card 1 is the number of the SIM card 1. Optionally, when the Modem1 completes the stage of registering the SIM card 1 in the network, the Modem1 may obtain the number of the SIM card 1, and cache the obtained number of the SIM card 1 in the cache of the terminal a, and the Modem2 may obtain the number of the SIM card 1 from the cache of the terminal a. The specific manner in which the Modem obtains the number of the SIM card can refer to the prior art, and the present application is not limited.

It should be noted that, if any of the above conditions is not satisfied, the call transfer flow ends, and the Modem2 reports to the AP that the SIM card 2 has a voice call, that is, the dual-card dual-standby scheme in the prior art is still adopted. If the conditions are satisfied, the process proceeds to step 104.

In step 104, the terminal a sends a call forwarding request to the network device.

Specifically, the terminal a sends a call forwarding request to the network device through the Modem2, where the call forwarding request includes identification information of the SIM card 1, and is used to instruct the network device to forward the voice call of the SIM card 2 to the SIM card 1. That is, the network device is requested to update the call target of the voice call whose original call target is the SIM card 2 to the SIM card 1.

In step 105, the network device transfers the voice call of SIM card 2 to SIM card 1.

Specifically, after receiving the call forwarding request sent by the Modem2, the network device identifies the identification information of the SIM card 1. The network device may transfer the voice call of the SIM card 2 onto the SIM card 1 based on the identification information. The manner in which the network device side transfers the voice call to another card may be: the network device queries, based on the identification of the SIM card 1, for example, the number of the SIM card 1, a communication link established by the network device for the SIM card 1, that is, a communication link between the network device and the Modem1, and then, the network device may send a voice call to the Modem1 through the communication link, and details of call forwarding may refer to the prior art, which is not described in detail herein.

In step 106, the terminal a receives the voice call with the call target of the SIM card 1 while connecting the voice call of the SIM card 1, and prompts the SIM card 1 to have another voice call.

Specifically, after the network device transfers the call target to the SIM card 1, a call request is sent to the terminal a, where the call target of the call request is the SIM card 1. The Modem1 receives a voice call of the SIM card 1 through the antenna (in order to distinguish a voice call in which the SIM card 1 is talking, a voice call after transfer is referred to as a temporary voice call), and the Modem1 may report to an AP in the terminal that another temporary voice call exists in the SIM card 1 while the voice call of the SIM card 1 is connected. As described above, the mobile phone may implement the display function through the GPU, the display screen 1, the AP, and the like, and in this application, the AP receives the voice call of the SIM card 1 reported by the Modem1, and may implement prompting on the terminal that another temporary voice call still exists on the SIM card 1 that the user is currently talking, so as to implement the effect of waiting (or holding) a call on the SIM card 1. Alternatively, the manner in which the AP may implement prompting another temporary voice call on the terminal may be vibration, sound, or display, which is not limited in this application.

It can be seen that in this case, the voice call of the SIM card 2 has been transferred to the SIM card 1, i.e. the Modem1 can receive and prompt the presence of another phone (the voice call of the original SIM card 2) through the SIM card 1 while making a call. Alternatively, the user may choose to put through a temporary voice call of the SIM card 1 (voice call of the original SIM card 2) while hanging up or maintaining the voice call of the SIM card 1. Optionally, the user may also choose to continue answering the voice call of SIM card 1 (voice call of terminal B to SIM card 1) while hanging up or maintaining the temporary voice call of SIM card 1. Obviously, compared with the dual-card dual-standby terminal in the prior art, the voice call of one SIM card is answered, and the voice call of the other SIM card is hung up. Compared with the existing double-card double-pass terminal, the double-card double-pass terminal has the advantage that cost is effectively saved under the condition that the same function can be achieved. In the application, the terminal A can answer the voice call of another card through the Modem1, so that the terminal can answer the voice call of the terminal C to the SIM card 2 by using the currently established call link (the link between the Modem1 and the network equipment), thereby saving the resources of operators and improving the resource utilization rate. .

On the basis of the embodiment shown in fig. 3, as shown in fig. 4, a flow chart of a call method is schematically shown, and in fig. 4:

step 201, the modem2 negotiates with the network device to determine that the call forwarding function is supported.

Optionally, modem2 actively initiates a negotiation to the network device, or the network device actively initiates a negotiation to Modem 2. And, modem2 determines that both Modem2 (also referred to as SIM card 2) and the network device support a call forwarding function (also referred to as temporary call forwarding function).

Alternatively, when the terminal detects whether it supports the call transfer function, it can determine whether it supports the function by detecting the configuration. The configuration process may be set by the user, for example: as shown in fig. 5a, after the user sets both the dual card in the available mode, that is, the user sets the SIM card 1 and the SIM card 2 to be available, the Modem1 of the SIM card 1 and the Modem2 of the SIM card 2 will register with the network device respectively and access the network. As shown in fig. 5b, the user may initiate the call transfer function of the SIM card 1 and/or the SIM card 2 by setting up. Accordingly, modem1 and/or Modem2 may determine whether to support the call forwarding function by detecting the terminal configuration during the registration phase. It should be noted that, the precondition that the user can select the SIM card 1 and/or the SIM card 2 to start the call transfer function is: the SIM card 1 and the SIM card 2 have subscribed to this function, which can be understood as: the SIM card 1 and/or the SIM card 2 have this function and the user can choose whether to turn on or not.

In this application, the call transfer function is described by taking an example that the Modem1 detects that the user sets the SIM1 to support the call transfer function, and the Modem2 detects that the user sets the SIM2 to support the call transfer function.

Optionally, modem1 may also perform a negotiation process with the network device, and details are the same as Modem2, which is not described herein. It should be noted that, the negotiation process of Modem1 and Modem2 may be performed in the same stage or may be performed in different stages. In one example, modem1 may negotiate with the network device during the registration phase to determine that call forwarding functionality is supported, and Modem2 may perform the negotiation process after the registration phase, i.e., after accessing the network. In another example, modem1 and Modem2 may negotiate with the network device at the same time during the registration process (the registration times of Modem1 and Modem2 may be the same or different). The present application is not limited in this regard.

Specific negotiation details may refer to step 101, which is not described here.

In step 202, terminal a connects to terminal B's voice call to SIM card 1.

Specifically, in the present application, after receiving a voice call from the terminal B to the SIM card 1, the Modem1 reports the voice call of the SIM card 1 to the AP in the terminal. After receiving the voice call reported by the Modem1, the AP enables the terminal A to prompt that the voice call of the terminal B to the SIM card 1 exists currently. Alternatively, the prompting mode may be an audio prompting mode, or a display prompting mode, for example: the terminal A displays the incoming call of the terminal B on a screen, and the call target is a prompting mode such as the SIM card 1, and the application is not limited. The AP may obtain an operation instruction generated by the user by touching a screen or the like, to instruct the terminal a to connect the voice call of the SIM card 1. The AP issues the operation instruction to the Modem1, and the Modem1 performs the voice call connection operation with the terminal B. The interaction process between the Modem1 and the AP during the connection process, and the interaction process between the Modem1 and the network device and the terminal B are not shown in the figure, and specific steps may refer to the prior art, which is not described in detail in this application.

In step 203, terminal C initiates a voice call to SIM card 2.

Specifically, step 203 may include:

in step 203a, the terminal C sends an Invite message To the network device, where a source address field (From field, or referred To as From field) of the Invite message includes a number of the SIM card in the terminal C, and a destination address field (To field, or referred To as To field) includes a number of the SIM card 2 in the terminal a, so as To indicate that the terminal C desires To initiate a voice call To the SIM card 2.

In step 203b, the network device sends Invite message of terminal C to Modem 2.

The specific call process of the terminal C to the SIM card 2 can refer to the prior art, and will not be described in detail in this application.

In step 204, modem2 receives a voice call from terminal C to SIM card 2.

Optionally, after the SIM card 1 (specifically, modem 1) establishes a call with the terminal B, the Modem2 receives a call request forwarded by the network device, where the call request includes a From field and a To field, and the From field includes a number of the SIM card of the terminal C, so as To indicate that an initiating end of the call request is the terminal C. The To field includes the number of SIM card 2 To indicate that the call target of the voice call is SIM card 2.

Step 205, modem2 detects whether the call forwarding condition is satisfied.

Optionally, as described above, call forwarding conditions include, but are not limited to:

1) The SIM card 1 is in a call.

2) Both Modem2 and network equipment support call forwarding functions.

3) The Modem2 can obtain the number of the SIM card 1.

Optionally, if any of the above conditions is not met, the existing dual-card dual-standby mode is still implemented on the terminal a, and specifically, the Modem2 sends a call request including the number of the SIM card of the terminal C and the number of the SIM card 2 to the AP in the terminal a. Terminal a prompts the presence of an incoming call to SIM card 2. For example: the AP may cause the display of terminal a to display a voice call from terminal C to SIM card 2, as shown in fig. 6. Referring to fig. 6, in this case, the user can only choose to answer the voice call of terminal C to SIM card 2, while terminal a hangs up the voice call of terminal B to SIM card 1; or selects to hang up the voice call of terminal C to SIM card 2 and continues to answer the voice call of terminal B to SIM card 1.

Alternatively, if the above conditions are all met, step 206 is entered.

In step 206, modem2 sends a Refer message to the network device.

Optionally, the Modem2 may send a transfer (Refer) message To the network device, where the Refer-To header field in the Refer message includes the number of the SIM card 1, so as To instruct the network device To transfer the current received voice call of the Modem2, i.e. the voice call of the terminal C To the SIM card 2, onto the SIM card 1. The Refer message may also be referred to as a call transfer request message.

In step 207, the network device sends an Invite message to Modem 1.

Optionally, the network device forwards the voice call from terminal C to SIM card 2 onto SIM card 1 based on the number of SIM card 1. Specifically, the network device may update the call destination of the voice call from the terminal B to the SIM card 2 (i.e., the SIM card 2) to the SIM card 1, thereby completing the transfer of the voice call.

Alternatively, the network device side may store a call configuration corresponding to the SIM card 2. Call configuration includes, but is not limited to: call restriction service of the SIM card 2, normal call transfer service of the SIM card 2, push-to-talk service of the SIM card 2, etc. The call restriction service of the SIM card 2 may mean that the temporary call transfer function cannot be applied when the user simultaneously opens the call transfer function (hereinafter referred to as temporary call transfer function, as distinguished from the normal service) and the incoming call restriction type service described in the present application. The common call forwarding service refers to that the terminal has been preset to forward all incoming calls or the incoming call when busy to a designated number. The Push To Talk service can also be a Push To Talk service, and has the advantages of quick call establishment and convenient team collaborative use. The calling party can directly initiate a call to one or a group of members by pressing one key, the call is timely put through, and the called Fang Moxu waits for ringing.

The temporary call forwarding service in this application also belongs to one of the call configurations. Alternatively, the call restriction service, the normal call transfer service, and the push-to-talk service described above have higher priority than the temporary call transfer service. That is, the network device detects whether the SIM card 2 corresponds to a call configuration other than the temporary call transfer function after receiving the Refer message for instructing the network device to perform the temporary call transfer. And detects the priority of each configuration. In one example, if the network device detects that the SIM card 2 is provided with a call restriction service, the network device preferentially processes the voice call of the SIM card 2 according to the requirement of the call restriction service.

Still referring to fig. 4, optionally, the network device re-issues a call request to the terminal a, that is, the network device sends an Invite message to the Modem1, where the From field in the Invite message includes the number of the SIM card of the terminal C, to indicate that the voice call is initiated by the terminal C, that is, to indicate that the incoming end is: and a terminal C. And, the To field in the Invite message includes the number of SIM card 1 To indicate that the call target of the voice call is SIM card 1. Optionally, the Invite message may further include original call target indication information, for indicating that the original call target of the call request is SIM card 2.

In step 208, modem1 reports the temporary voice call of SIM card 1 to the AP.

Alternatively, the voice call transferred to the SIM card 1 may also be referred to as a temporary voice call. In this application, during a voice call between the terminal a (specifically, the SIM card 1) and the terminal B, the Modem1 receives an Invite message from the network device, where the Invite message includes, but is not limited to: the number of the SIM card 1, the number of the SIM card of the terminal C and the original call target indication information. The Modem1 reports the call request to the AP in the terminal a to display on the display interface of the terminal a that another voice call waiting with the SIM card 1 is currently connected.

Optionally, the Modem1 may further report to the AP that the original call target of the call request is the SIM card 2, and accordingly, the display interface of the terminal a may display that the original call target of the temporary voice call of the SIM card 1 is the SIM card 2, as shown in fig. 7.

In one example, as shown in fig. 8, in the present application, the user may select to hold the call between the terminal B and the SIM card 1 by touching the display screen, and turn on the temporary voice call of the SIM card 1 (i.e., the incoming call of the terminal B). The touch sensor in the terminal may detect a touch operation of the user, and then the touch sensor may transfer the detected touch operation to the AP to determine that the touch event type is to connect a temporary voice call of the SIM card 1 and maintain a call between the terminal B and the SIM card 1. Note that "hold" means to put a call in the background.

Specifically, as shown in fig. 9, the specific steps of holding the incoming call of the terminal B and turning on the incoming call of the terminal C are shown in fig. 9:

in step 301, the AP triggers Modem1 to send Invite message to the network device. Specifically, after detecting an operation instruction of a user to the display screen, the terminal a (specifically, an AP in the terminal a) may trigger the Modem1 to send an Invite message to the network device based on the operation instruction, where the Invite message may include the number of the SIM card of the terminal B and call hold instruction information, and is used to instruct the network device to hold an ongoing voice call of the SIM card 1.

In step 302, the network device sends an Invite message including call hold indication information to the terminal B based on the number of the SIM card of the terminal B carried in the Invite message. After receiving the Invite message, terminal B will hear the call hold tone to alert terminal B that the call is held.

In step 303, terminal B returns a response message (i.e., a 200OK message) to the network device to indicate that terminal B has received an Invite message indicating that the voice call is on hold.

In step 304, the network device forwards the 200OK message to Modem1.

In step 305, after receiving the 200OK message, the terminal a sends an Acknowledgement (ACK) message, which may also be referred to as a response message, to the network device, so as to indicate that the terminal a has successfully received the 200OK message.

In step 306, the network device forwards the ACK message to terminal B.

In step 307, the Modem1 sends a 200OK message to the network device, where the 200OK message carries the number of the SIM card of the terminal C, so as to indicate that the Modem1 desires to connect the incoming call of the terminal C.

In step 308, the network device forwards the 200OK message to the terminal C based on the number of the SIM card of the terminal C carried in the 200OK message.

In step 309, terminal C returns an ACK message to indicate that terminal C has received the 200OK message.

In step 310, after receiving the ACK message returned by the terminal C, the network device sends an ACK message to the Modem1 to notify the Modem1 that a call can be established with the terminal C.

In step 311, terminal a may establish a call with terminal C through Modem 1.

In another example, the user may also select to hold the temporary voice call of terminal C to SIM card 1 (the original call target is SIM card 2) and continue to answer the voice call of terminal B to SIM card 1 by touching the display screen. To implement this scenario, the interaction procedure between Modem1, the network device, and the terminals B and C is similar to that shown in fig. 9, and is not repeated here.

In yet another example, terminal a may also perform a voice call to SIM card 1 to hang up terminal B and receive a temporary call to SIM card 1 (originally targeted for SIM card 2) from terminal C, according to the user's selection.

In yet another example, terminal a may also perform continuing to answer the voice call of terminal B to SIM card 1 and hanging up the temporary call of terminal C to SIM card 1 (original call target is SIM card 2) according to the user's selection.

In yet another example, terminal a may also perform a hang-up of a voice call from terminal B to SIM card 1 and a temporary call from terminal C to SIM card 1 (original call target is SIM card 2) according to the user's selection.

The above description has been presented mainly from the point of interaction between the network elements. It will be appreciated that, in order to achieve the above-mentioned functions, the terminal includes corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide the functional modules of the terminal according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

In an example, in the case of dividing respective functional modules with corresponding respective functions, fig. 10 shows a possible structural schematic diagram of the terminal 100 related to the above-described embodiment in the case of dividing respective functional modules with corresponding respective functions, and as shown in fig. 10, the terminal 100 may include: a processing module 101, a transceiver module 102 and a prompt module 103. The processing module 101 may be used for the step of "putting through a first voice call with a call target being a first SIM card", for example, the module may be used to support the terminal to perform steps 102 and 202 in the above method embodiments. The transceiver module 102 may be used for "receiving a second voice call with a call target of a second SIM card after the first voice call is completed and sending a call transfer request message to the network device", for example, the module may be used to support the terminal to perform steps 103, 104, 204, and 206 in the above method embodiments. The transceiver module 101 may also be used for the step of "receiving the transferred second voice call", for example, the module may be used to support the terminal to perform the steps 106, 207 in the above-described method embodiments. The prompting module 103 is configured to prompt that there is a second voice call after being transferred, and for example, the module may be configured to support the terminal to perform steps 106 and 208 in the above method embodiment.

All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

In addition, some embodiments are described herein, including:

the embodiment 1 of the present invention is a call method, which is characterized in that the call method is applied to a first terminal, the first terminal is provided with a first SIM card and a second SIM card, where when the first terminal connects a voice call with a call target of the first SIM card, the voice call with the call target of the second SIM card can also be received; the method comprises the following steps:

when the first terminal is connected with a first voice call with a call target of the first SIM card, receiving and prompting that another voice call with the call target of the first SIM card is a second voice call;

the second voice call is sent to the first terminal after the voice call of the second terminal to the second SIM card is transferred to the first SIM card by the network equipment based on a call transfer request from the first terminal, wherein the call transfer request comprises identification information of the first SIM card;

and the call transfer request is sent to the network equipment after the first voice call is conducted by the first terminal and the voice call of the second terminal to the second SIM card is received.

Embodiment 2, the method according to embodiment 1, characterized in that the method further comprises:

the first terminal negotiates with the network equipment to determine that the first terminal and the network equipment both support a call transfer function.

Embodiment 3, the method of embodiment 2, wherein negotiating with the network device, comprises:

the first terminal sends capability information to the network equipment, and the capability information is used for indicating the first terminal to support the call transfer function;

and if the first terminal receives response information which is sent by the network equipment and used for indicating the network equipment to support the call transfer function, the negotiation is determined to be successful.

An embodiment 4 of the method according to embodiment 3, wherein the capability information is sent to the network device by the first terminal after accessing the network to which the network device belongs and before receiving the first voice call;

or alternatively, the process may be performed,

the capability information is sent to the network equipment when the first terminal registers with the network.

Embodiment 5, the method of embodiment 2, wherein negotiating with the network device, comprises:

If the capability determining information sent by the network equipment is received, detecting whether the first terminal supports the call transfer function, wherein the capability determining information is used for indicating the network equipment to support the call transfer operation function;

and if the first terminal is detected to support the call transfer function, determining that the negotiation is successful.

Embodiment 6, the method of embodiment 5, wherein the capability determination information is received by the network device before a first terminal accesses the network device and receives the first voice call;

or alternatively, the process may be performed,

the capability determination information is received by the first terminal when registering with the network.

Embodiment 7 of the method according to any one of embodiments 1 to 6, wherein the identification information is number information of the first SIM card.

Embodiment 8, the method according to any one of embodiments 1 to 7, further comprising:

the first terminal connects the second voice call and keeps the first voice call;

or alternatively, the process may be performed,

the first terminal continues to connect the first voice call and holds the second voice call.

Embodiment 9, the method according to any one of embodiments 1 to 8, further comprising:

and the first terminal prompts that the original call target of the second voice call is the second SIM card.

An embodiment 10 of a call method is characterized by being applied to a terminal, where the terminal includes a first processor, a second processor, and a third processor, the first processor is associated with a first SIM card, and the second processor is associated with a second SIM card;

the first processor is used for switching on a first voice call with a call target of the first SIM card;

the second processor is configured to receive a second voice call with a call target being the second SIM card after the first processor connects the first voice call, and send a call transfer request message to a network device, where the call transfer request message includes identification information of the first SIM card, and is configured to instruct the network device to transfer the call target of the second voice call to the first SIM card based on the identification information;

the first processor is further configured to receive the transferred second voice call, and send the transferred second voice call to the third processor while the first voice call is being connected;

The third processor is configured to prompt the presence of the transferred second voice call.

Embodiment 11, the method according to embodiment 10, characterized in that,

the second processor is further configured to negotiate with the network device to determine that the second processor and the network device both support a call forwarding function.

Embodiment 12, the method of embodiment 11, wherein when the second processor negotiates with the network device, the second processor is further configured to:

the second processor sending capability information to the network device for instructing the second processor to support the call forwarding function;

and if the second processor receives response information sent by the network equipment and used for indicating the network equipment to support the call transfer function, determining that the negotiation is successful.

Embodiment 13, the method according to embodiment 12, wherein the capability information is sent to the network device by the first terminal after accessing the network to which the network device belongs and before receiving the first voice call;

or alternatively, the process may be performed,

Embodiment 14, the method of embodiment 11, wherein when the second processor negotiates with the network device, the second processor is further configured to:

if the second processor receives the capability determination information sent by the network device, detecting whether the second processor supports the call forwarding function, wherein the capability determination information is used for indicating the network device to support the call forwarding operation function;

and if the second processor detects that the first terminal supports the call transfer function, determining that negotiation is successful.

Embodiment 15, the method of embodiment 14, wherein the capability determination information is received by the network device before a first terminal accesses the network device and receives the first voice call;

or alternatively, the process may be performed,

The method according to any one of embodiments 16 and 10 to 15, wherein the identification information is number information of the first SIM card.

Embodiment 17, the method according to any one of embodiments 10 to 16, characterized in that,

The third processor is further configured to prompt that an original call target of the second voice call is the second SIM card.

Embodiment 18, the method of any one of embodiments 10 to 17, wherein the first processor and the second processor are Modem;

the third processor is an application processor AP.

An embodiment 19 of a call device is characterized by being applied to a first terminal, where the first terminal is provided with a first SIM card and a second SIM card, and when the first terminal connects a voice call with a call target being the first SIM card, the first terminal may also receive a voice call with a call target being the second SIM card; the device comprises:

the receiving unit is used for receiving and prompting a second voice call with another call target as the first SIM card when the first terminal is connected with the first voice call with the call target as the first SIM card;

The apparatus according to embodiment 20, characterized in that the apparatus further comprises:

and the negotiation unit is used for negotiating with the network equipment and determining that the first terminal and the network equipment both support a call transfer function.

An embodiment 21 of the apparatus as set forth in embodiment 20, wherein the negotiation unit is further configured to:

transmitting capability information to the network device, wherein the capability information is used for indicating the first terminal to support the call forwarding function;

and if receiving response information sent by the network equipment and used for indicating the network equipment to support the call transfer function, determining that the negotiation is successful.

An embodiment 22 of the apparatus according to embodiment 21, wherein the capability information is sent by the negotiation unit to the network device after accessing the network to which the network device belongs and before receiving the first voice call;

or alternatively, the process may be performed,

the capability information is sent to the network device when the negotiation unit registers with the network.

An embodiment 23, the apparatus according to embodiment 20, wherein the negotiation unit is further configured to:

Embodiment 24, the apparatus of embodiment 23, wherein the capability determination information is received by the network device before a first terminal accesses the network device and receives the first voice call;

or alternatively, the process may be performed,

the capability determination information is received by the negotiation unit upon registration with the network.

An embodiment 25, an apparatus according to any one of embodiments 19 to 24, wherein the identification information is number information of the first SIM card.

The device of embodiment 26, any one of embodiments 19-25, further comprising:

a processing unit for switching on the second voice call and holding the first voice call;

Or alternatively, the process may be performed,

and the processing unit is also used for continuing to connect the first voice call and keeping the second voice call.

The apparatus of embodiment 27, any one of embodiments 19 to 26, wherein the receiving module is further configured to:

and prompting the original call target of the second voice call to be the second SIM card.

Embodiment 28, a terminal, wherein the first terminal is provided with a first SIM card and a second SIM card, where when the first terminal connects a voice call with a call target of the first SIM card, the first terminal may also receive a voice call with a call target of the second SIM card; the terminal comprises:

a memory coupled with the one or more processors;

the memory stores instructions that, when executed by the one or more processors, cause the terminal to perform the steps of:

receiving and prompting a second voice call with another call target as the first SIM card when the first voice call with the call target as the first SIM card is connected;

The embodiment 29, the terminal of embodiment 28, wherein the instructions, when executed by the one or more processors, cause the terminal to perform the steps of:

negotiating with the network equipment to determine that the first terminal and the network equipment both support a call transfer function.

An embodiment 30 is a terminal according to embodiment 29, wherein the instructions, when executed by the one or more processors, cause the terminal to perform the following steps when negotiating with the network device:

An embodiment 31 of the terminal according to embodiment 30, wherein the capability information is sent to the network device by the first terminal after accessing the network to which the network device belongs and before receiving the first voice call;

Or alternatively, the process may be performed,

An embodiment 32 is a terminal according to embodiment 29, wherein the instructions, when executed by the one or more processors, cause the terminal to negotiate with the network device to perform the steps of:

Embodiment 33, the terminal of embodiment 32, wherein the capability determination information is received by the network device before a first terminal accesses the network device and receives the first voice call;

or alternatively, the process may be performed,

The terminal according to embodiment 34, wherein the identification information is number information of the first SIM card.

The terminal of embodiment 35, any of embodiments 28 to 34, wherein the instructions, when executed by the one or more processors, cause the terminal to perform the steps of:

-placing the second voice call on hold and holding the first voice call;

or alternatively, the process may be performed,

continuing to connect the first voice call and maintaining the second voice call.

The terminal of embodiment 36, any of embodiments 28 to 35, wherein the instructions, when executed by the one or more processors, cause the terminal to perform the steps of:

Embodiment 37, a computer program which, when executed by a terminal, causes the terminal to perform the method of any of embodiments 1 to 9.

Embodiment 38, a computer readable storage medium storing a computer program comprising at least one piece of code executable by a terminal to control the terminal to perform the method of any one of embodiments 1 to 9.

Embodiment 39, a chip includes a processing circuit, a transceiver pin. The processing circuit is configured to perform the method of any one of embodiments 1 to 9.

The steps of a method or algorithm described in connection with the disclosure of the embodiments disclosed herein may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (Random Access Memory, RAM), flash Memory, read Only Memory (ROM), erasable programmable Read Only Memory (Erasable Programmable ROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device. The processor and the storage medium may reside as discrete components in a network device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. The communication method is characterized in that the communication method is applied to a first terminal, the first terminal at least supports a first SIM card and a second SIM card, and when the first SIM card and the second SIM card are set, the first terminal can also receive a voice call with a call target being the first SIM card when the first terminal is connected with the voice call with the call target being the second SIM card; the method comprises the following steps:

the call transfer request is sent to the network equipment after the first voice call is conducted by the first terminal and the voice call of the second terminal to the second SIM card is received;

after the first terminal sends a call transfer request to the network device, the method further comprises:

the first terminal receives a call message of the network device, wherein the call message at least comprises: the original call target indication information is used for indicating that the original call target of the call request is a second SIM card;

the first terminal displays that the original call target of the second voice call to the first SIM card is the second SIM card on a display interface of the first terminal according to the call message;

Wherein after the network device receives the call transfer request message, detecting, by the network device, whether the second SIM card corresponds to a call configuration other than temporary call transfer and detecting a priority of each call configuration; and the network equipment processes the voice call of the second SIM card according to the priority of each call configuration.

2. The method according to claim 1, wherein the method further comprises:

3. The method of claim 2, wherein negotiating with the network device comprises:

4. A method according to claim 3, wherein the capability information is sent to the network device by the first terminal after accessing the network to which the network device belongs and before receiving the first voice call;

Or alternatively, the process may be performed,

5. The method of claim 2, wherein negotiating with the network device comprises:

if the capability determination information sent by the network equipment is received, detecting whether the first terminal supports the call transfer function, wherein the capability determination information is used for indicating the network equipment to support the call transfer function;

6. The method of claim 5, wherein the capability determination information is received by the network device prior to a first terminal accessing the network device and receiving the first voice call;

or alternatively, the process may be performed,

7. The method according to any one of claims 1 to 6, wherein the identification information is number information of the first SIM card.

8. The method according to any one of claims 1 to 6, further comprising:

or alternatively, the process may be performed,

9. The terminal is characterized in that a first terminal at least supports setting a first SIM card and a second SIM card, wherein when the first SIM card and the second SIM card are set, the first terminal can also receive a voice call with a call target as the second SIM card when the first terminal is used for connecting the voice call with the call target as the first SIM card; the terminal comprises:

a memory and a processor, the memory coupled with the processor;

the memory stores instructions that, when executed by one or more of the processors, cause the terminal to perform the steps of:

after the first terminal sends a call transfer request to a network device, the instructions, when executed by the processor, cause the terminal to perform the steps of:

wherein after the network device receives the call transfer request message, detecting, by the network device, whether the second SIM card corresponds to a call configuration other than a temporary call transfer function and detecting a priority of each call configuration; and the network equipment processes the voice call of the second SIM card according to the priority of each call configuration.

10. The terminal of claim 9, wherein the instructions, when executed by the processor, cause the terminal to perform the steps of:

11. The terminal of claim 10, wherein the instructions, when executed by the processor, cause the terminal to negotiate with the network device to:

12. The terminal according to claim 11, wherein the capability information is sent to the network device by the first terminal after accessing the network to which the network device belongs and before receiving the first voice call;

or alternatively, the process may be performed,

13. The terminal of claim 10, wherein the instructions, when executed by the processor, cause the terminal to negotiate with the network device to:

14. The terminal of claim 13, wherein the capability determination information is received by the network device prior to a first terminal accessing the network device and receiving the first voice call;

or alternatively, the process may be performed,

15. A terminal according to any of claims 9 to 14, wherein the identification information is the number information of the first SIM card.

16. The terminal according to any of the claims 9 to 14, wherein the instructions, when executed by the processor, cause the terminal to perform the steps of:

-placing the second voice call on hold and holding the first voice call;

or alternatively, the process may be performed,

17. A computer readable storage medium storing a computer program comprising at least one piece of code executable by a terminal to control the terminal to perform the method of any one of claims 1 to 8.

18. A chip comprising processing circuitry, transceiver pins; the processing circuit is adapted to perform the method of any of claims 1 to 8.