WO2023231642A1

WO2023231642A1 - Dual-card communication method and terminal device

Info

Publication number: WO2023231642A1
Application number: PCT/CN2023/090157
Authority: WO
Inventors: 何彦召
Original assignee: 荣耀终端有限公司
Priority date: 2022-05-30
Filing date: 2023-04-23
Publication date: 2023-12-07
Also published as: CN117202159A

Abstract

Embodiments of the present application provide a dual-card communication method and a terminal device, the method comprising: the terminal device reserves a frequency band where a second card currently resides, determines a first candidate frequency band of the first card on the basis of a preset condition, obtains the first candidate frequency band that both meets the quality requirement and forms a DSDA mode with the frequency band where the second card currently resides, then selects one frequency band from the first candidate frequency band as a target frequency band, and thus enables the first card to reside on the target frequency band and forms a DSDA mode between the first card and the second card. Therefore, the terminal device can be in the DSDA mode, and the user experience is improved.

Description

A dual-card communication method and terminal equipment

This application claims priority to the Chinese patent application submitted to the State Intellectual Property Office on May 30, 2022, with application number 202210601045.9 and the application title "A method and terminal equipment for dual-card communication", the entire content of which is incorporated by reference. in this application.

Technical field

The present application relates to the field of communications, and more specifically, to a method and terminal device for dual-card communication in the field of communications.

Background technique

With the development of communications, most current terminal devices (for example, mobile phones) support dual sim dual standby (DSDS) or dual sim dual active (dual sin dual active, DSDA) mode. In DSDA mode, the terminal device supports dual-card service concurrency, that is, dual cards can send or receive at the same time. When one card performs call services, the other card can receive incoming calls and perform data services (i.e., surf the Internet). In DSDS mode, the terminal device does not support concurrent dual-card services. When one card performs call services, the other card cannot perform data services. Also, when one card performs data services, although the other card can receive incoming calls, the incoming calls will not be made. For the primary card, the call service of the secondary card makes it impossible for the primary card to perform data services. Moreover, the secondary card is unable to perform data services due to network search, measurement, tracking area update (TAU), SMS, MMS, periodic Registration and other behaviors will seize the antenna and affect the Internet experience of the main card.

It can be seen that compared to DSDS mode, DSDA mode has a higher user experience. However, the current mainstream chips in terminal equipment on the market do not have perfect support for DSDA mode. In many scenarios, terminal equipment is in DSDS mode instead of DSDA mode, thus reducing the user experience.

Contents of the invention

Embodiments of the present application provide a dual-SIM communication method and terminal equipment, which can make the terminal equipment in DSDA mode as much as possible to improve user experience.

The first aspect provides a dual-card communication method, which is applied to terminal equipment, including:

When the dual-card dual-pass DSDA mode is not formed between the first card and the second card of the terminal device, determine the first candidate frequency band of the first card that meets the preset conditions, and the first candidate frequency band includes At least one frequency band, the preset condition includes a first condition and a second condition. The first condition includes: the quality of the candidate cell meets the requirements. The second condition includes: the frequency band of the candidate cell can be compatible with the second card. The frequency band currently camped on forms the DSDA mode supported by the terminal equipment, and one candidate cell corresponds to one frequency band;

According to the target frequency band in the first candidate frequency band, the first card is camped on the target frequency band.

The dual-card communication method provided by the embodiment of the present application retains the frequency band currently occupied by the second card, and determines the first candidate frequency band of the first card based on preset conditions. The obtained first candidate frequency band can not only meet the quality requirements but also be compatible with The frequency band currently occupied by the second card forms the DSDA mode, and then selects a frequency band from the first candidate frequency band as the target frequency band. Prompting the first card to reside on the target frequency band can cause a DSDA mode to be formed between the first card and the second card, thereby enabling the terminal device to be in the DSDA mode and improving user experience. In addition, since the embodiment of the present application retains the frequency band where the second card currently resides and only interferes with the frequency band where the first card needs to reside, compared with the method of adjusting the frequency bands of both cards, the embodiment of the present application is easier Realize, and reduce to a certain extent the impact on users of service interruptions that may be caused by adjusting the frequency band.

Optionally, the first candidate frequency band includes a plurality of frequency bands; and, before the first card is camped on the target frequency band according to the target frequency band in the first candidate frequency band, the Methods also include:

The frequency band with the highest priority among the first candidate frequency bands is determined as the target frequency band.

In the dual-card communication method provided by the embodiment of the present application, if the first candidate frequency band determined based on preset conditions includes multiple frequency bands, the terminal device uses the frequency band with the highest priority among the first candidate frequency bands as the target frequency band, and retains the current frequency band of the second card. Parking the first card in the target frequency band can make the DSDA mode formed between the first card and the second card the optimal mode set by the terminal device, improving the performance of the dual-card mode.

Optionally, the frequency band with the highest priority is the frequency band with the best dual-card mode capability in the DSDA mode formed by the first candidate frequency band and the frequency band where the second card currently resides.

In the dual-card communication method provided by the embodiment of the present application, the terminal device uses the frequency band with the best dual-card mode capability in the DSDA mode formed by the first candidate frequency band and the frequency band where the second card currently resides as the frequency band with the highest priority. , retaining the frequency band where the second card currently resides, and parking the first card on the frequency band with the highest priority, can make the DSDA mode formed between the first card and the second card a dual-card mode with the best performance. User experience is the best.

Optionally, the frequency band with the highest priority is the frequency band with the strongest signal among the first candidate frequency bands.

Optionally, in a scenario where the terminal device performs cell selection at power-on, the first condition includes: the quality of the candidate cell satisfies the S criterion.

The dual-card communication method provided by the embodiment of the present application, in the scenario where the terminal device is powered on to select a cell, on the basis that the quality of the existing candidate cells meets the first condition of the S criterion, an additional feature is added to enable dual-card formation. The second condition of DSDA mode is to optimize and improve the existing process with fewer changes. It is easier to implement when the terminal equipment can be placed in DSDA mode.

Optionally, in the scenario where the terminal device performs cell reselection, the first condition includes: the quality of the candidate cell satisfies the S criterion and the R criterion.

The dual-card communication method provided by the embodiment of the present application, in the scenario where the terminal device performs cell reselection, on the basis that the quality of the existing candidate cells meets the first condition of the S criterion and the R criterion, is added for making the The second condition for dual cards to form DSDA mode is to optimize and improve the existing process with fewer changes. It is easier to implement when the terminal device can be in DSDA mode.

Optionally, in the scenario where the terminal device performs cell switching, the first condition includes: the quality of the candidate cell meets the events used for cell switching, and the events used for cell switching include A3 events, A4 events, Either B1 event or B2 event.

The dual-SIM communication method provided by the embodiment of the present application adds an additional function for making the cell switch happen on the basis that the quality of the existing candidate cells meets the first condition for the cell switch event in the scenario where the terminal device performs cell handover. The second condition for dual cards to form DSDA mode is to optimize and improve the existing process with fewer changes. It is easier to implement when the terminal device can be in DSDA mode.

Optionally, based on the target frequency band in the first candidate frequency band, the first card is stationed in the target frequency band. Before going on the frequency band, the method also includes:

Send a measurement report indicating the target frequency band to the network device;

Receive a switching instruction from the network device, where the switching instruction is used to instruct the terminal device to switch the frequency band where the first card resides to the target frequency band.

Optionally, the step of parking the first card on the target frequency band according to the target frequency band in the first candidate frequency band includes:

According to the target frequency band, the frequency band of the first card is adjusted so that the first card resides on the target frequency band.

Optionally, the first card is a secondary card, and the second card is a primary card.

In the dual-card communication method provided by the embodiment of the present application, since the main card has a higher usage rate and generally conducts more phone services and Internet services, retaining the frequency band of the main card and adjusting the secondary card can reduce the need to adjust the frequency band. The impact on the main card's business is to ensure that the main card's business is as smooth as possible and users can enjoy the best experience.

In the second aspect, a dual-card communication method is provided and applied to terminal equipment, including:

When the dual-card dual-pass DSDA mode is not formed between the first card and the second card of the terminal device, determine the candidate frequency band of the first card that satisfies the first preset condition and the candidate frequency band that satisfies the second preset condition. The candidate frequency band of the second card includes at least one frequency band, the candidate frequency band of the second card includes at least one frequency band, and the first preset condition includes: for the first card The candidate cells of the second card satisfy the S criterion and the R criterion, and the second preset conditions include: the candidate cells of the second card satisfy the S criterion and the R criterion, and one candidate cell corresponds to one frequency band;

Determine at least one DSDA combination supported by the terminal device that can form a DSDA mode from the candidate frequency band of the first card and the candidate frequency band of the second card, each DSDA combination including the candidate frequency band of the first card One of the frequency bands and one of the candidate frequency bands of the second card;

According to the target DSDA combination in the at least one DSDA combination, the frequency bands of the first card and the second card are adjusted so that the first card and the second card respectively reside in the target On the frequency band corresponding to the dual cards in the DSDA combination.

The dual-card communication method provided by the embodiment of the present application determines the candidate frequency band of the first card based on the first preset condition and determines the candidate frequency band of the second card based on the second preset condition. The obtained candidate frequency bands of the two cards can both satisfy The S criterion and R criterion of the cell reselection process, and then freely combine the candidate frequency bands of the two cards to obtain at least one DSDA combination supported by the terminal equipment and select one DSDA combination from at least one DSDA combination as the target DSDA, for the first Adjusting the frequency bands of the card and the second card can form a DSDA mode between the first card and the second card, thereby making the terminal device in the DSDA mode and improving the user experience.

Optionally, the at least one DSDA combination includes a plurality of DSDA combinations; and, adjusting the frequency bands of the first card and the second card according to the target DSDA combination in the at least one DSDA combination. Previously, the method also included:

The DSDA combination with the highest priority among the plurality of DSDA combinations is determined as the target DSDA combination.

In the dual-card communication method provided by the embodiment of this application, if the terminal device supports multiple DSDA combinations, the DSDA combination with the highest priority can be used as the target DSDA combination to adjust the frequency bands of the first card and the second card. The DSDA mode formed between the first card and the second card is the optimal mode set by the terminal device, which improves the performance of the dual-card mode.

Optionally, the DSDA combination with the highest priority is the combination with the best dual-SIM mode capability among the multiple DSDA combinations.

The dual-card communication method provided by the embodiment of the present application uses the combination with the best dual-card mode capability among multiple DSDA combinations as the DSDA combination with the highest priority, and the terminal device compares the first card to the first card based on the DSDA combination with the highest priority. Adjusting the frequency band of the second card can make the DSDA mode formed between the first card and the second card a dual-card mode with the best performance and the best user experience.

A third aspect provides a terminal device, which is configured to execute the method provided in the first or second aspect. Specifically, the terminal device may include a module for executing any possible implementation of the first aspect or the second aspect.

A fourth aspect provides a terminal device including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the method in any of the possible implementations of the first aspect or the second aspect. Optionally, the terminal device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

In a fifth aspect, a computer-readable storage medium is provided, with a computer program stored thereon. When the computer program is executed by a device, it causes the device to implement any one of the possible implementations of the first aspect or the second aspect. Methods.

A sixth aspect provides a computer program product containing instructions that, when executed by a computer, cause a device to implement the method in any of the possible implementations of the first aspect or the second aspect.

In a seventh aspect, a chip is provided, including: an input interface, an output interface, a processor, and a memory. The input interface, the output interface, the processor, and the memory are connected through an internal connection path. The processor uses For executing the code in the memory, when the code is executed, the processor is configured to execute the method in any possible implementation manner of the first aspect or the second aspect.

Description of the drawings

Figure 1 is a schematic structural diagram of a mobile communication system provided by an embodiment of the present application.

Figure 2 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

Figure 3 is a schematic flow chart of a dual-card communication method provided by an embodiment of the present application.

FIG. 4 is another schematic flow chart of the dual-card communication method provided by the embodiment of the present application.

FIG. 5 is another schematic flow chart of the dual-card communication method provided by the embodiment of the present application.

FIG. 6 is another schematic flow chart of the dual-card communication method provided by the embodiment of the present application.

FIG. 7 is another schematic flow chart of the dual-card communication method provided by the embodiment of the present application.

FIG. 8 is another schematic flow chart of the dual-card communication method provided by the embodiment of the present application.

Figure 9 is an exemplary block diagram of a terminal device provided by an embodiment of the present application.

Figure 10 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

Detailed ways

The technical solutions in this application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of this application are applicable to terminal devices that can communicate with network devices and support dual-card communication. Each card can support telephone services and data services (i.e., Internet access services). For example, the terminal device can be a mobile phone, a smart watch, a smart bracelet, or a tablet computer. The embodiments of this application do not place any restrictions on the specific types of terminal devices. .

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, general packet radio service (GPRS) system, code division multiple access Into (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, time division code division multiple access (time-division code division multiple access, TD-SCDMA), long-term evolution (long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), fifth generation new radio (5G NR) or future The sixth generation (6th generation, 6G) system, etc., among which, 5G NR is referred to as NR.

The embodiments of the present application are applicable to a mobile communication system including multiple base stations and at least one terminal device, where the multiple base stations include at least a base station capable of supporting a 5G network and a base station capable of supporting a 4G network. For example, as shown in Figure 1, the mobile communication system includes a base station 110, a base station 120 and a terminal device 130. One of the base station 110 and the base station 120 can support a 4G network, and the other can support a 5G network. The terminal device 130 can communicate with the base station. 110 is connected to at least one of the base stations 120. For ease of description, the base station that supports the 4G network will be referred to as the 4G base station, and the base station that supports the 5G network will be referred to as the 5G base station.

If the terminal device 130 is connected to one of the base station 110 and the base station 120, both cards reside on the same network (4G network or 5G network). If the terminal device 130 is connected to the base station 110 and the base station 120, then the following three situations may occur. Case 1: The terminal device supports dual connection of the 4G network and the 5G network, and each of the two cards is in a dual connection state, that is, each card is connected to the 4G network and the 5G network at the same time. Scenario 2. One card resides in the 4G network and the other card resides in the 5G network. Case 3: The terminal device supports dual connections of the LTE network and the 5G network. One card resides on the 4G network or 5G network, and the other card is connected to both the 4G network and the 5G network at the same time.

It should be noted that since dual SIM cards do not necessarily support the same operator, when dual SIM cards reside on the 4G network or 5G network at the same time, the 4G base station or 5G base station where the dual SIM cards reside may not be the same. Therefore, The mobile communication system may include multiple base stations 110 and/or multiple base stations 120 . When a certain base station (for example, base station 110 or base station 120) is a base station of a shared network, even if the dual cards do not support the same operator, the system still allows the dual cards to reside in the network supported by the base station, where the shared network is Networks shared by different operators.

Assume that the dual cards support different operators, card 1 supports operator 1, and card 2 supports operator 2. The mobile communication system includes one base station 110 and two base stations 120.

In an example, if the base station 110 is a 4G base station that shares a 4G network and the base station 120 is a 5G base station that does not share a 5G network, one base station 120 supports operator 1 and the other base station 120 supports operator 2. If the dual cards reside on the 4G network at the same time, the dual cards reside on the same base station 110 (i.e., 4G base station); if the dual cards reside on the 5G network at the same time, the dual cards reside on different base stations 120 (i.e., , 5G base station), card 1 resides on the base station 120 corresponding to operator 1, and card 2 resides on the base station 120 corresponding to operator 2.

In another example, if the base station 110 is a 5G base station that shares a 5G network and the base station 120 is a 4G base station that does not share a 4G network, one base station 120 supports operator 1 and the other base station 120 supports operator 2. If the dual cards reside on the 5G network at the same time, the dual cards reside on the same base station 110 (i.e., 5G base station); if the dual cards reside on the 4G network at the same time, the dual cards reside on different base stations 120 (i.e., , 4G base station), card 1 resides on the operating The card 2 resides on the base station 120 corresponding to the operator 1, and the card 2 resides on the base station 120 corresponding to the operator 2.

Assume further that the dual cards support different operators, card 1 supports operator 1, and card 2 supports operator 2. The mobile communication system includes two base stations 110 and two base stations 120. The base station 110 is a 4G base station of a non-shared 4G network. , one base station 110 supports operator 1, and the other base station 110 supports operator 2. The base station 120 is a 5G base station of a non-shared 5G network. One base station 120 supports operator 1, and the other base station 120 supports operator 2. If dual SIM cards are camped on the 4G network at the same time, then the dual SIM cards are camped on different base stations 110 (i.e., 4G base stations). Card 1 is camped on the base station 110 corresponding to operator 1, and card 2 is camped on operator 2. on the corresponding base station 110; if the dual cards reside on the 5G network at the same time, the dual cards reside on different base stations 120 (i.e., 5G base stations). Card 1 resides on the base station 120 corresponding to operator 1, and card 2 It resides on the base station 120 corresponding to operator 2.

It should be understood that the mobile communication system shown in Figure 1 is only a schematic illustration and should not limit the embodiments of the present application. For example, the mobile communication system may also include core network equipment, as well as more base stations and terminal equipment.

Figure 2 shows a schematic structural diagram of the terminal device 200. The terminal device 200 may include a processor 210, an external memory interface 220, an internal memory 221, a universal serial bus (USB) interface 230, a charging management module 240, a power management module 241, a battery 242, an antenna 1, an antenna 2 , mobile communication module 250, wireless communication module 260, audio module 270, speaker 270A, receiver 270B, microphone 270C, headphone interface 270D, sensor module 280, button 290, motor 291, indicator 292, camera 293, display screen 294, and Subscriber identification module (SIM) card interface 295, etc. The sensor module 280 may include a pressure sensor 280A, a gyro sensor 280B, an air pressure sensor 280C, a magnetic sensor 280D, an acceleration sensor 280E, a distance sensor 280F, a proximity light sensor 280G, a fingerprint sensor 280H, a temperature sensor 280J, a touch sensor 280K, and ambient light. Sensor 280L, bone conduction sensor 280M, etc.

It can be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the terminal device 200. In other embodiments of the present application, the terminal device 200 may include more or less components than shown in the figures, or combine some components, or split some components, or arrange different components. The components illustrated may be implemented in hardware, software, or a combination of software and hardware.

The processor 210 may include one or more processing units. For example, the processor 210 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), and an image signal processor. (image signal processor, ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU) wait. Among them, different processing units can be independent devices or integrated in one or more processors.

The controller may be the nerve center and command center of the terminal device 200 . The controller can generate operation control signals based on the instruction operation code and timing signals to complete the control of fetching and executing instructions.

The processor 210 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in processor 210 is cache memory. This memory may hold instructions or data that have been recently used or recycled by processor 210 . If the processor 210 needs to use the instructions or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 210 is reduced, thus improving the efficiency of the system.

In some embodiments, processor 210 may include one or more interfaces. Interfaces may include integrated circuit (inter-integrated circuit, I2C) interface, integrated circuit built-in audio (inter-integrated circuit sound, I2S) Interface, pulse code modulation (PCM) interface, universal asynchronous receiver/transmitter (UART) interface, mobile industry processor interface (MIPI), universal input and output (general- purpose input/output (GPIO) interface, subscriber identity module (SIM) interface, and/or universal serial bus (USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (derail clock line, SCL). In some embodiments, processor 210 may include multiple sets of I2C buses. The processor 210 can couple the touch sensor 280K, the charger, the flash, the camera 293, etc. respectively through different I2C bus interfaces. For example, the processor 210 can be coupled to the touch sensor 280K through an I2C interface, so that the processor 210 and the touch sensor 280K communicate through the I2C bus interface to implement the touch function of the terminal device 200 .

The I2S interface can be used for audio communication. In some embodiments, processor 210 may include multiple sets of I2S buses. The processor 210 can be coupled with the audio module 270 through the I2S bus to implement communication between the processor 210 and the audio module 270. In some embodiments, the audio module 270 can transmit audio signals to the wireless communication module 260 through the I2S interface to implement the function of answering calls through a Bluetooth headset.

The PCM interface can also be used for audio communications to sample, quantize and encode analog signals. In some embodiments, the audio module 270 and the wireless communication module 260 may be coupled through a PCM bus interface. In some embodiments, the audio module 270 can also transmit audio signals to the wireless communication module 260 through the PCM interface to implement the function of answering calls through a Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 210 and the wireless communication module 260 . For example: the processor 210 communicates with the Bluetooth module in the wireless communication module 260 through the UART interface to implement the Bluetooth function. In some embodiments, the audio module 270 can transmit audio signals to the wireless communication module 260 through the UART interface to implement the function of playing music through the Bluetooth headset.

The MIPI interface can be used to connect the processor 210 with peripheral devices such as the display screen 294 and the camera 293 . MIPI interfaces include camera serial interface (CSI), display serial interface (DSI), etc. In some embodiments, the processor 210 and the camera 293 communicate through the CSI interface to implement the shooting function of the terminal device 200. The processor 210 and the display screen 294 communicate through the DSI interface to implement the display function of the terminal device 200.

The GPIO interface can be configured through software. The GPIO interface can be configured as a control signal or as a data signal. In some embodiments, the GPIO interface can be used to connect the processor 210 with the camera 293, display screen 294, wireless communication module 260, audio module 270, sensor module 280, etc. The GPIO interface can also be configured as an I2C interface, I2S interface, UART interface, MIPI interface, etc.

The USB interface 230 is an interface that complies with the USB standard specification, and may be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 230 can be used to connect a charger to charge the terminal device 200, and can also be used to transmit data between the terminal device 200 and peripheral devices. It can also be used to connect headphones to play audio through them. This interface can also be used to connect other terminal devices, such as AR devices.

It can be understood that the interface connection relationships between the modules illustrated in the embodiments of this application are only schematic illustrations. It does not constitute a structural limitation on the terminal device 200. In other embodiments of the present application, the terminal device 200 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

The charge management module 240 is used to receive charging input from the charger. Among them, the charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 240 may receive charging input from the wired charger through the USB interface 230 . In some wireless charging embodiments, the charging management module 240 may receive wireless charging input through the wireless charging coil of the terminal device 200 . While charging the battery 242, the charging management module 240 can also provide power to the terminal device through the power management module 241.

The power management module 241 is used to connect the battery 242, the charging management module 240 and the processor 210. The power management module 241 receives input from the battery 242 and/or the charging management module 240 and supplies power to the processor 210, internal memory 221, external memory, display screen 294, camera 293, wireless communication module 260, etc. The power management module 241 can also be used to monitor battery capacity, battery cycle times, battery health status (leakage, impedance) and other parameters. In some other embodiments, the power management module 241 may also be provided in the processor 210 . In other embodiments, the power management module 241 and the charging management module 240 may also be provided in the same device.

The wireless communication function of the terminal device 200 can be implemented through the antenna 1, the antenna 2, the mobile communication module 250, the wireless communication module 260, the modem processor and the baseband processor.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in terminal device 200 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example: Antenna 1 can be reused as a diversity antenna for a wireless LAN. In other embodiments, antennas may be used in conjunction with tuning switches.

The mobile communication module 250 can provide wireless communication solutions including 2G/3G/4G/5G applied on the terminal device 200 . The mobile communication module 250 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 250 can receive electromagnetic waves from the antenna 1, perform filtering, amplification and other processing on the received electromagnetic waves, and transmit them to the modem processor for demodulation. The mobile communication module 250 can also amplify the signal modulated by the modem processor and convert it into electromagnetic waves through the antenna 1 for radiation. In some embodiments, at least part of the functional modules of the mobile communication module 250 may be disposed in the processor 210 . In some embodiments, at least part of the functional modules of the mobile communication module 250 and at least part of the modules of the processor 210 may be provided in the same device.

A modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs sound signals through audio devices (not limited to speaker 270A, receiver 270B, etc.), or displays images or videos through display screen 294. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be independent of the processor 210 and may be provided in the same device as the mobile communication module 250 or other functional modules.

The wireless communication module 260 can provide applications on the terminal device 200 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (bluetooth, BT), and global navigation satellites. Wireless communication solutions such as global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (infrared, IR), etc. The wireless communication module 260 may be integrated with at least one communication unit one or more devices of the management module. The wireless communication module 260 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 210 . The wireless communication module 260 can also receive the signal to be sent from the processor 210, frequency modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 for radiation.

In some embodiments, the antenna 1 of the terminal device 200 is coupled to the mobile communication module 250, and the antenna 2 is coupled to the wireless communication module 260, so that the terminal device 200 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), broadband 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 technology, etc. The GNSS may include global positioning system (GPS), global navigation satellite system (GLONASS), Beidou navigation satellite system (BDS), quasi-zenith satellite system (quasi) -zenith satellite system (QZSS) and/or satellite based augmentation systems (SBAS).

The terminal device 200 implements the display function through the GPU, the display screen 294, and the application processor. The GPU is an image processing microprocessor and is connected to the display screen 294 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 210 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 294 is used to display images, videos, etc. Display 294 includes a display panel. The display panel can use a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active matrix organic light emitting diode or an active matrix organic light emitting diode (active-matrix organic light emitting diode). emitting diode (AMOLED), flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, quantum dot light emitting diode (QLED), etc. In some embodiments, the terminal device 200 may include 1 or N display screens 294, where N is a positive integer greater than 1.

The terminal device 200 can implement the shooting function through the ISP, camera 293, video codec, GPU, display screen 294, application processor, etc.

The ISP is used to process the data fed back by the camera 293. For example, when taking a photo, the shutter is opened, the light is transmitted to the camera sensor through the lens, the optical signal is converted into an electrical signal, and the camera sensor passes the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye. ISP can also perform algorithm optimization on image noise, brightness, and skin color. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be provided in the camera 293.

Camera 293 is used to capture still images or video. The object passes through the lens to produce an optical image that is projected onto the photosensitive element. The photosensitive element may be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then passes the electrical signal to the ISP to convert it into a digital image signal. ISP outputs digital image signals to DSP for processing. DSP converts digital image signals into standard RGB, YUV and other format image signals. In some embodiments, the terminal device 200 may include 1 or N cameras 293, where N is a positive integer greater than 1.

Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the terminal device 200 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.

Video codecs are used to compress or decompress digital video. The terminal device 200 may support one or more video codecs. In this way, the terminal device 200 can play or record videos in multiple encoding formats, such as moving picture experts group (MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

NPU is a neural network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transmission mode between neurons in the human brain, it can quickly process input information and can continuously learn by itself. The NPU can realize intelligent cognitive applications of the terminal device 200, such as image recognition, face recognition, speech recognition, text understanding, etc.

The external memory interface 220 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the terminal device 200. The external memory card communicates with the processor 210 through the external memory interface 220 to implement the data storage function. Such as saving music, videos, etc. files in external memory card.

Internal memory 221 may be used to store computer executable program code, which includes instructions. The processor 210 executes instructions stored in the internal memory 221 to execute various functional applications and data processing of the terminal device 200 . The internal memory 221 may include a program storage area and a data storage area. Among them, the stored program area can store an operating system, at least one application program required for a function (such as a sound playback function, an image playback function, etc.). The storage data area may store data created during use of the terminal device 200 (such as audio data, phone book, etc.). In addition, the internal memory 221 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

The terminal device 200 can implement audio functions through the audio module 270, the speaker 270A, the receiver 270B, the microphone 270C, the headphone interface 270D, and the application processor. Such as music playback, recording, etc.

The audio module 270 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. Audio module 270 may also be used to encode and decode audio signals. In some embodiments, the audio module 270 may be provided in the processor 210 , or some functional modules of the audio module 270 may be provided in the processor 210 .

Speaker 270A, also called "speaker", is used to convert audio electrical signals into sound signals. The terminal device 200 can listen to music through the speaker 270A, or listen to a hands-free call.

Receiver 270B, also called "earpiece", is used to convert audio electrical signals into sound signals. When the terminal device 200 answers a call or a voice message, the voice can be heard by bringing the receiver 270B close to the human ear.

Microphone 270C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can speak close to the microphone 270C with the human mouth and input the sound signal to the microphone 270C. The terminal device 200 may be provided with at least one microphone 270C. In other embodiments, the terminal device 200 may be provided with two microphones 270C, which in addition to collecting sound signals, may also implement a noise reduction function. In other embodiments, the terminal device 200 can also be equipped with three, four or more microphones 270C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions, etc.

The headphone interface 270D is used to connect wired headphones. The headphone interface 270D can be a USB interface 230 or a 3.5mm open mobile terminal platform (OMTP) standard interface. Cellular telecommunications industry association of the USA (CTIA) standard interface.

The pressure sensor 280A is used to sense pressure signals and can convert the pressure signals into electrical signals. In some embodiments, pressure sensor 280A may be disposed on display screen 294. There are many types of pressure sensors 280A, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, etc. A capacitive pressure sensor may include at least two parallel plates of conductive material. When a force is applied to pressure sensor 280A, the capacitance between the electrodes changes. The terminal device 200 determines the intensity of the pressure based on the change in capacitance. When a touch operation is performed on the display screen 294, the terminal device 200 detects the intensity of the touch operation according to the pressure sensor 280A. The terminal device 200 may also calculate the touched position based on the detection signal of the pressure sensor 280A. In some embodiments, touch operations acting on the same touch location but with different touch operation intensities may correspond to different operation instructions. For example: when a touch operation with a touch operation intensity less than the first pressure threshold is applied to the short message application icon, an instruction to view the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold is applied to the short message application icon, an instruction to create a new short message is executed.

The gyro sensor 280B may be used to determine the motion posture of the terminal device 200 . In some embodiments, the angular velocity of the terminal device 200 about three axes (ie, x, y, and z axes) may be determined by the gyro sensor 280B. The gyro sensor 280B can be used for image stabilization. For example, when the shutter is pressed, the gyro sensor 280B detects the angle at which the terminal device 200 shakes, calculates the distance that the lens module needs to compensate based on the angle, and allows the lens to offset the shake of the terminal device 200 through reverse movement to achieve anti-shake. The gyro sensor 280B can also be used for navigation and somatosensory gaming scenarios.

Air pressure sensor 280C is used to measure air pressure. In some embodiments, the terminal device 200 calculates the altitude through the air pressure value measured by the air pressure sensor 280C to assist positioning and navigation.

Magnetic sensor 280D includes a Hall sensor. The terminal device 200 may use the magnetic sensor 280D to detect the opening and closing of the flip leather case. In some embodiments, when the terminal device 200 is a flip machine, the terminal device 200 may detect the opening and closing of the flip according to the magnetic sensor 280D. Then, based on the detected opening and closing status of the leather case or the opening and closing status of the flip cover, features such as automatic unlocking of the flip cover are set.

The acceleration sensor 280E can detect the acceleration of the terminal device 200 in various directions (generally three axes). When the terminal device 200 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the posture of terminal devices and be used in applications such as horizontal and vertical screen switching, pedometers, etc.

Distance sensor 280F, used to measure distance. The terminal device 200 can measure distance through infrared or laser. In some embodiments, when shooting a scene, the terminal device 200 can use the distance sensor 280F to measure distance to achieve fast focusing.

Proximity light sensor 280G may include, for example, a light emitting diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The terminal device 200 emits infrared light through a light emitting diode. The terminal device 200 detects infrared reflected light from nearby objects using photodiodes. When sufficient reflected light is detected, it can be determined that there is an object near the terminal device 200 . When insufficient reflected light is detected, the terminal device 200 may determine that there is no object near the terminal device 200 . The terminal device 200 can use the proximity light sensor 280G to detect when the user holds the terminal device 200 close to the ear for talking, so as to automatically turn off the screen to save power. The proximity light sensor 280G can also be used in holster mode, and pocket mode automatically unlocks and locks the screen.

The ambient light sensor 280L is used to sense ambient light brightness. The terminal device 200 can illuminate according to the perceived ambient light. Adaptively adjust the brightness of the display screen 294 degrees. The ambient light sensor 280L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 280L can also cooperate with the proximity light sensor 280G to detect whether the terminal device 200 is in the pocket to prevent accidental touching.

Fingerprint sensor 280H is used to collect fingerprints. The terminal device 200 can use the collected fingerprint characteristics to realize fingerprint unlocking, access application lock, fingerprint photography, fingerprint answering incoming calls, etc.

Temperature sensor 280J is used to detect temperature. In some embodiments, the terminal device 200 uses the temperature detected by the temperature sensor 280J to execute the temperature processing policy. For example, when the temperature reported by the temperature sensor 280J exceeds a threshold, the terminal device 200 reduces the performance of a processor located near the temperature sensor 280J in order to reduce power consumption and implement thermal protection. In other embodiments, when the temperature is lower than another threshold, the terminal device 200 heats the battery 242 to prevent the low temperature from causing the terminal device 200 to shut down abnormally. In some other embodiments, when the temperature is lower than another threshold, the terminal device 200 performs boosting on the output voltage of the battery 242 to avoid abnormal shutdown caused by low temperature.

Touch sensor 280K, also called "touch panel". The touch sensor 280K can be disposed on the display screen 294. The touch sensor 280K and the display screen 294 form a touch screen, which is also called a "touch screen". The touch sensor 280K is used to detect a touch operation on or near the touch sensor 280K. The touch sensor can pass the detected touch operation to the application processor to determine the touch event type. Visual output related to the touch operation may be provided through display screen 294. In other embodiments, the touch sensor 280K may also be disposed on the surface of the terminal device 200 in a position different from that of the display screen 294 .

Bone conduction sensor 280M can acquire vibration signals. In some embodiments, the bone conduction sensor 280M can acquire the vibration signal of the vibrating bone mass of the human body's vocal part. The bone conduction sensor 280M can also contact the human body's pulse and receive blood pressure beating signals. In some embodiments, the bone conduction sensor 280M can also be provided in the earphone and combined into a bone conduction earphone. The audio module 270 can analyze the voice signal based on the vibration signal of the vocal vibrating bone obtained by the bone conduction sensor 280M to implement the voice function. The application processor can analyze the heart rate information based on the blood pressure beat signal obtained by the bone conduction sensor 280M to implement the heart rate detection function.

The buttons 290 include a power button, a volume button, etc. Key 290 may be a mechanical key. It can also be a touch button. The terminal device 200 may receive key input and generate key signal input related to user settings and function control of the terminal device 200 .

The motor 291 can generate vibration prompts. The motor 291 can be used for vibration prompts for incoming calls and can also be used for touch vibration feedback. For example, touch operations for different applications (such as taking pictures, audio playback, etc.) can correspond to different vibration feedback effects. Acting on touch operations in different areas of the display screen 294, the motor 291 can also correspond to different vibration feedback effects. Different application scenarios (such as time reminders, receiving information, alarm clocks, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also be customized.

The indicator 292 may be an indicator light, which may be used to indicate charging status, power changes, or may be used to indicate messages, missed calls, notifications, etc.

The SIM card interface 295 is used to connect a SIM card. The SIM card can be inserted into the SIM card interface 295 or pulled out from the SIM card interface 295 to realize contact and separation from the terminal device 200 . The terminal device 200 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. SIM card interface 295 can support Nano SIM card, Micro SIM card, SIM card, etc. Multiple cards can be inserted into the same SIM card interface 295 at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 295 is also compatible with different types of SIM cards. The SIM card interface 295 is also compatible with external memory cards. The terminal device 200 interacts with the network through the SIM card to realize calls and data. data communication and other functions. In some embodiments, the terminal device 200 adopts eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the terminal device 200 and cannot be separated from the terminal device 200 .

The communication system and terminal equipment of the embodiments of the present application are introduced above. The following describes the relevant terms involved in the embodiments of the present application.

Dual SIM dual standby (DSDS)

A dual-card mode supported by the terminal device can also be understood as the dual-card capability of the terminal device, and the receiving antennas of the dual-card cards are time-shared and multiplexed. In DSDS mode, the terminal device does not support concurrent dual-card services. The specific manifestations are: (1) When one card performs call services, the other card cannot perform data services (i.e., access the Internet); (2) When one card performs data services , although the other card can receive incoming calls, the incoming calls will interrupt the data service.

For the main card in the dual card, the call service of the secondary card will make the main card unable to perform data services. Moreover, the secondary card is required to search the network, measure, track area update (TAU), SMS, MMS, cycle Behaviors such as sexual registration will seize the antenna, making the main card's Internet experience poor.

Dual receiver, dual card, dual standby (dual receiver-dual sim dual dtandby, DR-DSDS)

Another dual-card mode supported by the terminal device can also be understood as another dual-card capability of the terminal device. The receiving antennas of the dual cards can be diversity multiplexed, that is, one card uses the main set and the other card uses the diversity. Can receive at the same time, but cannot send at the same time. In DR-DSDS mode, (1) when one card performs call service, the other card has a signal, but cannot respond to paging, and cannot perform TAU; (2) when one card performs data service, the other card performs uplink During transmission, the radio frequency (RF) antenna needs to be preempted, thus affecting the experience of the card performing data services.

Dual SIM dual active (DSDA)

Another dual-SIM mode supported by the terminal device can also be understood as another dual-SIM capability of the terminal device. In DSDA mode, the terminal device supports dual-card business concurrency, that is, two cards can send or receive at the same time. When one card performs call services, the other card can receive incoming calls and perform data services (i.e., surf the Internet).

The DSDA mode may further include two modes, a DSDA transmit sharing mode and a DSDA transmit exclusive mode. In the DSDA transmission sharing mode, the two cards share an antenna and transmit in a time-sharing manner during uplink transmission. The two cards use different antennas during downlink transmission. However, since the uplink transmission of the two cards shares an antenna, the performance of the user's Internet access There is a loss of experience. In DSDA transmission exclusive mode, the two cards use different antennas for uplink transmission and different antennas for downlink transmission. Uplink transmission and downlink transmission are completely independent, and the user's online performance experience is basically without loss. Better performance experience than in DSDA launch exclusive mode.

Non-standalone networking (non-standalone, NSA) and independent networking (standalone, SA)

With the development of 5G, 5G includes two networking methods: NSA and SA.

NSA refers to the deployment of 5G networks using existing 4G core network and other facilities. It is a networking method that integrates 4G and 5G. The 5G carrier based on the NSA architecture only carries user data, and control signaling is still transmitted through the 4G network. In NSA, 5G cannot work alone. It only serves as a supplement to 4G and shares 4G traffic.

SA refers to the new 5G network, including new base stations, backhaul links and core networks. While SA introduces new network elements and interfaces, it will also adopt new technologies such as network virtualization and software-defined networks on a large scale and combine them with 5G NR. At the same time, it faces technical challenges in protocol development, network planning and deployment, and interoperability. Will surpass 3G and 4G systems. The current SA has two networking methods. One networking method uses 5G base stations to connect to the 5G core network. This is the ultimate form of 5G network architecture and can support all 5G applications, but it costs a lot; the other networking method square The method is to upgrade the existing 4G base station into an enhanced 4G base station, and connect the enhanced 4G base station to the 5G core network, which costs less.

In the embodiment of this application, 4G can be used as an alternative description of LTE, and 5G can be used as an alternative description of NR. Unless otherwise specified, the two can be used as alternative descriptions.

As mentioned before, compared to DSDS mode, DSDA mode has a better user experience. However, the current mainstream chips in terminal equipment on the market do not have perfect support for DSDA mode. In many scenarios, terminal equipment is in DSDS mode instead of DSDA mode, thus reducing the user experience. It can be seen that by making the terminal device in the DSDA mode as much as possible, the user experience can be improved.

The dual-card mode supported by the terminal device is related to the network and frequency band in which each card is located. Currently, some frequency bands of the NR SA network and some frequency bands of the LTE network support the DSDA mode, and some frequency bands of the NR SA network and parts of the NR SA network The frequency band can support DSDA mode, where NR SA represents the 5G network, specifically indicating the 5G network with SA networking mode, referred to as NR SA, and LTE represents the 4G network.

DSDA mode includes one or more DSDA combinations, and DSDA combinations include the network type and frequency band of dual cards. For ease of description, the DSDA combination can be expressed in the form of "network 1 frequency band number + network 2 frequency band number". In addition, the frequency band of the LTE network can be referred to as the LTE frequency band, and the frequency band of the NR network can be referred to as the NR frequency band. The LTE frequency band can be represented by the LTE band number, and the LTE band number can be represented by Bx, where x is an integer greater than 0, for example, B1 , similarly, the NR frequency band can be represented by the NR band number, and the NR band number can be represented by nx, where n is an integer greater than 0, for example, n78.

For example, a DSDA combination in DSDA mode is NR SA n41+LTE B1, which means that one card resides in the frequency band indicated by n41 in the NR SA network. n41 is the NR frequency band number, indicating an NR frequency band and another card. It resides in the frequency band indicated by B1 in the LTE network. B1 represents the LTE frequency band number and represents an LTE frequency band.

As can be seen from the above, as long as the network type and frequency band of the network where the two cards currently reside meet the network type and frequency band of any DSDA combination in the DSDA mode, the DSDA mode can be formed between the two cards, and the terminal device can be in DSDA mode. model. Based on this, the embodiments of this application propose that by improving the network parking process in each scenario, when it is determined that the dual cards have a chance to form the DSDA mode, the frequency band of at least one card is adjusted so that the dual cards can camp in the DSDA mode. In a DSDA combination, the frequency bands corresponding to the two cards enable a DSDA mode to be formed between the two cards. In this way, the terminal device is in DSDA mode, which can improve the user experience.

It should be noted that the embodiment of this application defaults to the network where dual cards reside. There is no need to adjust the network where a certain card resides. Only the frequency band of the network where a certain card currently resides is adjusted.

Below, combined with the accompanying drawings, the dual-card communication methods in different scenarios are explained in detail.

In the embodiment of this application, card 1 is one of the primary card and the secondary card, and card 2 is the other of the primary card and the secondary card, without any limitation. If there is no special explanation, the explanation of Card 1 and Card 2 below is the same as here, and will not be repeated again.

Figure 3 is a schematic flow chart of a dual-card communication method 300 provided by an embodiment of the present application. The method 300 can be executed by a terminal device that supports dual-SIM communication or by a chip in the terminal device. The embodiments of this application do not impose any limitations. For ease of description, method 300 will be described in detail by taking a terminal device as an example.

The embodiment shown in method 300 is a scenario in which the terminal device is powered on to select a cell. During the process of powering on the terminal device and selecting a cell, the relevant design is used to ensure that the dual cards reside on the frequency band that can form the DSDA mode. In method 300, the network where the dual cards currently reside is defaulted. After one card has camped in a certain frequency band, the other card preferentially selects the frequency band that can form the DSDA mode to camp.

In S310, the terminal device determines that card 1 has completed parking of the frequency band and card 2 has not performed parking of the frequency band.

In this step, card 1 has completed parking the frequency band, and card 2 has not yet had time to park the frequency band. Among them, the frequency band that the card 1 currently resides in is any frequency band supported by the terminal device, and the embodiment of this application does not make any limitation.

It should be understood that after card 1 completes the camping of the frequency band, the network where card 1 is camping must also be determined. The frequency band where card 1 is currently camping is the frequency band in the network where card 1 is currently camping. For example, the frequency band that card 1 currently resides on is the frequency band indicated by n41, and the frequency band indicated by n41 is the frequency band in the NR network.

In S320, the terminal device determines the first candidate frequency band of the card 2 that meets the preset conditions. Wherein, the first candidate frequency band includes one or more frequency bands.

In this step, the terminal device measures multiple cells to determine whether there is a first candidate frequency band of the card 2 that meets the preset conditions in the multiple cells. If it exists, S330 is continued. If it does not exist, the process ends.

In some embodiments, the preset conditions include: the cell satisfies the S criterion, and the frequency band of the cell can form a DSDA mode supported by the terminal device with the frequency band where the card 1 currently resides.

The S criterion is a criterion for judging whether a certain cell can camp. Specifically, the S criterion can be: the received power of a certain cell Srxlev>0dB and the signal quality of the received signal of a certain cell Squal>0dB during cell search. When a certain cell satisfies the S criterion, the terminal device can camp on the certain cell. The following is a brief introduction to the S criterion. For specific descriptions of the S criterion, please refer to the relevant descriptions in the 3GPP standards and will not be repeated.

The formula of the received power Srxlev is as follows: Srxlev=Qrxlevmeas-Qrxlevmin-Pcompensation.

Among them, Qrxlevmeas is the received signal code power (RSCP) value of the primary common control physical channel (primary common control physical channel, P-CCPCH) of the cell (that is, the currently measured cell), commonly known as the "level value" ". Qrxlevmin is the minimum received power of the cell. This parameter can be read from the system broadcast message. Generally, the terminal equipment needs to perform certain arithmetic conversion after reading it out. Pcompensation is a compensation value, which is the difference between the maximum transmit power allowed by the network and the maximum transmit power of the terminal power level. It can be obtained by the following formula: Pcompensation=max(UE_TXP-WR_MAX_RACH-P_MAX, 0), UE_TXPWR_MAX_RACH is the terminal device doing random operation. The maximum transmission power allowed on the random access channel (RACH) during access is sent by the system broadcast message. P_MAX is the maximum transmission power of the terminal device.

The formula of signal quality Squal is as follows: Squal=Qqualmeas–(Qqualmin+Qqualminoffset).

Among them, Qqualmeas is the reference signal receiving quality (RSRQ) value of the cell, Qqualmin is the minimum RSRQ value of the cell access, and Qqualminoffset is the minimum RSRQ offset value of the cell access.

Exemplarily, in implementation, the terminal device measures multiple cells and first determines at least one cell that satisfies the S criterion. One cell corresponds to one frequency point and one frequency point corresponds to one frequency band (or, one cell corresponds to one frequency band). At least one frequency band corresponding to the at least one cell is called an initial candidate frequency band. The terminal device then determines from the initial candidate frequency bands according to the DSDA mode information of the terminal device that can form a DSDA mode supported by the terminal device with the frequency band where card 1 currently resides. The first candidate frequency band.

It should be understood that the frequency point here represents the center frequency point, and the frequency point represents the number of the fixed frequency. According to the fixed frequency The frequency band can be obtained at the rate.

It should also be understood that the frequency bands in the first candidate frequency band are some or all of the initial candidate frequency bands. If all the frequency bands in the initial candidate frequency band can form the DSDA mode supported by the terminal device with the frequency band where card 1 currently resides, the frequency band of the first candidate frequency band is all the frequency bands of the initial candidate frequency band; if some of the frequency bands in the initial candidate frequency band can and the frequency band where card 1 currently resides forms the DSDA mode supported by the terminal device, then the first candidate frequency band is part of the initial candidate frequency band.

It should be noted that each frequency band in the first candidate frequency band and the frequency band where card 1 currently resides can form a DSDA combination supported by the terminal device. For example, the first candidate frequency band includes N frequency bands, which means that the first candidate frequency band The N frequency bands in and the frequency band where card 1 currently resides can form N DSDA combinations supported by the terminal device.

DSDA mode information is used to indicate all DSDA combinations supported by the terminal device that can form a DSDA mode. Each DSDA combination includes the network type and frequency band of the dual card. During implementation, DSDA mode information can be pre-configured in the terminal device.

It should be understood that the DSDA combinations supported by the same terminal device are fixed, and the DSDA combinations supported by different terminal devices may be the same or different. The details may be determined based on the model or hardware information of the terminal device. For the convenience of description, the combinations of dual-card modes supported by a certain terminal device are listed in Table 1. In Table 1, the DSDA mode has 3 DSDA combinations. The DSDA transmission sharing mode is formed by NR SA n1+NR SA n1 The DSDA combination is the DSDA combination formed by NR SA n1+NR SA n78 in the DSDA transmission exclusive mode, and the DSDA combination formed by NR SA n1+LTE B41 in the DSDA transmission exclusive mode. Among them, the three DSDA combinations in Table 1 can be all DSDA combinations supported by the terminal device indicated by the DSDA mode information.

Table 1

The following is an example of a process in which the terminal device determines the first candidate frequency band of the card 2 .

Assume that the frequency band currently occupied by card 1 is frequency band 11 of network 1. The initial candidate frequency bands determined by card 2 that meet the S criterion include four frequency bands of network 2, namely frequency band 21, frequency band 22, frequency band 23 and frequency band 24. The terminal All DSDA combinations supported by the terminal device indicated by the device's DSDA mode information include 3 DSDA combinations, namely: DSDA combination 1 formed by "Network 1 Band 11 + Network 2 Band 21", and, formed by "Network 1 Band 11 + DSDA combination 2 formed by "network 2 frequency band 22", and DSDA combination 3 formed by "network 1 frequency band 12 + network 2 frequency band 23". It can be seen that frequency band 11 of network 1 (the frequency band where card 1 currently resides) and frequency band 21 in the initial candidate frequency band can form the DSDA combination 1 supported by the terminal device. Frequency band 11 of network 1 (the frequency band where card 1 currently resides) The frequency band 22 in the initial candidate frequency band can form the DSDA combination 2 supported by the terminal device. The frequency band 23 in the initial candidate frequency band cannot form a DSDA combination with the frequency band 11 of the network 1 (the frequency band where the card 1 currently resides). Therefore, the initial candidate frequency band The frequency band 23 in cannot become the first candidate frequency band. In addition, the DSDA combination supported by the terminal device does not include the frequency band 24 of network 2. Therefore, the frequency band 24 in the initial candidate frequency band cannot become the first candidate frequency band. Therefore, frequency band 21 and frequency band 22 are determined as the first candidate frequency bands.

In S330, the terminal device determines the target frequency band from the first candidate frequency band and parks the card 2 on the target frequency band.

If the first candidate frequency band includes one frequency band, this unique frequency band is determined as the target frequency band. If the first candidate frequency band includes multiple frequency bands, then a certain frequency band among the multiple frequency bands is determined as the target frequency band. The target frequency band can be any one of the multiple frequency bands, or it can be a certain frequency band determined according to the rules. Frequency band, there is no limitation here.

In the embodiment where the first candidate frequency band includes multiple frequency bands, the terminal device determines the frequency band with the highest priority among the first candidate frequency bands as the target frequency band.

In some embodiments, the frequency band with the highest priority is the frequency band with the best dual-card mode capability in the DSDA mode formed by the frequency band where card 1 currently resides in the first candidate frequency band. That is to say, the frequency band with the best dual-card mode capability in the DSDA mode formed by the frequency band where card 1 currently resides in the first candidate frequency band is the target frequency band.

In this embodiment, the priority of the frequency band in the first candidate frequency band is defined based on the capability of dual-SIM mode. The better the capability of dual-SIM mode formed by a certain frequency band in the first candidate frequency band and the frequency band where card 1 currently resides, the higher the priority of this certain frequency band. On the contrary, the higher the priority of a certain frequency band in the first candidate frequency band and the current frequency band of card 1. The worse the capability of the dual-SIM mode formed by the resident frequency band, the lower the priority of a certain frequency band. The capabilities of dual-SIM mode from high to low are: DSDA transmitter exclusive > DSDA transmitter shared > DR-DSDS > DSDS.

In other embodiments, the frequency band with the highest priority is the frequency band with the strongest signal among the first candidate frequency bands. That is to say, the frequency band with the strongest signal among the first candidate frequency bands is the target frequency band.

In this embodiment, the priority of the frequency band in the first candidate frequency band is defined based on the signal strength of the frequency band. The better the signal strength of a certain frequency band in the first candidate frequency band, the higher the priority of this certain frequency band. On the contrary, the worse the signal strength of a certain frequency band in the first candidate frequency band, the lower the priority of this certain frequency band.

It should be noted that the priority of the frequency bands in the first candidate frequency band defined above can be used alone or in combination.

When combining the priorities of the above frequency bands, in some embodiments, the capability of the dual-SIM mode is combined with the signal strength of the frequency band. The priority of the frequency band is first considered based on the capability of the dual-SIM mode, and then the signal strength of the frequency band is considered. Consider band priority. Generally, if there are multiple frequency bands in the first candidate frequency band that have the best dual-card mode capabilities in the DSDA mode formed by the frequency band where card 1 currently resides, the target frequency band can be further determined by combining the signal strength of the frequency bands.

Figure 4 is a schematic flow chart of a dual-card communication method 400 provided by an embodiment of the present application. The method 400 can be executed by a terminal device that supports dual-SIM communication or by a chip in the terminal device. The embodiments of this application do not impose any limitations. For ease of description, method 400 will be described in detail by taking a terminal device as an example.

The embodiment shown in method 400 is a scenario in which a terminal device performs cell reselection after it has camped in a cell. Cell reselection refers to the process in which the terminal equipment selects a cell with the best signal to provide service signals by monitoring the signal quality of neighboring cells and the current serving cell in idle mode. When the signal quality Squal and received power Srxlev of the neighboring cell satisfy S When certain reselection criteria are met and certain reselection criteria are met, the terminal device can connect a card to the neighboring cell to camp on the frequency band of the neighboring cell.

During the cell reselection process of the terminal equipment in the embodiment of the present application, the relevant design is used to ensure that the dual cards reside on the frequency band that can form the DSDA mode. In method 400, the network of the cell where the dual cards currently reside is defaulted, and the frequency band where a certain card resides is adjusted so that a DSDA mode is formed between the dual cards.

In S410, the terminal device determines that card 1 and card 2 have completed parking of the frequency band.

In S420, the terminal device determines whether the DSDA mode is formed between card 1 and card 2.

If the terminal device determines that the DSDA mode has been formed between the dual cards, the process ends; if the terminal device determines that the DSDA mode has not been formed between the dual cards, step S430 is continued to enable DSDA to be formed between the dual cards as much as possible under the condition that certain conditions are met. mode to put the terminal device in DSDA mode.

In this embodiment of the present application, the DSDA mode of the terminal device is determined by the concurrency capability of the RF front end. Therefore, the dual-SIM mode of the terminal device can be identified through the RF driver.

In S430, the terminal device determines the neighboring cell frequency point of card 1.

In this step, the terminal device determines the adjacent cell frequency points of the same system and/or different systems where the card 1 is located. In implementation, you can first determine the frequency points of neighboring cells in the same system, and then determine the frequency points of neighboring cells in different systems. Among them, the neighboring frequency points of card 1 include one or more frequency points.

In S440, the terminal device determines whether there is a first candidate frequency band for card 1 that satisfies preset condition 1 based on the neighboring cell frequency point of card 1.

One frequency point corresponds to one frequency band. Therefore, the frequency band corresponding to each frequency point can be obtained according to the neighboring frequency points of card 1, and then the first candidate frequency band of card 1 that meets the preset conditions is obtained.

In this step, card 2 still resides in the current frequency band and does not adjust the frequency band of card 2. It determines whether there is a first candidate frequency band for card 1 that meets the preset condition 1 based on the neighboring frequency points of card 1 to adjust card 1. frequency band. If the first candidate frequency band of card 1 that meets the preset condition 1 exists in the neighboring frequency point of card 1, which means that there is a chance to form a DSDA mode between the two cards, then continue to step S450; if the neighboring frequency point of card 1 There is no first candidate frequency band for card 1 that meets preset condition 1, which means that the frequency band corresponding to any frequency point in the neighboring frequency points of card 1 cannot form a DSDA mode with the frequency band where card 2 currently resides. Therefore, , you can try to adjust the frequency band of card 2 without adjusting the frequency band of card 1, that is, perform step S460, which will be described in detail later.

In some embodiments, the preset condition 1 is: the neighboring cell satisfies the S criterion and the R criterion, and the frequency band of the neighboring cell can form a DSDA mode with the frequency band where the card 2 currently resides.

For the specific description of the S criterion, please refer to the relevant description above and will not be repeated again.

Specifically, the R criterion can be: within the Treselection time (the Treselection of the same frequency and the inter-frequency may be different), if the Rn of the neighboring cell continues to exceed the Rs of the serving cell, the terminal device will reselect to the neighboring cell.

Rn and Rs respectively satisfy the following formulas: Rs=Qmeas,s+QHyst, Rt=Qmeas,n–Qoffset. Among them, Qmeas is the reference signal receiving power (RSRP) value of the measurement cell, Qmeas,s is the RSRP value of the serving cell, Qmeas,n is the RSRP value of the neighboring cell, and Qoffset defines the offset of the neighboring cell. The offset value, for inter-frequency cells with the same priority, includes two parts: a cell-based offset value and a frequency-based offset value. For specific descriptions of the R criterion, please refer to the relevant descriptions in the 3GPP standards and will not be described again.

Exemplarily, in the implementation, the terminal device first determines the initial candidate frequency band of card 1 that satisfies the S criterion and the R criterion based on the neighboring cell frequency point of card 1, and then selects the initial candidate frequency band of card 1 from the initial candidate frequency band of card 1 based on the DSDA mode information of the terminal device. Determine the first candidate frequency band of card 1 that can form a DSDA mode with the frequency band where card 2 currently resides.

Specifically, one cell corresponds to one frequency point and one frequency point corresponds to one frequency band (or, in other words, one cell has one frequency band). The terminal device determines at least one neighboring cell that satisfies the S criterion and the R criterion from the neighboring cell frequency points of card 1. Corresponding to at least one frequency point (at least one neighboring cell corresponds to at least one frequency point one-to-one), determine the corresponding frequency band according to each frequency point, and obtain at least one frequency band. The at least one frequency band is collectively referred to as the initial candidate frequency band of card 1; Then, based on the DSDA mode information of the terminal device, the first candidate frequency band of card 1 that can form a DSDA mode with the frequency band where card 2 currently resides is determined from the initial candidate frequency bands of card 1 .

For a detailed description of the DSDA mode information of the terminal device, please refer to the relevant description above. For a detailed description of the relationship between the first candidate frequency band of card 1 and the initial candidate frequency band of card 1, please refer to the above description of the relationship between the first candidate frequency band and the initial candidate frequency band of card 1. The relevant description of the initial candidate frequency band will not be described again.

It should be noted that each frequency band in the first candidate frequency band of card 1 and the frequency band currently occupied by card 2 can form a DSDA combination supported by the terminal device. For example, the first candidate frequency band of card 1 includes N frequency bands. This means that the N frequency bands in the first candidate frequency band of card 1 and the frequency band where card 2 currently resides can form N DSDA combinations supported by the terminal device.

The following is an example of a process in which the terminal device determines the first candidate frequency band of the card 1 .

Assume that the frequency band currently occupied by card 2 is frequency band 21 of network 2. The initial candidate frequency bands of card 1 that meet the S criterion and R criterion include four frequency bands of network 1, namely frequency band 11, frequency band 12, frequency band 13 and Band 14, all DSDA combinations supported by the terminal equipment indicated by the DSDA mode information of the terminal equipment, there are 3 DSDA combinations, namely: DSDA combination 1 formed by "Network 1 Frequency Band 11 + Network 2 Frequency Band 21", and, formed by "Network 1 Frequency Band 11 + Network 2 Frequency Band 21" DSDA combination 2 is formed by "1 band 12 + network 2 band 21", and DSDA combination 3 is formed by "network 1 band 13 + network 2 band 22". It can be seen that frequency band 21 of network 2 (the frequency band where card 2 currently resides) and frequency band 11 in the initial candidate frequency band of card 1 can form the DSDA combination 1 supported by the terminal device. Frequency band 21 of network 2 (where card 2 currently resides) The frequency band) and the frequency band 12 in the initial candidate frequency band of card 1 can form the DSDA combination 2 supported by the terminal device. The frequency band 13 in the initial candidate frequency band of card 1 cannot be combined with the frequency band 21 of network 2 (the frequency band where card 2 currently resides) A DSDA combination is formed, so frequency band 13 in the initial candidate frequency band of card 1 cannot become the first candidate frequency band. In addition, the DSDA combination supported by the terminal device does not include frequency band 14 of network 1. Therefore, frequency band 13 in the initial candidate frequency band of card 1 Band 14 cannot be the first candidate band either. Therefore, frequency band 11 and frequency band 12 are determined as the first candidate frequency band of card 1. In this way, the first candidate frequency band of card 1 that meets the preset condition 1 is obtained.

It should be noted that the initial candidate frequency band and the first candidate frequency band described in steps S440 and S450 are both relevant frequency bands of card 1, while the initial candidate frequency band and the first candidate frequency band described in steps S460 and S470 are both card 2 Relevant frequency bands, unless otherwise specified, the explanations about these frequency bands in method 400 shall be subject to the explanations here, and will not be described again below.

In S450, the terminal device determines the target frequency band 1 from the first candidate frequency band of the card 1, and adjusts the frequency band of the card 1 so that the card 1 resides on the target frequency band 1.

If the first candidate frequency band of card 1 includes one frequency band, this unique frequency band is determined as target frequency band 1. If the first candidate frequency band of card 1 includes multiple frequency bands, then determine one of the multiple frequency bands as the target frequency band 1. The target frequency band 1 can be any one of the multiple frequency bands, or it can be based on A certain frequency band determined by the rules, there are no restrictions here.

In an embodiment where the first candidate frequency band of card 1 includes multiple frequency bands, the terminal device determines the frequency band with the highest priority among the first candidate frequency bands of card 1 as target frequency band 1.

In some embodiments, the frequency band with the highest priority is the frequency band with the best dual-card mode capability in the DSDA mode formed by the first candidate frequency band of card 1 and the frequency band where card 2 currently resides. That is to say, among the first candidate frequency bands of card 1 and the frequency band where card 2 currently resides, the frequency band with the best dual-card mode capability in the DSDA mode is the target frequency band 1.

In other embodiments, the frequency band with the highest priority is the frequency band with the strongest signal among the first candidate frequency bands of card 1 . In other words, the frequency band with the strongest signal among the first candidate frequency bands of card 1 is target frequency band 1.

It should be noted that the priority of the frequency bands in the first candidate frequency band of the above-mentioned card 1 can be used alone or in combination. For specific description, please refer to the relevant description above and will not be described again.

For the detailed description of determining the target frequency band 1 from the first candidate frequency band of the card 1, please refer to the above related description of determining the target frequency band from the first candidate frequency band, which will not be described again.

In S460, the terminal device determines the neighboring cell frequency point of card 2.

When the terminal device determines that there is no first candidate frequency band for card 1 that satisfies preset condition 1 based on the neighboring frequency points of card 1, it means that the frequency corresponding to any one of the neighboring frequency points of card 1 None of the frequency bands can form a DSDA mode with the frequency band where card 2 currently resides. Therefore, you can try to adjust the frequency band of card 2 without adjusting the frequency band of card 1, that is, perform step S460.

In this step, the terminal device determines the adjacent cell frequency points of the same system and/or different systems where the card 2 is located. In implementation, you can first determine the frequency points of neighboring cells in the same system, and then determine the frequency points of neighboring cells in different systems. Among them, the neighboring frequency points of card 2 include one or more frequency points.

In S470, the terminal device determines whether there is a first candidate frequency band for card 2 that satisfies preset condition 2 based on the neighboring cell frequency point of card 2.

One frequency point corresponds to one frequency band. Therefore, the frequency band corresponding to each frequency point can be obtained according to the neighboring frequency points of card 2, and then the first candidate frequency band of card 2 that meets the preset condition 2 is obtained.

In this step, card 1 still resides in the current frequency band, does not adjust the frequency band of card 1, and determines whether there is a first candidate frequency band for card 2 that meets the preset condition 2 based on the neighboring frequency points of card 2. If the first candidate frequency band of card 2 that meets the preset condition 2 exists in the neighboring frequency point of card 2, which means that there is a chance to form a DSDA mode between the two cards, then continue to step S480. If the neighboring frequency point of card 2 There is no first candidate frequency band for card 2 that meets preset condition 2, which means that the frequency band corresponding to any frequency point in the neighboring frequency points of card 1 cannot form a frequency band with the frequency band where card 2 currently resides. DSDA mode, end the process.

In some embodiments, the preset condition 2 is: the neighboring cell satisfies the S criterion and the R criterion, and the frequency band of the neighboring cell can form a DSDA mode with the frequency band where the card 1 currently resides.

For specific descriptions of the S criterion and the R criterion, please refer to the relevant descriptions above and will not be described again.

Exemplarily, in implementation, the terminal device first determines the initial candidate frequency band of card 2 that satisfies the S criterion and the R criterion based on the neighboring cell frequency point of card 1, and then determines the initial candidate frequency band of card 2 from the initial candidate frequency band of card 2 based on the DSDA mode information of the terminal device. Determine the first candidate frequency band of card 2 that can form a DSDA mode with the frequency band where card 1 currently resides.

Here, the process of determining the initial candidate frequency band of card 2 and the first candidate frequency band of card 2 is similar to the process of determining the initial candidate frequency band of card 1 and the first candidate frequency band of card 1 above. Regarding determining the initial candidate frequency band of card 2 and For a specific description of the first candidate frequency band of card 2, reference may be made to the relevant description above and will not be described again.

In S480, the terminal device determines the target frequency band 2 from the first candidate frequency band of the card 2, and adjusts the frequency band of the card 2 so that the card 2 resides on the target frequency band 2.

If the first candidate frequency band of card 2 includes one frequency band, this unique frequency band is determined as target frequency band 2. If the first candidate frequency band of card 2 includes multiple frequency bands, then a certain frequency band in the multiple frequency bands is determined as the target frequency band 2. The target frequency band 2 can be any one of the multiple frequency bands, or it can be based on A certain frequency band determined by the rules, there are no restrictions here.

In an embodiment in which the first candidate frequency band of the card 2 includes multiple frequency bands, the terminal device determines the frequency band with the highest priority among the first candidate frequency bands of the card 2 as the target frequency band 2.

In some embodiments, the frequency band with the highest priority is the frequency band with the best dual-card mode capability in the DSDA mode formed by the first candidate frequency band of card 2 and the frequency band where card 1 currently resides. That is to say, among the first candidate frequency bands of card 2 and the frequency band where card 1 currently resides, the frequency band with the best dual-card mode capability in the DSDA mode is the target frequency band 2.

In other embodiments, the frequency band with the highest priority is the frequency band with the strongest signal among the first candidate frequency bands of the card 2 . In other words, the frequency band with the strongest signal among the first candidate frequency bands of card 2 is target frequency band 2.

It should be noted that the priority of the frequency bands in the first candidate frequency band of the above-mentioned card 2 can be used alone or in combination. For specific description, please refer to the relevant description above and will not be described again.

For the specific description of determining the target frequency band 2 from the first candidate frequency band of the card 2, please refer to the above related description of determining the target frequency band from the first candidate frequency band, which will not be described again.

It should be understood that the size of the sequence numbers of the steps in the above method 400 does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

In some embodiments, in S440, if the terminal device determines that there is no first candidate frequency band for card 1 that meets preset condition 1, the process can be ended directly without trying to adjust the frequency band of card 2.

In some embodiments, in S430, the terminal device can determine the neighboring frequency band of card 1 and the neighboring frequency point of card 2 in advance. In S440, if the terminal device determines that there is no third frequency band of card 1 that meets the preset condition 1, For a candidate frequency band, S470 can be executed directly based on the neighboring frequency band of card 2 determined in advance.

In some embodiments, the order of adjustment card 1 and adjustment card 2 can be adjusted, that is, after S420, S460-S480 can be executed first, and when the conditions are not met, S430-S450 can be executed again.

Figure 5 is a schematic flow chart of a dual-card communication method 500 provided by an embodiment of the present application. Same as above method Embodiment, for convenience of description, the method 500 is described in detail by taking a terminal device as an example.

Similar to method 400, the embodiment shown in method 500 is also a scenario where the terminal device performs cell reselection after it has camped in a cell. The difference from method 400 is that the terminal device detects the neighboring frequency points of card 1 and card 2 in advance, and determines that card 1 and card 2 can form at least one DSDA combination in the DSDA mode based on the neighboring frequency points of card 1 and card 2. , adjust the frequency band in which card 1 and card 2 reside according to a certain DSDA combination in at least one DSDA combination, so that card 1 and card 2 reside in the frequency band corresponding to the two cards in the certain DSDA combination.

In method 500, the network of the cell where card 1 and card 2 currently reside is defaulted, and the frequency bands where card 1 and card 2 reside are adjusted so that a DSDA mode is formed between the two cards.

In S510, the terminal device determines that card 1 and card 2 have completed parking of the frequency band.

In S520, the terminal device determines whether the DSDA mode is formed between card 1 and card 2.

For the relevant description of S520, please refer to the relevant description of S420, which will not be described again.

In S530, the terminal device determines the neighboring cell frequency point of card 1 and the neighboring cell frequency point of card 2.

For the relevant description of S530, please refer to the relevant description of S430 and S460, and will not be described again.

In S540, the terminal device determines the initial candidate frequency band of card 1 and the initial candidate frequency band of card 2.

In this step, the terminal device determines the initial candidate frequency band of card 1 based on the neighboring cell frequency point of card 1, and determines the initial candidate frequency band of card 2 based on the neighboring cell frequency point of card 2. One frequency point corresponds to one frequency band. Therefore, the frequency band corresponding to each frequency point can be obtained based on the neighboring cell frequency points, and then the initial candidate frequency bands for Card 1 and Card 2 are obtained.

In the process of the terminal device determining the initial candidate frequency band of card 1 based on the neighboring cell frequency point of card 1, the terminal device determines the initial candidate frequency band of card 1 that satisfies the S criterion and the R criterion based on the neighboring cell frequency point of card 1.

Specifically, one cell corresponds to one frequency point, and one frequency point corresponds to one frequency band. The terminal device determines from the neighboring cell frequency points of card 1 at least one frequency point corresponding to at least one neighboring cell that satisfies the S criterion and the R criterion (at least one neighboring cell area corresponds one-to-one with at least one frequency point), the corresponding frequency band is determined according to each frequency point, and at least one frequency band is obtained. The at least one frequency band is collectively referred to as the initial candidate frequency band of card 1.

The process in which the terminal device determines the initial candidate frequency band of card 2 based on the neighboring cell frequency of card 2 is similar to the process in which the terminal device determines the initial candidate frequency band of card 1 based on the neighboring cell frequency of card 1, and will not be described again.

In S550, the terminal device determines whether at least one DSDA combination supported by the terminal device can be formed between the initial candidate frequency band of card 1 and the initial candidate frequency band of card 2. Each DSDA combination includes one of the initial candidate frequency bands for Card 1 and one of the initial candidate frequency bands for Card 2.

In this step, the terminal device may determine, based on the DSDA mode information of the terminal device, whether at least one DSDA combination supported by the terminal device can be formed between the initial candidate frequency bands of the two cards. If the initial candidate frequency bands of the two cards can form at least one DSDA combination supported by the terminal device, which means that the dual cards have the opportunity to form a DSDA mode, then execute S560; if the initial candidate frequency bands of the two cards cannot form a combination supported by the terminal device. At least one DSDA combination, the process ends.

The following is an example of a process in which the terminal device determines at least one DSDA combination supported by the terminal device.

Assume that card 1 resides in network 1, and the initial candidate frequency band of card 1 includes three frequency bands of network 1, namely: frequency band 11, frequency band 12, and frequency band 14. Card 2 resides in network 2, and the initial candidate frequency band of card 2 Including 2 frequency bands of network 2, namely frequency band 21 and frequency band 22. All DSDA combinations supported by the terminal device indicated by the DSDA mode information of the terminal device include 3 DSDA combinations, namely: "Network 1 frequency band 11 + Network 2 frequency band" DSDA combination 1 formed by "21", and the DSDA group formed by "Network 1 frequency band 12 + Network 2 frequency band 21" Combined 2, DSDA combination 3 formed by "Network 1 frequency band 14 + Network 2 frequency band 21". Therefore, band 11 in card 1's initial candidate band and band 21 in card 2's initial candidate band may form DSDA combination 1, band 12 in card 1's initial candidate band and band 21 in card 2's initial candidate band DSDA combination 2 can be formed. Therefore, the initial candidate frequency band of card 1 and the initial candidate frequency band of card 2 can form a DSDA combination, and two DSDA combinations can be formed.

In S560, the terminal device adjusts the frequency bands of card 1 and card 2 according to the target DSDA combination in at least one DSDA combination, so that card 1 and card 2 respectively reside on the frequency bands corresponding to the two cards in the target DSDA combination.

In this step, the terminal device determines the target DSDA combination from at least one DSDA combination, and adjusts the frequency bands of card 1 and card 2 according to the target DSDA combination, that is, neither card 1 nor card 2 resides in the current frequency band. Instead, the frequency band is reselected to reside. Card 1 and Card 2 respectively reside in the frequency bands corresponding to the two cards in the target DSDA combination. It should be understood that the frequency bands corresponding to the two cards in the target DSDA combination are the frequency band ultimately used for card 1 to reside determined from the initial candidate frequency band of card 1 and the final frequency band determined from the initial candidate frequency band of card 2 due to card 2 Frequency band to stay in.

If at least one DSDA combination is a DSDA combination, the target DSDA combination is this unique DSDA combination. If at least one DSDA combination is multiple DSDA combinations, the target DSDA combination is a DSDA combination among the multiple DSDA combinations. The target DSDA combination can be any DSDA combination among the multiple DSDA combinations, or it can be based on The DSDA combination determined by the rules is not limited here.

In an embodiment where at least one DSDA combination includes multiple DSDA combinations, the DSDA combination with the highest priority among the multiple DSDA combinations may be determined as the target DSDA combination.

In some embodiments, the DSDA combination with the highest priority is the combination with the best dual-SIM mode capability among the multiple DSDA combinations.

This embodiment is to define the DSDA combination priority from the capability of dual-SIM mode. The better the capability of the dual-SIM mode, the higher the priority of the DSDA combination. On the contrary, the worse the capability of the dual-SIM mode, the lower the priority of the DSDA combination. The capabilities of the dual-card mode from high to low are: DSDA transmitter exclusive > DSDA transmitter shared > DR-DSDS > DSDS. Then, the priority of the DSDA combination from high to low can be: DSDA transmitter exclusive > DSDA transmitter shared > DR -DSDS>DSDS.

Figure 6 is a schematic flow chart of a dual-card communication method 600 provided by an embodiment of the present application. Similar to the above method embodiments, for convenience of description, method 600 will be described in detail by taking a terminal device as an example.

The embodiment shown in method 600 is a process of cell handover (handover) after the terminal device has camped in a cell. Cell handover refers to the channel switching required to maintain normal communication for users when the terminal equipment moves from one cell to another. When the quality of the neighboring cell meets certain conditions, the terminal device can switch from the current serving cell to a neighboring cell that meets the requirements.

During the cell switching process in this embodiment of the present application, the relevant design is used to ensure that the frequency band where one card resides after switching cells and the frequency band where another card currently resides can form a DSDA mode. In method 600, the network of the cell where the two cards currently reside is defaulted, and the frequency band where one card resides is adjusted so that a DSDA mode is formed between the two cards.

In S610, the terminal device determines that card 1 and card 2 have completed parking the frequency band, and no DSDA mode has been formed between card 1 and card 2.

In S620, the network device sends neighbor cell measurement configuration information to the terminal device, which is used to configure neighbor cell measurement of one of card 1 and card 2. Among them, one of the cards is in the connected state.

In this step, the network device sends neighboring cell measurement configuration information to the terminal device, and the terminal device can measure the neighboring cell, so that after the frequency band of the neighboring cell meets certain conditions, one of the cards can switch to the neighboring cell to achieve The purpose of adjusting the frequency band of one of the cards is to form a DSDA mode with the other card, which is a card other than one of Card 1 and Card 2.

It should be understood that in this step, the other card still resides in the current frequency band of the cell and does not adjust the frequency band of the other card. It only attempts to switch one of the cards to a neighboring cell that meets the conditions to adjust one of the cards. The purpose of the card's frequency band.

Generally, the main card is always in a connected state, so in an example, one of the cards may be the main card. In addition, when Card 1 is the main card, one of the cards is Card 1, and when Card 2 is the main card, one of the cards is Card 2. In another example, the secondary card is sometimes in a connected state (for example, the secondary card performs call services), so one of the cards can also be the secondary card.

In some embodiments, the neighbor cell measurement configuration information includes: multiple cell identifiers of multiple neighbor cells, one neighbor cell corresponding to one cell identifier; event information used to indicate events for cell switching corresponding to each neighbor cell.

The event used for cell handover corresponding to each neighboring cell may be any of the following events: A3 event, A4 event, B1 event or B2 event. The A3 event represents an event in which the quality of a neighboring cell in the same system and frequency as the serving cell is higher than the quality of the serving cell. The A4 event indicates an event in which the quality of the neighboring cell in the same system and different frequency as the serving cell is higher than a threshold. The B1 event represents an event in which the quality of a neighboring cell in a different system from the serving cell is higher than a threshold. The B2 event represents an event in which the quality of the neighboring cell in a different system from the serving cell is higher than one threshold and the quality of the serving cell is lower than another threshold. Generally, reference signal receiving power (RSRP) is used to represent the quality of neighboring cells. RSRP is a key parameter of wireless signal strength and is all resource elements (resource elements, RE) that carry reference signals within a certain symbol. ) is the average value of the received signal power.

It should be noted that when the network device configures neighbor cell measurement, each neighbor cell corresponds to an event. The events corresponding to different neighbor cells can be the same or different, depending on the relationship between the serving cell and the neighbor cell. For example, if a neighboring cell is a cell with the same system and frequency as the serving cell, the network device configures the A3 event for the neighboring cell. If a neighboring cell is a cell of the same system and different frequency of the serving cell, the network device configures the A4 event for the neighboring cell.

In other embodiments, the neighboring cell measurement configuration information may also include: a measurement report identifier of the measurement report corresponding to each neighboring cell. When a certain neighboring cell meets the handover requirements, a measurement report can be reported to the network device according to the corresponding measurement report identifier.

In S630, the terminal device determines the first candidate frequency band of one of Card 1 and Card 2 that meets the preset condition.

In this step, the terminal device measures multiple neighboring cells according to the neighboring cell measurement configuration information, and determines whether there is a first candidate frequency band for one of card 1 and card 2 that meets the preset conditions in the multiple neighboring cells. If it exists, continue to execute S640; if it does not exist, the process ends.

In some embodiments, the preset conditions are: the neighboring cell meets the events for cell switching, and the frequency band of the neighboring cell can form a DSDA mode with the frequency band where another card currently resides. For events used for cell handover, please refer to the relevant description above and will not be described again.

Exemplarily, in implementation, the terminal device measures multiple neighboring cells according to the neighboring cell measurement configuration information, and obtains To the RSRP value of each neighboring cell, according to the RSRP value of each neighboring cell, first determine at least one neighboring cell whose RSRP value satisfies the event used for cell handover. One neighboring cell corresponds to one frequency band (or one neighboring cell has one frequency band), and then At least one frequency band corresponding to the at least one neighboring cell is called an initial candidate frequency band. The terminal device then determines the first candidate from the initial candidate frequency bands that can form a DSDA mode with the frequency band where another card currently resides based on the DSDA mode information of the terminal device. frequency band. For a specific description of the DSDA mode information of the terminal device, please refer to the relevant description above and will not be described again.

It should be understood that the frequency bands in the first candidate frequency bands are part or all of the initial candidate frequency bands. If all the frequency bands in the initial candidate frequency band can form a DSDA mode supported by the terminal device with the frequency band currently occupied by another card, the frequency band of the first candidate frequency band is all the frequency bands of the initial candidate frequency band; if some of the frequency bands in the initial candidate frequency band If it can form a DSDA mode supported by the terminal device with the frequency band currently occupied by another card, then the first candidate frequency band is part of the initial candidate frequency band.

It should be noted that each frequency band in the first candidate frequency band and the frequency band currently occupied by another card can form a DSDA combination supported by the terminal device. For example, the first candidate frequency band includes N frequency bands, which means that the first candidate frequency band N frequency bands in the frequency band and the frequency band where another card currently resides can form N DSDA combinations supported by the terminal device.

In S640, the terminal device determines the target frequency band from the first candidate frequency band.

If the first candidate frequency band includes one frequency band, this unique frequency band is determined as the target frequency band.

If the first candidate frequency band includes multiple frequency bands, then a certain frequency band among the multiple frequency bands is determined as the target frequency band. The target frequency band can be any one of the multiple frequency bands, or it can be a certain frequency band determined according to the rules. Frequency band, there is no limitation here.

In some embodiments, the frequency band with the highest priority is the frequency band with the best dual-card mode capability in the DSDA mode formed by the first candidate frequency band and the frequency band where another card currently resides. That is to say, the frequency band with the best dual-card mode capability among the DSDA modes formed by the first candidate frequency band and the frequency band where another card currently resides is the target frequency band.

It should be noted that the priority of the frequency bands in the above-mentioned first candidate frequency band can be used alone or in combination.

For the specific description of determining the target frequency band from the first candidate frequency band, reference may be made to the relevant description above, and no further description will be given.

In S650, the terminal device sends a measurement report to the network device, where the measurement report is used to indicate the target frequency band.

In this step, the terminal device generates a measurement report indicating the target frequency band and sends it to the network device.

It should be understood that the measurement report may indicate the target frequency band implicitly or explicitly indicate the target frequency band, and this embodiment of the present application does not impose any limitation.

In one example, the measurement report may implicitly indicate the target frequency band. Implicit indication means that the target frequency band will not be directly read through the measurement report, but the target frequency band can be obtained by combining the read content with other information. For example, in implementation, the neighboring cell measurement configuration information may include the measurement report identification corresponding to each neighboring cell. When a certain neighboring cell meets the handover requirements, the measurement report may be reported to the network device according to the corresponding measurement report identification. right For the neighboring cell with the target frequency band (denoted as neighboring cell 1), when the handover requirements are met, a measurement report (denoted as measurement report 1) is reported to the network device according to the measurement report identifier corresponding to neighboring cell 1. In the measurement report 1 The target frequency band is not included. However, the network device can determine that the cell corresponding to measurement report 1 is neighboring cell 1 based on the measurement report identifier of measurement report 1, and naturally determines the target frequency band corresponding to neighboring cell 1.

In S660, the network device sends a switching instruction to instruct the frequency band where one of the cards resides to be switched to the target frequency band.

In S670, the terminal device switches one of card 1 and card 2 to the target frequency band.

In this step, the terminal device switches one of the cards 1 and 2 from the current frequency band to the target frequency band based on the switching instruction sent by the network device, thereby realizing the adjustment of the frequency band of one of the cards. In this way, a DSDA mode is formed between card 1 and card 2, which improves user experience.

It should be understood that the size of the sequence numbers of the steps in the above method 600 does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. For example, the order of S620 and S610 can be reversed.

It should be noted that in the embodiments of each method above, descriptions of initial candidate frequency band, first candidate frequency band, target frequency band, preset conditions, etc. are used. The specific meaning of each term in the embodiments of different methods is slightly different. , subject to the meaning of specific scenarios in each method. For example, in method 300, the initial candidate frequency band and the first candidate frequency band are the initial candidate frequency band and the first candidate frequency band for card 2, and in method 400, the initial candidate frequency band and the first candidate frequency band are both the initial candidate frequency band for card 1 and the first candidate frequency band, which may also be the initial candidate frequency band and the first candidate frequency band for card 2. In method 600, the initial candidate frequency band and the first candidate frequency band are the initial candidate frequency bands for one of card 1 and card 2. and the first candidate frequency band.

Figure 7 is a schematic flow chart of a dual-card communication method 700 provided by an embodiment of the present application. The method 700 can be executed by a terminal device that supports dual-SIM communication, or by a chip in the terminal device. The embodiments of this application do not impose any limitations. For ease of description, method 700 will be described in detail by taking a terminal device as an example.

It should be understood that in method 700, the first card is a card whose frequency band needs to be adjusted or to be parked, and the second card is a card that has completed the frequency band parking and does not adjust the frequency band. The first card can be one of the main card and the secondary card, and the second card can be the other card of the main card and the secondary card. For example, the first card is the secondary card and the second card is the primary card to reduce the impact of frequency band adjustment on the primary card's services.

In S710, when the dual-card dual-pass DSDA mode is not formed between the first card and the second card of the terminal device, the terminal device determines the first candidate frequency band of the first card that meets the preset conditions. The frequency band includes one or more frequency bands. The preset condition includes a first condition and a second condition. The first condition includes: the quality of the candidate cell meets the requirements. The second condition includes: the frequency band of the candidate cell can communicate with the second card. The frequency band currently camped on forms the DSDA mode supported by the terminal equipment, and one candidate cell corresponds to one frequency band.

In this step, the terminal device will first determine whether the DSDA mode is formed between the first card and the second card. If the DSDA mode is not formed, the frequency band currently occupied by the second card will be retained, and the multiple candidates of the first card will be The cell performs measurements. One candidate cell corresponds to one frequency band. Based on all the frequency bands corresponding to the plurality of candidate cells, the first candidate frequency band of the first card that meets the preset conditions is determined to try to adjust the frequency band of the first card so that the first DSDA mode is formed between the card and the second card.

In implementation, in some embodiments, the process for the terminal device to determine the first candidate frequency band of the first card that meets the preset conditions may be as follows:

The terminal device determines an initial candidate frequency band of the first card that satisfies the first condition, and the initial candidate frequency band includes one or more frequency bands;

The terminal device determines the first candidate frequency band that satisfies the second condition from the initial candidate frequency bands.

For example, the terminal device measures multiple candidate cells of the first card, first determines at least one candidate cell that meets the first condition (that is, the quality of the candidate cell meets the requirements), one candidate cell corresponds to one frequency band, and the at least one candidate cell is At least one frequency band corresponding to a candidate cell is called an initial candidate frequency band. The terminal device then determines from the initial candidate frequency bands according to the DSDA mode information of the terminal device that satisfies the second condition (that is, the frequency band of the candidate cell can be compatible with the second card currently camped on). The frequency band forms the first candidate frequency band for the DSDA mode supported by the terminal device).

It should be understood that the frequency bands in the first candidate frequency bands are part or all of the initial candidate frequency bands. If all the frequency bands in the initial candidate frequency band can form the DSDA mode supported by the terminal device with the frequency band where the second card currently resides, the frequency band of the first candidate frequency band is all the frequency bands of the initial candidate frequency band; if some of the frequency bands in the initial candidate frequency band If it can form a DSDA mode supported by the terminal device with the frequency band currently occupied by the second card, then the first candidate frequency band is part of the initial candidate frequency band.

It should be noted that each frequency band in the first candidate frequency band and the frequency band currently occupied by the second card can form a DSDA combination supported by the terminal device. For example, the first candidate frequency band includes N frequency bands, which means that the first candidate frequency band The N frequency bands in the frequency band and the frequency band where the second card currently resides can form N DSDA combinations supported by the terminal device.

It should be understood that the DSDA combinations supported by the same terminal device are fixed, and the DSDA combinations supported by different terminal devices may be the same or different. The details may be determined based on the model or hardware information of the terminal device. For specific description, please refer to the relevant description above and will not be described again.

In S720, the terminal device camps the first card on the target frequency band according to the target frequency band in the first candidate frequency band.

The dual-card communication method provided by the embodiment of the present application retains the frequency band currently occupied by the second card, and determines the first candidate frequency band of the first card based on preset conditions. The obtained first candidate frequency band can not only meet the quality requirements but also be compatible with The frequency band where the second card currently resides forms a DSDA mode, and then a frequency band is selected from the first candidate frequency band as the target frequency band, prompting the first card to reside on the target frequency band, which can form a DSDA mode between the first card and the second card , thereby enabling the terminal device to be in DSDA mode, improving user experience. In addition, since the embodiment of the present application retains the frequency band where the second card currently resides and only interferes with the frequency band where the first card needs to reside, compared with the method of adjusting the frequency bands of both cards, the embodiment of the present application is easier Realize, and reduce to a certain extent the impact on users of service interruptions that may be caused by adjusting the frequency band.

In an embodiment in which the first candidate frequency band includes multiple frequency bands, before the first card is camped on the target frequency band according to the target frequency band in the first candidate frequency band, the method 700 further includes: the terminal device sets the target frequency band. The frequency band with the highest priority among the first candidate frequency bands is determined as the target frequency band.

In some embodiments, the frequency band with the highest priority is the frequency band with the best dual-card mode capability in the DSDA mode formed by the first candidate frequency band and the frequency band where the second card currently resides. That is to say, the frequency band with the best dual-card mode capability in the DSDA mode formed by the first candidate frequency band and the frequency band where the second card currently resides is the target frequency band.

This embodiment defines the priority of the frequency band in the first candidate frequency band based on the capability of the dual-card mode. For specific description, please refer to the relevant description of the priority of the frequency band in the first candidate frequency band of card 2 in S330 above, which will not be described again. , just replace card 2 above with the first card here and card 1 above with the second card here.

In other embodiments, the frequency band with the highest priority is the frequency band with the strongest signal in the first candidate frequency band. That is to say, the frequency band with the strongest signal among the first candidate frequency bands is the target frequency band.

In this embodiment, the priority of the frequency band in the first candidate frequency band is defined based on the signal strength of the frequency band. For specific description, please refer to the relevant description of the priority of the frequency band in the first candidate frequency band of card 2 in S330 above. No further details will be given. Replace the above card 2 with the first card here and replace the above card 1. Just the second card here.

It should be noted that the priority of the frequency band in the first candidate frequency band of the first card defined above can be used alone or in combination. For specific description, please refer to the relevant description in S330 above, which will not be described again.

In this embodiment of the present application, the preset condition is a judgment condition used to determine the first candidate frequency band of the first card. The first condition in the preset condition is related to the quality of the candidate cell, including: the quality of the candidate cell meets the requirements. When the terminal device is in different scenarios, the specific content of the first condition is different, and the implementation process in the corresponding scenario is also different.

In the scenario where the terminal equipment is powered on and selected for a cell, the first condition includes: the quality of the candidate cell satisfies the S criterion. For specific description of the S criterion, please refer to the relevant description in the method 300 above, and will not be described again.

In an embodiment of this scenario, the quality of the candidate cell may be represented by the received power Srxlev of the candidate cell and the signal quality Squal of the received signal.

In combination with the above, in the scenario where the terminal device is powered on and selects a cell, the implementation process of the embodiment of the present application can correspond to the implementation process of method 300 above. The first card may be card 2 in the above method 300, and the second card may be card 1 in the above method 300. The first candidate frequency band of the first card may be the first candidate frequency band of card 2 in the method 300. Determine the first For a detailed description of the first candidate frequency band of the card and the process of determining the target frequency band, please refer to the relevant description above and will not be described again.

It should be understood that in the scenario where the terminal device is powered on and selects a cell, the second card has completed parking on the frequency band, and the first card has not yet completed parking on the frequency band.

In the scenario where the terminal equipment performs cell reselection, the first condition includes: the quality of the candidate cell satisfies the S criterion and R guidelines. For specific descriptions of the S criterion and the R criterion, please refer to the relevant description of the method 400 above, and will not be described again.

In the embodiment of this scenario, the quality of the candidate cell may be represented by the received power Srxlev of the candidate cell, the signal quality Squal and RSRP of the received signal. It should be noted that the candidate cell here is a neighboring cell of the serving cell where the first card is camped.

In combination with the above, in the scenario where the terminal device performs cell reselection, the implementation process of the embodiment of the present application may correspond to the implementation process of the above method 400.

In the first case, the first card can be card 1 in the above method 400, the second card can be the card 2 in the above method 400, and the first candidate frequency band of the first card can be the card 1 in the method 400. The first candidate frequency band, the preset frequency band in this case is the preset frequency band 1 in S440, the target frequency band in this case is the target frequency band 1 in S450, the process of determining the first candidate frequency band of the first card and determining the target frequency band For detailed description, please refer to the relevant descriptions of S430 to S450, and will not be described again.

In the second case, the first card can be card 2 in the above method 400, the second card can be the card 1 in the above method 400, and the first candidate frequency band of the first card can be the card 2 in the method 400. The first candidate frequency band, the preset frequency band in this case is the preset frequency band 2 in S470, the target frequency band in this case is the target frequency band 2 in S480, the process of determining the first candidate frequency band of the first card and determining the target frequency band For detailed description, please refer to the relevant descriptions from S460 to S480, and will not be described again.

In the scenario where the terminal device performs cell switching, the first condition includes: the quality of the candidate cell satisfies the event used for cell switching, and the event used for cell switching includes any one of A3 event, A4 event, B1 event or B2 event. For specific descriptions of the A3 event, the A4 event, the B1 event and the B2 event, please refer to the relevant descriptions in the method 600 above, and will not be described again.

In an embodiment of this scenario, the quality of the candidate cell may be represented by RSRP. It should be noted that the candidate cell here is a neighboring cell of the serving cell where the first card is camped.

In combination with the above, in the scenario where the terminal device performs cell switching, the implementation process of the embodiment of the present application may correspond to the implementation process of the above method 600. The first card can be one of card 1 and card 2 in the above method 600, and the second card can be the other card in the above method 600. The first candidate frequency band of the first card It may be the first candidate frequency band of one of the cards in the method 600. For a detailed description of the process of determining the first candidate frequency band of the first card and determining the target frequency band, please refer to the relevant description above and will not be described again.

In the scenario where the terminal device performs cell switching, in some embodiments, before parking the first card on the target frequency band according to the target frequency band in the first candidate frequency band, method 700 further includes:

The terminal device sends a measurement report indicating the target frequency band to the network device;

Receive a switching instruction from the network device, where the switching instruction is used to instruct the terminal device to store the first card. The frequency band is switched to the target frequency band.

For a detailed description of this step, please refer to the relevant description of S650 and S660 in method 600, which will not be described again.

In the scenario where the terminal equipment performs cell reselection and cell switching, both the first card and the second card have completed the frequency band parking. However, since the DSDA mode is not formed between the two cards, the frequency band of the first card needs to be adjusted. Therefore, in these two scenarios, the first card is camped on the target frequency band according to the target frequency band in the first candidate frequency band, including:

Figure 8 is a schematic flow chart of a dual-card communication method 800 provided by an embodiment of the present application. The method 800 can be executed by a terminal device that supports dual-SIM communication or by a chip in the terminal device. The embodiments of this application do not impose any limitations. For ease of description, method 800 will be described in detail by taking a terminal device as an example.

Method 800 describes that when the terminal device performs cell reselection, it adjusts the frequency bands of the first card and the second card so that a DSDA mode is formed between the first card and the second card, which can correspond to the above method 500. The first card can be one of the main card and the secondary card, and the second card can be the other card of the main card and the secondary card.

In S810, when the dual-card dual-pass DSDA mode is not formed between the first card and the second card of the terminal device, the terminal device determines the candidate frequency band of the first card that satisfies the first preset condition and the candidate frequency band that satisfies the second preset condition. Assuming that the candidate frequency band of the second card is conditional, the candidate frequency band of the first card includes at least one frequency band, the candidate frequency band of the second card includes at least one frequency band, and the first preset condition includes: for the candidate of the first card The cell satisfies the S criterion and the R criterion. The second preset condition includes: the candidate cell for the second card satisfies the S criterion and the R criterion, and one candidate cell corresponds to one frequency band.

It should be understood that the candidate cell of the first card is a neighboring cell of the serving cell where the first card is camped, and the candidate cell of the second card is a neighboring cell of the serving cell where the second card is camped.

In this step, the terminal device will first determine whether a DSDA mode is formed between the first card and the second card. If the DSDA mode is not formed, the terminal device will separately compare multiple candidate cells of the first card and multiple candidates of the second card. Cells are measured. One candidate cell corresponds to one frequency band. Based on all the frequency bands corresponding to multiple candidate cells of the first card, the candidate frequency band of the first card that meets the first preset condition is determined. According to the multiple candidate cells of the second card, the candidate frequency band is determined. All frequency bands determine candidate frequency bands of the second card that meet the second preset condition.

The specific implementation process of this step is similar to S540 in the above method 500. For specific description, please refer to the relevant description above and will not be described again. Among them, the candidate frequency band of the first card here corresponds to the initial candidate frequency band of card 1 in the above method 500, and the candidate frequency band of the second card here corresponds to the initial candidate frequency band of card 2 in the above method 500. The following is about the two. The explanation of the relationship is the same as here and will not be repeated.

In S820, the terminal device determines from the candidate frequency band of the first card and the candidate frequency band of the second card that the terminal device supports at least one DSDA combination that can form a DSDA mode, and each DSDA combination includes the first card's candidate frequency band. One of the candidate frequency bands and one of the candidate frequency bands of the second card.

In this step, the terminal device may determine, based on the DSDA mode information of the terminal device, whether at least one DSDA combination supported by the terminal device can be formed between the candidate frequency band of the first card and the candidate frequency band of the second card. If the candidate frequency bands of the two cards can form at least one DSDA combination supported by the terminal device, which means that the dual cards have the opportunity to form a DSDA mode, then execute SS830; if the candidate frequency bands of the two cards cannot form at least one DSDA combination supported by the terminal device. A DSDA combination ends the process.

The specific implementation process of this step is similar to S550 in method 800 above. For specific description, please refer to the relevant description above and will not be described again.

In S830, the terminal device determines the first card based on the target DSDA combination in the at least one DSDA combination. The frequency bands of the first card and the second card are adjusted so that the first card and the second card respectively reside on the frequency bands corresponding to the two cards in the target DSDA combination.

In this step, the terminal device determines the target DSDA combination from at least one DSDA combination, and adjusts the frequency band of the first card and the first card according to the target DSDA combination, that is, the first card and the first card are no longer resident. In the current frequency band, the frequency band is reselected to reside. The first card and the first card respectively reside in the frequency bands corresponding to the two cards in the target DSDA combination. It should be understood that the frequency bands corresponding to the two cards in the target DSDA combination are the frequency bands ultimately used for the first card to reside determined from the candidate frequency bands of the first card and the final frequency bands determined from the candidate frequency bands of the second card due to the third card. The frequency band where the second card resides.

In some embodiments, the at least one DSDA combination includes a plurality of DSDA combinations; and, before adjusting the frequency bands of the first card and the second card according to the target DSDA combination in the at least one DSDA combination, Method 800 also includes:

The DSDA combination with the highest priority among the multiple DSDA combinations is determined as the target DSDA combination.

For example, the DSDA combination with the highest priority is the combination with the best dual-SIM mode capability among the multiple DSDA combinations.

It should be noted again that the sequence numbers of the steps in the above method embodiments do not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the implementation of the embodiments of the present application. The implementation process constitutes any limitations.

The dual-card communication method provided by the embodiment of the present application is described in detail above with reference to FIGS. 1 to 8 . Next, the terminal device provided according to the embodiment of the present application will be described in detail with reference to FIGS. 9 to 10 .

Figure 9 is an exemplary block diagram of a terminal device 900 provided by an embodiment of the present application. The terminal device 900 includes a processing unit 910 .

In a possible implementation, the terminal device 900 is used to execute various processes and steps corresponding to the terminal device in the above method 700.

The processing unit 910 is configured to determine the first candidate frequency band of the first card that meets the preset conditions when the dual-card dual-pass DSDA mode is not formed between the first card and the second card of the terminal device, so The first candidate frequency band includes at least one frequency band, and the preset condition includes a first condition and a second condition. The first condition includes: the quality of the candidate cell meets the requirements, and the second condition includes: the frequency band of the candidate cell can The frequency band currently camped by the second card forms the DSDA mode supported by the terminal device, and one candidate cell corresponds to one frequency band;

The processing unit 910 is further configured to park the first card on the target frequency band according to the target frequency band in the first candidate frequency band.

It should be understood that the processing unit 910 may be used to perform various steps performed by the terminal device in the method 700. For specific descriptions, reference may be made to the relevant descriptions above, which will not be described again.

In another possible implementation, the terminal device 900 is used to execute various processes and steps corresponding to the terminal device in the above method 800.

The processing unit 910 is configured to determine the candidate frequency band of the first card that satisfies the first preset condition and the candidate frequency band of the first card that satisfies the first preset condition when the dual-card dual-pass DSDA mode is not formed between the first card and the second card of the terminal device. The candidate frequency band of the second card according to the second preset condition, the candidate frequency band of the first card includes at least one frequency band, the candidate frequency band of the second card includes at least one frequency band, and the first preset condition includes: The candidate cell for the first card satisfies the S criterion and the R criterion, and the second preset condition includes: the candidate cell for the second card satisfies the S criterion and the R criterion, and one candidate cell corresponds to one frequency band;

The processing unit 910 is further configured to determine, from the candidate frequency band of the first card and the candidate frequency band of the second card, at least one DSDA combination supported by the terminal device that can form a DSDA mode, and each DSDA combination includes the One frequency band among the candidate frequency bands of the first card and one frequency band among the candidate frequency bands of the second card;

The processing unit 910 is also configured to adjust the frequency bands of the first card and the second card according to the target DSDA combination in the at least one DSDA combination, so that the first card and the second card respectively reside on the frequency bands corresponding to the two cards in the target DSDA combination.

It should be understood that the processing unit 910 can be used to perform various steps performed by the terminal device in the method 800. For specific descriptions, reference can be made to the relevant descriptions above, which will not be described again.

It should be understood that the terminal device 900 here is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor, or a group of processors) used to execute one or more software or firmware programs. processor, etc.) and memory, merged logic circuitry, and/or other suitable components to support the described functionality.

In this embodiment of the present application, the terminal device in Figure 9 may also be a chip or a chip system, such as a system on chip (SoC).

Figure 10 is a schematic structural diagram of a terminal device 1000 provided by an embodiment of the present application. Terminal equipment 1000 is used to execute Execute the corresponding steps and/or processes in the above method embodiments.

The terminal device 1000 includes a processor 1010, a transceiver 1020, and a memory 1030. Among them, the processor 1010, the transceiver 1020 and the memory 1030 communicate with each other through internal connection paths. The processor 1010 can implement the functions of the processor 1010 in various possible implementations in the terminal device 1000. The memory 1030 is used to store instructions, and the processor 1010 is used to execute the instructions stored in the memory 1030. In other words, the processor 1010 can call these stored instructions to implement the functions of the processor 1010 in the terminal device 1000.

Optionally, the memory 1030 may include read-only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1010 may be used to execute instructions stored in the memory, and when the processor 1010 executes the instructions stored in the memory, the processor 1010 is used to execute each step of the above method embodiment corresponding to the terminal device and/or process.

In a possible implementation, the terminal device 1000 is configured to execute various processes and steps corresponding to the terminal device in the above method 700.

Processor 1010 is used to perform the following steps:

It should be understood that the specific process of each device performing corresponding steps in each of the above methods has been described in detail in the above method embodiments, and will not be described again here for the sake of brevity.

It should be understood that in the embodiment of the present application, the processor of the above device may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), Application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

During the implementation process, each step of the above method can be completed by instructions in the form of hardware integrated logic circuits or software in the processor. The steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor for execution, or can be executed by a combination of hardware and software units in the processor. The software unit can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory, and the processor executes the instructions in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

Embodiments of the present application provide a computer program product. When the computer program product is run on a terminal device, it causes the terminal device to execute the technical solutions in the above embodiments. The implementation principles and technical effects are similar to the above-mentioned method-related embodiments, and will not be described again here.

Embodiments of the present application provide a readable storage medium. The readable storage medium contains instructions. When the instructions are run on a terminal device, the terminal device executes the technical solutions of the above embodiments. The implementation principles and technical effects are similar and will not be described again here.

Embodiments of the present application provide a chip. The chip is used to execute instructions. When the chip is running, the technical solutions in the above embodiments are executed. The implementation principles and technical effects are similar and will not be described again here.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.

It will be understood that reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Therefore, various embodiments are not necessarily referred to the same embodiment throughout this specification. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

It should also be understood that in this application, "when", "if" and "if" all mean that the UE or the base station will perform corresponding processing under certain objective circumstances. It does not limit the time and does not require the UE to Or the base station must have judgment actions when implementing it, and it does not mean that there are other restrictions.

Persons of ordinary skill in the art can understand that the first, second, and other numerical numbers involved in this application are only for convenience of description and are not used to limit the scope of the embodiments of this application and also indicate the order.

Elements referred to in the singular in this application are intended to mean "one or more" and not "one and only one" unless otherwise specified. In this application, unless otherwise specified, "at least one" is intended to mean "one or more", and "plurality" is intended to mean "two or more".

The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. In the three cases B, A can be singular or plural, and B can be singular or plural.

The term "at least one of..." or "at least one of..." herein refers to all or any combination of the listed items, for example, "at least one of A, B and C", It can mean: A exists alone, B exists alone, C exists alone, A and B exist at the same time, B and C exist at the same time, A, B and C exist at the same time, among which A can be singular or plural, and B can be Singular or plural, C can be singular or plural.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

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

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

The same or similar parts between the various embodiments in this application can be referred to each other. In the various embodiments of this application and the various implementation methods/implementation methods/implementation methods in each embodiment, if there are no special instructions or logical conflicts, the differences between different embodiments and the various implementation methods/implementation methods in each embodiment will be different. The terminology and/or descriptions between implementation methods/implementation methods are consistent and can be referenced to each other. Different embodiments, as well as the technical features in each implementation method/implementation method/implementation method in each embodiment are based on their inherent Logical relationships can be combined to form new embodiments, implementations, implementation methods, or implementation methods. The above-described embodiments of the present application do not limit the scope of protection of the present application.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. In short, the above descriptions are only preferred embodiments of the technical solution of the present application and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims

A dual-card communication method, applied to terminal equipment, is characterized by including:

When the dual-card dual-pass DSDA mode is not formed between the first card and the second card of the terminal device, determine the first candidate frequency band of the first card that meets the preset conditions, and the first candidate frequency band includes At least one frequency band, the preset condition includes a first condition and a second condition. The first condition includes: the quality of the candidate cell meets the requirements. The second condition includes: the frequency band of the candidate cell can be compatible with the second card. The frequency band currently camped on forms the DSDA mode supported by the terminal equipment, and one candidate cell corresponds to one frequency band;

According to the target frequency band in the first candidate frequency band, the first card is camped on the target frequency band.
The method of claim 1, wherein the first candidate frequency band includes a plurality of frequency bands; and, based on the target frequency band in the first candidate frequency band, the first card resides in Before moving on the target frequency band, the method further includes:

The frequency band with the highest priority among the first candidate frequency bands is determined as the target frequency band.
The method according to claim 2, characterized in that the frequency band with the highest priority is the dual-card mode with the highest capability in the DSDA mode formed by the first candidate frequency band and the frequency band where the second card currently resides. Good band.
The method according to claim 2 or 3, characterized in that the frequency band with the highest priority is the frequency band with the strongest signal in the first candidate frequency band.
The method according to any one of claims 1 to 4, characterized in that, in a scenario where the terminal device performs cell selection at power-on, the first condition includes: the quality of the candidate cell satisfies the S criterion.
The method according to any one of claims 1 to 4, characterized in that, in the scenario where the terminal equipment performs cell reselection, the first condition includes: the quality of the candidate cell satisfies the S criterion and the R criterion.
The method according to any one of claims 1 to 4, characterized in that, in the scenario where the terminal device performs cell switching, the first condition includes: the quality of the candidate cell satisfies the event for cell switching, The event used for cell handover includes any one of A3 event, A4 event, B1 event or B2 event.
The method according to claim 7, characterized in that, before parking the first card on the target frequency band according to the target frequency band in the first candidate frequency band, the method further includes:

Send a measurement report indicating the target frequency band to the network device;

Receive a switching instruction from the network device, where the switching instruction is used to instruct the terminal device to switch the frequency band where the first card resides to the target frequency band.
The method according to any one of claims 6 to 8, characterized in that, based on the target frequency band in the first candidate frequency band, parking the first card on the target frequency band includes:

According to the target frequency band, the frequency band of the first card is adjusted so that the first card resides on the target frequency band.
The method according to any one of claims 1 to 9, characterized in that the first card is a secondary card and the second card is a primary card.
A terminal device, characterized by including:

Memory, used to store computer instructions;

A processor, configured to call computer instructions stored in the memory to execute the method according to any one of claims 1 to 10.
A computer-readable storage medium, characterized in that it is used to store computer instructions, the computer instructions For implementing the method according to any one of claims 1 to 10.
A computer program product, characterized by comprising computer instructions, the computer instructions being used to implement the method according to any one of claims 1 to 10.
A chip, characterized in that the chip includes:

Memory: used to store instructions;

A processor, configured to call and run the instructions from the memory, so that the communication device installed with the chip system executes the method according to any one of claims 1 to 10.