WO2022152167A1 - Procédé et dispositif de sélection de réseau - Google Patents

Procédé et dispositif de sélection de réseau Download PDF

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Publication number
WO2022152167A1
WO2022152167A1 PCT/CN2022/071603 CN2022071603W WO2022152167A1 WO 2022152167 A1 WO2022152167 A1 WO 2022152167A1 CN 2022071603 W CN2022071603 W CN 2022071603W WO 2022152167 A1 WO2022152167 A1 WO 2022152167A1
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WIPO (PCT)
Prior art keywords
plmn
terminal
hplmn
plmn list
network
Prior art date
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Ceased
Application number
PCT/CN2022/071603
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English (en)
Chinese (zh)
Inventor
张号
胡先专
代贝
胡浩
齐先婷
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2022152167A1 publication Critical patent/WO2022152167A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Definitions

  • the present invention relates to the technical field of wireless communication, and in particular, to a network selection method and an electronic device.
  • Emergency call is a special call service for users to dial numbers such as 110, 120, 911 and other numbers through the terminal when the user encounters emergency situations such as medical assistance and fire alarm, and the terminal is in flight mode.
  • the terminal When the user enables the emergency call function, the terminal first initiates an emergency call service request to the base station, and the base station side establishes an emergency call session according to the emergency number called by the terminal to complete the emergency call process.
  • the terminal When the user needs to use the emergency call function in the flight mode, the terminal needs to exit the flight mode in time, initiate a power-on search for the network, and initiate an emergency call after successfully staying on the network.
  • PLMN public land mobile networks
  • HPLMN home public land mobile network
  • HPLMN home public land mobile network
  • the terminal may select and register to a non-HPLMN. When the terminal initiates an emergency call request through a non-HPLMN, the emergency call will fail.
  • an embodiment of the present invention provides a network selection method, through which a terminal can preferentially choose to register with an optimal PLMN network, and initiate an emergency call request through the selected PLMN network, and the selected most The optimal PLMN network receives the emergency call request, and executes the emergency call task through the emergency call system of the network, which improves the success rate of the terminal emergency call.
  • an embodiment of the present application provides a network selection method, the method includes: acquiring an identity of a home public land mobile network (HPLMN); acquiring a list of public land mobile networks (PLMN), wherein the PLMN list The PLMNs are arranged in order, and the PLMN has an identifier; it is determined whether the PLMN list contains the HPLMN; when it is determined that the PLMN list contains the HPLMN, the HPLMN is selected.
  • the terminal can choose to register with the HPLMN, and when the terminal initiates an emergency call through the HPLMN, the success rate of the emergency call can be improved.
  • the method further includes: when it is determined that the PLMN list does not contain the HPLMN, determining whether the PLMN list contains an equivalent home land public mobile network (EHPLMN); when It is determined that the PLMN list contains the EHPLMN, and the EHPLMN is selected.
  • EHPLMN equivalent home land public mobile network
  • the method further includes: when it is determined that the PLMN list does not contain the EHPLMN, selecting the PLMN list according to the order of the PLMNs in the PLMN list in PLMN.
  • the determining whether the PLMN list includes the HPLMN includes: parsing the PLMN list to obtain the PLMN identifier; according to the PLMN list Whether the identity query of the PLMN contains the identity of the HPLMN; determine whether the PLMN list contains the HPLMN according to the query result.
  • the determining whether the PLMN list includes the EHPLMN includes: parsing the PLMN list to obtain the PLMN identifier; Whether the identity query of the PLMN contains the identity of the EHPLMN; determine whether the PLMN list contains the EHPLMN according to the query result.
  • the method further includes: before acquiring the identifier of the HPLMN, detecting an operation of the user enabling the emergency call function; after acquiring the identifier of the HPLMN and Between the steps of acquiring the PLMN list, the airplane mode is turned off.
  • the method is applied to a multi-operator shared network (MOCN).
  • MOCN multi-operator shared network
  • an embodiment of the present application provides a terminal, the terminal includes a touch screen, a memory, and a processor; wherein the memory stores one or more computer programs; the processor is configured to: obtain a home terrestrial public The identification of the mobile network (HPLMN); obtain a list of land public mobile networks (PLMN), wherein the PLMNs in the PLMN list are arranged in order, and the PLMN has an identification; determine whether the PLMN list contains HPLMN; when determining the The PLMN list contains the HPLMN, select the HPLMN.
  • HPLMN home terrestrial public The identification of the mobile network
  • PLMN land public mobile networks
  • the terminal can choose to register with the HPLMN, and when the terminal initiates an emergency call through the HPLMN, the success rate of the emergency call can be improved.
  • the processor is further configured to: when it is determined that the PLMN list does not contain the HPLMN, determine whether the PLMN list contains an equivalent home land public mobile network (EHPLMN). ); when it is determined that the PLMN list contains the EHPLMN, the EHPLMN is selected.
  • EHPLMN equivalent home land public mobile network
  • the processor is further configured to: when it is determined that the PLMN list does not contain the EHPLMN, select the EHPLMN according to the order of the PLMNs in the PLMN list. PLMN in the PLMN list described above.
  • the processor is further configured to: parse the PLMN list to obtain the identity of the PLMN; according to the identity of the PLMN in the PLMN list Query whether the identifier of the HPLMN is included; determine whether the PLMN list includes the HPLMN according to the query result.
  • the processor is further configured to: parse the PLMN list to obtain the identity of the PLMN; according to the identity of the PLMN in the PLMN list Query whether the identifier of the EHPLMN is included; determine whether the PLMN list includes the EHPLMN according to the query result.
  • the processor is further configured to: before acquiring the identifier of the HPLMN, detect an operation of the user enabling the emergency call function; and after acquiring the HPLMN Between the identifier of , and the step of obtaining the PLMN list, the airplane mode is turned off.
  • the terminal can select the optimal PLMN network when the user enables the emergency call function of the terminal, and the terminal can initiate an emergency call request through the selected HPLMN network or EHPLMN network, and the selected HPLMN network or EHPLMN network
  • the network performs the emergency calling task through the emergency calling system of the network, which improves the success rate of the emergency calling.
  • FIG. 1 is a schematic structural diagram of a device provided by an embodiment of the present application.
  • FIG. 2 is a block diagram of a software structure of a device provided by an embodiment of the present application.
  • 3A is a schematic diagram of an emergency call scenario
  • 3B is a schematic diagram of an emergency call scenario
  • FIG. 4 is a schematic flowchart of a network selection method provided by an embodiment of the present application.
  • FIG. 5 is a signaling interaction diagram of a network selection method provided by an embodiment of the present application.
  • references in this specification to "one embodiment” or “some embodiments” and the like mean that a particular feature, structure or characteristic described in connection with that embodiment is included in at least one embodiment of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically emphasized otherwise.
  • the terms “including”, “including”, “having” and their variants mean “including but not limited to” unless specifically emphasized otherwise.
  • the term “when” may be interpreted to mean “if” or “after” or “in response to determining" or “in response to detecting" depending on the context.
  • the phrases “in determining" or “if detecting (the stated condition or event)” can be interpreted to mean “if determining" or “in response to determining" or “on detecting (the stated condition or event)” or “in response to the detection of (the stated condition or event)”.
  • the terminal may be a wireless terminal.
  • a terminal may also be called an electronic device, subscriber unit, subscriber station, mobile station, mobile station, mobile device, remote station, remote terminal, access terminal, user terminal, communication device, user agent, user equipment, or user equipment (UE) .
  • a wireless terminal may be a cellular telephone, satellite telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, personal digital assistant (PDA), handheld device with wireless connectivity, computing device, or other processing device connected to a wireless modem.
  • SIP Session Initiation Protocol
  • PDA personal digital assistant
  • a base station may be used to communicate with wireless terminals, and may also be called an access point, Node B, or some other terminology.
  • the base station may be implemented as a radio base station of any suitable radio technology, eg BTS (Base Transceiver Station) of GSM (Global System for Mobile Communications), HSPA (High Speed Packet Access)/WCDMA (Wireless Code Division Multiple Access) network NodeB, or eNodeB of an LTE (Long Term Evolution) communication network.
  • BTS Base Transceiver Station
  • GSM Global System for Mobile Communications
  • HSPA High Speed Packet Access
  • WCDMA Wireless Code Division Multiple Access
  • NodeB Long Term Evolution
  • FIG. 1 shows a schematic structural diagram of a terminal 100 .
  • the terminal 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, sensor module 180, buttons 190, motor 191, indicator 192, camera 193, display screen 194, and user Identity module (subscriber identification module, SIM) card interface 195 and so on.
  • SIM subscriber identification module
  • the sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light. Sensor 180L, bone conduction sensor 180M, etc.
  • the structures illustrated in the embodiments of the present invention do not constitute a specific limitation on the terminal 100 .
  • the terminal 100 may include more or less components than shown, or some components may be combined, or some components may be separated, or different component arrangements.
  • the illustrated components may be implemented in hardware, software, or a combination of software and hardware.
  • the processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (neural-network processing unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.
  • application processor application processor, AP
  • modem processor graphics processor
  • ISP image signal processor
  • controller video codec
  • digital signal processor digital signal processor
  • baseband processor baseband processor
  • neural-network processing unit neural-network processing unit
  • the controller can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.
  • a memory may also be provided in the processor 110 for storing instructions and data.
  • the memory in processor 110 is cache memory. This memory may hold instructions or data that have just been used or recycled by the processor 110 . If the processor 110 needs to use the instruction or data again, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby increasing the efficiency of the system.
  • the processor 110 may include one or more interfaces.
  • the interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous transceiver (universal asynchronous transmitter) receiver/transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (SIM) interface, and / or universal serial bus (universal serial bus, USB) interface, etc.
  • I2C integrated circuit
  • I2S integrated circuit built-in audio
  • PCM pulse code modulation
  • PCM pulse code modulation
  • UART universal asynchronous transceiver
  • MIPI mobile industry processor interface
  • GPIO general-purpose input/output
  • SIM subscriber identity module
  • USB universal serial bus
  • the I2C interface is a bidirectional synchronous serial bus that includes a serial data line (SDA) and a serial clock line (SCL).
  • the processor 110 may contain multiple sets of I2C buses.
  • the processor 110 can be respectively coupled to the touch sensor 180K, the charger, the flash, the camera 193 and the like through different I2C bus interfaces.
  • the processor 110 may couple the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate with each other through the I2C bus interface, so as to realize the touch function of the terminal 100 .
  • the I2S interface can be used for audio communication.
  • the processor 110 may contain multiple sets of I2S buses.
  • the processor 110 may be coupled with the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170 .
  • the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface, so as to realize the function of answering calls through a Bluetooth headset.
  • the PCM interface can also be used for audio communications, sampling, quantizing and encoding analog signals.
  • the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface.
  • the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to realize the function of answering calls through the 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 may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication.
  • a UART interface is typically used to connect the processor 110 with the wireless communication module 160 .
  • the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to implement the Bluetooth function.
  • the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.
  • the MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193 .
  • MIPI interfaces include camera serial interface (CSI), display serial interface (DSI), etc.
  • the processor 110 communicates with the camera 193 through the CSI interface, so as to realize the shooting function of the terminal 100 .
  • the processor 110 communicates with the display screen 194 through the DSI interface to implement the display function of the terminal 100 .
  • the GPIO interface can be configured by software.
  • the GPIO interface can be configured as a control signal or as a data signal.
  • the GPIO interface may be used to connect the processor 110 with the camera 193, the display screen 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like.
  • the GPIO interface can also be configured as I2C interface, I2S interface, UART interface, MIPI interface, etc.
  • the USB interface 130 is an interface that conforms to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like.
  • the USB interface 130 can be used to connect a charger to charge the terminal 100, and can also be used to transmit data between the terminal 100 and peripheral devices. It can also be used to connect headphones to play audio through the headphones.
  • the interface can also be used to connect other electronic devices, such as AR devices.
  • the interface connection relationship between the modules illustrated in the embodiment of the present invention is only a schematic illustration, and does not constitute a structural limitation of the terminal 100 .
  • the terminal 100 may also adopt different interface connection manners in the foregoing embodiments, or a combination of multiple interface connection manners.
  • the charging management module 140 is used to receive charging input from the charger.
  • the charger may be a wireless charger or a wired charger.
  • the charging management module 140 may receive charging input from the wired charger through the USB interface 130 .
  • the charging management module 140 may receive wireless charging input through the wireless charging coil of the terminal 100 . While the charging management module 140 charges the battery 142 , it can also supply power to the electronic device through the power management module 141 .
  • the power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 .
  • the power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, the internal memory 121, the display screen 194, the camera 193, and the wireless communication module 160.
  • the power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle times, battery health status (leakage, impedance).
  • the power management module 141 may also be provided in the processor 110 .
  • the power management module 141 and the charging management module 140 may also be provided in the same device.
  • the wireless communication function of the terminal 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modulation and demodulation processor, the baseband processor, and the like.
  • Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in terminal 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization.
  • the antenna 1 can be multiplexed as a diversity antenna of the wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.
  • the mobile communication module 150 may provide a wireless communication solution including 2G/3G/4G/5G, etc. applied on the terminal 100 .
  • the mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA) and the like.
  • the mobile communication module 150 can receive electromagnetic waves from the antenna 1, filter and amplify the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation.
  • the mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and then convert it into electromagnetic waves for radiation through the antenna 1.
  • at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110 .
  • at least part of the functional modules of the mobile communication module 150 may be provided in the same device as at least part of the modules of the processor 110 .
  • the modem processor may include a modulator and a demodulator.
  • the modulator is used to modulate the low frequency baseband signal to be sent into a medium and high frequency signal.
  • the demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator transmits the demodulated low-frequency baseband signal to the baseband processor for processing.
  • the low frequency baseband signal is processed by the baseband processor and passed to the application processor.
  • the application processor outputs sound signals through audio devices (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or videos through the display screen 194 .
  • the modem processor may be a stand-alone device.
  • the modem processor may be independent of the processor 110, and may be provided in the same device as the mobile communication module 150 or other functional modules.
  • the wireless communication module 160 can provide applications on the terminal 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions.
  • WLAN wireless local area networks
  • BT wireless fidelity
  • GNSS global navigation satellite system
  • frequency modulation frequency modulation, FM
  • NFC near field communication technology
  • infrared technology infrared, IR
  • the wireless communication module 160 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 .
  • the wireless communication module 160 can also receive the signal to be sent from the processor 110 , perform frequency modulation on it, amplify it, and convert it into electromagnetic waves for
  • the antenna 1 of the terminal 100 is coupled with the mobile communication module 150, and the antenna 2 is coupled with the wireless communication module 160, so that the terminal 100 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 (WCDMA), Time Division Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE), BT, GNSS, WLAN, NFC , FM, and/or IR technology, etc.
  • the GNSS may include a global positioning system (global positioning system, GPS), a global navigation satellite system (GLONASS), a Beidou navigation satellite system (BDS), a quasi-zenith satellite system (quasi -zenith satellite system, QZSS) and/or satellite based augmentation systems (SBAS).
  • GPS global positioning system
  • GLONASS global navigation satellite system
  • BDS Beidou navigation satellite system
  • QZSS quasi-zenith satellite system
  • SBAS satellite based augmentation systems
  • the terminal 100 implements a display function through a GPU, a display screen 194, an application processor, and the like.
  • the GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor.
  • the GPU is used to perform mathematical and geometric calculations for graphics rendering.
  • Processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.
  • Display screen 194 is used to display images, videos, and the like.
  • Display screen 194 includes a display panel.
  • the display panel can be 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).
  • LED diode AMOLED
  • flexible light-emitting diode flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) and so on.
  • the terminal 100 may include 1 or N display screens 194 , where N is a positive integer greater than 1.
  • the terminal 100 can realize the shooting function through the ISP, the camera 193, the video codec, the GPU, the display screen 194 and the application processor.
  • the ISP is used to process the data fed back by the camera 193 .
  • the shutter is opened, the light is transmitted to the camera photosensitive element through the lens, the light signal is converted into an electrical signal, and the camera photosensitive element transmits 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 tone.
  • ISP can also optimize the exposure, color temperature and other parameters of the shooting scene.
  • the ISP may be provided in the camera 193 .
  • Camera 193 is used to capture still images or video.
  • the object is projected through the lens to generate an optical image onto the photosensitive element.
  • the photosensitive element may be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor.
  • CMOS complementary metal-oxide-semiconductor
  • the photosensitive element converts the optical signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal.
  • the ISP outputs the digital image signal to the DSP for processing.
  • DSP converts digital image signals into standard RGB, YUV and other formats of image signals.
  • the terminal 100 may include 1 or N cameras 193 , where N is a positive integer greater than 1.
  • a digital signal processor is used to process digital signals, in addition to processing digital image signals, it can also process other digital signals. For example, when the terminal 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the energy of the frequency point, and so on.
  • Video codecs are used to compress or decompress digital video.
  • Terminal 100 may support one or more video codecs.
  • the terminal 100 can play or record videos in various encoding formats, for example, moving picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, and so on.
  • MPEG moving picture experts group
  • the NPU is a neural-network (NN) computing processor.
  • NN neural-network
  • Applications such as intelligent cognition of the terminal 100 can be implemented through the NPU, such as image recognition, face recognition, speech recognition, text understanding, and the like.
  • the external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the terminal 100.
  • the external memory card communicates with the processor 110 through the external memory interface 120 to realize the data storage function. For example to save files like music, video etc in external memory card.
  • Internal memory 121 may be used to store computer executable program code, which includes instructions.
  • the internal memory 121 may include a storage program area and a storage data area.
  • the storage program area can store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), and the like.
  • the storage data area may store data (such as audio data, phone book, etc.) created during the use of the terminal 100 and the like.
  • the internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), and the like.
  • the processor 110 executes various functional applications and data processing of the terminal 100 by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.
  • the terminal 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playback, recording, etc.
  • Audio module 170 is used to convert digital audio information to analog audio signal output, and also to convert analog audio input to digital audio signal. Audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be provided in the processor 110 , or some functional modules of the audio module 170 may be provided in the processor 110 .
  • Speaker 170A also referred to as a "speaker" is used to convert audio electrical signals into sound signals.
  • the terminal 100 can listen to music through the speaker 170A, or listen to a hands-free call.
  • the receiver 170B also referred to as "earpiece" is used to convert audio electrical signals into sound signals.
  • the voice can be answered by placing the receiver 170B close to the human ear.
  • the microphone 170C also called “microphone” or “microphone” is used to convert sound signals into electrical signals.
  • the user can make a sound by approaching the microphone 170C through a human mouth, and input the sound signal into the microphone 170C.
  • the terminal 100 may be provided with at least one microphone 170C.
  • the terminal 100 may be provided with two microphones 170C, which can implement a noise reduction function in addition to collecting sound signals.
  • the terminal 100 may further be provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions.
  • the earphone jack 170D is used to connect wired earphones.
  • the earphone interface 170D can be the USB interface 130, or can be a 3.5mm open mobile terminal platform (OMTP) standard interface, a cellular telecommunications industry association of the USA (CTIA) standard interface.
  • OMTP open mobile terminal platform
  • CTIA cellular telecommunications industry association of the USA
  • the pressure sensor 180A is used to sense pressure signals, and can convert the pressure signals into electrical signals.
  • the pressure sensor 180A may be provided on the display screen 194 .
  • the capacitive pressure sensor may be comprised of at least two parallel plates of conductive material.
  • the terminal 100 determines the intensity of the pressure according to the change in capacitance.
  • the terminal 100 detects the intensity of the touch operation according to the pressure sensor 180A.
  • the terminal 100 may also calculate the touched position according to the detection signal of the pressure sensor 180A.
  • touch operations acting on the same touch position but with different touch operation intensities may correspond to different operation instructions.
  • the instruction for viewing the short message is executed.
  • the instruction to create a new short message is executed.
  • the gyro sensor 180B may be used to determine the motion attitude of the terminal 100 .
  • the angular velocity of terminal 100 about three axes ie, x, y, and z axes
  • the gyro sensor 180B can be used for image stabilization.
  • the gyroscope sensor 180B detects the angle at which the terminal 100 shakes, calculates the distance to be compensated by the lens module according to the angle, and allows the lens to counteract the shake of the terminal 100 through reverse motion to achieve anti-shake.
  • the gyro sensor 180B can also be used for navigation and somatosensory game scenarios.
  • the air pressure sensor 180C is used to measure air pressure.
  • the terminal 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist in positioning and navigation.
  • the magnetic sensor 180D includes a Hall sensor.
  • the terminal 100 can detect the opening and closing of the flip holster using the magnetic sensor 180D.
  • the terminal 100 can detect the opening and closing of the flip according to the magnetic sensor 180D. Further, according to the detected opening and closing state of the holster or the opening and closing state of the flip cover, features such as automatic unlocking of the flip cover are set.
  • the acceleration sensor 180E can detect the magnitude of the acceleration of the terminal 100 in various directions (generally three axes). When the terminal 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the posture of electronic devices, and can be used in applications such as horizontal and vertical screen switching, pedometers, etc.
  • the terminal 100 can measure the distance through infrared or laser. In some embodiments, when shooting a scene, the terminal 100 can use the distance sensor 180F to measure the distance to achieve fast focusing.
  • Proximity light sensor 180G may include, for example, light emitting diodes (LEDs) and light detectors, such as photodiodes.
  • the light emitting diodes may be infrared light emitting diodes.
  • the terminal 100 emits infrared light to the outside through light emitting diodes.
  • the terminal 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object near the terminal 100 . When insufficient reflected light is detected, the terminal 100 may determine that there is no object near the terminal 100 .
  • the terminal 100 can use the proximity light sensor 180G to detect that the user holds the terminal 100 close to the ear to talk, so as to automatically turn off the screen to save power.
  • Proximity light sensor 180G can also be used in holster mode, pocket mode automatically unlocks and locks the screen.
  • the ambient light sensor 180L is used to sense ambient light brightness.
  • the terminal 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness.
  • the ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures.
  • the ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the terminal 100 is in a pocket, so as to prevent accidental touch.
  • the fingerprint sensor 180H is used to collect fingerprints.
  • the terminal 100 can use the collected fingerprint characteristics to unlock the fingerprint, access the application lock, take a picture with the fingerprint, answer the incoming call with the fingerprint, and the like.
  • the temperature sensor 180J is used to detect the temperature.
  • the terminal 100 uses the temperature detected by the temperature sensor 180J to execute a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold value, the terminal 100 reduces the performance of the processor located near the temperature sensor 180J, so as to reduce power consumption and implement thermal protection.
  • the terminal 100 when the temperature is lower than another threshold, the terminal 100 heats the battery 142 to avoid abnormal shutdown of the terminal 100 due to low temperature.
  • the terminal 100 boosts the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.
  • Touch sensor 180K also called “touch device”.
  • the touch sensor 180K may be disposed on the display screen 194 , and the touch sensor 180K and the display screen 194 form a touch screen, also called a “touch screen”.
  • the touch sensor 180K is used to detect a touch operation on or near it.
  • the touch sensor can pass the detected touch operation to the application processor to determine the type of touch event.
  • Visual output related to touch operations may be provided through display screen 194 .
  • the touch sensor 180K may also be disposed on the surface of the terminal 100 , which is different from the position where the display screen 194 is located.
  • the bone conduction sensor 180M can acquire vibration signals.
  • the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human voice.
  • the bone conduction sensor 180M can also contact the pulse of the human body and receive the blood pressure beating signal.
  • the bone conduction sensor 180M can also be disposed in the earphone, combined with the bone conduction earphone.
  • the audio module 170 can analyze the voice signal based on the vibration signal of the vocal vibration bone block obtained by the bone conduction sensor 180M, so as to realize 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 180M, and realize the function of heart rate detection.
  • the keys 190 include a power-on key, a volume key, and the like. Keys 190 may be mechanical keys. It can also be a touch key.
  • the terminal 100 may receive key input and generate key signal input related to user settings and function control of the terminal 100.
  • Motor 191 can generate vibrating cues.
  • the motor 191 can be used for vibrating alerts for incoming calls, and can also be used for touch vibration feedback.
  • touch operations acting on different applications can correspond to different vibration feedback effects.
  • the motor 191 can also correspond to different vibration feedback effects for touch operations on different areas of the display screen 194 .
  • Different application scenarios for example: time reminder, receiving information, alarm clock, games, etc.
  • the touch vibration feedback effect can also support customization.
  • the indicator 192 can be an indicator light, which can be used to indicate the charging state, the change of the power, and can also be used to indicate a message, a missed call, a notification, and the like.
  • the SIM card interface 195 is used to connect a SIM card.
  • the SIM card can be contacted and separated from the terminal 100 by inserting into the SIM card interface 195 or pulling out from the SIM card interface 195 .
  • the terminal 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1.
  • the SIM card interface 195 can support Nano SIM card, Micro SIM card, SIM card and so on. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the plurality of cards may be the same or different.
  • the SIM card interface 195 can also be compatible with different types of SIM cards.
  • the SIM card interface 195 is also compatible with external memory cards.
  • the terminal 100 interacts with the network through the SIM card to realize functions such as calls and data communication.
  • the terminal 100 employs an eSIM, ie an embedded SIM card.
  • the eSIM card can be embedded in the terminal 100 and cannot be separated from the terminal 100 .
  • the software system of the terminal 100 may adopt a layered architecture, an event-driven architecture, a microkernel architecture, a microservice architecture, or a cloud architecture.
  • the embodiments of the present invention take an Android system with a layered architecture as an example to illustrate the software structure of the terminal 100 as an example.
  • FIG. 2 is a block diagram of a software structure of the terminal 100 according to an embodiment of the present invention.
  • the layered architecture divides the software into several layers, and each layer has a clear role and division of labor. Layers communicate with each other through software interfaces.
  • the Android system is divided into four layers, which are, from top to bottom, an application layer, an application framework layer, an Android runtime (Android runtime) and a system library, and a kernel layer.
  • the application layer can include a series of application packages.
  • the application package can include applications such as camera, gallery, calendar, call, map, navigation, WLAN, Bluetooth, music, video, short message and so on.
  • the application framework layer provides an application programming interface (application programming interface, API) and a programming framework for applications in the application layer.
  • the application framework layer includes some predefined functions.
  • the application framework layer may include window managers, content providers, view systems, telephony managers, resource managers, notification managers, and the like.
  • a window manager is used to manage window programs.
  • the window manager can get the size of the display screen, determine whether there is a status bar, lock the screen, take screenshots, etc.
  • Content providers are used to store and retrieve data and make these data accessible to applications.
  • the data may include video, images, audio, calls made and received, browsing history and bookmarks, phone book, etc.
  • the view system includes visual controls, such as controls for displaying text, controls for displaying pictures, and so on. View systems can be used to build applications.
  • a display interface can consist of one or more views.
  • the display interface including the short message notification icon may include a view for displaying text and a view for displaying pictures.
  • the telephony manager is used to provide the communication function of the terminal 100 .
  • the management of call status including connecting, hanging up, etc.).
  • the resource manager provides various resources for the application, such as localization strings, icons, pictures, layout files, video files and so on.
  • the notification manager enables applications to display notification information in the status bar, which can be used to convey notification-type messages, and can disappear automatically after a brief pause without user interaction. For example, the notification manager is used to notify download completion, message reminders, etc.
  • the notification manager can also display notifications in the status bar at the top of the system in the form of graphs or scroll bar text, such as notifications of applications running in the background, and notifications on the screen in the form of dialog windows. For example, text information is prompted in the status bar, a prompt sound is issued, the electronic device vibrates, and the indicator light flashes.
  • Android Runtime includes core libraries and a virtual machine. Android runtime is responsible for scheduling and management of the Android system.
  • the core library consists of two parts: one is the function functions that the java language needs to call, and the other is the core library of Android.
  • the application layer and the application framework layer run in virtual machines.
  • the virtual machine executes the java files of the application layer and the application framework layer as binary files.
  • the virtual machine is used to perform functions such as object lifecycle management, stack management, thread management, safety and exception management, and garbage collection.
  • a system library can include multiple functional modules. For example: surface manager (surface manager), media library (Media Libraries), 3D graphics processing library (eg: OpenGL ES), 2D graphics engine (eg: SGL), etc.
  • surface manager surface manager
  • media library Media Libraries
  • 3D graphics processing library eg: OpenGL ES
  • 2D graphics engine eg: SGL
  • the Surface Manager is used to manage the display subsystem and provides a fusion of 2D and 3D layers for multiple applications.
  • the media library supports playback and recording of a variety of commonly used audio and video formats, as well as still image files.
  • the media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.
  • the 3D graphics processing library is used to implement 3D graphics drawing, image rendering, compositing, and layer processing.
  • 2D graphics engine is a drawing engine for 2D drawing.
  • the kernel layer is the layer between hardware and software.
  • the kernel layer contains at least display drivers, camera drivers, audio drivers, and sensor drivers.
  • FIG. 3A depicts a scenario in which the terminal 100 initiates an emergency call in an area covered by the PLMN-1 network.
  • PLMN-1 may represent the PLMN provided by operator A.
  • the HPLMN of the terminal 100 is PLMN-2, and the SIM card of the terminal 100 may contain HPLMN information of the terminal 100, where PLMN-2 may represent the PLMN provided by the operator B.
  • the base station 301 is used to access the PLMN-1 network provided by the operator A.
  • the terminal 100 can initiate an emergency call request within the area covered by the PLMN-1 network.
  • the emergency call refers to the special call service that the terminal dials, such as 110, 120, 911 and other numbers, when the terminal is in flight mode and the user encounters an emergency.
  • the user first enables the emergency call function on the terminal 100, the terminal 100 turns off the airplane mode, initiates a network search, and finds an available PLMN-1, the terminal 100 requests to register with the PLMN-1 network, and the terminal 100 registers with the PLMN-1
  • an emergency call request is sent to the PLMN-1 network through the base station 301 .
  • the emergency call request sent by the terminal 100 will be processed by the emergency call processing system of the PLMN-1 network.
  • the PLMN-1 network is not the HPLMN network of the terminal 100, and the emergency call processing system of the PLMN-1 network will reject the emergency call request, thereby causing the emergency call to fail.
  • FIG. 3B depicts a scenario in which the terminal 100 initiates an emergency call in a multi-operator core network (MOCN).
  • MOCN multi-operator core network
  • the same area can be covered by the networks of multiple operators at the same time.
  • the terminal 100 can access PLMNs of different operators through the same base station 301, and different operators share access networks, frequencies and cells by using MOCN.
  • PLMN-1 may represent the PLMN provided by operator A
  • PLMN-2 may represent the PLMN provided by operator B
  • PLMN-3 may represent the PLMN provided by operator C.
  • the HPLMN of the terminal 100 is PLMN-2.
  • the base station will broadcast the corresponding PLMN list in the area where the current terminal is located through system message 1 (SystemInformationBlockType1, SIB1), for example, the PLMN list includes PLMN-1, PLMN-2 and PLMN-3.
  • the PLMNs in the PLMN list have priorities.
  • the PLMNs in the PLMN list are sorted by priority. The priority can be preset by the operator.
  • the priority of PLMN-1 is higher than the priority of PLMN-2, The priority is greater than the priority of PLMN-3, and the priority may indicate the order in which the user requests to register with the corresponding network when searching the network.
  • the terminal 100 turns off the airplane mode, and after receiving the system message SIB1 sent by the base station 301, the terminal requests to register in the corresponding network according to the priority of the PLMN in the PLMN list, After successful registration, make an emergency call.
  • PLMN-1 in the PLMN list has the highest priority.
  • the terminal 100 starts to search the network, after obtaining the PLMN list, it first initiates a registration request to PLMN-1.
  • the terminal 100 After successfully registering with the PLMN-1 network, the terminal 100 passes the PLMN-1 network. Make an emergency call request. However, the emergency call request sent by the terminal 100 will be processed by the emergency call processing system of the PLMN-1 network. Since the PLMN-1 network is not the HPLMN network of the terminal 100, the emergency call processing system of the PLMN-1 network will reject the emergency call request, thereby causing the emergency call to fail.
  • FIG. 4 is a flowchart of a network selection method provided by an embodiment of the present application.
  • the network selection method can be applied to the scenario in which the terminal is in the airplane mode and the user enables the emergency call function in the MOCN network.
  • the network selection method may include the following steps:
  • Step 410 When the user turns on the emergency call function in the airplane mode, the terminal can obtain the PLMN information of the SIM card, and the PLMN information of the SIM card includes the HPLMN information of the terminal.
  • the terminal turns off airplane mode. After the terminal turns off the airplane mode, it can receive system messages broadcast by the base station.
  • Step 420 The terminal receives the SIB1 system message broadcasted by the base station.
  • the SIB1 system message broadcast by the base station includes a list of PLMNs in the area where the current terminal is located. After receiving the system message SIB1, the terminal parses the system message SIB1 to obtain the PLMN list.
  • Step 430 The terminal inquires whether the PLMN list contains the HPLMN of the terminal according to the acquired PLMN list, and if the PLMN list contains the HPLMN of the terminal, step 440 is performed.
  • a PLMN has a unique PLMN ID, which is used to identify different PLMNs. You can find out whether HPLMN is included by querying the PLMN ID.
  • the acquired PLMN list includes three PLMNs, the PLMN IDs of the three PLMNs are PLMN-1, PLMN-2, and PLMN-3 respectively, and the PLMN ID of the HPLMN of the terminal is PLMN-2. After the terminal finds that PLMN-2 is included in the PLMN list, step 440 is performed.
  • Step 440 The terminal selects the HPLMN network, wherein selecting the HPLMN network means that the terminal initiates a registration request to the network. After the registration is successful, the terminal can initiate an emergency call request through the HPLMN network.
  • Step 450 If the PLMN list does not contain the HPLMN of the terminal, query whether the PLMN list contains the equivalent home public land mobile network (EHPLMN) of the terminal.
  • the EHPLMN is a PLMN on the same level as the terminal's HPLMN.
  • the EHPLMN also has a PLMN ID, which is used to identify different EHPLMNs, and can be queried according to the PLMN ID of the EHPLMN. If there is, step 460 is performed.
  • Step 460 The terminal selects the EHPLM network, wherein selecting the EHPLM network means that the terminal initiates a registration request to the network. After the registration is successful, the terminal can initiate an emergency call request through the EHPLMN network.
  • Step 470 If the PLMN list does not contain the EHPLM of the terminal, the terminal selects a PLMN with a higher priority according to the priority of the PLMN network in the PLMN list, and initiates a registration request to the PLMN with a higher priority.
  • Step 480 After the terminal registers with the selected network, an emergency call request is initiated through the selected network, and the network selected by the terminal receives the emergency call request and executes the emergency call task.
  • FIG. 5 is a signaling interaction diagram of a network selection method provided by an embodiment of the present application.
  • the network selection method described above may include the following steps:
  • Step S501 In the airplane mode, the terminal obtains the PLMN information of the SIM card after detecting the operation of the user to enable the emergency call function, the PLMN information of the SIM card includes the HPLMN information of the terminal, and the terminal turns off the airplane mode. After the terminal turns off the airplane mode, you can start searching the Internet.
  • Step S502 The base station sends a SIB1 system message to the terminal through broadcasting, where the SIB1 system message includes a list of PLMNs in the area where the current terminal is located.
  • Step S503 After receiving the system message SIB1, the terminal parses the system message SIB1 to obtain a PLMN list.
  • Step S504 After acquiring the PLMN list, the terminal inquires whether the PLMN list contains the terminal's HPLMN, and if the PLMN list contains the terminal's HPLMN, the terminal selects the HPLMN network, wherein selecting the HPLMN network means that the terminal initiates a registration request to the network. , after the registration is successful, the terminal can initiate an emergency call request through the HPLMN network. If the terminal's HPLMN is not included, query whether the terminal's EHPLM is included in the PLMN list.
  • the terminal selects the EHPLM network, where selecting the EHPLM network means that the terminal initiates a registration request to the network, and the registration is successful Afterwards, the terminal can initiate an emergency call request through the EHPLMN network. If the EHPLM of the terminal is not included, the terminal selects a PLMN with a higher priority according to the priority of the PLMN network in the PLMN list, and initiates a registration request to the PLMN with a higher priority.
  • Step S505 After the selected network is successfully registered, the terminal initiates an emergency call request.
  • the network selected by the terminal receives the emergency call request, and executes the emergency call task through the emergency call system of the network.
  • the terminal when the user enables the emergency call function of the terminal, the terminal can obtain the HPLMN information in the SIM, turn off the airplane mode, and obtain the PLMN list in the area by parsing the system message SIB1 broadcast by the base station , based on the obtained PLMN list, query according to the PLMN ID, and preferentially select the HPLMN network and the EHPLMN network in the PLMN list.
  • the terminal After the terminal successfully registers on the selected HPLMN network or EHPLMN network, it can initiate an emergency call request through the selected HPLMN network or EHPLMN network, and the selected HPLMN network or EHPLMN network receives the emergency call request and makes an emergency call through the network.
  • the system executes the emergency call task, which improves the success rate of the emergency call.
  • Each functional unit in each of the embodiments of the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Telephone Function (AREA)

Abstract

L'invention concerne un procédé de sélection de réseau et un dispositif électronique, qui se rapportent au domaine technique de la communication sans fil. Le procédé de sélection de réseau comprend les étapes consistant : à obtenir un identifiant d'un réseau mobile terrestre public domestique (HPLMN); à obtenir une liste de réseau mobile terrestre public (PLMN), les PLMN dans la liste de PLMN étant agencés dans l'ordre, et les PLMN ayant des identifiants; à déterminer si la liste de PLMN possède un HPLMN; et lorsqu'il est déterminé que la liste de PLMN possède le HPLMN, à sélectionner le HPLMN. Ainsi, le terminal peut hiérarchiser la sélection et le registre avec un réseau PLMN optimal, et envoyer une demande d'appel d'urgence au moyen du réseau PLMN sélectionné, améliorant le taux de réussite des appels d'urgence d'une borne.
PCT/CN2022/071603 2021-01-14 2022-01-12 Procédé et dispositif de sélection de réseau Ceased WO2022152167A1 (fr)

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