CN112333797B - System and method for intelligent switching of terminal communication card operators based on eSIM technology - Google Patents
System and method for intelligent switching of terminal communication card operators based on eSIM technology Download PDFInfo
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- CN112333797B CN112333797B CN202011149227.4A CN202011149227A CN112333797B CN 112333797 B CN112333797 B CN 112333797B CN 202011149227 A CN202011149227 A CN 202011149227A CN 112333797 B CN112333797 B CN 112333797B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a system and a method for intelligently switching terminal communication card operators based on an eSIM technology, wherein the system comprises a metering automatic terminal, a master station and a base station; the metering automation terminal comprises a clock module, a safety module, a remote communication module, a power module, a display module, an RS485 communication module, a carrier communication module, 4KEYS, an eSIM module external circuit, a universal asynchronous receiver transmitter UART, a serial peripheral interface SPI, an LCDC interface, a GPIO interface, an I2C interface and a PWM interface; the metering automation terminal is connected with the base station through the GPRS/CMDA and is communicated with the master station through the power line private network. According to the embodiment of the invention, through adding the eSIM module, the circuit design is simple, the communication card of the terminal is switched to the operator card number with better network signal according to the intensity of the operator signal, and the reliability of the communication between the terminal and the master station is ensured.
Description
Technical Field
The invention relates to the field of communication, in particular to a system and a method for intelligently switching terminal communication card operators based on an eSIM technology.
Background
At present, the metering automation terminal takes the communication mode of the physical SIM card of a single operator as the main mode, and if the problems of unstable network signals of the operator, poor contact of the SIM card, damage of the SIM card and the like exist, the equipment is directly dropped. According to statistics, the problems of disconnection and instability of the metering automation terminal are more than 80% caused by poor network signals of operators. For a metering automation terminal in a signal-free or signal-unstable environment, the existing processing mode is that an operator tests an operator network signal by using equipment on site, and then replaces an operator SIM card with a relatively good network signal. In practice, more than 50% of areas with poor field signals are remote areas, the labor cost of terminal disconnection processing caused by the network signal problem of operators is extremely high, the efficiency is extremely low, and the data acquisition integrity rate of the metering automation system is affected.
In order to solve the problem of terminal disconnection caused by poor network signals of operators, a communication switching device for an internet of things communication module, which is composed of an SIM card switching component, a multi-path switch, a plurality of SIM card expansion slots, a logic chip and the like, is currently available, but if the communication switching device is integrated on a remote communication module of a terminal, the communication switching device occupies a large physical space, is complex to control and has high cost, so that the communication switching device is not suitable for switching of a metering automation terminal communication card operator.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a system and a method for intelligently switching a terminal communication card operator based on an eSIM technology.
In order to solve the technical problems, the embodiment of the invention provides an intelligent switching system for terminal communication card operators based on an eSIM technology, which comprises a metering automation terminal, a master station and a base station; the metering automation terminal comprises a clock module, a security module, a remote communication module, an eSIM module external circuit, a universal asynchronous receiver transmitter UART, a serial peripheral interface SPI, a power module, a display module, an RS485 communication module, a carrier communication module, a 4KEYS, an LCDC interface, a GPIO interface, an I2C interface and a PWM interface; the metering automation terminal is connected with the base station through the GPRS/CMDA and is communicated with the master station through the power line private network.
The security module adopts a national security chip to ensure the security of terminal data.
And the remote communication module is provided with an eSIM module, and performs data interaction with the terminal through the UART.
The eSIM module external circuit comprises: the external circuit of the eSIM module mainly comprises an eSIM module, a switch chip, a physical SIM card slot and an eSIM patch; the eSIM module has the function of remotely writing the numbers of three major operators of China Mobile, china telecom, china Unicom, and the eSIM supports the switching instruction of the aerial number writing.
The eSIM module comprises: the switch chip is provided with two channels, namely a channel A and a channel B, respectively; the channel A is connected with a physical SIM card slot circuit, the channel B is connected with an eSIM patch circuit, and the on-off control of the channel A, B is realized by controlling the high level and the low level of the pins, so that whether the physical SIM card or the eSIM patch is used is controlled.
The metering automation terminal comprises: the UART of the universal asynchronous receiver transmitter is communicated with the carrier communication module and the RS485 communication module to collect ammeter data; the power module provides electric energy for the metering automation terminal; the LCDC interface is mainly used for realizing the function of interacting with signals of the display module; the GPIO interface is connected with the 4KEYS to realize signal interaction; and the I2C interface is in communication with the clock module, so that clock signals are interacted, and the PWM receives corresponding pulse modulation signals.
A method for intelligent switching of terminal communication card operators based on eSIM technology comprises the following steps: searching network signals of the conventional SIM card operators and judging the intensity of the network signals; the existing SIM card network signals are normal, and the condition that TCP logs in a master station server is confirmed; after the TCP logs in the master station server and is successfully triggered by the condition, the control logic of the switching card number is reset to an initial state.
The searching the network signal of the prior SIM card operator and judging the strength of the network signal comprises the following steps: when the terminal does not search the network signal of the existing SIM card operator, starting an interval switching program; after the interval switching program is started, the terminal sends an instruction for switching the SIM card number to the remote communication module, and an eSIM module in the remote communication module switches the SIM card number to the card number of any other operator; and the terminal searches and judges the switched operator network signals again, when the network signals are not searched, the interval switching program is continuously started, the SIM card number is switched to the card number of another operator until the SIM card number of the operator with better network signals is switched to, and the process is ended.
The confirmation of the TCP logging in the master station server comprises the following steps: when the terminal can search the network signal of the prior SIM card operator but the TCP fails to log on the master station server and judges that the TCP fails to log on the master station server twice, the TCP retries to log on the master station server after waiting about 20 seconds; the terminal can search the network signal of the operator but fails to log in the master station server by the TCP, and when judging that the continuous two times of TCP fails to log in the master station server, the terminal starts an interval switching program to switch the SIM card number of the terminal once.
After the TCP logs in the master station server and is successfully triggered by the condition, logic for switching the card number is reset to an initial state, and the method comprises the following steps: when the terminal does not successfully log in the master station server for 2 hours continuously, the terminal sends a dialing instruction to the remote communication module again, and the logic of all the switch card numbers is reset to an initial state.
The embodiment of the invention provides an intelligent switching system and method for terminal communication card operators based on an eSIM technology, which can realize intelligent switching of SIM card numbers of three operators of China Mobile, china telecom and China Unicom through an interval switching program, has simple circuit design, is easy to integrate into a remote module, avoids the problems of manual field SIM card replacement, service limitation to operators and the like, and solves the problems of complex system, low stability and integration level and high manpower maintenance cost in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an intelligent switching system for a terminal communication card operator based on eSIM technology.
Fig. 2 is a flow chart of a method for intelligent switching of a terminal communication card operator based on eSIM technology.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1, fig. 1 is a schematic structural diagram of an intelligent switching system for a terminal communication card operator based on eSIM technology.
As shown in fig. 1, an intelligent switching system for terminal communication card operators based on eSIM technology includes a metering automation terminal 103, a master station 101, and a base station 102; the metering automation terminal 103 comprises a clock module, a security module, a remote communication module, an eSIM module external circuit, a universal asynchronous receiver transmitter UART, a serial peripheral interface SPI, a power module, a display module, an RS485 communication module, a carrier communication module, a 4KEYS, an LCDC interface, a GPIO interface, an I2C interface and a PWM interface; the metering automation terminal 103 is connected to the base station 102 via GPRS/CMDA and communicates with the master station 101 via a power line private network.
The security module adopts a national security chip to ensure the security of terminal data. The metering automation terminal 103 communicates with the security module through the SPI interface, so that the security of terminal data is ensured.
The remote communication module is provided with an eSIM module, and performs data interaction with the terminal through a universal asynchronous receiver transmitter UART.
The eSIM module external circuit comprises: the external circuit of the eSIM module mainly comprises an eSIM module, a switch chip, a physical SIM card slot and an eSIM patch; the eSIM module has the function of remotely writing the numbers of three major operators of China Mobile, china telecom, china Unicom, and the eSIM supports the switching instruction of the aerial number writing.
The eSIM module comprises: the switch chip is provided with two channels, namely a channel A and a channel B, respectively; the channel A is connected with a physical SIM card slot circuit, the channel B is connected with an eSIM patch circuit, and the on-off control of the channel A, B is realized by controlling the high level and the low level of the pins, so that whether the physical SIM card or the eSIM patch is used is controlled. Typically, the default pin is in a low state. At low level, the switch chip opens channel a, using the physical SIM card. The card number of the SIM card is provided by three operators of China Mobile, china Unicom or China telecom.
When the external circuit of the eSIM module is powered on, detecting whether a physical SIM card is accessed; if the physical SIM card is detected to be accessed, the physical SIM card is preferentially used; if the physical SIM card access is not detected, the GPIO pin of the eSIM module outputs a high level, and the switch chip switches the channel A to the channel B, namely the eSIM card is used.
The metering automation terminal 103 includes: the UART of the universal asynchronous receiver transmitter is communicated with the carrier communication module and the RS485 communication module to collect ammeter data; the power module provides electric energy for the metering automation terminal 103; the LCDC interface is mainly used for realizing the function of interacting with signals of the display module; the GPIO interface is connected with the 4KEYS to realize signal interaction; and the I2C interface is in communication with the clock module, so that clock signals are interacted, and the PWM receives corresponding pulse modulation signals.
On the basis of not expanding the prior SIM card slot, an eSIM module is added, the circuit design is simple, and the communication card of the terminal is switched to the operator card number with better network signal according to the intensity of the operator signal.
Referring to fig. 2, fig. 2 is a flow chart of a method for performing intelligent switching on a terminal communication card operator based on eSIM technology.
As shown in fig. 2, a method for intelligently switching terminal communication card operators based on eSIM technology includes:
s201, searching network signals of the existing SIM card operators and judging the intensity of the network signals.
S202, the existing SIM card network signal is normal, and the TCP is confirmed to log in the master station server.
And S203, after the successful condition triggering of the TCP login server master station, the logic of the switching card number is reset to an initial state.
S201, searching network signals of the existing SIM card operators and judging the intensity of the network signals. And when the terminal does not search the network signal of the existing SIM card operator, starting an interval switching program. After the interval switching program is started, the terminal sends an instruction for switching the SIM card number to the remote communication module, and the eSIM module in the remote communication module switches the SIM card number to the card number of any other operator. And then, the terminal judges whether the switched operator network signal can be searched again, if the operator network signal is still not searched, the interval switching program is continuously started, the SIM card number is switched to the card number of another operator, and the like. And (3) switching to the SIM card number of the operator with better network signals, and ending the flow. In order to reduce the frequent operation of switching SIM card numbers, the switching time interval of the interval switching program is set in a mode that the switching time interval correspondingly increases along with the increase of switching rounds. In general, the switching time interval may be set to: the switching time interval of the 1 st to 3 rd turns is 5 minutes, the switching time interval of the 4 th to 6 th turns is 10 minutes, and the switching time interval of the 7 th and subsequent turns is 30 minutes. The mode that the switching interval time increases along with the switching turn is very suitable for three operators to switch, and the operation of frequently switching card numbers is effectively reduced.
S202, confirming that the network signal of the existing SIM card is normal and the TCP logs in the master station server, wherein the method comprises the following steps: when the terminal can search the network signal of the prior SIM card operator but the TCP fails to log on the master station server and judges that the TCP fails to log on the master station server twice, the TCP retries to log on the master station server after waiting about 20 seconds; the terminal can search the network signal of the operator but fails to log in the master station server by the TCP, and when judging that the continuous two times of TCP fails to log in the master station server, the terminal starts an interval switching program to switch the SIM card number of the terminal once.
S203, after successful conditional triggering of TCP logging in the master station server, logic of switching the card number is reset to an initial state, and the method comprises the following steps: and after the condition trigger that the TCP logs in the master station server successfully is met, the logic of the switching card number is reset to an initial state. When the terminal does not successfully log in the master station server for 2 hours continuously, the terminal sends a dialing instruction to the remote communication module again, and resets the logic of all the switching card numbers to an initial state, so that the condition that the TCP logs in the master station server for too long is avoided.
The embodiment of the invention provides an intelligent switching system and method for terminal communication card operators based on an eSIM technology, which can realize intelligent switching of SIM card numbers of three operators of China Mobile, china telecom and China Unicom through an interval switching program, has simple circuit design, is easy to integrate into a remote module, avoids the problems of manual field SIM card replacement, service limitation to operators and the like, and solves the problems of complex system, low stability and integration level and high manpower maintenance cost in the prior art.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program to instruct related hardware, the program may be stored in a computer readable storage medium, and the storage medium may include: read Only Memory (ROM), random access Memory (RAM, randomAccess Memory), magnetic disk or optical disk, and the like.
In addition, the intelligent switching system and method for terminal communication card operators based on the eSIM technology provided by the embodiment of the invention are described in detail, and specific examples are adopted to explain the principle and implementation mode of the invention, and the description of the above embodiment is only used for helping to understand the method and core ideas of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (2)
1. An intelligent switching system for terminal communication card operators based on an eSIM technology is characterized by comprising a metering automation terminal, a master station and a base station;
the metering automation terminal comprises a clock module, a security module, a remote communication module, a power module, a display module, an RS485 communication module, a carrier communication module, an eSIM module external circuit, a universal asynchronous receiver transmitter UART, a serial peripheral interface SPI, an LCDC interface, a GPIO interface, an I2C interface and a PWM interface;
the metering automation terminal is connected with the base station through the GPRS/CMDA and is communicated with the master station through the power line private network; the safety module adopts a national security chip to ensure the safety of the metering automation terminal data; the remote communication module is provided with an eSIM module, and performs data interaction with the metering automation terminal through the UART; the eSIM module external circuit comprises:
the external circuit of the eSIM module mainly comprises an eSIM module, a switch chip, a physical SIM card slot and an eSIM patch;
the eSIM module has the function of remotely writing three carrier numbers of China Mobile, china telecom, china Unicom, and the eSIM supports a switching instruction of aerial number writing; the eSIM module comprises:
the switch chip is provided with two channels, namely a channel A and a channel B, respectively;
the channel A is connected with the physical SIM card slot circuit, the channel B is connected with the eSIM patch circuit, and the on-off control of the channel A, B is realized by controlling the high level and the low level of a pin, so that whether the physical SIM card is used or the eSIM patch is used is controlled; the metering automation terminal comprises:
the UART of the universal asynchronous receiver transmitter is communicated with the carrier communication module and the RS485 communication module to collect ammeter data;
the power module provides electric energy for the metering automation terminal;
the LCDC interface is mainly used for realizing the function of interacting with signals of the display module;
the GPIO interface is connected with the 4KEYS to realize signal interaction;
and the I2C interface and the clock module realize the interaction of clock signals, and the PWM receives corresponding pulse modulation signals.
2. The intelligent switching method for the terminal communication card operators based on the eSIM technology is characterized by comprising the following steps:
searching network signals of the existing SIM card operators of the terminal and judging the intensity of the network signals;
the existing SIM card network signals are normal, and the condition that TCP logs in a master station server is confirmed;
after the TCP logs in the master station server and is successfully triggered by the conditions, the control logic of the switching card number is reset to an initial state; the searching the network signal of the prior SIM card operator and judging the strength of the network signal comprises the following steps:
when the terminal does not search the network signal of the existing SIM card operator, starting an interval switching program;
after the interval switching program is started, the terminal sends an instruction for switching the SIM card number to the remote communication module, and an eSIM module in the remote communication module switches the SIM card number to the card number of any other operator;
the terminal searches and judges the network signal of the operator after switching again, if the network signal is still not searched, the interval switching program is continuously started, the SIM card number is switched to the card number of another operator until the SIM card number of the operator with better network signal is switched to, and the process is ended; the confirmation of the TCP logging in the master station server comprises the following steps:
when the terminal can search the network signal of the prior SIM card operator but the TCP fails to log on the master station server and judges that the TCP fails to log on the master station server twice, the TCP retries to log on the master station server after waiting about 20 seconds;
the terminal can search the network signal of the operator but fails to log in the master station server by the TCP, and when judging that the continuous two times of TCP fails to log in the master station server, the terminal starts an interval switching program to switch the SIM card number of the terminal once; after the TCP logs in the master station server and is successfully triggered by the condition, the control logic for switching the card number is reset to an initial state, and the method comprises the following steps:
when the terminal does not successfully log in the master station server for 2 hours continuously, the terminal sends a dialing instruction to the remote communication module again, and the logic of all the switch card numbers is reset to an initial state.
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Families Citing this family (3)
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| CN113936448A (en) * | 2021-11-02 | 2022-01-14 | 广东电网有限责任公司 | Electric energy metering data transmission system |
| CN114390483A (en) * | 2021-12-30 | 2022-04-22 | 青岛鼎信通讯股份有限公司 | Method for realizing self-switching based on number portability and network switching of eSIM (embedded subscriber identity Module) remote communication module |
| CN114640403B (en) * | 2022-03-29 | 2024-04-26 | 上海移远通信技术股份有限公司 | ESIM terminal testing method, eSIM terminal testing device, eSIM terminal and storage medium |
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