CN213754575U - Intelligent mobile phone integrated with LTE-4G private network module - Google Patents

Abstract

The utility model provides an integrated LTE-4G private network module's smart mobile phone, include: the intelligent mobile phone comprises a smart mobile phone mainboard, a first serial port module, a second serial port module and an LTE-4G private network module, wherein the smart mobile phone mainboard is connected to the LTE-4G private network module through the first serial port module and the second serial port module respectively. The utility model integrates the LTE-4G private network module at the periphery of the smart phone, thereby leading the smart phone to not only keep the traditional network, but also be accessed into a specific private network environment; and because the mainboard provides is 3.3V's operating voltage, consequently, the utility model discloses a first serial port module and second serial port module are connected smart mobile phone mainboard and LTE-4G private network module respectively, and then satisfy its level conversion and power supply demand, can also satisfy different serial communication demands.

Description

Intelligent mobile phone integrated with LTE-4G private network module

Technical Field

The utility model relates to an extension of 4G private network module is used, especially relates to an integrated LTE-4G private network module's smart mobile phone.

Background

In recent years, emergencies and natural disaster events occurring in various places have presented serious challenges to government or enterprise work. Such as: in 2008, 12 months and 5 months, a major earthquake in Wenchuan, Sichuan occurs; 5 firemen caught fire in the Harbin warehouse in the beginning of 2015; in 2015, 6, 1, 21 min, 30 min, the star wheel in the east suddenly meets tornado in the course of driving from Nanjing to Chongqing, and sinks in the Yangtze river, the midstream of China, the Hubei prison water area. The emergency communication system is an important component of the whole government emergency command system and is an effective extension of the emergency command capability of government institutions.

With the development of communication technology, the requirements of customers on the aspects of site real-time monitoring, video/image transmission, data transmission, site command scheduling, real-time performance and the like are higher and higher, so that governments pay more and more attention to the layout and application of private networks and the investment on the private networks is greatly increased, but if an independent product is specially developed, the popularization degree and the application range of the product are limited.

Disclosure of Invention

The utility model aims to solve the technical problem that a need provide one kind and had both kept current network, can insert the smart mobile phone of the integrated LTE-4G private network module of specific private network environment again, be convenient for improve its application scope and popularization degree.

To this end, the utility model provides an integrated LTE-4G private network module's smart mobile phone, include: the intelligent mobile phone comprises a smart mobile phone mainboard, a first serial port module, a second serial port module and an LTE-4G private network module, wherein the smart mobile phone mainboard is connected to the LTE-4G private network module through the first serial port module and the second serial port module respectively.

The utility model discloses a further improvement lies in, first string oral module includes level conversion chip U295, electric capacity C116 and electric capacity C117, the level input end of level conversion chip U295 is connected to the VDD power supply mouth of smart mobile phone mainboard, and through electric capacity C116 ground connection; the level output end of the level conversion chip U295 is connected to the service serial port power supply end of the LTE-4G private network module and is grounded through the capacitor C117.

The utility model discloses a further improvement lies in, the second serial port module includes level conversion chip U601, electric capacity C141 and electric capacity C142, the level input end of level conversion chip U601 is connected to the VDD power supply mouth of smart mobile phone mainboard, and through electric capacity C141 ground connection; the level output end of the level conversion chip U601 is connected to the debugging serial port power supply end of the LTE-4G private network module and is grounded through the capacitor C142.

The utility model discloses a further improvement lies in, second serial port module still includes resistance R70 and resistance R71, resistance R70's both ends respectively with level shift chip U601's transmission input port is connected with the transmission delivery outlet, resistance R71's both ends respectively with level shift chip U601's receipt input port is connected with the receipt delivery outlet.

The utility model discloses a further improvement lies in, still includes bluetooth module, bluetooth module set up in the smart mobile phone mainboard is peripheral, and with the smart mobile phone mainboard is connected.

The utility model discloses a further improvement lies in, still includes the WIFI module, the WIFI module set up in the smart mobile phone mainboard is peripheral, and with the smart mobile phone mainboard is connected.

The utility model discloses a further improvement lies in, still includes the mobile data network module, the mobile data network module set up in the smart mobile phone mainboard is peripheral, and with the smart mobile phone mainboard is connected.

The utility model discloses a further improvement lies in, the smart mobile phone mainboard is connected to through flexible FPC board respectively LTE-4G private network module.

The utility model discloses a further improvement lies in, still includes external antenna, LTE-4G private network module is connected to the basic station through external antenna.

The utility model discloses a further improvement lies in, still include receiving and dispatching radio frequency module and power amplifier module, receiving and dispatching radio frequency module and power amplifier module respectively with LTE-4G private network module is connected.

Compared with the prior art, the beneficial effects of the utility model reside in that: an LTE-4G private network module is integrated on the periphery of the smart phone, so that the smart phone can not only keep a traditional network, but also can be accessed to a specific private network environment; because the mainboard provides 3.3V working voltage, the utility model connects the smart phone mainboard and the LTE-4G private network module through the first serial port module and the second serial port module respectively, thereby meeting the level conversion and power supply requirements and meeting different serial port communication requirements; on this basis, still kept bluetooth module, WIFI module and mobile data network module in the CPU periphery of smart mobile phone mainboard, application scope is wide, the popularization and the popularization of the product of being convenient for.

Drawings

Fig. 1 is a schematic block diagram of the overall structure of an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a first serial port module according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a second serial port module according to an embodiment of the present invention;

fig. 4 is a schematic block diagram of a circuit for implementing level conversion by the serial port module according to an embodiment of the present invention;

fig. 5 is a schematic diagram of the application of an embodiment of the present invention to a private network communication network.

Detailed Description

Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

The current private network market generally has diversified and customized requirements facing specific customers, so that the special industry or customers need to be deeply understood, and the clamping advantages of faucet enterprises with channels and resources are very obvious. The industry integration is accelerated, and the LTE-4G private network field enters a rapid development period. In the LTE application layer, 2 types are divided: the technical requirements and thresholds of the LTE terminal application and the LTE private network application based on the public network are low, and the competition is severe. The latter LTE private network relates to the fusion of a physical transmission layer and a system application layer, is particularly suitable for industrial customers with higher requirements on safety and stability, and needs to be provided with rich system integration application experience and support of development and design capability of rear-end products. The domestic LTE construction is in the starting stage, and besides the 4G public network, the LTE-4G private network application in the industry field has a plurality of spaces.

The portable emergency communication system solution is based on the LTE-4G technology and provides voice cluster and broadband data transmission. Meanwhile, the method has strong technical advantages in the aspects of network safety, reliability, expandability and the like, and can be quickly applied to emergency communication scenes such as rescue scene, major event guarantee, preemptive rescue, tactical command and the like.

The embodiment aims to integrate the LTE-4G private network module 4 aiming at the smart phone, so that the smart phone is provided with a multifunctional handheld terminal capable of joining in private network communication, and great convenience is provided for field operation, city construction and even aviation transmission field.

As shown in fig. 1 to fig. 3, this example provides a smart phone integrated with an LTE-4G private network module, including: the intelligent mobile phone comprises a main board 1 of the intelligent mobile phone, a first serial port module 2, a second serial port module 3 and an LTE-4G private network module 4, wherein the main board 1 of the intelligent mobile phone is connected to the LTE-4G private network module 4 through the first serial port module 2 and the second serial port module 3 respectively. The smart phone mainboard 1 is provided with functions of BT Bluetooth, wireless WIFI, a mobile data network and the like at the periphery of a CPU, namely a Bluetooth module 5, a WIFI module 6 and a mobile data network module 7, wherein the Bluetooth module 5, the WIFI module 6 and the mobile data network module 7 are arranged at the periphery of the CPU of the smart phone mainboard 1 and are connected/communicated with the smart phone mainboard 1.

The LTE-4G private network module 4 is preferably a 230M LTE-4G private network module, and the LTE-4G private network module 4 is integrated on the periphery of the smart phone, so that the smart phone can not only keep a traditional network, but also can be accessed to a specific private network environment.

It is worth mentioning that, because the smart phone motherboard 1 provides the working voltage of 3.3V, and the power supply voltage of the LTE-4G private network module 4 is 3.2V-3.4V, and the typical voltage is 3.3V, it is also necessary to provide a service serial port and debug serial port communication, therefore, in order to meet the problem of working current and different serial port communication, the first serial port module 2 and the second serial port module 3 are designed to respectively connect the smart phone motherboard 1 and the LTE-4G private network module 4, thereby meeting the level conversion and power supply requirements, and also meeting different serial port communication requirements.

Specifically, as shown in fig. 2, the first serial port module 2 in this example includes a level conversion chip U295, a capacitor C116, and a capacitor C117, where a level input end of the level conversion chip U295 is connected to a VDD power supply port of the smartphone motherboard 1, and is grounded through the capacitor C116; the level output end of the level conversion chip U295 is connected to the service serial port power supply end of the LTE-4G private network module 4, and is grounded through the capacitor C117.

As shown in fig. 3, the second serial port module 3 in this example includes a level conversion chip U601, a capacitor C141, a capacitor C142, a resistor R70, and a resistor R71, where a level input end of the level conversion chip U601 is connected to a VDD power supply port of the smart phone motherboard 1 and is grounded through the capacitor C141; the level output end of the level conversion chip U601 is connected to the debugging serial port power supply end of the LTE-4G private network module 4 and is grounded through the capacitor C142; two ends of the resistor R70 are respectively connected with a sending input port (UTXD 2) and a sending output port (UTXD 2_ S) of the level conversion chip U601, and two ends of the resistor R71 are respectively connected with a receiving input port (URXD 2) and a receiving output port (URXD 2_ S) of the level conversion chip U601.

In this embodiment, the first serial port module 2 and the second serial port module 3 are respectively used as a service serial port and a debugging serial port. The service serial port (the first serial port module 2) is preferably used for realizing information transmission such as dial-up networking, AT instruction sending and the like; the debug serial port (second serial port module 3) is preferably used for being responsible for log debug printing and version upgrading.

As shown in fig. 2 and fig. 3, in this example, the voltage of the main chip power supply VDD of the smart phone motherboard 1 is 1.8V, the service serial port VDD corresponding to the LTE-4G private network module 4 needs 2.8V, the debugging serial port VCC needs 3.3V, and the main chip of the smart phone motherboard 1 cannot directly supply a level matched with the serial port of the LTE-4G private network module 4, so that level conversion is required. In this embodiment, the first serial port module 2 and the second serial port module 3 adopt the same level conversion principle, and as shown in fig. 4, when 1.8V is converted into 2.8V, the resistor R71 and the resistor R72 are in an NC (no resistor) state.

In fig. 4, UM3302H chip is preferably used as a level conversion chip, which can provide a stable voltage range for a 20Mbs serial port, and a higher data rate up to 100Mbps in a specific voltage domain, and the principle corresponds to fig. 2 and 3, but fig. 4 is a schematic block diagram, and the detailed circuit principle of fig. 2 and 3 is not shown. Among these, the a1 port and the a2 port are intended to track VCCA, which accepts any supply voltage from 1.2V to 3.6V. The B1 port and the B2 port are intended to track the VCCB, which accepts any supply voltage from 1.65V to 5.5V. The level shifting chip has a two-channel in-phase converter using two independent configurable power rails. Any voltage of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V can be converted with each other, and the two I/O ports are both automatic induction. When the power-on sequence is carried out, the VCCA is less than or equal to VCCB, and the equipment is not damaged when the VCCA is more than or equal to VCCB during the power-on sequence, so that any power supply can be added firstly. When either VCC is off (VCCA/B = 0V), the circuit will disable all output ports. When off, UM3302H has an OE input that is used to disable the device by setting OE = low, placing all I/os in a high impedance state.

Different serial port communications need to be designed and met in this embodiment because hardware bases need to be provided for different applications such as dial-up networking, AT instruction sending, serial port debugging and module upgrading, serial port functions can be divided and multiplexed after the hardware bases of the first serial port module 2 and the second serial port module 3 are provided, and the first serial port module 2 and the second serial port module 3, which are connected with the main chip of the smartphone motherboard 1 and the LTE-4G private network module 4, are respectively used as a service serial port and a debugging serial port.

For example, 2 logic channels are virtualized from a serial device/dev/ttyS 0 of a service serial port, and the baud rate configured by the virtual serial port is 460800 bit/s. And assigning/dev/chn/1 to pppd dialing, and using/dev/chn/2 as an AT command channel. After network registration, a pppd dialing program is started, and the private network mobile phone and the private network base station establish connection and are allocated to an ip address. The main chip of the smart phone main board 1 performs information interaction with the LTE-4G private network module 4 through an AT instruction, if AT + CSQ is sent to the LTE-4G private network module 4, the signal strength can be displayed, if the AT + CGREG module is sent to return "CGREG, 0, 1", it indicates that network access is successful, and if "CGREG, 0, 2" is returned, the network is not attached. The serial port device for debugging the serial port is/dev/ttyS 2, and the functions of the serial port device include collecting module log information, upgrading the version of the module and the like. Of course, the design of the serial port multiplexing is to illustrate the design of the first serial port module 2 and the second serial port module 3, and belongs to the preferable extension application, the protection required by the application is that the hardware schematic block diagram and the hardware basis of the first serial port module 2 and the second serial port module 3 are adopted, as for the smart phone motherboard 1 and the LTE-4G private network module 4, the existing integrated motherboard and module can be used, and the design can be developed by self, as long as the connection principle designed according to the schematic block diagram of fig. 1 is met.

Preferably, the smart phone main board 1 is connected to the LTE-4G private network module 4 through flexible FPC boards, respectively, so as to facilitate production and assembly; the example also comprises an external antenna 8, and the LTE-4G private network module 4 is connected to a base station through the external antenna 8 to receive base station signals. The wireless communication system also preferably comprises a radio frequency receiving and transmitting module and a power amplifier module, wherein the radio frequency receiving and transmitting module and the power amplifier module are respectively connected with the LTE-4G private network module 4, and the signal strength and the stability are respectively improved through the functions of a radio frequency receiving and transmitting chip and a power amplifier chip.

The present common network, also called public network, is a kind of common civil network, it is a public network provided by the operator to connect the user to the internet, and the private network communication refers to the services of emergency communication, command scheduling and daily work communication, etc. provided for public safety, transportation, energy and industry and commerce, etc., and is a proprietary and exclusive communication system constructed mainly for meeting the command scheduling.

As shown in fig. 5, the command dispatcher station is connected to the LTE private network base station through a network cable, and can control the LTE private network, including the transmission power, the signal frequency, and the turning on and off of the base station. The private network base station, the private network mobile phone and the private network mobile phone, and the private network mobile phone and the private network equipment can carry out intra-domain communication. Therefore, the present embodiment aims to realize the integration of the 230M LTE-4G private network module in the smart phone through the schematic block diagram and the circuit diagram of fig. 1 to 3 and the integrated module (such as the LTE-4G private network module) in the prior art, and the application range is wide, and the popularization and the promotion of the product are also facilitated.

The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims (10)

1. A smart phone integrated with an LTE-4G private network module, comprising: the intelligent mobile phone comprises a smart mobile phone mainboard, a first serial port module, a second serial port module and an LTE-4G private network module, wherein the smart mobile phone mainboard is connected to the LTE-4G private network module through the first serial port module and the second serial port module respectively.

2. The smart phone integrated with the LTE-4G private network module of claim 1, wherein the first serial port module comprises a level conversion chip U295, a capacitor C116 and a capacitor C117, a level input terminal of the level conversion chip U295 is connected to a VDD power supply port of the smart phone motherboard and is grounded through the capacitor C116; the level output end of the level conversion chip U295 is connected to the service serial port power supply end of the LTE-4G private network module and is grounded through the capacitor C117.

3. The smart phone integrated with the LTE-4G private network module according to claim 1, wherein the second serial module comprises a level conversion chip U601, a capacitor C141 and a capacitor C142, a level input end of the level conversion chip U601 is connected to a VDD power supply port of the smart phone motherboard and is grounded through the capacitor C141; the level output end of the level conversion chip U601 is connected to the debugging serial port power supply end of the LTE-4G private network module and is grounded through the capacitor C142.

4. The smart phone integrated with the LTE-4G private network module according to claim 3, wherein the second serial module further comprises a resistor R70 and a resistor R71, two ends of the resistor R70 are respectively connected to the transmitting input port and the transmitting output port of the level conversion chip U601, and two ends of the resistor R71 are respectively connected to the receiving input port and the receiving output port of the level conversion chip U601.

5. The smart phone integrated with the LTE-4G private network module according to any one of claims 1 to 4, further comprising a Bluetooth module, wherein the Bluetooth module is disposed at the periphery of the smart phone motherboard and connected with the smart phone motherboard.

6. The smart phone integrated with the LTE-4G private network module according to any one of claims 1 to 4, further comprising a WIFI module, wherein the WIFI module is arranged at the periphery of the smart phone main board and connected with the smart phone main board.

7. The smart phone integrated with the LTE-4G private network module according to any one of claims 1 to 4, further comprising a mobile data network module, wherein the mobile data network module is disposed at the periphery of the smart phone motherboard and connected with the smart phone motherboard.

8. The smart phone integrated with the LTE-4G private network module according to any one of claims 1 to 4, wherein the smart phone main board is connected to the LTE-4G private network module through a flexible FPC board respectively.

9. The smart phone integrated with the LTE-4G private network module according to any one of claims 1 to 4, further comprising an external antenna, wherein the LTE-4G private network module is connected to the base station through the external antenna.

10. The smart phone integrated with the LTE-4G private network module according to any one of claims 1 to 4, further comprising a radio frequency transceiver module and a power amplifier module, wherein the radio frequency transceiver module and the power amplifier module are respectively connected with the LTE-4G private network module.

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