CPE module

Abstract

The utility model discloses a CPE module group, comprising a Redcap module group, and an SIM card seat, a PHY module, a wireless communication module and a serial port module which are respectively connected with the Redcap module group, the SIM card seat is used for installing and connecting an SIM card, the PHY module is internally provided with an RGMII interface, the wireless communication module is used for transmitting wireless signals to the Redcap module group, the RGMII interface is used for Ethernet communication, and the Redcap module group is provided with a serial port module. And the serial port module comprises at least one RS485 interface and one RS232 interface, and is used for level conversion and communication with external industrial equipment. According to the utility model, multi-user access can be satisfied, the operation of replacing the SIM card is simplified, the SIM card is installed and connected through arranging the SIM card seat, and multi-user access and communication are carried out through the PHY module, the wireless communication module and the serial port module.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, and in particular to a CPE module. Background Technology

[0002] As application scenarios become increasingly segmented, the requirements for the mobility, long-range capability, and ease of deployment of 5G (5th Generation Mobile Communication Technology) terminals are becoming more stringent, especially in application scenarios such as ship access and transportation access, where these characteristics of 5G terminals are becoming increasingly important. These scenarios require 5G terminals to meet the needs of long-range access and rapid mobility even under thin coverage, while also facilitating convenient and rapid access for multiple users.

[0003] In addition, existing CPE (Customer premises equipment) devices in mobile communication scenarios still have problems such as not being able to meet the needs of multi-user access and the inconvenience of SIM (Subscriber Identity Module) card replacement. Utility Model Content

[0004] The main purpose of this invention is to propose a CPE module that aims to solve the problems of existing CPE devices in mobile communication scenarios, such as the inability to meet the needs of multiple users accessing the device and the inconvenience of SIM card replacement.

[0005] To achieve the above objectives, this utility model proposes a CPE module, including a Redcap module, and a SIM card slot, a PHY module, a wireless communication module, and a serial port module respectively connected to the Redcap module. The SIM card slot is used to install and connect a SIM card. The PHY module has a built-in RGMII interface. The wireless communication module is used to transmit wireless signals to the Redcap module. The RGMII interface is used for Ethernet communication. The serial port module includes at least one RS485 interface and one RS232 interface for level conversion and communication with external industrial equipment.

[0006] In one embodiment, the CPE module further includes an antenna interface, a first filter circuit, and an antenna connected in sequence. The antenna interface is connected to the Redcap module, and the first filter circuit is used to realize signal transmission and frequency tuning of the antenna.

[0007] In one embodiment, the first filter circuit includes a first inductor, a second inductor, a first capacitor, a second capacitor, and a third capacitor. The first inductor, the first capacitor, and the second capacitor are connected in parallel, forming a PI-type circuit. One end of the second inductor is connected to the antenna interface, and the other end of the second inductor is connected to one end of the third capacitor. The other end of the third capacitor is connected to the antenna.

[0008] In one embodiment, the Redcap module is further provided with a module interface, which includes a signal light, a first transistor, a second transistor, and a third transistor, with the first transistor, the second transistor, and the third transistor respectively connected to the signal light.

[0009] In one embodiment, the CPE module further includes a power management module and a buck DC regulation module. The power management module is connected to the Redcap module, and the input terminal of the buck DC regulation module is connected to the output terminal of the power management module. The power management module is used to regulate the output voltage of the buck DC module through a control signal.

[0010] In one embodiment, the buck DC regulation module includes a buck DC regulation chip, a third inductor, a fourth capacitor, and a fifth capacitor. One end of the third inductor is connected to the buck DC regulation chip, and the other end of the third inductor is connected to the fourth capacitor and the fifth capacitor, respectively. The fourth capacitor and the fifth capacitor are connected in parallel.

[0011] In one embodiment, the Redcap module is provided with a SIM interface, which is connected to the SIM card slot.

[0012] In one embodiment, the SIM interface is connected to a plurality of clamping diodes and a second filter circuit. The input terminal of the SIM interface is connected to the input terminal of the second filter circuit, and the second filter circuit is connected to the clamping diodes.

[0013] In one embodiment, the CPE module further includes a bidirectional voltage level conversion module, which is connected to the Redcap module and the serial port module respectively.

[0014] In one embodiment, the bidirectional voltage level conversion module includes a bidirectional voltage level conversion chip and an LED group connected in sequence, wherein the bidirectional voltage level conversion chip is connected to the Redcap module;

[0015] The bidirectional voltage level conversion chip is used to convert the first voltage level signal output by the Redcap module into a second voltage level signal, or to convert the externally input second voltage level signal into a first voltage level signal and transmit it to the Redcap module;

[0016] The LED group is used to indicate the operating status of the bidirectional voltage level conversion chip.

[0017] This utility model achieves multi-user access and simplifies SIM card replacement by using a Redcap module and a SIM card slot, PHY module, wireless communication module, and serial port module connected to the Redcap module. The SIM card slot is used to install and connect the SIM card, and the PHY module, wireless communication module, and serial port module enable multi-user access and communication. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the CPE module.

[0020] Figure 2 This is the circuit diagram for part A of the Redcap module;

[0021] Figure 3 This is the circuit diagram for part B of the Redcap module;

[0022] Figure 4 Antenna interface circuit diagram;

[0023] Figure 5 This is the module interface circuit diagram;

[0024] Figure 6 This is a circuit diagram for a wireless communication module.

[0025] Figure 7 This is the circuit diagram for the power management module;

[0026] Figure 8 Circuit diagram of the step-down DC regulation module;

[0027] Figure 9 This is the circuit diagram for the PHY module;

[0028] Figure 10 This is a circuit diagram for the SIM interface.

[0029] Figure 11 It is a bidirectional voltage level conversion module.

[0030] Explanation of icon numbers:

[0031] 1. Redcap module; 2. SIM card slot; 3. PHY module; 4. Wireless communication module; 5. Serial port module; 51. RS485 interface; 52. RS232 interface; 6. Antenna interface; 7. First filter circuit; 8. Antenna; L1003. First inductor; L1001. Second inductor; C1001. First capacitor; C1002. Second capacitor; C1003. Third capacitor; 9. Module interface; 91. Signal light; Q900. First transistor; Q901. Second transistor; Q903. Third transistor; 10. Power management module; 11. Buck DC regulation module; U11. Buck DC regulation chip; L4. Third inductor; C24. Fourth capacitor; C48. Fifth capacitor; J4. SIM interface; 12. Clamping diode; 13. Second filter circuit; 14. Bidirectional voltage level conversion module; U4. Bidirectional voltage level conversion chip; 141. LED light group.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] This utility model proposes a CPE module.

[0037] In the embodiments of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 9 As shown, the CPE module includes a Redcap module 1, and a SIM card slot 2, a PHY module 3, a wireless communication module 4, and a serial port module 5, all connected to the Redcap module 1. The SIM card slot 2 is used to install and connect a SIM card. The PHY module 3 has a built-in RGMII interface. The wireless communication module 4 transmits wireless signals to the Redcap module 1, and the RGMII interface is used for Ethernet communication. The serial port module 5 includes at least one RS485 interface 51 and one RS232 interface 52, used for level conversion and communication with external industrial equipment.

[0038] This invention utilizes a Redcap module 1, along with a SIM card slot 2, a PHY module 3, a wireless communication module 4, and a serial port module 5 connected to the Redcap module 1, to achieve multi-user access and simplify SIM card replacement. The SIM card slot 2 is used to install and connect SIM cards, and the PHY module 3, wireless communication module 4, and serial port module 5 enable multi-user access and communication. Using the Redcap module 1, the PHY module 3 with its built-in RGMII interface can achieve a 1000 Mbps wired network; furthermore, this embodiment supports USB-based internet access.

[0039] like Figure 4As shown, the CPE module also includes an antenna interface 6, a first filter circuit 7, and an antenna 8 connected in sequence. The antenna interface 6 is connected to the Redcap module 1. The first filter circuit 7 is used to realize the signal transmission and frequency tuning of the antenna 8. The antenna 8 is a MIMO 1T2R antenna 8. The wireless communication module 4 has a built-in WIFI6 chip with a PCIe interface and uses a 1T1R antenna 8, that is, a 1 transmit and 1 receive antenna 8, to realize 2.4G and 5G dual-band wireless networking.

[0040] Antenna interface 6 is responsible for transmitting the signals received by antenna 8 to the internal circuitry of Redcap module 1, and simultaneously transmitting the signals generated by Redcap module 1 to antenna 8 for transmission. Antenna interface 6 is connected to Redcap module 1 to ensure effective signal transmission between the two.

[0041] The first filter circuit 7 filters the signal received by the antenna 8, removing unwanted frequency components (such as noise or interference signals) while retaining the desired signal. Furthermore, the first filter circuit 7 can also perform frequency tuning on the signal to ensure transmission within a specific frequency band, thereby improving communication quality and efficiency.

[0042] Antenna 8 converts electrical signals into electromagnetic waves and transmits them into space, or converts received electromagnetic waves into electrical signals and transmits them to subsequent circuits. The performance of antenna 8 directly affects the communication distance, quality, and stability.

[0043] After receiving an external signal, antenna 8 transmits the signal to the first filter circuit 7 via antenna interface 6. The first filter circuit 7 filters and tunes the signal to ensure that it transmits within the required frequency band and removes interference signals. The processed signal is then transmitted to Redcap module 1 for further processing and demodulation.

[0044] The first filter circuit 7 is provided with a first inductor L1003, a second inductor L1001, a first capacitor C1001, a second capacitor C1002, and a third capacitor C1003. The first inductor L1003, the first capacitor C1001, and the second capacitor C1002 are connected in parallel. The first capacitor C1001, the second inductor L1001, and the second capacitor C1002 form a PI-type circuit. One end of the second inductor L1001 is connected to the antenna interface 6, and the other end of the second inductor L1001 is connected to one end of the third capacitor C1003. The other end of the third capacitor C1003 is connected to the antenna 8.

[0045] In this embodiment, the CPE module supports two antennas 8, namely ANT_MAIN (main antenna 8) and ANT_DIV (diversity antenna 8). The number of PI-type circuits is determined by the length of the traces. If the traces are long, two PI-type circuits are reserved for easy debugging; if the traces are short, only one PI-type circuit can be retained. The PI-type circuit has good frequency selectivity and filtering performance. The third capacitor C1003 can further filter out high-frequency noise and ensure that the signal can be transmitted to the antenna 8 efficiently. The signal enters the filtering circuit from the antenna interface 6, and after passing through the second inductor L1001, it presents high impedance for high-frequency signals and low impedance for low-frequency signals, thereby achieving preliminary selection of signal frequency.

[0046] like Figure 5 As shown, the Redcap module 1 is also equipped with a module interface 9. The module interface 9 is equipped with a signal light 91, a first transistor Q900, a second transistor Q901, and a third transistor Q903. The first transistor Q900, the second transistor Q901, and the third transistor Q903 are respectively connected to the signal light 91. The first transistor Q900 is connected to the WIFI light. When WIFI is off, the light does not light up. When the WIFI hotspot is emitted but there is no connection, the light flashes (on for 0.5s, off for 0.5s). When there is a WIFI connection, the light is always on. The second transistor Q901 and the third transistor Q903 are connected to a dual-color light. In abnormal situations such as no SIM card or no data plan, the red light of the dual-color light is always on. During network search, the green light of the dual-color light flashes (on for 0.25s, off for 0.25s). When the dialing is successful, the green light is always on.

[0047] like Figure 7 , Figure 8 As shown, the CPE module also includes a power management module 10 and a step-down DC regulation module 11. The power management module 10 is connected to the Redcap module 1, and the input terminal of the step-down DC regulation module 11 is connected to the output terminal of the power management module 10. The power management module 10 is used to regulate the output voltage of the step-down DC module through a control signal.

[0048] The power management module 10 is connected to the Redcap module 1 and is responsible for managing the distribution and regulation of power. It adjusts the output voltage of the step-down DC regulation module 11 through control signals to ensure that the Redcap module 1 or other related components can obtain a stable voltage supply. In this embodiment, the power management module 10 may also have functions such as overvoltage protection, undervoltage protection, and overcurrent protection to ensure the safe operation of the system.

[0049] The input terminal of the buck DC regulator module 11 is connected to the output terminal of the power management module 10, and is responsible for reducing the input voltage to the operating voltage required by the Redcap module 1 or other components. The buck DC regulator module 11 typically uses a switching power supply (such as a Buck circuit) or a linear regulator to regulate the voltage. Through the control signal of the power management module 10, the buck DC regulator module 11 can dynamically adjust the output voltage to adapt to different operating conditions or load requirements.

[0050] The power management module 10 generates corresponding control signals based on the requirements of the Redcap module 1 or other system conditions. These control signals are then transmitted to the buck DC-DC regulator module 11 to adjust its output voltage. The buck DC-DC regulator module 11 outputs the adjusted voltage to the Redcap module 1 or other loads to ensure their normal operation.

[0051] like Figure 8 As shown, the buck DC-DC regulator module 11 includes a buck DC-DC regulator chip U11, a third inductor L4, a fourth capacitor C24, and a fifth capacitor C48. One end of the third inductor L4 is connected to the buck DC-DC regulator chip U11, and the other end of the third inductor L4 is connected to both the fourth capacitor C24 and the fifth capacitor C48. The fourth capacitor C24 and the fifth capacitor C48 are connected in parallel. The buck DC-DC regulator chip U11 is a DC-DC buck converter chip that converts the input high voltage into a lower output voltage for use by the Redcap module 1 or other loads.

[0052] The output voltage of the buck DC regulator chip U11 will have some ripple (caused by switching action). The fourth capacitor C24 and the fifth capacitor C48 connected in parallel can absorb these high-frequency ripples, making the output voltage smoother. When the load current changes suddenly, the fourth capacitor C24 and the fifth capacitor C48 can provide instantaneous current to avoid large fluctuations in the output voltage.

[0053] like Figure 10 As shown, the Redcap module 1 is equipped with a SIM interface J4, which is connected to the SIM card slot 2. The SIM interface J4 is connected to several clamping diodes 12 and a second filter circuit 13. The input terminal of the SIM interface J4 is connected to the input terminal of the second filter circuit 13, and the second filter circuit 13 is connected to the clamping diodes 12.

[0054] SIM interface J4 is the communication interface between Redcap module 1 and the SIM card. SIM card socket 2 is the component that physically connects the SIM card. SIM interface J4 is electrically connected to the SIM card through SIM card socket 2. The stability and reliability of SIM interface J4 directly affect the normal operation of the SIM card. Therefore, additional protection circuitry is required. Clamping diode 12 protects SIM interface J4 from damage caused by voltage overshoot or electrostatic discharge (ESD). When the voltage of SIM interface J4 exceeds the normal operating range (e.g., due to electrostatic discharge or power fluctuations), clamping diode 12 will limit the voltage to a safe range to prevent damage to the SIM card or Redcap module 1.

[0055] The second filter circuit 13 is used to filter out noise and interference on the SIM interface J4. On the clock pin (CLK) and data pins (I / O) of the SIM interface J4, the second filter circuit 13 can filter out high-frequency interference, improving the stability of the communication signal. The second filter circuit 13 is connected to the clamping diode 12, possibly to provide additional protection while filtering. The second filter circuit 13 can reduce the noise level that the clamping diode 12 needs to handle, allowing it to focus more on handling voltage overshoot and ESD events.

[0056] Through the cooperation of the second filter circuit 13 and the clamping diode 12, the SIM interface J4 can operate stably in complex electromagnetic environments, reducing communication failures caused by noise or voltage fluctuations. The second filter circuit 13 can effectively suppress high-frequency noise, and the clamping diode 12 can absorb transient high voltage, thereby improving the anti-interference capability of the SIM interface J4. The clamping diode 12 can prevent electrostatic discharge or voltage overshoot from damaging the SIM card and Redcap module 1, extending the service life of the device.

[0057] The CPE module also includes a bidirectional voltage level conversion module 14, which is connected to the Redcap module 1 and the serial port module 5 respectively.

[0058] like Figure 11 As shown, the bidirectional voltage level conversion module 14 includes a bidirectional voltage level conversion chip U4 and an LED lamp group 141 connected in sequence, and the bidirectional voltage level conversion chip U4 is connected to the Redcap module 1;

[0059] The bidirectional voltage level conversion chip U4 is used to convert the first voltage level signal output by the Redcap module 1 into a second voltage level signal, or to convert the externally input second voltage level signal into a first voltage level signal and transmit it to the Redcap module 1;

[0060] The LED group 141 is used to indicate the working status of the bidirectional voltage level conversion chip U4.

[0061] The bidirectional voltage level conversion module 14 can realize bidirectional conversion between signals with different voltage levels. In communication equipment, different modules may use different voltage levels (for example, Redcap module 1 uses 1.8V, while external devices use 3.3V). The bidirectional voltage level conversion module 14 can solve the problem of level mismatch and ensure that the signal can be transmitted correctly.

[0062] The bidirectional voltage level conversion chip U4 can automatically convert a signal from one voltage level to another according to the direction of the signal (input or output). The LED group 141 is used to indicate the working status of the bidirectional voltage level conversion chip U4. The Redcap module 1 outputs a first voltage level signal (e.g., 1.8V), and the bidirectional voltage level conversion chip U4 converts the first voltage level signal to a second voltage level signal (e.g., 3.3V) and transmits it to the external device. The external device inputs a second voltage level signal (e.g., 3.3V); the bidirectional voltage level conversion chip U4 converts the second voltage level signal to a first voltage level signal (e.g., 1.8V) and transmits it to the Redcap module 1. The LED group 141 displays the working status of the bidirectional voltage level conversion chip U4 in real time for easy monitoring. The bidirectional voltage level conversion module 14 solves the problem of voltage level mismatch between the Redcap module 1 and the external device, ensuring that the signal can be transmitted correctly. By supporting bidirectional conversion, this module can adapt to devices with different voltage levels, improving the compatibility of the CPE module.

[0063] It should be noted that the Redcap module 1 described in this utility model is prior art, and the improvement of this utility model does not lie in the technology of this module itself.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A CPE module, characterized in that, The system includes a Redcap module, and a SIM card slot, a PHY module, a wireless communication module, and a serial port module, all connected to the Redcap module. The SIM card slot is used to install and connect a SIM card. The PHY module has a built-in RGMII interface. The wireless communication module is used to transmit wireless signals to the Redcap module. The RGMII interface is used for Ethernet communication. The serial port module includes at least one RS485 interface and one RS232 interface for level conversion and communication with external industrial equipment.

2. The CPE module as described in claim 1, characterized in that, The CPE module also includes an antenna interface, a first filter circuit, and an antenna connected in sequence. The antenna interface is connected to the Redcap module, and the first filter circuit is used to realize the signal transmission and frequency tuning of the antenna.

3. The CPE module as described in claim 2, characterized in that, The first filter circuit includes a first inductor, a second inductor, a first capacitor, a second capacitor, and a third capacitor. The first inductor, the first capacitor, and the second capacitor are connected in parallel, forming a PI-type circuit. One end of the second inductor is connected to the antenna interface, and the other end of the second inductor is connected to one end of the third capacitor. The other end of the third capacitor is connected to the antenna.

4. The CPE module as described in claim 1, characterized in that, The Redcap module is also provided with a module interface, which includes a signal light, a first transistor, a second transistor, and a third transistor. The first transistor, the second transistor, and the third transistor are respectively connected to the signal light.

5. The CPE module as described in claim 1, characterized in that, The CPE module also includes a power management module and a step-down DC regulation module. The power management module is connected to the Redcap module, and the input terminal of the step-down DC regulation module is connected to the output terminal of the power management module. The power management module is used to regulate the output voltage of the step-down DC regulation module through a control signal.

6. The CPE module as described in claim 5, characterized in that, The step-down DC regulation module includes a step-down DC regulation chip, a third inductor, a fourth capacitor, and a fifth capacitor. One end of the third inductor is connected to the step-down DC regulation chip, and the other end of the third inductor is connected to the fourth capacitor and the fifth capacitor, respectively. The fourth capacitor and the fifth capacitor are connected in parallel.

7. The CPE module as described in claim 1, characterized in that, The Redcap module is equipped with a SIM interface, which is connected to the SIM card slot.

8. The CPE module as described in claim 7, characterized in that, The SIM interface is connected to several clamping diodes and a second filter circuit. The input terminal of the SIM interface is connected to the input terminal of the second filter circuit, and the second filter circuit is connected to the clamping diodes.

9. The CPE module as described in claim 1, characterized in that, The CPE module also includes a bidirectional voltage level conversion module, which is connected to the Redcap module and the serial port module respectively.

10. The CPE module as described in claim 9, characterized in that, The bidirectional voltage level conversion module includes a bidirectional voltage level conversion chip and an LED group connected in sequence, and the bidirectional voltage level conversion chip is connected to the Redcap module; The bidirectional voltage level conversion chip is used to convert the first voltage level signal output by the Redcap module into a second voltage level signal, or to convert the externally input second voltage level signal into a first voltage level signal and transmit it to the Redcap module; The LED group is used to indicate the operating status of the bidirectional voltage level conversion chip.

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