A w-mbus wireless communication coverage range expansion method, device, equipment and medium

Abstract

This invention provides a method, apparatus, device, gateway, and medium for extending the coverage of W-Mbus wireless communication, comprising: acquiring W-Mbus meter data received by a first radio frequency module, wherein the first radio frequency module receives the W-Mbus meter data using FSK demodulation; preprocessing the W-Mbus meter data to generate relay data and storing the relay data in a data storage module; encoding the relay data to generate W-Mbus relay data, and transmitting the W-Mbus relay data to the gateway through the first radio frequency module. This invention aims to address the limitations of existing W-Mbus technology in terms of transmission distance and weak anti-interference capabilities, and the increased link overhead and relay deployment costs associated with using multi-hop relays for data acquisition and forwarding for meters at longer distances.

Description

Technical Field

[0001] This invention relates to the field of low-power wide-area network technology, specifically to a method, apparatus, device, and medium for extending the coverage of W-MBUS wireless communication. Background Technology

[0002] The wireless M-Bus standard (EN13757-4:2005 and 2012) defines the radio frequency communication link between water meters, gas meters, heat meters, and electricity meters and data collection devices. This standard is currently widely accepted in the European market for smart metering or advanced meter reading infrastructure (AMI) applications.

[0003] The availability of low-cost radio modules makes it possible to read meter data using radio communication. Many meters are battery-powered and subject to very tight power budgets and regulatory requirements, limiting transmission power levels and thus the useful distance between transmitter and receiver. The use of reinforced concrete, conductive surface coatings, and underground placement of meters, such as in building recesses and basements, exacerbates the problem of direct communication between data collection units and meters; this limits the usable size of radio networks unless relays or repeaters are used. Relays can increase the effective size of the network by forwarding some node data, making radio-based networks a more cost-effective solution.

[0004] The standard W-Mbus technology currently on the market, even with the addition of relays, has limited data reception sensitivity (around -100dB) due to its use of FSK modulation. This results in limited transmission distance and weak anti-interference capabilities. Furthermore, when using multi-hop relays for data collection and forwarding for meters at longer distances, this increases link overhead and relay deployment costs to some extent.

[0005] In view of the above, this application is hereby submitted. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a method, apparatus, device, gateway and medium for extending the coverage of W-Mbus wireless communication, which can effectively solve the problems of limited transmission distance and weak anti-interference capability of W-Mbus technology in the prior art. When using multi-hop relays for data collection and forwarding for meters at longer distances, there is a certain degree of increased link overhead and relay deployment cost.

[0007] This invention discloses a method for extending the coverage of W-MBUS wireless communication, comprising:

[0008] The first radio frequency module receives the w-mbus meter data, wherein the first radio frequency module receives the w-mbus meter data using FSK demodulation.

[0009] The w-mbus meter data is preprocessed to generate relay data, and the relay data is stored in the data storage module;

[0010] The relay data is encoded to generate W-Mbus relay data, and then transmitted to the gateway via the first radio frequency module.

[0011] Preferably, the w-mbus meter data is preprocessed to generate relay data, specifically as follows:

[0012] The w-mbus meter data is subjected to FSK demodulation processing to generate demodulated data;

[0013] The demodulated data is subjected to W-Mbus information decoding processing to generate decoded data;

[0014] The decoded data is processed to generate relay data.

[0015] Preferably, the relay data is encoded to generate W-MBUS relay data, and the W-MBUS relay data is transmitted to the gateway through the first radio frequency module, specifically as follows:

[0016] The relay data is processed by W-MBUS information encoding to generate encoded data;

[0017] The encoded data is modulated to generate W-MBUS relay data, wherein the modulation process includes spread spectrum modulation.

[0018] The W-MBUS relay data is transmitted to the gateway via the first radio frequency module.

[0019] This invention also discloses a method for extending the coverage of W-MBUS wireless communication, comprising:

[0020] Open the first receiving channel of the second radio frequency module and determine whether the preamble of the w-mbus meter data transmitted by the first radio frequency module is detected. The first receiving channel is used to receive traditional w-mbus meter data or w-mbus relay data using FSK modulation.

[0021] If so, the W-MBUS relay data is received via the second radio frequency module;

[0022] If not, close the first receiving channel of the second radio frequency module and open the second receiving channel of the second radio frequency module.

[0023] Preferably, after opening the second receiving channel of the second radio frequency module, the method further includes:

[0024] Determine whether the preamble of the W-Mbus relay data transmitted by the first radio frequency module is detected, wherein the second receiving channel is used to receive W-Mbus relay data using spread spectrum modulation.

[0025] If so, the W-MBUS relay data is received via the second radio frequency module;

[0026] If not, close the second receiving channel of the second radio frequency module and reopen the second receiving channel of the first radio frequency module to make a judgment.

[0027] The present invention also discloses a W-MBUS wireless communication coverage extension device, comprising:

[0028] The meter data acquisition unit is used to acquire the w-mbus meter data received by the first radio frequency module, wherein the first radio frequency module receives the w-mbus meter data using the FSK demodulation method.

[0029] The meter data processing unit is used to preprocess the w-mbus meter data, generate relay data, and store the relay data in the data storage module;

[0030] The meter data transmission unit is used to encode the relay data, generate w-mbus relay data, and transmit the w-mbus relay data to the gateway through the first radio frequency module.

[0031] The present invention also discloses a W-MBUS wireless communication coverage extension device, comprising:

[0032] The meter data judgment unit is used to open the first receiving channel of the second radio frequency module and determine whether the preamble of the w-mbus meter data transmitted by the first radio frequency module is detected. The first receiving channel is used to receive traditional w-mbus meter data or w-mbus relay data using FSK modulation.

[0033] The meter data receiving unit is used to receive the w-mbus relay data through the second radio frequency module;

[0034] The receiving channel switching unit is used to turn off the first receiving channel of the second radio frequency module and turn on the second receiving channel of the second radio frequency module.

[0035] The present invention also discloses a W-MBUS wireless communication coverage extension device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the W-MBUS wireless communication coverage extension method as described above.

[0036] The present invention also discloses a gateway, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the w-mbus wireless communication coverage extension method as described in any of the above.

[0037] The present invention also discloses a readable storage medium storing a computer program that can be executed by a processor of the device in which the storage medium is located, to implement the w-mbus wireless communication coverage extension method as described in any of the above claims.

[0038] In summary, the W-Mbus wireless communication coverage extension method, apparatus, device, gateway, and medium provided in this embodiment, during operation, change the modulation method to spread spectrum modulation when relaying data. This integrates digital spread spectrum and digital signal processing technologies, enabling relayed data to be transmitted over longer distances without increasing relay power consumption. The gateway also exhibits high receiving sensitivity, ensuring reliable network connectivity. This addresses the limitations of existing W-Mbus technology in terms of transmission distance and weak anti-interference capabilities. Furthermore, when using multi-hop relays for data collection and forwarding at greater distances, it increases link overhead and relay deployment costs to some extent. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the first process of the method for extending the coverage of W-MBUS wireless communication provided in an embodiment of the present invention.

[0040] Figure 2 This is a schematic diagram of the structure of the w-mbus wireless communication coverage extension method provided in the embodiment of the present invention.

[0041] Figure 3 This is a schematic diagram of the framework structure of the w-mbus wireless communication coverage extension method provided in the embodiments of the present invention.

[0042] Figure 4 This is a schematic diagram of the relay process for the w-mbus wireless communication coverage extension method provided in this embodiment of the invention.

[0043] Figure 5 This is a schematic diagram of the second process of the method for extending the coverage of W-MBUS wireless communication provided in an embodiment of the present invention.

[0044] Figure 6 This is a schematic diagram of the gateway process for the w-mbus wireless communication coverage extension method provided in this embodiment of the invention.

[0045] Figure 7 This is a schematic diagram of the first module of the w-mbus wireless communication coverage extension device provided in an embodiment of the present invention.

[0046] Figure 8 This is a schematic diagram of the second module of the w-mbus wireless communication coverage extension device provided in an embodiment of the present invention. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] This invention discloses a method, apparatus, device, gateway, and medium for extending the coverage of W-MBUS wireless communication, which at least partially addresses the shortcomings of existing technologies.

[0050] Please see Figure 1 The first embodiment of the present invention provides a method for extending the coverage of W-MBUS wireless communication, which can be executed by a W-MBUS wireless communication coverage extension device (hereinafter referred to as the first extension device), and in particular by one or more processors within the first extension device, to achieve the following steps:

[0051] S101, acquire the w-mbus meter data received by the first radio frequency module, wherein the first radio frequency module receives the w-mbus meter data using FSK demodulation method;

[0052] In this embodiment, the first extended device may be a user terminal device (such as a smartphone, smart computer, or other smart device), which can establish a communication connection with the cloud gateway to achieve data interaction.

[0053] The standard W-Mbus technology currently on the market, even with the addition of relays, has limited data reception sensitivity (around -100dB) due to its use of FSK modulation. This results in limited transmission distance and weak anti-interference capabilities. Furthermore, when using multi-hop relays for data collection and forwarding for meters at longer distances, this increases link overhead and relay deployment costs to some extent.

[0054] Please see Figures 2 to 4 Specifically, in this embodiment, the system using the w-mbus wireless communication coverage extension method includes three components: a meter AE, a relay KL, and a gateway Z. The relay KL is the first extension device. The first extension device includes an SX1262 RF chip, a data storage module, a battery module, a low-power module, and an MCU processor. The SX1262 RF chip and the MCU transmit data via the SPI protocol. When the w-mbus meter AE is in C1 operating mode, the bandwidth is 200kbps, the data rate is 100kb / s, and the preamble is 32 bits. The AE meter encodes the application data according to the w-mbus protocol specification, with different encoding rules used for different operating modes. The first RF module receives the encoded w-mbus meter data using FSK demodulation.

[0055] S102, preprocess the w-mbus meter data to generate relay data, and store the relay data in the data storage module;

[0056] Specifically, step S102 includes: performing FSK demodulation processing on the w-mbus meter data to generate demodulated data;

[0057] The demodulated data is subjected to W-Mbus information decoding processing to generate decoded data;

[0058] The decoded data is processed to generate relay data.

[0059] S103, the relay data is encoded to generate w-mbus relay data, and the w-mbus relay data is transmitted to the gateway through the first radio frequency module.

[0060] Specifically, step S103 includes: performing W-MBUS information encoding processing on the relay data to generate encoded data;

[0061] The encoded data is modulated to generate W-MBUS relay data, wherein the modulation process includes spread spectrum modulation.

[0062] The W-MBUS relay data is transmitted to the gateway via the first radio frequency module.

[0063] Specifically, in this embodiment, the first radio frequency module in the relay of the first extended device receives the encoded w-mbus meter data via FSK demodulation. When the data reception is complete, the relay decodes the w-mbus information, processes the decoded raw data, and stores it in a buffer. Subsequently, the relay randomly delays for 200-2000 milliseconds and encodes the data in the buffer using w-mbus. Finally, when transmitting data, since FSK requires a signal power of 8-10dB in terms of noise floor for normal modulation, and spread spectrum modulation has a strong anti-interference capability of 20dB against co-channel GMSK interference signals, the modulation method of the first radio frequency module can be spread spectrum modulation, with a bandwidth of 125K, a spreading factor of 12, and a 32-bit preamble. The modulation method of the first radio frequency module can also be FSK modulation, and the modulation method used can be adjusted according to the actual situation.

[0064] In this embodiment, the spread spectrum relay L uses FSK modulation when receiving data and spread spectrum modulation when transmitting data; simultaneously, the relay L operates in low-power mode. It should be noted that the relay L is not limited to forwarding meter data in C1 operating mode; it is also applicable to forwarding meter data in S1, S2, T1, T2, C2, and other operating modes. The relay L increases the data transmission distance and improves data anti-interference by changing the RF modulation method, RF bandwidth, and spreading factor to forward W-MBUS meter data to the gateway.

[0065] Please see Figures 5 to 6 The second embodiment of the present invention provides a method for extending the coverage of W-MBus wireless communication, which can be executed by a wireless communication coverage extension device (hereinafter referred to as the second extension device), and in particular, by one or more processors within the second extension device, to achieve the following steps:

[0066] S201, open the first receiving channel of the second radio frequency module, and determine whether the preamble of the w-mbus meter data transmitted by the first radio frequency module is detected. The first receiving channel is used to receive traditional w-mbus meter data or w-mbus relay data using FSK modulation.

[0067] In this embodiment, the second extended device may be a gateway located in the cloud, which can establish a communication connection with user terminal devices (such as smartphones, smart computers or other smart devices) to realize data interaction.

[0068] Specifically, in this embodiment, the gateway may store parameters for communication. The user terminal can switch the receiving channel corresponding to the preamble by sending a preamble of meter data to the gateway in order to receive the meter data sent by the user terminal.

[0069] S202, if so, receive the w-mbus relay data through the second radio frequency module;

[0070] S203, if not, close the first receiving channel of the second radio frequency module and open the second receiving channel of the second radio frequency module.

[0071] In one possible embodiment of the present invention, after opening the second receiving channel of the second radio frequency module, the method further includes:

[0072] S204, determine whether the preamble of the W-Mbus relay data transmitted by the first radio frequency module is detected, wherein the second receiving channel is used to receive W-Mbus relay data using spread spectrum modulation.

[0073] S205, if so, receive the w-mbus relay data through the second radio frequency module;

[0074] S206, If not, close the second receiving channel of the second radio frequency module and reopen the second receiving channel of the first radio frequency module to make a judgment.

[0075] Specifically, in this embodiment, the second receiving channel is used to receive W-MBUS relay data using spread spectrum modulation, i.e., improved relay data. The system using the W-MBUS wireless communication coverage extension method comprises three components: a meter AE, a relay KL, and a gateway Z. The gateway Z is the second extension device. The second extension device includes an SX1262 RF chip, a data storage module, a battery module, a low-power module, and an MCU processor. The SX1262 RF chip and the MCU transmit data via the SPI protocol. In use, the gateway of the second extension device first opens a 16-bit FSK receiving window, i.e., the first receiving channel. If a preamble is detected, FSK meter data can be received. If no preamble is detected in the FSK receiving window, an 8-bit spread spectrum receiving window, i.e., the second receiving channel, is opened. If a preamble is detected, the meter data forwarded by the spread spectrum relay can be received. If no preamble is detected in the spread spectrum receiving window, the FSK receiving window is repeatedly opened for reception and detection.

[0076] In this embodiment, when gateway Z, i.e., the second extension device, detects the spread spectrum preamble of relay L from the first extension device, the gateway Z sets its receive channel modulation mode to spread spectrum modulation, its communication parameters are consistent with the relay L's transmission parameters, and it receives relay data. At this time, the gateway's receiving sensitivity can reach -137dB, and the receiving distance can reach 3 kilometers. When gateway Z detects the FSK preamble of relay K from the first extension device, the gateway's receive channel modulation mode is set to FSK modulation, and it receives relay K's data. At this time, the gateway's receiving sensitivity can reach -104dB, and the receiving distance can reach 1 kilometer.

[0077] In simple terms, the RF module of gateway Z, i.e., the second RF module, uses two receiving channels with different modulation schemes and communication parameters. The FSK modulation scheme can receive existing W-Mbus relay or W-Mbus meter data, while the spread spectrum modulation scheme can receive improved spread spectrum relay data. The RF module is communicatively connected to the W-Mbus gateway, and the W-Mbus gateway is electrically connected to the RF chip communication chip. Gateway Z uses a time-division multiplexing method to poll the two receiving channels, ensuring the reliability of the network connection.

[0078] In summary, the original W-Mbus method in the prior art uses FSK modulation for both transmission and reception in the relay K, resulting in limited data transmission distance and weak anti-interference capabilities. In contrast, the proposed W-Mbus wireless communication coverage extension method uses spread spectrum modulation in the relay L during data transmission, significantly increasing the communication distance with the same power consumption, while also exhibiting good anti-Doppler shift capabilities. Furthermore, the gateway Z in the proposed W-Mbus wireless communication coverage extension method uses time-division multiplexing technology to utilize two receiving channels, further enhancing system applicability. In short, the proposed W-Mbus wireless communication coverage extension method features low cost, low power consumption, long transmission distance, and strong anti-interference capabilities; it not only solves the contradiction between power consumption and limited transmission range in the existing W-Mbus technology, but also improves gateway receiving sensitivity and anti-interference capabilities, while reducing relay deployment costs.

[0079] Please see Figure 7 The third embodiment of the present invention provides a w-mbus wireless communication coverage extension device, comprising:

[0080] Meter data acquisition unit 101 is used to acquire w-mbus meter data received by the first radio frequency module, wherein the first radio frequency module receives the w-mbus meter data using FSK demodulation.

[0081] Meter data processing unit 102 is used to preprocess the w-mbus meter data, generate relay data, and store the relay data in the data storage module;

[0082] Meter data transmission unit 103 is used to encode the relay data, generate w-mbus relay data, and transmit the w-mbus relay data to the gateway through the first radio frequency module.

[0083] Please see Figure 8 The fourth embodiment of the present invention provides a w-mbus wireless communication coverage extension device, comprising:

[0084] Meter data judgment unit 201 is used to open the first receiving channel of the second radio frequency module and determine whether the preamble of the w-mbus meter data transmitted by the first radio frequency module is detected. The first receiving channel is used to receive traditional w-mbus meter data or w-mbus relay data using FSK modulation.

[0085] Meter data receiving unit 202 is used to receive the w-mbus relay data through the second radio frequency module;

[0086] The receiving channel switching unit 203 is used to turn off the first receiving channel of the second radio frequency module and turn on the second receiving channel of the second radio frequency module.

[0087] The fifth embodiment of the present invention provides a W-MBUS wireless communication coverage extension device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the W-MBUS wireless communication coverage extension method as described in any of the above embodiments.

[0088] A sixth embodiment of the present invention provides a gateway, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the w-mbus wireless communication coverage extension method as described in any of the above embodiments.

[0089] The seventh embodiment of the present invention provides a readable storage medium storing a computer program that can be executed by a processor of the device in which the storage medium is located, to implement the w-mbus wireless communication coverage extension method as described in any of the above embodiments.

[0090] Exemplary examples show that the computer program described in the fifth, sixth, and seventh embodiments of the present invention can be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules can be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in the device for extending the coverage of W-MBUS wireless communication. For example, the apparatus described in the third and fourth embodiments of the present invention.

[0091] The processor referred to can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. This processor is the control center of the w-mbus wireless communication coverage extension method, connecting various parts of the method through various interfaces and lines.

[0092] The memory can be used to store the computer program and / or modules. The processor, by running or executing the computer program and / or modules stored in the memory, and by calling the data stored in the memory, realizes various functions of the W-MBUS wireless communication coverage extension method. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, text conversion function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, text message data, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0093] If the implemented module is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0094] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0095] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A method for extending the coverage of W-MBus wireless communication, characterized in that, Applied to the first extended device, including: The first radio frequency module receives the w-mbus meter data, wherein the first radio frequency module receives the w-mbus meter data using FSK demodulation. The w-mbus meter data is preprocessed to generate relay data, and the relay data is stored in the data storage module; The relay data is encoded to generate W-MBUS relay data, and then transmitted to the gateway via the first radio frequency module. Specifically: The relay data is processed by W-MBUS information encoding to generate encoded data; The encoded data is modulated to generate W-Mbus relay data, wherein the modulation process includes spread spectrum modulation; Applied to a second expansion device, including: Open the first receiving channel of the second radio frequency module and determine whether the preamble of the w-mbus meter data transmitted by the first radio frequency module is detected. The first receiving channel is used to receive traditional w-mbus meter data or w-mbus relay data using FSK modulation. If so, the W-MBUS relay data is received via the second radio frequency module; If not, the first receiving channel of the second radio frequency module is turned off, and the second receiving channel of the second radio frequency module is turned on, wherein the second receiving channel is used to receive W-Mbus relay data using spread spectrum modulation.

2. The method for extending the coverage of W-MBUS wireless communication according to claim 1, characterized in that, The w-mbus meter data is preprocessed to generate relay data, specifically as follows: The w-mbus meter data is subjected to FSK demodulation processing to generate demodulated data; The demodulated data is subjected to W-Mbus information decoding processing to generate decoded data; The decoded data is processed to generate relay data.

3. The method for extending the coverage of W-MBUS wireless communication according to claim 1, characterized in that, After opening the second receive channel of the second radio frequency module, the following is also included: Determine whether the preamble of the W-MBus relay data transmitted by the first radio frequency module has been detected; If so, the W-MBUS relay data is received via the second radio frequency module; If not, close the second receiving channel of the second radio frequency module and reopen the first receiving channel of the second radio frequency module to make a judgment.

4. A W-MBUS wireless communication coverage extension device, characterized in that, Applied to the first extended device, including: The meter data acquisition unit is used to acquire the w-mbus meter data received by the first radio frequency module, wherein the first radio frequency module receives the w-mbus meter data using the FSK demodulation method. The meter data processing unit is used to preprocess the w-mbus meter data, generate relay data, and store the relay data in the data storage module; The meter data transmission unit is used to encode the relay data, generate W-MBUS relay data, and transmit the W-MBUS relay data to the gateway through the first radio frequency module. Specifically: The relay data is processed by W-MBUS information encoding to generate encoded data; The encoded data is modulated to generate W-MBUS relay data, wherein the modulation process includes spread spectrum modulation. Applied to a second expansion device, including: Open the first receiving channel of the second radio frequency module and determine whether the preamble of the w-mbus meter data transmitted by the first radio frequency module is detected. The first receiving channel is used to receive traditional w-mbus meter data or w-mbus relay data using FSK modulation. The meter data receiving unit is used to receive the w-mbus relay data through the second radio frequency module; The receiving channel switching unit is used to turn off the first receiving channel of the second radio frequency module and turn on the second receiving channel of the second radio frequency module, wherein the second receiving channel is used to receive W-Mbus relay data using spread spectrum modulation.

5. A W-MBUS wireless communication coverage extension device, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the w-mbus wireless communication coverage extension method as described in any one of claims 1 to 3.

6. A readable storage medium, characterized in that, The storage medium contains a computer program that can be executed by a processor of the device in which the storage medium is located, to implement the w-mbus wireless communication coverage extension method as described in any one of claims 1 to 3.

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