CN114125726A - Information piggybacking device, system and method for wide area Internet of things in mMTC (machine type communication) background - Google Patents
Information piggybacking device, system and method for wide area Internet of things in mMTC (machine type communication) background Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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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
- H04W88/16—Gateway arrangements
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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
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- 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
A wide area Internet of things information piggybacking device, system and method under the mMTC background relates to the technical field of wireless communication. The problem of massive sensing information access of low-speed and time-delay insensitive services in remote areas exists under the mMTC background. The piggybacking method comprises the following steps: in the sending mode, the data query instruction is periodically circulated and sent to the LoRa gateway node; broadcasting the data query instruction by the LoRa gateway node; receiving data in a receiving mode; when data returned by the sensor are received, setting the working mode to be a receiving mode, and storing the data; in a data storage mode, writing the received sensor return data into an SD card, if the data is successfully stored, starting a 5G access base station available unit, and then setting a working mode to be a sending mode; if the storage fails, the working mode is set to be a sending mode; the STM32 control system sends the data of the SD card to the 5G module through the serial communication port. The invention has stronger covering capability and is suitable for remote areas.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to the field of a wide area internet of things access device based on mobile piggybacking.
Background
Since 5G commercial in 2019, the communication (Machine to Machine, M2M) service between machines is increased in a large amount, and the Internet of things industry is developed rapidly. By means of high data rate and massive access support provided by a 5G network, a series of application scenes centered on improving user life experience, such as intelligent transportation, smart home and the like, appear, and the human society trends to a more intelligent road. However, in wide non-urban hot spot areas, there are still a great number of sensors with access requirements, such as environmental monitoring, wildlife protection, road and bridge monitoring, and the like, the emphasis of these services is often not related to improving the experience rate of users, their data rates are usually low, it is not necessary to frequently establish communication connections, and lower cost, power consumption and longer coverage distance are pursued. mMTC (mass machine communication) is used as one of three 5G application scenes, the key point is oriented to the application scene which takes sensor information acquisition as a target, and the method has the characteristics of low-speed time delay non-sensitivity and mass multi-connection.
For the problem of network access of massive sensing information, the traditional solution mainly adopts a multi-hop routing technology, and realizes network coverage by constructing a certain number of base stations as relay nodes. However, due to the fact that the distance between wireless sensor network nodes is long, the transmitting power is limited and the wireless sensor network nodes are usually outside the coverage range of a 5G network in the mMTC background, wide-area Internet of things coverage is achieved by building a base station, the infrastructure investment cost is increased undoubtedly, and the development cycle of the Internet of things is prolonged.
The problem that the coverage of a base station in the traditional network architecture is small and the wide area coverage can only be realized by increasing the distribution density of the base station is solved by the conventional public technology CN113365281A 'a 5G wide area internet of things network architecture based on mobile satellite and a data transmission method thereof', so that the problems of expensive distribution cost, insufficient coverage and high operation power consumption of the conventional 5G network aiming at the networking of massive terminals are caused, and a mobile forwarding node provided by the network architecture can be closer to a user terminal, so that the power consumption expense caused by the access of the terminal can be effectively reduced theoretically; however, the scheme is combined with intelligent wearable services, and the method cannot be applied to remote areas such as highways, rural areas, deserts, suburbs and the like, and cannot solve the problem of massive low-rate and time-delay insensitive services.
Disclosure of Invention
The invention solves the problem of access of massive low-rate and time-delay insensitive services in remote areas such as expressways, rural areas, deserts, suburbs and the like under the mMTC background.
A wide area thing networking information piggybacks device under mMTC background includes:
the system comprises a Lora gateway, an STM32 control system and a 5G module;
the LoRa gateway is connected with an STM32 control system through an RS232 serial interface, and the STM32 control system is connected with a 5G module through an RS232 serial interface;
the STM32 control system is embedded with a computer software-implemented module, and the module comprises:
the sending unit is used for sending the data query instruction to the LoRa gateway node in a fixed cycle in a hexadecimal data form in a sending mode;
a unit for sending a broadcast instruction, configured to broadcast a data query instruction passing through an LoRa gateway node;
a receiving unit for receiving data in a receiving mode;
the working mode adjusting unit is used for setting the working mode to be a receiving mode and starting the data storage unit when receiving the data returned by the sensor;
the data storage unit is used for writing the received sensor return data into the SD card, if the data is successfully stored, the 5G access base station available unit is started, and then the working mode is set to be a sending mode; if the storage fails, the working mode is set to be a sending mode;
and the 5G access base station available unit is used for transmitting the data stored in the SD card to the 5G module through the serial communication port.
Further, the reception mode is PG8 ═ 0; the transmission mode is PG8 ═ 1.
Further, the piggybacking device further comprises a power module for supplying power to each module in the device.
Furthermore, the power module adopts a lithium battery or an alternating current power supply.
A wide area thing networking information piggybacks system under mMTC background includes: the system comprises a piggybacking device, a plurality of data acquisition sensor nodes and a core network;
the piggybacking apparatus comprising: the LoRa gateway is connected with an STM32 control system through an RS232 serial interface, and the STM32 control system is connected with a 5G module through an RS232 serial interface;
the data acquisition sensor nodes are connected with LoRa gateway nodes in the piggyback device through a LoRa network, and data interaction is realized between a sensor data acquisition end and a LoRa data transmission terminal;
and the core network is connected with a 5G module in the piggybacking device to realize data interaction.
Further, the communication protocol of the sensor adopts RS485-MODBUS-RTU, and the default baud rate is 9600, 8, n and 1.
Further, the piggyback system further comprises an initialization serial port, wherein the baud rate of the initialization serial port is 9600, the word length is 8 bits, no parity bit exists, and 1 stop bit is provided.
Further, the parameter configuration of the LoRa gateway node includes:
the configuration server type is a serial server, the networking mode is a networking transparent transmission mode, and the mode is configured as networking broadcasting.
Further, the configuration of the LoRa data transmission terminal includes:
the baud rate is 9600, the check bit is none, the data bit is 8, and the stop bit is 1.
A wide area Internet of things information piggybacking method in an mMTC background comprises the following steps:
the RS232 interface is arranged in a sending mode, and the data query instruction is sent to the LoRa gateway node in a hexadecimal data form timing cycle mode;
broadcasting the data query instruction by the LoRa gateway node;
the RS232 is serially arranged in a receiving mode to receive data;
when data returned by the sensor are received, setting the working mode to be a receiving mode, and storing the data;
in a data storage mode, writing the received sensor return data into an SD card, if the data is successfully stored, starting a 5G access base station available unit, and then setting a working mode to be a sending mode; if the storage fails, the working mode is directly set to be a sending mode;
the STM32 control system sends the data stored by the SD card to the 5G module through the serial communication port.
The invention has the beneficial effects that:
the invention solves the problem of access of massive low-rate and time-delay insensitive services in remote areas such as expressways, rural areas, deserts, suburbs and the like under the mMTC background.
The invention supports the low-speed time delay non-sensitive service 5G access in suburb areas and realizes the real interconnection of everything. A reference-value implementation is provided. The main effects obtained are as follows:
(1) a mobile hardware device implementation scheme is provided, and the base station construction cost is greatly reduced.
(2) According to the characteristics of low-speed time delay non-sensitive services, common vehicles can be used as mobile carriers, preferably private cars, buses, trains and the like. The piggyback device has the information acquisition and piggyback functions and only needs a vehicle to supply power. Can utilize cigar lighter or all kinds of power source on the car, connect a voltage converter can, carry out the noninductive of information and take incidentally, reduce the basic station energy consumption and 5G basic station and lay the density.
(3) In the case of the LoRa technology, the communication distance may reach at least 2km in urban areas and 5km in suburban areas with relatively few buildings. The piggybacking device has strong covering capability and can be well applied to mMTC scenes.
(4) Due to the fact that the memory space of the piggybacking device is large, a large amount of time delay non-sensitive services can be piggybacked, compared with a common wide area sensor node, the time delay requirement is high, and the access time is sensitive.
(5) In the hardware level, the invention can realize classification and piggybacking of different services through different broadcast instructions, and can piggyback different information according to the moving characteristics of different vehicles.
Different low power wan technologies such as NB-IoT, Sigfox and LoRa may be used depending on the application scenario and traffic requirements. Therefore, the wide-area internet of things information piggybacking device is completely feasible on a hardware level and has great application value.
Drawings
Fig. 1 is a schematic diagram of a wide area internet of things information piggybacking device in an mtc background.
Fig. 2 is a flowchart of a wide area internet of things information piggybacking device software work flow in an mtc context.
Fig. 3 is a work flow diagram of a wide area internet of things information piggybacking system in an mtc background.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.
First embodiment this embodiment is described with reference to fig. 1 and 2. In this embodiment, a wide area internet of things information piggybacking device in an mtc background includes:
the system comprises a Lora gateway, an STM32 control system and a 5G module;
the LoRa gateway is connected with an STM32 control system through an RS232 serial interface, and the STM32 control system is connected with a 5G module through an RS232 serial interface;
the STM32 control system is embedded with a computer software-implemented module, and the module comprises:
the sending unit is used for sending the data query instruction to the LoRa gateway node in a fixed cycle in a hexadecimal data form in a sending mode;
a unit for sending a broadcast instruction, configured to broadcast a data query instruction passing through an LoRa gateway node;
a receiving unit for receiving data in a receiving mode;
the working mode adjusting unit is used for setting the working mode to be a receiving mode and starting the data storage unit when receiving the data returned by the sensor;
the data storage unit is used for writing the received sensor return data into the SD card, if the data is successfully stored, the 5G access base station available unit is started, and then the working mode is set to be a sending mode; if the storage fails, the working mode is set to be a sending mode;
and the 5G access base station available unit is used for sending the data of the SD card to the 5G module through the serial communication port.
In this embodiment, as shown in fig. 1, in a 5G non-coverage area, the Lora gateway acquires sensor data by establishing a communication connection with an STM32 control system, stores the sensor data, and unloads sensing information by the piggybacked node when the node enters the 5G coverage area along with the movement of the node, thereby implementing a 5G access function.
Second embodiment this embodiment is described with reference to fig. 2. The present embodiment is further limited to the wide area internet of things information piggybacking device in the mtc context in the first embodiment, wherein the receiving mode is PG8 ═ 0; the transmission mode is PG8 ═ 1.
In the sending mode, the data query command is sent to the LoRa gateway node in a form of hexadecimal data (010300000001840A) in a timing loop, and the sending time interval and the broadcast command content can be changed by themselves.
In the present embodiment, the data read, address modification, baud rate modification, etc. operations performed on the sensor are all based on 16-ary instructions.
In a third embodiment, the present embodiment further defines the wide area internet of things information piggybacking device in the mtc context in the first embodiment, and the piggybacking device further includes a power module for supplying power to each module in the device.
In a fourth embodiment, the present embodiment further defines the wide area internet of things information piggybacking device in the mtc context of the first embodiment, and the power module employs a lithium battery or an ac power supply.
Fifth embodiment, referring to fig. 3 to illustrate the embodiment, the wide area internet of things information piggybacking system in the mtc background includes: the system comprises a piggybacking device, a plurality of data acquisition sensor nodes and a core network;
the piggybacking apparatus comprising: the LoRa gateway is connected with an STM32 control system through an RS232 serial interface, and the STM32 control system is connected with a 5G module through an RS232 serial interface;
the data acquisition sensor nodes are connected with LoRa gateway nodes in the piggyback device through a LoRa network, and data interaction is realized between a sensor data acquisition end and a LoRa data transmission terminal;
and the core network is connected with a 5G module in the piggybacking device to realize data interaction.
In this embodiment, a LoRa gateway (USR-LG210-L) is adopted, the coverage distance of which can reach 10-20km generally, and compared with other wireless transmission methods such as bluetooth and Zigbee, the low power consumption and long propagation distance can accommodate 200 nodes simultaneously. At the sensor information acquisition end, a corresponding LoRa data transmission terminal (USR-LG206-L-C-H10) needs to be equipped to realize the information acquisition function.
Sixth embodiment this embodiment is described with reference to fig. 3. The embodiment is a further limitation on the wide-area internet of things information piggybacking system in the mtc background described in the fifth embodiment, a communication protocol of the sensor adopts RS485-MODBUS-RTU, and a default baud rate is 9600, 8, n, 1.
In this embodiment, the RS485-MODBUS-RTU is adopted as the communication protocol, so that the system operates stably and the communication rate is high.
Seventh embodiment this embodiment is described with reference to fig. 3. The embodiment further defines the wide area internet of things information piggybacking system under the mtc background in the fifth embodiment, where the piggybacking system further includes an initialization serial port, and the baud rate of the initialization serial port is 9600, the word length is 8 bits, no parity bit, and 1 stop bit.
Example eight this example is illustrated with reference to figure 3. The embodiment is further limited to the wide area internet of things information piggybacking system in the mtc context described in the fifth embodiment, where the parameter configuration of the LoRa gateway node includes:
the configuration server type is a serial server, the networking mode is a networking transparent transmission mode, and the mode is configured as networking broadcasting; channel 1 is 470MHZ and channel 2 is 475 MHZ.
The configuration of the LoRa data transmission terminal comprises the following steps: the baud rate is 9600, the check bit is none, the data bit is 8, and the stop bit is 1.
In this embodiment, the networking mode and the channel selection need to be consistent with those of the gateway node, so as to realize the wireless transmission function of the piggyback system.
The ninth embodiment provides a wide area internet of things information piggybacking method in an mtc background, including:
the RS232 interface is arranged in a sending mode, and the data query instruction is sent to the LoRa gateway node in a hexadecimal data form timing cycle mode;
broadcasting the data query instruction by the LoRa gateway node;
the RS232 is serially arranged in a receiving mode to receive data;
when data returned by the sensor are received, setting the working mode to be a receiving mode, and storing the data;
in a data storage mode, writing the received sensor return data into an SD card, if the data is successfully stored, starting a 5G access base station available unit, and then setting a working mode to be a sending mode; if the storage fails, the working mode is set to be a sending mode;
the STM32 control system sends the data of the SD card to the 5G module through the serial communication port.
The piggybacking method described in this embodiment supports low-delay non-sensitive service 5G signal access in suburban areas.
Claims (10)
- A wide area thing networking information piggybacks device under mMTC background, its characterized in that includes:the system comprises a Lora gateway, an STM32 control system and a 5G module;the LoRa gateway is connected with an STM32 control system through an RS232 serial interface, and the STM32 control system is connected with a 5G module through an RS232 serial interface;the STM32 control system is embedded with a computer software-implemented module, and the module comprises:the sending unit is used for sending the data query instruction to the LoRa gateway node in a fixed cycle in a hexadecimal data form in a sending mode;a unit for sending a broadcast instruction, configured to broadcast a data query instruction passing through an LoRa gateway node;a receiving unit for receiving data in a receiving mode;the working mode adjusting unit is used for setting the working mode to be a receiving mode and starting the data storage unit when receiving the data returned by the sensor;the data storage unit is used for writing the received sensor return data into the SD card, if the data is successfully stored, the 5G access base station available unit is started, and then the working mode is set to be a sending mode; if the storage fails, the working mode is set to be a sending mode;and the 5G access base station available unit is used for sending the data of the SD card to the 5G module through the serial communication port.
- 2. The mMTC system of claim 1, wherein the reception mode is PG8 ═ 0; the transmission mode is PG8 ═ 1.
- 3. The mMTC device-based wide area Internet of things information piggybacking device of claim 1, further comprising a power module for powering each module in the device.
- 4. The mMTC device-based wide area Internet of things information piggybacking device of claim 3, wherein the power module is a lithium battery or an AC power supply.
- A wide area Internet of things information piggybacking system in an mMTC background, comprising: the system comprises a piggybacking device, a plurality of data acquisition sensor nodes and a core network;the piggybacking apparatus comprising: the LoRa gateway is connected with an STM32 control system through an RS232 serial interface, and the STM32 control system is connected with a 5G module through an RS232 serial interface;the data acquisition sensor nodes are connected with LoRa gateway nodes in the piggyback device through a LoRa network, and data interaction is realized between a sensor data acquisition end and a LoRa data transmission terminal;and the core network is connected with a 5G module in the piggybacking device to realize data interaction.
- 6. The mMTC system of claim 5, wherein a communication protocol of the sensor is RS485-MODBUS-RTU, and a default baud rate is 9600, 8, n, 1.
- 7. The wide-area internet of things information piggybacking system in an mtc background according to claim 5, further comprising an initialization serial port, wherein the baud rate of the initialization serial port is 9600, the word length is 8 bits, no parity bit, and 1 stop bit.
- 8. According to claim5The wide area internet of things information piggybacking system under the mMTC background is characterized in that the parameter configuration of the LoRa gateway node comprises the following steps:the configuration server type is a serial server, the networking mode is a networking transparent transmission mode, and the mode is configured as networking broadcasting.
- 9. The mMTC system of claim 5, wherein the LoRa data transmission terminal configuration comprises:the baud rate is 9600, the check bit is none, the data bit is 8, and the stop bit is 1.
- 10, a wide area internet of things information piggybacking method in an mMTC background, comprising:the RS232 interface is arranged in a sending mode, and the data query instruction is sent to the LoRa gateway node in a hexadecimal data form timing cycle mode;broadcasting the data query instruction by the LoRa gateway node;the RS232 is serially arranged in a receiving mode to receive data;when data returned by the sensor are received, setting the working mode to be a receiving mode, and storing the data;under a data storage mode, writing the received sensor return data into the SD card, if the storage is successful, starting a 5G access base station available unit, and then setting the working mode as a sending mode; if the storage fails, the working mode is directly set as a sending mode;the STM32 control system sends the data of the SD card to the 5G module through the serial communication port.
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