CN110719580A - Communication method, device, terminal, gateway and computer storage medium - Google Patents

Abstract

The embodiment of the present invention relates to the Internet of Things technology, and discloses a communication method, device, terminal, gateway and computer storage medium. The method includes: receiving a downlink signal sent by a first upper-level network device; wherein the downlink signal includes a target A terminal identifier and an operation instruction for instructing the target terminal to operate; the first upper-level network device includes a LoRa gateway, or a second LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal; Determine whether the first LoRa terminal itself is the target terminal according to the downlink signal; corresponding to determining that the first LoRa terminal itself is the target terminal, execute the operation instruction in the downlink signal; corresponding to It is determined that the first LoRa terminal itself is not the target terminal, and the downlink signal is forwarded to a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal.

Description

A communication method, device, terminal, gateway and computer storage medium

technical field

The embodiments of the present invention relate to the Internet of Things technology, and in particular, to a communication method, device, terminal, gateway, and computer storage medium.

Background technique

With the continuous development of Internet of Things technology and the increasing quality of life, people's demand for intelligent experience is also increasing. The application of various traditional communication and transmission technologies in various Internet of Things industries is gradually unable to meet people's needs. 2.4GHz WiFi, Bluetooth, Zigbee and other traditional communication technologies and traditional WAN technologies 2G/3G/4G and other wireless technologies can realize network interconnection and communication of various terminal devices, but they cannot take into account long-distance transmission and low power consumption at the same time. consumption transmission.

Until the Low Power Wide Area Network (LPWAN) technology appears, it is possible to minimize power consumption and save transmission costs while ensuring longer-distance communication transmission. LoRa (Long Range) is a low-power wide-area network communication technology. It is an ultra-long-distance wireless transmission technology based on spread spectrum technology promoted by Semtech in the United States. Features. At present, LoRa mainly operates on free frequency bands around the world, such as 433MHz and other frequency bands.

However, at present, the method of using LoRa for communication is mainly achieved by using the LoRa processor to send a request to the LoRa terminal at a specified time node using the LoRa gateway, and the LoRa terminal uses the LoRa gateway to send data to the LoRa processor after receiving the request. However, this solution requires the LoRa processor to send a request to the LoRa terminal at a specific time node. When the LoRa terminal needs to report data (such as alarm information) to the LoRa gateway, it needs to use an independent channel for reporting, and needs to use an independent LoRa The processor processes the channel configuration, frequency band configuration, and sending and receiving requests of the LoRa gateway and each LoRa terminal. The deployment cost is high, and data is easily lost due to the distance or other interference, and the stability of data transmission cannot be guaranteed.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present invention provide a communication method, device, terminal, gateway and computer storage medium to solve at least one problem in the prior art, which can solve the problem that the LoRa network deployment cost is high and the distance is too long. Or other interference, it is easy to lose data, and it is a technical problem that the stability of data transmission cannot be guaranteed, so as to make full use of terminal resources and ensure the stability of LoRa network during long-distance transmission and complex environment transmission of data.

In order to achieve the above-mentioned purpose, the technical scheme of the embodiment of the present invention is realized as follows:

In a first aspect, an embodiment of the present invention provides a communication method, the method is applied to a first LoRa terminal, and the method includes:

Receive a downlink signal sent by a first upper-level network device; wherein, the downlink signal includes a target terminal identifier and an operation instruction used to instruct the target terminal to operate; the first upper-level network device includes a LoRa gateway, or is associated with the The first LoRa terminal is closer to the second LoRa terminal than the LoRa gateway;

Determine whether the first LoRa terminal itself is the target terminal according to the downlink signal;

Corresponding to determining that the first LoRa terminal itself is the target terminal, execute the operation instruction in the downlink signal;

Corresponding to determining that the first LoRa terminal itself is not the target terminal, the downlink signal is forwarded to a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal.

Further, after receiving the downlink signal sent by the first upper-level network device, the method further includes:

sending a first response message to the first upper-level network device; wherein, the first response message is used to indicate that the first LoRa terminal receives the downlink signal;

Receive a second response message sent by the first upper-level network device; wherein, the second response message is used to instruct the first LoRa terminal to complete signal transmission with the first upper-level network device.

Further, determining whether the first LoRa terminal itself is the target terminal according to the downlink signal includes:

According to the target terminal identifier in the downlink signal, determine whether the first LoRa terminal itself has the target terminal identifier, and if the first LoRa terminal itself has the target terminal identifier, determine the first LoRa terminal itself is the target terminal.

Further, the forwarding of the downlink signal to a third LoRa terminal farther from the LoRa gateway than the first LoRa terminal includes:

According to a preset signal forwarding strategy, the third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal is acquired, and the downlink signal is forwarded to the third LoRa terminal.

Further, the forwarding of the downlink signal to a third LoRa terminal farther from the LoRa gateway than the first LoRa terminal includes:

Perform auto-increment on the address of the first LoRa terminal itself, obtain the address of the third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal, and forward the downlink signal to the third LoRa terminal.

Further, the forwarding of the downlink signal to a third LoRa terminal farther from the LoRa gateway than the first LoRa terminal includes:

forwarding the downlink signal to a fourth LoRa terminal; wherein, the fourth LoRa terminal is the terminal closest to the first LoRa terminal and farther from the LoRa gateway than the first LoRa terminal;

Determine whether the third response message sent by the fourth LoRa terminal is received; wherein, the third response message is used to indicate that the fourth LoRa terminal receives the downlink signal;

Corresponding to determining that the first LoRa terminal receives the third response message sent by the fourth LoRa terminal, a fourth response message is sent to the fourth LoRa terminal; wherein, the fourth response message is used to indicate The first LoRa terminal and the fourth LoRa terminal complete signal transmission;

Corresponding to determining that the first LoRa terminal has not received the third response message sent by the fourth LoRa terminal, the downlink signal is forwarded to the fifth LoRa terminal; wherein, the fifth LoRa terminal is a distance away from the third LoRa terminal. The first LoRa terminal is the next closest terminal and is farther from the LoRa gateway than the first LoRa terminal.

Further, the method also includes:

Receive an uplink signal sent by a second upper-level network device; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway; the second upper-level network device is the same as the first LoRa terminal. Compared with the sixth LoRa terminal farther from the LoRa gateway;

Determine whether the first LoRa terminal itself is the LoRa gateway according to the uplink signal;

Corresponding to determining that the first LoRa terminal itself is not the LoRa gateway, the uplink signal is forwarded to a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal.

Further, after receiving the uplink signal sent by the second upper-level network device, the method further includes:

Send a fifth response message to the second upper-level network device; wherein, the fifth response message is used to indicate that the first LoRa terminal receives the uplink signal;

A sixth response message sent by the second upper-level network device is received; wherein, the sixth response message is used to instruct the first LoRa terminal and the second upper-level network device to complete signal transmission.

Further, determining whether the first LoRa terminal itself is the LoRa gateway according to the uplink signal includes:

According to the LoRa gateway identifier in the uplink signal, determine whether the first LoRa terminal itself has the LoRa gateway identifier, and if the first LoRa terminal itself does not have the target terminal identifier, determine whether the first LoRa terminal itself has the target terminal identifier. A LoRa terminal itself is not the LoRa gateway.

Further, the forwarding of the uplink signal to a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal includes:

According to a preset signal forwarding strategy, the address of the seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal is obtained, and the uplink signal is forwarded to the seventh LoRa terminal.

Further, the forwarding of the uplink signal to a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal includes:

Perform self-decrement on the address of the first LoRa terminal itself, obtain the address of the seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal, and forward the uplink signal to the seventh LoRa terminal.

Further, the forwarding of the uplink signal to a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal includes:

forwarding the uplink signal to the eighth LoRa terminal; wherein, the eighth LoRa terminal is the terminal closest to the first LoRa terminal and closer to the LoRa gateway than the first LoRa terminal;

Determine whether the seventh response message sent by the eighth LoRa terminal is received; wherein, the seventh response message is used to indicate that the eighth LoRa terminal receives the uplink signal;

Corresponding to determining that the first LoRa terminal receives the seventh response message sent by the eighth LoRa terminal, sends an eighth response message to the eighth LoRa terminal; wherein, the eighth response message is used to indicate The first LoRa terminal and the eighth LoRa terminal complete signal transmission;

Corresponding to determining that the first LoRa terminal has not received the seventh response message sent by the eighth LoRa terminal, the uplink signal is forwarded to the ninth LoRa terminal; wherein, the ninth LoRa terminal is a distance from The first LoRa terminal is the next closest terminal and is closer to the LoRa gateway than the first LoRa terminal.

In a second aspect, an embodiment of the present invention provides a communication method, the method is applied to a LoRa gateway, and the method includes:

From the LoRa terminals under the jurisdiction of the LoRa gateway itself, determine the LoRa terminal with the highest order according to the preset sorting strategy;

Generating a downlink signal; wherein, the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate;

Send the downlink signal to the LoRa terminal with the highest order.

Further, after the downlink signal is sent to the LoRa terminal with the highest order, the method further includes:

Receive the ninth response message sent by the LoRa terminal with the highest order; wherein, the ninth response message is used to indicate that the LoRa terminal with the highest order receives the downlink signal;

Send a tenth response message to the LoRa terminal with the highest order; wherein, the tenth response message is used to instruct the LoRa gateway and the LoRa terminal with the highest order to complete signal transmission.

Further, the method also includes:

Receive the uplink signal sent by the LoRa terminal with the highest order; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway;

Determine whether the LoRa gateway itself is the LoRa gateway according to the uplink signal;

Corresponding to determining that the LoRa gateway itself is the LoRa gateway, the reporting instruction in the uplink signal is obtained.

Further, after receiving the uplink signal sent by the LoRa terminal with the highest order, the method further includes:

Send an eleventh response message to the LoRa terminal with the highest order; wherein, the eleventh response message is used to instruct the LoRa gateway to receive the uplink signal;

Receive the twelfth response message sent by the LoRa terminal with the highest order; wherein, the twelfth response message is used to instruct the LoRa gateway and the LoRa terminal with the highest order to complete signal transmission.

In a third aspect, an embodiment of the present invention provides a communication device, the device comprising:

a first receiving unit, configured to receive a downlink signal sent by a first upper-level network device; wherein the downlink signal includes a target terminal identifier and an operation instruction used to instruct the target terminal to operate; the first upper-level network device includes LoRa gateway, or a second LoRa terminal closer to the LoRa gateway than the device;

a first determining unit, configured to determine whether the device itself is the target terminal according to the downlink signal;

a first execution unit, configured to execute the operation instruction in the downlink signal in response to determining that the device itself is the target terminal; and,

Corresponding to determining that the device itself is not the target terminal, the downlink signal is forwarded to a third LoRa terminal that is farther from the LoRa gateway than the device.

Further, the device also includes:

The second receiving unit is configured to receive an uplink signal sent by a second upper-level network device; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway; the second upper-level network device is a a sixth LoRa terminal farther from the LoRa gateway than the device;

a second determining unit, configured to determine whether the device itself is the LoRa gateway according to the uplink signal;

The second execution unit is configured to forward the uplink signal to a seventh LoRa terminal that is closer to the LoRa gateway than the device in response to determining that the device itself is not the LoRa gateway.

In a fourth aspect, an embodiment of the present invention provides a communication device, where the device includes:

The third determination unit is used to determine the LoRa terminal with the highest order according to the preset sorting strategy from among the LoRa terminals under the jurisdiction of the device itself;

a generating unit, configured to generate a downlink signal; wherein the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate;

A sending unit, configured to send the downlink signal to the LoRa terminal with the highest order.

Further, the device also includes:

The third receiving unit is used to receive the uplink signal sent by the LoRa terminal with the highest order; wherein, the uplink signal includes the identifier of the device and a reporting instruction for reporting information to the device;

a fourth determining unit, configured to determine whether the device itself is the device according to the uplink signal;

A third execution unit, configured to obtain the reporting instruction in the uplink signal in response to determining that the device itself is the device.

In a fifth aspect, an embodiment of the present invention provides a communication terminal, where the terminal includes a first communication bus, a first memory, and a first processor; wherein,

the first communication bus, configured to implement connection communication between components;

the first memory configured to store a computer program executable on the processor;

The first processor is configured to execute the steps of the communication method of the first aspect when running the computer program.

In a sixth aspect, an embodiment of the present invention provides a communication gateway, where the gateway includes a second communication bus, a second memory, and a second processor; wherein,

the second communication bus, configured to implement connection communication between components;

the second memory configured to store a computer program executable on the processor;

The second processor is configured to perform the steps of the second aspect when running the computer program.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a communication program is stored in the computer-readable storage medium, and when the communication program is executed by at least one processor, the communication described in the first aspect above is implemented The steps of the method of the program or the steps of the method of implementing the communication program described in the second aspect above.

In a communication method, device, terminal, gateway, and computer storage medium provided by an embodiment of the present invention, firstly, a downlink signal sent by a first upper-level network device is received; wherein, the downlink signal includes a target terminal identifier and is used to indicate the target terminal. An operation instruction for the terminal to operate; the first upper-level network device includes a LoRa gateway, or a second LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal; the first LoRa terminal is determined according to the downlink signal. Whether a LoRa terminal itself is the target terminal; corresponding to determining that the first LoRa terminal itself is the target terminal, execute the operation instruction in the downlink signal; corresponding to determining that the first LoRa terminal itself is not The target terminal forwards the downlink signal to a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal. In this way, it can solve the technical problem that the LoRa network deployment cost is high, and the data is easily lost due to the distance or other interference, and the stability of data transmission cannot be guaranteed, so as to make full use of terminal resources and ensure that the LoRa network can be transmitted over long distances, complex The stability of the environment when transferring data.

Description of drawings

FIG. 1 is a schematic diagram of an exemplary network architecture according to an embodiment of the present invention;

2 is a schematic diagram of a minimum unit used to form a network architecture according to an embodiment of the present invention;

3 is a schematic flowchart of a communication method according to an embodiment of the present invention;

FIG. 4 is a schematic flowchart of another communication method provided by an embodiment of the present invention;

5 is a schematic diagram of a LoRa terminal reporting a signal to a LoRa gateway according to an embodiment of the present invention;

6 is a schematic flowchart of a communication method according to an embodiment of the present invention;

FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of the present invention;

FIG. 8 is a schematic diagram of a communication method provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of still another communication method provided by an embodiment of the present invention;

10 is a schematic diagram of a LoRa network-based smart street light provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of still another communication device according to an embodiment of the present invention;

13 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a gateway according to an embodiment of the present invention.

Detailed ways

To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the specific technical solutions of the invention will be described in further detail below with reference to the accompanying drawings in the embodiments of the present invention. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

FIG. 1 is a schematic diagram of an exemplary network architecture provided by an embodiment of the present invention. As shown in FIG. 1 , the network architecture includes a server, at least one LoRa gateway, and at least one LoRa terminal, wherein the server can communicate with at least one LoRa gateway. Connected via standard TCP/IP protocol, the LoRa gateway can connect with at least one LoRa terminal. The server can send messages to the LoRa terminal through the LoRa gateway to which the LoRa terminal belongs, and the LoRa terminal can also report messages to the server through the LoRa gateway to which the LoRa terminal belongs. For example, if the server needs to turn on the LoRa terminal 1, the server sends a light-on request to the LoRa terminal 1 through the LoRa gateway 1 to which the LoRa terminal belongs. When the LoRa terminal 1 receives the light-on request, it can perform the corresponding light-on processing, but If the LoRa terminal 1 fails and cannot be turned on, the LoRa terminal 1 can report the fault information to the server through the LoRa gateway 1. The network architecture in the embodiment of the present invention may also be applied to other Internet of Things scenarios, which is not limited in the embodiment of the present invention.

It should be noted that the network architecture shown in FIG. 1 may be composed of at least one minimum unit. Referring to FIG. 2 , it shows a schematic diagram of the minimum unit used to form the network architecture. The minimum unit includes at least one LoRa terminal and one The LoRa gateway to which the terminal belongs. Among them, each LoRa terminal needs to complete related configuration work with the LoRa gateway, including configuring baud rate, air rate, communication channel and terminal address. In addition, the LoRa gateway can connect and communicate with each LoRa terminal, and can also connect and communicate between two LoRa terminals. The default is that the terminal with a smaller (or larger) assigned address is physically closer to the gateway, so as to ensure that the LoRa terminal closer to the LoRa gateway will suffer less interference, and it can also ensure that the LoRa terminal closer to the LoRa gateway will receive less interference. Terminal, the greater the probability that the LoRa terminal receives the message sent by the LoRa gateway, the greater the probability that the LoRa gateway can receive the message sent by the LoRa terminal is the LoRa terminal that is closer to the LoRa gateway.

Example 1

An embodiment of the present invention provides a communication method, and the method is applied to a first LoRa terminal. FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present invention. As shown in FIG. 3 , the method mainly includes the following steps:

Step 301: Receive a downlink signal sent by a first upper-level network device; wherein, the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate; the first upper-level network device includes a LoRa gateway, or a second LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal;

Step 302: Determine whether the first LoRa terminal itself is the target terminal according to the downlink signal;

Step 303, corresponding to determining that the first LoRa terminal itself is the target terminal, execute the operation instruction in the downlink signal;

Step 304 , corresponding to determining that the first LoRa terminal itself is not the target terminal, forward the downlink signal to a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal.

Through the technical solution shown in Figure 3, after receiving the downlink signal sent by the first upper-level network device, the downlink signal can be forwarded to the next LoRa terminal in turn until the destination terminal receives the downlink signal, thereby ensuring the stability of data transmission.

For the technical solution shown in FIG. 3, in a possible implementation manner, after receiving the downlink signal sent by the first upper-level network device described in step 301, it further includes:

sending a first response message to the first upper-level network device; wherein, the first response message is used to indicate that the first LoRa terminal receives the downlink signal; and,

A second response message sent by the first upper-level network device is received; wherein, the second response message is used to instruct the first LoRa terminal to complete signal transmission with the first upper-level network device.

It should be noted that the first LoRa terminal may be the received downlink signal sent by the LoRa gateway, or it may be the received downlink signal sent by the second LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal. The first LoRa terminal is the LoRa terminal closest to the LoRa gateway, then the first LoRa terminal receives the downlink signal sent by the LoRa gateway, otherwise the first LoRa terminal receives the second LoRa gateway that is closer to the LoRa gateway than the first LoRa terminal. Two downlink signals sent by the LoRa terminal.

For example, as shown in Figure 2, when the first LoRa terminal is the LoRa terminal 1 closest to the LoRa gateway, the LoRa terminal 1 receives the downlink signal S1 sent by the LoRa gateway, and when the first LoRa terminal is not the closest LoRa gateway to the LoRa gateway For the terminal 1, for example, when the first LoRa terminal is the LoRa terminal 2, the LoRa terminal 2 receives the downlink signal S2 forwarded by the LoRa terminal 1 which is closer to the LoRa gateway than the LoRa terminal 2.

Here, the downlink signal may have the first LoRa terminal identifier. Therefore, only after the first LoRa terminal receives the downlink signal can it send the first response message to the first upper-level network device and receive the message sent by the first upper-level network device. The second response message, thereby realizing the three-way handshake with the first upper-level network device, and determining that the first LoRa terminal receives the downlink signal through the three-way handshake. As shown in Figure 2, when the first LoRa terminal is LoRa terminal 1, it will receive the downlink signal S1 sent by the LoRa gateway, then the LoRa terminal 1 will send the first response message ACK1-1 to the LoRa gateway, and receive the message sent by the LoRa gateway. The second response message ACK1-2, thereby realizing the three-way handshake with the LoRa gateway, determines that the LoRa terminal 1 receives the downlink signal S1.

For the technical solution shown in FIG. 3 , in a possible implementation manner, the step of determining whether the first LoRa terminal itself is the target terminal according to the downlink signal in step 302 includes:

According to the target terminal identifier in the downlink signal, determine whether the first LoRa terminal itself has the target terminal identifier, and if the first LoRa terminal itself has the target terminal identifier, determine the first LoRa terminal itself is the target terminal.

For example, the target terminal identifier in the downlink signal is the target terminal address, and if the address of the first LoRa terminal itself is the target terminal address in the downlink signal, the first LoRa terminal itself is determined to be the target terminal.

For the technical solution shown in FIG. 3 , step 303 corresponds to determining that the first LoRa terminal itself is the target terminal and executing the operation instruction in the downlink signal. It should be noted that when it is determined that the first LoRa terminal itself is the target terminal If the first LoRa terminal itself is the target terminal, the operation instruction in the downlink signal is executed. For example, the operation command in the downlink signal is the target terminal lighting command, and when it is determined that the first LoRa terminal itself is the target terminal, the first LoRa terminal will perform corresponding lighting processing.

For the technical solution shown in FIG. 3 , step 304 corresponds to determining that the first LoRa terminal itself is not the target terminal, and forwarding the downlink signal to a distance from the LoRa terminal compared to the first LoRa terminal A third LoRa terminal further from the gateway includes:

According to a preset signal forwarding strategy, a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal is obtained, and the downlink signal is forwarded to the third LoRa terminal.

Or, perform auto-increment on the address of the first LoRa terminal itself, obtain the address of a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal, and forward the downlink signal to the The third LoRa terminal.

Specifically, when it is determined that the first LoRa terminal itself is not the target terminal, auto-increment is performed on the address of the first LoRa terminal itself, and the first LoRa terminal that is farther away from the LoRa gateway is obtained than the first LoRa terminal. The address of the third LoRa terminal, and the downlink signal is forwarded to the third LoRa terminal, wherein the signal in the forwarded downlink signal may have the address of the third LoRa terminal, and may also have a forwarding identifier, which is used to identify the forwarding to The signal of the third LoRa terminal is the forwarded downlink signal.

For example, as shown in Figure 2, when the first LoRa terminal is LoRa terminal 1, not the destination terminal, since the address of LoRa terminal 1 itself is 0x01, LoRa terminal 1 will auto-increment on the basis of its own address. Obtain address 0x02, that is, the address of the third LoRa terminal farther from the LoRa gateway than LoRa terminal 1, that is, LoRa terminal 2, carry the address of LoRa terminal 2 in the downlink signal, form downlink signal S2, and transfer all The downlink signal S2 is forwarded to the LoRa terminal 2 .

For the technical solution shown in FIG. 3 , step 304 corresponds to determining that the first LoRa terminal itself is not the target terminal, and forwarding the downlink signal to a distance from the LoRa terminal compared to the first LoRa terminal A third LoRa terminal further from the gateway includes:

forwarding the downlink signal to a fourth LoRa terminal; wherein, the fourth LoRa terminal is the terminal closest to the first LoRa terminal and farther from the LoRa gateway than the first LoRa terminal;

Determine whether the third response message sent by the fourth LoRa terminal is received; wherein, the third response message is used to indicate that the fourth LoRa terminal receives the downlink signal;

Corresponding to determining that the first LoRa terminal receives the third response message sent by the fourth LoRa terminal, a fourth response message is sent to the fourth LoRa terminal; wherein, the fourth response message is used to indicate the first The LoRa terminal and the fourth LoRa terminal complete signal transmission;

Corresponding to determining that the first LoRa terminal has not received the third response message sent by the fourth LoRa terminal, the downlink signal is forwarded to the fifth LoRa terminal; wherein, the fifth LoRa terminal is a distance from the third LoRa terminal. A LoRa terminal is the next closest terminal and is farther from the LoRa gateway than the first LoRa terminal.

It should be noted that the third LoRa terminal is the fourth LoRa terminal or the fifth LoRa terminal. First, the downlink signal is forwarded to the fourth LoRa terminal. If the fourth LoRa terminal does not receive the downlink signal, it is forwarded to the fifth LoRa terminal. Downlink signal.

For example, as shown in FIG. 2 , when the first LoRa terminal is LoRa terminal 1, LoRa terminal 1 first forwards the downlink signal S2 to the nearest LoRa terminal 1 after confirming to receive the downlink signal S1 sent by the LoRa gateway. And LoRa terminal 2, which is farther from the LoRa gateway than LoRa terminal 1, when LoRa terminal 1 confirms receipt of the response message ACK2-1 sent by LoRa terminal 2, LoRa terminal 1 sends response message ACK2-2 to LoRa terminal 2 , realize the three-way handshake with LoRa terminal 2; when LoRa terminal 1 does not receive the response message ACK2-1 sent by LoRa terminal 2, then LoRa terminal 1 forwards the downlink signal to the LoRa terminal 1 time close to the LoRa terminal 1 Compared to the LoRa terminal 3 which is farther from the LoRa gateway.

For the technical solution shown in FIG. 3, steps 301-304 are the process of the LoRa gateway transmitting the downlink signal to the LoRa terminal. In a possible implementation, the technical solution shown in FIG. 3 also includes the LoRa terminal transmitting the uplink signal to the LoRa gateway. The process of the signal is shown in Figure 4. The technical solution in Figure 4 includes:

Step 401, receiving an uplink signal sent by a second upper-level network device; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway; the second upper-level network device is the same as the second upper-level network device. A LoRa terminal is farther from the LoRa gateway than the sixth LoRa terminal;

Step 402: Determine whether the first LoRa terminal itself is the LoRa gateway according to the uplink signal;

Step 403 , corresponding to determining that the first LoRa terminal itself is not the LoRa gateway, forward the uplink signal to a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal.

For the technical solution shown in FIG. 4 , the step of receiving the uplink signal sent by the second upper-level network device in step 401 includes:

Send a fifth response message to the second upper-level network device; wherein, the fifth response message is used to indicate that the first LoRa terminal receives the uplink signal;

A sixth response message sent by the second upper-level network device is received; wherein, the sixth response message is used to instruct the first LoRa terminal and the second upper-level network device to complete signal transmission.

It should be noted that the first LoRa terminal may receive an uplink signal sent by a sixth LoRa terminal that is farther away from the LoRa gateway than the first LoRa terminal. Figure 5 is a schematic diagram of the LoRa terminal reporting signals to the LoRa gateway. As shown in Figure 5, when the LoRa terminal 3 is the second upper-level network device, the first LoRa terminal is the LoRa terminal 2, and the LoRa terminal 3 sends an uplink signal to the LoRa gateway, then LoRa terminal 2 will receive the uplink signal sent by LoRa terminal 3.

In addition, the uplink signal may also have the first LoRa terminal identifier. Therefore, only after the first LoRa terminal receives the uplink signal, it can send the fifth response message to the second upper-level network device, and receive the second upper-level network device. The sixth response message, thereby realizing the three-way handshake with the second upper-level network device, and determining that the first LoRa terminal receives the uplink signal through the three-way handshake.

For example, as shown in Figure 5, when the first LoRa terminal is LoRa terminal 2, it will receive the uplink signal S-P1 sent by LoRa terminal 3, then LoRa terminal 2 will send the fifth response message ACK to LoRa terminal 3 -P1-1, and receive the sixth response message ACK-P1-2 sent by the LoRa terminal 3, so as to realize the three-way handshake with the LoRa terminal 3, and determine that the LoRa terminal 1 has received the uplink signal S-P1.

For the technical solution shown in FIG. 4 , determining whether the first LoRa terminal itself is the LoRa gateway according to the uplink signal in step 402 includes:

According to the LoRa gateway identifier in the uplink signal, determine whether the first LoRa terminal itself has the LoRa gateway identifier, and if the first LoRa terminal itself does not have the target terminal identifier, determine whether the first LoRa terminal itself has the target terminal identifier. The terminal itself is not the LoRa gateway.

For example, the LoRa gateway identifier in the uplink signal is the LoRa gateway address, and if the address of the first LoRa terminal itself is not the LoRa gateway address in the uplink signal, it is determined that the first LoRa terminal itself is not the LoRa gateway.

For the technical solution shown in FIG. 4 , determining whether the first LoRa terminal itself is the LoRa gateway according to the uplink signal in step 403 includes:

According to a preset signal forwarding strategy, the address of a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal is obtained, and the uplink signal is forwarded to the seventh LoRa terminal.

Or, perform self-decrement on the address of the first LoRa terminal itself, obtain the address of the seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal, and forward the uplink signal to the The seventh LoRa terminal.

Specifically, when it is determined that the first LoRa terminal itself is not the LoRa gateway, the address of the first LoRa terminal itself is decremented to obtain the first LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal. The address of the seventh LoRa terminal, and the uplink signal is forwarded to the seventh LoRa terminal, wherein the signal in the forwarded uplink signal may have the address of the seventh LoRa terminal, and may also have a forwarding identifier, that is, it is used to identify the forwarding to The signal of the seventh LoRa terminal is the forwarded uplink signal.

For example, as shown in Figure 5, when the first LoRa terminal is LoRa terminal 2, not a LoRa gateway, since the address of LoRa terminal 2 itself is 0x02, then LoRa terminal 2 will decrement itself based on its own address, Obtain the address 0x01, that is, the address of the seventh LoRa terminal that is closer to the LoRa gateway than LoRa terminal 2, that is, LoRa terminal 1, carry the address of LoRa terminal 1 in the uplink signal, form the uplink signal S2, and connect all The uplink signal S2 is forwarded to the LoRa terminal 1 .

For the technical solution shown in FIG. 4 , determining whether the first LoRa terminal itself is the LoRa gateway according to the uplink signal in step 403 includes:

forwarding the uplink signal to the eighth LoRa terminal; wherein, the eighth LoRa terminal is the terminal closest to the first LoRa terminal and closer to the LoRa gateway than the first LoRa terminal;

Determine whether the seventh response message sent by the eighth LoRa terminal is received; wherein, the seventh response message is used to indicate that the eighth LoRa terminal receives the uplink signal;

Corresponding to determining that the first LoRa terminal has received the seventh response message sent by the eighth LoRa terminal, an eighth response message is sent to the eighth LoRa terminal; wherein, the eighth response message is used to indicate the first The LoRa terminal and the eighth LoRa terminal complete signal transmission;

Corresponding to determining that the first LoRa terminal has not received the seventh response message sent by the eighth LoRa terminal, the uplink signal is forwarded to the ninth LoRa terminal; wherein, the ninth LoRa terminal is a distance from the seventh LoRa terminal. A LoRa terminal is the next closest terminal and is closer to the LoRa gateway than the first LoRa terminal.

Here, the seventh LoRa terminal is the eighth LoRa terminal or the ninth LoRa terminal, and is first forwarded to the eighth LoRa terminal that is closest to the first LoRa terminal and closer to the LoRa gateway than the first LoRa terminal For the uplink signal, if the eighth LoRa terminal does not receive the uplink signal, it forwards the uplink signal to the ninth LoRa terminal that is the second closest to the first LoRa terminal and closer to the LoRa gateway than the first LoRa terminal.

An embodiment of the present invention provides a communication method for receiving a downlink signal sent by a first upper-level network device; wherein the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate; the first The upper-level network device includes a LoRa gateway, or a second LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal; according to the downlink signal, determine whether the first LoRa terminal itself is the target terminal; Corresponding to determining that the first LoRa terminal itself is the target terminal, execute the operation instruction in the downlink signal; Corresponding to determining that the first LoRa terminal itself is not the target terminal, forward the downlink signal to a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal. Therefore, it can solve the problem that the LoRa network deployment cost is high, and the data is easily lost due to the long distance or other interference, and the stability of data transmission cannot be guaranteed, and the stability of the LoRa network when transmitting data can be ensured.

Embodiment 2

An embodiment of the present invention provides a communication method, and the method is applied to a LoRa gateway. FIG. 6 is a schematic flowchart of a communication method provided by an embodiment of the present invention. As shown in FIG. 6 , the method mainly includes the following steps:

Step 601, from the LoRa terminals under the jurisdiction of the LoRa gateway itself, determine the LoRa terminal with the highest order according to a preset sorting strategy;

Step 602, generating a downlink signal; wherein, the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate;

Step 603: Send the downlink signal to the LoRa terminal with the highest order.

For the technical solution shown in FIG. 6 , in step 601, the LoRa terminal with the highest order is determined from the LoRa terminals under the jurisdiction of the LoRa gateway itself according to the preset sorting strategy. It should be noted that, as shown in FIG. 2 , among which LoRa terminal 1, LoRa terminal 2, ..., LoRa terminal 120 are all LoRa terminals under the jurisdiction of the LoRa gateway, sort them in the order of addresses, and select the LoRa terminal 1 closest to the LoRa gateway, that is, the LoRa terminal with the highest order .

For the technical solution shown in FIG. 6 , in the generation of the downlink signal in step 602, it should be noted that the target terminal identifier may be the address of the target terminal, and the operation instruction may be to instruct the target terminal to perform operations such as turning on the lights. instruction.

For the technical solution shown in FIG. 6, in a possible implementation manner, the step of sending the uplink signal to the LoRa terminal with the highest order in step 603 further includes:

Receive the ninth response message sent by the LoRa terminal with the highest order; wherein, the ninth response message is used to indicate that the LoRa terminal with the highest order receives the downlink signal; and,

Send a tenth response message to the LoRa terminal with the highest order; wherein, the tenth response message is used to instruct the LoRa gateway and the LoRa terminal with the highest order to complete signal transmission.

It should be noted that, after sending the downlink signal to the LoRa terminal with the highest order, the ninth response message sent by the LoRa terminal with the highest order can be received; and, sending the tenth response message to the LoRa terminal with the highest order Response message, so as to realize the three-way handshake with the LoRa terminal with the highest order, and determine that the LoRa terminal with the highest order receives the downlink signal through the three-way handshake. As shown in Figure 2, when the LoRa terminal with the highest order is LoRa terminal 1, the LoRa gateway will receive the response message ACK1-1 sent by LoRa terminal 1 after sending the downlink signal to LoRa terminal 1, then the LoRa gateway will send to LoRa terminal 1. Respond to the message ACK1-2, thereby realizing the three-way handshake with the LoRa terminal 1, and confirming that the LoRa terminal 1 has received the downlink signal S1.

For the technical solution shown in Figure 6, steps 601-603 are the process of the LoRa gateway transmitting downlink signals to the LoRa terminal. In a possible implementation, the technical solution shown in Figure 6 also includes the LoRa terminal transmitting the uplink signal to the LoRa gateway. The process of the signal is shown in Figure 7, and the technical solution in Figure 7 includes:

Step 701: Receive an uplink signal sent by the LoRa terminal with the highest order; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway.

Step 702: Determine whether the LoRa gateway itself is the LoRa gateway according to the uplink signal.

Step 703, corresponding to determining that the LoRa gateway itself is the LoRa gateway, obtain the reporting instruction in the uplink signal.

For the technical solution shown in FIG. 7, the step 701 of receiving the uplink signal sent by the LoRa terminal with the highest order also includes:

Send an eleventh response message to the LoRa terminal with the highest order; wherein, the eleventh response message is used to indicate that the LoRa gateway receives the uplink signal; and,

Receive the twelfth response message sent by the LoRa terminal with the highest order; wherein, the twelfth response message is used to instruct the LoRa gateway and the LoRa terminal with the highest order to complete signal transmission.

In addition, after receiving the uplink signal sent by the LoRa terminal with the highest order, an eleventh response message may be sent to the LoRa terminal with the highest order; and, receiving the twelfth response message sent by the LoRa terminal with the highest order , so as to realize the three-way handshake with the LoRa terminal with the highest order, and determine that the LoRa gateway receives the uplink signal through the three-way handshake. As shown in Figure 5, when the LoRa terminal with the highest order is LoRa terminal 1, after the LoRa gateway receives the uplink signal S4 sent by LoRa terminal 1, it sends a response message ACK4-1 to LoRa terminal 1, and receives the response sent by LoRa terminal 1. message ACK4-2, thereby realizing the three-way handshake with the LoRa terminal 1, and confirming that the LoRa gateway has received the uplink signal S4.

For the technical solution shown in FIG. 7 , in step 702, determining whether the LoRa gateway itself is the LoRa gateway according to the uplink signal, it should be noted that, according to the LoRa gateway identifier in the uplink signal, determine the LoRa gateway itself. Whether the LoRa gateway itself has the LoRa gateway identifier, if the LoRa gateway itself has the target terminal identifier, it is determined that the LoRa gateway itself is the LoRa gateway. For example, the LoRa gateway identifier in the uplink signal is the LoRa gateway address, and if the address of the LoRa gateway itself is the LoRa gateway address in the uplink signal, it is determined that the LoRa gateway itself is the LoRa gateway.

For the technical solution shown in FIG. 7 , step 703 corresponds to determining that the LoRa gateway itself is the LoRa gateway, and obtaining the reporting instruction in the uplink signal. It should be noted that when the LoRa gateway is confirmed If the gateway itself is the LoRa gateway, it obtains the reporting instruction in the uplink signal, and can record the reporting instruction in the uplink signal, or send the reporting instruction in the uplink signal to the server. .

The embodiment of the present invention provides a communication method. From the LoRa terminals under the LoRa gateway itself, the LoRa terminal with the highest order is determined according to a preset sorting strategy; a downlink signal is generated; wherein, the downlink signal includes a target terminal an identifier and an operation instruction for instructing the target terminal to operate; sending the downlink signal to the LoRa terminal with the highest order. Therefore, it can solve the problem that the LoRa network deployment cost is high, and the data is easily lost due to the long distance or other interference, and the stability of data transmission cannot be guaranteed, and the stability of the LoRa network when transmitting data can be ensured.

Embodiment 3

An embodiment of the present invention implements a communication method, and FIG. 8 is a schematic diagram of a communication method provided by an embodiment of the present invention. As shown in FIG. 8 , the method mainly includes the following steps:

Step 801, the LoRa gateway sends a signal S1 to the LoRa terminal 1, wherein the signal S1 includes the LoRa destination terminal address, the signal transmission end identification and the operation instruction, wherein the signal transmission end identification is used to judge whether the LoRa terminal currently receiving the signal is a LoRa The destination terminal, if it is determined to be the LoRa destination terminal address, the signal transmission process is ended.

Here, the signal S1 belongs to the downlink signal sent by the LoRa gateway to the LoRa terminal.

It should be noted that the signal transmission end identifier may be the identifier that uniquely confirms that the LoRa terminal that currently receives the signal is the LoRa destination terminal. After confirming that the LoRa terminal that currently receives the signal is the LoRa destination terminal, the LoRa terminal that receives the signal It will not forward the signal to other LoRa terminals and end the signal transmission process, but when it is confirmed that the LoRa terminal currently receiving the signal is not the LoRa destination terminal, it will forward the signal to other LoRa terminals and continue the signal transmission process.

In addition, the operation instruction may be a command for the server to instruct the destination terminal to perform a specific operation, such as instructing the destination terminal to perform operations such as turning on the light. Therefore, only after it is confirmed that the LoRa terminal that currently receives the signal is the LoRa destination terminal, the current LoRa terminal Only the terminal can perform the corresponding operation processing, but it can also be any LoRa terminal that can perform the corresponding operation processing after receiving the signal.

Here, the LoRa gateway can broadcast the signal S1 in the channel, and the broadcast signal S1 is that the LoRa gateway will send the signal S1 to the LoRa terminal in the channel, but the LoRa terminal in the channel may receive the signal S1, or it may receive the signal S1. If the signal S1 is not available, especially the LoRa terminal that is far away from the LoRa gateway may not receive the signal S1 due to external factors such as distance. The LoRa terminal with a larger address is farther away from the LoRa gateway. However, LoRa terminal 1 is the terminal closest to the LoRa gateway and can receive signal S1. And when the LoRa gateway broadcasts the message in the channel, only the LoRa terminal 1 will implement the three-way handshake with the LoRa gateway. After other LoRa terminals receive the signal S1, they will not implement the three-way handshake with the LoRa gateway and ignore the signal S1. The specific implementation process of the three-way handshake can refer to the subsequent steps 802-803, and through the three-way handshake, the LoRa gateway can determine that the LoRa terminal 1 has successfully received the signal S1.

Taking a LoRa network-based smart street light solution as an example, FIG. 10 is a schematic diagram of a LoRa network-based smart street light provided by an embodiment of the present invention. As shown in FIG. 10 , the control module includes a LoRa gateway and a visibility meter. And the distance between the control module and the street lamp where LoRa terminal 1 is located is as close as possible (0.5m in this example), where LoRa terminal 1 is the closest LoRa terminal to the control module, and each street lamp includes a LoRa terminal and a microcontroller unit MCU and lighting. The interval between each street light is 25m, and each LoRa gateway can control up to 256 street lights. When there are more than 256 street lights, a new control module can be added, that is, a new LoRa gateway can be added.

Before the smart street light works, set the communication channel of all LoRa communication modules to channel 10 and the air rate to 4.8Kbps. Of course, the channel and air rate can also be set to other values as needed. When the smart street light is working, the visibility meter in the control module can collect the visibility information regularly, and upload the visibility information to the remote server. Notice that all 120 lights are on. When the LoRa gateway selects the address of the last LoRa terminal (ie, the LoRa terminal 120 ) as the destination address to send the light-on signal S1, here, it is not just to send the light-on signal S1 to the LoRa terminal 120, but to all the channels in the channel 10. When the device sends the light signal S1, all the street lights that can receive the signal S1 will light up. At this time, regardless of whether the LoRa terminal farther from the LoRa gateway receives the signal S1, the LoRa terminal 1 closest to the LoRa gateway can receive the signal S1, and the street lamp where the LoRa terminal 1 is located begins to shake hands with the LoRa gateway three times.

Step 802: After receiving the signal S1, the LoRa terminal 1 sends a first response message to the LoRa gateway.

It should be noted that, regardless of whether the LoRa destination terminal receives the signal S1 or not, when the LoRa terminal 1 receives the signal S1, it will send a first response message to the LoRa gateway, and the first response message is used to identify that the LoRa terminal 1 has received it. signal S1.

Step 803 , after receiving the first response message, the LoRa gateway sends the second response message to the LoRa terminal 1 .

Here, after receiving the first response message sent by the LoRa terminal 1, the LoRa gateway will send a second response message to the LoRa terminal 1, and the second response message is used to identify the completion of the work of the LoRa gateway sending the signal to the LoRa terminal 1.

Step 804: After the LoRa terminal 1 receives the second response message, it will generate a signal S2, where the signal S2 includes the address of the LoRa terminal 2.

In addition, the LoRa terminal 1 determines that the LoRa terminal 1 is not a LoRa destination terminal according to the signal transmission end identifier in the signal S1, and also needs to transmit a signal to the next LoRa terminal, and generate a signal S2, where the signal S2 is the forwarding signal of the signal S1, and the The signal S1 is basically the same, but the signal S2 contains the address of the LoRa terminal 2, not the address of the LoRa destination terminal. Here, the address of the LoRa terminal 2 is obtained by the self-increment of the LoRa terminal 1 on the basis of its own address, for example , the address of the terminal 1 is 0x01, then the terminal 1 will automatically increase the address 0x02 on the basis of the address 0x01, which is the address of the LoRa terminal 2, and the signal S2 also carries the forwarding identifier of the signal S1. The identification signal S2 is a forwarded signal of the signal S1.

For example, as shown in Figure 10, after the LoRa terminal 1 receives the signal S1, it implements a three-way handshake, and causes the street lamps connected to the LoRa terminal to perform corresponding lighting processing, and determines the LoRa terminal 1 according to the signal transmission end mark in the signal S1. If it is not a LoRa destination terminal, it will send a light signal to LoRa terminal 2.

Step 805 , the LoRa terminal 1 sends a signal S2 to the LoRa terminal 2 .

Here, LoRa terminal 1 can also broadcast signal S2 in the channel. Although other LoRa terminals in the channel can also receive signal S2, only the LoRa terminal with the LoRa terminal address in signal S2, that is, LoRa terminal 2, will receive the signal S2. After the signal S2, a reply message is returned to the LoRa terminal 1. Other LoRa terminals will ignore the signal S2 and will not reply to the LoRa terminal 1 with a reply message. That is, each LoRa terminal can broadcast the signal through the channel after the three-way handshake, but only the next terminal address is the address of the LoRa terminal in the signal, and the reply message can be replied.

Step 806 , determine whether the LoRa terminal 2 has completed the three-way handshake with the LoRa terminal 1 .

In addition, the three-way handshake means that when the LoRa terminal 2 receives the signal S2 sent by the LoRa terminal 1, it will send the first response message to the LoRa terminal. When the LoRa terminal 1 receives the first response message, the LoRa terminal 1 will send the The LoRa terminal 2 sends the second response message, and when the LoRa terminal 2 receives the second response message, it determines that the three-way handshake has been completed with the LoRa terminal 1.

Step 807: After the LoRa terminal 2 and the LoRa terminal 1 complete the three-way handshake, the LoRa terminal 2 sends a signal S3 to the LoRa terminal 3, wherein the signal S3 includes the address of the LoRa terminal 3.

Here, after LoRa terminal 2 and LoRa terminal 1 complete the three-way handshake, it is determined that LoRa terminal 2 is not a LoRa destination terminal according to the transmission end mark in signal S2, and a signal needs to be transmitted to the next LoRa terminal to generate signal S3 and send, wherein signal S3 It is the forwarding signal of the signal S2, which is basically the same as the signal S2. The address of the LoRa terminal 3 is obtained by the self-increment of the LoRa terminal 2 on the basis of its own address. The LoRa terminal 2 can also broadcast the signal S3 in the channel, but only the LoRa terminal 3 will reply the reply message to the LoRa terminal 2 after receiving the signal S3.

Step 808: Determine whether the LoRa terminal 3 completes the three-way handshake with the LoRa terminal 2.

Step 809: After the LoRa terminal 3 and the LoRa terminal 2 complete the three-way handshake, the LoRa terminal 3 sends a signal S4 to the LoRa destination terminal, wherein the signal S4 includes the address of the LoRa destination terminal.

It should be noted that after the LoRa terminal 3 and the LoRa terminal 2 complete the three-way handshake, it is determined that the LoRa terminal 3 is not the LoRa destination terminal according to the transmission end mark in the signal S3, and the signal needs to be transmitted to the next LoRa terminal, and the signal S4 is generated and sent. The signal S4 is the forwarding signal of the signal S3, which is basically the same as the signal S3. The address of the LoRa destination terminal is obtained by the self-increment of the LoRa terminal 3 on the basis of its own address.

Step 810: After the LoRa destination terminal receives the signal S4, it sends a first response message to the LoRa terminal 3.

Here, the first response message is used to identify that the LoRa destination terminal has received the signal S4.

Step 811: After receiving the first response message, the LoRa terminal 3 sends a second response message to the LoRa destination terminal.

In addition, after receiving the second response message, the LoRa destination terminal determines that the LoRa terminal that currently receives the signal S4 is the LoRa destination terminal according to the transmission end identifier in the signal S4, so it does not need to transmit the signal to the next LoRa terminal. process, and perform corresponding operations according to the operation instruction, for example, perform the lighting operation according to the lighting instruction of the LoRa destination terminal in the signal S4.

For example, as shown in Figure 10, if the LoRa destination terminal is LoRa terminal 120, after LoRa terminal 1 receives the light-on signal, it will forward the light-on signal to LoRa terminal 2. After LoRa terminal 2 receives the light-on signal, The signal will be forwarded to the LoRa terminal 3, and the light-on signal will be transmitted according to the above method, so that the LoRa terminal 120 receives the light-on signal, ensuring that each guaranteed LoRa terminal can receive the light-on signal, thereby ensuring that each connection with the LoRa terminal is connected. Street lights can be turned on.

Step 812: When the LoRa terminal 3 has not completed the three-way handshake with the LoRa terminal 2, the LoRa terminal 2 will generate a signal S-P4, wherein the signal S-P4 contains the address of the LoRa destination terminal.

Here, the fact that the LoRa terminal 3 has not completed the three-way handshake with the LoRa terminal 2 may also mean that the LoRa terminal 2 has not received the first response message, thus determining that the LoRa terminal 3 has not received the signal S3, then the LoRa terminal 2 will generate the signal S-P4 , where the address of the LoRa destination terminal is obtained by self-incrementing according to the address of terminal 3, wherein the signal S-P4 is the forwarding signal of the signal S3, which is basically consistent with the signal S3.

For example, as shown in Figure 10, when some terminals are disconnected in the entire communication link, for example, LoRa terminal 5 has not responded to LoRa terminal 4 with a response message, then LoRa terminal 4 will continue to send light signals to LoRa terminal 6. S6, ensure that the light-on signal continues to be transmitted.

Step 813, the LoRa terminal 2 will send the signal S-P4 to the LoRa destination terminal.

Step 814: After the LoRa destination terminal receives the signal S-P4, it sends a first response message to the LoRa terminal 2.

In addition, the first response message is used to identify that the LoRa destination terminal has received the signal S-P4.

Step 815: After receiving the first response message, the LoRa terminal 2 sends a second response message to the LoRa destination terminal.

Here, after receiving the second response message, the LoRa destination terminal determines that the LoRa terminal currently receiving the signal S-P4 is the LoRa destination terminal according to the transmission end identifier in the signal S-P4, and does not need to transmit the signal to the next LoRa terminal.

Step 816: When the LoRa terminal 2 has not completed the three-way handshake with the LoRa terminal 1, the LoRa terminal 1 will generate a signal S-P5, wherein the signal S-P5 contains the address of the LoRa terminal 3.

It should be noted that the fact that LoRa terminal 2 has not completed the three-way handshake with LoRa terminal 1 may also mean that LoRa terminal 1 has not received the first response message, thus determining that LoRa terminal 2 has not received signal S2, then LoRa terminal 1 will generate a signal S-P5, where the address of the LoRa terminal 3 is obtained by self-incrementing according to the address of the terminal 2, and the signal S-P5 is the forwarding signal of the signal S2, which is basically the same as the signal S2.

Step 817 , the LoRa terminal 1 will send the signal S-P5 to the LoRa terminal 3 .

Step 818 , determine whether the LoRa terminal 3 completes the three-way handshake with the LoRa terminal 1 .

Step 819: After the LoRa terminal 3 and the LoRa terminal 1 complete the three-way handshake, the LoRa terminal 3 sends a signal S5 to the LoRa destination terminal, wherein the signal S5 includes the address of the LoRa destination terminal.

Step 820: After the LoRa destination terminal receives the signal S5, it sends a first response message to the LoRa terminal 3.

Step 821: After receiving the first response message, the LoRa terminal 3 sends a second response message to the LoRa destination terminal.

Step 822: When the LoRa terminal 3 has not completed the three-way handshake with the LoRa terminal 1, the LoRa terminal 1 will generate a signal S-P6, wherein the signal S-P6 contains the address of the LoRa destination terminal.

Step 823, the LoRa terminal 1 will send the signal S-P6 to the LoRa destination terminal.

Here, the signal S-P6 includes the address of the LoRa destination terminal, and the signal S-P6 is a forwarding signal of the signal S-P5, which is basically the same as the signal S-P5.

Step 824: After the LoRa destination terminal receives the signal S-P6, it sends a first response message to the LoRa terminal 1.

Step 825: After receiving the first response message, the LoRa terminal 1 sends a second response message to the LoRa destination terminal.

Here, after receiving the second response message, the LoRa destination terminal determines that the LoRa terminal currently receiving the signal S-P6 is the LoRa destination terminal according to the transmission end identifier in the signal S-P6, so it does not need to transmit the signal to the next LoRa terminal, End the process of signaling.

For the technical solution shown in Figure 8, steps 801-825 are the process of the LoRa gateway transmitting downlink signals to the LoRa terminal. In a possible implementation, the technical solution shown in Figure 9 also includes the LoRa terminal transmitting the uplink signal to the LoRa gateway. The process of the signal is shown in Figure 9. The technical solution in Figure 9 includes:

Step 901, LoRa destination terminal sends signal S1 to LoRa terminal 3, wherein, signal S1 includes LoRa terminal 3 address, signal transmission end mark and operation instruction, and wherein signal transmission end mark is used to judge whether the LoRa terminal that currently receives the signal is. LoRa gateway, if it is determined to be the address of the LoRa gateway, the signal transmission process is ended.

It should be noted that when the LoRa destination terminal needs to report a signal, the LoRa destination terminal will broadcast the uplink signal in the channel. When the LoRa gateway receives the uplink signal, it will shake hands with the LoRa destination terminal three times, but if the LoRa destination terminal always communicates with the LoRa destination terminal. If the LoRa gateway cannot complete the three-way handshake, the LoRa destination terminal will send a signal S1 to the LoRa terminal 3, and the signal S1 is the forwarding signal of the uplink signal. The address of the LoRa terminal 3 is obtained by the LoRa destination terminal on the basis of its own address.

For example, as shown in FIG. 10 , when some terminals are disconnected in the entire communication link, if the LoRa terminal 120 is the LoRa destination terminal, the LoRa terminal 120 needs to report an alarm signal to the LoRa gateway, because the distance between the LoRa gateway and the LoRa terminal 120 If it is far away, the LoRa gateway and the LoRa terminal 120 cannot complete the three-way handshake, and the LoRa terminal 120 will forward the alarm signal to the LoRa terminal 119 .

Step 902: Determine whether the LoRa terminal 3 completes the three-way handshake with the LoRa destination terminal.

Step 903: After the LoRa terminal 3 and the LoRa terminal 2 complete the three-way handshake, the LoRa terminal 3 sends a signal S2 to the LoRa terminal 1, wherein the signal S2 includes the address of the LoRa terminal 2.

Here, after the LoRa terminal 3 and the LoRa terminal 2 complete the three-way handshake, it will be determined whether the LoRa terminal 3 is a LoRa gateway according to the signal transmission end mark in the signal S1. If it is not a LoRa gateway, the LoRa terminal 3 will generate a signal S2 is basically the same as the signal S1, except that the signal S2 contains the address of the LoRa terminal 2, not the address of the LoRa terminal 1, and also carries the forwarding identifier of the signal S1.

Step 904 , determine whether the LoRa terminal 2 completes the three-way handshake with the LoRa terminal 3 .

Step 905: After the LoRa terminal 2 and the LoRa terminal 3 complete the three-way handshake, the LoRa terminal 2 sends a signal S3 to the LoRa terminal 1, wherein the signal S3 includes the address of the LoRa terminal 1.

Step 906: After the LoRa terminal 1 receives the signal S3, it sends a first response message to the LoRa terminal 2.

Step 907 , after receiving the first response message, the LoRa terminal 2 sends the second response message to the LoRa terminal 1 .

Here, LoRa terminal 1 and LoRa terminal 2 complete the three-way handshake.

Step 908, the LoRa terminal 1 sends a signal S4 to the LoRa gateway.

Step 909 , when the LoRa gateway receives the signal S4 , it sends a first response message to the LoRa terminal 1 .

Step 910: After receiving the first response message, the LoRa terminal 1 sends a second response message to the LoRa gateway.

Here, the LoRa gateway determines whether it is a LoRa gateway according to the signal transmission end identifier in the signal S4, and if it is a LoRa gateway, it performs corresponding processing according to the operation instruction.

Step 911: When the LoRa terminal 2 has not completed the three-way handshake with the LoRa terminal 3, the LoRa terminal 3 will generate a signal S-P1, wherein the signal S-P1 contains the address of the LoRa terminal 1.

Step 912: After the LoRa terminal 1 receives the signal S-P1, it sends a first response message to the LoRa terminal 3.

Step 913 , after receiving the first response message, the LoRa terminal 3 sends the second response message to the LoRa terminal 1 .

It should be noted that the LoRa terminal 1 and the LoRa terminal 3 complete the three-way handshake, and enter step 908 .

Step 914: When the LoRa destination terminal has not completed the three-way handshake with the LoRa terminal 3, the LoRa destination terminal will generate a signal S-P2, wherein the signal S-P2 contains the address of the LoRa terminal 2.

Step 915: Determine whether the LoRa terminal 2 completes the three-way handshake with the LoRa destination terminal.

Here, after the LoRa terminal 2 completes the three-way handshake with the LoRa destination terminal, step 905 is entered.

Step 916: After the LoRa terminal 3 has not completed the three-way handshake with the LoRa destination terminal, the LoRa destination terminal will send a signal S-P3 to the LoRa terminal 1, wherein the signal S-P3 contains the address of the LoRa terminal 1.

Step 917: After the LoRa terminal 1 receives the signal S-P3, it sends a first response message to the LoRa destination terminal.

Step 918 , after receiving the first response message, the LoRa destination terminal sends a second response message to the LoRa terminal 1 .

Here, after the LoRa terminal 1 completes the three-way handshake with the LoRa destination terminal, step 908 is entered.

An embodiment of the present invention provides a communication method for receiving a downlink signal sent by a first upper-level network device; wherein the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate; the first The upper-level network device includes a LoRa gateway, or a second LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal; according to the downlink signal, determine whether the first LoRa terminal itself is the target terminal; Corresponding to determining that the first LoRa terminal itself is the target terminal, execute the operation instruction in the downlink signal; Corresponding to determining that the first LoRa terminal itself is not the target terminal, forward the downlink signal to a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal. Therefore, it can solve the problem that the LoRa network deployment cost is high, and the data is easily lost due to the long distance or other interference, and the stability of data transmission cannot be guaranteed, and the stability of the LoRa network when transmitting data can be ensured.

Embodiment 4

An embodiment of the present invention provides a communication device. FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present invention. As shown in FIG. 11 , the communication device 1100 mainly includes parts: a first receiving unit 1101 , a first determining unit 1102 and the first execution unit 1103; wherein,

The first receiving unit 1101 is configured to receive a downlink signal sent by a first upper-level network device; wherein, the downlink signal includes a target terminal identifier and an operation instruction used to instruct the target terminal to operate; the first upper-level The network device includes a LoRa gateway, or a second LoRa terminal that is closer to the LoRa gateway than the communication device 1100;

The first determining unit 1102 is configured to determine whether the communication device 1100 itself is the target terminal according to the downlink signal;

The first execution unit 1103 is configured to execute the operation instruction in the downlink signal in response to determining that the communication device 1100 itself is the target terminal; and,

Corresponding to determining that the communication device 1100 itself is not the target terminal, the downlink signal is forwarded to a third LoRa terminal that is farther from the LoRa gateway than the communication device 1100 .

Correspondingly, the first receiving unit 1101 is further configured to:

sending a first response message to the first upper-level network device; wherein, the first response message is used to instruct the communication apparatus 1100 to receive the downlink signal;

A second response message sent by the first upper-level network device is received; wherein, the second response message is used to instruct the communication apparatus 1100 to complete signal transmission with the first upper-level network device.

Exemplarily, the first determining unit 1102 is further configured to:

According to the target terminal identification in the downlink signal, determine whether the communication device 1100 has the target terminal identification, and if the communication device 1100 has the target terminal identification, determine that the communication device 1100 is the the target terminal.

Optionally, the first execution unit 1103 is further configured to:

According to a preset signal forwarding strategy, the address of a third LoRa terminal that is farther from the LoRa gateway than the communication device 1100 is obtained, and the downlink signal is forwarded to the third LoRa terminal.

Optionally, the first execution unit 1103 is further configured to:

Auto-increment the address of the communication device 1100 itself, obtain the address of a third LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal, and forward the downlink signal to the first LoRa terminal Three LoRa terminals.

Optionally, the first execution unit 1103 is further configured to:

forwarding the downlink signal to a fourth LoRa terminal; wherein, the fourth LoRa terminal is the terminal closest to the communication device 1100 and farther from the LoRa gateway than the communication device 1100;

Determine whether the third response message sent by the fourth LoRa terminal is received; wherein, the third response message is used to indicate that the fourth LoRa terminal receives the downlink signal;

Corresponding to determining that the communication apparatus 1100 receives the third response message sent by the fourth LoRa terminal, a fourth response message is sent to the fourth LoRa terminal; wherein, the fourth response message is used to indicate the communication The device 1100 completes signal transmission with the fourth LoRa terminal.

Corresponding to determining that the communication device 1100 has not received the third response message sent by the fourth LoRa terminal, the downlink signal is forwarded to the fifth LoRa terminal; wherein, the fifth LoRa terminal is a distance from the communication device 1100 times closer and farther from the LoRa gateway than the communication device 1100.

Exemplarily, the apparatus 1100 further includes: a second receiving unit 1104, a second determining unit 1105 and a second executing unit 1106; wherein,

The second receiving unit 1104 is configured to receive an uplink signal sent by a second upper-level network device; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway; the second upper-level The network device is a sixth LoRa terminal that is farther from the LoRa gateway than the communication device 1100;

The second determining unit 1105 is configured to determine whether the communication device 1100 itself is the LoRa gateway according to the uplink signal;

The second execution unit 1106 is configured to, in response to determining that the communication device 1100 itself is not the LoRa gateway, forward the uplink signal to a seventh device that is closer to the LoRa gateway than the communication device 1100. LoRa terminal.

Exemplarily, the second receiving unit 1104 is further configured to:

sending a fifth response message to the second upper-level network device; wherein the fifth response message is used to instruct the communication apparatus 1100 to receive the uplink signal;

A sixth response message sent by the second upper-level network device is received; wherein, the sixth response message is used to instruct the communication apparatus 1100 to complete signal transmission with the second upper-level network device.

Correspondingly, the second determining unit 1105 is specifically configured to:

According to the LoRa gateway identifier in the uplink signal, it is determined whether the communication device 1100 itself has the LoRa gateway identifier, and if the communication device 1100 itself does not have the target terminal identifier, it is determined that the communication device 1100 itself is not The LoRa Gateway.

Exemplarily, the second execution unit 1106 is further configured to:

According to a preset signal forwarding strategy, the address of a seventh LoRa terminal that is closer to the LoRa gateway than the communication device 1100 is obtained, and the uplink signal is forwarded to the seventh LoRa terminal.

Exemplarily, the second execution unit 1106 is further configured to:

Perform self-decrement on the address of the communication device 1100 itself, obtain the address of a seventh LoRa terminal that is closer to the LoRa gateway than the communication device 1100, and forward the uplink signal to the seventh LoRa terminal LoRa terminal.

Exemplarily, the second execution unit 1106 is further configured to:

forwarding the uplink signal to the eighth LoRa terminal; wherein, the eighth LoRa terminal is the terminal closest to the communication device 1100 and closer to the LoRa gateway than the communication device 1100;

Determine whether the seventh response message sent by the eighth LoRa terminal is received; wherein, the seventh response message is used to indicate that the eighth LoRa terminal receives the uplink signal;

Corresponding to determining that the communication device 1100 has received the seventh response message sent by the eighth LoRa terminal, the eighth response message is sent to the eighth LoRa terminal; wherein, the eighth response message is used to indicate the communication The device 1100 completes signal transmission with the eighth LoRa terminal.

Corresponding to determining that the communication device 1100 has not received the seventh response message sent by the eighth LoRa terminal, the uplink signal is forwarded to the ninth LoRa terminal; wherein, the ninth LoRa terminal is a distance from the communication device 1100 times closer and closer to the LoRa gateway than the communication device 1100.

An embodiment of the present invention provides a communication device that receives a downlink signal sent by a first upper-level network device; wherein the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate; the first The upper-level network equipment includes a LoRa gateway, or a second LoRa terminal closer to the LoRa gateway than the communication device; determining whether the communication device itself is the target terminal according to the downlink signal; corresponding to determining the the communication device itself is the target terminal, and executes the operation instruction in the downlink signal; corresponding to determining that the communication device itself is not the target terminal, forwards the downlink signal to a device that is compared with the communication device A third LoRa terminal further from the LoRa gateway. Therefore, it can solve the problem that the LoRa network deployment cost is high, and the data is easily lost due to the long distance or other interference, and the stability of data transmission cannot be guaranteed, and the stability of the LoRa network when transmitting data can be ensured.

Embodiment 5

An embodiment of the present invention provides a communication device. FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present invention. As shown in FIG. 12 , the communication device 1200 mainly includes parts: a third determining unit 1201 and a generating unit 1202 and sending unit 1203; wherein,

The third determining unit 1201 is configured to determine the LoRa terminal with the highest order according to a preset sorting strategy from among the LoRa terminals under the jurisdiction of the communication device 1200;

The generating unit 1202 is configured to generate a downlink signal; wherein, the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate;

The sending unit 1203 is configured to send the downlink signal to the LoRa terminal with the highest order.

Correspondingly, the first sending unit 1203 is further configured to:

Receive the ninth response message sent by the LoRa terminal with the highest order; wherein, the ninth response message is used to indicate that the LoRa terminal with the highest order receives the downlink signal; and,

Send a tenth response message to the LoRa terminal with the highest order; wherein, the tenth response message is used to instruct the communication device 1200 to complete signal transmission with the LoRa terminal with the highest order.

Exemplarily, the apparatus further includes: a third receiving unit 1204, a fourth determining unit 1205 and a third executing unit 1206; wherein,

The third receiving unit 1204 is used to receive the uplink signal sent by the LoRa terminal with the highest order; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway;

The fourth determining unit 1205 is configured to determine whether the communication device 1200 itself is the LoRa gateway according to the uplink signal;

The third execution unit 1206 is configured to obtain the reporting instruction in the uplink signal in response to determining that the communication device 1200 itself is the LoRa gateway.

Exemplarily, the third receiving unit 1204 is further configured to:

Send an eleventh response message to the LoRa terminal with the highest order; wherein, the eleventh response message is used to instruct the communication device 1200 to receive the uplink signal;

Receive the twelfth response message sent by the LoRa terminal with the highest order; wherein, the twelfth response message is used to instruct the communication device 1200 to complete signal transmission with the LoRa terminal with the highest order.

In a communication device provided by an embodiment of the present invention, from the LoRa terminals under the jurisdiction of the communication device itself, the LoRa terminal with the highest order is determined according to a preset sorting strategy; a downlink signal is generated; wherein the downlink signal includes a target terminal an identifier and an operation instruction for instructing the target terminal to operate; sending the downlink signal to the LoRa terminal with the highest order. Therefore, it can solve the problem that the LoRa network deployment cost is high, and the data is easily lost due to the long distance or other interference, and the stability of data transmission cannot be guaranteed, and the stability of the LoRa network when transmitting data can be ensured.

Embodiment 6

An embodiment of the present invention provides a communication terminal. FIG. 13 is a schematic structural diagram of a terminal provided by an embodiment of the present invention. As shown in FIG. 13 , the terminal 1300 at least includes a processor 1301 , a communication bus 1302 and a memory 1303 . Wherein, the communication bus 1302 is configured to realize the connection communication between these components;

The memory 1303 stores computer programs running on the processor 1301;

The processor 1301, when running the computer program, executes:

Receive a downlink signal sent by a first upper-level network device; wherein, the downlink signal includes a target terminal identifier and an operation instruction used to instruct the target terminal to operate; the first upper-level network device includes a LoRa gateway, or is associated with the The terminal 1300 is a second LoRa terminal that is closer to the LoRa gateway;

Determine whether the terminal 1300 itself is the target terminal according to the downlink signal;

Corresponding to determining that the terminal 1300 itself is the target terminal, execute the operation instruction in the downlink signal;

Corresponding to determining that the terminal 1300 itself is not the target terminal, the downlink signal is forwarded to a third LoRa terminal that is farther from the LoRa gateway than the terminal 1300 .

The processor 1301 further executes:

Receive an uplink signal sent by a second upper-level network device; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway; the second upper-level network device is compared with the terminal 1300. The sixth LoRa terminal farther from the LoRa gateway;

Determine whether the terminal 1300 itself is the LoRa gateway according to the uplink signal;

Corresponding to determining that the terminal 1300 itself is not the LoRa gateway, the uplink signal is forwarded to a seventh LoRa terminal that is closer to the LoRa gateway than the terminal 1300 .

Correspondingly, an embodiment of the present invention further provides a computer storage medium, where a communication program is stored on the computer-readable storage medium, and when the communication program is executed by a processor, the steps of the communication method provided in this embodiment are implemented.

Embodiment 7

An embodiment of the present invention provides a communication gateway 1400. FIG. 14 is a schematic structural diagram of a gateway 1400 provided by an embodiment of the present invention. As shown in FIG. 14, the gateway 1400 at least includes a processor 1401, a communication bus 1402 and Memory 1403. Wherein, the communication bus 1402 is configured to realize the connection communication between these components;

The memory 1403 stores computer programs running on the processor 1401;

The processor 1401, when running the computer program, executes:

From the LoRa terminals under the jurisdiction of the gateway 1400 itself, determine the LoRa terminal with the highest order according to the preset sorting strategy;

Generating a downlink signal; wherein, the downlink signal includes a target terminal identifier and an operation instruction for instructing the target terminal to operate;

Send the downlink signal to the LoRa terminal with the highest order.

The processor 1401 further executes:

Receive the uplink signal sent by the LoRa terminal with the highest order; wherein, the uplink signal includes a LoRa gateway identifier and a reporting instruction for reporting information to the LoRa gateway;

Determine whether the gateway 1400 itself is the LoRa gateway according to the uplink signal;

Corresponding to determining that the LoRa gateway 1400 itself is the LoRa gateway, the reporting instruction in the uplink signal is obtained.

Correspondingly, an embodiment of the present invention further provides a computer storage medium, where a communication program is stored on the computer-readable storage medium, and when the communication program is executed by a processor, the steps of the communication method provided in this embodiment are implemented.

It is to be understood that reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, rather than the embodiments of the present invention. implementation constitutes any limitation. The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. The terminal embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms. of.

The unit described above as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit; it may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may all be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integration The unit can be implemented either in the form of hardware or in the form of hardware plus software functional units.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, the execution includes: The steps of the above method embodiments; and the aforementioned storage medium includes: a removable storage device, a read only memory (Read Only Memory, ROM), a magnetic disk or an optical disk and other media that can store program codes.

Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function module and sold or used as an independent product, it may also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of software products in essence or the parts that make contributions to the prior art. The computer software products are stored in a storage medium and include several instructions for A terminal is caused to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.

The above are only the embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art who is familiar with the technical scope disclosed by the present invention can easily think of changes or substitutions. Included within the scope of protection of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (23)

1. A communication method, applied to a first LoRa terminal, the method comprising:

receiving a downlink signal sent by a first superior network device; the downlink signal comprises a target terminal identifier and an operation instruction for indicating the target terminal to operate; the first superior network device comprises an LoRa gateway or a second LoRa terminal which is closer to the LoRa gateway than the first LoRa terminal;

determining whether the first LoRa terminal is the target terminal according to the downlink signal;

executing the operation instruction in the downlink signal corresponding to the determination that the first LoRa terminal is the target terminal;

and correspondingly determining that the first LoRa terminal is not the target terminal, and forwarding the downlink signal to a third LoRa terminal which is farther away from the LoRa gateway than the first LoRa terminal.

2. The method according to claim 1, wherein after said receiving the downlink signal transmitted by the first upper network device, the method further comprises:

sending a first response message to the first superior network device; the first response message is used for indicating that the first LoRa terminal receives the downlink signal;

receiving a second response message sent by the first superior network equipment; the second response message is used for indicating that the first LoRa terminal and the first superior network device complete signal transmission.

3. The method of claim 1, wherein the determining whether the first LoRa terminal is the target terminal according to the downlink signal comprises:

and determining whether the first LoRa terminal has the target terminal identification or not according to the target terminal identification in the downlink signal, and if the first LoRa terminal has the target terminal identification, determining that the first LoRa terminal is the target terminal.

4. The method of claim 1, wherein forwarding the downlink signal to a third LoRa terminal that is further away from the LoRa gateway than the first LoRa terminal comprises:

and acquiring a third LoRa terminal which is farther from the LoRa gateway than the first LoRa terminal according to a preset signal forwarding strategy, and forwarding the downlink signal to the third LoRa terminal.

5. The method according to claim 1 or 4, wherein the forwarding the downlink signal to a third LoRa terminal that is farther away from the LoRa gateway than the first LoRa terminal comprises:

and performing self-increment on the address of the first LoRa terminal, acquiring the address of the third LoRa terminal which is farther away from the LoRa gateway than the first LoRa terminal, and forwarding the downlink signal to the third LoRa terminal.

6. The method of claim 1, wherein forwarding the downlink signal to a third LoRa terminal that is further away from the LoRa gateway than the first LoRa terminal comprises:

forwarding the downlink signal to a fourth LoRa terminal; the fourth LoRa terminal is a terminal which is closest to the first LoRa terminal and is farther from the LoRa gateway than the first LoRa terminal;

determining whether a third response message sent by the fourth LoRa terminal is received; the third response message is used to indicate that the fourth LoRa terminal receives the downlink signal;

in response to determining that the first LoRa terminal receives the third response message sent by the fourth LoRa terminal, sending a fourth response message to the fourth LoRa terminal; the fourth response message is used for indicating that the first LoRa terminal and the fourth LoRa terminal complete signal transmission;

in response to determining that the first LoRa terminal does not receive the third response message sent by the fourth LoRa terminal, forwarding the downlink signal to a fifth LoRa terminal; the fifth loRa terminal is a terminal which is next close to the first loRa terminal and is farther from the loRa gateway than the first loRa terminal.

7. The method according to any one of claims 1-6, further comprising:

receiving an uplink signal sent by a second superior network device; the uplink signal comprises an LoRa gateway identifier and a reporting instruction used for reporting information to the LoRa gateway; the second superior network device is a sixth LoRa terminal that is farther from the LoRa gateway than the first LoRa terminal;

determining whether the first LoRa terminal is the LoRa gateway or not according to the uplink signal;

and correspondingly determining that the first LoRa terminal is not the LoRa gateway, and forwarding the uplink signal to a seventh LoRa terminal which is closer to the LoRa gateway than the first LoRa terminal.

8. The method according to claim 7, wherein after said receiving the uplink signal transmitted by the second superior network device, the method further comprises:

sending a fifth response message to the second superior network device; the fifth response message is used to indicate that the first LoRa terminal receives the uplink signal;

receiving a sixth response message sent by the second superior network device; the sixth response message is used to indicate that the first LoRa terminal and the second superior network device complete signal transmission.

9. The method of claim 7, wherein the determining whether the first LoRa terminal is the LoRa gateway according to the uplink signal comprises:

and determining whether the first LoRa terminal has the LoRa gateway identification or not according to the LoRa gateway identification in the uplink signal, and if the first LoRa terminal does not have the target terminal identification, determining that the first LoRa terminal is not the LoRa gateway.

10. The method of claim 7, wherein forwarding the upstream signal to a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal comprises:

and according to a preset signal forwarding strategy, acquiring an address of the seventh LoRa terminal which is closer to the LoRa gateway than the first LoRa terminal, and forwarding the uplink signal to the seventh LoRa terminal.

11. The method according to claim 7 or 10, wherein said forwarding the upstream signal to a seventh LoRa terminal closer to the LoRa gateway than the first LoRa terminal comprises:

and performing self-subtraction on the address of the first LoRa terminal, acquiring the address of the seventh LoRa terminal which is closer to the LoRa gateway than the first LoRa terminal, and forwarding the uplink signal to the seventh LoRa terminal.

12. The method of claim 7, wherein forwarding the upstream signal to a seventh LoRa terminal that is closer to the LoRa gateway than the first LoRa terminal comprises:

forwarding the uplink signal to an eighth LoRa terminal; the eighth LoRa terminal is the terminal which is closest to the first LoRa terminal and closer to the LoRa gateway than the first LoRa terminal;

determining whether a seventh response message sent by the eighth LoRa terminal is received; wherein, the seventh response message is used to indicate that the eighth LoRa terminal receives the uplink signal;

in response to determining that the first LoRa terminal receives the seventh response message sent by the eighth LoRa terminal, sending an eighth response message to the eighth LoRa terminal; the eighth response message is used for indicating that the first LoRa terminal and the eighth LoRa terminal complete signaling;

in response to determining that the first LoRa terminal does not receive the seventh response message sent by the eighth LoRa terminal, forwarding the uplink signal to a ninth LoRa terminal; the ninth loRa terminal is a terminal which is next close to the first loRa terminal and is closer to the loRa gateway than the first loRa terminal.

13. A communication method is applied to an LoRa gateway, and comprises the following steps:

determining an LoRa terminal with the highest sequence from LoRa terminals governed by the LoRa gateway according to a preset sequencing strategy;

generating a downlink signal; the downlink signal comprises a target terminal identifier and an operation instruction for indicating the target terminal to operate;

and sending the downlink signal to the LoRa terminal with the highest sequence.

14. The method of claim 13, wherein after the sending the downlink signal to the highest-order LoRa terminal, the method further comprises:

receiving a ninth response message sent by the LoRa terminal with the highest sequence; the ninth response message is used to indicate that the LoRa terminal with the highest order receives the downlink signal;

sending a tenth response message to the LoRa terminal with the highest sequence; the tenth response message is used for indicating that the LoRa gateway and the LoRa terminal with the highest sequence complete signal transmission.

15. The method according to any one of claims 13-14, further comprising:

receiving an uplink signal sent by the LoRa terminal with the highest sequence; the uplink signal comprises an LoRa gateway identifier and a reporting instruction used for reporting information to the LoRa gateway;

determining whether the LoRa gateway is the LoRa gateway or not according to the uplink signal;

and correspondingly determining that the LoRa gateway is the LoRa gateway, and obtaining the reporting instruction in the uplink signal.

16. The method according to claim 15, wherein after the receiving the uplink signal transmitted by the highest-order LoRa terminal, the method further comprises:

sending an eleventh response message to the LoRa terminal with the highest sequence; wherein the eleventh response message is used to indicate that the LoRa gateway receives the uplink signal;

receiving a twelfth response message sent by the LoRa terminal with the highest sequence; the twelfth response message is used for indicating that the LoRa gateway and the LoRa terminal with the highest sequence complete signal transmission.

17. A communications apparatus, the apparatus comprising:

a first receiving unit, configured to receive a downlink signal sent by a first superior network device; the downlink signal comprises a target terminal identifier and an operation instruction for indicating the target terminal to operate; the first superior network device comprises an LoRa gateway or a second LoRa terminal which is closer to the LoRa gateway than the device;

a first determining unit, configured to determine whether the apparatus itself is the target terminal according to the downlink signal;

a first execution unit, configured to execute the operation instruction in the downlink signal in response to determining that the apparatus itself is the target terminal; and the number of the first and second groups,

and in response to determining that the apparatus itself is not the target terminal, forwarding the downlink signal to a third LoRa terminal that is further away from the LoRa gateway than the apparatus.

18. The apparatus of claim 17, further comprising:

the second receiving unit is used for receiving an uplink signal sent by a second superior network device; the uplink signal comprises an LoRa gateway identifier and a reporting instruction used for reporting information to the LoRa gateway; the second upper network device is a sixth LoRa terminal farther from the LoRa gateway than the apparatus;

a second determining unit, configured to determine whether the apparatus itself is the LoRa gateway according to the uplink signal;

and a second execution unit, configured to forward the uplink signal to a seventh LoRa terminal closer to the LoRa gateway than the apparatus in response to determining that the apparatus itself is not the LoRa gateway.

19. A communications apparatus, the apparatus comprising:

a third determining unit, configured to determine, according to a preset sorting policy, an LoRa terminal with a highest order from LoRa terminals governed by the apparatus itself;

a generating unit, configured to generate a downlink signal; the downlink signal comprises a target terminal identifier and an operation instruction for indicating the target terminal to operate;

and the sending unit is used for sending the downlink signal to the LoRa terminal with the highest sequence.

20. The method of claim 19, wherein the apparatus further comprises:

a third receiving unit, configured to receive an uplink signal sent by the LoRa terminal with the highest order; wherein the uplink signal comprises an identifier of the device and a reporting instruction for reporting information to the device;

a fourth determining unit, configured to determine whether the apparatus itself is the apparatus according to the uplink signal;

a third executing unit, configured to obtain the reporting instruction in the uplink signal in response to determining that the apparatus itself is the apparatus.

21. A communication terminal, characterized in that the terminal comprises a first communication bus, a first memory and a first processor; wherein,

the first communication bus is configured to realize connection communication among the components;

the first memory configured to store a computer program operable on the processor;

the first processor, when executing the computer program, is configured to perform the steps of the communication method of any of claims 1 to 12.

22. A communications gateway, characterized in that the gateway comprises a second communications bus, a second memory and a second processor; wherein,

the second communication bus is configured to realize connection communication among the components;

the second memory configured to store a computer program operable on the processor;

the second processor, when executing the computer program, is configured to perform the steps of the communication method of any of claims 13 to 16.

23. A computer storage medium, characterized in that it stores a communication program which, when executed by at least one processor, implements the steps of the method of the communication program according to any one of claims 1 to 12 or implements the steps of the method of the communication program according to any one of claims 13 to 16.

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