CN106851785B - Wireless communication method and system - Google Patents
Wireless communication method and system Download PDFInfo
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- CN106851785B CN106851785B CN201710153202.3A CN201710153202A CN106851785B CN 106851785 B CN106851785 B CN 106851785B CN 201710153202 A CN201710153202 A CN 201710153202A CN 106851785 B CN106851785 B CN 106851785B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
The present invention relates to the field of communications, and in particular, to a wireless communication method and system. The method comprises the steps of configuring frequencies for newly added Lora terminals to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth; the Lora terminal searches for the Lora gateway according to the frequency in the frequency ordered set in sequence until a wireless signal of the Lora gateway is obtained; and the Lora terminal establishes wireless communication connection with the Lora gateway. The convenience of expanding capacity of the wireless communication system is improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a wireless communication method and system.
Background
The LoRa wireless communication system is a long-distance low-power consumption wireless communication system, and the system consists of a LoRa gateway and a LoRa node. The system adopts a system based on LoRaTMThe wireless spread spectrum communication transceiver of the patent modulation technology has strong anti-interference capability, reliability and good link budget. The method is mainly applied to the field of wireless communication in long-distance and low-power-consumption scenes.
However, for node intensive application scenarios (such as residential water meter or electric meter information acquisition), in the conventional LoRa wireless communication system in the 'wake-up' working mode, when the number of nodes needs to be increased, the node ids that need to be increased must be added one by one to the corresponding node id list of the gateway that can cover the nodes, and the wake-up path is fixed; if the path is not fixed, all gateways need to be called when a node is awakened, a large amount of power consumption is increased, and the efficiency is extremely low; in the process, the nodes need to be manually surveyed to which gateway signals can cover, a node id list needs to be manually added, the steps are complicated, and the system capacity is difficult to expand. When the coverage range is expanded, the list of the node ids which need to be expanded and covered needs to be copied to each newly added gateway manually, and the steps are complicated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a wireless communication method and system are provided to improve the convenience of capacity expansion.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides a wireless communication method, which comprises the following steps:
s1, configuring frequencies for the newly-added Lora terminal to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth;
s2, the Lora terminal searches for the Lora gateway according to the frequency in the frequency ordered set in sequence until a wireless signal of the Lora gateway is obtained;
s3, the Lora terminal establishes wireless communication connection with the Lora gateway.
The present invention also provides a wireless communication system including:
the first configuration module is used for configuring frequencies for the newly added Lora terminal to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth;
the acquisition module is used for searching the Lora gateway by the Lora terminal according to the frequency in the frequency ordered set in sequence until a wireless signal of the Lora gateway is acquired;
and the first connection module is used for establishing wireless communication connection between the Lora terminal and the Lora gateway.
The invention has the beneficial effects that: the newly added Lora terminal can automatically search the currently available Lora gateway according to the pre-configured frequency, thereby automatically adding the currently available Lora gateway into the existing wireless communication system and improving the convenience of the wireless communication system in capacity expansion.
Drawings
Fig. 1 is a flow chart of an embodiment of a wireless communication method provided by the present invention;
fig. 2 is a block diagram of a wireless communication system according to an embodiment of the present invention;
fig. 3 is a block diagram of a structure of a Lora terminal according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a Lora terminal communicating with an NFC handset;
fig. 5 is a schematic diagram of a connection between a Lora terminal and a Lora gateway;
fig. 6 is a schematic diagram of an automatic search of available Lora gateways by a Lora terminal;
fig. 7 is a further block diagram of an embodiment of a wireless communication system according to the present invention.
Description of reference numerals:
1. a Lora terminal; 11. a Lora antenna; 12. a Lora wireless transceiver; 13. a processor;
14. an NFC module; 141. an NFC chip; 142. an NFC induction coil;
2. an NFC handheld device;
3. a Lora gateway; 31. a first Lora gateway; 32. a second Lora gateway; 33. a third Lora gateway;
40. a first configuration module; 401. an acquisition unit; 402. a configuration unit; 42. an acquisition module;
43. a first connection module; 431. a connection unit; 432. a communication unit; 44. a search module;
45. a second connection module; 46. a module is newly added; 47. adding a module; 48. a second configuration module; 49. a query module; 50. and setting a module.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the Lora terminal can be automatically switched to the frequency covered by the effective Lora gateway wireless signal according to the configured frequency to work, so that only the Lora terminal needs to be newly added, the effective frequency is configured for the Lora terminal, the capacity expansion can be completed, and the convenience of the capacity expansion is improved.
Referring to fig. 1 to 7 of the drawings,
as shown in fig. 1, the present invention provides a wireless communication method, including:
s1, configuring frequencies for the newly-added Lora terminal to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth;
s2, the Lora terminal searches for the Lora gateway according to the frequency in the frequency ordered set in sequence until a wireless signal of the Lora gateway is obtained;
s3, the Lora terminal establishes wireless communication connection with the Lora gateway.
Further, the S1 specifically includes:
acquiring the optimal tuning frequency of the Lora terminal;
and configuring corresponding frequencies for the Lora terminal according to the optimal tuning frequency to form a frequency ordered set.
As can be seen from the above description, configuring the Lora gateway frequency within the search range of the Lora terminal according to the optimal tuning frequency of the Lora terminal is beneficial to achieving the optimal communication effect.
Further, still include:
when the Lora terminal is disconnected from the Lora gateway,
the Lora terminal searches for the Lora gateway according to other frequencies except the frequency corresponding to the Lora gateway in the frequency ordered set until a wireless signal of another Lora gateway is obtained;
and the Lora terminal establishes wireless communication connection with the other Lora gateway.
As can be seen from the above description, the reliability of the wireless communication system is improved.
Further, still include:
adding a Lora gateway;
and adding the frequency of the newly added Lora gateway to a frequency ordered set corresponding to the Lora terminal in a preset range.
As can be seen from the above description, the wireless signal coverage area of the Lora gateway in the wireless communication system is conveniently extended.
Further, still include:
the Lora terminal comprises an NFC module;
and the NFC handheld equipment configures the parameters of the Lora terminal through the NFC module.
Further, still include:
the Lora terminal comprises an NFC module;
and the NFC handheld equipment inquires the data stored in the Lora terminal through the NFC module.
According to the description, the NFC handheld device is communicated with the Lora terminal, point-to-point field parameter configuration and data query can be conveniently carried out without connecting a communication cable, and the trouble that other nodes are interfered by a single node configuration process is avoided.
Further, still include:
the Lora terminal comprises an NFC module;
the NFC handheld equipment sets the state of the Lora terminal through the NFC module; the states include an activated state and an inactivated state.
As can be seen from the above description, the power consumption of the wireless communication system can be controlled according to the actual situation by setting the state of the Lora terminal by the NFC handheld device.
Further, the S4 specifically includes:
more than two Lora terminals establish wireless communication connection with one Lora gateway in a point-to-point mode;
more than two the Lora terminal timesharing with a Lora gateway communication.
As can be seen from the above description, a plurality of Lora terminals connected to the same Lora gateway do not interfere with each other, which is beneficial to improving communication efficiency.
As shown in fig. 2, the present invention also provides a wireless communication system, including:
a first configuration module 40, configured to configure a frequency for the newly added Lora terminal, so as to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth;
the obtaining module 42 is configured to search for the Lora gateway by the Lora terminal according to the frequencies in the frequency ordered set in sequence until a wireless signal of the Lora gateway is obtained;
a first connection module 43, configured to establish a wireless communication connection between the Lora terminal and the Lora gateway.
Further, still include:
the searching module 44 is configured to, when the Lora terminal is disconnected from the Lora gateway, search the Lora gateway by the Lora terminal according to the frequencies other than the frequency corresponding to the Lora gateway in the frequency ordered set until a wireless signal of another Lora gateway is obtained;
a second connection module 45, configured to establish a wireless communication connection between the Lora terminal and the another Lora gateway;
a newly-added module 46 for adding a Lora gateway;
an adding module 47, configured to add the frequency of the newly added Lora gateway to a frequency ordered set corresponding to the Lora terminal within a preset range;
a second configuration module 48, configured to configure, by the NFC handheld device, parameters of the Lora terminal through the NFC module; the Lora terminal comprises an NFC module;
the query module 49 is used for the NFC handheld device to query the data stored in the Lora terminal through the NFC module;
the setting module 50 is used for setting the state of the Lora terminal by the NFC handheld device through the NFC module; the states include an activated state and an inactivated state;
the first configuration module 40 comprises an acquisition unit 401 and a configuration unit 402; the obtaining unit 401 is configured to obtain an optimal tuning frequency of the Lora terminal; the configuration unit 402 is configured to configure a corresponding frequency for the Lora terminal according to the optimal tuning frequency to form a frequency ordered set;
the first connection module 43 includes a connection unit 431 and a communication unit 432; a connection unit 431, configured to establish a wireless communication connection between the two or more Lora terminals and the Lora gateway in a point-to-point manner; a communication unit 432, configured to communicate with the Lora gateway in a time-sharing manner for two or more Lora terminals.
The first embodiment of the invention is as follows:
s1, adding a Lora terminal 1; the Lora terminal 1 includes an NFC module 14;
as shown in fig. 3, the Lora terminal 1 includes a Lora antenna 11, a Lora wireless transceiver 12, a processor 13, and an NFC module 14; the NFC module 14 includes an NFC chip 141 and an NFC induction coil 142.
S2, setting the state of the Lora terminal 1 by the NFC handheld device 2 through the NFC module 14; the states include an activated state and an inactivated state;
the Lora terminal 1 is in an inactive state when leaving a factory, and modules such as the processor 13 and the Lora wireless transceiver 12 in the Lora terminal 1 are in a deep sleep mode at the time, so that the power saving effect is the most achieved; when a newly added Lora terminal needs to be used, as shown in fig. 4, a user sets the state of the Lora terminal to be an activated state by operating the NFC handheld device 2, so that the Lora terminal can normally work. Meanwhile, when the Lora terminal 1 is not needed to be used in a later period of time, the state of the Lora terminal 1 can be set to be an inactive state through the NFC handheld device 2, and therefore power consumption of a wireless communication system can be effectively reduced. The state of the Lora terminal is set through the NFC handheld device, and therefore power consumption of the wireless communication system can be controlled according to actual conditions.
S3, configuring frequencies for the newly added Lora terminal 1 to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth; the method specifically comprises the following steps:
s31, acquiring the optimal tuning frequency of the Lora terminal 1;
s32, configuring corresponding frequencies for the Lora terminal according to the optimal tuning frequency to form a frequency ordered set;
the configured frequency point interval is 2 times of signal bandwidth, so that adjacent signal interference can be fully avoided; the configured frequency point range is near the optimal tuning frequency of the Lora antenna 11, and the optimal wireless transmitting and receiving effects can be achieved.
S4, the Lora terminal 1 searches the Lora gateway 3 according to the frequency in the frequency ordered set in sequence until a wireless signal of the Lora gateway is obtained;
the processor 13 writes the initial frequency (the minimum frequency in the frequency ordered set) and other fixed wireless parameters, such as signal bandwidth, spreading factor parameters, etc., into corresponding registers in the Lora wireless transceiver 12 through the communication bus, and controls the Lora wireless transceiver 12 to turn on the receiver at the initial frequency to receive the wireless signal of the Lora gateway 3. If the wireless signal of the Lora gateway 3 meeting the system protocol specification is not received at the initial frequency, the processor 13 closes the receiver of the Lora wireless transceiver 12 through the communication bus, then writes the next frequency in the frequency ordered set into the register corresponding to the Lora wireless transceiver 12, then opens the receiver for signal reception, and so on, and searches the network cyclically until the wireless signal of the Lora gateway 3 is obtained.
S5, establishing wireless communication connection between the Lora terminal 1 and the Lora gateway 3; the method specifically comprises the following steps: more than two Lora terminals 1 establish wireless communication connection with one Lora gateway 3 in a point-to-point mode; the more than two Lora terminals 1 communicate with the Lora gateway 3 in a time-sharing manner;
wherein, as shown in fig. 5, Lora terminal 1 and Lora gateway 3 are the star type and distribute, can not communicate between the Lora terminal, and communicate with this Lora gateway 3 with 1 timesharing of Lora terminal that same Lora gateway 3 links to each other for Lora terminal 1 does not have any other communication interference in the in-process that lies in Lora gateway 3 communication, is favorable to improving communication efficiency.
S6, adding a Lora gateway 3; and adding the frequency of the newly-added Lora gateway 3 to a frequency ordered set corresponding to the Lora terminal 1 in a preset range.
The frequency of the newly added Lora gateway is different from the frequency of the adjacent Lora gateway, so that the purpose of improving the coverage range of wireless signals is achieved; and meanwhile, configuring the Lora terminals in the wireless signal coverage range of the newly added Lora gateway, including adding the frequencies of the newly added Lora gateway to the corresponding frequency ordered set, so that the Lora terminals originally positioned at the wireless signal dead angles and other newly added Lora terminals can establish communication connection with the newly added Lora gateway.
S7, configuring the parameters of the Lora terminal by the NFC handheld device through the NFC module; and the NFC handheld equipment inquires the data stored in the Lora terminal through the NFC module.
As shown in fig. 3 and 4, a user operates a setting or query interface in the NFC handheld device 2, the NFC handheld device 2 is close to the NFC induction coil 142 of the Lora terminal, the NFC handheld device 2 loads corresponding operation information on a short-distance wireless signal, the operation information is sent to the NFC chip 141 in the Lora terminal through a coil electromagnetic induction principle, the NFC chip 141 generates an interrupt signal to wake up the processor 13, the processor 13 reads an operation signal demodulated by the NFC chip 141 through a communication bus to perform corresponding processing, the processor 13 writes a processing result back to the NFC chip 141 through the communication bus after the processing is completed, and the NFC chip 141 modulates the result information to allow the NFC handheld device 2 to read the operation result. And the NFC handheld equipment is convenient for a user to carry out secondary configuration and query on the Lora terminal. In addition, by adopting the short-distance wireless communication mode, point-to-point field parameter configuration can be conveniently carried out without connecting a communication cable, and the trouble that other Lora terminals are interfered when a single Lora terminal is configured is avoided.
As can be seen from the above description, the present embodiment conveniently achieves the capacity expansion and the wireless signal coverage area expansion of the existing Lora wireless communication system.
The second embodiment of the invention is as follows:
on the basis of the first embodiment, the method further comprises the following steps:
when the Lora terminal is disconnected from the Lora gateway,
the Lora terminal searches for the Lora gateway according to other frequencies except the frequency corresponding to the Lora gateway in the frequency ordered set until a wireless signal of another Lora gateway is obtained;
and the Lora terminal establishes wireless communication connection with the other Lora gateway.
As shown in fig. 6, the frequencies of the first Lora gateway 31, the second Lora gateway 32, and the third Lora gateway 33 sequentially increase, and the Lora terminal 1 may receive their wireless signals under normal conditions. When the Lora terminal 1 is started, the wireless signal of the Lora gateway 1 is searched according to the minimum frequency in the frequency ordered set, namely the frequency of the Lora gateway 1, and wireless communication connection is established between the Lora terminal 1 and the Lora gateway 1. However, at a certain time, a wireless signal barrier appears between the first Lora gateway 31, the second Lora gateway 32 and the Lora terminal 1, and the wireless communication connection between the Lora terminal 1 and the first Lora gateway is interrupted. In order to ensure that the Lora terminal 1 can continue to work normally, the Lora terminal 1 sequentially searches for the Lora gateways according to the frequencies in the frequency ordered set until receiving the wireless signal of the third Lora gateway 33, and establishes wireless communication connection with the third Lora gateway 33.
According to the description, the plurality of independent working LoRa terminals can perform frequency hopping roaming on the Lora gateways with different working frequencies, and effective gateways are searched for network access communication; wherein, part of the Lora terminals are in the wireless signal coverage range of two or more Lora gateways, and the Lora terminals can access the network through other Lora gateways besides having the network path which is currently accessed to the network; when the Lora gateway currently connected with the Lora terminal is interrupted due to the influence of objective factors, the Lora terminal can exchange data with other gateways capable of covering the Lora terminal through frequency hopping roaming attempts, which is equivalent to a plurality of backup paths entering the whole network in the system for the Lora terminal, and is favorable for improving the reliability of the wireless communication system.
The third embodiment of the invention is as follows:
as shown in fig. 7, the first configuration module 40 configures frequencies for the newly added Lora terminal to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth; an obtaining unit 401 in the first configuration module 40 obtains an optimal tuning frequency of the Lora terminal; a configuration unit 402 configures a corresponding frequency for the Lora terminal according to the optimal tuning frequency to form a frequency ordered set;
the obtaining module 42 makes the Lora terminal search the Lora gateways according to the frequencies in the frequency ordered set in sequence until obtaining a wireless signal of the Lora gateway; the first connection module 43 enables the Lora terminal to establish wireless communication connection with the Lora gateway; the connection unit 431 in the first connection module 43 enables two or more Lora terminals to establish wireless communication connection with one Lora gateway in a point-to-point manner; the communication unit 432 enables two or more Lora terminals to communicate with one Lora gateway in a time-sharing manner;
when the Lora terminal is disconnected from the Lora gateway, the searching module 44 enables the Lora terminal to search the Lora gateway according to other frequencies except the frequency corresponding to the Lora gateway in the frequency ordered set until a wireless signal of another Lora gateway is obtained; the second connection module 45 enables the Lora terminal to establish wireless communication connection with the other Lora gateway;
the adding module 46 adds an Lora gateway; the adding module 47 adds the frequency of the newly added Lora gateway to a frequency ordered set corresponding to the Lora terminal within a preset range;
a second configuration module 48 enables the NFC handheld device to configure the parameters of the Lora terminal through the NFC module; the Lora terminal comprises an NFC module; the query module 49 enables the NFC handheld device to query the data stored in the Lora terminal through the NFC module; the setting module 50 enables the NFC handheld device to set the state of the Lora terminal through the NFC module; the states include an activated state and an inactivated state.
In summary, the present invention provides a wireless communication method and system, in which a newly added Lora terminal can automatically search a currently available Lora gateway according to a pre-configured frequency, so as to automatically add the newly added Lora terminal to an existing wireless communication system, thereby improving the convenience of expanding the capacity of the wireless communication system. Furthermore, according to the optimal tuning frequency of the Lora terminal, the Lora gateway frequency in the search range of the Lora terminal is configured, so that the optimal communication effect can be achieved. Further, the reliability of the wireless communication system is improved. Further, the wireless signal coverage area of the Lora gateway in the wireless communication system is conveniently expanded. Furthermore, the NFC handheld device is communicated with the Lora terminal, point-to-point field parameter configuration and data query can be conveniently carried out without connecting a communication cable, and the trouble that other nodes are interfered by a single node configuration process is avoided. Furthermore, the state of the Lora terminal is set through the NFC handheld device, and therefore power consumption of the wireless communication system can be controlled according to actual conditions. Furthermore, a plurality of Lora terminals connected with the same Lora gateway do not interfere with each other, which is beneficial to improving the communication efficiency.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. A method of wireless communication, comprising:
s1, configuring frequencies for the newly-added Lora terminal to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth; the S1 specifically includes: acquiring the optimal tuning frequency of the Lora terminal; configuring corresponding frequencies for the Lora terminal according to the optimal tuning frequency to form a frequency ordered set;
s2, the Lora terminal searches for the Lora gateway according to the frequency in the frequency ordered set in sequence until a wireless signal of the Lora gateway is obtained;
s3, establishing wireless communication connection between the Lora terminal and the Lora gateway;
wherein, the method also comprises the following steps,
adding a Lora gateway;
and adding the frequency of the newly added Lora gateway to a frequency ordered set corresponding to the Lora terminal in a preset range.
2. The wireless communication method according to claim 1, further comprising S4:
when the Lora terminal is disconnected from the Lora gateway,
the Lora terminal searches for the Lora gateway according to other frequencies except the frequency corresponding to the Lora gateway in the frequency ordered set until a wireless signal of another Lora gateway is obtained;
and the Lora terminal establishes wireless communication connection with the other Lora gateway.
3. The wireless communication method according to claim 1, further comprising:
the Lora terminal comprises an NFC module;
and the NFC handheld equipment configures the parameters of the Lora terminal through the NFC module.
4. The wireless communication method according to claim 1, further comprising:
the Lora terminal comprises an NFC module;
and the NFC handheld equipment inquires the data stored in the Lora terminal through the NFC module.
5. The wireless communication method according to claim 1, further comprising:
the Lora terminal comprises an NFC module;
the NFC handheld equipment sets the state of the Lora terminal through the NFC module; the states include an activated state and an inactivated state.
6. The wireless communication method according to claim 2, wherein the S4 is specifically:
more than two Lora terminals establish wireless communication connection with one Lora gateway in a point-to-point mode;
more than two the Lora terminal timesharing with a Lora gateway communication.
7. A wireless communication system, comprising:
the first configuration module is used for configuring frequencies for the newly added Lora terminal to form a frequency ordered set; the spacing of the frequencies in the ordered set of frequencies is twice the signal bandwidth;
the acquisition module is used for searching the Lora gateway by the Lora terminal according to the frequency in the frequency ordered set in sequence until a wireless signal of the Lora gateway is acquired;
the first connection module is used for establishing wireless communication connection between the Lora terminal and the Lora gateway;
wherein, the method also comprises the following steps,
the newly-added module is used for newly-adding the Lora gateway;
the adding module is used for adding the frequency of the newly-added Lora gateway to a frequency ordered set corresponding to the Lora terminal within a preset range;
configuring the frequency for the newly-added Lora terminal, wherein the forming of the frequency ordered set comprises the following steps:
acquiring the optimal tuning frequency of the Lora terminal;
and configuring corresponding frequencies for the Lora terminal according to the optimal tuning frequency to form a frequency ordered set.
8. The wireless communication system of claim 7, further comprising:
the searching module is used for searching the Lora gateway according to other frequencies except the frequency corresponding to the Lora gateway in the frequency ordered set until a wireless signal of another Lora gateway is obtained when the Lora terminal is disconnected from the Lora gateway in communication;
the second connection module is used for establishing wireless communication connection between the Lora terminal and the other Lora gateway;
the second configuration module is used for configuring the parameters of the Lora terminal by the NFC handheld device through the NFC module; the Lora terminal comprises an NFC module;
the query module is used for the NFC handheld equipment to query the data stored in the Lora terminal through the NFC module;
the setting module is used for setting the state of the Lora terminal through the NFC module by the NFC handheld equipment; the states include an activated state and an inactivated state;
the first configuration module comprises an acquisition unit and a configuration unit; the acquiring unit is used for acquiring the optimal tuning frequency of the Lora terminal; the configuration unit is configured to configure a corresponding frequency for the Lora terminal according to the optimal tuning frequency to form a frequency ordered set;
the first connection module comprises a connection unit and a communication unit; the connection unit is used for establishing wireless communication connection between more than two Lora terminals and one Lora gateway in a point-to-point mode; and the communication unit is used for communicating with the Lora gateway by more than two Lora terminals in a time-sharing manner.
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| CN109308059A (en) * | 2018-10-31 | 2019-02-05 | 南宁学院 | A kind of automatic control aquatic farm control system |
| CN110072247A (en) * | 2019-04-19 | 2019-07-30 | 武汉所为科技有限公司 | A kind of LoRa network of low-power consumption and real-time |
| CN111918343A (en) * | 2019-05-08 | 2020-11-10 | 深圳长城开发科技股份有限公司 | Network switching method and device and computer storage medium |
| CN111988780A (en) * | 2020-08-31 | 2020-11-24 | 歌尔科技有限公司 | Information transmission method, LoRa gateway, network access method and intelligent doorbell |
| CN112660201A (en) * | 2020-12-31 | 2021-04-16 | 哈尔滨市科佳通用机电股份有限公司 | Wireless locomotive signal code sending system and communication method thereof |
| CN112769962B (en) * | 2021-04-07 | 2021-08-10 | 上海顺舟智能科技股份有限公司 | Parameter distribution method, equipment and storage medium for application of Internet of things |
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