CN114760293B

CN114760293B - Internet of things system and standby channel using method thereof

Info

Publication number: CN114760293B
Application number: CN202011584182.3A
Authority: CN
Inventors: 薄占平
Original assignee: Acer Communications Co ltd; Acer Inc
Current assignee: Acer Communications Co ltd; Acer Inc
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2024-01-19
Anticipated expiration: 2040-12-28
Also published as: CN114760293A

Abstract

The invention provides an Internet of things system and a standby channel using method thereof. The first network hub device is connected to at least one first Internet of things device, and the second network hub device is connected to at least one second Internet of things device. The access node is connected with the first network hub device and the second network hub device. The Internet of things service server is connected with the first network line concentration device and the second network line concentration device through the access node. In response to an abnormal connection between the first network hub device and the access node, the first network hub device establishes a connection with the second network hub device through the standby frequency channel, and the first internet of things device reports internet of things data to the internet of things service server through the standby frequency channel.

Description

Internet of things system and standby channel using method thereof

Technical Field

The invention relates to the technology of the internet of things (Internet of Things, ioT), in particular to an internet of things system and a standby channel using method thereof.

Background

In recent years, with the evolution and innovation of technology, articles capable of connecting to a network are not limited to only computer devices or personal mobile communication devices, and more internet of things devices can report sensing data or interact with an application service platform through various communication technologies. The system can realize more innovation and industrial application under the support of the internet of things technology by means of artificial intelligence, big data collection and analysis and block refining. Such as environmental monitoring, intelligent factories, intelligent transportation, intelligent households, intelligent agriculture, health care, intelligent living, etc., the internet of things application service is everywhere seen. From the other side, with the progress and development of cloud computing technology, artificial intelligence and big data application, the scale and application range of the internet of things are rapidly growing, and 500 hundred million internet of things devices can be expected in 2020.

With the increasing number of devices in the internet of things, a huge burden is imposed on a base station and a backhaul Network (backhaul Network) in the current telecommunication Network architecture. In other words, when the number of networking devices around the base station is greatly increased, the base station and the backhaul network in the existing telecommunication network architecture are limited by the bandwidth limitation of the backhaul network and the processing power of the base station.

In other words, with the tremendous increase in the number of devices in the internet of things, a reliable and stable communication network architecture is required to be used as a support, so that various application services applying the internet of things technology can acquire correct and correct data from the devices in the internet of things. Otherwise, even the excellent internet of things application service cannot realize the strong and convenient application function under the condition of lacking correct data. That is, a reliable network transmission environment is a necessary condition for the internet of things application service. In order to ensure that the internet of things device can correctly report data, many network problems such as coverage of wireless signals, limitation of communication bandwidth, communication quality, data collision, and data security problems need to be considered.

As the number of devices of the internet of things increases, there are many practical challenges to providing a reliable network transmission environment for services of the internet of things. Therefore, how to provide a reliable network transmission environment for the service of the internet of things has become a very important and widely discussed issue.

Disclosure of Invention

In view of this, the present invention provides an internet of things system and a standby channel usage method, which can make the data transmission of the internet of things more reliable.

The embodiment of the invention provides an Internet of things system, which comprises a first network hub device, a second network hub device, at least one access node and an Internet of things service server. The first network hub device is connected to at least one first Internet of things device, and the second network hub device is connected to at least one second Internet of things device. The access node is connected with the first network hub device and the second network hub device. The Internet of things service server is connected with the first network line concentration device and the second network line concentration device through the access node. In response to an abnormal connection between the first network hub device and the access node, the first network hub device establishes a connection with the second network hub device through the standby frequency channel, and the first internet of things device reports internet of things data to the internet of things service server through the standby frequency channel between the first network hub device and the second network hub device.

From another point of view, the embodiment of the invention provides a standby channel using method which is applicable to an internet of things system. The method comprises the following steps. Establishing a connection between at least one first Internet of things device and a first network hub device, and establishing a connection between the first network hub device and at least one access node. Establishing a connection between at least one second Internet of things device and a second network hub device, and establishing a connection between the second network hub device and at least one access node. In response to an abnormality in connection between the first network hub device and at least one access node, a connection is established between the first network hub device and the second network hub device through a standby frequency channel. And reporting the Internet of things data of the first Internet of things device to the Internet of things service server through a standby frequency channel between the first network hub device and the second network hub device.

Based on the above, in the embodiment of the invention, the load of the base station and the backhaul can be greatly reduced by configuring the plurality of network hub devices between the internet of things device and the base station. When the connection between a certain network hub device and a base station is abnormal, the network hub device can be connected to another network hub device through the standby frequency channel, so that the internet of things data of a plurality of internet of things devices managed by the network hub device can be reported to the internet of things service server as soon as possible through the standby frequency channel and the other network hub device. Therefore, the success rate and the reliability of the data of the Internet of things can be greatly improved.

In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

FIG. 1 is a schematic diagram of an Internet of things system according to an embodiment of the invention;

fig. 2A and fig. 2B are schematic application diagrams of an internet of things system according to an embodiment of the invention;

FIG. 3 is a block diagram of a network hub according to an embodiment of the invention;

FIG. 4 is a flow chart of a communication method of an Internet of things system according to an embodiment of the invention;

fig. 5A and fig. 5B are schematic diagrams illustrating adjustment of a data reporting period of an internet of things device according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a method for using a backup channel according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a standby channel usage method according to an embodiment of the invention.

Description of the reference numerals

10, internet of things system

111_1 to 111_N, 112_1 to 112_M, 113_1 to 113_3, internet of things device

120. 120 (1), 120 (2), 120 (3) access nodes

131. 132, 133 network line concentration device

31 communication circuit

32 storage device

33 processor(s)

140, service server of Internet of things

101 core network

102 ISP network

150 backhaul line

d1, internet of things data

d2 parameter configuration instruction

BF1, BF2 standby frequency channel

P1 to P3 data transmission paths

S401-S404 steps

Detailed Description

Some embodiments of the invention will be described in detail below with reference to the drawings, wherein reference to the following description refers to the same or similar elements appearing in different drawings. These examples are only a part of the invention and do not disclose all possible embodiments of the invention. Rather, these embodiments are merely examples of methods and systems of the present invention.

Fig. 1 is a schematic diagram of an internet of things system according to an embodiment of the invention. Referring to fig. 1, the internet of things system 10 includes a plurality of network hub devices 131 and 132, an access node 120, and an internet of things service server 140.

The network hub devices 131, 132 are each connected to a group of internet of things devices. The network hub device 131 (i.e., the first network hub device) is connected to N internet of things devices 111_1 to 111_n (i.e., the first internet of things device), where N is an integer greater than or equal to 1. The network hub device 132 (i.e. the second network hub device) is connected to M internet of things devices 112_1 to 112_m (i.e. the second internet of things device), wherein M is an integer greater than or equal to 1.

The network hub devices 131 and 132 are connected between the access node 120 and the devices 111_1 to 111_n and 112_1 to 112_m of the internet of things. Specifically, the devices 111_1 to 111_n and 112_1 to 112_m of the internet of things can establish communication connection with the network hub devices 131 and 132 through wired or wireless communication standards. For example, the internet of things devices 111_1-111_n, 112_1-112_m can establish a communication connection with the network hub devices 131, 132 via a WiFi standard, a Bluetooth (Bluetooth) standard, a ZigBee wireless communication standard, a Long Range low power wireless communication (LoRa) standard, an ethernet standard, an RS485 standard or other communication standards, which is not limited in the present invention.

The internet of things devices 111_1 to 111_n, 112_1 to 112_m have a networking function, and can communicate with other electronic devices through a wired or wireless communication technology. In one embodiment, the devices 111_1-111_N and 112_1-112_M can report the sensing data, the measurement data or other types of data back to the server 140. In various applications of the internet of things, the internet of things devices 111_1 to 111_n and 112_1 to 112_m may be implemented by using general electronic equipment, for example, the internet of things devices 111_1 to 111_n and 112_1 to 112_m may be home appliances, air conditioning equipment or lighting equipment. Or, the internet of things devices 111_1 to 111_n and 112_1 to 112_m may be environmental monitoring devices having one or more sensors such as temperature, humidity, air pressure, gas, ultraviolet light, and the like. Alternatively, the devices 111_1 to 111_n and 112_1 to 112_m of the internet of things may be various measuring instruments, such as water meters, gas meters, electric meters, and the like. However, the internet of things devices 111_1 to 111_n, 112_1 to 112_m in the present embodiment are not limited to the above examples.

The access node 120 is connected to the core network 101 and is configured to provide wireless or wired communication services to the devices 111_1-111_n, 112_1-112_m. In this disclosure, the term "access node" may represent various embodiments. For example, the access Node 120 may be a base station deployed by a telecommunications network operator, such as a WiMAX base station, a GSM radio Base Transceiver Station (BTS), a Universal Mobile Telecommunications System (UMTS) base station (Node B), an LTE evolved Node B (eNB), a 5G base station (gNB), or a base station supporting other wireless communication standards. From the other side, access node 120 may be a Macro (Macro cell) base station, a Micro (Micro cell) base station, a Pico (Pico cell) base station, or a femto (femto cell) base station, as the present invention is not limited in this respect. In addition, the access node 120 may also be a DSL modem (Digital Subscriber Line modem, DSL modem), cable modem, gateway, or the like deployed by an internet network provider, which is not limited by the present invention.

In addition, the network hub devices 131, 132 may be coupled to the access node 120 via a wired or wireless communication standard. For example, the network hub devices 131, 132 may be connected to the access node 120 via a WiFi standard, a Long Range low power wireless communication (LoRa) standard, an ethernet standard, a narrowband internet of things (Narrow Band Internet of Thing, NB-IoT) standard, an LTE standard, a 5G standard, or other communication standards, which the present invention is not limited to. In an embodiment, the network hub devices 131 and 132 can be further used as signal relay stations for wired connection or wireless connection to extend the communication service range, so that the deployment locations of the internet of things devices 111_1 to 111_n and 112_1 to 112_m are not limited by the geographic location of the access node 120. In addition, fig. 1 illustrates that the network hub devices 131 and 132 may be connected to the same access node 120, but the present invention is not limited thereto. In other embodiments, the network hubs 131, 132 may be connected to different access nodes.

It should be noted that, in the application of the internet of things service, the internet of things devices 111_1 to 111_n and 112_1 to 112_m need to report the internet of things data to the internet of things service server 140 or receive the control command from the internet of things service server 140. In an embodiment, the internet of things devices 111_1-111_n and 112_1-112_m can be connected to the access node 120 through the network hub devices 131 and 132, respectively, to report internet of things data to the internet of things service server 140 or receive control commands from the internet of things service server 140 through the core network 101. That is, in one embodiment, the network hub devices 131 and 132 can be regarded as the Iot hub (Iot hub) configured for the internet of things devices 111_1 to 111_n and 112_1 to 112_m. Through the bridging of the network hub device 131, the plurality of internet of things devices 111_1 to 111_n can simultaneously enjoy the communication services provided by the telecommunication network operators or the internet network providers.

In one embodiment, the network hub devices 131 and 132 can be used to manage the Internet of things devices 111_1 to 111_N and 112_1 to 112_M. In other words, the network hub devices 131 and 132 can respectively arrange different frequency channels and/or different data reporting periods for the internet of things devices 111_1 to 111_n and 112_1 to 112_m, so as to avoid collision of the internet of things devices 111_1 to 111_n and 112_1 to 112_m when reporting, thereby reducing the probability of data loss. The communication resources of the internet of things devices 111_1 to 111_n and 112_1 to 112_m are scheduled through the network hub devices 131 and 132, so that the burden of the access node 120 and the Backhaul (Backhaul) can be effectively reduced, and the congestion caused by the networking of a large number of the internet of things devices 111_1 to 111_n and 112_1 to 112_m can be alleviated, and the probability of data collision can be reduced, so that a reliable network environment is constructed for the internet of things system 10.

It should be noted that, in one embodiment, in response to an abnormal connection between the network hub device 131 and the access node 120, the first network hub device 131 may establish a connection with the network hub device 132 through a standby frequency communication BF 1. Thus, when the internet of things devices 111_1 to 111_n cannot report the internet of things data through the connection between the network hub device 131 and the access node 120, the internet of things devices 111_1 to 111_n can report the internet of things data to the internet of things service server 140 through the standby frequency channel BF1 between the network hub device 131 and the network hub device 132. For example, the standby frequency channel BF1 between the hub device 131 and the hub device 132 may be one frequency channel in the Lora protocol.

Fig. 2A and fig. 2B are schematic application diagrams of an internet of things system according to an embodiment of the invention. Referring to fig. 2A, fig. 2A illustrates an implementation of an access node 120 including a radio base station 120 (1) and an internet modem 120 (2). The internet of things devices 111_1-111_n can be connected to the network hub device 131, and the network hub device 131 can be connected to the radio base station 120 (1). Specifically, the network hub 131 will be located within the wireless signal coverage of the radio base station 120 (1) to establish a wireless connection with the radio base station 120 (1). The radio base station 120 (1) is connected to the core network 101 via a Backhaul (Backhaul) 150 of a telecommunications network operator. For example, the radio base station 120 (1) may be connected to a Serving Gateway (SGW) or mobility management entity (Mobility Management Entity, MME) in the core network 101 via a backhaul 150. Accordingly, the internet of things devices 111_1 to 111_n can communicate with the internet of things service server 140 via the network hub device 131, the radio base station 120 (1), the backhaul 150 and the core network 101. It should be noted that, for convenience of clarity, fig. 2A only illustrates an example in which one network hub device 131 is connected to the radio base station 120 (1), but the present invention is not limited thereto. In one embodiment, the radio base station 120 (1) may be connected to a plurality of network hub devices, and each of the network hub devices is connected to a corresponding group of internet of things devices.

On the other hand, the devices 112_1 to 112_m of the internet of things can be connected to the hub device 132, and the hub device 132 can be connected to the modem 120 (2). Specifically, the network hub 132 may be connected to the modem 120 (2) via a transmission cable to establish a wired communication link. The modem 120 (2) may be connected to network equipment, such as a digital subscriber loop access multiplexer (Digital Subscriber Line Access Multiplexer, DSLAM) or a fiber line terminator (Optical Line Terminal, OLT), etc., that is an access port for the ISP network 102. Network devices that are access points to ISP network 102 may connect to network routing nodes in ISP network 102 via a backhaul, allowing modem 120 (2) to connect to core network 101 via ISP network 102. Accordingly, the internet of things devices 112_1 to 112_m can communicate with the internet of things service server 140 via the network hub device 132, the modem 120 (2) and the core network 101. It should be noted that, for convenience and clarity, fig. 2A only illustrates an example in which one network hub 132 is connected to the modem 120 (2), but the present invention is not limited thereto. In one embodiment, the modem 120 (2) may be connected to a plurality of network hub devices, and each of the network hub devices is connected to a corresponding group of internet of things devices.

Referring to fig. 2B, fig. 2B illustrates an implementation of an access node 120 including a radio base station 120 (1) and a radio base station 120 (3). In contrast to fig. 2A, the network hub 132 may be connected to the radio base station 120 (3). Specifically, the network hub 132 will be located within the wireless signal coverage of the radio base station 120 (3) to establish a wireless connection with the radio base station 120 (3). Accordingly, the IOT devices 112_1-112_M can communicate with the IOT service server 140 via the hub device 132, the radio base station 120 (3), the backhaul 150 and the core network 101.

It should be noted that the functions and hardware configurations of the network hub devices 131 and 132 are substantially the same, so the network hub device 131 is taken as an example for the following description, and those skilled in the art should be able to derive the functions and hardware configurations of the network hub device 132 based on the related teachings. Fig. 3 is a block diagram of a network hub according to an embodiment of the invention. Referring to fig. 3, the network hub 131 includes a communication circuit 31, a storage device 32, and a processor 33.

The network hub 131 may support one or more wired/wireless communication standards and the communication circuit 31 may include elements supporting one or more wired/wireless communication standards. For example, the communication circuit 31 may be an electronic component supporting RS485 standard, long term evolution (long term evolution, LTE) standard, 5G standard, wi-Fi standard, lora standard, or bluetooth standard, which the present invention is not limited to. That is, the communication circuit 31 may include a wireless transceiver, an antenna, or a wired signal transmission port, or the like. The communication circuit 31 can establish a communication link with the internet of things devices 111_1-111_n and the access node 120 according to one or more wired/wireless communication standards.

The storage device 32 is configured to store data, device configuration, program code, software elements, etc. as cache data or persistent data, which may be, for example, any type of fixed or removable random access memory (random access memory, RAM), read-only memory (ROM), flash memory (flash memory) or other similar device, integrated circuit, or a combination thereof.

The processor 33 is coupled to the communication circuit 31 and the storage device 32, and may be a programmable general purpose or special purpose Microprocessor (Microprocessor), a digital signal processor (Digital Signal Processor, DSP), a programmable controller, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or other similar element or combination thereof. The processor 33 may execute program code stored in the storage device 32 and access data recorded by the storage device 32 to implement any of the functions executable by the network hub 131 in the present disclosure.

Referring to fig. 3, in an embodiment, taking the internet of things device 111_1 as an example, the internet of things device 111_1 can report the internet of things data d1 to the internet of things service server 140 through the network hub device 131, and the internet of things data d1 can include sensing data, measurement data or other data. For example, the internet of things data d1 may include electricity meter number, water meter number, brightness sensing value or water condition sensing data, etc. It should be noted that, in an embodiment, the network hub device 131 can dynamically schedule the communication resources allocated to the internet of things devices 111_1 to 111_n, and the internet of things devices 111_1 to 111_n can report the internet of things data d1 according to the communication policy rule determined by the network hub device 131 so as to avoid the phenomenon of network congestion and data collision. In an embodiment, the network hub device 131 can send the parameter configuration command d2 to the internet of things device 111_1 to dynamically adjust the communication parameters of the internet of things device 111_1, so that the internet of things device 111_1 returns the internet of things data d1 according to the communication policy rule determined by the network hub device 131. The communication parameters may include quality of service (Quality of Service, qoS) parameters, frequency channels, data reporting periods, or combinations thereof. The interaction between the hub device 131 and the rest of the networking devices 111_2-111_N is similar to the above description, and will not be repeated here. Similarly, the interaction between the network hub device 132 and the internet of things devices 112_2-112_m is similar to that described above, and will not be repeated here.

Fig. 4 is a flowchart of a communication method of an internet of things system according to an embodiment of the present invention. Referring to fig. 4, the method of the present embodiment is applicable to the internet of things system 10 in the above embodiment, and the detailed steps of the present embodiment are described below with respect to each element in the internet of things system 10.

In step S401, the connection between the internet of things devices 111_1 to 111_n and the network hub device 131 is established, and the connection between the network hub device 131 and the access node 120 is established. The connection establishment method between the devices 111_1 to 111_n, the network hub device 131 and the access node 120 is described in the foregoing embodiments, and is not repeated here.

In step S402, the connection between the internet of things devices 112_1 to 112_m and the network hub device 132 is established, and the connection between the network hub device 132 and the access node 120 is established. The connection establishment method between the devices 112_1 to 112_m, the network hub device 132 and the access node 120 is described in the foregoing embodiments, and is not repeated here.

In step S403, in response to the occurrence of an abnormal connection between the network hub device 131 and the access node 120, a connection is established between the network hub device 131 and the network hub device 132 via a standby frequency channel BF 1. Factors such as failure of the access node 120, failure of the network hub 131, obstacle shielding or poor climate conditions may cause a break or abnormality in the connection between the network hub 131 and the access node 120. The network hub device 131 can automatically detect whether the connection between the network hub device and the access node 120 is normal.

In one embodiment, the hub devices 131, 132 may set one or more backup frequency channels among the plurality of available channels. For example, in the Lora standard, the bandwidth of an available channel is, for example, 125kHZ or 250kHZ, etc. The network hub devices 131 and 132 do not allocate the standby frequency channels to the internet of things devices 111_1 to 111_n and 112_1 to 112_m to report the internet of things data. The standby frequency channel can be used for receiving and transmitting signals and information from other network hub devices. When the connection between the network hub device 131 and the access node 120 is abnormal, the network hub device 131 cannot report the internet of things data to the internet of things service server 140 through the access node 120. Therefore, when the network hub device 131 detects that the connection between the network hub device 131 and the access node 120 is abnormal, the network hub device 131 may send a connection request to the network hub device 132 through the standby frequency channel BF 1. The network hub 132 may hear whether the backup frequency channel BF1 has connection requests from other network hubs. In response to receiving the connection request via the backup frequency channel BF1, the network hub device 132 may establish a connection with the network hub device 131 via the backup frequency channel BF 1.

Next, in step S404, the internet of things devices 111_1 to 111_n report the internet of things data of the internet of things devices 111_1 to 111_n to the internet of things service server 140 via the standby frequency channel BF1 between the network hub device 131 and the network hub device 132. In detail, the internet of things devices 111_1 to 111_n can transmit internet of things data to the network hub device 131, and the network hub device 131 transfers the internet of things data of the internet of things devices 111_1 to 111_n to the network hub device 132 via the standby frequency channel BF 1. Then, the network hub device 132 transmits the internet of things data of the internet of things devices 111_1 to 111_n to the internet of things service server 140 via the access node 120, so that the internet of things service server 140 can obtain the internet of things data of the internet of things devices 111_1 to 111_n. Therefore, when the connection between the network hub device 131 and the access node 120 is interrupted or abnormal, the internet of things data of the internet of things devices 111_1 to 111_n can be reported to the internet of things service server 140 through the standby frequency channel BF1, so that the reliability and success rate of reporting the internet of things data are greatly improved.

It should be noted that, when an abnormality occurs in the connection between the network hub device 131 and the access node 120, the service server 140 of the internet of things cannot send control information to the devices 111_1 to 111_n of the internet of things through the connection between the network hub device 131 and the access node 120. In an embodiment, after the network hub device 131 establishes a connection with the network hub device 132 through the standby frequency channel BF1, the internet of things service server 140 may send control information to the internet of things devices 111_1 to 111_n through the standby frequency channel BF1 between the network hub device 131 and the network hub device 132. In other words, since the network hub device 131 can be connected to the network hub device 132 through the standby frequency channel BF1, the service server 140 of the internet of things can transmit the control information to the network hub device 132, and then the network hub device 132 transfers the control information to the internet of things devices 111_1 to 111_n through the standby frequency channel BF 1.

In one embodiment, in response to the network hub device 131 establishing a connection with the network hub device 132 through the standby frequency channel BF1, the network hub device 132 sends notification information to the internet of things service server 140 through the access node 120 to notify the internet of things service server 140 to adjust the contact mode of the internet of things devices 111_1-111_n. In an embodiment, the service server 140 can adjust the packet destination of the control information sent to the devices 111_1 to 111_n from the network address of the network hub device 131 to the network address of the network hub device 132, so as to avoid that the control information cannot be transmitted to the devices 111_1 to 111_n.

In an embodiment, the control information sent by the service server 140 of the internet of things is, for example, parameter update information. When the internet of things devices 111_1 to 111_n have a software/firmware update or other parameter update requirement, the internet of things service server 140 can send a parameter update message to the network hub device 132. The network hub device 132 can transfer the parameter update information to the network hub device 131 through the standby frequency channel BF1, and the network hub device 131 assigns the parameter update information to the internet of things devices 111_1 to 111_n, so as to drive the internet of things devices 111_1 to 111_n to perform the setting update operation according to the parameter update information. That is, the internet of things service server 140 does not need to send N parameter update information to drive the internet of things devices 111_1 to 111_n one by one for performing the setting update operation, but sends one parameter update information to the network hub device 132 to drive all the internet of things devices 111_1 to 111_n for performing the setting update operation. Thus, the burden of the access node 120 and the Backhaul (Backhaul) can be greatly reduced.

In one embodiment, the network hub 132 may select the network hub 132 from a plurality of neighboring network hubs according to their location information or load status. Specifically, in addition to network hub devices 131, 132, the internet of things system 10 may include other network hub devices. According to the wireless signal coverage of the network hub device 131, besides the network hub device 132, the network hub device 131 also has the capability of establishing a connection with other network hub devices via the standby frequency channel. However, in consideration of connection quality and balancing the load of each network hub, the network hub 132 may select the network hub 132 from a plurality of neighboring network hubs according to their location information or load status. For example, the network hub 132 may select the closest network hub 132 from the neighboring network hubs to establish the backup tunnel connection. Alternatively, the network hub 132 may pick out the network hub 132 with the least amount of load from the neighboring network hubs to establish the backup tunnel connection. The load may include packet transmission load or the number of connections of the internet of things device.

In one embodiment, in response to the network hub device 131 establishing a connection with the network hub device 132 via the standby frequency channel BF1, the network hub device 132 may adjust the data reporting period and/or the frequency channel configured for the internet of things devices 111_1 to 111_n and/or the internet of things devices 112_1 to 112_m. The data reporting period is, for example, in units of time slots (time slots), and different data reporting periods correspond to different time slots. Therefore, the data loss caused by the mass transfer of the internet of things data of the internet of things devices 111_1 to 111_n and the internet of things data of the internet of things devices 112_1 to 112_m to the network hub device 132 can be avoided.

For example, fig. 5A and 5B are schematic diagrams illustrating adjusting a data reporting period of an internet of things device according to an embodiment of the invention. It should be noted that, the following description will take the network hub device 131 for managing and connecting to the internet of things devices 111_1 to 111_3 and the network hub device 132 for managing and connecting to the internet of things devices 112_1 to 112_3 as examples.

Referring to fig. 5A, taking the internet of things device 111_1 and the internet of things device 112_1 as an example, after the network hub device 131 is connected to the network hub device 132 via the standby frequency channel BF1, the network hub device 132 assigns the first frequency channel F1 and the first data reporting period T1 to the internet of things device 111_1 and assigns the second frequency channel F2 and the second data reporting period T4 to the internet of things device 112_1, so as to control the internet of things device 111_1 to report the internet of things data using the first frequency channel F1 in the first data reporting period T1 and control the internet of things device 112_1 to report the internet of things data using the second frequency channel F2 in the second data reporting period T4. In an embodiment, the first data reporting period T1 of the internet of things device 111_1 is different from the second data reporting period T4 of the internet of things device 112_1. Similarly, the network hub device 132 assigns the first frequency channel F1 and the first data reporting periods T2 and T3 to the internet of things devices 111_2 to 111_3, and assigns the second frequency channel F2 and the second data reporting periods T5 and T6 to the internet of things devices 112_2 to 112_3, respectively. The first data reporting periods T1, T2, T3 of the internet of things devices 111_1-111_3 are different from the second data reporting periods T4, T5, T6 of the internet of things devices 112_1-112_3. As shown in fig. 5A, the time for reporting the internet of things data by the internet of things devices 111_1 to 111_3 is staggered from the time for reporting the internet of things data by the internet of things devices 112_1 to 112_3, so that the problems of network congestion or data loss can be avoided.

In one embodiment, the network hub device 131 establishes a connection with the network hub device 132 through the standby frequency channel BF1, and the internet of things devices 111_1 to 111_3 are also included in the jurisdiction group of the network hub device 132 because the internet of things data of the internet of things devices 111_1 to 111_3 needs to be transmitted to the access node 120 through the network hub device 132. The network hub device 132 can dynamically adjust the first frequency channel and the first data reporting period of the internet of things devices 111_1 to 111_3 and the second frequency channel and the second data reporting period of the internet of things devices 112_1 to 112_3 according to the data reporting states 111_1 to 111_3 and the data reporting states of the internet of things devices 112_1 to 112_3. In detail, in one embodiment, the network hub device 132 can monitor the data reporting status of the internet of things devices 111_1 to 111_3, 112_1 to 112_3 to dynamically allocate communication resources to the internet of things devices 111_1 to 111_3, 112_1 to 112_3. The data reporting status is, for example, the data transmission frequency, etc. As before, the network hub 132 can dynamically adjust the QoS parameters, frequency channels, data reporting time or other parameters of the devices 111_1 to 111_3, 112_1 to 112_3. In one embodiment, the QoS parameters include the transmission priority order of the devices 111_1 to 111_3 and 112_1 to 112_3, i.e. the network hub 132 can dynamically adjust the transmission priority order of the devices 111_1 to 111_3 and 112_1 to 112_3. Alternatively, in one embodiment, the network hub device 132 can control the devices 111_1 to 111_3 and 112_1 to 112_3 to report the data packets using different frequency channels or at different communication times, respectively.

Referring to fig. 5B, before the network hub device 131 is connected to the network hub device 132 via the standby frequency channel BF1, the network hub devices 131 and 132 respectively manage the internet of things devices 111_1 to 111_3 and the internet of things devices 112_1 to 112_3. The network hub device 131 assigns the fourth frequency channel F1 and the fourth data reporting periods T1, T2, T3 to the internet of things devices 111_1 to 111_3, respectively, so as to control the internet of things devices 111_1 to 111_3 to report the internet of things data using the fourth frequency channel F2 in the fourth data reporting periods T1, T2, T3. The network hub device 132 assigns the third frequency channel F2 and the third data reporting periods T1, T2, T3 to the internet of things devices 112_1 to 112_3, respectively, so as to control the internet of things devices 112_1 to 112_3 to report the internet of things data using the third frequency channel F2 in the third data reporting periods T1, T2, T3. As can be seen from comparing fig. 5A and fig. 5B, in response to the network hub device 131 establishing a connection with the network hub device 132 via the standby frequency channel BF1, the network hub device 132 adjusts the data reporting time of the internet of things devices 112_1 to 112_3, i.e. the second data reporting time periods T4, T5, T6 of the internet of things devices 112_1 to 112_3 are different from the third data reporting time periods T1, T2, T3 of the internet of things devices 112_1 to 112_3.

However, the examples of fig. 5A and 5B are merely exemplary illustrations, and in other embodiments, in response to the network hub device 131 establishing a connection with the network hub device 132 through the standby frequency channel BF1, the network hub device 132 may also adjust the data reporting period of the internet of things devices 111_1 to 111_n to stagger the time for reporting the internet of things data by the internet of things devices 111_1 to 111_3 and the time for reporting the internet of things data by the internet of things devices 112_1 to 112_3. In addition, in response to the network hub device 131 establishing a connection with the network hub device 132 via the standby frequency channel BF1, the internet of things devices 111_1-111_3 and 112_1-112_3 are configured to use different data reporting periods, so that the internet of things devices 111_1-111_3 and 112_1-112_3 can report the internet of things data using the same frequency channel, and the problem of signal interference is avoided.

FIG. 6 is a schematic diagram illustrating a method of using a backup channel according to an embodiment of the invention. Referring to fig. 6, the internet of things system 10 may further include a network hub device 133 connected to the access node 120. The network hub devices 131 to 133 are respectively connected to the internet of things devices 111_1 to 111_3, 112_1 to 112_3, and 113_1 to 113_3. In one embodiment, after the network hub device 131 establishes a connection with the network hub device 132 through the standby frequency channel BF1, the network hub device 132 may establish a connection with the network hub device 133 through another standby frequency channel BF2 in response to an abnormal connection between the network hub device 132 and the access node 120. The implementation details of the network hub 132 to establish a connection with the network hub 133 via the other standby frequency channel BF2 are similar to the implementation details of the network hub 131 to establish a connection with the network hub 132 via the standby frequency channel BF 1. And will not be described in detail herein. The network hub 132 transfers the internet of things data from the internet of things devices 111_1 to 111_3 and 112_1 to 112_3 to the network hub 133 via the standby frequency channel BF 2. In this way, the data of the internet of things reported by the internet of things devices 111_1 to 111_3 and 112_1 to 112_3 are transmitted to the internet of things service server 140 through the connection between the network hub device 133 and the access node 120. Specifically, the internet of things devices 111_1 to 111_3 report the internet of things data to the internet of things service server 140 via the standby frequency channel BF1 and the other standby frequency channel BF2, that is, the internet of things data of the internet of things devices 111_1 to 111_3 is transmitted to the internet of things service server 140 via the data transmission path P1.

It should be noted that, in response to the network hub device 131 being connected to the network hub device 132 via the standby frequency channel BF1 and the network hub device 132 being connected to the network hub device 133 via the standby frequency channel BF2, the network hub device 133 may adjust the data reporting period and/or the frequency channel allocated to the internet of things devices 111_1 to 111_3, the internet of things devices 112_1 to 112_3 and/or the internet of things devices 113_1 to 112_3. Therefore, the data loss caused by the simultaneous transmission of too much Internet of things data to the network hub device 133 can be avoided.

FIG. 7 is a schematic diagram of a standby channel usage method according to an embodiment of the invention. Referring to fig. 7, the internet of things system 10 may further include a network hub device 133 connected to the access node 120. The network hub devices 131 to 133 are respectively connected to the internet of things devices 111_1 to 111_3, 112_1 to 112_3, and 113_1 to 113_3. In one embodiment, after the network hub device 131 establishes a connection with the network hub device 132 through the standby frequency channel BF1, the network hub device 131 switches from being connected to the network hub device 132 to being connected to the network hub device 133 through the standby frequency channel BF1 in response to the load of the network hub device 132 being higher than the threshold. The load capacity of the network hub 132 may include the number of connections of the devices 112_1 to 112_3 connected to the network hub 132, the packet transmission amount of the network hub 132 per unit time or the number of packets buffered in the network hub 132, etc.

In an embodiment, in the first period, the load of the network hub device 132 is smaller than the load of the network hub device 133, so that the network hub device 131 establishes a connection with the network hub device 132 through the standby frequency channel BF 1. Then, in a second period after the first period, the load of the network hub device 132 is changed to be greater than the load of the network hub device 133, so that the network hub device 131 can switch from being connected to the network hub device 132 to being connected to the network hub device 133 via the standby frequency channel BF 1. As shown in fig. 7, after the network hub device 131 is switched from being connected to the network hub device 132 to being connected to the network hub device 133 via the standby frequency channel BF1, the data transmission path P2 of the internet of things data reported by the internet of things device 111_1 is changed to the data transmission path P3.

In summary, in the embodiment of the present invention, the network hub device is deployed between the internet of things device and the access node, so that the burden of the existing base station and backhaul can be greatly reduced. When the connection between a certain network hub device and an access node is abnormal, the network hub device can be connected to another network hub device through the standby frequency channel, so that the Internet of things device managed by the network hub device can correctly report Internet of things data through the standby frequency channel. In addition, when the two network line concentration devices are connected through the standby forest rate channel, the network line concentration device which is normally connected with the access node can dynamically adjust the frequency channel and the data reporting time used by the Internet of things device, thereby reducing the congestion phenomenon caused by the networking of a large number of Internet of things devices and reducing the probability of data collision, and further building a reliable network environment for the Internet of things system. Therefore, the network hub device of the embodiment of the invention can be applied to different Internet of things services and application scenes, so that the Internet of things services can be more stable, more elastic and longer developed.

Although the invention has been described with reference to the above embodiments, it should be understood that the invention is not limited thereto, but rather may be modified or altered somewhat by persons skilled in the art without departing from the spirit and scope of the invention, which is accordingly defined in the appended claims.

Claims

1. An internet of things system, comprising:

the first network line concentration device is connected to at least one first Internet of things device;

the second network hub device is connected to at least one second internet device;

at least one access node connected to the first network hub device and the second network hub device;

the service server of the Internet of things is connected with the first network line concentration device and the second network line concentration device through the at least one access node,

in response to an abnormality in the connection between the first network hub device and the at least one access node, the first network hub device establishes a connection with the second network hub device via a standby frequency channel, and the first internet of things device reports internet of things data to the internet of things service server via the standby frequency channel between the first network hub device and the second network hub device,

After the first network hub device is connected to the second network hub device through the standby frequency channel, the second network hub device assigns a first frequency channel and a first data reporting period to the first internet of things device and assigns a second frequency channel and a second data reporting period to the second internet of things device, so as to control the first internet of things device to report internet of things data using the first frequency channel in the first data reporting period and control the second internet of things device to report internet of things data using the second frequency channel in the second data reporting period.

2. The internet of things system of claim 1, wherein the internet of things service server sends control information to the first internet of things device via the backup frequency channel between the first and second network hub devices after the first network hub device establishes a connection with the second network hub device via the backup frequency channel.

3. The internet of things system of claim 1, wherein the first network hub selects the second network hub from a plurality of adjacent network hubs according to their location information or load status.

4. The internet of things system of claim 1, wherein the first data reporting period of the first internet of things device is different from the second data reporting period of the second internet of things device.

5. The internet of things system of claim 1, wherein the second network hub device assigns a third frequency channel and a third data reporting period to the second internet of things device before the first network hub device is connected to the second network hub device via the backup frequency channel to control the second internet of things device to report internet of things data using the third frequency channel during the third data reporting period.

6. The internet of things system of claim 5, wherein the second data reporting period of the second internet of things device is different from the third data reporting period of the second internet of device.

7. The system of claim 1, wherein the second hub device dynamically adjusts the first frequency channel and the first data reporting period of the first internet of things device and the second frequency channel and the second data reporting period of the second internet of things device according to the data reporting status of the first internet of things device and the data reporting status of the second internet of things device.

8. The system of claim 1, further comprising a third network hub device connected to the at least one access node, wherein in response to an abnormal connection between the second network hub device and the at least one access node, the second network hub device establishes a connection with the third network hub device via another standby frequency channel, and the first internet of things device reports internet of things data to the internet of things service server via the standby frequency channel and the another standby frequency channel.

9. The system of claim 1, further comprising a third network hub connected to the at least one access node, the first network hub being switched from being connected to the second network hub to being connected to the third network hub via the standby frequency channel in response to a load level of the second network hub being above a threshold.

10. A backup tunnel usage method, applicable to an internet of things system, the method comprising:

establishing a connection between at least one first Internet of things device and a first network hub device, and establishing a connection between the first network hub device and at least one access node;

Establishing a connection between at least one second internet device and a second network hub device, and establishing a connection between the second network hub device and the at least one access node;

responding to the abnormal connection between the first network hub device and the at least one access node, and establishing connection with the second network hub device through the standby frequency channel by the first network hub device; and

reporting the internet of things data of the first internet of things device to an internet of things service server via the standby frequency channel between the first network hub device and the second network hub device,

the step of reporting the internet of things data of the first internet of things device to the internet of things service server via the standby frequency channel between the first network hub device and the second network hub device includes:

after the first network hub device is connected to the second network hub device through the standby frequency channel, assigning a first frequency channel and a first data reporting period to the first internet of things device and a second frequency channel and a second data reporting period to the second internet of things device through the second network hub device, so as to control the first internet of things device to report internet of things data using the first frequency channel in the first data reporting period and control the second internet of things device to report internet of things data using the second frequency channel in the second data reporting period.

11. The backup tunnel usage method of claim 10, further comprising:

after the first network hub device establishes connection with the second network hub device through the standby frequency channel, control information is sent to the first internet of things device through the standby frequency channel between the first network hub device and the second network hub device by the internet of things service server.

12. The backup tunnel usage method of claim 10, wherein before the step of establishing a connection with the second network hub via the backup frequency tunnel by the first network hub in response to an abnormality in the connection between the first network hub and the at least one access node, further comprising:

and selecting the second network hub device from the adjacent network hub devices according to the position information or the load states of the adjacent network hub devices by the first network hub device.

13. The backup tunnel usage method of claim 10, wherein the first data reporting period of the first internet of things device is different from the second data reporting period of the second internet of things device.

14. The backup tunnel usage method of claim 10, the method further comprising:

before the first network hub device is connected to the second network hub device through the standby frequency channel, a third frequency channel and a third data reporting period are assigned to the second network hub device through the second network hub device, so that the second network hub device is controlled to report the internet of things data by using the third frequency channel in the third data reporting period.

15. The backup tunnel usage method of claim 14, wherein the second data reporting period of the second networked device is different from the third data reporting period of the second networked device.

16. The backup tunnel usage method of claim 10, the method further comprising:

and dynamically adjusting the first frequency channel and the first data reporting period of the first internet of things device and the second frequency channel and the second data reporting period of the second internet of things device according to the data reporting state of the first internet of things device and the data reporting state of the second internet of things device by the second network hub device.

17. The standby channel usage method of claim 10, wherein after the step of reporting the internet of things data of the first internet of things device to the internet of things service server via the standby frequency channel between the first network hub device and the second network hub device, the method further comprises:

responding to the abnormal connection between the second network hub device and the at least one access node, and establishing connection with a third network hub device through the second network hub device and another standby frequency channel, wherein the third network hub device is connected to the Internet of things service server through the at least one access node; and

after the second network hub device establishes connection with the third network hub device through the other standby frequency channel, the internet of things data of the first internet of things device is reported to the internet of things service server through the standby frequency channel and the other standby frequency channel.

18. The standby channel usage method of claim 10, wherein after the step of reporting the internet of things data of the first internet of things device to the internet of things service server via the standby frequency channel between the first network hub device and the second network hub device, the method further comprises:

And in response to the load of the second network hub device being higher than a threshold, switching from being connected to the second network hub device through the first network hub device to being connected to a third network hub device through the standby frequency channel, wherein the third network hub device is connected to the internet of things service server through the at least one access node.