WO2018233463A1

WO2018233463A1 - Network communication method for network system

Info

Publication number: WO2018233463A1
Application number: PCT/CN2018/089045
Authority: WO
Inventors: 邵文俊; 王军; 程绍江; 禚百田; 张万英; 时斌
Original assignee: 青岛海尔空调电子有限公司
Priority date: 2017-06-23
Filing date: 2018-05-30
Publication date: 2018-12-27
Also published as: CN107396417B; CN107396417A

Abstract

The present invention relates to the technical field of wireless communications, and particularly provides a network communication method for a network system, aiming at solving the technical problem of the long communication time of a tree-shaped network. For this purpose, the method of the present invention comprises: a base station sending a data reporting instruction to each node device in the form of a broadcast; after receiving the data reporting instruction, a node device of a farthest-end channel layer sending reported data to a base station through a relay device link; and a node device of a non-farthest-end channel layer sending the reported data through the relay device link or directly to the base station after the reporting of data is completed by the node device of a next-level channel layer. The technical solution of the present invention can greatly reduce the communication time of a tree-shaped network.

Description

Network communication method for network system

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a network communication method for a network system.

Background technique

The tree network is formed by vertically connecting multiple levels of star structures, which can be widely used in hierarchical distributed communication systems. The communication control of the tree network is relatively simple, and provides a centralized point for control and error handling. The higher-ranking site in the tree network controls the data communication of the site located below it, and the data transmission of the peer site is realized by the transfer of the upper-level site.

However, the tree network mainly adopts a question-and-answer communication method, specifically: the root node sends instruction information to a node, and the node device feeds back response information to the root node according to the received instruction information, and the root node receives the feedback response. After the information, the instruction information is sent to another node. Adopting this communication method in a tree network with multiple levels and a large number of node devices will prolong the response time of node devices in the tree network, thereby delaying the overall communication time of the tree network and reducing the control efficiency of the root device to the node devices. .

Summary of the invention

In order to solve the above problems in the prior art, that is, to solve the technical problem that the tree network communication time is long, the present invention provides a network communication method for a network system.

The network system of the present invention comprises a base station and a plurality of channel layers, the farthest channel layer comprises a plurality of node devices, and the non-most remote channel layer comprises a plurality of node devices and a relay device, each of the node devices and at least one The terminal device is in communication connection, and the non-most remote channel layer relay device serially cascades to form a relay device chain, and each non-most remote channel layer relay device communicates with the node device of the next-level channel layer. Connecting, and the relay device and the node device of the most recent channel layer are directly in communication connection with the base station;

The network communication method in the present invention includes:

Sending, by the base station, a data reporting instruction to each node device in a broadcast manner;

After receiving the data reporting instruction, the node device of the far-end channel layer sends the reported data to the base station by using the relay device chain;

The node device of the non-most remote channel layer sends the reported data through the relay device chain or directly to the base station after the node device of the next-level channel layer completes the data reporting.

Further, a preferred technical solution provided by the present invention is:

The step of “the base station sends a data reporting instruction to each node device in a broadcast form” specifically includes:

The base station sends the data reporting instruction to the node device directly connected to the base station, and forwards the data reporting instruction to the node device communicatively connected to each level of the relay device by using the relay device chain.

Further, a preferred technical solution provided by the present invention is:

The step of the step that the node device of the most remote channel layer sends the reported data to the base station by using the relay device chain includes:

After receiving the data reporting instruction, each node device of the most remote channel layer sequentially sends the reported data to the base station through the relay device chain according to a preset reporting sequence.

Further, a preferred technical solution provided by the present invention is:

The steps of the node device that is not the most remote channel layer, after the node device of the next-stage channel layer completes the data reporting, and sends the reported data through the relay device chain or directly to the base station, includes:

After receiving the data reporting command at the non-most remote channel layer, and after a predetermined time, each node device of the non-most remote channel layer sequentially passes through the relay device chain or directly to the device according to a preset reporting sequence. The base station sends the reported data,

The predetermined time is the sum of the first time and the second time, and the first time is a sum of time for reporting data of the node devices of all the lower channel layers of the non-most remote channel layer, and the second time The command transmission time is reported for data between the relay device of the non-most remote channel layer and the relay device of the most remote channel layer.

Further, a preferred technical solution provided by the present invention is:

Before the base station sends a data reporting instruction to each node device in a broadcast form, the network communication method further includes:

According to the preset address segment, address configuration is performed on the node device of the most remote channel layer, the relay device of each non-most remote channel layer, and the node device.

Further, a preferred technical solution provided by the present invention is:

The preset reporting order is set according to the address of the node device of each channel layer.

Further, a preferred technical solution provided by the present invention is:

The network system further includes a host computer communicatively coupled to the base station;

The network communication method further includes:

The reporting data of all the node devices connected to the communication device is monitored by each of the relay devices, and the reported data is sent to the upper computer through the relay device chain and the base station.

Further, a preferred technical solution provided by the present invention is:

The upper computer uses a MODBUS bus to communicate with the base station; and/or the base station, the relay device, and the node device wirelessly transmit data at an air rate of 1.2 Kbps.

Further, a preferred technical solution provided by the present invention is:

The terminal device is a home appliance.

Further, a preferred technical solution provided by the present invention is:

The household electrical appliance is an air conditioner.

Compared with the prior art, the above technical solution has at least the following beneficial effects:

The network communication method of the present invention can send a data reporting instruction to each channel layer in a broadcast form by the base station, and after receiving the data reporting instruction, the node device at the far-end channel layer sends the reported data to the base station through the relay device chain, which is not the most After the node device of the next-level channel layer completes data reporting, the node device of the remote channel layer sends the reported data through the relay device chain or directly to the base station. Those skilled in the art can understand that the technical solution of the present invention can greatly reduce the tree network without increasing the channel bandwidth, because the serial data reporting mode of the layer-by-layer response is adopted, compared with the conventional data communication mode. The communication time of the system.

DRAWINGS

1 is a schematic structural diagram of a network system according to an embodiment of the present invention;

2 is a flow chart showing the main steps of a network communication method in an embodiment of the present invention.

Detailed ways

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of the present invention.

The root node in the tree network communicates with each child node separately. When the root node includes a large number of child nodes, the communication duration of the root node is inevitably increased, and the communication duration of the entire tree network is also increased. Based on this, the present invention provides a network communication method for a network system, which can control a root node in a tree network to broadcast communication information to each of its child nodes, and control each child node to sequentially feedback the layer by layer in a certain order. Information, which can save the communication time of the tree network.

A network communication method for a network system according to an embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In this embodiment, the network system may include a base station and multiple channel layers, the most remote channel layer includes multiple node devices, and the non-most remote channel layer includes multiple node devices and one relay device, and each node device and at least one The terminal device is in communication connection, and the plurality of non-most remote channel layer relay devices are serially cascaded to form a relay device chain, and each non-most remote channel layer relay device communicates with the node device of the next level channel layer. Connected, and the relay device and node device of the nearest-end channel layer are directly in communication with the base station. In a preferred embodiment of the embodiment, the node device can be communicatively coupled to 255 terminal devices.

Specifically, the most recent channel layer in this embodiment refers to a channel layer in which a relay device and a node device directly connected to the base station are located in the network system. The farthest channel layer refers to the channel layer in the network system that has the farthest communication distance with the above-mentioned nearest channel layer. The communication distance refers to the communication data transmission distance of the two channel layers, rather than the geographical location of the two channel layers. The distance of the area. The non-most distal channel layer refers to all channel layers in the network system except the most distal channel layer, that is, the non-most distal channel layer includes the nearest channel layer.

Referring next to Fig. 1, Fig. 1 exemplarily shows the structure of a network system in this embodiment. As shown in FIG. 1, the network system in this embodiment includes m+1 channel layers. The channel layer 0 to the channel layer m-1 each include multiple node devices and one relay device, and the channel layer m includes multiple node devices but does not include a relay device. In this embodiment, the m relay devices of the channel layer 0 to the channel layer m-1 are sequentially connected in the order of corresponding channel layer numbers from small to large to form a relay device chain. The head end relay device of the relay device chain, that is, the relay device corresponding to channel layer 0, is directly in communication connection with the base station. Specifically, in the embodiment, the channel layer where the relay device and the node device directly connected to the base station are located is the channel layer 0, and the channel layer with the communication distance farthest from the channel layer 0 is the channel layer m, so FIG. 1 In the network system shown, the most recent channel layer is channel layer 0, and the farthest channel layer channel layer m.

The base station may represent a root node in a tree network that may be in communication with a plurality of node devices or may be in communication with a relay device. Therefore, in this embodiment, the base station may directly send the command information to the node device directly connected to the base station, or may forward the command information to the other node device via the relay device, and the node device sends the command information to the terminal device.

In the present application, a terminal device refers to a device that performs a corresponding action in accordance with received command information. A relay device refers to a device that forwards data. Further, the relay device can also amplify the data and then forward it to other devices. For example, when the node device is far away from the base station, the relay device can extend the communication distance between the node device and the base station. At the same time, the network system may include multiple relay devices to meet the communication requirements of the node devices in different locations. The relay device may transmit the command information sent by the base station to each node device, or may feed each node device to the base station. The response information is transmitted to the upper level relay device or the base station.

In this embodiment, the terminal device may be a home appliance, and the home appliance may perform a corresponding action according to the received instruction information. For example, the terminal device may be an air conditioner, and the command information may be the reported temperature information, and the air conditioner may send the temperature information to the base station after receiving the command information.

In this embodiment, the upper computer can communicate with the base station to perform overall monitoring and coordination of the network system, for example, monitoring the reported data of each node device received by the base station. The upper computer can communicate with the base station through wireless communication, or can communicate with the base station by wired communication. The communication protocol between the upper computer and the base station can use any communication such as MODBUS communication protocol, HTTP communication protocol or TCP communication protocol. protocol. In a preferred technical solution of the embodiment, the upper computer uses a MODBUS bus to communicate with the base station.

In this embodiment, the airspeed of the base station, the relay device, and the node device are the same, and the airspeed may be an airspeed within a preset airspeed range, for example, the preset airspeed may be 0.6 to 2.4 Kbps. In a preferred technical solution of the embodiment, the airspeed of the base station, the relay device, and the node device may be 1.2 Kbps.

Referring next to Fig. 2, Fig. 2 exemplarily shows the main steps of the network communication method in this embodiment. As shown in FIG. 2, in this embodiment, network communication can be performed on the network system shown in FIG. 1 according to the following steps. Specifically, the method in FIG. 2 includes:

Step S101: The base station sends a data report instruction to each node device in a broadcast form.

Specifically, the base station may send a data reporting instruction to the node device directly connected to and communicate with the node device, and forward the data reporting instruction to the node device communicatively connected to each level of the relay device through the relay device chain. As shown in FIG. 1, the base station sends a data reporting instruction to each node device and relay device in channel layer 0. The relay device in the channel layer 0 sends the received data reporting instruction to each node device and the relay device in the channel layer 1. The relay device of the channel layer 1 transmits the received data reporting instruction to each node device and the relay device in the channel layer 2. Each channel layer transmits the data reporting command sent by the base station according to the foregoing data forwarding manner, which is not described here.

Step S102: After receiving the data reporting instruction, the node device at the far-end channel layer sends the reported data to the base station through the relay device chain.

Specifically, each node device in the most remote channel layer in this embodiment may send the reported data to the base station through the relay device chain in sequence according to a preset reporting sequence after receiving the data reporting command.

Step S103: After the node device of the non-most remote channel layer completes data reporting, the node device sends the reported data to the base station through the relay device chain or directly.

Specifically, the non-most remote channel layer in this embodiment may send the reported data according to the following steps: after receiving the data reporting instruction at the non-most remote channel layer, and after a predetermined time, the node of the non-most remote channel layer The device sequentially sends the reported data through the relay device chain or directly to the base station according to the preset reporting sequence.

In this embodiment, the predetermined time is the sum of the first time and the second time, and the first time is the sum of the time for reporting the data of the node devices of all the lower channel layers of the non-most remote channel layer, and the second time is the non-most remote channel. Data reporting command transmission time between the relay device of the layer and the relay device of the most remote channel layer. As shown in FIG. 1 , when the node device of the channel layer 1 sends the reported data to the base station through the relay device of the channel layer 0, the first time refers to the sum of the time reported by all the node devices between the channel layer m and the channel layer 2 The second time refers to the data reporting command transmission time between the relay device of the channel layer 1 and the relay device of the channel layer m.

In the present embodiment, the upper channel layer of one channel layer refers to a channel layer in which the communication distance between the channel layer and the base station is small. Correspondingly, the next-stage channel layer of one channel layer refers to a channel layer in which the communication distance from the base station is large in the channel layer to which the one channel layer is communicatively connected. As shown in FIG. 1, the channel layer m-1 is respectively connected to the channel layer m-2 and the channel layer m, and the communication distance between the channel layer m-2 and the base station is smaller than the communication distance between the channel layer m and the base station, so the channel Layer m-2 is the upper channel layer of channel layer m-1, and channel layer m is the next channel layer of channel layer m-1.

It should be noted that, in this embodiment, the farthest channel layer is only connected to one channel layer, and the communication distance between the channel layer and the base station is smaller than the communication distance between the farthest channel layer and the base station, so the channel layer is the most The upper channel layer of the distal channel layer, that is, the most distal channel layer, has no next channel layer.

Further, in a preferred embodiment of the present embodiment, before the step S101 shown in FIG. 2, the method may further include: following the preset address segment, respectively, the node devices of the most remote channel layer, each The relay device and the node device of the non-most remote channel layer perform address configuration.

As an example, the address information of the relay device and the node device in this embodiment is as shown in Table 1 below:

Table 1

Specifically, the network system includes a base station, and the base station corresponds to one address information. For example, the address information of the base station may be 0, or 1000, or 2000 or 31000, and the like.

Each channel layer of the network system can include 998 node devices. When the channel layer 0 includes 998 node devices, the address information of each node device may be 1 to 998, respectively. When the channel layer 1 includes 998 node devices, the address information of each node device may be 1001 to 1998, respectively. When the channel layer 2 includes 998 node devices, the address information of each node device may be 2001 to 2998, respectively. When the channel layer 31 includes 998 node devices, the address information of each node device may be 31001 to 31998, respectively. In this embodiment, the channel layer 0 includes four node devices, so the address information of each node device may be 1 to 4, respectively.

Each channel layer of the network system may include one relay device. When the relay device is at channel layer 0, its address information is 999. When the relay device is at channel layer 1, its address information is 1999, and when the relay device is at channel layer 2, The address information is 2999. When the relay device is in the channel layer 31, its address information is 31999.

Further, in a preferred embodiment of the present embodiment, in steps S102 and S103 shown in FIG. 2, the reporting sequence of sending the reported data by the node device may be set according to the following steps: according to the node device of each channel layer The address configuration is reported in the order.

Specifically, as shown in FIG. 1 , the address information of the three node devices of the most remote channel layer m in the network system are m001, m002, and m003, respectively, and m001 <m002 < m003, and the reporting order of the three node devices is It can be determined according to the order of the addresses, for example, "m001, m002, m003". The address information of the four node devices of the non-most remote channel layer 0 in the network system is 1, 2, 3, and 4, respectively, and the reporting order of the four node devices may be determined according to the order of the addresses, for example, "1" , 2, 3, 4".

Regarding the address configuration, it should be noted that although the specific address configuration manner is described in detail herein, this is merely exemplary and does not constitute a limitation of the present invention, as long as the node devices of each channel layer can be arranged in a certain order. The data is reported sequentially in sequence, and the present invention can employ any suitable address configuration method.

Further, it can be seen from the foregoing that the network system shown in FIG. 1 further includes a host computer communicatively coupled to the base station. Accordingly, the network communication method for the network system shown in FIG. 1 may further include the following steps: The relay device monitors the reported data of all the node devices connected to the communication device, and sends the reported data to the upper computer through the relay device chain and the base station. That is, similar to the above-described data reporting or transmission mode of the present invention, the above operation mode is the monitoring mode of the network system shown in FIG. 1.

Further, in a preferred embodiment of the embodiment, the base station, the relay device, and the node device of the network system shown in FIG. 1 may be parameterized according to the following operation mode: at a base station, or a relay device, or a node. After the device is started, the base station, or the relay device, or parameters stored in the node device are modified, and the base station, or the relay device, or the node device is restarted after the modification is successful. Specifically, when the parameter modification instruction received by the base station, the relay device, and the node device is consistent with the parameters stored by the base station, the relay device, and the node device, the base station, the relay device, and the node device are directly restarted. When the parameter modification command received by the base station, the relay device, and the node device is inconsistent with the parameters stored by the base station, the relay device, and the node device, the base station, the relay device, and the node device need to be restarted after the parameters are modified. When the base station, the relay device, and the node device do not receive the parameter modification command, they directly enter the normal working state. At the same time, it can be known that the base station, the relay device, and the node device in the network system are configured with different address information, so that the base station can directly The address information determines the type of each device in the network system, that is, whether the device is a base station, a relay device, or a node device can be directly determined according to the address information. In a preferred embodiment of the present embodiment, the remainder obtained by dividing the address information by the preset value may be obtained, and the type of each device in the network system is determined according to the remainder, specifically: if the remainder is the preset first The value is the base station. If the remainder is the preset second value, it is a relay device, otherwise it is a node device. For example, the first value is 0 and the second value is 9.

The settable parameters of the network system in this embodiment mainly include air rate, address information, and the transmission frequency of the channel layer, the time interval of the base station broadcast data, the time interval for the relay device to send data, the time interval for the node device to send data, and the reading. Take the starting address of the data, the number of data read, and the longest waiting time of the base station. Meanwhile, the parameters of the network system shown in FIG. 1 may further include the number of the relay devices, the number of the node devices, the number of the terminal devices, and the like. The transmission frequency corresponding to the 31 channel layers shown in FIG. 1 may be 410 to 441 MHz, respectively. The time interval at which the base station broadcasts data may be set according to the number of relay devices and node devices, and the communication distance of the network system. When the number of relay devices and node devices is larger, the longer the communication distance of the network system is, the larger the time interval at which the base station broadcasts data. The time interval at which the relay device sends data and the time interval at which the node device sends data can be set by the actual data transmission distance and the corresponding device type. The starting address of the read data refers to the starting address of the data read by the node device. The number of read data refers to the number of data that the node device reads from the start address at a preset time. The longest waiting time of the base station refers to the time when the base station waits for the terminal device to feedback the reported data.

In this embodiment, the base station sends a data reporting instruction to each node device in a broadcast form. After receiving the data reporting instruction, the node device at the far-end channel layer sends the reported data to the base station through the relay device chain; After the node device of the channel layer finishes reporting the data, the node device sends the reported data to the base station through the relay device chain or directly. Due to the data reporting method of layer-by-layer aggregation, the technical solution of the present invention can greatly reduce the communication time of the tree network system without increasing the channel bandwidth compared to the conventional single-point inquiry data communication mode.

In the above embodiment, although the steps are described in the above-described order, those skilled in the art can understand that in order to implement the effects of the embodiment, different steps need not be performed in this order, which can be simultaneously ( Performed in parallel or in reverse order, these simple variations are within the scope of the invention.

It will be understood by those skilled in the art that although some embodiments described herein include certain features included in other embodiments and not other features, combinations of features of different embodiments are intended to be within the scope of the present invention. And different embodiments are formed. For example, in the claims of the present invention, any one of the claimed embodiments can be used in any combination.

It is to be noted that the above-described embodiments are illustrative of the invention and are not intended to be limiting, and that the invention may be devised without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as a limitation. The word "comprising" does not exclude the presence of the elements or steps that are not recited in the claims. The word "a" or "an" The invention can be implemented by means of hardware comprising several distinct elements and by means of a suitably programmed PC. In the unit claims enumerating several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

Heretofore, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings, but it is obvious to those skilled in the art that the scope of the present invention is obviously not limited to the specific embodiments. Those skilled in the art can make equivalent changes or substitutions to the related technical features without departing from the principles of the present invention, and the technical solutions after the modifications or replacements fall within the scope of the present invention.

Claims

A network communication method for a network system, the network system comprising a base station and a plurality of channel layers, the farthest channel layer comprising a plurality of node devices, and the non-most remote channel layer comprising a plurality of node devices and a relay device Each of the node devices is in communication with at least one terminal device, and the non-most remote channel layer relay devices are serially cascaded to form a relay device chain, and each non-most remote channel layer relay device Communicating with the node device of the next-level channel layer, and the relay device and the node device of the nearest-end channel layer are directly in communication connection with the base station;

The method for network communication includes:

Sending, by the base station, a data reporting instruction to each node device in a broadcast manner;

After receiving the data reporting instruction, the node device of the far-end channel layer sends the reported data to the base station by using the relay device chain;

The node device of the non-most remote channel layer sends the reported data through the relay device chain or directly to the base station after the node device of the next-level channel layer completes the data reporting.
The network communication method according to claim 1, wherein

The step of “the base station sends a data reporting instruction to each node device in a broadcast form” specifically includes:

The base station sends the data reporting instruction to the node device directly connected to the base station, and forwards the data reporting instruction to the node device communicatively connected to each level of the relay device by using the relay device chain.
The network communication method according to claim 1, wherein

The step of the step that the node device of the most remote channel layer sends the reported data to the base station by using the relay device chain includes:

After receiving the data reporting instruction, each node device of the most remote channel layer sequentially sends the reported data to the base station through the relay device chain according to a preset reporting sequence.
The network communication method according to claim 3, characterized in that

The steps of the node device that is not the most remote channel layer, after the node device of the next-stage channel layer completes the data reporting, and sends the reported data through the relay device chain or directly to the base station, includes:

After receiving the data reporting command at the non-most remote channel layer, and after a predetermined time, each node device of the non-most remote channel layer sequentially passes through the relay device chain or directly to the device according to a preset reporting sequence. The base station sends the reported data,

The predetermined time is the sum of the first time and the second time, and the first time is a sum of time for reporting data of the node devices of all the lower channel layers of the non-most remote channel layer, and the second time The command transmission time is reported for data between the relay device of the non-most remote channel layer and the relay device of the most remote channel layer.
The network communication method according to claim 4, characterized in that

Before the base station sends a data reporting instruction to each node device in a broadcast form, the network communication method further includes:

According to the preset address segment, address configuration is performed on the node device of the most remote channel layer, the relay device of each non-most remote channel layer, and the node device.
The network communication method according to claim 5, characterized in that

The preset reporting order is set according to the address of the node device of each channel layer.
The network communication method according to any one of claims 1 to 6, wherein the network system further comprises a host computer communicably connected to the base station;

The network communication method further includes:

The reporting data of all the node devices connected to the communication device is monitored by each of the relay devices, and the reported data is sent to the upper computer through the relay device chain and the base station.
The network communication method according to claim 7, wherein

The upper computer uses a MODBUS bus to communicate with the base station; and/or the base station, the relay device, and the node device wirelessly transmit data at an air rate of 1.2 Kbps.
The network communication method according to any one of claims 1 to 6, wherein the terminal device is a home appliance.
The network communication method according to claim 9, wherein

The household electrical appliance is an air conditioner.