CN215734855U - Wireless grid network system, network structure and control system based on bluetooth - Google Patents

Abstract

The network system comprises M relay nodes and N terminal nodes, wherein M is more than or equal to 2, and N is more than or equal to 2; any two relay nodes in the M relay nodes are in communication connection, and each terminal node in the N terminal nodes is connected with a corresponding relay node in the M relay nodes; the relay node is used for forwarding the received message to a terminal node or other relay nodes connected with the relay node in a unicast mode. By adopting the network topology structure provided by the embodiment of the application, the relay node is used for separating the subnets, the relay node is used as the only forwarding node in the subnets, other nodes do not perform forwarding support, the sending of messages can be reduced, redundant data transmission is reduced, and less bandwidth resources are occupied compared with a standard protocol.

Description

Wireless grid network system, network structure and control system based on bluetooth

Technical Field

The present application relates to the field of communications technologies, and in particular, to a wireless mesh network system, a network structure, and a control system.

Background

Bluetooth Low Energy (BLE) wireless Mesh network (Mesh) is a new network topology for many-to-many (any) device communication established based on BLE, which allows to create a large network based on multiple devices, where the network may contain tens, hundreds or even thousands of BLE devices, and the BLE devices may communicate information with each other.

The standard specification of BLE Mesh is based on the flooding Mesh protocol specification, that is, data transmitted by one BLE device may be more and more intensive and spread more and more as other BLE devices forward. A series of BLE devices are defined in the Mesh protocol specification, and how networking, interoperation, communication and management are performed among the BLE devices is described. The BLE is a low-power consumption device, and through polling operation of BLE broadcasting and scanning, mutual operation and communication of the BLE device can be easily realized, and at the moment, different characteristics are given to some specific nodes, so that each node in the Mesh network can be managed and controlled. Wherein, a node can be understood as a BLE device in a Mesh network.

Specifically, each node may be distributed with an address, a subnet may be allocated by integrating the addresses of a plurality of BLE devices into an address group, and messages sent by the nodes may be forwarded by relay (relay) nodes in the subnet and messages outside the subnet may be forwarded by all relay nodes.

That is, the message will be flooded and broadcast to its surrounding nodes whenever a relay node receives the message. The flooding method does not need a central node to coordinate, so that the optimal path is not selected to be propagated, and the message can arrive through a plurality of paths one after another. It will be appreciated that the message is actually transmitted once and successfully, which has too much redundancy to be transmitted, resulting in power consumption and network data congestion.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a wireless Mesh network system, a network structure and a control system based on bluetooth, so as to facilitate solving the problems of energy consumption and network data blocking caused by too many redundant data transmissions in a BLE Mesh network in the prior art.

In a first aspect, an embodiment of the present application provides a wireless mesh network system based on bluetooth, including: m relay nodes and N terminal nodes, wherein M is more than or equal to 2, and N is more than or equal to 2;

any two relay nodes in the M relay nodes are in communication connection, and each terminal node in the N terminal nodes is connected with a corresponding relay node in the M relay nodes;

the relay node is used for forwarding the received message to a terminal node or other relay nodes connected with the relay node in a unicast mode.

Preferably, the terminal nodes include a friend node and a low power consumption node, and the friend node is associated with the low power consumption node;

and the friend node is used for storing and/or answering the message related to the low-power consumption node.

Preferably, the buddy node is further configured to send a stored message related to the buddy node in response to a message query request sent by the low power consumption node.

Preferably, the buddy node is configured to store and/or respond to a message related to the low power consumption node, specifically:

and the friend node is used for storing and/or answering the message related to the low-power-consumption node when the low-power-consumption node is in a dormant state.

Preferably, the relay node is further configured to add and/or delete the terminal node.

In a second aspect, an embodiment of the present application provides a wireless mesh network structure based on bluetooth, including:

the application layer is used for determining whether the message of the source terminal node needs to be sent to the target terminal node;

the transmission layer is used for packaging the received message sent by the source terminal node and packetizing the message needing to be sent to the target terminal node;

a network layer, configured to configure a routing path between the source terminal node and the target terminal node, where the routing path includes one or more relay nodes, and a message of the source terminal node reaches the target terminal node through forwarding of the one or more relay nodes;

and the bearing layer is used for transmitting the message of the source terminal node to the target terminal node according to the routing path.

In a third aspect, an embodiment of the present application provides a control system for a wireless mesh network based on bluetooth, including: m relay nodes and N terminal nodes, wherein M is more than or equal to 2, and N is more than or equal to 2;

any two relay nodes in the M relay nodes are in communication connection, and each terminal node in the N terminal nodes is connected with a corresponding relay node in the M relay nodes;

the relay node is used for forwarding the received message to a terminal node or other relay nodes connected with the relay node in a unicast mode;

the N terminal nodes comprise one or more control nodes and one or more controlled nodes.

Preferably, the control node is an intelligent home controller, and the controlled node is an intelligent home device.

Preferably, the smart home devices are smart lamps.

By adopting the network topology structure provided by the embodiment of the application, the relay node is used for separating the subnets, the relay node is used as the only forwarding node in the subnets, other nodes do not perform forwarding support, the sending of messages can be reduced, redundant data transmission is reduced, and less bandwidth resources are occupied compared with a standard protocol.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a wireless mesh network system based on bluetooth according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another bluetooth-based wireless mesh network system according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of another bluetooth-based wireless mesh network system according to an embodiment of the present application;

fig. 4 is a wireless mesh network structure based on bluetooth according to an embodiment of the present application;

fig. 5 is a schematic view of a lamp control system according to an embodiment of the present disclosure.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., A and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Aiming at the problems that a BLE Mesh network in the prior art has too many redundant transmissions, which causes energy consumption and network data blocking, embodiments of the present application provide a wireless Mesh network system, a network structure and a control system based on bluetooth, which are described below with reference to the accompanying drawings.

Referring to fig. 1, a schematic structural diagram of a wireless mesh network system based on bluetooth according to an embodiment of the present application is provided. For ease of description, the bluetooth-based wireless Mesh network system will be referred to as BLE Mesh system hereinafter.

As shown in fig. 1, the BLE Mesh system includes 2 relay nodes and 3 terminal nodes, which are relay node a, relay node B, terminal node a, terminal node B, and terminal node C, respectively. The terminal node A and the terminal node B are connected with the relay node A, and the terminal node C is connected with the relay node B. In addition, the relay node a and the relay node B are connected to form a BLE Mesh system.

In the BLE Mesh system, a terminal node A, a terminal node B and a relay node A form a subnet; the terminal node C and the relay node B constitute a subnet. The relay node is used as the only forwarding node in the subnet, and the terminal node does not make forwarding support. That is, in one subnet, an end node can usually communicate only with a relay node, and two end nodes cannot usually communicate directly with each other. For example, when a terminal node a and a terminal node B in the same subnet need to communicate, the forwarding of the message by the relay node a is needed. That is, terminal node a sends a message to relay node a, which sends a message to terminal node B. That is, a total of 2 messages are sent.

In addition, for messages outside the sub-network, the relay nodes need to sequentially forward the messages to other relay nodes until the messages reach the sub-network corresponding to the target terminal node. For example, when terminal node a and terminal node C need to communicate, terminal node a sends a message to relay node a, relay node a forwards the message to relay node B, and relay node B forwards the message to terminal node C. That is, a total of 4 messages are sent.

In summary, in the present application example, the relay node serves as the only forwarding node in the subnet, and forwards the received message to the terminal node or other relay nodes connected to the relay node in a unicast manner, and the other nodes do not make forwarding support, so that message forwarding can be reduced as much as possible. Specifically, for the messages in the subnet, the relay nodes in the subnet directly forward the messages, and for the messages outside the subnet, the relay nodes in the subnet forward the messages to other relay nodes in sequence until the messages reach the subnet where the target device is located. Here, unicast refers to communication between one sender and one recipient via a network. This concept corresponds to multicast, which refers to communication between one sender and multiple recipients.

By adopting the network topology structure provided by the embodiment of the application, the relay node is used for separating the subnets, and the relay node is used as the only forwarding node in the subnets, so that the sending of messages can be reduced, the redundant data transmission is reduced, and less bandwidth resources are occupied compared with a standard protocol.

It should be noted that fig. 1 is only one possible implementation manner listed in the embodiments of the present application, and should not be taken as a limitation to the scope of the present application.

For example, the number of the relay nodes and the number of the terminal nodes are not specifically limited in the embodiment of the present application, specifically, the number of the relay nodes may be M, the number of the terminal nodes may be N, M ≧ 2, and N ≧ 2. And any two relay nodes in the M relay nodes are in communication connection, wherein the communication connection can be that the two relay nodes are directly connected for communication connection, or the two relay nodes are indirectly connected through other relay nodes, so that the two relay nodes are in communication connection.

Referring to fig. 2, a schematic structural diagram of another bluetooth-based wireless mesh network system according to an embodiment of the present application is provided. The BLE Mesh system is different from the BLE Mesh system shown in fig. 1 in that the BLE Mesh system further includes a relay node C and a terminal node D, and the terminal node D is connected with the relay node C to form a subnet of the BLE Mesh system. In the BLE Mesh system, a relay node A is connected with a relay node B to realize communication connection; the relay node A and the relay node C are connected through the relay node B to achieve communication connection.

In addition, in the BLE Mesh system, each of the N terminal nodes is connected to a corresponding one of the M relay nodes. And the relay node corresponding to the terminal node is the relay node in the same subnet as the terminal node. E.g., terminal node D and relay node C.

In practical application, a BLE Mesh system can be expanded by accessing enough relay nodes and connecting enough terminal nodes through the relay nodes. In one possible implementation, at most 8 terminal nodes can be connected to one relay node at the same time. In a possible implementation manner, after a certain device has a distribution network condition, the device may invite to access the network through the relay node. Specifically, when a certain device enters the network connection range of the relay node, the relay node actively sends a network access request to prompt a user to perform corresponding network configuration at the terminal node, so that the user experience is improved.

For example, in the embodiment shown in fig. 2, terminal node C is added through relay node B. Of course, except for adding the terminal node, the relay node may delete the terminal node in the BLE Mesh system, which is not limited in this embodiment of the present application.

In some possible implementation manners, the terminal nodes include a friend node and a low power consumption node which are associated with each other. The friend node may be a node in the terminal node that supports a friend function.

Referring to fig. 3, a schematic structural diagram of another bluetooth-based wireless mesh network system according to an embodiment of the present application is provided. The BLE Mesh system is different from the BLE Mesh system shown in fig. 1 in that the BLE Mesh system further includes a friend node and a low-power node, and the friend node and the low-power node are associated and located in the same subnet as the relay node a. The low-power-consumption node has longer dormancy time compared with other terminal nodes, and when the low-power-consumption node is in the dormancy state, the messages related to the low-power-consumption node can be stored and/or responded through the friend node. When the low-power-consumption node is in a working state, a message query request can be sent to the friend node, and after the friend node receives the message query request, the stored message is sent to the low-power-consumption node.

It should be noted that the buddy node and the low power node shown in fig. 3 are only an exemplary illustration of the embodiment of the present application, and should not be taken as a limitation of the scope of the present application. For example, a person skilled in the art may adjust the number of the friend nodes and the low power consumption nodes and the subnets where the friend nodes and the low power consumption nodes are located according to actual needs, which is not limited in the embodiment of the present application.

In the embodiment of the application, the friend node can temporarily store the message sent to the low-power-consumption node, and the related message is taken back from the friend node after the low-power-consumption node exits the sleep mode, so that the message receiving and sending of the low-power-consumption node are prevented from being influenced by the sleep.

Referring to fig. 4, a wireless mesh network structure based on bluetooth is provided for the embodiment of the present application. As shown in fig. 4, the Network structure is a 4-layer structure, and includes an Application layer (Application layer), a Transport layer (Transport layer), a Network layer (Network layer), and a Bearer layer (Bearer layer) from top to bottom.

The application layer is used for determining whether the message of the source terminal node needs to be sent to the target terminal node. The source terminal node is a terminal node which needs to send a message in the network, and the target terminal node is a terminal node which needs to receive the message in the network. That is, it is decided by the application layer whether a certain end node needs to send a message to other end nodes.

And the transmission layer is used for packaging the received message sent by the source terminal node and packetizing the message needing to be sent to the target terminal node.

And the network layer is used for configuring a routing path between the source terminal node and the target terminal node, the routing path comprises one or more relay nodes, and the message of the source terminal node reaches the target terminal node through the forwarding of the one or more relay nodes. Specifically, when the source terminal node and the target terminal node are located in the same subnet, the relay node in the subnet may directly forward the message, and forward the message sent by the source terminal node to the target terminal node; when the source terminal node and the target terminal node are located in different subnets, the messages may be forwarded between the different subnets through the relay node, for example, a first relay node in a first subnet forwards the messages to a second relay node in a second subnet. That is, when the source terminal node and the target terminal node are located in different subnets, the source terminal node may forward the message to the target terminal node through a plurality of relay nodes.

And the bearing layer is used for transmitting the message of the source terminal node to the target terminal node according to the routing path. Specifically, after the network layer completes the routing path configuration, the bearer layer is responsible for sending the specific message.

In the related art, a BLE Mesh Network is generally a 7-layer Network structure, and includes, from top to bottom, a model layer (Models), a base model layer (Foundation Models), an Access layer (Access layer), an Upper transport layer (Upper transport layer), a Lower transport layer (Lower transport layer), a Network layer (Network layer), and a Bearer layer (Bearer layer).

In the embodiment of the application, by setting the four-layer network structure, the data transmission and communication speed can be increased, the data processing is reduced, and the hardware requirement is reduced.

It can be understood that based on the BLE Mesh system provided in the embodiments of the present application, a corresponding control system may be configured. The control system can be applied to various fields, such as smart homes, smart factories and the like, and the embodiment of the application is not limited thereto.

Specifically, an embodiment of the present application provides a control system for a wireless mesh network based on bluetooth, including: m relay nodes and N terminal nodes, wherein M is more than or equal to 2, and N is more than or equal to 2; any two relay nodes in the M relay nodes are in communication connection, and each terminal node in the N terminal nodes is connected with a corresponding relay node in the M relay nodes; the relay node is used for forwarding the received message to a terminal node or other relay nodes connected with the relay node in a unicast mode; the N terminal nodes comprise one or more control nodes and one or more controlled nodes.

That is to say, in the embodiment of the present application, the terminal nodes are a control node and a controlled node, respectively, and the controlled node can be controlled by the control node to complete a corresponding trigger action.

For example, in the field of smart home, the control node may be a smart home controller, and the controlled node may be a smart lamp. Therefore, the intelligent household controller can send corresponding control instructions to the intelligent lamp to realize the on-off of the intelligent lamp.

Of course, besides the smart lamp, the controlled node may also be a smart television, a smart air conditioner, a smart refrigerator, or other smart home devices, which is not specifically limited in this embodiment of the application.

In addition, the number of the control nodes may be 1, 2 or more, and those skilled in the art may perform corresponding configuration according to actual needs, which is not specifically limited in the embodiment of the present application.

Referring to fig. 5, a schematic diagram of a lamp control system according to an embodiment of the present disclosure is shown. The lamp control system may be implemented based on the BLE Mesh system shown in fig. 1. The terminal node A is an intelligent lamp controller, the terminal node B is a first intelligent lamp, and the terminal node C is a second intelligent lamp.

When the intelligent lamp controller needs to control the first intelligent lamp switch and the like, the transmission path of the message is terminal node A → relay node A → terminal node B.

When the intelligent lamp controller needs to control the second intelligent lamp switch and the like, the transmission path of the message is terminal node a → relay node B → terminal node C.

The BLE Mesh system provided by the embodiment of the application is applied to the field of smart homes, and the convenience of controlling the smart terminal can be improved.

It is noted that fig. 5 is only one possible application scenario. Those skilled in the art can apply the BLE Mesh system to other application scenarios according to actual needs, which all shall be within the scope of the present application.

In the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

Those of ordinary skill in the art will appreciate that the various elements and algorithm steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided by the present invention, any function, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only an embodiment of the present invention, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A bluetooth-based wireless mesh network system, comprising: m relay nodes and N terminal nodes, wherein M is more than or equal to 2, and N is more than or equal to 2;

any two relay nodes in the M relay nodes are in communication connection, and each terminal node in the N terminal nodes is connected with a corresponding relay node in the M relay nodes;

the relay node is used for forwarding the received message to a terminal node or other relay nodes connected with the relay node in a unicast mode.

2. The wireless mesh network system of claim 1 wherein said end nodes comprise a buddy node and a low power node, said buddy node and said low power node being associated;

and the friend node is used for storing and/or answering the message related to the low-power consumption node.

3. The wireless mesh network system of claim 2,

and the friend node is also used for responding to the message inquiry request sent by the low-power consumption node and sending the stored message related to the friend node.

4. The wireless mesh network system of claim 2 wherein said buddy node is configured to store and/or respond to messages associated with said low power nodes, and in particular:

and the friend node is used for storing and/or answering the message related to the low-power-consumption node when the low-power-consumption node is in a dormant state.

5. The wireless mesh network system of claim 1 wherein said relay nodes are further configured to add and/or delete said terminal nodes.

6. A bluetooth-based wireless mesh network structure, comprising:

the application layer is used for determining whether the message of the source terminal node needs to be sent to the target terminal node;

the transmission layer is used for packaging the received message sent by the source terminal node and packetizing the message needing to be sent to the target terminal node;

a network layer, configured to configure a routing path between the source terminal node and the target terminal node, where the routing path includes one or more relay nodes, and a message of the source terminal node reaches the target terminal node through forwarding of the one or more relay nodes;

and the bearing layer is used for transmitting the message of the source terminal node to the target terminal node according to the routing path.

7. A control system for a bluetooth-based wireless mesh network, comprising: m relay nodes and N terminal nodes, wherein M is more than or equal to 2, and N is more than or equal to 2;

any two relay nodes in the M relay nodes are in communication connection, and each terminal node in the N terminal nodes is connected with a corresponding relay node in the M relay nodes;

the relay node is used for forwarding the received message to a terminal node or other relay nodes connected with the relay node in a unicast mode;

the N terminal nodes comprise one or more control nodes and one or more controlled nodes.

8. The control system according to claim 7, wherein the control node is an intelligent home controller, and the controlled node is an intelligent home device.

9. The control system of claim 8, wherein the smart home device is a smart light.

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