CN115529577A - Method, device, equipment and storage medium for data transmission in Bluetooth network - Google Patents

Abstract

The application relates to the technical field of smart home, and discloses a method, a device, equipment and a storage medium for data transmission in a Bluetooth network. The Bluetooth network comprises: the method comprises the following steps that a plurality of nodes consisting of devices which are distributed with networks and distribution network devices which are communicated with each node, wherein the method comprises the following steps: determining a node as a first forwarding node from the Bluetooth network; determining a 1-hop node corresponding to the first forwarding node according to the stored node information and the corresponding 1-hop node information, and determining one node as a second forwarding node; and forming a routing path comprising the first forwarding node and the second forwarding node, and carrying out data transmission in the Bluetooth network through the routing path. Therefore, the number of forwarding nodes is effectively reduced, redundant message forwarding is effectively avoided, the probability of channel collision is reduced, and node resources are saved.

Description

Method, device, device and storage medium for data transmission in bluetooth network

technical field

The present application relates to the field of smart home technology, for example, to a method, device, device and storage medium for data transmission in a Bluetooth network.

Background technique

Bluetooth mesh is a networking technology based on the low-power Bluetooth protocol, which solves the problem of many-to-many data transmission. The network-configured devices in the network are called nodes. Nodes have forwarding function and can forward the received data to other nodes by broadcasting. In this way, the communication range of nodes is increased. In this way, nodes can communicate with communicate with nodes outside of its broadcast capabilities.

Currently, Bluetooth mesh uses a managed flooding algorithm to forward messages, and restricts flooding. Among them, the first constraint may include: the node caches the received data, and compares it with the cached data when the data arrives, and does not forward it again if there is the same data. If there is no same data, forward the data and cache the data at the same time. This method is limited by the size of the cache area. If the cache area is too large, it will occupy node resources. If the cache area is too small, it will not be able to effectively prevent redundant data forwarding. The second constraint includes: setting a survival time TTL (Timetolive) value in the data packet, each time the node receives and forwards the data, the TTL value is reduced by 1, when the TTL is 0, the node will stop forwarding the data packet, for In this method, the TTL value is generally set to a large value for data availability, so this method can only reduce redundant data to a limited extent.

It can be seen that there are a large number of redundant messages in the Bluetooth network, and these redundant messages occupy physical channels and increase the power consumption of nodes.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is presented below. The summary is not intended to be an extensive overview nor to identify key/important elements or to delineate the scope of these embodiments, but rather serves as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide a method, device, device and storage medium for data transmission in a Bluetooth network, so as to solve the technical problem of too many redundant messages in the Bluetooth network. The bluetooth network includes: a plurality of nodes composed of network-distributed devices, and a network-distributed device that communicates with each node.

In some embodiments, the method includes:

From the Bluetooth network, determine a node as the first forwarding node;

According to the saved node information and the corresponding 1-hop node information, determine the 1-hop node corresponding to the first forwarding node, and determine a node as the second forwarding node;

forming a routing path including the first forwarding node and the second forwarding node, and performing data transmission in the Bluetooth network through the routing path.

In some embodiments, the device includes:

The first determining module is configured to determine a node from the Bluetooth network as the first forwarding node;

The second determination module is configured to determine one of the 1-hop nodes corresponding to the first forwarding node according to the stored node information and the corresponding 1-hop node information, and determine one node as the second forwarding node;

The path transmission module is configured to form a routing path including the first forwarding node and the second forwarding node, and perform data transmission in the Bluetooth network through the routing path.

In some embodiments, the device for data transmission in a Bluetooth network includes a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned Bluetooth network when executing the program instructions. data transfer method.

In some embodiments, the network distribution device includes the above-mentioned device for data transmission in a Bluetooth network.

In some embodiments, the storage medium stores program instructions, and when the program instructions are run, execute the above-mentioned method for data transmission in the Bluetooth network.

The method, device and equipment for data transmission in the Bluetooth network provided by the embodiments of the present disclosure can achieve the following technical effects:

The node information and the corresponding 1-hop node information are saved, so that the 1-hop node of each node can be selected, and the node and the corresponding 1-hop node form a routing path for data transmission in the Bluetooth network, thereby effectively reducing The number of forwarding nodes not only effectively avoids redundant message forwarding, but also reduces the probability of channel conflicts and saves node resources.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the corresponding drawings, and these exemplifications and drawings do not constitute a limitation to the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings are not limited to scale and in which:

FIG. 1 is a schematic diagram of a bluetooth network structure provided by an embodiment of the present disclosure;

FIG. 2 is a schematic flowchart of a data transmission method in a Bluetooth network provided by an embodiment of the present disclosure;

Fig. 3 is a schematic flowchart of a data transmission method in a Bluetooth network provided by an embodiment of the present disclosure;

Figures 4-1 and 4-2 are schematic diagrams of a node selection provided by an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a data transmission device used in a Bluetooth network provided by an embodiment of the present disclosure;

Fig. 6 is a schematic structural diagram of a device for data transmission in a Bluetooth network provided by an embodiment of the present disclosure.

detailed description

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances so as to facilitate the embodiments of the disclosed embodiments described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

Unless stated otherwise, the term "plurality" means two or more.

In the embodiments of the present disclosure, the character "/" indicates that the preceding and following objects are an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an associative relationship describing objects, indicating that there can be three relationships. For example, A and/or B means: A or B, or, A and B, these three relationships.

In the embodiment of the present disclosure, in the Bluetooth network, each node composed of network-distributed devices can maintain its own 1-hop node table, so that the network distribution devices in the Bluetooth network can save node information and corresponding 1-hop nodes In this way, when performing data transmission, the 1-hop node of each node can be selected, and the node and the corresponding 1-hop node form a routing path for data transmission in the Bluetooth network, thereby effectively reducing the number of forwarding nodes, not only It effectively avoids redundant message forwarding, reduces the probability of channel conflicts, and saves node resources. In addition, redundant lines can also be established, so that when the forwarding node in the routing path fails, the Bluetooth network can still perform normal data transmission, that is, communication.

Fig. 1 is a schematic structural diagram of a Bluetooth network provided by an embodiment of the present disclosure. As shown in FIG. 1 , the Bluetooth network includes: a plurality of nodes 100 composed of network-configured devices, and a network-distribution device 200 communicating with each node.

For example, smart homes include: air conditioners, refrigerators, TVs, door locks, washing machines, and more. These devices can perform network distribution based on Bluetooth technology. During the network distribution process, the network distribution device 200 can send provisioning data (Provisioning Data) to the network-to-be-provisioned device. The device 200 is configured, so that the device to be network-distributed is completed and becomes a network-distributed device, that is, a node in the smart home Bluetooth network.

After the device network configuration is completed, the nodes can use the "Mesh Message" type of broadcast message to communicate. Among them, the format of the "Mesh Message" type of broadcast message is shown in the following table:

length broadcast type content 0xXX 《Mesh Message》 Network layer PDU (Protocol Data Unit)

Among them, the network layer PDU format:

Among them, Time to Live (TTL) represents the number of message forwarding hops. Every time a message is forwarded, the TTL value is reduced by 1. If the maximum value is 127, the maximum number of forwarding times is 126. SRC represents the element address of the node, and the node has one or more elements, among which the network distribution device sends the address to the main element, and the addresses of the other elements are accumulated sequentially. DST is the destination address, and the multicast address of the destination address defines the following fixed addresses:

address value Fixed multicast address name 0xFF00—0xFFFB reserve 0xFFFC all proxy nodes 0xFFFD all friend nodes 0xFFFE all relay nodes 0xFFFF all nodes

It can be seen from the destination address table that 0xFF00-0xFFFB are reserved addresses and are not used. TransportPDU is the data carried by the broadcast packet.

In the embodiment of the present disclosure, after the device network configuration is completed, the node needs to obtain and save the node information and the corresponding 1-hop node information. That is, in the Bluetooth network, after the devices are successfully configured, each node needs to obtain and save the node information and the corresponding 1-hop node information.

Taking one of the nodes as the current node as an example, the current node that has completed the distribution network broadcasts and sends the command packet to obtain the 1-hop node. Since the 1-hop node does not need to be forwarded, the TTL in the command packet to obtain the 1-hop node can be forwarded. Count "0". Moreover, 0xFF00-0xFFFB in the destination address table are reserved addresses and are not used. Therefore, an address can be selected from here to represent the command to obtain a 1-hop node. For example: 0xFFFB is selected. Therefore, the format of the network layer PDU to obtain the 1-hop node command packet is:

IVI NIDs CTL TTL SEQ SRC DST TransportPDU NetMIC - - - 0 - source address 0xFFFB transport layer PDU -

That is, the destination address DST is an address value in the reserved address values of the broadcast message, and the time-to-live TTL is the forwarding hop count "0".

In this way, after the current node broadcasts and obtains the 1-hop node command packet, it can receive the 1-hop node command return packet sent by the neighbor node, that is, the 1-hop reachable node. In the 1-hop node command return packet, the SRC is set to The main element address of this node (the node that receives the 1-hop node command packet) and DST is set to the current node (the node that sends the 1-hop node command packet) main element address. Therefore, the current node can return the packet according to the received 1-hop node command, and determine the corresponding 1-hop node information, thereby saving the node information and the corresponding 1-hop node information. In some embodiments, a 1-hop node can be formed surface.

In the Bluetooth network, each node that completes the distribution network saves the corresponding 1-hop node information, such as: 1-hop node table, and can send the corresponding 1-hop node information to the distribution network device, so that the distribution network device can Obtain and save the information of each node in the Bluetooth network and its corresponding 1-hop node information.

Therefore, the configuration device can select a corresponding routing path for data transmission in the Bluetooth network according to the saved node information and the corresponding 1-hop node information.

Fig. 2 is a schematic flowchart of a data transmission method in a Bluetooth network provided by an embodiment of the present disclosure. As shown in Figure 2, the process of data transmission in the Bluetooth network may include:

Step 201: From the Bluetooth network, determine a node as the first forwarding node.

In the bluetooth network, there are multiple nodes composed of network-configured devices, and one node can be randomly determined as the first forwarding node, or one node can be determined as the first forwarding node according to the distance position information. Or, in some embodiments, according to the stored node information and corresponding 1-hop node information, determine the node with the most 1-hop nodes; and determine the node with the most 1-hop nodes as the first forwarding node. After the Bluetooth networking is completed, the node information and the corresponding 1-hop node information have been saved in the distribution network device. Therefore, the node with the most 1-hop nodes can be obtained according to the saved node information and the corresponding 1-hop node information; thus, The node with the most 1-hop nodes is determined as the first forwarding node.

Step 202: According to the saved node information and the corresponding 1-hop node information, determine the 1-hop node corresponding to the first forwarding node, and determine one node as the second forwarding node.

According to the saved node information and the corresponding 1-hop node information, the 1-hop node corresponding to the first forwarding node can be determined, and then, a node is determined as the second forwarding node.

Step 203: Form a routing path including the first forwarding node and the second forwarding node, and perform data transmission in the Bluetooth network through the routing path.

The routing path needs to cover all nodes in the Bluetooth network. Therefore, if the 1-hop node of the first forwarding node can cover all nodes in the Bluetooth network, a routing path including the first forwarding node and the second forwarding node can be formed, and pass Routing paths carry out data transmission in the Bluetooth network.

In some embodiments, when the 1-hop node corresponding to the determined forwarding node cannot cover all nodes in the Bluetooth network, a node is determined to be the third forwarding node from the 1-hop node corresponding to the determined forwarding node until The 1-hop nodes corresponding to all determined forwarding nodes cover all nodes in the Bluetooth network; form a routing path including the first forwarding node, the second forwarding node and the third forwarding node, and the 1-hop node of the first forwarding node cannot cover the Bluetooth network In the case of all nodes in .

That is, the 1-hop node corresponding to the first forwarding node and the 1-hop node corresponding to the second forwarding node cannot cover all nodes in the Bluetooth network, and another node can still be determined as the third node from the 1-hop node corresponding to the first forwarding node. The forwarding node, or, according to the saved node information and the corresponding 1-hop node information, determine the 1-hop node corresponding to the second forwarding node, and determine one node as the third forwarding node.

Certainly, if the determined forwarding node can cover all nodes in the Bluetooth network, a routing path including the first forwarding node, the second forwarding node and the third forwarding node is formed. If all the determined forwarding nodes cannot cover all the nodes in the Bluetooth network, it is necessary to continue from the first forwarding node, the second forwarding node or the third forwarding node to the corresponding one-hop node according to the saved node information and the corresponding one-hop node information Among them, a node is determined to be the fourth forwarding node, and so on until all nodes in the Bluetooth network are covered, thus, a routing path is formed by all the determined forwarding nodes, and data transmission in the Bluetooth network can be performed through the routing path.

It can be seen that in the embodiment of the present disclosure, when the device performs Bluetooth distribution network and becomes a node in the Bluetooth network, it needs to obtain the corresponding 1-hop node information by sending a command packet with a set format to obtain the corresponding 1-hop node information, and report it to the distribution network In this way, the distribution network equipment maintains the node information and its corresponding 1-hop node information in the entire Bluetooth network, so that the 1-hop node of each node can be selected, and the routing path is formed by the node and the corresponding 1-hop node. The data transmission in the Bluetooth network thus effectively reduces the number of forwarding nodes, which not only effectively avoids redundant message forwarding, but also reduces the probability of channel conflicts and saves node resources.

In some embodiments, if there is a forwarding node transmission failure in the formed routing path, a communication failure may occur in the Bluetooth network. Therefore, in order to improve the success rate of Bluetooth network communication, a redundant line can also be established, that is, a redundant line is formed. redundant lines, and perform data transmission in the Bluetooth network through the redundant lines, wherein at least one or more forwarding nodes in the redundant lines are different from the routing path.

Similarly, redundant lines can be formed based on the saved node information and the corresponding 1-hop node information. For example, a forwarding node in the routing path can be used as an avoiding node, that is, the avoiding node is not included in the redundant line, and each time According to the stored node information and the corresponding 1-hop node information, the node may not be selected as the forwarding node when determining the corresponding forwarding node.

In the following, the operation process is integrated into a specific embodiment to illustrate the data transmission process used in the Bluetooth network provided by the embodiment of the present invention.

In this embodiment, 9 devices have been configured successfully, that is, the Bluetooth network includes 9 nodes a, b, c, d, e, f, g, h, and i. These nodes can only communicate horizontally or vertically at a distance of 1 grid. Then, after each node sends the get 1-hop node command packet in the above format, it can obtain the corresponding 1-hop node information according to the received 1-hop node command return packet. , and send the corresponding 1-hop node information to the distribution network device, so that the distribution network device saves the node information and the corresponding 1-hop node information as shown in Table 1, that is, the 1-hop node table maintained by the distribution network device is:

node information 1 hop node information a b.d b a,c,e c b, f d a,e,g e b, d, f, h f c, e, i g d, h h e, g, i i f, h

Table 1

Fig. 3 is a schematic flowchart of a data transmission method in a Bluetooth network provided by an embodiment of the present disclosure. Fig. 4-1 and Fig. 4-2 are schematic diagrams of node selection provided by an embodiment of the present disclosure. Combined with Figures 3, 4-1, and 4-2, the data transmission process in the Bluetooth network includes:

Step 301: According to Table 1, determine the node e with the most 1-hop nodes as the first forwarding node.

Step 302: Determine node d as the second forwarding node according to the 1-hop node information corresponding to node e.

The 1-hop nodes corresponding to node e are nodes b, d, f, and h respectively, and node d may be determined as the second forwarding node.

Step 303: Determine node f as the third forwarding node.

The 1-hop nodes corresponding to node d are nodes a and g, so, as shown in Figure 4-1, the covered nodes include: e, b, d, f, h, a, g, but there is no node i is covered, it is also necessary to determine node f as the third forwarding node.

Step 304: Form a routing path including nodes d, e, f.

Step 305: Select node b as the forwarding node.

Step 306: According to Table 1, from the 1-hop nodes corresponding to node b, select node a as the forwarding node.

Step 307: According to Table 1, from the 1-hop nodes corresponding to node b, select node c as the forwarding node.

As shown in Figure 4-2, the 1-hop nodes corresponding to node b and node a respectively cannot cover all nodes in the Bluetooth network. Therefore, continue to select node c as the forwarding node.

Step 308: According to Table 1, from the 1-hop nodes corresponding to node a, select node d as the forwarding node.

Step 309: According to Table 1, from the 1-hop nodes corresponding to node c, select node f as the forwarding node.

Step 310: According to Table 1, from the 1-hop nodes corresponding to node d, select node g as the forwarding node.

As shown in Figure 4-2, the 1-hop nodes corresponding to the determined forwarding nodes a, b, c, d, and f do not include node h, that is, the 1-hop nodes corresponding to the determined forwarding nodes cannot cover all the nodes in the Bluetooth network. Therefore, it is also necessary to select node g as the forwarding node from the 1-hop nodes corresponding to node d.

Step 311: Form redundant lines including a, b, c, d, f, g.

Wherein, step 301-step 304 and step 305-step 311 can be performed synchronously.

Step 312: Perform data transmission in the Bluetooth network through the routing path, and perform data transmission in the Bluetooth network through redundant lines in the case that the routing path cannot perform data transmission.

The routing path includes fewer nodes, which can effectively reduce the number of forwarding nodes, avoid redundant message forwarding, reduce the probability of channel conflicts, and save node resources. Moreover, the node e is avoided in the redundant line, so that if the node e fails, the Bluetooth network can transmit data through the redundant line, which improves the success rate of the Bluetooth network communication.

Certainly, in some other embodiments, other nodes may also be chosen to be avoided, such as node a, node c, etc., to form redundant lines, and specific examples will not be given one by one.

It can be seen that in this embodiment, the 1-hop node table maintained by the distribution network equipment, in this way, the 1-hop node of each node can be selected, and the routing path and the redundant line are formed by the node and the corresponding 1-hop node. In this way, through Routing paths or redundant lines carry out data transmission in the Bluetooth network, thereby effectively reducing the number of forwarding nodes, not only effectively avoiding redundant message forwarding, but also reducing the probability of channel conflicts, saving node resources, and improving Bluetooth The success rate of network communication.

According to the above process for data transmission in the Bluetooth network, a device for data transmission in the Bluetooth network can be constructed.

Fig. 5 is a schematic structural diagram of a data transmission device in a Bluetooth network provided by an embodiment of the present disclosure. As shown in FIG. 5 , the device includes: a first determination module 510 , a second determination module 520 and a path transmission module 530 .

The first determining module 510 is configured to determine a node from the Bluetooth network as the first forwarding node.

The second determining module 520 is configured to determine a 1-hop node corresponding to the first forwarding node according to the stored node information and corresponding 1-hop node information, and determine one node as the second forwarding node.

The path transmission module 530 is configured to form a routing path including the first forwarding node and the second forwarding node, and perform data transmission in the Bluetooth network through the routing path.

In some embodiments, the network acquisition module 410 is specifically configured to acquire the current indoor temperature and humidity value uploaded by the household appliances bound to the drying equipment in the smart home system; or, from the weather forecast database, acquire the location of the drying equipment The current temperature and humidity value of the location is determined as the current indoor temperature and humidity value of the room where the drying equipment is located.

In some embodiments, it also includes: an obtaining and saving module configured to obtain the 1-hop node information sent by each node in the Bluetooth network, and save the node information and the corresponding 1-hop node information, wherein the 1-hop node information is completed After the current node of the distribution network broadcasts and obtains the 1-hop node command packet, it is determined according to the received 1-hop node command return packet.

Among them, the acquisition of the 1-hop node command packet is a broadcast message of the "Mesh Message" type, wherein the format of the network layer protocol data unit PDU includes:

Wherein, the destination address DST is an address value in the reserved address values of the broadcast message, and the time-to-live TTL is the forwarding hop count "0".

In some embodiments, the path transmission module 530 is further configured to determine one of the 1-hop nodes corresponding to the determined forwarding node when the 1-hop node corresponding to the determined forwarding node cannot cover all nodes in the Bluetooth network. The node is the third forwarding node until the 1-hop nodes corresponding to all determined forwarding nodes cover all nodes in the Bluetooth network; a routing path including the first forwarding node, the second forwarding node and the third forwarding node is formed.

In some embodiments, it also includes: a redundant transmission module configured to form a redundant line, and perform data transmission in the Bluetooth network through the redundant line, wherein at least one of the redundant line and the routing path or Multiple forwarding nodes are different.

It can be seen that in this embodiment, the device for data transmission in the Bluetooth network can select the 1-hop node of each node according to the saved node information and the corresponding 1-hop node information, and form the node and the corresponding 1-hop node. The routing path is used for data transmission in the Bluetooth network, thereby effectively reducing the number of forwarding nodes, not only effectively avoiding redundant message forwarding, but also reducing the probability of channel conflicts, saving node resources, and forming redundant lines for Bluetooth network transmission. The data transmission ensures that when the sending node in the routing path fails, the Bluetooth network can still communicate normally, which improves the success rate of Bluetooth network communication.

An embodiment of the present disclosure provides a device for data transmission in a Bluetooth network, the structure of which is shown in Figure 6, including:

A processor (processor) 1000 and a memory (memory) 1001 may also include a communication interface (Communication Interface) 1002 and a bus 1003 . Wherein, the processor 1000 , the communication interface 1002 , and the memory 1001 can communicate with each other through the bus 1003 . Communication interface 1002 may be used for information transfer. The processor 1000 can invoke logic instructions in the memory 1001 to execute the method for data transmission in the Bluetooth network of the above-mentioned embodiments.

In addition, the above logic instructions in the memory 1001 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product.

The memory 1001, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 1000 executes functional applications and data processing by running the program instructions/modules stored in the memory 1001, that is, implements the method for data transmission in the Bluetooth network in the above method embodiments.

The memory 1001 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the terminal device, and the like. In addition, the memory 1001 may include a high-speed random access memory, and may also include a non-volatile memory.

An embodiment of the present disclosure provides a data transmission device in a Bluetooth network, including: a processor and a memory storing program instructions, and the processor is configured to execute a data transmission method in a Bluetooth network when executing the program instructions.

An embodiment of the present disclosure provides a network distribution device, including the above-mentioned data transmission device in a Bluetooth network.

An embodiment of the present disclosure provides a storage medium, which stores program instructions, and when the program instructions are run, execute the above-mentioned method for data transmission in a Bluetooth network.

An embodiment of the present disclosure provides a computer program product, the computer program product includes a computer program stored on a storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer executes The above is used for the data transmission method in the bluetooth network.

The above-mentioned storage medium may be a transitory computer-readable storage medium, or a non-transitory computer-readable storage medium.

The technical solutions of the embodiments of the present disclosure can be embodied in the form of software products, which are stored in a storage medium and include one or more instructions to make a computer device (which can be a personal computer, a server, or a network equipment, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. A medium that can store program code, or a transitory storage medium.

The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, procedural, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present disclosure includes the full scope of the claims, and all available equivalents of the claims. When used in the present application, although the terms 'first', 'second', etc. may be used in the present application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, a first element could be called a second element, and likewise, a second element could be called a first element, as long as all occurrences of "first element" are renamed consistently and all occurrences of "Second component" can be renamed consistently. The first element and the second element are both elements, but may not be the same element. Also, the terms used in the present application are used to describe the embodiments only and are not used to limit the claims. As used in the examples and description of the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well unless the context clearly indicates otherwise . Similarly, the term "and/or" as used in this application is meant to include any and all possible combinations of one or more of the associated listed ones. Additionally, when used in this application, the term "comprise" and its variants "comprises" and/or comprising (comprising) etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of additional identical elements in the process, method or apparatus comprising said element. Herein, what each embodiment focuses on may be the difference from other embodiments, and the same and similar parts of the various embodiments may refer to each other. For the method, product, etc. disclosed in the embodiment, if it corresponds to the method part disclosed in the embodiment, then the relevant part can refer to the description of the method part.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software may depend on the specific application and design constraints of the technical solution. Said artisans may implement the described functions using different methods for each particular application, but such implementation should not be regarded as exceeding the scope of the disclosed embodiments. The skilled person can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units may only be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored, or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the disclosure. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions. In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific agreement between different operations or steps. order. For example, two consecutive operations or steps may, in fact, be performed substantially concurrently, or they may sometimes be performed in the reverse order, depending upon the functionality involved. Each block in the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by dedicated hardware implemented in combination with computer instructions.

Claims (10)

1. A method for data transmission in a bluetooth network, the bluetooth network comprising: the method comprises the following steps that a plurality of nodes consisting of devices which are distributed with networks and distribution network devices which are communicated with each node, wherein the method comprises the following steps:

determining a node as a first forwarding node from the Bluetooth network;

determining a 1-hop node corresponding to the first forwarding node according to the stored node information and the corresponding 1-hop node information, and determining one node as a second forwarding node;

and forming a routing path comprising the first forwarding node and the second forwarding node, and carrying out data transmission in the Bluetooth network through the routing path.

2. The method of claim 1, wherein prior to determining that a node is a first forwarding node, further comprising:

and acquiring 1-hop node information sent by each node in the Bluetooth network, and storing the node information and the corresponding 1-hop node information, wherein the 1-hop node information is determined according to a received 1-hop node command return packet after the current node of the distribution network broadcasts and sends the acquired 1-hop node command packet.

3. The method of claim 2, wherein the get 1-hop node command packet is a Mesh Message type broadcast packet, and wherein a format of a network layer Protocol Data Unit (PDU) comprises:

wherein, the destination address DST is one address value in the reserved address values of the broadcast message, and the survival time TTL is the forwarding hop count of 0.

4. The method of claim 1, wherein determining that one node is a first forwarding node comprises:

determining the nodes with the most 1-hop nodes according to the stored node information and the corresponding 1-hop node information;

and determining the node with the most 1-hop nodes as the first forwarding node.

5. The method of claim 1, wherein forming a routing path that includes the first forwarding node and the second forwarding node comprises:

under the condition that the 1-hop nodes corresponding to the determined forwarding nodes can not cover all the nodes in the Bluetooth network, determining one node as a third forwarding node from the 1-hop nodes corresponding to the determined forwarding nodes until all the nodes in the Bluetooth network are covered by the 1-hop nodes corresponding to all the determined forwarding nodes;

forming a routing path including the first forwarding node, the second forwarding node, and the third forwarding node.

6. The method of any one of claims 1-5, further comprising:

and forming a redundant line, and performing data transmission in the Bluetooth network through the redundant line, wherein the redundant line is different from at least one or more forwarding nodes in the routing path.

7. An apparatus for data transmission in a bluetooth network, the bluetooth network comprising: a plurality of nodes comprising devices for which a network has been distributed, and a network distributor in communication with each node, the apparatus comprising:

a first determining module configured to determine a node as a first forwarding node from the bluetooth network;

the second determining module is configured to determine a 1-hop node corresponding to the first forwarding node according to the stored node information and the corresponding 1-hop node information, and determine one node as a second forwarding node;

a path transmission module configured to form a routing path including the first forwarding node and the second forwarding node, and perform data transmission in the bluetooth network through the routing path.

8. An apparatus for data transmission in a bluetooth network, the apparatus comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for data transmission in a bluetooth network according to any one of claims 1 to 6 when executing the program instructions.

9. A network distribution device, comprising: an arrangement according to claim 7 or 8 for data transmission in a bluetooth network.

10. A storage medium storing program instructions which, when executed, perform a method for data transmission in a bluetooth network according to any one of claims 1 to 6.

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