WO2019237264A1

WO2019237264A1 - Low power bluetooth communication method, electronic equipment, network and storage medium

Info

Publication number: WO2019237264A1
Application number: PCT/CN2018/090933
Authority: WO
Inventors: 朱洲; 李志晨; 刘延飞; 潘阳
Original assignee: 卧槽科技（深圳）有限公司
Priority date: 2018-06-13
Filing date: 2018-06-13
Publication date: 2019-12-19
Also published as: CN111971984A; CN111971984B

Abstract

Disclosed by the present invention are a low power Bluetooth communication method, electronic device, network and storage medium, the method comprising: scanning device nodes in a communication range; generating a first type path and a second type path according to routing information of the device nodes in the communication range, the first type path being a path for communicating with a root node by means of a relay device node in the communication range, and the second type path being a path for communicating with each device node in the communication range. By means of generating, in the current node, a first type path which may communicate with the root node and/or the second type path which may communicate with each device node in the communication range, not only are paths that need to be saved in a routing table is simplified, but also path selection when the current node communicates with the root node or other device nodes is facilitated, which increases the targeted nature of path selection and reduces the pressure on the root node; Moreover, when the root node fails, the current node can still communicate with other device nodes by means of a local Mesh network formed by a second type path.

Description

Bluetooth low energy communication method, electronic device, network and storage medium

Technical field

The present invention relates to Bluetooth networking technology, and in particular, to a low-power Bluetooth communication method, an electronic device, a network, and a storage medium.

Background technique

Bluetooth Low Energy (BLE) is a new Bluetooth 4.0 specification introduced by Bluetooth SIG on July 7, 2010. Its most important characteristics are extremely low power consumption and short distance. The traditional Bluetooth networking method uses a piconet (Piconet). Each piconet has one and only one master device, and the others are slave devices. That is, a master device can communicate with one or no more than one Bluetooth device within the Bluetooth communication range. 7 Bluetooth devices communicate.

In July 2017, the Mesh Working Group of Bluetooth proposed a BLE-based networking specification. This specification is a Mesh network technology based on the Flooding protocol. For low-power nodes in the Mesh network topology proposed by the specification, it can only communicate with There are friend nodes around to communicate, and more node roles are assigned in the use of the entire network.

The existing Bluetooth device networking usually adopts a tree networking method, but how to generate and quickly select the path between the ordinary device node and the root node, in order to improve the response speed of the Bluetooth network and ensure the success rate of message sending and receiving still need to be solved. Technical issues.

Summary of the Invention

In order to overcome the shortcomings of the prior art, an object of the present invention is to provide a Bluetooth low energy communication method, an electronic device, a network, and a storage medium. The pressure of the root node.

The objective of the present invention is achieved by the following technical solutions:

The Bluetooth low energy communication method includes the following steps:

Scan for device nodes within communication range;

Generating the first type path and the second type path according to the routing information of the device nodes in the communication range;

The first type of path is a path that communicates with a root node through a relay device node within the communication range;

The second type of path is a path that communicates with each device node within the communication range.

Further, after generating the first type path and the second type path according to the routing information of the device nodes within the communication range, the method further includes the following steps:

If the communication with the root node fails through the first type of path, information is sent to the corresponding device node in the communication range through the second type of path, so that the device node forwards the information.

Further, the failure to communicate with the root node through the first type of path specifically includes: power failure or failure of the root node.

Further, the Bluetooth low energy communication method further includes the following steps: if the root node is powered off or faulty, sending a root node disconnection notification to a user terminal within the communication range.

Further, after scanning the device nodes within the communication range, the method further includes the following steps:

Obtaining routing information from a device node within the communication range, where the routing information includes a hop value of a corresponding device node.

Further, the hop value of the relay device node is not greater than the hop value of each device node in the communication range.

Further, generating the first type path and the second type path according to the routing information of the device nodes in the communication range specifically includes the following steps:

If the hop value of any device node is not greater than the hop values of other device nodes in the communication range, generating a first type of path according to the routing information of the device node; and

A second type of path is generated according to the information of each device node within the communication range.

Sending an access notification to the root node according to the first type of path;

If the authorization of the root node is obtained, the first type path and the second type path are saved.

Acquiring information of a target node from a user terminal within the communication range;

If the target node is located in the second type of path, communication between the user terminal and the target node is established through the second type of path.

Further, after acquiring the information of the target node from the user terminal within the communication range, the method further includes the following steps:

If the target node is not in the second type of path, sending the information of the target node to the root node through the first path to establish the user terminal and the target node through the root node Communication.

If the communication between the user terminal and the target node fails to be established through the second type of path, information of the target node is sent to the root node through the first path to establish the root node through the root node. Communication between a user terminal and the target node.

Synchronize the first type of path to the root node.

Further, if there are multiple first-type paths generated according to the routing information of the device nodes in the communication range, after generating the first-type paths and the second-type paths according to the routing information of the device nodes in the communication range, It includes the following steps:

Mark one first-type path as the current path and mark the remaining first-type paths as backup paths.

Further, the marking a first-type path as a current path and marking the remaining first-type paths as standby paths is specifically:

According to the marking instruction obtained from the root node, a first type path is marked as a current path, and the remaining first type paths are marked as standby paths.

Further, the marking instruction is specifically generated by the root node according to a power parameter and / or a usage frequency of a corresponding device node of each first-type path.

An electronic device includes a memory, a processor, and a program stored in the memory. The program is configured to be executed by a processor. When the processor executes the program, the steps of the Bluetooth low energy communication method are implemented.

The Bluetooth low energy network includes a root node and at least one of the aforementioned electronic devices.

A storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, the steps of the Bluetooth low energy communication method described above are implemented.

Compared with the prior art, the embodiment of the present invention has the beneficial effect that, by generating a first-type path that can communicate with the root node and / or a second-type path that communicates with each device node in the communication range in the current node, both It simplifies the paths that need to be stored in the routing table, and facilitates the selection of paths when the current node communicates with the root node or other device nodes, improves the targeting of the path selection, and reduces the pressure on the root node; When the root node fails, the current node can still communicate with some other device nodes through the second type of path to form a local mesh network.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a Bluetooth network;

2 is a schematic flowchart of a Bluetooth low energy communication method according to the first embodiment of the present invention;

3 is a schematic flowchart of a Bluetooth low energy communication method according to a second embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an electronic device according to a third embodiment of the present invention.

detailed description

In the following, the present invention is further described with reference to the drawings and specific embodiments. It should be noted that, under the premise of no conflict, the embodiments described below or technical features can be arbitrarily combined to form a new embodiment. .

Figure 1 shows the structure of the Bluetooth network, which is the topology of the Mesh network. A mesh network composed of low-power Bluetooth devices, that is, BLE devices, does not require special pre-configuration when a BLE device node joins the mesh network. All BLE devices can act as relay devices in the mesh network for message forwarding to expand BLE communication. range.

In Figure 1, device node R is the root node, and device nodes A, B, C, D, E, F, G, H, I, J, and K are ordinary device nodes; each device node has a unique physical Address or other identifying information. Communication between device nodes is based on the GATT service defined by the protocol. This service can use two or more features to send and receive data between two device nodes. The root node R is used to manage and optimize the routing table of the entire Mesh network and maintain routing changes caused by device nodes joining the network, leaving the network, and moving device nodes. The dotted circle in Figure 1 indicates the BLE communication range of device node A. The user mobile terminal of this communication range, such as a mobile phone, tablet, or computer, can communicate with device node A, or through device node A and other ordinary devices in the Bluetooth network. The device node or root node R communicates.

As a preferred embodiment, the root node R is a non-power-sensitive Bluetooth low energy device. For example, a BLE device powered by AC power can be called a first type of BLE device. Other device nodes are generally power-sensitive. Bluetooth low energy devices, such as battery-powered BLE devices, are referred to as Type 2 BLE devices.

The first type of BLE device can be a device with only a single BLE communication function, or a device that has both BLE function and other external networks, such as Wi-Fi or Enternet, and other network communication functions. The second type of BLE device node is usually used for Achieve a single BLE communication function.

Example one

Figure 2 is a schematic flowchart of a Bluetooth low energy communication method.

The Bluetooth low energy communication method includes the following steps:

Step S110: The current node scans the device nodes within the communication range.

All the device nodes in the Mesh network are in the broadcast state. The broadcast period can be determined according to the frequency, time period and battery power of the device nodes in the routing table. All device nodes in the network can forward data information in the network for the relay device to expand the use range of Bluetooth low energy.

As shown in FIG. 1, taking device node A as the current node as an example, it is a device node that needs to access a Bluetooth network. The dotted circle is the BLE communication range of the current node A. Such device nodes will have a power switch or a similar power switch mechanism. This mechanism can be used to trigger the current node A's network access process.

When the user powers on the current node A to start working through the power switch of the current node A or a similar power switch mechanism, the current node A will check its own routing table information. If the routing table information in the current node A is empty at this time, Then device node A performs scanning and broadcasting within a certain time. In this embodiment, the current node A can scan the surrounding device node B and device node E.

As a preferred embodiment, if there are no other device nodes within the current node scanning communication range, the mode is switched to a broadcast state, and the broadcast information includes a network label, a device type, a battery level, and a hop value. The network label is used to identify and distinguish the Mesh network composed of the first type of BLE device nodes; the device type is used to identify and distinguish the device type of the device node, 0 is the first type of BLE device node, and 1 is the second type of BLE device node ; The battery level indicator is used to identify the battery level of the second-type BLE device node and whether it is lower than the preset usable threshold. If the second-type BLE device node detects that its own battery level is lower than the available battery level, it can be used. The threshold value of the broadcast packet is set to 1, otherwise the broadcast packet flag is set to 0; the hop value can be used to distinguish whether the device node is a networked device node or a non-networked device node. If the hop value is negative, it indicates that the A device node is a device node that is not connected to the network, that is, a node that cannot communicate with the root node. When the user terminal is located within the communication range of the current node A, it can be judged that the current node A has not successfully joined the Bluetooth network and is an isolated device node according to the broadcast information of the current node A.

As a preferred embodiment, after the current node scans a device node within the communication range, it obtains routing information from the device node within the communication range.

The device node B and the device node E that have already entered the network are always in a broadcast state, so the device node A can obtain their respective routing information from the device node B and the device node E.

As a preferred embodiment, the broadcast packet of the device node includes its own hop value, so the routing information includes the hop value of the corresponding device node.

The hop value can be used to distinguish whether a device node is a networked device node or a non-networked device node. For a networked device node, it can distinguish the position of the mesh network where the device node is located, that is, the number of times it needs to send and forward when communicating with the root node. Taking the Mesh network shown in Figure 1 as an example, if the hop value of the root node R is defined as 0, the hop values of the device nodes B, C, and D are 1, and the device nodes A, E, F, F, G, H, and The hop value of I is 2 and the hop values of device nodes K and J are 3; for a device node that is not on the network, its hop value can be marked as -1.

As a preferred embodiment, if all other device nodes in the current node scanning communication range are device nodes that are not connected to the network, that is, nodes that cannot communicate with the root node, it switches to the broadcast state. When the user terminal is within the communication range of the current node A, it can be judged that the current node A has not successfully joined the Bluetooth network and is an isolated device node based on the broadcast information of the current node A.

Step S120: The current node generates a first type path and a second type path according to the routing information of the device node within the communication range.

The current node A scans other device nodes in its communication range and obtains routing information of the corresponding device nodes. The routing information can indicate whether the corresponding device node can communicate with the root node. If it can, the hop value is a non-negative number. The routing information can also indicate the distance between the corresponding device node and the root node. In this embodiment, in the routing information of the networked device nodes B and E, the hop values are 1 and 2 respectively; it means that the routing tables of device nodes B and E contain the information of the root node R, so the current node A can pass the device node B and E establish a connection with the root node.

As a preferred embodiment, if the hop value of one or some device nodes in the communication range of the current node A is a positive number, for example, if the hop values of device nodes B and E are 1 and 2, respectively, it means that device node B and E route The table contains the information of the root node R; the current node A can establish a connection with the root node through such device nodes, such as device nodes B and E, that is, two paths can be generated based on the routing information of such device nodes, such as A-B —R and A—E—B—R.

The first type of path is a path through which a current node communicates with a root node through a relay device node within the communication range. Therefore, both paths can be used as the first type of path.

As a preferred embodiment, the hop value of the relay device node is not greater than the hop value of each device node in the communication range, that is, the one or more device nodes with the smallest hop value in the communication range of the current node are the relay device nodes. Therefore, in this embodiment, the device node B is a relay device node.

As a preferred embodiment, in step S120, the current node generates the first type path and the second type path according to the routing information of the device node within the communication range, and specifically includes the following steps:

Step S121: If the hop value of the current node according to a device node in the communication range is not greater than the hop value of other device nodes in the communication range, the current node generates a first type of path according to the device node.

If the hop value of the current node according to a certain device node in the communication range is not greater than the hop value of the other device nodes in the communication range, then the device node is the device node with the smallest hop value in the communication range of the current node, which is the relay device node. The current node generates a first-type path according to the device node, specifically, the current node generates a first-type path according to the routing information of the relay device node.

In this embodiment, the device node with the smallest hop value is preferentially selected as the relay node of the current node A and the root node R, that is, the shorter path is selected as the first-type path A-B-R. The first type of path generated by the current node A includes A-B-R, but not A-E-B-R.

Step S122: The current node generates a second type of path according to information of each device node in the communication range, such as a physical address or identification information. The second type of path is a path through which the current node communicates with each device node within the communication range. In this embodiment, the second type of path generated by the current node A includes A-E and A-B.

Take device node I as the current node as an example. If there are device nodes D, H, and J in the communication range, the first type of path generated includes I-D-R, and the second type of path includes I-D, I- H and I-J.

As a preferred embodiment, after generating the first type of path in step S121, the method further includes the following steps:

Step S123: The current node sends an access notification to the root node according to the first type of path; and the root node obtains an access notification from the current node.

In this embodiment, the current node needs to be approved by the root node before it can access the Bluetooth network with the root node as the main manager. Therefore, after the current node generates the first type of path, it needs to send an access notification to the root node. Specifically, the current node sends an access notification to the root node through a first type of path, such as A-B-R.

After the current node generates a first-type path, the first node is first notified to the root node through the first-type path that the current node will join the root node's Mesh network. If the root node receives the notification from the current node correctly, it sends an ACK (Acknowledgment) to the current node. If it does not receive the access notification from the current node, it sends a NAK (Negative Acknowledgment) to the current node to indicate a negative response or No answer. If the current node receives a NAK or does not receive a response from the root node after a predetermined time, the current node fails to join the network, and the current node becomes an orphan node that has not entered the network. If the current node receives the confirmation character ACK, it successfully completes the step of notifying the network, and then sends the access notification to the root node through the first type of path, such as A-B-R.

As a preferred embodiment, if the current node receives a NAK or does not receive a response from the root node after a predetermined time, it switches to the broadcast state. When the user terminal is located within the communication range of the current node A, it can be judged that the current node A has not successfully joined the Bluetooth network and is an isolated device node according to the broadcast information of the current node A.

If the root node agrees to the access notification of the current node, a path corresponding to the first type of path of the root node is generated according to the path of the access notification sent by the current node; The first type of path A-B-R sends an access notification to the root node, and then the root node generates a path R-B-A corresponding to the first type of path; the path is specifically that the root node passes the corresponding device node to the current node. The path of the node.

Therefore, in step S120, after the current node generates a first-type path according to the routing information of the device node within the communication range, the current node synchronizes the first-type path to the root node.

Step S124: If the current node obtains the authorization of the root node, save the first type path and the second type path.

If the root node agrees to perform network authorization on the current node, that is, a new device node to be connected to the network, that is, it agrees that the current node A joins the network, then sends an authorization instruction to the current node according to the previously generated path. After the current node obtains the authorization of the root node, the first type path and the second type path are stored.

As a preferred embodiment, after the root node grants network authorization to the current node, it also needs to successfully confirm joining the network at present before it will generate a path based on the first type of path that the current node sends an access notification, such as R-B —A is added to its routing table information.

If the root node does not grant network authorization to the current node after receiving the access notification from the current node, that is, it does not agree that the current node joins the network, the current node fails to join the network, and the device node becomes an orphan node that has not entered the network.

The current node obtains the authorization from the root node and successfully confirms joining the Bluetooth network, then saves the first type of path, such as A-B-R, and the second type of paths A-E and A-B in its routing table.

As a preferred embodiment, after the current node generates the first type path and the second type path according to the routing information of the device nodes in the communication range in step S120, the method further includes the following steps:

If the current node fails to communicate with the root node through the first type of path, the information is sent to the corresponding device node through the second type of path, so that the device node forwards the information.

When the root node stops working due to a power outage or a failure, the root node will lose the ability to manage other device nodes in the entire network, that is, the device nodes cannot communicate through the root node, and the current node and the root node through the first type of path Communication will also be in a failed state. The current node also maintains a second type of path, so the current node and other part of the device nodes can still form a local Mesh network for communication through the second type of path.

As shown in FIG. 1, when the root node R works normally, the device node A sends information to the root node through its first type path A-B-R, and then the root node R sends the information to the user terminal. When the root node R fails or fails, the device node A first sends the corresponding information to the device node B through its second type path A-B, and then the device node B sends the corresponding information to the device node C through its second type path B-C. The corresponding information is sent, and then the device node C sends the corresponding information to the device node D through its second type path C-D, and the device node D finally sends the information to the user terminal within its communication range.

In this embodiment, if the root node is powered off or faulty, when the current node communicates with the root node through a first-type path, a device node with a hop count of 1 in the first-type path fails to send information to the root node. The device node with a hop count of 1 reports to the current node that the root node is offline. After that, the current node sends a root node disconnection notification to the user terminal within its communication range, so that the user terminal prompts the relevant personnel to take action.

The Bluetooth low energy communication method provided by the embodiment of the present invention reduces the need by generating a first type path that can be connected to the root node and / or a second type path that is connected to each device node in the communication range in the current node. The path stored in the routing table also facilitates the selection of the path when the current node communicates with the root node or other device nodes, improves the targeting of the path selection, and reduces the pressure on the root node. When it fails, the current node can still communicate with some other device nodes through the second type of path to form a local mesh network.

Example two

The Bluetooth low energy communication method shown in FIG. 3 includes the following steps:

Step S210: The current node scans the device nodes within the communication range.

Step S220: The current node generates a first type path and a second type path according to the routing information of the device node within the communication range.

Steps S210 and S220 respectively correspond to S110 and S120 in the first embodiment, and details are not described again.

In this embodiment, the current node refers to a device node that communicates with a user terminal. For example, the user terminal establishes a connection with a device node somewhere, and the routing information of the device node is the first type path or the second type. The path communicates with the root node or other corresponding device node, and the device node is the current node. User terminal devices can be devices such as mobile phones, tablets, and computers with BLE communication capabilities.

Step S220 After the current node generates the first type path and the second type path according to the routing information of the device nodes in the communication range, the following steps are further included:

Step S230: The current node acquires information of the target node from a user terminal within the communication range.

As shown in FIG. 1, there is a user terminal within the Bluetooth communication range of the current node A. When the user terminal needs to establish communication with the device node D, it first scans the nearby device node A, that is, the current node A. Then the user terminal sends a message that needs to communicate with the device node D, that is, the target node D, to the current node A, and the current node A can know the information of the target node D.

Step S240: If the target node of the user terminal is the current node, the current node directly communicates with the user terminal. If not, perform the following steps:

Step S250: If the target node is located in the second type of path, the current node establishes communication between the user terminal and the target node through the second type of path.

After the current node A obtains the information of the target node D, it checks whether there is a second type path in the routing table to the target node D. If there is a second-type path A-D in the routing table of the current node A, the current node A sends the information to be sent to the target node D through the second-type path to establish communication between the user terminal and the target node, That is, the path: user terminal-A-D.

After the current node obtains the target node information from the user terminal, it first determines whether the target node is in its communication range through its second type of path. If so, it preferentially establishes the communication between the user terminal and the target node through the second path. The path selection speed Faster and shorter paths.

As a preferred embodiment, if the current node fails to establish communication between the user terminal and the target node through the second type of path, the information of the target node is sent to the root node through the first path, so as to The communication between the user terminal and the target node is established through the root node.

The failure of the current node to establish communication between the user terminal and the target node through the second type of path may be caused by the current node or the target node being moved. Because the device node will re-enter the network after the move, and update routing information, such as generating new first-type paths and second-type paths. At this time, the target node is not in the communication range of the current node, but can establish communication with the root node through the first type of path.

As a preferred embodiment, after the current node generates the first type path and the second type path according to the routing information of the device nodes in the communication range in step S220, the method further includes the following steps:

Step S260: If the target node is not located in the second type of path of the current node, the current node sends the information of the target node to the root node through the first path to establish the user through the root node Communication between the terminal and the target node.

That is, when the target node is located in the second type of path, but the current node fails to establish communication between the user terminal and the target node through the second type of path, or the target node is not located in the second type of path During the middle time, the current node establishes communication between the user terminal and the target node through the root node.

The current node first sends the information to be sent to the root node R through its first type of path A-B-R, and establishes the communication between the current node and the root node R. Since each device node generates the first node according to the routing information of the device node within the communication range. After the first type of path, the generated first type of path is synchronized to the root node, and the corresponding paths such as R-B-A, R-D are stored in the routing table of the root node. After the root node R acquires the user terminal from the current node A to communicate with the target node D through the root node R, it sends the corresponding information obtained from the current node A to the target node D through the path R-D; so far the current node A passes The root node R establishes the communication between the user terminal and the target node D.

The low-power Bluetooth communication method provided by the present invention can generate a first-type path that can communicate with the root node and / or a second-type path that can communicate with each device node in the communication range in the current node; The second type of path is used to establish communication between the user terminal and the target node through the second type of path. The path selection is faster and the path is shorter. When the second type of path fails or the target node is not located in the second type of path During intermediate time, the current node first sends the information to be sent to the root node through its first type of path, and then the root node sends the corresponding information to the target node to establish the communication between the user terminal and the target node through the root node. This facilitates the selection of the path when the current node communicates with the root node or other device nodes, improves the targetedness of the path selection, and reduces the pressure on the root node.

In an embodiment, in step S220, the current node generates multiple first-type paths according to the routing information of the device nodes in the communication range.

As shown in Figure 1, with device node K as the current node, in the process of adding device node K to the network, device node K can obtain corresponding routing information from device nodes F and G within its communication range, including the device node. The routing tables of F and G on R are F-C-R and G-C-R, respectively; and the hop values of device nodes F and G are both 2. Therefore, there are two first-type paths generated and saved by the current node K, that is, two paths to the root node R can be established in its routing table, which are K-F-C-R and K-G-C-R, respectively. .

As a further improvement of the embodiment of the present invention, if the current node generates multiple first-type paths according to the routing information of the device nodes in the communication range in step S220, the Bluetooth low energy communication method further includes the following steps:

Step S270: The current node marks one first-type path as the current path, and marks the remaining first-type path as standby paths.

As a preferred embodiment, if the current node fails to communicate with the root node through the current path, communicate with the root node through the standby path.

The current node K has more than one first-type path. Therefore, when communicating with the root node R, you can choose one of the paths, that is, the current path to communicate with the root node R. The remaining first-type paths are used as backup paths. When the current path fails, communication between the current node K and the root node R is established, thereby ensuring the success of message transmission and reception.

As a preferred embodiment, how to allocate the first type of path as the current path or the backup path is determined by the root node R. In step S270, the current node marks one first type of path as the current path and marks the remaining first type of path as standby. The path is specifically: the current node marks one first-type path as the current path, and marks the remaining first-type path as standby paths according to the marking instruction obtained from the root node.

According to the Bluetooth low energy communication method provided by the embodiment of the present invention, when there are multiple first-type paths between the current node and the root node, one first-type path is marked as the current path, and the rest are backup paths. When a node communicates with the root node, it preferentially communicates with the current node through the current path; when the current path fails, etc., the communication between the root node and the current node is established through the standby path, thereby ensuring the success rate of message transmission and reception.

After the current node generates the first type of path according to the routing information of the device node within the communication range, the current node will synchronize the first type of path to the root node, so the root node also has multiple paths corresponding to each of the first type of paths. For example, R-C-F-K and R-C-G-K respectively correspond to the first-type paths K-F-C-R and K-G-C-R.

As a preferred implementation manner, the marking instruction is specifically generated by the root node according to a power parameter and / or a usage frequency of a corresponding device node of each first-type path.

The power parameter of the device node can reflect the remaining power of the battery in the device node, and the usage frequency of the device node can reflect the frequency of the node device's forwarding data in the Bluetooth network as a relay node. By selecting the current path and the backup path according to the power parameter and / or the use frequency of the corresponding device node in each first type of path, the frequency of use of multiple first type paths can be balanced, and the battery power of the corresponding device nodes can be balanced, Thereby extending the service life of the entire network and improving the robustness of the entire network.

As shown in the two first-type paths K_F_C_R and K_G_C_R of the device node K in FIG. 1, the device node F and the device node G are corresponding device nodes, and through these two device nodes And / or use frequency to select the current path and backup path.

As a preferred embodiment, the broadcast packet data information of the Bluetooth low energy device node includes its battery power identifier, that is, the power parameter. In this embodiment, the power parameter is specifically a battery level (BL). For example, if the battery power level is 4, it can indicate that the device node has about 80% of the remaining power; if the battery power level is 0, it can indicate the device. Nodes have less than 10% of power remaining.

For the two first-type paths, one path may be selected as the current path and the other as the backup path according to the battery power levels of the device nodes F and G.

In the case where BL of two relay device nodes F and G is greater than 0, if the BL of device node F and device node G are the same, any one of the first type paths may be selected as the current path, and the remaining paths may be used as backup paths.

If the BL of the device node F is greater than the BL of the device node G, the root node R selects the first type of path passing through the device node F as the current path and the first type of path passing through the device node G as the backup path; that is, selects K-F —C—R is selected as the current path, and K—G—C—R is selected as the backup path. Conversely, if the BL of the device node F is smaller than the BL of the device node G, the root node R selects K-G-C-R as the current path and K-F-C-R as the backup path.

The usage frequency of the device node can reflect the frequency of the node device's forwarding data in the Bluetooth network as a relay node; the usage frequency can be counted by each device node itself, and then called by the root node, or it can be counted by the root node.

If BL of two relay device nodes F and G is greater than 0, and BL of device node F and device node G are the same, the corresponding first-type path may be further marked as the current path by the frequency of use of the corresponding device node.

As a preferred implementation, the current path of the root node R and the current node K in the first type of path that passes through the relay device node with a lower frequency is selected; for example, the frequency of use of the device node F is 10 times, and that of the device node G is If the frequency is 25 times, K-F-C-R is marked as the current path, and K-G-C-R is marked as the backup path.

After the root node R marks the current path and the standby path, it sends a marking instruction to the current node K; so that the current node marks the corresponding first-type path as the current path and the other first-type paths as the standby paths.

Therefore, if the frequency of use of a certain device node is high, the use of the first type of path can be reduced, thereby reducing the frequency that the path occupies the device node, thereby extending the life of the device node.

It can be known from the description of the foregoing embodiments that those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary universal hardware platform. Based on such an understanding, the technical solution of the present invention in essence or a part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk , Optical discs, etc., including a number of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention or certain parts of the embodiments, such as:

A storage medium storing a computer program that, when executed by a processor, implements the steps of the aforementioned Bluetooth low energy communication method.

The invention can be used in many general-purpose or special-purpose computing system environments or configurations. For example: personal computer, server computer, handheld or portable device, tablet device, multi-processor system, microprocessor-based system, set-top box, programmable consumer electronics device, network PC, small computer, mainframe computer, including the above Distributed computing environment of any system or device, etc., as in the third embodiment.

Example three

The electronic device shown in FIG. 4 includes a memory 200, a processor 300, and a program stored in the memory 200. The program is configured to be executed by the processor 300, and the processor 300 implements the foregoing low power consumption when executing the program. Steps of the Bluetooth communication method.

The electronic device in this embodiment and the method in the foregoing embodiment are based on two aspects under the same inventive concept. The method implementation process has been described in detail previously, so those skilled in the art can clearly understand based on the foregoing description. The structure and implementation process of the electronic device in this implementation are not repeated here for brevity of the description.

The electronic device in this embodiment may be applied to a Bluetooth low energy network as shown in FIG. 1, that is, the Bluetooth low energy network includes a root node and at least one of the electronic devices. The electronic device can implement the aforementioned Bluetooth low energy communication method when running on a Bluetooth low energy network. According to the description of the foregoing embodiments, the structure and implementation process of the Bluetooth low energy network can be understood. No longer.

The electronic device and the Bluetooth low energy network provided by the embodiment of the present invention generate a first-type path that can communicate with the root node and / or a second-type path that communicates with each device node in the communication range in the current node. It simplifies the paths that need to be stored in the routing table, and facilitates the selection of paths when the current node communicates with the root node or other device nodes, improves the targeting of the path selection, and reduces the pressure on the root node; When the root node fails, the current node can still communicate with some other device nodes through the second type of path to form a local mesh network.

The foregoing embodiments are merely preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited by this. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the present invention. Claimed scope.

Claims

The Bluetooth low energy communication method is characterized by including the following steps:

Scan for device nodes within communication range;

Generating the first type path and the second type path according to the routing information of the device nodes in the communication range;

The first type of path is a path that communicates with a root node through a relay device node within the communication range;

The second type of path is a path that communicates with each device node within the communication range.
The Bluetooth low energy communication method according to claim 1, wherein after generating the first type path and the second type path according to the routing information of the device nodes in the communication range, the method further comprises the following steps:

If the communication with the root node fails through the first type of path, information is sent to the corresponding device node in the communication range through the second type of path, so that the device node forwards the information.
The Bluetooth low energy communication method according to claim 2, wherein the failure to communicate with the root node through the first type of path specifically comprises: a power outage or failure of the root node.
The Bluetooth low energy communication method according to claim 3, further comprising the step of: if the root node is powered off or faulty, sending a root node disconnection notification to a user terminal within the communication range.
The Bluetooth low energy communication method according to claim 1, further comprising the following steps after the device nodes in the communication range are scanned:

Obtaining routing information from a device node within the communication range, where the routing information includes a hop value of a corresponding device node.
The method of claim 5, wherein the hop value of the relay device node is not greater than the hop value of each device node in the communication range.
The Bluetooth low energy communication method according to claim 6, wherein the generating the first type path and the second type path according to the routing information of the device nodes within the communication range, specifically comprising the following steps:

If the hop value of any device node is not greater than the hop values of other device nodes in the communication range, generating a first type of path according to the routing information of the device node; and

A second type of path is generated according to the information of each device node within the communication range.
The Bluetooth low energy communication method according to claim 7, wherein after generating the first type path and the second type path according to the routing information of the device nodes in the communication range, the method further comprises the following steps:

Sending an access notification to the root node according to the first type of path;

If the authorization of the root node is obtained, the first type path and the second type path are saved.
The Bluetooth low energy communication method according to claim 1, wherein after generating the first type path and the second type path according to the routing information of the device nodes in the communication range, the method further comprises the following steps:

Acquiring information of a target node from a user terminal within the communication range;

If the target node is located in the second type of path, communication between the user terminal and the target node is established through the second type of path.
The Bluetooth low energy communication method according to claim 9, wherein after acquiring the information of the target node from the user terminal within the communication range, the method further comprises the following steps:

If the target node is not in the second type of path, sending the information of the target node to the root node through the first path to establish the user terminal and the target node through the root node Communication.
The Bluetooth low energy communication method according to claim 10, wherein after acquiring the information of the target node from the user terminal within the communication range, the method further comprises the following steps:

If the communication between the user terminal and the target node fails to be established through the second type of path, information of the target node is sent to the root node through the first path to establish the root node through the root node. Communication between a user terminal and the target node.
The Bluetooth low energy communication method according to claim 11, wherein after generating the first type path and the second type path according to the routing information of the device nodes in the communication range, the method further comprises the following steps:

Synchronize the first type of path to the root node.
The Bluetooth low energy communication method according to claim 12, wherein if there are multiple first-type paths generated based on the routing information of the device nodes within the communication range, After the routing information generates the first type path and the second type path, the following steps are further included:

Mark one first-type path as the current path and mark the remaining first-type paths as backup paths.
The Bluetooth low energy communication method according to claim 13, wherein the marking a first-type path as a current path and marking the remaining first-type paths as standby paths are specifically:

According to the marking instruction obtained from the root node, a first type path is marked as a current path, and the remaining first type paths are marked as standby paths.
The Bluetooth low energy communication method according to claim 14, wherein the marking instruction is specifically generated by the root node according to a power parameter and / or a usage frequency of a corresponding device node of each first type of path.
The electronic device is characterized in that it includes a memory, a processor, and a program stored in the memory, the program is configured to be executed by a processor, and the processor implements the program according to any one of claims 1-15 when the processor executes the program. The steps of the Bluetooth low energy communication method are described.
The Bluetooth low energy network includes a root node and at least one electronic device according to claim 16.
A storage medium storing a computer program, characterized in that when the computer program is executed by a processor, the steps of the Bluetooth low energy communication method according to any one of claims 1-15 are implemented.