Temperature control type network optimization method and system for wireless ad hoc network

Abstract

The invention discloses a temperature control type network optimization method and system of a wireless ad hoc network, and the method comprises the steps: installing a temperature collection module and a heat dissipation device at a node of the wireless ad hoc network, sampling the related information of the node according to a preset period, generating an adjacent node detection message at the node, and broadcasting the detection message to an adjacent node, and the neighbor node sends a detection reply message to the node, sequentially writes related information of the node and the neighbor node into a temporary data queue, calculates a link quality average value of the node and the neighbor node to generate a node link quality priority list, and controls a heat dissipation device according to a difference value between the link quality average value and a threshold value. And generating a control message according to the link connection relationship, and updating the link and the network topology according to the control message. According to the method and the system, the working temperature and the energy consumption of the node equipment are effectively controlled, equipment performance reduction caused by long-term high-load work is avoided, and the problem of network delay caused by the equipment performance reduction is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless ad hoc networks, and in particular to a temperature-controlled network optimization method and system for wireless ad hoc networks. Background Art

[0002] Wireless ad hoc network is a self-organizing network system that uses wireless communication to dynamically form a network and transmit multi-hop transmission. Network optimization technology is a key technology in wireless ad hoc networks, and is very important for establishing network topology, data transmission delay, and the performance of the entire wireless ad hoc network. Long-term operation of wireless ad hoc network devices under high load will lead to device performance degradation and increase network latency. Based on the characteristics of wireless ad hoc networks with no center and dynamic network topology, designing a technology that can dynamically balance the load of ad hoc network devices is crucial to optimizing network performance.

[0003] At present, the main optimization method of wireless ad hoc networks is to optimize the network by manually configuring the parameters of each node device, including operating frequency, transmission power, and configuration routing. The application of wireless ad hoc networks is mainly in emergency scenarios in motion. Manual configuration will have a negative impact on response delay in wireless ad hoc network application scenarios with high real-time requirements.

[0004] The existing wireless ad hoc network optimization technology has the following disadvantages: 1. The use cost of professional wireless communication instruments used to optimize wireless ad hoc networks is high and the use method is complicated; 2. The network optimization measures of wireless ad hoc networks are relatively limited and basically rely on manual configuration of equipment parameters, which has the defect of untimely response; 3. If a node device of the wireless ad hoc network is in a high-load working state for a long time, the main control module and the power amplifier module will be in a high-temperature state for a long time, which will reduce the long-term reliability of the internal electronic components, resulting in a shorter service life and more failures. Summary of the invention

[0005] The present invention provides a temperature-controlled network optimization method and system for a wireless ad hoc network, which are used to solve the problems existing in the existing wireless ad hoc network optimization technology, namely, the use cost of professional wireless communication instruments used to optimize the wireless ad hoc network is high and the use method is complicated; the network optimization measures of the wireless ad hoc network are relatively limited and basically rely on manual configuration of equipment parameters, and there is a defect of untimely response; if a node device of the wireless ad hoc network is in a high-load working state for a long time, it will cause the main control module and the power amplifier module to be in a high-temperature state for a long time, which will reduce the long-term reliability of internal electronic components, resulting in a shorter service life and more failures. In one aspect, the present invention provides a temperature-controlled network optimization method for a wireless ad hoc network, comprising: Install temperature acquisition modules and heat dissipation devices on wireless ad hoc network nodes; Sampling the wireless ad hoc network node related information according to a preset period, the related information including the temperature data collected by the temperature collection module and the signal strength data of the wireless ad hoc network node; Generate a neighbor node detection message at the local node of the wireless ad hoc network node, and broadcast the detection message to the neighbor node; The neighboring node responds to the detection message and sends a detection reply message to the local node; Extracting the relevant information of the neighboring node in the detection reply message; Calculating the average link quality of the node according to the relevant information of the node, calculating the average link quality of the neighboring nodes according to the relevant information of the neighboring nodes, and generating a node link quality priority list based on the average link quality of the neighboring nodes; Controlling the operation of the heat dissipation device of the node and the signal strength data according to the difference between the link quality average value of the node and a threshold value; A link is established according to the node link quality priority list, a control message is generated according to the connection relationship of the link, and the link is updated according to the control message.

[0006] Preferably, the temperature acquisition module and the heat dissipation device are installed in the wireless ad hoc network node device.

[0007] Preferably, the content of the detection message includes a node ID and a timestamp.

[0008] Preferably, the relevant information of the local node and the neighboring nodes is sequentially written into the temporary data queue.

[0009] Preferably, the rule for generating the link quality priority list is: the larger the link quality average value, the lower the priority, and the smaller the link quality average value, the higher the priority.

[0010] Preferably, the local node determines the link building node and the candidate node according to the node link quality priority list, and generates a control message based on the link building node and the candidate node, wherein the control message includes a node ID and a routing rule.

[0011] Preferably, the control message updates the link and also updates the network topology.

[0012] In another aspect, the present invention provides a temperature-controlled network optimization system for a wireless ad hoc network, comprising: A temperature collection module, used for collecting the temperature data included in the relevant information; A power amplifier module, used to control the signal strength data of wireless ad hoc network nodes; A main control module, used to generate a neighbor node detection message at the local node of the wireless ad hoc network node, broadcast the detection message to the neighbor node, control the neighbor node to respond to the detection message, send a detection reply message to the local node, and extract the relevant information of the neighbor node in the detection reply message; a temperature control routing algorithm module, configured to calculate the average link quality of the node according to the relevant information of the node, calculate the average link quality of the neighboring node according to the relevant information of the neighboring node, generate a node link quality priority list based on the average link quality of the neighboring node, establish a link according to the node link quality priority list, generate a control message according to the connection relationship of the link, and update the link according to the control message; The heat dissipation control module is used to control the operation of the heat dissipation device of the node according to the difference between the link quality average value of the node and a threshold.

[0013] Preferably, the temperature acquisition module is installed on the surface of the main control module and the power amplifier module respectively, and the main control module and the temperature acquisition module adopt I 2 The power amplifier module and the main control module are connected via a SPI bus.

[0014] Preferably, the temperature acquisition module is a temperature sensor, the heat dissipation control module is a speed-adjustable heat dissipation fan, and the main control module controls the opening and closing of the fan in the node device through the I / O bus and adjusts the fan speed through the ADC bus; The temperature control routing algorithm module runs on the main control module.

[0015] Beneficial Effects The present invention controls the sending and receiving of detection messages, detection reply messages and control message data through a temperature control routing algorithm, adopts a link quality average value formula to calculate the link quality average value, controls the opening, closing and speed adjustment of the heat dissipation device of the node according to the comparison result with the link quality threshold, and adjusts the signal strength of the node, which can effectively control the node operating temperature and energy consumption, avoid the performance degradation of the equipment caused by long-term high-load operation, and solve the network delay problem caused by this.

[0016] To achieve this effect, only a low-cost temperature sensor and an adjustable-speed cooling fan need to be added, and there is no need to use expensive professional wireless communication instruments. The method of use is simple.

[0017] At the same time, the present invention uses a main control module to perform real-time dynamic control on the temperature acquisition module, the temperature control routing algorithm module, the heat dissipation control module, and the power amplifier module, thereby effectively avoiding the defect of untimely response caused by manual configuration of equipment parameters for network optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A flow chart of a temperature-controlled network optimization method for a wireless ad hoc network provided by an embodiment of the present invention; Figure 2 A connection diagram of a temperature-controlled network optimization system for a wireless ad hoc network provided by an embodiment of the present invention; Figure 3 A working diagram of a temperature-controlled network optimization system for a wireless ad hoc network provided by an embodiment of the present invention; Figure 4 A flowchart of a temperature control routing algorithm of a temperature control network optimization system for a wireless ad hoc network provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1 Figure 1 A flow chart of a temperature-controlled network optimization method for a wireless ad hoc network provided by an embodiment of the present invention. A temperature-controlled network optimization method for a wireless ad hoc network provided by an embodiment of the present invention comprises the following steps: S1. Install temperature acquisition modules and heat dissipation devices on wireless ad hoc network nodes.

[0022] Exemplarily, the temperature acquisition module and the heat dissipation device are installed in the wireless ad hoc network node device; S2. Sample the wireless ad hoc network node related information according to a preset period, wherein the related information includes the temperature data collected by the temperature collection module and the signal strength data of the wireless ad hoc network node.

[0023] S3. Generate a neighbor node detection message at the local node of the wireless ad hoc network node, and broadcast the detection message to the neighbor node.

[0024] Exemplarily, the content of the detection message includes a node ID and a timestamp.

[0025] S4. The neighboring node responds to the detection message and sends a detection reply message to the local node.

[0026] Exemplarily, when waiting for a detection reply message from a neighboring node, a waiting cycle needs to be started.

[0027] S5. Extract the relevant information of the neighboring node in the detection reply message.

[0028] Exemplarily, the relevant information of the local node and the neighboring node is sequentially written into the temporary data queue.

[0029] S6. Calculate the average link quality of the node according to the relevant information of the node, calculate the average link quality of the neighboring nodes according to the relevant information of the neighboring nodes, and generate a node link quality priority list based on the average link quality of the neighboring nodes.

[0030] Exemplarily, the rule for generating the link quality priority list is: the greater the link quality average value, the lower the priority; the smaller the link quality average value, the higher the priority; Furthermore, the link quality average value is calculated by inputting the signal strength of the current node and the neighboring node, the temperature of the main control module and the temperature of the power amplifier module sampled n times into the link quality average value formula, and replaces the link quality average value generated by the previous sampling n times.

[0031] S7. Control the operation of the heat dissipation device of the node and the signal strength data according to the difference between the link quality average value of the node and the threshold.

[0032] Furthermore, the main control module controls the opening, closing and operation status of the heat dissipation device, and also adjusts the signal strength data of the node device.

[0033] S8. Establish a link according to the node link quality priority list, generate a control message according to the connection relationship of the link, and update the link according to the control message.

[0034] Exemplarily, the local node determines the link establishment node and the candidate node according to the node link quality priority list, and generates a control message based on the link establishment node and the candidate node, wherein the control message includes a node ID and a routing rule.

[0035] Exemplarily, the control message updates the link and also updates the network topology.

[0036] Furthermore, the priorities of neighboring nodes are sorted according to the average link quality values ​​of neighboring nodes. The node link quality priority list is updated according to the rule that the larger the link quality average value, the lower the priority, and the smaller the link quality average value, the higher the priority. Links are established according to the node priorities. Nodes with high priorities are given priority to establish links. Nodes with low priorities give up establishing links when there are other routing paths. Nodes with the lowest priority lose the link. A control message containing the node ID and routing rules is generated and broadcast to the wireless ad hoc network. The target node receives the control message and updates the link and network topology.

[0037] The embodiment of the present invention also provides a temperature-controlled network optimization system for a wireless ad hoc network, such as Figure 2 As shown, including: A temperature collection module, used for collecting the temperature data included in the relevant information; A power amplifier module, used to control the signal strength data of wireless ad hoc network nodes; A main control module, used to generate a neighbor node detection message at the local node of the wireless ad hoc network node, broadcast the detection message to the neighbor node, control the neighbor node to respond to the detection message, send a detection reply message to the local node, and extract the relevant information of the neighbor node in the detection reply message; a temperature control routing algorithm module, configured to calculate the average link quality of the node according to the relevant information of the node, calculate the average link quality of the neighboring node according to the relevant information of the neighboring node, generate a node link quality priority list based on the average link quality of the neighboring node, establish a link according to the node link quality priority list, generate a control message according to the connection relationship of the link, and update the link according to the control message; The heat dissipation control module is used to control the operation of the heat dissipation device of the node according to the difference between the link quality average value of the node and a threshold.

[0038] Exemplarily, the temperature acquisition module is installed on the surface of the main control module and the power amplifier module respectively, and the main control module and the temperature acquisition module adopt I 2 The power amplifier module and the main control module are connected via a SPI bus.

[0039] Exemplarily, the temperature acquisition module is a temperature sensor, the heat dissipation control module is a speed-adjustable heat dissipation fan, and the main control module controls the opening and closing of the fan in the node device through the I / O bus and adjusts the fan speed through the ADC bus; The temperature control routing algorithm module runs on the main control module.

[0040] Furthermore, if Figure 3As shown, the temperature acquisition module periodically samples the surface temperature and signal strength data of the node main control module and the power amplifier module, the temperature control routing algorithm module runs on the main control module, the main control module starts the waiting period to broadcast the detection message to the neighboring node, when the local node receives the neighboring node detection reply message, it takes out the surface temperature and signal strength data of the neighboring node main control module and the power amplifier module, and calculates the link quality average value of the local node and the neighboring node respectively according to the link quality average formula. At the same time, on the one hand, the link quality average value of the local node is compared with the link quality threshold, and the fan is controlled to be turned on and off and the speed and signal strength data are adjusted according to the comparison result. On the other hand, a neighboring node link quality priority list is generated, and then a control message is generated to broadcast to the self-organizing network.

[0041] Furthermore, if Figure 4 As shown, at the beginning, the temperature data of the main control module, the temperature data of the power amplifier module and the signal strength data of this node are periodically sampled and written into the temporary data queue. At the same time, a detection message is sent to the neighboring node, and the waiting period is started. After the neighboring node detection reply message is received, the temperature data of the main control module, the temperature data of the power amplifier module and the signal strength data of the neighboring node are read and written into the temporary data queue. The relevant data is taken out from the temporary data queue, and the average link quality of this node and the neighboring node is calculated according to the link quality formula. On the one hand, the average link quality of this node is compared with the threshold. When it is greater than the threshold, the fan is turned off and the node transmission power is adjusted according to the difference. When it is less than the threshold, the fan is turned on and the fan speed and the node transmission power are adjusted according to the difference. The node transmission power here is the signal strength data. On the other hand, the neighboring nodes are sorted by the link quality average value to generate a node link quality priority list, generate a control message to broadcast to the self-organizing network, and the target node receives the control message to update the network topology. When these two tasks are completed, return to the starting position and repeat the above process.

[0042] Specifically, the temperature control routing algorithm module is a software algorithm for optimizing wireless ad hoc networks. It samples the surface temperature of the main control module and the power amplifier module in the device according to a preset period, uses the link quality formula to calculate the average value of the node link quality, compares it with the link quality threshold, adjusts the device transmission power according to the comparison result, controls the opening, speed adjustment and closing of the adjustable speed fan, and updates the neighbor node link quality priority list according to the link quality average value. Generate a control message based on the neighbor node link quality priority list and broadcast it to the wireless ad hoc network; The temperature control routing algorithm analyzes the temperatures of the main control module and the power amplifier module sampled n times and the changes in the node signal strength, calculates the average link quality, filters out error and jump data. The average link quality refers to the change in the link quality of the node within the wireless ad hoc network, which is obtained from the temperatures of the main control module and the power amplifier module sampled n times and the node signal strength according to the link quality calculation formula. The temperature of the main control module is represented by C1, the temperature of the power amplifier module is represented by C2, the signal strength is represented by R, and the average link quality is represented by X. Then the formula for the average link quality is:

[0043] Comparing with the set link quality threshold condition m, the transmission power is represented by w. If x < m, the internal cooling fan of the node is turned on, and the fan speed is adjusted to (x - m) * 100, and the transmission power is adjusted to w * (x - m) / x. If x > m, the cooling fan is turned off, and the transmission power is adjusted to w * (m - x) / x.

[0044] When a node receives a neighbor node probe response message, it calculates the average link quality of the neighbor node, sorts them according to the numerical size. The larger the value, the lower the priority, and the smaller the value, the higher the priority. It summarizes the node ID, the average link quality, and the link quality priority to generate a node link quality priority list, and builds or breaks links according to the priority level. Nodes with higher priority are given priority to build links, and nodes with lower priority give up building links. In this way, a control message containing the node ID and routing rules is generated and broadcast to the wireless ad hoc network. After receiving the control message, the target node updates the network topology according to the routing rules.

[0045] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0046] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A temperature-controlled network optimization method for a wireless ad hoc network, characterized in that: The following steps are involved: Install temperature acquisition modules and heat dissipation devices on wireless ad hoc network nodes; Sampling the wireless ad hoc network node related information according to a preset period, the related information including the temperature data collected by the temperature collection module and the signal strength data of the wireless ad hoc network node; Generate a neighbor node detection message at the local node of the wireless ad hoc network node, and broadcast the detection message to the neighbor node; The neighboring node responds to the detection message and sends a detection reply message to the local node; Extracting the relevant information of the neighboring node in the detection reply message; Calculating the average link quality of the node according to the relevant information of the node, calculating the average link quality of the neighboring nodes according to the relevant information of the neighboring nodes, and generating a node link quality priority list based on the average link quality of the neighboring nodes; Controlling the operation of the heat dissipation device of the node and the signal strength data according to the difference between the link quality average value of the node and a threshold value; A link is established according to the node link quality priority list, a control message is generated according to the connection relationship of the link, and the link is updated according to the control message.

2. The temperature-controlled network optimization method for a wireless ad hoc network according to claim 1, characterized in that: The temperature acquisition module and the heat dissipation device are installed in the wireless ad hoc network node device.

3. The temperature-controlled network optimization method for a wireless ad hoc network according to claim 1, characterized in that: The content of the detection message includes a node ID and a timestamp.

4. The temperature-controlled network optimization method for a wireless ad hoc network according to claim 1, characterized in that: The relevant information of the local node and the neighboring nodes is sequentially written into the temporary data queue.

5. The temperature-controlled network optimization method for a wireless ad hoc network according to claim 1, characterized in that: The rule for generating the link quality priority list is: the larger the link quality average value, the lower the priority, and the smaller the link quality average value, the higher the priority.

6. The temperature-controlled network optimization method for a wireless ad hoc network according to claim 1, characterized in that: The local node determines a link building node and a candidate node according to the node link quality priority list, and generates a control message based on the link building node and the candidate node, wherein the control message includes a node ID and a routing rule.

7. The temperature-controlled network optimization method for a wireless ad hoc network according to claim 1, characterized in that: The control message updates the link and also updates the network topology.

8. A temperature-controlled network optimization system for a wireless ad hoc network, characterized in that: A temperature-controlled network optimization method for a wireless ad hoc network according to any one of claims 1 to 7 is applied, wherein the system comprises: A temperature collection module, used for collecting the temperature data included in the relevant information; A power amplifier module, used to control the signal strength data of wireless ad hoc network nodes; A main control module, used to generate a neighbor node detection message at the local node of the wireless ad hoc network node, broadcast the detection message to the neighbor node, control the neighbor node to respond to the detection message, send a detection reply message to the local node, and extract the relevant information of the neighbor node in the detection reply message; a temperature control routing algorithm module, configured to calculate the average link quality of the node according to the relevant information of the node, calculate the average link quality of the neighboring nodes according to the relevant information of the neighboring nodes, generate a node link quality priority list based on the average link quality of the neighboring nodes, establish a link according to the node link quality priority list, generate a control message according to the connection relationship of the link, and update the link according to the control message; The heat dissipation control module is used to control the operation of the heat dissipation device of the node according to the difference between the link quality average value of the node and a threshold.

9. A temperature-controlled network optimization system for a wireless ad hoc network according to claim 8, characterized in that: The temperature acquisition module is installed on the surface of the main control module and the power amplifier module respectively. 2 The power amplifier module and the main control module are connected via a SPI bus.

10. The temperature-controlled network optimization system for wireless ad hoc networks according to claim 8, characterized in that: The temperature acquisition module is a temperature sensor, the heat dissipation control module is a speed-adjustable heat dissipation fan, and the main control module controls the opening and closing of the fan in the node device through the I / O bus and adjusts the fan speed through the ADC bus; The temperature control routing algorithm module runs on the main control module.

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