CN111669832A - Automatic channel selection method and device for wireless ad hoc network - Google Patents
Automatic channel selection method and device for wireless ad hoc network Download PDFInfo
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- CN111669832A CN111669832A CN202010446351.0A CN202010446351A CN111669832A CN 111669832 A CN111669832 A CN 111669832A CN 202010446351 A CN202010446351 A CN 202010446351A CN 111669832 A CN111669832 A CN 111669832A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application relates to an automatic channel selection method and device for wireless ad hoc networks. The method comprises the following steps: under the current channel, IP broadcast information is sent to a slave node in the wireless network; the wireless network comprises a main node and a slave node wirelessly connected with the main node; determining the number of slave nodes for networking under the current channel; and traversing all channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking. According to the automatic channel selection method for the wireless ad hoc network, the number of the slave nodes which carry out networking under the current channel is determined by the master node, the available networking channels are traversed by the master node, the channel with the largest number of the slave nodes which carry out networking is selected to carry out the wireless networking, the environment where the current wireless network is located can be adapted, the largest number of devices which are added into the wireless network is ensured, and the channel which can realize the optimal ad hoc network is automatically selected to carry out the wireless ad hoc network.
Description
Technical Field
The present application relates to the field of wireless ad hoc network technologies, and in particular, to an automatic channel selection method and apparatus for a wireless ad hoc network.
Background
The wireless ad hoc network equipment has the networking technical advantages of self-organization, self-management and the like, and can meet the requirements of wireless ad hoc network in an area without public network coverage, and implement various tasks such as communication guarantee, environment monitoring, obstacle clearing and the like.
However, networking and communication performance of the wireless ad hoc network device is greatly influenced by an electromagnetic environment, and when interference occurs or changes occur in the electromagnetic environment in which the wireless ad hoc network device operates, the communication performance of the wireless ad hoc network is greatly influenced, and further the task execution capability of the wireless ad hoc network device is influenced. For interference signals outside the working frequency band, filtering can be performed through radio frequency, intermediate frequency, digital filter and other devices, but for interference in the channel frequency band, interference in the channel frequency band is mostly avoided through frequency hopping, antenna zeroing and frequency changing.
At present, there is a channel selection technology suitable for wireless networking, which determines availability of frequency resources by detecting interference conditions in a wireless environment and selects a corresponding channel for networking, but the technology cannot ensure the number of devices added to a wireless network and cannot ensure the realization of an optimal ad hoc network by automatic frequency selection.
Disclosure of Invention
In view of the above, there is a need for an automatic channel selection method and apparatus for wireless ad hoc networks that automatically selects a channel according to the interference situation of the electromagnetic environment in which the wireless ad hoc network is located.
An automatic channel selection method for wireless ad hoc networks, comprising:
under the current channel, IP broadcast information is sent to a slave node in the wireless network; the wireless network comprises a main node and a slave node wirelessly connected with the main node.
And determining the number of slave nodes for networking under the current channel.
And traversing all channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking.
In one embodiment, before traversing all channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking, the method further includes: and acquiring a networking device list, wherein the networking device list comprises device identifications in a wireless network. And if the number of the slave nodes is equal to the number of the device identifiers in the networking device list under the current channel, performing wireless ad hoc networking under the current channel.
In one embodiment, after traversing all channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking, the method further includes: when a decrease in the number of nodes in the wireless network is detected, it is determined whether to perform a handover of a channel of the wireless network.
In one embodiment, the step of determining the number of slave nodes that perform networking on the current channel includes: first response information transmitted by the first slave node in response to the IP broadcast information is received. And receiving second response information forwarded by the first slave node and sent by the second slave node in response to the IP broadcast information. And determining the number of slave nodes which carry out networking under the current channel according to the number of the received first response information and the second response information.
In one embodiment, before traversing all channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking, the method further includes: acquiring the channel quality parameters of all the channels, and determining the number of slave nodes for networking under each channel according to the sequence of the channel quality parameters from high to low.
An automatic channel selection apparatus for a wireless ad hoc network, comprising:
the IP broadcasting module is used for sending IP broadcasting information to a slave node in a wireless network under a current channel; the wireless network comprises a main node and a slave node wirelessly connected with the main node;
the slave node number determining module is used for determining the number of slave nodes which carry out networking under the current channel;
and the channel selection module is used for traversing all the channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking.
In one embodiment, the system further includes a networking device list acquiring module, configured to acquire a networking device list. The networking device list includes device identifiers in the wireless network. And if the number of the slave nodes is equal to the number of the device identifiers in the networking device list under the current channel, performing wireless ad hoc networking under the current channel.
In one embodiment, the wireless network node detection module is further included, and is configured to determine whether to perform a channel switch of the wireless network when the number of nodes in the wireless network is detected to decrease.
In one embodiment, the system further includes a channel quality parameter obtaining module, configured to obtain channel quality parameters of all channels, and determine, according to the sequence from high to low of the channel quality parameters, the number of slave nodes that perform networking under each channel.
A wireless ad hoc network device comprises a main control computer, an ad hoc network communication module, a frequency spectrum sensing module and a radio frequency front end, wherein a computer program is stored in the main control computer, and when the main control computer executes the computer program, the method in any embodiment is realized.
According to the automatic channel selection method and device for the wireless ad hoc network, the number of the slave nodes which conduct networking under the current channel is determined by the master node, the master node traverses all available networking channels, and the channel with the largest number of the slave nodes which conduct networking is selected to conduct wireless networking. The method and the device can adapt to the environment of the current wireless network, ensure that the number of devices added into the wireless network is the largest, and automatically select the channel capable of realizing the optimal ad hoc network to carry out wireless ad hoc network.
Drawings
Fig. 1 is a diagram illustrating an application scenario of an automatic channel selection method in a wireless ad hoc network according to an embodiment;
FIG. 2 is a flow diagram illustrating a method for automatic channel selection for a wireless ad hoc network in one embodiment;
fig. 3 is a block diagram of an automatic channel selection apparatus of a wireless ad hoc network in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The automatic channel selection method for the wireless ad hoc network provided by the application can be applied to the application environment shown in fig. 1. The plurality of devices are ad hoc networks through wireless channels to become nodes in a wireless network, the control station is in direct communication with the master node, and the master node is in direct communication with each slave node or in indirect communication through other slave nodes. The master node and the slave nodes in the wireless ad hoc network may not be limited to various unmanned aerial vehicles, notebook computers, smart phones, tablet computers, and portable wearable devices having a wireless ad hoc network communication function.
In one embodiment, as shown in fig. 2, an automatic channel selection method for a wireless ad hoc network is provided, which is described by taking the method as an example of being applied to a master node in fig. 1, and includes the following steps:
step 202: under the current channel, IP broadcast information is sent to a slave node in the wireless network; the wireless network comprises a main node and a slave node wirelessly connected with the main node.
Step 204: and determining the number of slave nodes for networking under the current channel.
Step 206: and traversing all channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking.
Specifically, an ad hoc network-based wireless network system needs to perform ad hoc networking at the time of startup to establish a wireless network including a plurality of devices. Devices participating in an ad hoc network may be peer-to-peer or may have different node functionalities. When ad hoc networking is performed, the control station sends an instruction to a device within the communication range of the control station, and the instruction is set as a main node for controlling and executing the ad hoc networking process. After the device which does not receive the instruction is started, each channel of the device is monitored to receive the message of the main node, and the message is used as a slave node to participate in the wireless ad hoc network under the control of the main node.
When selecting the networking channel, the main node firstly selects a channel to send IP broadcast information for networking, when receiving the IP broadcast information, the slave node locks the channel receiving the IP broadcast information, and sends a networking response message responding to the IP broadcast information to the main node through the channel. And after receiving the networking response message, the master node judges that the slave node is added into the wireless network under the current channel. The duration T for the master node to send IP broadcast information should be no less than the time required for each slave node to listen to all of its channels. The main node sends IP broadcast information on each channel and records the number of the slave nodes which are networked under each channel. And after traversing all the channels, the master node selects the channel with the largest number of slave nodes for networking, and uses the channel for ad hoc networking.
In the automatic channel selection method and apparatus for wireless ad hoc network provided in this embodiment, a master node determines the number of slave nodes performing networking in a current channel, and traverses available networking channels, and selects a channel with the largest number of slave nodes performing networking to perform wireless networking. The method can adapt to the environment of the current wireless network, ensures that the number of devices added into the wireless network is the largest, and automatically selects the channel capable of realizing the optimal ad hoc network to carry out wireless ad hoc network.
In one embodiment, in order to determine whether all slave nodes join the wireless network under the current channel, the method further includes the following steps: and acquiring a networking device list, wherein the networking device list comprises device identifications in a wireless network. And if the number of the slave nodes is equal to the number of the device identifiers in the networking device list under the current channel, performing wireless ad hoc networking under the current channel. Specifically, the master node obtains a networking device list, and identification information such as an ID or a serial number corresponding to a device that should participate in ad hoc networking in the system is given in the list. The master node compares the slave nodes and the networking device list which are networked under a channel, when the number of the slave nodes and the number of the device identifications in the networking device list which are networked are equal, the fact that all devices in the system under the current channel complete the self-networking is indicated, and then the channel is selected to conduct the self-networking.
In the method provided by this embodiment, the device identifiers in the device list and the slave nodes that perform ad hoc networking in the current channel are compared to determine whether all devices in the system are added to the current wireless network, so that the master node does not need to traverse all channels and compare the number of slave nodes that perform ad hoc networking in each channel, the efficiency of the ad hoc networking process is improved, and the time required by ad hoc networking can be shortened.
In one embodiment, in order to continuously adapt to the change of the channel quality after the system completes the ad hoc network, the method further includes the following steps: when a decrease in the number of nodes in the wireless network is detected, it is determined whether to perform a handover of a channel of the wireless network.
The wireless network is greatly affected by the environment, and when interference occurs, some devices may exit the wireless network due to too poor channel quality, so that the number of nodes of the wireless network is reduced, and the performance of the system is limited. In this embodiment, the number of nodes in the wireless network is detected, and when the number of nodes in the wireless network is detected to be reduced according to the routing table information, the node probe message, and the like, the master node may determine whether to restart the automatic channel selection process again according to a preset rule or according to an instruction of the master station, and switch to another channel for networking.
In one embodiment, determining the number of slave nodes performing networking in the current channel according to the response message directly sent or forwarded by the slave nodes includes: first response information transmitted by the first slave node in response to the IP broadcast information is received. And receiving second response information forwarded by the first slave node and sent by the second slave node in response to the IP broadcast information. And determining the number of slave nodes which carry out networking under the current channel according to the number of the received first response information and the second response information.
Specifically, when the slave node responds to the IP broadcast information sent by the master node, the slave node may select to directly send a response message to the master node according to a channel condition with the master node, or select to forward the response message to the master node through another slave node. By forwarding the message between the slave nodes and the range of the device participating in the ad hoc network, the coverage area of the wireless network established by the ad hoc network is wider; and the devices can select the route with the best channel quality according to specific environment for communication, thereby improving the communication quality of the wireless network.
In one embodiment, to improve the efficiency of the automatic channel selection process of the master node, the method further includes: acquiring the channel quality parameters of all the channels, and determining the number of slave nodes for networking under each channel according to the sequence of the channel quality parameters from high to low.
Specifically, before starting the automatic channel selection process, the master node first acquires channel quality parameters of each channel, such as channel noise floor, and sequentially acquires the number of slave nodes performing networking from the channel with the smallest channel noise floor. Networking is started from the channel with better channel quality, so that the efficiency of the automatic channel selection process can be improved, and the time is saved.
Further, the slave node can also obtain the channel quality parameters of each channel when starting, and similarly, the slave node monitors each channel in sequence from the channel with the minimum channel background noise, so that the efficiency of the automatic channel selection process can be further improved. The system is provided with 1 main node and m slave nodes, each node is provided with n channels, and the channels of each node are sequenced according to the channel quality parameters to generate a channel list. The channel list for each node in the system is shown in table 1.
Table 1 node channel list
In one embodiment, the wireless ad hoc network communication system uses a default device as a master node and other devices as slave nodes. When the system is started, the main node starts the automatic channel selection process, and the default state of the slave node is to scan and monitor all channels and try to receive the message sent by the main node. The networking process of the system comprises the following steps: the main node sends IP broadcast information on a default channel to try to perform ad hoc network, and the number of network access slave nodes is judged according to response messages to the IP broadcast information, sent by the slave nodes, received on the default channel. When the master node judges that the slave node does not access the network, a channel bottom noise acquisition instruction is sent to the slave node through a default channel, the slave node is controlled to acquire bottom noise data of the channel, and meanwhile, the master node also starts to acquire the bottom noise data of each channel.
And each node acquires the bottom noise data of each channel through a spectrum sensing module according to the channel list of each node, reports the bottom noise data of each channel to a main control computer, and the main control computer sorts the channels according to the bottom noise data of each channel to generate the channel list of each node. And after the channel list is generated, the slave node enters a scanning monitoring state.
The master node selects a channel as the current channel to carry out IP broadcasting according to the sequence of the channel list of the master node, wherein the duration is T, and T is not less than the sum of the time required by other slave nodes to scan all the channels; the slave nodes switch channels according to the sequence of the respective channel lists, and attempt to receive the IP broadcast sent by the master node.
When the slave node receives the IP broadcast information of the master node, the slave node locks the channel in the channel receiving the IP broadcast information, returns response information to the master node through the route receiving the IP broadcast information, and simultaneously broadcasts and forwards the IP broadcast information of the master node in the channel.
After receiving the response information directly sent or forwarded by the slave node, the master node judges that the slave node sending the response information has accessed the network. And if all the slave nodes are accessed to the network within the duration T, the master node locks the current channel and sends a channel locking instruction to the slave nodes to complete the wireless ad hoc network. If the slave nodes do not access the network within the duration T, the master node records the number of the network access slave nodes of the channel, sends a channel scanning instruction, controls the slave nodes to enter a scanning monitoring state, and switches to the next channel in the channel list to send IP broadcast information until all the slave nodes access the network or traverse all the channels.
And after the main node traverses all the channels, the main node selects the channel with the largest number of the slave nodes for networking according to the recorded number of the slave nodes of each channel, and sends a channel scanning instruction and IP broadcast information again for self-networking.
When detecting that a certain node quits the network, the console can manually judge whether frequency re-selection networking is needed.
It should be understood that, although the steps in the flowchart of fig. 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 2 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
An automatic channel selection apparatus for a wireless ad hoc network, comprising: the IP broadcasting module is used for sending IP broadcasting information to a slave node in a wireless network under a current channel; the wireless network comprises a main node and a slave node wirelessly connected with the main node; the slave node number determining module is used for determining the number of slave nodes which carry out networking under the current channel; and the channel selection module is used for traversing all the channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking.
In one embodiment, the system further includes a networking device list acquiring module, configured to acquire a networking device list. The networking device list comprises device identifications in a wireless network; and if the number of the slave nodes is equal to the number of the device identifiers in the networking device list under the current channel, performing wireless ad hoc networking under the current channel.
In one embodiment, the wireless network node detection module is further included, and is configured to determine whether to perform a channel switch of the wireless network when the number of nodes in the wireless network is detected to decrease.
In one embodiment, the slave node number determining module is further configured to receive first response information sent by the first slave node in response to the IP broadcast information; receiving second response information forwarded by the first slave node and sent by the second slave node in response to the IP broadcast information; and determining the number of slave nodes which carry out networking under the current channel according to the number of the received first response information and the second response information.
In one embodiment, the system further includes a channel quality parameter obtaining module, configured to obtain channel quality parameters of all channels, and determine, according to the sequence from high to low of the channel quality parameters, the number of slave nodes that perform networking under each channel.
Specific limitations on the automatic channel selection apparatus for the wireless ad hoc network can be referred to the above limitations on the automatic channel selection method for the wireless ad hoc network, and will not be described herein again. The respective modules in the automatic channel selection apparatus for a wireless ad hoc network described above may be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
A wireless ad hoc network device comprises a main control computer, an ad hoc network communication module, a frequency spectrum sensing module and a radio frequency front end. The frequency spectrum sensing module is communicated with the main control machine through a serial port or a network port, and channel quality parameters are obtained through the radio frequency front end under the control of the main control machine and are sent to the main control machine. The ad hoc network communication module is communicated with the main control computer through a serial port, a general purpose input/output port (GPIO) or a network port, and under the control of the main control computer, the ad hoc network communication module sends IP broadcast information through the radio frequency front end, receives response information of the slave device to the IP broadcast information and carries out wireless ad hoc network. The main control computer stores a computer program therein, and when the main control computer executes the computer program, the method described in any one of the above embodiments is implemented.
In one embodiment, a wireless ad hoc network device is provided, the internal structure of which may be as shown in fig. 3. The main control computer includes computer equipment including processor, memory, network interface and data base connected via system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing a networking device list, a device channel list, channel quality parameters of each channel, routing table information and the like. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement an automatic channel selection method for wireless ad hoc networks.
Those skilled in the art will appreciate that the architecture shown in fig. 3 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An automatic channel selection method for wireless ad hoc networks, comprising:
under the current channel, IP broadcast information is sent to a slave node in the wireless network; the wireless network comprises a main node and the slave node wirelessly connected with the main node;
determining the number of the slave nodes which carry out networking under the current channel;
and traversing all channels, determining the number of the slave nodes for networking under each channel, selecting the channel with the maximum number of the slave nodes for networking, and performing wireless ad hoc networking.
2. The method of claim 1, wherein the step of traversing all channels, determining the number of slave nodes for networking in each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking further comprises:
acquiring a networking device list; the networking device list includes: a device identification in a wireless network;
and if the number of the slave nodes is equal to the number of the device identifiers in the networking device list under the current channel, performing wireless ad hoc network under the current channel.
3. The method of claim 1, wherein the step of traversing all channels, determining the number of slave nodes for networking in each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking further comprises:
determining whether to perform a handover of a channel of the wireless network when a decrease in the number of nodes in the wireless network is detected.
4. The method according to any of claims 1 to 3, wherein the step of determining the number of slave nodes that are networked in the current channel comprises:
receiving first response information sent by a first slave node in response to the IP broadcast information;
receiving second response information forwarded by the first slave node and sent by a second slave node in response to the IP broadcast information;
and determining the number of the slave nodes which carry out networking under the current channel according to the number of the received first response information and the second response information.
5. The method according to any one of claims 1 to 3, wherein the step of traversing all channels, determining the number of slave nodes for networking under each channel, selecting the channel with the largest number of slave nodes for networking, and performing wireless ad hoc networking further comprises:
acquiring channel quality parameters of all channels, and determining the number of slave nodes which perform networking under the channels according to the sequence of the channel quality parameters from high to low.
6. An automatic channel selection apparatus for a wireless ad hoc network, comprising:
the IP broadcasting module is used for sending IP broadcasting information to a slave node in a wireless network under a current channel; the wireless network comprises a main node and the slave node wirelessly connected with the main node;
the slave node number determining module is used for determining the number of the slave nodes which carry out networking under the current channel;
and the channel selection module is used for traversing all channels, determining the number of the slave nodes for networking under each channel, selecting the channel with the largest number of the slave nodes for networking, and performing wireless ad hoc network.
7. The apparatus of claim 6, further comprising,
the networking device list acquisition module is used for acquiring a networking device list; the networking device list includes: a device identification in a wireless network;
and if the number of the slave nodes is equal to the number of the device identifiers in the networking device list under the current channel, performing wireless ad hoc network under the current channel.
8. The apparatus of any of claims 6 to, further comprising:
and the wireless network node detection module is used for determining whether to switch the channel of the wireless network when detecting that the number of the nodes in the wireless network is reduced.
9. The apparatus of any one of claims 6 to 8, further comprising:
and the channel quality parameter acquisition module is used for acquiring the channel quality parameters of all the channels and determining the number of the slave nodes which perform networking under the channels according to the sequence of the channel quality parameters from high to low.
10. A wireless ad hoc network device comprises a main control computer, an ad hoc network communication module, a frequency spectrum sensing module and a radio frequency front end, wherein a computer program is stored in the main control computer, and when the main control computer executes the computer program, the method of any one of claims 1 to 5 is realized.
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| CN112738915A (en) * | 2020-12-25 | 2021-04-30 | 南方电网数字电网研究院有限公司 | Edge network self-learning wireless ad hoc network method and device and computer equipment |
| CN113872713A (en) * | 2021-09-30 | 2021-12-31 | 湖南智领通信科技有限公司 | Automatic frequency selection method, device and equipment of wireless ad hoc network based on wide-band and narrow-band fusion |
| CN114034928A (en) * | 2021-11-22 | 2022-02-11 | 上海柘中电气有限公司 | Harmonic wave tracing method based on distributed multipoint feedback and power distribution network analysis system |
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