231 results about "Wireless ad hoc network" patented technology

The invention discloses a multi-communication link management platform and method for a wireless ad hoc network, and relates to the technical field of wireless communication, and the platform comprises a situation awareness module which is used for collecting data and generating situation data in combination with a three-dimensional digital map; the link occlusion risk prediction module is used for generating a predictive occlusion index based on the situation data; the multi-link comprehensive efficiency evaluation module is used for receiving the predictive shielding index and calculating and outputting a link comprehensive efficiency score in combination with the operation cost data; and the predictive switching decision and execution module is used for responding to the switching condition and switching the service data flow from the currently activated link to the inactivated link with the highest link comprehensive performance score. According to the method, communication interruption is avoided by actively predicting switching, expensive links are used as required, a multi-target model is adopted, the cost is reduced, and the method can flexibly adapt to service requirements.

The invention provides a multi-modal fire-fighting robot cluster cooperation method and system, a medium and a product, and relates to the technical field of fire-fighting robots, and the method comprises the steps: obtaining own multi-modal sensing data collected by a fire-fighting robot cluster in real time, and generating a corresponding local environment model for each robot in the cluster; the working state of the current master control fire-fighting robot is monitored, if abnormity is found, the master control performance of a non-master control robot cluster (except the current master control robot) is analyzed according to the local environment models, and a new master control fire-fighting robot is determined; acquiring associated multi-mode sensing data collected by a new master controller from the local environment model of the slave robot cluster through a wireless ad hoc network, and generating a new global collaborative operation strategy according to the associated multi-mode sensing data; and distributing the new global collaborative operation strategy to each robot of the non-master-control robot cluster, and controlling the robots to carry out fire-fighting operation according to the strategy. The technical problem that a fire-fighting robot cluster is difficult to collaboratively carry out fire-fighting operation under the condition that a master control node fails in the prior art is solved.

The invention discloses a communication method and system of a wireless ad hoc network, and relates to the technical field of wireless ad hoc networks. The method is applied to a data link layer of the wireless ad hoc network, the wireless ad hoc network comprises a plurality of nodes, each node communicates according to a time frame period, each node comprises an interception mode and a sending mode, and the method comprises the following steps: in the current time frame period, each node executes the following steps: receiving data in the interception mode, and sending the received data in the sending mode; updating a node neighbor table based on the received data; judging whether data sending time is up or not according to the information of each neighbor node in the node neighbor table; and switching to the sending mode to send the data under the condition of determining that the data sending time is up, and switching to the interception mode after the data is successfully sent. The whole wireless ad hoc network does not need complex interactive protocols such as time slot distribution, time slot recovery and the like, so that the decentralized wireless ad hoc network in a real sense is realized.

The invention discloses a tunnel PLC device wireless ad hoc network construction method supporting APP linkage, and belongs to the field of tunnel communication, and the method comprises the following steps: S1, constructing a signal comprehensive attenuation model based on tunnel geometric parameters, and obtaining a three-dimensional mixed channel matrix; s2, hierarchically expressing multi-dimensional data of tunnel physical topology, communication state and equipment operation by using a digital twin model to obtain a virtual model; s3, designing a double-link switching module supporting switching of PLC communication and wifi communication; and S4, designing multi-protocol conversion and management authority of APP cooperative control. By adopting the tunnel PLC equipment wireless ad hoc network construction method supporting APP linkage, the communication reliability, real-time performance and anti-interference problems of the PLC equipment ad hoc network in a complex tunnel environment are solved by fusing technologies such as laser scanning modeling, digital twinning, reinforcement learning and multi-protocol conversion, and the whole process optimization from environment perception to intelligent maintenance is realized.

The invention relates to the technical field of agricultural intellectualization, and discloses a fruit tree growth monitoring system based on multi-sensor fusion, which comprises a multi-mode sensor array, an integrated soil humidity sensor, a three-dimensional ultrasonic ranging sensor, a hyperspectral imaging sensor and a microenvironment meteorological station, and realizes multi-parameter synchronous acquisition; a nonlinear data calibration model adopts a layered architecture, and cross interference between sensors is eliminated; a dynamic weight distribution algorithm is built in the edge computing node, multi-source heterogeneous data are fused in real time, a fruit tree growth situation map is generated, and a low-power-consumption processor is adopted to support lightweight AI model deployment; the self-adaptive power supply module adopts a photovoltaic-temperature difference composite power generation structure to realize cable-free deployment; the wireless ad hoc network communication unit constructs an inter-tree relay network based on a LoRa protocol, supports low-power-consumption remote data return, and integrates a relay node health degree evaluation mechanism. The real-time performance of fruit tree growth monitoring, the data reliability and the situation analysis accuracy are improved.

The invention provides a low-power-consumption wireless ad hoc network dynamic configuration method and system based on adaptive routing, and relates to the technical field of network protocols, and the method comprises the steps: determining a data transmission path through obtaining node working state parameters and calculating an energy level value, and setting a multi-level data cache occupation threshold value; calculating a network load distribution state, and carrying out differentiated scheduling on nodes; selecting a low-power-consumption forwarding channel based on node routing adaptability; and monitoring the network state in real time and updating parameters. According to the invention, the network adaptability is improved, the communication power consumption is reduced, the network life cycle is prolonged, and the data transmission efficiency is improved.

The invention relates to the technical field of wireless communication, and discloses a method and a device for constructing a wireless ad hoc network without a signal area based on chain networking, and the method comprises the steps: carrying out the collaborative fusion of an identity label and a communication capability of a node in the chain networking, and obtaining the node capability information of the chain networking; performing relay capability evaluation on a target node in the wireless ad hoc network to obtain a topology construction basis; performing optimization forming on candidate nodes in the wireless ad hoc network to obtain a chain network topology of the wireless ad hoc network; establishing a bidirectional communication link between nodes in the chain network topology to form a preliminary communication network of the wireless ad hoc network; detecting the link communication quality of the preliminary communication network step by step to obtain a hierarchical link state of the wireless ad hoc network; dynamically negotiating a hierarchical link state, and establishing a stable communication path of the wireless ad hoc network; according to the invention, the construction accuracy of the chain networking-based wireless ad hoc network in the non-signal area can be improved.

The invention relates to the technical field of fire-fighting navigation systems, and discloses a high-precision Beidou navigation system based on fire-fighting water source positioning. A water source feature acquisition module of the system acquires fire hydrant and underground pipe network surface material reflectivity data through a multispectral imager, and generates a water source feature vector set; the Beidou signal enhancement module is used for carrying out error correction on the original Beidou satellite signal by adopting a carrier phase difference technology; the dynamic base station network is used for deploying a plurality of base station nodes in an urban building dense area, and each node synchronously receives Beidou signals, calculates atmospheric delay errors and transmits the atmospheric delay errors to the central processing module through a wireless ad hoc network; the three-dimensional terrain matching module is used for carrying out iterative alignment on the building contour data scanned by the laser radar and the urban GIS elevation data, and establishing a centimeter-level precision three-dimensional model of the surrounding environment of the fire-fighting water source; and the multi-source data fusion module is used for receiving all the data and outputting optimal positioning coordinates of the fire-fighting water source.

The invention discloses a high-level geological disaster chain monitoring node deployment method based on a wireless ad hoc network, and relates to the technical field of geological disaster monitoring and early warning, and the method comprises the following steps: S1, obtaining interference characteristics through a time-frequency observation layer triggered by an earthquake, and building a time baseline; s2, identifying a cross-channel coupling relationship according to the energy spectrum and the drift baseline, and determining sensitive nodes; s3, reconstructing a convergent path by replacing a distortion channel with a shadow link; s4, constructing a time stack and suppressing routing oscillation by a hysteresis gate; s5, generating a time-varying virtual impedance route according to the time stack to realize peak shifting stable forwarding; and S6, completing broken-loop control of residual crosstalk through inverse phase traction and the metasurface antenna, and finally enabling the network to maintain long-term stable operation. According to the method, stable convergence and closed-loop regulation and control of the ad hoc network are realized through interference feature extraction, path reconstruction, time stack hysteresis vibration suppression, virtual impedance peak shifting forwarding and inverse phase broken-loop interference control.

The invention discloses a wireless ad hoc network GIS deformation monitoring method, system and device, and relates to the technical field of GIS state monitoring. The method comprises the steps of obtaining basic information of a target wireless ad hoc network GIS to perform historical deformation data mining, performing monitoring point screening, and determining a target deformation monitoring point set; obtaining a monitoring array set, and performing communication connection to form a wireless sensing network; performing continuous multi-dimensional sensing monitoring on the target deformation monitoring point, determining a multi-dimensional sensing monitoring data sequence set, transmitting the multi-dimensional sensing monitoring data sequence set to a central processing unit through a wireless sensing network, and identifying an abnormal deformation monitoring point set and an abnormal degree set; and carrying out cooperative adjustment on the preset monitoring frequency of the monitoring array set, and carrying out deformation monitoring through the adjusted monitoring array set. The technical problem of insufficient deformation monitoring precision of GIS equipment in the prior art is solved, and the technical effect of improving the deformation monitoring precision is achieved.

The invention discloses an emergency communication system and method, and belongs to the field of emergency communication. The emergency communication method comprises the following steps of: acquiring a link performance parameter of a satellite communication link associated with an adjacent station node; based on the state information and the satellite communication link state of the local station node, executing at least one of the following scheduling operations on the service data: determining a first transmission performance index for transmitting data through the satellite communication link of the local station node, determining a first transmission performance index of a composite path from a wireless ad hoc network to the adjacent station node based on the state information, determining a second transmission performance index of a composite path from the wireless ad hoc network to the adjacent station node and transmitting data through a satellite communication link of the adjacent station node based on the state information, and selecting a forwarding path according to a comparison result of the first transmission performance index and the second transmission performance index; or, when the flow of the data to be transmitted meets the preset bandwidth aggregation condition, dividing the data to be transmitted into the first data part and the second data part.

The invention provides a safety three-level management and control system in a complex environment, and the system comprises a first-level wearable sensing unit which is worn by an operator and is used for collecting environment parameters and physiological parameters of the operator and generating corresponding safety monitoring data; the second-stage relay gateway unit is used for establishing two-way communication connection with the first-stage wearable sensing unit through a first wireless self-organizing network so as to receive and gather the safety monitoring data and relaying the gathered data to the outside through a second high-bandwidth self-organizing communication link; and the third-stage monitoring and distributing unit is used for receiving the safety monitoring data from the second-stage relay gateway unit and carrying out centralized monitoring and management on the operation state through a local network or a remote network. The method is suitable for operation real-time scenes in complex environments with serious metal shielding and limited signals, such as mines, factory closed spaces, steel structures, underground facilities and the like.

The invention discloses a wireless seismograph low-delay routing method based on directed topology perception and Bayesian optimization, and belongs to the field of wireless ad hoc network communication. According to the method, a topological position identifier TPI is introduced to represent a directed logic position of each node relative to a root node. According to MPR selection, TPI value differences, link quality and residual energy are comprehensively considered, and a multi-index weighting function is constructed to guide optimal MPR node selection. When generating the TC message, the MPR node only contains node information with the TPI value smaller than that of the node, the node only receives the TC message in the direction with the smaller TPI value and generates a topology table, and a directed acyclic multi-path routing set pointing to a root node is constructed. And carrying out routing selection by combining the hop count, the average TPI difference value, the link quality and the residual energy, and introducing a Bayesian optimization algorithm to adaptively adjust the weight by taking the transmission time delay as feedback. The method is suitable for the seismograph wireless ad hoc network with near-surface deployment, large link fluctuation, topology linearity and fixed target node as the root node, and effectively improves the real-time performance and survivability of network transmission.

The invention relates to the technical field of wind power Internet of Things communication, in particular to a wind power plant long-distance communication method and system based on a wireless ad hoc network, and the method comprises the steps: deploying a relay module with a wind driven generator as a node, and carrying out the self-adaptive networking based on geographic coordinates and signal intensity; electing a cluster head node to establish a tree-mesh hybrid topology; the source node sends a routing request, establishes a data transmission path, monitors performance and triggers retransmission; data are transmitted in a hierarchical manner, and low time delay of real-time data and high throughput of daily use are guaranteed; and preprocessing the cluster head, compressing the data, adding a security label and then forwarding. According to the method, signal interruption caused by blade shielding is solved, key instruction time delay is reduced through hierarchical routing and composite index evaluation, log transmission efficiency is improved through the multi-path fountain code technology, the service blocking problem is eradicated, energy consumption is reduced through the dormancy scheduling and compression algorithm, data safety is enhanced, the network lifetime is prolonged, and the total ownership cost of a communication system is reduced.

The present application relates to the technical field of data communication. Disclosed are a communication method, apparatus and device based on a wireless ad hoc network. The method comprises: collecting real-time network topology information of each candidate communication terminal; performing network center node screening on a target communication terminal and a plurality of communication terminals to obtain a target network center node and a plurality of network secondary center nodes, and determining a current center communication terminal corresponding to the target network center node and an initial communication terminal corresponding to each network secondary center node; generating a center list, generating a forwarding sequence list on the basis of the center list, generating a data slot allocation table on the basis of data slot reservation information, and sending or forwarding the center list, the forwarding sequence list and the data slot allocation table in a target radio frequency channel; and sending a management control instruction in the target radio frequency channel, and controlling all initial communication terminals in a group network to execute the management control instruction. The present application improves both the efficiency and accuracy of communication based on a wireless ad hoc network.

The invention belongs to the field of unmanned aerial vehicle cluster scheduling and wireless self-organizing networks, and relates to a multi-unmanned aerial vehicle forest fire extinguishing cooperative scheduling system based on a Mesh network, which comprises a ground control station responsible for strategy generation, task distribution coordination and remote scheduling control; a plurality of unmanned aerial vehicles equipped with communication and sensing modules form a honeycomb Mesh network to realize detection, relaying and fire extinguishing; the air Mesh communication network is dynamically constructed, comprises a backbone layer and an access layer, and supports distributed control and collaborative operation; the data sensing and sensing system is used for fusing information such as images, temperature and infrared rays to carry out fire behavior identification; and the task scheduling and energy management module supports task division, path planning and endurance guarantee. According to the system, an integrated closed-loop process of sensing, communication, scheduling and fire extinguishing is realized, and the response speed of forest fire extinguishing, the resource scheduling efficiency and the fire extinguishing accuracy are improved.

The invention relates to the technical field of communication, and provides an intelligent networking method and system for a wireless ad hoc network, and the method comprises the steps: firstly collecting the position, signal strength, bandwidth load and other state information of each ad hoc network node, and then transmitting the state information to a distributed edge calculation module through a wireless module; the method comprises the following steps: establishing a network topological graph reflecting link signal attenuation and packet loss rate, transmitting ad-hoc network node state information and the network topological graph to a cloud computing platform for comprehensive analysis to generate a current optimal transmission path, networking based on the current optimal transmission path, and finally continuously monitoring the moving state of the ad-hoc network node and updating the information of the ad-hoc network node. And repeating the steps to dynamically optimize the networking strategy. Therefore, the transmission efficiency and the stability of the wireless ad hoc network can be effectively improved.

The invention relates to the technical field of wireless networking, in particular to a shipborne digital wireless ad hoc network method and system, and the method comprises the following steps: obtaining ship communication equipment information, constructing a layered mark matrix, generating a node role identifier set, monitoring response time delay, judging a connection relation, and establishing a communication topology. And optimizing spectrum allocation according to an interference ratio and an overlapping coefficient, completing channel matching and path completion, executing AES encryption and encapsulation of data frames, and decrypting and verifying time delay record effective data frames by a receiving end according to a key index. According to the invention, through combination of hierarchical marks established by node equipment information and communication roles, the accuracy of inter-node connection priority and hierarchical mapping is improved, through dual detection of the interference ratio and the spectrum overlapping coefficient of the channel, the stability of a communication path and the channel utilization rate are improved, and the communication efficiency is improved. In a node link matching process, path breakpoints are complemented to guarantee network integrity, a security header field is embedded in combination with a key index and a channel number, and the security guarantee level of data encryption transmission is improved.

The invention relates to the field of signal loop control, particularly discloses a medium-voltage switch cabinet intelligent signal loop system and method based on a wireless ad hoc network, and constructs a collaborative diagnosis system composed of intelligent sensing nodes, an edge computing gateway and the wireless ad hoc network. The intelligent sensing node immediately captures and encapsulates state data containing a high-precision local timestamp at the moment that the state of the circuit breaker changes. After the data is transmitted to the edge computing gateway through the wireless ad hoc network in a multi-hop mode, the gateway carries out deep analysis on the received data packet through a special time sequence analysis algorithm, and therefore inherent mechanical operation time delay and variable wireless network transmission time delay can be effectively separated out. Therefore, the technical problem of unreliable diagnosis result caused by confusion of network delay jitter and mechanical delay is solved, and accurate judgment of the equipment state is realized.

The invention provides a wireless ad hoc network time synchronization method, device and system and communication equipment, and relates to the technical field of communication. The wireless ad hoc network time synchronization method comprises the following steps: generating a reference clock signal based on a GNSS (Global Navigation Satellite System) signal of a global navigation satellite system; generating a local clock signal synchronized with the reference clock signal; determining a sending window of the wireless frame according to preset sending time slot configuration; wherein the starting moment of the sending window is set to be deviated from a specified edge of the reference clock signal by a preset time delay; generating and sending the wireless frame in the sending window; wherein the wireless frame at least comprises equipment identification information and time synchronization identification information, and the initial sending time of the wireless frame is consistent with the initial time of the sending window.

This application provides a routing communication method and apparatus. In this method, after a node in a wireless ad hoc network determines the next-hop MPR node based on the destination node of the data packet and the OLSR protocol, it also determines the target acceleration node of that next-hop MPR node. Since the minimum of the link rate between the node and the target acceleration node and the link rate from the target acceleration node to the next-hop MPR node is greater than twice the link rate from the node to the next-hop MPR node, forwarding the data packet through the target acceleration node to the next-hop MPR node can effectively improve the data transmission rate of the routing path. Furthermore, the link rate is determined based on the MCS level between nodes, and the MCS level between nodes is obtained through MCS signaling transmitted within the wireless ad hoc network. This eliminates the need to separately send control signaling for transmitting link QoS information, thereby reducing the overhead of transmitting control signaling within the wireless ad hoc network.

The invention discloses a transmission access method of a directional ad hoc network, relates to the field of wireless ad hoc networks, and is used for improving the total network throughput of the directional ad hoc network. The method comprises the following steps: planning multi-time-slot network operation parameters including time slot parameters, frequency parameters and spatial multiplexing parameters; s2, respectively loading the network operation parameters to each communication node; s3, starting each communication node to construct a time-synchronized self-organizing network, and regularly exchanging spatial position information among the communication nodes; and S4, under the management of a unified time slot timer, each communication node performs transmission access in time slots one by one according to the loaded network operation parameters. According to the invention, the network transmission efficiency of the directional ad hoc network can be improved, and the transmission delay is reduced.

This invention discloses a communication method and system for anti-interference wireless ad hoc networks, relating to the field of wireless networking technology. The method includes: a master node collecting historical interference feature sequences transmitted by each slave node (not part of the ad hoc network) and predicting predicted interference frequency band sequences that may affect each node within a preset future time range; analyzing and quantifying the interference confidence of each predicted interference frequency band sequence by combining historical transmission interaction data between nodes; using the interference confidence as weight, jointly and dynamically allocating transmission time slot frequency bands of the ad hoc network within the preset future time range using an iterative optimization algorithm to generate multiple optimized time slot frequency band sequences capable of actively avoiding high-confidence predicted interference; and precisely controlling the communication behavior of each node within the future time period based on the multiple optimized time slot frequency band sequences. This invention transforms traditional passive interference response into active prediction and avoidance, improving the communication reliability and overall performance of wireless ad hoc networks in complex interference environments.

The invention provides a wireless ad hoc network indoor and outdoor fusion positioning method and system, a medium and a product, and relates to the technical field of wireless communication positioning, and the method comprises the steps: carrying out the communication connection with other anchor nodes detected in a first preset communication range, and generating an anchor node communication network; when the first inquiry signal is received, determining a first distance with at least one node to be positioned by using a bidirectional time-of-flight method, and generating a first mark number; broadcasting a first distance and a first label to other anchor nodes by using the communication network, and receiving a second distance and a second label broadcasted by other anchor nodes; performing matching detection on the first mark number and the received second mark number so as to determine at least N anchor nodes as a positioning anchor node group when at least N same mark numbers are detected; and determining the actual position of at least one node to be positioned according to the determined geometric center position of the positioning anchor node group, the first distance and the second distance. The problem that indoor and outdoor cooperative positioning performance of the wireless ad hoc network is poor is solved.

The invention relates to an AODV routing protocol method, in particular to an AODV routing protocol method based on joint optimization of a three-dimensional weight hop count penalty mechanism. The invention aims to solve the problem that a single path selection standard neglects node residual energy, link quality and topology stability. The method comprises the following steps: based on position weight calculation of inter-node distance dynamic attenuation, suppressing a long-distance low-quality link; an energy weight is constructed by multiplying the ratio of the residual energy and the initial energy, and network load balancing is optimized; a movement weight in a speed difference square root reciprocal form is introduced, and a link life cycle is predicted; and a hop number punishment mechanism is newly added, so that nonlinear adjustment of multi-hop path quality is realized. And intelligent optimization of comprehensive score of the path is realized by combining a request message RREQ of an improved AODV routing protocol through normalization constraint and a hop punishment mechanism of a three-dimensional coefficient. The invention belongs to the technical field of wireless ad hoc networks.

This invention discloses an anti-interference method for wireless ad hoc networks, comprising the following steps: The receiving node performs frequency domain measurements on the current operating bandwidth to generate an interference characterization value sequence; a candidate boundary gating set is constructed, and a candidate segment boundary set is obtained based on the candidate boundary gating set; a joint segmentation cost is constructed, and PELT change point detection is performed using the joint segmentation cost and segmentation penalty intensity to generate a continuous frequency band set; a frequency band state set is generated based on the segmentation characteristics of each continuous frequency band in the continuous frequency band set; a mirror-locked frequency band object is generated, and the mirror-locked frequency band object is synchronized to the transmitting node to generate a frequency band control object; segment-level state maintenance and reservation release collaborative control are performed on the continuous frequency band set to generate an updated frequency band control object; anti-interference transmission control is performed to generate anti-interference transmission results. This invention improves the stability of anti-interference control in wireless ad hoc networks under complex frequency domain environments.

The invention provides a network control method, device, equipment, medium and product, which are applied to the technical field of wireless ad hoc networks, and the method comprises the following steps: determining a current mobile node and a leadership index of a neighbor node of the current mobile node by obtaining a neighbor table and based on the neighbor table; carrying out leader node election according to the leader indexes of the current mobile node and the neighbor nodes of the current mobile node so as to determine the identity of the current mobile node; and under the condition that the current mobile node is the leader node, sending a guiding instruction to a following node in the current subnet corresponding to the leader node so as to guide the following node in the current subnet. According to the method, the leadership index is calculated according to the neighbor table, the leader node election is performed, and the guide instruction is sent to the following node in the subnet through the leader node, so that the distributed adaptive topology management of the wireless ad hoc network in the high dynamic environment is realized, and the risk of single node failure is avoided.

The application discloses a configuration updating method of a wireless self-organizing network, and relates to the technical field of wireless self-organizing networks, and comprises the following steps: S1, the wireless self-organizing network receives an external configuration command, and divides nodes into master nodes and slave nodes; S2, the master node updates first configuration information data according to the external configuration command, and sends the first configuration information data to the slave nodes; S3, the slave nodes update second configuration information data; S4, after the master node confirms that all the slave nodes have updated the second configuration information data, the value of a first update flag in the first configuration information data is updated, and the first configuration information data is sent to the slave nodes; S5, after the slave nodes update the value of a second update flag in the second configuration information data, the configuration of the slave nodes is updated; and S6, after the master node confirms that all the slave nodes have updated the configuration, the configuration of the master node is updated. In this way, unnecessary network overhead is reduced, and the efficiency and performance of configuration information data transmission are improved.

The invention relates to the technical field of wireless ad hoc networks, in particular to a wireless ad hoc network broadcast power control method, which comprises the following steps that: after each node is started, each node broadcasts a signal to other nodes by taking a preset maximum power as a transmitting power, and the signal broadcasted by the ith node comprises the transmitting power of the ith node; when the node receives signals of other nodes, the node analyzes the received signals and then calculates the expected output power of the node at the current moment; and when the node broadcasts, determining the expected output power of the node at the current moment as the transmitting power of a node broadcast signal. According to the invention, the problem that other nodes cannot correctly analyze the broadcast signal of a certain node due to the fact that the transmitting power of the broadcast signal of the node in a cluster scene of ad hoc network nodes is relatively high is solved.

The application provides a pilot pattern design method and device for a wireless ad hoc network, a terminal and a medium. The method comprises the following steps: S100, a second communication node generates a pilot pattern switching request signal according to channel quality information of a communication link, and sends the pilot pattern switching request signal to a first communication node; S200, after receiving the pilot pattern switching request signal, the first communication node sends a request acknowledgement response signal to the second communication node, and maps a new pilot pattern based on the request acknowledgement response signal, wherein a time domain position of the new pilot pattern remains unchanged, and a frequency domain starting offset is calculated through a control word in the request acknowledgement response signal. The application provides a plurality of variable pilot patterns for different channel environments of the wireless ad hoc network, and realizes dynamic switching through a two-way negotiation mechanism between a sending end and a receiving end, thereby significantly improving the adaptability of the wireless ad hoc network system.