Hybrid ad hoc network and safe and efficient communication method in large-scale wireless sensor network

Abstract

The invention relates to a hybrid ad hoc network and a safe and efficient communication method in a large-scale wireless sensor network. The method comprises the steps that a network topology construction module is used for designing a heterogeneous communication protocol with high adaptability based on the distribution condition of large-scale sensor nodes, and seamless cooperative work of multiple communication technologies is ensured; the ad-hoc network optimization module adopts a dynamic ad-hoc mechanism to realize autonomous discovery and network connection between nodes and improve the expansibility and flexibility of the network; the safety communication module is combined with an advanced encryption algorithm and an authentication mechanism to ensure the safety and the reliability in a data transmission process; and the efficient communication protocol module improves the data transmission efficiency and the overall performance of the network through the technical means of signal transmission optimization, interference management and the like. Through cooperative work of the modules, efficient, safe and reliable heterogeneous wireless communication can be realized in the large-scale wireless sensor network, and the requirements of the large-scale wireless sensor network in practical application are met.

Description

Technical Field

[0001] The present invention relates to the technical field of communication in wireless sensor networks (WSN), and particularly to a hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network. Background Art

[0002] Traditional communication methods for large-scale wireless sensor networks (WSN) often face problems such as dynamic changes in network topology, poor adaptability of communication protocols, overloaded network load, and low data transmission efficiency, which limit their effectiveness in practical applications. This patent proposes a hybrid self-organizing network and secure and efficient communication method for heterogeneous wireless communication in large-scale wireless sensor networks. By integrating heterogeneous communication technologies and hybrid self-organizing network strategies, combined with dynamic network topology adjustment, intelligent data transmission scheduling, and multi-level security mechanisms, it can effectively cope with network environment changes, improve communication efficiency, ensure data security, and optimize network performance. This method can enhance the reliability and flexibility of the network while ensuring efficient communication, and meet the actual application requirements of large-scale sensor networks. Summary of the Invention

[0003] According to the above-mentioned technical problems, the present invention proposes a hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network, which is used to solve the problems existing in the existing wireless sensor networks in terms of large-scale networking, communication efficiency, security, etc.

[0004] The technical solution adopted by the present invention to achieve the above object is as follows:

[0005] The hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network includes the following steps:

[0006] The network topology construction module obtains node data in the large-scale sensor network and conducts preliminary connections between nodes through wireless communication technology to construct a topological structure;

[0007] The self-organizing network optimization module adjusts the network structure based on the network topology and node status through a self-organizing network optimization mechanism;

[0008] The secure communication module encrypts and authenticates data through encryption and authentication mechanisms;

[0009] The efficient communication protocol module optimizes the data communication protocol.

[0010] The network topology construction module performs the following steps:

[0011] The topology discovery module dynamically discovers the connection relationships of sensor nodes and identifies the communication paths between nodes through broadcasting or other protocols;

[0012] The node location estimation module estimates the location of each sensor node based on geographical information or positioning technology;

[0013] Path optimization module: Comprehensively selects the optimal communication path according to multiple factors to maximize data transmission efficiency and plan for fault tolerance of redundant paths;

[0014] The network structure adjustment module adjusts the network topology in real time according to the joining, offline or failure of nodes.

[0015] The path optimization module adopts a multi-factor weighted algorithm or a graph search algorithm to dynamically evaluate the path cost function according to the physical distance between nodes, link quality, current network load, data priority and real-time requirements, and selects a set of paths that meet the thresholds for overall communication delay, load balancing, and interference as the optimal communication path.

[0016] The ad-hoc network optimization module performs the following steps:

[0017] The node self-organization module controls the sensor nodes to automatically discover and connect to neighboring nodes without external control;

[0018] The network fault detection module continuously monitors the network operating status and triggers a fault recovery mechanism when a fault is detected;

[0019] When a node drops offline or a network fault occurs, the adaptive reconnection module automatically selects a new path to connect the nodes;

[0020] When network expansion is required, the network expansion module seamlessly integrates new sensor nodes.

[0021] The network fault detection module realizes fast detection of node disconnection, communication link interruption, and abnormal delay through periodic heartbeat packets, link quality analysis or ACK feedback mechanism. When an abnormality is found, it immediately triggers a reconstruction or alarm process, and at the same time records logs for subsequent diagnosis. When reconstruction needs to be triggered, it automatically evaluates alternative paths and initiates a communication reconstruction task based on the set of optimal communication paths selected by the path optimization module.

[0022] The secure communication module performs the following steps:

[0023] The encryption algorithm module encrypts the data using symmetric encryption or asymmetric encryption;

[0024] The authentication module authenticates each sensor node to ensure that only authorized nodes can access the network;

[0025] The data integrity verification module verifies the integrity of the data using digital signatures or hash algorithms;

[0026] The anti - attack mechanism module prevents various types of network attacks through key management and session control technologies.

[0027] The efficient communication protocol module performs the following steps:

[0028] The signal transmission optimization module optimizes the intensity and frequency of the transmitted signal according to the network environment;

[0029] The data compression module compresses the data before transmission to reduce bandwidth occupancy and improve data transmission efficiency;

[0030] The transmission scheduling module intelligently adjusts the data sending time according to the network condition and node load to avoid data conflicts and network congestion;

[0031] The conflict avoidance and collision detection module uses time - division multiplexing or frequency - division multiplexing to avoid conflicts generated when multiple nodes send data simultaneously;

[0032] The transmission rate control module intelligently adjusts the transmission rate according to the network bandwidth and node power consumption requirements.

[0033] A hybrid ad - hoc and secure and efficient communication system in a large - scale wireless sensor network, including:

[0034] The network topology construction module is used to obtain node data in a large - scale sensor network and perform preliminary connections between nodes through wireless communication technology to construct a topology structure;

[0035] The ad - hoc network optimization module is used to adjust the network structure through an ad - hoc network optimization mechanism based on the network topology and node status;

[0036] The secure communication module is used to encrypt and authenticate data through encryption and authentication mechanisms;

[0037] The efficient communication protocol module is used to optimize the data communication protocol.

[0038] The present invention has the following beneficial effects and advantages:

[0039] 1. Improve network communication efficiency: The present invention greatly improves the communication efficiency of the sensor network and reduces the risk of network congestion by optimizing the wireless communication protocol, path selection, and data scheduling.

[0040] 2. Enhance network security: Through encryption algorithms, authentication, and anti - attack mechanisms, the present invention ensures the security of data during transmission, prevents untrusted nodes from accessing the network, and effectively resists external attacks.

[0041] 3. Improve the robustness and flexibility of the network: The self-organizing network optimization module of the present invention ensures that the network can quickly self-recover when nodes fail or drop out, guarantees the stable operation of the network, and adapts to large-scale and dynamically changing environments.

[0042] 4. Reduce the computational complexity and energy consumption: Through precise communication protocols and efficient data transmission methods, the present invention reduces the energy consumption of data transmission and improves the overall efficiency of the system, meeting the actual needs of large-scale sensor networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is the overall flowchart constructed for the hybrid self-organizing network and secure and efficient communication method in the large-scale wireless sensor network of the present invention;

[0044] Figure 2 It is the overall network structure diagram of the hybrid self-organizing network and secure and efficient communication method in the large-scale wireless sensor network of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0045] The following further describes the present invention in detail with reference to the drawings and embodiments.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0047] A hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network includes the following steps:

[0048] Obtain node data in the large-scale sensor network and perform preliminary connection between nodes through wireless communication technology;

[0049] Based on the node distribution and communication requirements, construct a heterogeneous wireless communication protocol, including seamless cooperation of multiple communication technologies;

[0050] Based on the network topology and node status, adjust the network structure through a self-organizing network optimization mechanism to ensure the reliability and flexibility of the network;

[0051] Adopt a secure communication mechanism to encrypt and authenticate data to ensure the secure transmission of data;

[0052] Improve the data transmission efficiency and stability of the network by optimizing the communication protocol.

[0053] The heterogeneous wireless communication protocol includes at least two or more wireless communication technologies, and the wireless communication technology is at least one of Wi-Fi, Bluetooth, and ZigBee.

[0054] A hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network, comprising the following steps:

[0055] Network topology construction module: Through this module, automatic topology discovery and optimization of the large-scale sensor network are realized, ensuring that each sensor node can automatically select an appropriate connection method according to the network requirements, avoiding network conflicts and interference. This module can dynamically adjust the network topology structure to ensure the efficient and stable operation of the network.

[0056] Self-organizing network optimization module: This module realizes the self-adaptive reorganization of the network. When some sensor nodes fail or drop out, the system will automatically detect the fault and reorganize the network to ensure the reliability and stability of the communication link.

[0057] Secure communication module: Through this module, the security of data in network transmission is ensured. Encryption technology is used to encrypt the data to prevent the data from being stolen or tampered with during transmission. At the same time, the module will verify the identity of the nodes to ensure that only authorized devices can access the network and prevent external attacks.

[0058] Efficient communication protocol module: This module optimizes the network communication protocol to avoid communication delays caused by network congestion and node overload. By intelligently adjusting the data transmission timing, data compression, and signal transmission optimization, the efficiency and stability of data transmission are improved.

[0059] Detailed description of each module:

[0060] Network topology construction module: This module includes a topology discovery module, a node position estimation module, a path optimization module, and a network structure adjustment module. Through intelligent algorithms, the sensor nodes are dynamically arranged, the communication paths are optimized, and the network coverage efficiency and transmission stability are improved.

[0061] Self-organizing network optimization module: Includes a node self-organization module, a network fault detection module, an adaptive reconnection module, and a network expansion module. Ensure that sensor nodes can self-organize the network and self-repair when a fault occurs, improving the reliability and fault tolerance of the network.

[0062] Secure communication module: Includes an encryption algorithm module, an identity authentication module, a data integrity verification module, and an anti-attack mechanism module. This module ensures information security during data transmission and the legitimacy verification of nodes, avoiding external attacks on the network.

[0063] Efficient communication protocol module: Includes a signal transmission optimization module, a data compression module, a transmission scheduling module, a conflict avoidance and collision detection module, and a transmission rate control module. Through precise protocol design and transmission scheduling, data conflicts are avoided, transmission efficiency is ensured, and network latency is reduced.

[0064] Through the above technical means, the present invention provides an efficient, secure and flexible large-scale wireless sensor network solution, which can effectively address various challenges in the process of large-scale networking and meet the performance requirements in practical applications.

[0065] Embodiment

[0066] As Figure 1 And Figure 2 As shown, the present invention relates to a method for hybrid self-organizing networking and secure and efficient communication in a large-scale wireless sensor network, which mainly includes the following four modules: a network topology construction module, a self-organizing network optimization module, a secure communication module, and an efficient communication protocol module.

[0067] The network topology construction module is used to construct and optimize the topology structure of a large-scale sensor network to ensure that each sensor node can communicate efficiently with other nodes. In this module, first, topology discovery is performed to identify the connection relationship between each node and other nodes, and then the communication path is dynamically optimized according to the distribution of network nodes to avoid network interference and transmission bottlenecks.

[0068] Topology discovery module: Dynamically discover the connection relationship of sensor nodes and identify the communication path between nodes through broadcasting or other protocols.

[0069] Node position estimation module: Estimate the position of each sensor node based on geographic information or positioning technology to help construct a reasonable network topology.

[0070] Path optimization module: This module comprehensively selects the optimal communication path according to multiple factors, including the physical distance between nodes, link quality (such as RSSI, link loss), current network load, data priority, and real-time requirements, etc. The optimization process uses a multi-factor weighted algorithm or graph search algorithms (Dijkstra, AODV, Ant Colony Optimization, etc.) to dynamically evaluate the path cost function, select a set of paths with low overall communication delay, good load balancing, and small interference, and achieve the maximization of data transmission efficiency and the fault tolerance planning of redundant paths.

[0071] Network structure adjustment module: Adjust the network topology in real time according to the joining, offline or failure of nodes to ensure the stability and reliability of the network.

[0072] The self-organizing network optimization module can ensure that when a sensor node fails or drops offline, the system can automatically reconnect to restore network communication. This module provides automatic detection and repair functions, can reconstruct the failed communication link in real time, and improve the fault tolerance and flexibility of the network.

[0073] Node Self-Organization Module: Sensor nodes can automatically discover and connect to neighboring nodes without external control to achieve self-organized networking.

[0074] Network Fault Detection Module: Continuously monitor the network operating status. Through periodic heartbeat packets, link quality analysis, or ACK feedback mechanisms, quickly detect faults such as node disconnection, communication link interruption, and abnormal latency. Once an anomaly is detected, immediately trigger the reconstruction or alarm process, and record logs for subsequent diagnosis. The module supports linkage with the path optimization module to automatically evaluate alternative paths and initiate communication reconstruction tasks after a fault occurs.

[0075] Adaptive Reconnection Module: When a node disconnects or a network fault occurs, automatically select a new path to connect to the node to ensure that data transmission is not affected.

[0076] Network Expansion Module: Support network expansion, and be able to seamlessly integrate new sensor nodes to maintain network stability and reliability.

[0077] Secure Communication Module: Since the data transmitted in the sensor network may contain sensitive information, it is crucial to ensure data security. This module ensures that the data during the communication process cannot be intercepted, tampered with, or forged through encryption and authentication mechanisms.

[0078] Encryption Algorithm Module: Use symmetric encryption (such as AES) or asymmetric encryption (such as RSA) to encrypt data to ensure that the data is not stolen during transmission.

[0079] Authentication Module: Each sensor node needs to be authenticated to ensure that only authorized nodes can access the network.

[0080] Data Integrity Verification Module: Use digital signatures or hash algorithms to ensure that the transmitted data has not been tampered with.

[0081] Anti-Attack Mechanism Module: Prevent various types of network attacks (such as man-in-the-middle attacks, replay attacks, etc.), and enhance system security through technologies such as key management and session control.

[0082] Efficient Communication Protocol Module: This module is used to optimize the data transmission protocol, reduce network congestion, and improve communication efficiency. Through methods such as signal optimization, data compression, and intelligent scheduling, reduce transmission latency and improve data transmission quality.

[0083] Signal Transmission Optimization Module: Optimize the intensity and frequency of the transmission signal according to the network environment, reduce interference, and improve transmission quality.

[0084] Data Compression Module: Compress the data before transmission to reduce bandwidth occupancy and improve data transmission efficiency.

[0085] Transmission Scheduling Module: According to the network conditions and node loads, it intelligently adjusts the data sending time to avoid data conflicts and network congestion.

[0086] Collision Avoidance and Detection Module: Using technologies such as Time Division Multiple Access (TDMA) and Frequency Division Multiple Access (FDMA), it avoids conflicts generated when multiple nodes send data simultaneously.

[0087] Transmission Rate Control Module: According to the network bandwidth and node power consumption requirements, it intelligently adjusts the transmission rate to optimize the utilization of network resources.

[0088] Through the specific implementation manners of the present invention, the communication efficiency, security and stability of large-scale wireless sensor networks can be significantly improved, energy consumption can be reduced and the use of network resources can be optimized. Through the automated self-organizing network and dynamic optimization mechanism, the present invention provides an efficient solution applicable to large-scale sensor networks, with strong practicability and scalability.

[0089] The above are the preferred implementation manners of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle described in the present invention, several improvements and refinements can still be made, and these improvements and refinements should be regarded as the protection scope of the present invention.

Claims

1. Hybrid self-organizing network and secure and efficient communication method in large-scale wireless sensor networks, characterized in that, It includes the following steps: The network topology construction module obtains the node data in the large-scale sensor network and conducts preliminary connections between nodes through wireless communication technology to construct the topology structure; The ad-hoc network optimization module adjusts the network structure through the ad-hoc network optimization mechanism based on the network topology and node status; The secure communication module encrypts and authenticates the data through encryption and authentication mechanisms; The efficient communication protocol module optimizes the data communication protocol.

2. The hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network according to claim 1, characterized in that, The network topology construction module executes the following steps: The topology discovery module dynamically discovers the connection relationships of sensor nodes and identifies the communication paths between nodes through broadcasting or other protocols; The node location estimation module estimates the location of each sensor node based on geographic information or positioning technology; The path optimization module: comprehensively selects the optimal communication path according to multiple factors to maximize the data transmission efficiency and perform fault tolerance planning for redundant paths; The network structure adjustment module adjusts the network topology in real time according to the joining, offline or failure of nodes.

3. The hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network according to claim 2, wherein, The path optimization module adopts a multi-factor weighted algorithm or a graph search algorithm to dynamically evaluate the path cost function according to the physical distance, link quality, current network load, data priority and real-time requirements between nodes, and selects the path set that satisfies the thresholds of overall communication delay, load balance and interference as the optimal communication path.

4. The hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network according to claim 1, wherein, The ad-hoc network optimization module executes the following steps: The node self-organization module controls the sensor nodes to automatically discover and connect to neighboring nodes without external control; The network fault detection module continuously monitors the network operation status and triggers the fault recovery mechanism when a fault is detected; When a node drops offline or a network fault occurs, the adaptive reconnection module automatically selects a new path to connect the nodes; When network expansion is required, the network expansion module seamlessly integrates new sensor nodes.

5. The method for hybrid self-organizing network and secure and efficient communication in a large-scale wireless sensor network according to claim 4, wherein The network fault detection module realizes the rapid detection of node dropout, communication link interruption and abnormal delay through periodic heartbeat packets, link quality analysis or ACK feedback mechanism. When an anomaly is found, it immediately triggers the reconstruction or alarm process, and at the same time records the log for subsequent diagnosis. When reconstruction needs to be triggered, it automatically evaluates alternative paths and initiates the communication reconstruction task based on the optimal communication path set selected by the path optimization module.

6. The hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network according to claim 1, wherein, The secure communication module executes the following steps: The encryption algorithm module encrypts the data using symmetric encryption or asymmetric encryption; The authentication module authenticates each sensor node to ensure that only authorized nodes can access the network; The data integrity verification module verifies the integrity of the data using digital signatures or hash algorithms; the anti-attack mechanism module prevents various types of network attacks through key management and session control technologies.

7. The hybrid self-organizing network and secure and efficient communication method in a large-scale wireless sensor network according to claim 1, characterized in that The efficient communication protocol module executes the following steps: The signal transmission optimization module optimizes the intensity and frequency of the transmitted signal according to the network environment; The data compression module compresses the data before transmission to reduce the bandwidth occupancy and improve the data transmission efficiency; The transmission scheduling module intelligently adjusts the sending time of the data according to the network conditions and node load to avoid data conflicts and network congestion; The collision avoidance and detection module uses time-division multiplexing or frequency-division multiplexing to avoid collisions generated when multiple nodes send data simultaneously; The transmission rate control module intelligently adjusts the transmission rate according to the network bandwidth and node power consumption requirements.

8. Hybrid Ad Hoc Network and Secure and Efficient Communication System in Large-Scale Wireless Sensor Networks, characterized in that, It includes: The network topology construction module is used to obtain node data in a large-scale sensor network and perform preliminary connections between nodes through wireless communication technology to construct a topology structure; The self-organizing network optimization module is used to adjust the network structure through a self-organizing network optimization mechanism based on the network topology and node status; The secure communication module is used to encrypt data and authenticate identities through encryption and authentication mechanisms; The efficient communication protocol module is used to optimize the data communication protocol.

Images