Waveform parameter configuration management and control method, network management method, storage medium and electronic device

Abstract

The present application relates to the technical field of wireless network waveform configuration. The present application provides a waveform parameter configuration management method, a network management method, a storage medium and an electronic device. The waveform parameter configuration management method for a network access master device comprises: storing a shared waveform library; receiving a waveform signal sent by a certain network slave device and determining whether there is an optimal matching waveform configuration; if there is, using the optimal matching waveform configuration to analyze the waveform configuration corresponding to the waveform signal; determining whether the actually analyzed waveform configuration is consistent with the optimal matching waveform configuration; if consistent, determining whether the protocol type of the certain network slave device exists in the list of allowed message receiving protocol types of the network access master device; if exists, using the same waveform configuration as the certain network slave device to realize message interaction with the certain network slave device. The present application improves the network communication security and enables the wireless network to have the ability to flexibly receive signals.

Description

Technical Field

[0001] This invention relates to the technical field of wireless network waveform configuration, and more specifically, to a waveform parameter configuration and control method, a network management method, a storage medium, and an electronic device. Background Technology

[0002] The existing wireless network waveform configuration technology has the following defects: (1) The waveform configuration is rigid and lacks flexibility and compatibility. In traditional networks, the access master device usually only supports one or a few fixed waveform configurations, which makes it impossible to be compatible with slave devices using different waveforms, thus limiting the access flexibility and device compatibility of the network; (2) At the same time, the access master device often unconditionally receives packets of all protocols, resulting in low packet reception efficiency and vulnerability to malicious attacks; (3) In addition, the physical layer waveform is usually fixed, and there is no difference in physical signal characteristics between high-security level communication and ordinary communication, which makes it easy for attackers to detect, identify and launch attacks against the physical layer.

[0003] Mobile devices update waveform configurations infrequently, making it difficult to meet the dynamic demands of high-security scenarios. Therefore, a method is needed that can dynamically configure waveform parameters and adaptively adjust them based on security levels to improve network performance and network security. Summary of the Invention

[0004] The present invention aims to solve the problems of insufficient flexibility and poor security of wireless waveforms in the prior art.

[0005] Therefore, in view of the shortcomings of the existing technology, the first objective of the present invention is a waveform parameter configuration and control method for network access master equipment.

[0006] A second objective of this invention is to provide a waveform parameter configuration and control method for at least one network slave device.

[0007] A third objective of this invention is to provide a network management method.

[0008] A fourth objective of this invention is to provide a computer-readable storage medium.

[0009] The fifth objective of this invention is to provide an electronic device.

[0010] To achieve the above objectives, the first aspect of the present invention provides a waveform parameter configuration control method for a network access master device. The network access master device communicates with at least one network slave device. The control method includes: Step S11: Pre-storing a shared waveform library constructed in a wireless network; wherein the shared waveform library stores N waveform configurations; each waveform configuration consists of a corresponding waveform configuration index and a set of corresponding waveform parameters; the waveform parameters include a preamble; N is a positive integer; Step S12: Receiving a waveform signal sent by a network slave device over the air interface, and determining whether the waveform signal has an optimal matching waveform configuration in the shared waveform library; if the determination result is yes, proceeding to step S13; if the determination result is no, proceeding to step S17; Step S13... S13: Use the best matching waveform configuration to parse the waveform configuration corresponding to the waveform signal; Step S14: Determine whether the actual parsed waveform configuration is consistent with the best matching waveform configuration; If the determination result is yes, execute step S15; If the determination result is no, execute step S17; Step S15: Determine whether the protocol type used by the network slave device exists in the list of allowed message receiving protocol types of the network access master device; If the determination result is yes, execute step S16; If the determination result is no, execute step S17; Step S16: Use the same waveform configuration as the network slave device to implement message interaction with the network slave device; Step S17: Determine the received waveform signal as an unrecognizable signal and discard the received waveform signal directly.

[0011] Preferably, step S12 specifically includes: Step S121: Receiving a waveform signal sent by a network slave device over the air interface, and performing sliding correlation calculation on the preamble of the waveform signal with the preamble of each waveform configuration in the shared waveform library to output N correlation value sequences; Step S122: For each waveform configuration, finding the peak value P_i of each correlation value sequence; i=1,2,…,N; Step S123: Comparing the peak value P_i of each correlation value sequence with a preset dynamic threshold Thresh; if there are one or more P_i>Thresh, it indicates that the waveform signal has an optimal matching waveform configuration in the shared waveform library, and step S124 is executed; otherwise, it indicates that the waveform signal does not have an optimal matching waveform configuration in the shared waveform library, and step S17 is executed; Step S124: Selecting the largest peak value P_max from all peak values ​​exceeding the preset dynamic threshold Thresh, and determining the waveform configuration Waveform_Config_k corresponding to the peak value P_max as the optimal matching waveform configuration.

[0012] Preferably, the preset dynamic threshold Thresh is dynamically adjusted according to the noise level of the current channel of the wireless network.

[0013] Preferably, step S14 specifically involves: determining whether the actual parsed waveform configuration index is consistent with Waveform_Config_k.

[0014] The second aspect of the present invention also provides a waveform parameter configuration control method for at least one network slave device, which communicates with a network access master device. The control method includes: step S21: pre-storing a shared waveform library constructed in the wireless network; wherein the shared waveform library stores N waveform configurations; each waveform configuration consists of a corresponding waveform configuration index and a set of corresponding waveform parameters; the waveform parameters include a preamble; N is a positive integer; step S22: any network slave device selects a corresponding waveform configuration from the shared waveform library according to the current security level to generate a corresponding waveform signal, and then sends the corresponding waveform signal to the network access master device through the air interface, so that the network access master device can receive the waveform signal sent by any network slave device on the air interface.

[0015] Preferably, in step S22, any network slave device selects a corresponding waveform configuration from the shared waveform library based on the current security level and the read security level policy table; wherein, the security level policy table defines the mapping relationship between the security level of any network slave device and the waveform configuration parameters.

[0016] The third aspect of the present invention also provides a network management method. This network management method includes: a waveform parameter configuration and control method for a network access master device as described in any of the above technical solutions; a waveform parameter configuration and control method for at least one network slave device as described in any of the above technical solutions; the network management method further includes: step S31: after a network slave device communicates with a network access master device using the same waveform configuration, real-time detection is performed to check whether there are potential sniffing or interference attacks in the wireless network area where the communication takes place; when the determination result is yes, step S32 is executed; step S32: an encrypted security level upgrade instruction is sent to the network slave device to upgrade the current security level levelj of the network slave device to level(j+1); wherein the security levels include: level1, level2, ..., level(j+1); j = 1, 2, ..., M; M is a positive integer; step S33: the network slave device queries level(j+1) according to the security level policy table. A corresponding waveform configuration set and a waveform update strategy are provided; Step S34: The network slave device randomly selects an initial waveform configuration from the waveform configuration set and sends a waveform switching command to the network access master device; Step S35: The network slave device follows the waveform update strategy and randomly selects a waveform configuration different from the initial waveform configuration from the waveform configuration set at preset time intervals to achieve dynamic updating of the waveform configuration of the network slave device; Step S36: The network access master device receives the waveform switching command sent by the network slave device in real time, and uses the same waveform update strategy as the network slave device to switch the waveform configuration used for receiving and sending at the corresponding time points to maintain synchronization with the waveform configuration of the network slave device.

[0017] The fourth aspect of the present invention also provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the waveform parameter configuration and control method for network access master devices described in any of the above technical solutions.

[0018] The fifth aspect of the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the waveform parameter configuration and control method for network access master devices described in any of the above technical solutions.

[0019] The waveform parameter configuration and control method, network management method, storage medium, and electronic device provided by this invention have the following beneficial technical effects:

[0020] (1) Prevent waveforms from being maliciously cracked or eavesdropped through security level-driven waveform configuration and dynamic updates;

[0021] (2) The network access master device and the network slave device dynamically adjust the waveform configuration based on the shared waveform library to adapt to different network environments and needs;

[0022] (3) The network access master device can selectively receive packets, reducing unnecessary processing overhead and improving packet receiving efficiency;

[0023] (4) In addition, the shared waveform library centrally manages waveform configuration, reducing the complexity of device configuration.

[0024] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. Attached Figure Description

[0025] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0026] Figure 1 A schematic flowchart of a waveform parameter configuration and control method for a network access master device according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic flowchart of a waveform parameter configuration and control method for a network slave device according to an embodiment of the present invention is shown.

[0028] Figure 3 A schematic flowchart of a network management method according to an embodiment of the present invention is shown. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0031] This invention proposes a waveform parameter configuration control method for a network access master device. The network access master device communicates with at least one network slave device. The control method includes: Step S11: Pre-store a shared waveform library constructed in the wireless network; wherein the shared waveform library stores N waveform configurations; each waveform configuration consists of a corresponding waveform configuration index and a set of corresponding waveform parameters; the waveform parameters include a preamble; N is a positive integer; Step S12: Receive a waveform signal sent by a network slave device on the air interface and determine whether the waveform signal has an optimal matching waveform configuration in the shared waveform library; if the determination result is yes, execute step S13; if the determination result is no, execute step S17; Step S13: Use the optimal... Step S14: Determine whether the actually parsed waveform configuration is consistent with the best matching waveform configuration; if the determination result is yes, proceed to step S15; if the determination result is no, proceed to step S17; Step S15: Determine whether the protocol type used by the network slave device exists in the list of allowed message receiving protocol types of the network access master device; if the determination result is yes, proceed to step S16; if the determination result is no, proceed to step S17; Step S16: Use the same waveform configuration as the network slave device to realize message interaction with the network slave device; Step S17: Determine the received waveform signal as an unrecognizable signal and discard the received waveform signal directly.

[0032] In this embodiment, the network access master device can selectively receive packets, reducing unnecessary processing overhead and greatly improving packet reception efficiency.

[0033] In one embodiment of the present invention, step S12 specifically includes: Step S121: Receiving a waveform signal sent by a network slave device over the air interface, and performing sliding correlation calculation on the preamble of the waveform signal and the preamble of each waveform configuration in the shared waveform library to output N correlation value sequences; Step S122: For each waveform configuration, finding the peak value P_i of each correlation value sequence; i=1,2,…,N; Step S123: Comparing the peak value P_i of each correlation value sequence with a preset dynamic threshold Thresh; if there are one or more P_i>Thresh, it indicates that the waveform signal has an optimal matching waveform configuration in the shared waveform library, and step S124 is executed; otherwise, it indicates that the waveform signal does not have an optimal matching waveform configuration in the shared waveform library, and step S17 is executed; Step S124: Selecting the largest peak value P_max from all peak values ​​exceeding the preset dynamic threshold Thresh, and determining the waveform configuration Waveform_Config_k corresponding to the peak value P_max as the optimal matching waveform configuration.

[0034] In one embodiment of the present invention, the preset dynamic threshold Thresh is dynamically adjusted according to the noise level of the current channel of the wireless network.

[0035] In one embodiment of the present invention, step S14 specifically involves: determining whether the actual parsed waveform configuration index is consistent with Waveform_Config_k.

[0036] This invention also proposes a waveform parameter configuration control method for at least one network slave device, which communicates with a network access master device. The control method includes: Step S21: Pre-storing a shared waveform library constructed in the wireless network; wherein, the shared waveform library stores N waveform configurations; each waveform configuration consists of a corresponding waveform configuration index and a set of corresponding waveform parameters; the waveform parameters include a preamble; N is a positive integer; Step S22: Any network slave device selects a corresponding waveform configuration from the shared waveform library according to the current security level to generate a corresponding waveform signal, and then sends the corresponding waveform signal to the network access master device through the air interface, so that the network access master device can receive the waveform signal sent by any network slave device on the air interface.

[0037] In one embodiment of the present invention, in step S22, any network slave device selects a corresponding waveform configuration from the shared waveform library according to the current security level and the read security level policy table; wherein, the security level policy table defines the mapping relationship between the security level of any network slave device and the waveform configuration parameters.

[0038] This invention also proposes a network management method. The network management method includes: a waveform parameter configuration and control method for a network access master device as described in any of the above technical solutions; a waveform parameter configuration and control method for at least one network slave device as described in any of the above technical solutions; the network management method further includes: Step S31: After a network slave device communicates with a network access master device using the same waveform configuration, real-time detection is performed to check whether there are potential sniffing or interference attacks in the wireless network area where the communication takes place; when the judgment result is yes, step S32 is executed; Step S32: An encrypted security level upgrade command is sent to the network slave device to upgrade the current security level levelj of the network slave device to level(j+1); wherein the security levels include: level1, level2, ..., level(j+1); j = 1, 2, ..., M; M is a positive integer; Step S33: The network slave device queries level(j+1) according to the security level policy table. A corresponding waveform configuration set and a waveform update strategy are provided; Step S34: The network slave device randomly selects an initial waveform configuration from the waveform configuration set and sends a waveform switching command to the network access master device; Step S35: The network slave device follows the waveform update strategy and randomly selects a waveform configuration different from the initial waveform configuration from the waveform configuration set at preset time intervals to achieve dynamic updating of the waveform configuration of the network slave device; Step S36: The network access master device receives the waveform switching command sent by the network slave device in real time, and uses the same waveform update strategy as the network slave device to switch the waveform configuration used for receiving and sending at the corresponding time points to maintain synchronization with the waveform configuration of the network slave device.

[0039] The present invention also proposes a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the waveform parameter configuration and control method for network access master equipment described in any of the above technical solutions.

[0040] The present invention also proposes an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the waveform parameter configuration and control method for network access master devices described in any of the above technical solutions.

[0041] The present invention also proposes a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the waveform parameter configuration and control method for at least one network slave device as described in any of the above technical solutions.

[0042] The present invention also proposes an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the waveform parameter configuration and control method for at least one network slave device described in any of the above technical solutions.

[0043] The waveform parameter configuration and control method, network management method, storage medium, and electronic device of the present invention can be applied in the fields of industrial Internet of Things, wireless communication network security, etc.

[0044] The technical solution of the present invention will be illustrated below with a specific embodiment. The technical solution corresponding to this specific embodiment mainly includes three types of entities: a network management unit, a network access master device, and at least one network slave device.

[0045] The Network Management Unit (NMU) is responsible for the centralized management of the global waveform library (i.e., the shared waveform library built within the wireless network). This waveform library is a data structure that stores all available waveform configuration templates. Each template consists of a unique waveform configuration index and a set of detailed waveform parameters.

[0046] The network access master device (AD) is deployed in the network coverage area and has the ability to transmit, receive, parse, and process waveform signals. It can synchronize a copy of the global waveform library from the network management unit.

[0047] A network slave device (FD) is a terminal device that needs to access the network. When initializing or joining the network, a network slave device obtains a copy of the currently valid waveform library from the network management unit or its associated network access master device (AD).

[0048] Combination Figure 1 , Figure 2 and Figure 3 The waveform parameter configuration and control method in this specific embodiment is implemented through the following steps:

[0049] (1) The first step is to establish and share the shared waveform library.

[0050] A shared waveform library is built within the wireless network. This library contains various waveform configurations, each defined by waveform parameters such as preamble structure, sequence code length, and symbol arrangement. Both network access masters and slave devices pre-store this shared waveform library, ensuring that they use the same waveform configuration baseline. The global waveform library (i.e., the shared waveform library) can be dynamically updated; network administrators can add, modify, or disable certain waveform configurations based on security requirements or technological advancements. All network access masters (ADs) and slave devices (FDs) periodically receive updates to the shared waveform library via a secure channel.

[0051] (2) The second step is to configure and connect the waveform of the mobile station.

[0052] like Figure 2 As shown, the device (i.e., the network slave device) is powered on and initialized, then reads the security level policy table, and then determines the current security level. When the security level is "low", waveform configuration 1 is selected: simple preamble / BPSK; when the security level is "medium", waveform configuration 5 is selected: medium preamble / QPSK; when the security level is "high", waveform configuration 8 is selected: complex preamble / 16-QAM; then a connection request is generated using the selected configuration, and then waveform signals are sent through the air interface (i.e., the slave device sends waveform signals to the network access master device through the air interface).

[0053] In short, based on the current security level, a waveform configuration is selected from the shared waveform library, a waveform signal is generated, and transmitted to the network access master device via the air interface. The security level is determined by network policy or user settings. The higher the security level, the more complex the waveform configuration selected by the network slave device (FD), such as using a longer preamble length, multiple combinations of long and short sequence codes, or more complex symbol modulation schemes. The network slave device (FD) reads the security level policy table stored internally or obtained from the network. This policy table defines the mapping relationship between the security level and the waveform configuration parameters.

[0054] For example:

[0055] Security level 1 (low): Use Waveform_Config_1 (simple preamble, BPSK modulation);

[0056] Security Level 2 (Medium): Using Waveform_Config_5 (medium complexity preamble, QPSK modulation);

[0057] Security Level 3 (High): Use Waveform_Config_8 (complex preamble, 16-QAM modulation).

[0058] If the security level of the network slave device (FD) is high, the physical layer waveform of the slave device frame can be generated according to the parameters of Waveform_Config_8. The data portion of the frame may contain the identity of the network slave device (FD) and the waveform configuration index used (Index=8), but this information can only be read after the network access master device (AD) successfully parses the waveform.

[0059] (3) The third step is to analyze and match the AD waveform of the network access master device:

[0060] like Figure 1As shown, the network access master device (AD) continuously monitors the air interface, thereby capturing waveform signals (i.e., receiving various waveform signals on the air interface), performing correlation calculations with all configurations in the waveform library (i.e., the shared waveform library), detecting correlation peaks (i.e., the peak value of each correlation value sequence), and determining whether any peak exceeds a dynamic threshold (i.e., the preset dynamic threshold Thresh). When the determination result is yes, the best matching waveform configuration is determined, and this configuration (i.e., the best matching waveform configuration) is used to parse the data payload (i.e., the waveform configuration corresponding to the waveform signal sent by a certain network slave device received on the air interface), verifying the protocol type, and determining whether the protocol type is in the allowed reception list (i.e., determining whether the protocol type used by the certain network slave device exists in the list of message reception protocol types allowed by the network access master device). When the determination result is yes, a connection is established to enable subsequent communication using the same waveform configuration (i.e., the same waveform configuration as the certain network slave device), enabling the network access master device to exchange messages with at least one network slave device.

[0061] When there is no peak value exceeding the dynamic threshold (i.e., the preset dynamic threshold Thresh), the signal is discarded (i.e., the waveform signal received over the air interface is determined to be an unrecognizable signal and is directly discarded); when the protocol type is not in the allowed reception list (i.e., the protocol type used by a certain network slave device is not in the list of allowed message reception protocol types of the network access master device), the signal is discarded (i.e., the waveform signal received over the air interface is determined to be an unrecognizable signal and is directly discarded).

[0062] Specifically, because the network access master device (AD) does not know in advance what waveform configuration the incoming signal uses, it needs to perform a "blind matching" process:

[0063] 1. Correlation Operation: The AD converter sequentially performs sliding correlation calculations on the preamble portion of the received signal with the expected preamble of each waveform configuration template in the local waveform library (i.e., the shared waveform library). Correlation operation is a classic method for calculating the similarity between two signals, and it outputs a sequence of correlation values, the peak value of which reflects the degree of matching.

[0064] 2. Peak Detection and Threshold Judgment: For each waveform configuration template, the AD converter finds the peak value P_i of its relevant output. Then, the AD converter compares all peak values ​​with a preset dynamic threshold Thresh. Thresh can be dynamically adjusted according to the current channel noise level (such as average noise power) to reduce the probability of false alarms. If one or more P_i > Thresh, proceed to the next step. Otherwise, it is determined to be an unrecognizable signal and is discarded directly.

[0065] (4) Fourth step: identify the suspected FD waveform.

[0066] The AD selects the peak with the largest value from all peaks exceeding the threshold and determines its corresponding waveform configuration, Waveform_Config_k, as the most likely configuration. In this specific embodiment, the AD calculation finds that the correlation coefficient peak with Waveform_Config_8 is the highest and exceeds the preset dynamic threshold Thresh. Only then does the AD use the parameters defined in Waveform_Config_8 (such as the modulation and coding scheme) to demodulate and decode the data payload immediately following the preamble. At this point, the AD can read the waveform configuration index 8 and the identity information of the FD contained in the frame. The AD compares the actually parsed waveform configuration index value 8 with the index 8 previously guessed through correlation calculations (i.e., determines whether the actually parsed waveform configuration is consistent with the best matching waveform configuration).

[0067] If they match, it proves that the waveform match is correct and the frame comes from a legitimate FD that uses a known waveform library. The AD further checks the protocol type used by the FD (i.e., whether the protocol type used by the FD exists in the AD's list of allowed message reception protocol types). If the type matches the message received by the AD (i.e., the protocol type used by the FD exists in the AD's list of allowed message reception protocol types), the AD device can use the same waveform configuration as the FD device to interact with the FD device.

[0068] In the step of identifying a suspected FD waveform, the AD implements selective message reception: specifically, the AD device can be configured to selectively accept messages of different protocols. For example, the AD can enable the reception of messages of specific protocols based on network requirements, such as only accepting messages of protocols that conform to security standards, thereby improving packet reception efficiency and reducing interference. Simultaneously, the AD decides whether to process messages of this protocol type based on its administrator's configuration. For example, the administrator might configure it to "only accept messages of standard protocol A and enhanced security protocol C, and reject protocol B." If the protocol of this FD is in the allowed list, the AD processes the connection request normally; otherwise, even if the waveform matches successfully, the AD will discard the message, thereby improving packet reception efficiency and avoiding wasting resources on irrelevant protocols.

[0069] (5) Fifth step, FD waveform configuration is dynamically updated.

[0070] like Figure 3 As shown, another core feature of this specific embodiment, the dynamic waveform update process, is as follows:

[0071] Step 1: Initial state. The FD (i.e., slave device) and AD (i.e., master device) have established a connection and started communicating using the initial waveform configuration Config_8.

[0072] Step 2: Security event triggered. The network management unit detects a potential sniffing or jamming attack targeting the area and decides to upgrade the security level of all high-security function calls (FDs).

[0073] Step 3: Send security level upgrade command. The network management unit sends an encrypted command to the FD via a secure channel, instructing it to upgrade the security level from Level 3 to Level 4.

[0074] Step 4: FD switches and enables the new waveform. Upon receiving the instruction, FD queries the security level policy table. It finds a waveform configuration set {Config_12, Config_15, Config_19} corresponding to security level 4, and an update policy – ​​“Randomly switch configurations within the set every 100 seconds.” FD immediately randomly selects Config_15 from this set and notifies AD (via the previous security session) that the waveform is about to be switched. AD confirms readiness, and then FD performs the first switch, switching and sending data to AD using Config_15; AD also responds using Config_15; further, step 5 is executed.

[0075] Step 5: Dynamic Update Loop. In subsequent communications, FD strictly follows the update strategy, randomly selecting a new configuration from {Config_12, Config_15, Config_19} every 100 seconds. For example, at T+100s, FD randomly selects a new configuration (such as Config_19) from the set, i.e., switching to Config_19 at T+100s and switching to Config_12 at T+200s.

[0076] Step 6: AD Synchronization Tracking. Based on the notification from the FD or a preset waveform update strategy, the AD also switches the waveform configuration used for receiving and transmitting at the corresponding time points to maintain synchronization with the FD. That is, when the FD switches to Config_19 at T+100s, the FD will notify the AD to switch to the new configuration. After the AD sends an acknowledgment of the switch to the FD, the FD communicates with the AD using the new configuration Config_19, and the AD responds using the new configuration Config_19.

[0077] For attackers, the physical layer waveform characteristics of a network are constantly, rapidly, and randomly changing. Even if they intercept communication at a certain moment, they cannot effectively sniff out or inject malicious data for an extended period, greatly enhancing the network's resistance to attacks. Higher security levels offer a smaller (but more complex) set of selectable waveform configurations and a faster update frequency (e.g., from once every 100 seconds to once every 10 seconds), resulting in higher security. The waveform configuration of FD slave devices is updated more frequently as the security level increases. That is, as the security level increases, FD selects new waveform configurations from the waveform library more often for switching, increasing the randomness and unpredictability of the waveform signal and enhancing its resistance to attacks.

[0078] In this specific embodiment, waveform configuration and dynamic updates driven by security levels prevent waveforms from being maliciously cracked or eavesdropped on; the network access master device and network slave device dynamically adjust waveform configurations based on a shared waveform library to adapt to different network environments and needs; the network access master device can selectively receive packets, reducing unnecessary processing overhead and improving packet reception efficiency; in addition, the shared waveform library centrally manages waveform configurations, reducing device configuration complexity.

[0079] Based on the above specific embodiments, the core inventive points of the present invention are described as follows: (1) A shared waveform library is constructed. The network access master device actively and dynamically identifies the waveform configuration used by the network slave device by performing real-time correlation calculations and threshold comparisons with all configurations in the shared waveform library, thereby realizing the connection; (2) After the network access master device successfully identifies the physical layer waveform, the upper layer protocol further filters the packets according to the preset whitelist and only processes the allowed protocol types; (3) The security level of the network slave device is strongly correlated with the specific configuration parameters (such as preamble length and sequence code complexity) in the shared waveform library. The higher the security level, the more complex the waveform used (such as a longer preamble length and multiple combinations of long and short sequence codes). The security concept is brought down to the physical layer, so that the communication with a high security level has stronger anti-detection, anti-interference and anti-analysis capabilities in terms of physical signal characteristics, which solves the problem of decoupling security from physical layer waveforms; (4) The waveform configuration of the network slave device is no longer fixed, but is updated by selecting new configurations in the shared waveform library in a high-frequency and random manner according to its security level, and keeps synchronously switched with the network access master device.

[0080] In summary, the waveform parameter configuration and control method, network management method, storage medium, and electronic device provided by this invention have unparalleled technical advantages.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A waveform parameter configuration and control method for a network access master device; wherein the network access master device communicates with at least one network slave device, characterized in that, The control methods include: Step S11: Pre-store the shared waveform library constructed in the wireless network; wherein, the shared waveform library stores N waveform configurations; each waveform configuration consists of a corresponding waveform configuration index and a set of corresponding waveform parameters; the waveform parameters include a preamble; N is a positive integer; Step S12: Receive a waveform signal sent by a network slave device over the air interface, and determine whether the waveform signal has an optimal matching waveform configuration in the shared waveform library; if the determination result is yes, proceed to step S13; if the determination result is no, proceed to step S17. Step S13: Use the best matching waveform configuration to parse the waveform configuration corresponding to the waveform signal; Step S14: Determine whether the actual parsed waveform configuration is consistent with the optimal matching waveform configuration; if the determination result is yes, proceed to step S15; if the determination result is no, proceed to step S17. Step S15: Determine whether the protocol type used by the network slave device exists in the list of allowed message receiving protocol types of the network access master device; if the determination result is yes, proceed to step S16; if the determination result is no, proceed to step S17. Step S16: Use the same waveform configuration as the network slave device to implement message exchange with the network slave device; Step S17: Determine the received waveform signal as an unrecognizable signal and discard the received waveform signal directly.

2. The waveform parameter configuration and control method according to claim 1, characterized in that, Step S12 specifically includes: Step S121: Receive a waveform signal sent by a network slave device over the air interface, and perform sliding correlation calculation between the preamble of the waveform signal and the preamble of each waveform configuration in the shared waveform library to output N correlation value sequences; Step S122: For each waveform configuration, find the peak value P_i of each relevant value sequence; i=1,2,…,N; Step S123: Compare the peak value P_i of each relevant value sequence with a preset dynamic threshold Thresh; if there are one or more P_i > Thresh, it indicates that the waveform signal has an optimal matching waveform configuration in the shared waveform library, and step S124 is executed; otherwise, it indicates that the waveform signal does not have an optimal matching waveform configuration in the shared waveform library, and step S17 is executed. Step S124: Select the largest peak P_max from all peaks that exceed the preset dynamic threshold Thresh, and determine the waveform configuration Waveform_Config_k corresponding to the peak P_max as the best matching waveform configuration.

3. The waveform parameter configuration management method of claim 2, wherein, The preset dynamic threshold Thresh is dynamically adjusted based on the noise level of the current channel of the wireless network.

4. The waveform parameter configuration management method of claim 2, wherein, Step S14 specifically involves determining whether the actual parsed waveform configuration index is consistent with Waveform_Config_k.

5. A network management method characterized by, include: The waveform parameter configuration and control method according to any one of claims 1 to 4; The network management method further includes: a waveform parameter configuration and control method for at least one network slave device; the at least one network slave device communicates with a network access master device; the waveform parameter configuration and control method for at least one network slave device includes: Step S21: Pre-store the shared waveform library constructed in the wireless network; wherein, the shared waveform library stores N waveform configurations; each waveform configuration consists of a corresponding waveform configuration index and a set of corresponding waveform parameters; the waveform parameters include a preamble; N is a positive integer; Step S22: Any network slave device selects the corresponding waveform configuration from the shared waveform library according to the current security level to generate the corresponding waveform signal, and then sends the corresponding waveform signal to the network access master device through the air interface, so that the network access master device can receive the waveform signal sent by any network slave device on the air interface; The network management method further includes: Step S31: After a network slave device and a network access master device communicate using the same waveform configuration, detect in real time whether there are potential sniffing or interference attacks in the wireless network area where the communication is located; if the judgment result is yes, proceed to step S32. Step S32: Send an encrypted security level upgrade command to the network slave device to upgrade the current security level levelj of the network slave device to level(j+1); wherein the security levels include: level1, level2, ..., level(j+1); j=1,2, ...,M; M is a positive integer; Step S33: The network slave device queries the security level policy table to find a waveform configuration set and a waveform update policy corresponding to level (j+1); Step S34: The network slave device randomly selects an initial waveform configuration from the waveform configuration set and sends a waveform switching command to the network access master device; Step S35: The network slave device follows the waveform update strategy and randomly selects a waveform configuration different from the initial waveform configuration from the waveform configuration set at preset intervals to realize the dynamic update of the waveform configuration of the network slave device; Step S36: The network access master device receives the waveform switching command sent by the network slave device in real time, and uses the same waveform update strategy as the network slave device to switch the waveform configuration used for receiving and transmitting at the corresponding time point to keep synchronized with the waveform configuration of the network slave device.

6. The network management method of claim 5, wherein, Also includes: Step S6: Dynamically update the shared waveform library; wherein the updated shared waveform library is periodically sent to the network access master device and at least one network slave device through a secure channel.

7. The network management method of claim 5, wherein, In step S22, any network slave device selects a corresponding waveform configuration from the shared waveform library based on the current security level and the read security level policy table; wherein, the security level policy table defines the mapping relationship between the security level of any network slave device and the waveform configuration parameters.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the method according to any one of claims 1 to 4.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 4.

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