WO2020207176A1

WO2020207176A1 - Adaptive frequency control method, apparatus and device, and computer-readable storage medium

Info

Publication number: WO2020207176A1
Application number: PCT/CN2020/078621
Authority: WO
Inventors: 李忠孝; 刘刚
Original assignee: 电信科学技术研究院有限公司
Priority date: 2019-04-09
Filing date: 2020-03-10
Publication date: 2020-10-15
Also published as: CN111800163A; CN111800163B

Abstract

Disclosed are an adaptive frequency control method, apparatus and device, and a computer-readable storage medium. The method comprises: updating a stored first frequency group mapping relationship; and sending the updated first frequency group mapping relationship to a second node in a frequency hopping synchronization ad hoc network, such that the second node updates, according to the updated first frequency group mapping relationship, a second frequency group mapping relationship stored in the second node, wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.

Description

Adaptive frequency control method, device, equipment and computer readable storage medium

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910281205.4 filed in China on April 9, 2019, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of communication technology, and in particular, to an adaptive frequency control method, device, device, and computer-readable storage medium.

Background technique

Frequency hopping communication (Frequency Hopping, FH) is a communication method in which both parties in communication change the communication frequency according to the same law (frequency hopping sequence), which is mainly used for anti-interference and confidential communication. In order to better cope with the challenge of blocking active interference, Adaptive Frequency Hopping (AFH) technology, based on automatic channel quality analysis, combines frequency and power adaptive control to make the frequency hopping communication process automatic Avoid the interfered frequency hopping frequency point, and achieve the goal of high-quality communication without interference with the smallest transmission power and the lowest probability of being intercepted.

Adaptive frequency control technology is the key to realizing an adaptive frequency hopping system. One of the typical methods is the adaptive frequency selection method, that is, before the frequency hopping synchronization is established, the two parties in the communication first perform adaptive selection in a predetermined frequency relationship. The frequency selected by the frequency function is used as the frequency hopping center frequency to generate the hopping frequency relationship for frequency hopping.

The characteristic of adaptive frequency hopping technology is its high degree of intelligence, avoiding the recurrence of bad frequencies, better anti-interference performance, and improving the communication system's passability rate. The combination of adaptive frequency hopping technology and broadband frequency hopping can greatly improve the anti-interference performance. Since more channels need to be searched to determine the channel availability, its networking time is longer.

The frequency hopping synchronous ad hoc network in the related technology usually adopts an adaptive frequency selection method for frequency configuration to generate a common sequence frequency hopping sequence. However, this off-line adaptive frequency control technology cannot meet the anti-interference requirements of frequency hopping synchronous ad hoc networks.

Summary of the invention

The embodiments of the present disclosure provide an adaptive frequency control method, device, equipment, and computer-readable storage medium to solve the problem that the adaptive frequency control technology in the related art cannot adapt to the anti-interference demand of the frequency hopping synchronous ad hoc network.

In the first aspect, embodiments of the present disclosure provide an adaptive frequency control method, which is applied to a first node in a frequency hopping synchronous ad hoc network, including:

Update the stored mapping relationship of the first frequency group;

Send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad hoc network, so that the second node can perform the data stored in the second node according to the updated first frequency grouping mapping relationship The second frequency group mapping relationship is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.

Wherein, said updating the stored first frequency group mapping relationship includes:

Perform channel detection, and update the stored first frequency group mapping relationship according to the channel detection result; and/or

Receive the third frequency group mapping relationship sent by the third node in the frequency hopping synchronization ad hoc network, and update the stored first frequency group mapping relationship according to the third frequency group mapping relationship.

Wherein, the updating the stored first frequency group mapping relationship according to the channel detection result includes:

If the channel detection result indicates that the first channel is a damaged channel and the frequency corresponding to the first channel is located in the first available frequency subset or the first candidate frequency subset of the first frequency group mapping relationship, then the second The frequency corresponding to a channel is added to the first unavailable frequency subset of the first frequency group mapping relationship, and the frequency corresponding to the first channel is deleted from the first available frequency subset and/or from the Delete the first candidate frequency subset;

Selecting a frequency from the first spare frequency subset, and adding the selected frequency to the first available frequency subset;

If the channel detection result indicates that the second channel has changed from a damaged channel to an available channel, the frequency corresponding to the second channel in the first unavailable frequency subset is added to the first spare frequency subset.

Wherein, the updating the stored first frequency group mapping relationship according to the third frequency group mapping relationship includes:

Perform a logical AND operation on the first frequency group mapping relationship and the third frequency group mapping relationship, and use the first available frequency subset of the first frequency group mapping relationship and the third frequency group mapping relationship The common frequencies in the third available frequency subset, obtaining the first available frequency subset after the first frequency group mapping relationship is updated;

Adding different frequencies in the third available frequency subset and the available frequency subset to the first unavailable frequency subset in the first frequency group mapping relationship;

From the first spare frequency subset of the first frequency group mapping relationship, select frequencies to be added to the updated first available frequency subset; wherein, the third spare frequency subset of the third frequency group mapping relationship Including the selected frequency;

Wherein, the updated first frequency group mapping relationship and the third frequency group mapping relationship are consistent.

Wherein, the method further includes:

Performing channel sounding on the updated first unavailable frequency subset;

If the channel detection result indicates that the frequency corresponding to the third channel is available, add the frequency corresponding to the third channel to the updated first subset of available frequencies;

The frequency corresponding to the third channel is a frequency in the updated first subset of unavailable frequencies.

Wherein, the sending the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network includes:

When the first available frequency subset of the first frequency group mapping relationship is updated, the updated first frequency group mapping relationship is sent to the second node in the frequency hopping synchronous ad hoc network.

The feedback channel is used to send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network.

Wherein, the feedback channel is the frequency update domain in the time frame.

Wherein, the frequency update domain and the synchronization domain in the time frame point to the same node.

Wherein, the method further includes:

According to the updated first frequency grouping mapping relationship, a common frequency hopping pattern is generated.

Wherein, the generating a common frequency hopping pattern according to the updated first frequency grouping mapping relationship includes:

Generate a common sequence frequency hopping sequence according to the shared key;

Generating a common frequency hopping pattern according to the updated first frequency group mapping relationship and the common sequence frequency hopping sequence.

Wherein, the method further includes:

Perform initial settings, including predefined frequency sets and public keys; among them:

The frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset;

The public key is used to generate a common sequence frequency hopping sequence.

In the second aspect, embodiments of the present disclosure provide an adaptive frequency control method, which is applied to a second node in a frequency hopping synchronous ad hoc network, including:

Receiving the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network;

Update the stored second frequency group mapping relationship according to the updated first frequency group mapping relationship;

Generate a common frequency hopping pattern according to the updated second frequency grouping mapping relationship;

Wherein, the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.

Wherein, the updating the stored second frequency grouping mapping relationship according to the updated first frequency grouping mapping relationship includes:

Perform a logical AND operation on the updated first frequency group mapping relationship and the second frequency group mapping relationship, and use the first available frequency subset and the second frequency in the updated first frequency group mapping relationship Grouping common frequencies in the second available frequency subset in the group mapping relationship, and obtaining the second available frequency subset after the second frequency group mapping relationship is updated;

Add different frequencies in the first available frequency subset and the second available frequency subset to the second unavailable frequency subset of the second frequency group mapping relationship to obtain the second frequency group mapping relationship The updated second unavailable frequency subset;

From the second spare frequency subset of the second frequency group mapping relationship, select frequencies to add to the updated second available frequency subset to obtain the final available frequency subset in the second frequency group mapping relationship; Wherein, the first spare frequency subset of the first frequency group mapping relationship includes the selected frequency.

Wherein, the method further includes:

Performing channel sounding on the updated second unavailable frequency subset;

If the channel detection result indicates that the frequency corresponding to the fourth channel is available, add the frequency corresponding to the fourth channel to the final available frequency subset;

The frequency corresponding to the fourth channel is a frequency in the updated second subset of unavailable frequencies.

Wherein, the generating a common frequency hopping pattern according to the updated second frequency group mapping relationship and the common sequence frequency hopping sequence includes:

Generating a common frequency hopping pattern according to the updated second frequency grouping mapping relationship and the common sequence frequency hopping sequence.

Wherein, the method further includes:

In a third aspect, embodiments of the present disclosure provide an adaptive frequency control device, which is applied to a first node in a frequency hopping synchronous ad hoc network, including:

The update module is used to update the stored first frequency group mapping relationship;

The sending module is configured to send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad hoc network, so that the second node can perform the The second frequency group mapping relationship stored in the second node is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.

Wherein, the update module includes:

The first update sub-module is used to perform channel detection and update the stored first frequency group mapping relationship according to the channel detection result; and/or

The second update submodule is configured to receive the third frequency group mapping relationship sent by the third node in the frequency hopping synchronization ad hoc network, and update the stored first frequency group mapping relationship according to the third frequency group mapping relationship.

In a fourth aspect, an embodiment of the present disclosure provides an adaptive frequency control device, which is applied to a second node in a frequency hopping synchronous ad hoc network, including:

The receiving module is configured to receive the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network;

The update module is configured to update the stored second frequency group mapping relationship according to the updated first frequency group mapping relationship;

A generating module, configured to generate a common frequency hopping pattern according to the updated second frequency grouping mapping relationship;

Wherein, the update module includes:

The first processing submodule is configured to perform a logical AND operation on the updated first frequency group mapping relationship and the second frequency group mapping relationship, and use the first available frequency in the updated first frequency group mapping relationship A subset and a common frequency in the second available frequency subset in the second frequency group mapping relationship, and obtain the second available frequency subset after the second frequency group mapping relationship is updated;

The second processing submodule is configured to add different frequencies in the first available frequency subset and the second available frequency subset to the second unavailable frequency subset of the second frequency group mapping relationship to obtain The second unavailable frequency subset after the updated second frequency group mapping relationship;

The third processing submodule is configured to select frequencies from the second spare frequency subset of the second frequency group mapping relationship and add them to the updated second available frequency subset to obtain the second frequency group mapping relationship The final available frequency subset in the first; wherein, the first spare frequency subset of the first frequency group mapping relationship includes the selected frequency.

In the fifth aspect, the embodiments of the present disclosure provide a network side device, which is applied to a first node in a frequency hopping synchronous ad hoc network, and includes: a transceiver, a memory, a processor, and a device stored on the memory and available in all The computer program running on the processor;

The processor is used to read the program in the memory and execute the following process:

Update the stored mapping relationship of the first frequency group;

The transceiver is configured to send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad hoc network, so that the second node can perform the correction according to the updated first frequency grouping mapping relationship The second frequency group mapping relationship stored by the second node is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.

Wherein, the processor is also used to read the program in the memory and execute the following process:

Performing channel sounding on the updated first unavailable frequency subset;

Wherein, the transceiver is further configured to, in the case that the first available frequency subset of the first frequency group mapping relationship is updated, send the updated first frequency to the second node in the frequency hopping synchronous ad hoc network A frequency group mapping relationship.

Wherein, the transceiver is further configured to use the feedback channel to send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network.

The feedback channel is a frequency update domain in a time frame, and the frequency update domain and a synchronization domain in the time frame point to the same node.

In a sixth aspect, the embodiments of the present disclosure provide a network side device, which is applied to a second node in a frequency hopping synchronous ad hoc network, including: a transceiver, a memory, a processor, and a device stored on the memory and available in all The computer program running on the processor;

The transceiver is configured to receive the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network;

Performing channel sounding on the updated second unavailable frequency subset;

In a seventh aspect, embodiments of the present disclosure provide a computer-readable storage medium for storing a computer program, which when executed by a processor, implements the steps in the method described in the first aspect; or, When the computer program is executed by the processor, the steps in the method described in the second aspect are implemented.

In the embodiments of the present disclosure, the frequency update mechanism can actively avoid interference channels in real time, thereby solving the problem of adaptive frequency control in the frequency hopping synchronous ad hoc network, and enhancing the anti-interference ability of the frequency hopping synchronous ad hoc network.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

FIG. 1 is one of the flowcharts of an adaptive frequency control method provided by an embodiment of the present disclosure;

2 is the second flowchart of the adaptive frequency control method provided by the embodiment of the present disclosure;

Figure 3 is a structural diagram of a frequency hopping synchronous ad hoc network system provided by an embodiment of the present disclosure;

4 is the third flowchart of the adaptive frequency control method provided by the embodiment of the present disclosure;

FIG. 5 is a schematic diagram of the structure of a super frame and a time frame provided by an embodiment of the present disclosure;

FIG. 6 is one of the structural diagrams of the adaptive frequency control device provided by an embodiment of the present disclosure;

FIG. 7 is the second structural diagram of the adaptive frequency control device provided by an embodiment of the present disclosure;

FIG. 8 is one of the structural diagrams of a network side device provided by an embodiment of the present disclosure;

Fig. 9 is a second structural diagram of a network side device provided by an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

Referring to Fig. 1, Fig. 1 is a flowchart of an adaptive frequency control method provided by an embodiment of the present disclosure, which is applied to the first node in a frequency hopping synchronous ad hoc network. The first node may be any node. As shown in Figure 1, it includes the following steps:

Step 101: Update the stored first frequency group mapping relationship.

In the embodiment of the present disclosure, each node in the frequency hopping synchronous ad hoc network updates its stored frequency group mapping relationship in real time, and sends it to other nodes in the network, so that each node has a consistent frequency group mapping relationship.

Among them, for each node, initial settings can be performed first, including a predefined frequency set and a public key; wherein: the frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset; the public The key is used to generate a common sequence frequency hopping sequence. Then, the frequency group mapping relationship may refer to, for example, the corresponding relationship between each of the above frequency subsets and the content included therein. During the initialization process, the unavailable frequency subset can be set to empty.

In this step, the first node may perform channel detection, and update the stored first frequency group mapping relationship according to the channel detection result; or, receive the third frequency group mapping relationship sent by the third node in the frequency hopping synchronization ad hoc network , And update the stored first frequency group mapping relationship according to the third frequency group mapping relationship. Alternatively, the update may be performed not only according to the channel detection result, but also according to the third frequency group mapping relationship sent by the third node, and the two update processes may have no sequence relationship. Among them, the third node may refer to any node other than the first node in the frequency hopping synchronous ad hoc network.

During the operation of the network, the first node can periodically perform channel detection to determine whether the detected channel is a damaged channel. The real-time channel evaluation technology can use evaluation criteria such as Signal to Interference plus Noise Ratio (SINR), Bit Error Ratio (BER), Packet Loss Rate (PLRs), etc. The obtained reference information is linearly filtered as the channel quality criterion. If the reference information processed by linear filtering exceeds a certain threshold, the channel is considered damaged.

(1) Update the stored first frequency group mapping relationship according to the channel detection result:

Specifically, in this step, if the channel detection result indicates that the first channel is a damaged channel and the frequency corresponding to the first channel is located in the first available frequency subset or the first candidate frequency in the first frequency group mapping relationship Sub-set, the frequency corresponding to the first channel is added to the first unavailable frequency subset of the first frequency group mapping relationship, and the frequency corresponding to the first channel is changed from the first available frequency sub-set Collectively delete and/or delete from the first candidate frequency subset. At the same time, a frequency is selected from the first spare frequency subset, and the selected frequency is added to the first available frequency subset. If the channel detection result indicates that the second channel has changed from a damaged channel to an available channel, the frequency corresponding to the second channel in the first unavailable frequency subset is added to the first spare frequency subset.

In order to further ensure the timeliness of the update, on the basis of the foregoing, channel detection may also be performed on the updated first unavailable frequency subset. If the channel detection result indicates that the frequency corresponding to the third channel is available, the frequency corresponding to the third channel is added to the updated first subset of available frequencies. Wherein, the frequency corresponding to the third channel is a frequency in the updated first subset of unavailable frequencies.

(2) Update the stored first frequency group mapping relationship according to the third frequency group mapping relationship of the third node:

In the process of updating the first frequency group mapping relationship according to the third frequency group mapping relationship sent by the third node, a logical AND operation is performed on the first frequency group mapping relationship and the third frequency group mapping relationship, and the The first available frequency subset in the first frequency group mapping relationship and the common frequency in the third available frequency subset in the third frequency group mapping relationship, to obtain the first available frequency after the first frequency group mapping relationship is updated Subset. At the same time, different frequencies in the third available frequency subset and the available frequency subset are added to the first unavailable frequency subset of the first frequency group mapping relationship. From the first spare frequency subset of the first frequency group mapping relationship, select frequencies to be added to the updated first available frequency subset; wherein, the third spare frequency subset of the third frequency group mapping relationship It includes the selected frequency; wherein the updated first frequency group mapping relationship and the third frequency group mapping relationship have consistency.

If the two update processes are combined, then on the basis of updating in accordance with (1), the method of (2) can be used to update; or, on the basis of updating in accordance with (2), Use (1) to update.

Among them, the "consistency" here can be understood as the iterative update of its own frequency grouping mapping relationship by each node, and finally reaching a state where each node has a consensus on a certain frequency grouping mapping relationship.

Among them, "consensus formation" is a professional term derived from a distributed consensus algorithm, which refers to a consensus on a certain data structure or processing result. Typical distributed consensus (consensus) algorithms include: Raft protocol, consistent hash (hash) algorithm, PoW (Proof Of Work) algorithm, PoC (Proof of Concept, proof of concept) algorithm, PoE ( Proof of Existence, algorithm, Ripple consensus (used in blockchain), etc.

For example, the “consistency” may mean that the contents included in both parties are all the same, and may also mean that only the contents of the available frequency subset included in both parties are the same.

For example, the contents of the available frequency subset, the unavailable frequency subset, and the spare frequency subset of the updated first frequency group mapping relationship and the third frequency group mapping relationship are all the same; or the updated second frequency subset The first frequency group mapping relationship is the same as the available frequency subset of the third frequency group mapping relationship.

Alternatively, the “consistency” can also mean that both parties have the same understanding of a certain definition or a certain relationship.

For example, although the contents included in the updated first frequency group mapping relationship and the third frequency group mapping relationship are not completely the same, the content included in the updated first frequency group mapping relationship or the third frequency group mapping relationship is not completely the same. A certain orientation or interpretation included in the frequency group mapping relationship makes the updated first frequency group mapping relationship the same as the third frequency group mapping relationship.

Specifically, the content of the available frequency subset and the spare frequency subset of the updated first frequency grouping relationship and the third frequency grouping mapping relationship are the same, and the unavailable frequency subset of the updated first frequency grouping mapping relationship is not Contains any frequency, but it contains an identifier to indicate that all frequencies except the content of the available frequency subset and the spare frequency subset are unavailable frequencies, and the unavailable frequency subset of the third frequency group mapping relationship just includes The frequency indicated by the label.

Step 102: Send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network.

Through this step, the second node can update the second frequency group mapping relationship stored by the second node according to the updated first frequency group mapping relationship; wherein, the updated second frequency group The mapping relationship is consistent with the updated first frequency group mapping relationship.

In the embodiments of the present disclosure, in order to ensure the synchronization of updates between nodes, in this step, in the case that the first available frequency subset of the first frequency group mapping relationship is updated, the frequency hopping The second node in the synchronous ad hoc network sends the updated first frequency group mapping relationship. Specifically, the feedback channel is used to send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network. The feedback channel is the frequency update domain in the time frame. The time frame includes: synchronization domain, service transmission domain, and frequency update domain. Then, in order to improve the update efficiency, the frequency update domain and the synchronization domain in the time frame point to the same node. Therefore, the receiving end can obtain the updated information of a certain node in time.

On the basis of the foregoing embodiment, the method may further include: the first node generates a common frequency hopping pattern according to the updated first frequency grouping mapping relationship.

Specifically, in this step, a common frequency hopping sequence is generated according to the shared key, and a common frequency hopping pattern is generated according to the updated first frequency group mapping relationship and the common frequency hopping sequence. The public frequency hopping pattern reflects the consistent understanding of the current electromagnetic environment of all nodes in the network and maintains online dynamic updates.

Referring to FIG. 2, FIG. 2 is a flowchart of an adaptive frequency control method provided by an embodiment of the present disclosure, which is applied to a second node in a frequency hopping synchronous ad hoc network. The second node may be any node other than the first node. As shown in Figure 2, it includes the following steps:

Step 201: Receive the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network.

Step 202: Update the stored second frequency group mapping relationship according to the updated first frequency group mapping relationship.

Specifically, in this step, the second node can be updated as follows:

In order to further ensure the timeliness of the update, on the basis of the foregoing, it is also possible to perform channel detection on the updated second unavailable frequency subset. If the channel detection result indicates that the frequency corresponding to the fourth channel is available, the frequency corresponding to the fourth channel is added to the final available frequency subset; the frequency corresponding to the fourth channel is the updated second Frequency in a subset of unavailable frequencies.

Step 203: Generate a common frequency hopping pattern according to the updated second frequency group mapping relationship;

Wherein, the second node may also perform initial settings first, including a predefined frequency set and a public key; wherein: the frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset; the public secret The key is used to generate a common sequence frequency hopping sequence.

In this step, the second node generates a common sequence frequency hopping sequence according to the shared key, and then the second node generates a common frequency hopping pattern according to the updated second frequency group mapping relationship and the common sequence frequency hopping sequence.

Then, for the second node, in addition to updating its own frequency group mapping relationship based on the information of the first node, it can also continuously update it based on its own channel detection results and send it to other nodes. Wherein, the second node updates its own frequency grouping mapping relationship in the same manner as the aforementioned update method of the first node, and the method of sending to other nodes is also the same as the sending method of the first node.

In view of the fact that the adaptive frequency selection technology in the related art cannot meet the real-time anti-interference requirements of the frequency hopping synchronous ad hoc network, embodiments of the present disclosure propose a frequency hopping synchronous ad hoc network and an online adaptive frequency control method. Through online channel detection and interference feedback, the available frequency subset is updated in real time, and the frequency consistency of the multi-hop distributed system is ensured through the diffusion mechanism, so as to realize the real-time active avoidance of unavailable channels of the common sequence frequency hopping sequence and enhance frequency hopping The anti-interference ability of the synchronous ad hoc network.

Specifically, as shown in FIG. 3, the frequency hopping synchronous ad hoc network system of the embodiment of the present disclosure may include the following functional units:

(1) Channel detection unit 301: used for channel quality detection, and feedback the detection results of each channel;

(2) Frequency group mapping unit 302: used to dynamically update the mapping relationship of frequency groups according to the channel detection result. Here, the channels are divided into three categories: available, unavailable, and unused (or spare);

(3) Frequency grouping sending unit 303: used to spread the current frequency grouping mapping relationship to neighboring nodes through the broadcast channel;

(4) Frequency group receiving unit 304: used to receive the frequency group mapping relationship of other nodes, and update the local frequency group mapping relationship online, so that the frequency group mapping relationship is consistent with neighboring nodes;

(5) Uniform steady-state frequency hopping frequency set generating unit 305: used to generate a stable frequency hopping frequency set according to the dynamic frequency group mapping relationship, and output the frequency hopping frequency set as a parameter to the frequency hopping frequency synthesis unit;

(6) Frequency hopping sequence generating unit 306: used to generate a common sequence frequency hopping sequence according to the shared key;

(7) Frequency hopping frequency synthesis unit 307: used to perform frequency synthesis according to a common sequence frequency hopping sequence and a consistent steady-state frequency set to generate a common frequency hopping pattern.

With reference to FIG. 4, the online adaptive frequency control method of the embodiment of the present disclosure includes the following steps:

Step 401: The node performs initial configuration.

Here, the node initializes and configures two main parameters, including a predefined frequency set and public key. The frequency set is used to classify the frequency set, and the public key is used to generate the public sequence frequency hopping sequence and keep it unchanged during the network operation period.

The predefined frequency set is divided into three subsets: available frequency subset, unavailable frequency subset and spare frequency subset. During initialization, the unavailable frequency subset can be set to an empty set.

Step 402: The node performs channel detection.

During the operation of the network, nodes periodically perform channel detection and perform real-time evaluation of channel quality. Optionally, the real-time channel evaluation technology can use evaluation criteria such as signal-to-interference and noise ratio, bit error rate, and packet loss rate (PLRs). The obtained reference signal is linearly filtered and used as the channel quality criterion. If it exceeds a certain threshold, it is considered that the channel is damaged.

Among them, the signal-to-interference and noise ratio refers to the ratio of the strength of the received useful signal to the strength of the received interference signal (noise plus interference). Bit error rate refers to the bit error rate within a period of time. When applied to frequency adaptive control, care should be taken to avoid occasional burst interference and be identified as the interfered channel. Packet loss rate (PLRs) refers to the ratio of blocks with errors to the total number of received blocks. If the damage rate exceeds the threshold defined by the system, the channel is considered to be a bad channel.

If channel detection finds a damaged channel, it returns the result of channel detection, indicating the damaged channel ID; if there is no channel damage, no processing is done.

Step 403: The node updates the frequency grouping mapping table.

The channel damage found in the channel detection phase will trigger the update of the local frequency grouping mapping table, including the following operations:

(1) If there is a damaged channel, if it is located in the available frequency subset, remove the damaged channel from the available frequency subset; if it is located in the spare frequency subset, remove the damaged channel from the available frequency subset. At the same time, it is added to the unavailable frequency subset, and channels are selected from the spare frequency subset and added to the available frequency subset;

(2) If the damaged channel in the unavailable frequency subset becomes available again, move it to the spare frequency subset.

Step 404: The node sends the frequency grouping mapping table.

If the local frequency group mapping table changes, especially the available frequency subset changes, the frequency group mapping table sending operation is triggered. The node compresses and encodes the current local frequency grouping mapping table or the available frequency subset, and broadcasts it in the feedback channel allocated for itself, and spreads it to neighboring nodes. The feedback channel is also called the frequency update domain of the time frame, and is allocated to specific nodes in advance.

Optionally, the feedback channel of the node may be allocated based on the time frame structure of the frequency hopping synchronous ad hoc network. As shown in Figure 5, the time frame structure of the frequency hopping synchronous ad hoc network includes three levels of channel divisions: superframe, time frame, and transmission domain. The superframe is composed of N time frames (N is an integer and greater than zero), and each node has its own control channel resources (synchronization domain, frequency update domain) in a specific time frame, forming a complete network maintenance cycle. The time frame is the basic transmission scheduling cycle, including three parts: synchronization domain, service transmission domain and frequency update domain. The synchronization domain is allocated to all the nodes on the network, so that the entire network nodes participate in the synchronization maintenance of the non-central network; the channel resources of the service transmission domain are statically or dynamically allocated to the nodes with transmission requirements, and the latter performs the service transmission of the data plane; The frequency update domain is a newly-added channel resource of the time frame structure, which is fixedly allocated to a specific node, and corresponds to the node allocation identifier of the synchronization domain, and is used for the node to feed back frequency set update information.

Therefore, the frequency set update period (P_updating) of the frequency hopping synchronous ad hoc network is equal to the superframe length (L_superframe), which is usually the product of the time frame length (L_frame) and the number of network nodes (N_capacity), namely: P_updating=L_frame×N_capacity.

In order to ensure the waiting time delay index of data transmission, it is necessary to shorten the time frame length as much as possible. The time frame length of the frequency hopping synchronous ad hoc network is usually several tens of milliseconds. When the number of users in the network is less than 100, the frequency set update cycle is several hundred milliseconds to several seconds, so as to ensure the real-time update and real-time anti-interference requirements of the available frequency set of the frequency hopping synchronous ad hoc network.

Step 405: The node receives the frequency grouping mapping table.

After the node receives the frequency grouping mapping table sent by the neighboring node, it updates the local frequency grouping mapping table so that the local frequency grouping mapping table is consistent with the frequency grouping mapping table of the neighboring node.

Step 406: The node generates a uniformly stable frequency set.

Because the electromagnetic environment of each node in the ad hoc network is different, or because the channel detection result has a certain probability of misjudgment, the frequency grouping mapping table of each node may be inconsistent. Therefore, a consistent convergence method is provided here. Generate a uniformly stable frequency set. Specifically, the uniform and stable convergence method of the embodiment of the present disclosure includes the following steps:

Step 4061, firstly adopt a logical AND operation to retain the node's own frequency group mapping relationship and the shared available frequencies in the received frequency group mapping relationship to form a new local available frequency subset;

Step 4062, then move the inconsistent available frequencies into the local unavailable frequency subset;

Step 4063: From the node's own frequency group mapping relationship and the received frequency group mapping relationship in the spare frequency subset, select uniformly available frequencies and add them to the new local available frequency subset to meet the number of available frequency subset elements. ；

Step 4064: Perform channel detection and evaluation on the new local unavailable frequency subset again, and if the channel is available, move it to the new local spare frequency subset.

Through the above uniformly stable convergence method, each node in the frequency hopping synchronous ad hoc network forms a consistent understanding of the electromagnetic environment, and generates a uniformly stable frequency set, which is used to generate a common frequency hopping pattern that is uniformly available to each node.

Step 407: The node generates a common frequency hopping pattern.

Based on the above-mentioned uniformly stable frequency set and common sequence frequency hopping sequence, the frequency hopping frequency synthesis unit adopts a frequency synthesis method to generate a common frequency hopping pattern. The public frequency hopping pattern reflects the consistent understanding of the current electromagnetic environment of all nodes in the network and maintains online dynamic updates.

Through the above-mentioned channel detection, frequency grouping mapping table update and uniformly stable convergence method, each node in the frequency hopping synchronous ad hoc network has formed a consistent understanding of the electromagnetic environment, and generated a consistent and stable frequency set for generating consistent Common hopping patterns available.

It can be seen from the above solution that in the embodiments of the present disclosure, through the channel detection and frequency update mechanism, the interference channel can be actively avoided in real time, thereby solving the problem of adaptive frequency control in the frequency hopping synchronous ad hoc network and enhancing frequency hopping. The anti-interference ability of the synchronous ad hoc network. The diffusion mechanism of the frequency grouping mapping table in the embodiment of the present disclosure enables the change of the available frequency set to be automatically propagated in the network, helping the distributed frequency hopping network to capture the changes in the electromagnetic environment, thereby ensuring the effectiveness of the frequency hopping synchronous self-organizing network anti-interference method Sex. The method for generating a consistent stable frequency set in the embodiment of the present disclosure ensures the consistent convergence of the available frequency set in a distributed network system, so that each node in the network has a consistent understanding of the electromagnetic environment, and generates a consistent frequency hopping pattern across the entire network , So as to ensure the reliability of the anti-interference method of frequency hopping synchronous ad hoc network.

Referring to FIG. 6, FIG. 6 is a structural diagram of an adaptive frequency control device according to an embodiment of the present disclosure, which is applied to the first node in a frequency hopping synchronous ad hoc network, including:

The update module 601 is used to update the stored first frequency group mapping relationship;

The sending module 602 is configured to send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad-hoc network, so that the second node can perform the updated first frequency grouping mapping relationship according to the updated first frequency grouping mapping relationship. The second frequency group mapping relationship stored in the second node is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.

Optionally, the update module 601 includes: a first update submodule, configured to perform channel detection, and update the stored first frequency group mapping relationship according to the channel detection result; and/or a second update submodule, configured to receive Frequency hopping is synchronized with the third frequency group mapping relationship sent by the third node in the network, and the stored first frequency group mapping relationship is updated according to the third frequency group mapping relationship.

Optionally, the first update submodule includes:

The first processing unit is configured to: if the channel detection result indicates that the first channel is a damaged channel and the frequency corresponding to the first channel is located in the first available frequency subset or the first candidate frequency subset of the first frequency group mapping relationship Is concentrated, the frequency corresponding to the first channel is added to the first unavailable frequency subset of the first frequency group mapping relationship, and the frequency corresponding to the first channel is removed from the first available frequency subset Delete and/or delete from the first candidate frequency subset;

A second processing unit, configured to select frequencies from the first spare frequency subset, and add the selected frequencies to the first available frequency subset;

The third processing unit is configured to increase the frequency corresponding to the second channel in the first unavailable frequency subset to the first standby if the channel detection result indicates that the second channel has changed from a damaged channel to an available channel. Frequency subset.

Optionally, the second update submodule is specifically configured to:

The fourth processing unit is configured to perform a logical AND operation on the first frequency group mapping relationship and the third frequency group mapping relationship, and use the first available frequency subset of the first frequency group mapping relationship and the first frequency group mapping relationship. A common frequency in the third available frequency subset in the three frequency group mapping relationship, obtaining the first available frequency subset after the first frequency group mapping relationship is updated;

A fifth processing unit, configured to add different frequencies in the third available frequency subset and the available frequency subset to the first unavailable frequency subset in the first frequency group mapping relationship;

The sixth processing unit is configured to select frequencies from the first spare frequency subset of the first frequency group mapping relationship to add to the updated first available frequency subset; wherein, the third frequency group mapping relationship The third spare frequency subset of includes the selected frequency;

Optionally, the first update submodule or the second update submodule may further include:

The seventh processing unit is configured to perform channel detection on the updated first unavailable frequency subset; the eighth processing unit is configured to perform channel detection on the updated first unavailable frequency subset; The frequencies corresponding to the three channels are added to the updated first subset of available frequencies; the frequencies corresponding to the third channel are frequencies in the updated first subset of unavailable frequencies.

Optionally, the sending module 602 is specifically configured to send the update to the second node in the frequency hopping synchronous ad hoc network when the first available frequency subset of the first frequency group mapping relationship is updated. The following first frequency group mapping relationship. Specifically, the feedback channel is used to send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network.

Wherein, the feedback channel is the frequency update domain in the time frame. The frequency update domain and the synchronization domain in the time frame point to the same node.

Optionally, the device may further include: a generating module 603, configured to generate a common frequency hopping pattern according to the updated first frequency grouping mapping relationship.

Wherein, the generating module 603 includes: a first generating sub-module, which is used to generate a common sequence frequency hopping sequence according to the shared key; a second generating sub-module, which is used to generate a frequency hopping sequence according to the updated first frequency grouping relationship The common sequence frequency hopping sequence generates a common frequency hopping pattern.

Optionally, the device may further include:

The initialization module 604 is used to perform initialization settings, including a predefined frequency set and a public key; wherein: the frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset; the public key is used To generate a common sequence frequency hopping sequence.

For the working principle of the device in the embodiment of the present disclosure, refer to the description of the foregoing method embodiment.

Referring to FIG. 7, FIG. 7 is a structural diagram of an adaptive frequency control device of an embodiment of the present disclosure, which is applied to the second node in a frequency hopping synchronous ad hoc network, including:

The receiving module 701 is configured to receive the updated first frequency grouping mapping relationship sent by the first node in the frequency hopping synchronization ad hoc network; the updating module 702 is configured to perform the correction according to the updated first frequency grouping mapping relationship The stored second frequency group mapping relationship is updated; the generating module 703 is configured to generate a common frequency hopping pattern according to the updated second frequency group mapping relationship; wherein, the updated second frequency group mapping relationship and the updated first A frequency group mapping relationship is consistent.

Optionally, the update module 702 includes:

Optionally, the update module 702 may further include:

The fourth processing sub-module is used to perform channel detection on the updated second unavailable frequency subset; the fifth processing sub-module is used to detect all channels if the channel detection result indicates that the frequency corresponding to the fourth channel is available. The frequency corresponding to the fourth channel is added to the final available frequency subset; the frequency corresponding to the fourth channel is the frequency in the updated second unavailable frequency subset.

Optionally, the generating module 703 includes:

The first generation sub-module is used to generate a common sequence frequency hopping sequence according to the shared key; the second generation sub-module is used to generate a common hopping sequence according to the updated second frequency group mapping relationship and the common sequence hopping sequence Frequency pattern.

Optionally, the device may further include: an initialization module 704 for performing initialization settings, including a predefined frequency set and a public key; wherein: the frequency set includes: an available frequency subset, an unavailable frequency subset, and A spare frequency subset; the public key is used to generate a public sequence frequency hopping sequence.

For the working principle of the device described in the embodiment of the present disclosure, reference may be made to the description of the foregoing method embodiment.

In the embodiment of the present disclosure, a network side device is also provided. The network-side device includes a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor; the processor is used to read the program in the memory and execute the present disclosure The process of the adaptive frequency control method described in the embodiment.

As shown in FIG. 8, a network side device according to an embodiment of the present disclosure, which is applied to the first node in a frequency hopping synchronous ad hoc network, includes:

The processor 800 is configured to read a program in the memory 820 and execute the following process: update the stored first frequency group mapping relationship;

The transceiver 810 is configured to send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad hoc network, so that the second node can perform the updated first frequency grouping mapping relationship according to the updated first frequency grouping mapping relationship. The second frequency group mapping relationship stored in the second node is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.

Wherein, in FIG. 8, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors related to the 800 generation of the processor and various circuits related to the memory of the 820 generation are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The transceiver 810 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 800 when performing operations.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 800 when performing operations.

The processor 800 is also used to read the computer program and execute the following steps:

Performing channel sounding on the updated first unavailable frequency subset;

The transceiver 810 is further configured to, when the first available frequency subset of the first frequency group mapping relationship is updated, send the updated first frequency to the second node in the frequency hopping synchronous ad hoc network. Frequency group mapping relationship.

The transceiver 810 is further configured to use the feedback channel to send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network.

As shown in FIG. 9, a network-side device according to an embodiment of the present disclosure, which is applied to a second node in a frequency hopping synchronous ad hoc network, includes a processor 900 and a transceiver 910;

The transceiver 910 is configured to receive the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network;

The processor 900 is configured to read a program in the memory 920 and execute the following process:

Among them, in FIG. 9, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors related to the 900 generation relationship of the processor and various circuits of the memory related to the memory 920 generation relationship are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The transceiver 910 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 when performing operations.

The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 when performing operations.

The processor 900 is also used to read the computer program and execute the following steps:

Performing channel sounding on the updated second unavailable frequency subset;

In addition, the computer-readable storage medium of the embodiment of the present disclosure is used to store a computer program, and the computer program can be executed by a processor to realize the adaptive frequency control method of the embodiment of the present disclosure.

Specifically, the computer-readable storage medium of the embodiment of the present disclosure is used to store a computer program, and the computer program can be executed by a processor to implement the following steps:

Update the stored mapping relationship of the first frequency group;

Wherein, the method further includes:

Performing channel sounding on the updated first unavailable frequency subset;

Wherein, the feedback channel is the frequency update domain in the time frame.

Wherein, the method further includes:

Performing channel sounding on the updated second unavailable frequency subset;

Wherein, the method further includes:

In the several embodiments provided in this application, it should be understood that the disclosed method and device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

In addition, the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be separately physically included, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

The above-mentioned integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The above-mentioned software function unit is stored in a storage medium, and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute part of the steps of the transceiver method described in each embodiment of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

It should be noted that it should be understood that the division of the above modules is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be implemented in the form of hardware; some modules can be implemented in the form of calling software by processing elements, and some of the modules can be implemented in the form of hardware. For example, the determining module may be a separately established processing element, or it may be integrated into a certain chip of the above-mentioned device for implementation. In addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device Call and execute the functions of the above-identified module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together or implemented independently. The processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each of the above modules can be completed by hardware integrated logic circuits in the processor element or instructions in the form of software.

For example, each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above method, for example: one or more application specific integrated circuits (ASIC), or, one or Multiple microprocessors (digital signal processors, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc. For another example, when one of the above modules is implemented in the form of processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The terms “first”, “second”, etc. in the specification and claims of the present disclosure are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein, for example, are implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In addition, the use of "and/or" in the specification and claims means at least one of the connected objects, such as A and/or B and/or C, which means that it includes A alone, B alone, C alone, and both A and B Exist, B and C exist, A and C exist, and A, B, and C exist in 7 situations. Similarly, the use of "at least one of A and B" in this specification and claims should be understood as "A alone, B alone, or both A and B exist".

The above are optional implementations of the present disclosure. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present disclosure, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present disclosure.

Claims

An adaptive frequency control method, applied to the first node in a frequency hopping synchronous ad hoc network, includes:

Update the stored mapping relationship of the first frequency group;

Send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad hoc network, so that the second node can perform the data stored in the second node according to the updated first frequency grouping mapping relationship The second frequency group mapping relationship is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.
The method according to claim 1, wherein said updating the stored first frequency group mapping relationship comprises:

Perform channel detection, and update the stored first frequency group mapping relationship according to the channel detection result; and/or

Receive the third frequency group mapping relationship sent by the third node in the frequency hopping synchronization ad hoc network, and update the stored first frequency group mapping relationship according to the third frequency group mapping relationship.
The method according to claim 2, wherein the updating the stored first frequency group mapping relationship according to the channel detection result comprises:

If the channel detection result indicates that the first channel is a damaged channel and the frequency corresponding to the first channel is located in the first available frequency subset or the first candidate frequency subset of the first frequency group mapping relationship, then the second The frequency corresponding to a channel is added to the first unavailable frequency subset of the first frequency group mapping relationship, and the frequency corresponding to the first channel is deleted from the first available frequency subset and/or from the Delete the first candidate frequency subset;

Selecting a frequency from the first spare frequency subset, and adding the selected frequency to the first available frequency subset;

If the channel detection result indicates that the second channel has changed from a damaged channel to an available channel, the frequency corresponding to the second channel in the first unavailable frequency subset is added to the first spare frequency subset.
The method according to claim 2, wherein the updating the stored first frequency group mapping relationship according to the third frequency group mapping relationship comprises:

Perform a logical AND operation on the first frequency group mapping relationship and the third frequency group mapping relationship, and use the first available frequency subset of the first frequency group mapping relationship and the third frequency group mapping relationship The common frequencies in the third available frequency subset, obtaining the first available frequency subset after the first frequency group mapping relationship is updated;

Adding different frequencies in the third available frequency subset and the available frequency subset to the first unavailable frequency subset in the first frequency group mapping relationship;

From the first spare frequency subset of the first frequency group mapping relationship, select frequencies to be added to the updated first available frequency subset; wherein, the third spare frequency subset of the third frequency group mapping relationship Including the selected frequency;

Wherein, the updated first frequency group mapping relationship and the third frequency group mapping relationship are consistent.
The method according to claim 3 or 4, further comprising:

Performing channel sounding on the updated first unavailable frequency subset;

If the channel detection result indicates that the frequency corresponding to the third channel is available, add the frequency corresponding to the third channel to the updated first subset of available frequencies;

The frequency corresponding to the third channel is a frequency in the updated first subset of unavailable frequencies.
The method according to claim 1, wherein the sending the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network comprises:

When the first available frequency subset of the first frequency group mapping relationship is updated, the updated first frequency group mapping relationship is sent to the second node in the frequency hopping synchronous ad hoc network.
The method according to claim 1 or 6, wherein the sending the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network comprises:

The feedback channel is used to send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network.
The method according to claim 7, wherein the feedback channel is a frequency update domain in a time frame.
The method according to claim 8, wherein the frequency update domain and the synchronization domain in the time frame point to the same node.
The method according to claim 1, further comprising:

According to the updated first frequency grouping mapping relationship, a common frequency hopping pattern is generated.
The method according to claim 10, wherein said generating a common frequency hopping pattern according to the updated first frequency group mapping relationship comprises:

Generate a common sequence frequency hopping sequence according to the shared key;

Generating a common frequency hopping pattern according to the updated first frequency group mapping relationship and the common sequence frequency hopping sequence.
The method according to claim 1, further comprising:

Perform initial settings, including predefined frequency sets and public keys; among them:

The frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset;

The public key is used to generate a common sequence frequency hopping sequence.
An adaptive frequency control method, applied to a second node in a frequency hopping synchronous ad hoc network, includes:

Receiving the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network;

Update the stored second frequency group mapping relationship according to the updated first frequency group mapping relationship;

Generate a common frequency hopping pattern according to the updated second frequency grouping mapping relationship;

Wherein, the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.
The method according to claim 13, wherein the updating the stored second frequency group mapping relationship according to the updated first frequency group mapping relationship comprises:

Perform a logical AND operation on the updated first frequency group mapping relationship and the second frequency group mapping relationship, and use the first available frequency subset and the second frequency in the updated first frequency group mapping relationship Grouping common frequencies in the second available frequency subset in the group mapping relationship, and obtaining the second available frequency subset after the second frequency group mapping relationship is updated;

Add different frequencies in the first available frequency subset and the second available frequency subset to the second unavailable frequency subset of the second frequency group mapping relationship to obtain the second frequency group mapping relationship The updated second unavailable frequency subset;

From the second spare frequency subset of the second frequency group mapping relationship, select frequencies to add to the updated second available frequency subset to obtain the final available frequency subset in the second frequency group mapping relationship; Wherein, the first spare frequency subset of the first frequency group mapping relationship includes the selected frequency.
The method according to claim 14, further comprising:

Performing channel sounding on the updated second unavailable frequency subset;

If the channel detection result indicates that the frequency corresponding to the fourth channel is available, add the frequency corresponding to the fourth channel to the final available frequency subset;

The frequency corresponding to the fourth channel is a frequency in the updated second subset of unavailable frequencies.
The method according to claim 13, wherein the generating a common frequency hopping pattern according to the updated second frequency group mapping relationship and the common sequence frequency hopping sequence comprises:

Generate a common sequence frequency hopping sequence according to the shared key;

Generating a common frequency hopping pattern according to the updated second frequency grouping mapping relationship and the common sequence frequency hopping sequence.
The method according to claim 13, further comprising:

Perform initial settings, including predefined frequency sets and public keys; among them:

The frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset;

The public key is used to generate a common sequence frequency hopping sequence.
An adaptive frequency control device, applied to the first node in a frequency hopping synchronous ad hoc network, includes:

The update module is used to update the stored first frequency group mapping relationship;

The sending module is configured to send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad hoc network, so that the second node can perform the The second frequency group mapping relationship stored in the second node is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.
The apparatus according to claim 18, wherein the update module comprises:

The first update sub-module is used to perform channel detection and update the stored first frequency group mapping relationship according to the channel detection result; and/or

The second update submodule is configured to receive the third frequency group mapping relationship sent by the third node in the frequency hopping synchronous ad hoc network, and update the stored first frequency group mapping relationship according to the third frequency group mapping relationship.
An adaptive frequency control device, applied to a second node in a frequency hopping synchronous ad hoc network, includes:

The receiving module is configured to receive the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network;

The update module is configured to update the stored second frequency group mapping relationship according to the updated first frequency group mapping relationship;

A generating module, configured to generate a common frequency hopping pattern according to the updated second frequency grouping mapping relationship;

Wherein, the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.
The device according to claim 20, wherein the update module comprises:

The first processing submodule is configured to perform a logical AND operation on the updated first frequency group mapping relationship and the second frequency group mapping relationship, and use the first available frequency in the updated first frequency group mapping relationship A subset and a common frequency in the second available frequency subset in the second frequency group mapping relationship, and obtain the second available frequency subset after the second frequency group mapping relationship is updated;

The second processing submodule is configured to add different frequencies in the first available frequency subset and the second available frequency subset to the second unavailable frequency subset of the second frequency group mapping relationship to obtain The second unavailable frequency subset after the updated second frequency group mapping relationship;

The third processing submodule is configured to select frequencies from the second spare frequency subset of the second frequency group mapping relationship and add them to the updated second available frequency subset to obtain the second frequency group mapping relationship The final available frequency subset in the first; wherein, the first spare frequency subset of the first frequency group mapping relationship includes the selected frequency.
A network side device, which is applied to a first node in a frequency hopping synchronous ad hoc network, and includes: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor;

The processor is used to read the program in the memory and execute the following process:

Update the stored mapping relationship of the first frequency group;

The transceiver is configured to send the updated first frequency grouping mapping relationship to the second node in the frequency hopping synchronous ad hoc network, so that the second node can perform the correction according to the updated first frequency grouping mapping relationship The second frequency group mapping relationship stored by the second node is updated; wherein the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.
The device according to claim 22, wherein the processor is further configured to read the program in the memory and execute the following process:

Perform channel detection, and update the stored first frequency group mapping relationship according to the channel detection result; and/or

Receive the third frequency group mapping relationship sent by the third node in the frequency hopping synchronization ad hoc network, and update the stored first frequency group mapping relationship according to the third frequency group mapping relationship.
The device according to claim 23, wherein the processor is further configured to read a program in the memory and execute the following process:

If the channel detection result indicates that the first channel is a damaged channel and the frequency corresponding to the first channel is located in the first available frequency subset or the first candidate frequency subset of the first frequency group mapping relationship, then the second The frequency corresponding to a channel is added to the first unavailable frequency subset of the first frequency group mapping relationship, and the frequency corresponding to the first channel is deleted from the first available frequency subset and/or from the Delete the first candidate frequency subset;

Selecting a frequency from the first spare frequency subset, and adding the selected frequency to the first available frequency subset;

If the channel detection result indicates that the second channel has changed from a damaged channel to an available channel, the frequency corresponding to the second channel in the first unavailable frequency subset is added to the first spare frequency subset.
The device according to claim 23, wherein the processor is further configured to read a program in the memory and execute the following process:

Perform a logical AND operation on the first frequency group mapping relationship and the third frequency group mapping relationship, and use the first available frequency subset of the first frequency group mapping relationship and the third frequency group mapping relationship The common frequencies in the third available frequency subset, obtaining the first available frequency subset after the first frequency group mapping relationship is updated;

Adding different frequencies in the third available frequency subset and the available frequency subset to the first unavailable frequency subset in the first frequency group mapping relationship;

From the first spare frequency subset of the first frequency group mapping relationship, select frequencies to be added to the updated first available frequency subset; wherein, the third spare frequency subset of the third frequency group mapping relationship Including the selected frequency;

Wherein, the updated first frequency group mapping relationship and the third frequency group mapping relationship are consistent.
The device according to claim 24 or 25, wherein the processor is further configured to read a program in the memory and execute the following process:

Performing channel sounding on the updated first unavailable frequency subset;

If the channel detection result indicates that the frequency corresponding to the third channel is available, add the frequency corresponding to the third channel to the updated first subset of available frequencies;

The frequency corresponding to the third channel is a frequency in the updated first subset of unavailable frequencies.
The device according to claim 22, wherein the transceiver is further configured to: in the case where the first available frequency subset of the first frequency group mapping relationship is updated, to the frequency hopping synchronization ad hoc network The second node of sends the updated first frequency group mapping relationship.
The device according to claim 22 or 27, wherein the transceiver is further configured to use the feedback channel to send the updated first frequency group mapping relationship to the second node in the frequency hopping synchronous ad hoc network.
The device according to claim 28, wherein the feedback channel is a frequency update domain in a time frame, and the frequency update domain and a synchronization domain in the time frame point to the same node.
The device according to claim 22, wherein the processor is further configured to read the program in the memory and execute the following process:

According to the updated first frequency grouping mapping relationship, a common frequency hopping pattern is generated.
The device according to claim 30, wherein the processor is further configured to read a program in the memory and execute the following process:

Generate a common sequence frequency hopping sequence according to the shared key;

Generating a common frequency hopping pattern according to the updated first frequency group mapping relationship and the common sequence frequency hopping sequence.
The device according to claim 22, wherein the processor is further configured to read the program in the memory and execute the following process:

Perform initial settings, including predefined frequency sets and public keys; among them:

The frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset;

The public key is used to generate a common sequence frequency hopping sequence.
A network side device, applied to a second node in a frequency hopping synchronous ad hoc network, and includes: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor;

The transceiver is configured to receive the updated first frequency group mapping relationship sent by the first node in the frequency hopping synchronous ad hoc network;

The processor is used to read the program in the memory and execute the following process:

Update the stored second frequency group mapping relationship according to the updated first frequency group mapping relationship;

Generate a common frequency hopping pattern according to the updated second frequency grouping mapping relationship;

Wherein, the updated second frequency group mapping relationship is consistent with the updated first frequency group mapping relationship.
The device according to claim 33, wherein the processor is further configured to read a program in the memory and execute the following process:

Perform a logical AND operation on the updated first frequency group mapping relationship and the second frequency group mapping relationship, and use the first available frequency subset and the second frequency in the updated first frequency group mapping relationship Grouping common frequencies in the second available frequency subset in the group mapping relationship, and obtaining the second available frequency subset after the second frequency group mapping relationship is updated;

Add different frequencies in the first available frequency subset and the second available frequency subset to the second unavailable frequency subset of the second frequency group mapping relationship to obtain the second frequency group mapping relationship The updated second unavailable frequency subset;

From the second spare frequency subset of the second frequency group mapping relationship, select frequencies to add to the updated second available frequency subset to obtain the final available frequency subset in the second frequency group mapping relationship; Wherein, the first spare frequency subset of the first frequency group mapping relationship includes the selected frequency.
The device according to claim 34, wherein the processor is further configured to read the program in the memory and execute the following process:

Performing channel sounding on the updated second unavailable frequency subset;

If the channel detection result indicates that the frequency corresponding to the fourth channel is available, add the frequency corresponding to the fourth channel to the final available frequency subset;

The frequency corresponding to the fourth channel is a frequency in the updated second subset of unavailable frequencies.
The device according to claim 33, wherein the processor is further configured to read a program in the memory and execute the following process:

Generate a common sequence frequency hopping sequence according to the shared key;

Generating a common frequency hopping pattern according to the updated second frequency grouping mapping relationship and the common sequence frequency hopping sequence.
The device according to claim 33, wherein the processor is further configured to read a program in the memory and execute the following process:

Perform initial settings, including predefined frequency sets and public keys; among them:

The frequency set includes: an available frequency subset, an unavailable frequency subset, and a spare frequency subset;

The public key is used to generate a common sequence frequency hopping sequence.
A computer-readable storage medium for storing a computer program that, when executed by a processor, realizes the steps in the method according to any one of claims 1 to 12; or, the computer program is processed The steps in the method according to any one of claims 13 to 17 are implemented when the device is executed.