An anti-interference communication networking method combining networking strategy and frequency planning

Abstract

The present application relates to a kind of interference communication networking method of combination networking strategy and frequency planning, including determining the strategy of constructing subnet according to networking principle, realize tentative networking;Through the frequency point selection algorithm based on greed, solve frequency point combination, verify whether it meets the quantity of tentative networking, according to the corresponding processing of verification result;Set networking evaluation index, sort each networking index score, remove networking requirement from small to large in turn, until the number of networking is in the most frequency point allocation range;According to the initial condition of frequency planning and networking strategy, the frequency interval is divided, and the reasonable allocation of communication equipment is realized according to the principle of selecting and verifying by three-order intermodulation interference verification algorithm.The present application can effectively solve the problems such as co-channel interference, self-interference and three-order intermodulation interference in complex communication networking by efficiently utilizing frequency band resources, combining the designed communication networking strategy and frequency planning method, and improves the flexibility and adaptability of communication networking in complex electromagnetic environment.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to an anti-interference communication networking method that combines networking strategies and frequency planning. Background Technology

[0002] In network-centric information and communication environments, electromagnetic distribution is often complex and variable. Whether in civilian network information communication or military applications such as combat communication, reconnaissance and sensing, and secure transmission, the effective transmission and utilization of information between communication nodes is not only closely related to people's daily lives but also a key link in military information warfare. However, in actual communication environments, factors such as weather, interference, and attenuation often make the electromagnetic environment more complex, affecting the transmission effect of signal communication. Maintaining signal communication capabilities in many scenarios requires not only the investment of more communication equipment but also the avoidance of the impact of complex electromagnetic environments on communication links. This often places higher demands on the functionality and performance of communication equipment, thereby increasing communication costs. At the same time, complex electromagnetic environments undoubtedly increase the difficulty of communication networking.

[0003] Currently, the mainstream communication anti-interference networking methods mainly focus on the performance of the equipment itself and frequency modulation methods, such as frequency hopping and spread spectrum communication. Although these methods can achieve certain results, they are too dependent on the performance of hardware equipment and have problems such as poor communication performance after networking in complex electromagnetic environments and complex communication data sorting and processing.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an interference communication networking method that combines networking strategy and frequency planning, thereby solving the deficiencies of the existing methods.

[0006] The objective of this invention is achieved through the following technical solution: a method for interfering communication networking that combines networking strategies and frequency planning, the networking method comprising:

[0007] S1. Obtain the number of communication devices that meet the communication requirements of a certain type of communication network under interference environment, and determine the strategy for building subnets according to the networking principle to realize the proposed network;

[0008] S2. Using a greedy frequency selection algorithm, find the combination of frequencies that maximizes the number of frequencies required to be allocated within a specified frequency range without co-channel interference and third-order intermodulation interference, and verify whether the required number of frequencies for the proposed network is met. If it is met, determine the networking strategy according to the proposed networking result and execute step S4. If it is not met, execute step S3.

[0009] S3. Set network evaluation indicators, sort the scores of each network indicator, and remove network requirements in order from small to large until the number of networks is within the range of the largest frequency point allocation, then the network strategy can be determined.

[0010] S4. Divide the frequency range according to the initial conditions of frequency planning and the networking strategy, and realize the reasonable allocation of communication equipment frequency under the premise of non-co-frequency self-interference, non-co-frequency mutual interference and non-third-order intermodulation interference through the third-order intermodulation interference verification algorithm according to the principle of selection and verification.

[0011] The strategy for constructing subnets based on networking principles, and the implementation of the proposed network, includes:

[0012] Determine whether the current communication network needs to build a subnet based on the first networking principle;

[0013] The measurement of the subnets in the network is planned according to the second network principle;

[0014] The strategy for constructing subnets is determined based on the third networking principle, and the proposed network is realized.

[0015] The first networking principle includes: if it is a sub-network, then the number of communication nodes required for this type of communication network remains unchanged compared to the sub-network;

[0016] The second networking principle includes: when this type of communication network is interfered with, the number of radio stations must be distributed to the maximum extent possible across the various communication subnets after the main network;

[0017] The third networking principle includes: while satisfying the first and second networking principles, minimizing networking to reduce the difficulty of subsequent frequency planning.

[0018] The set network evaluation index includes: constructing an index Escore = gN / q to evaluate the network score based on the importance score g, distribution density q and number of communication networks N of each network. When the proposed network requirements cannot be met, the network is sorted according to the index, and the network is removed in order from the lowest score to the highest score, until the number of networks is within the maximum number of networks that can be formed in the frequency point allocation.

[0019] The content of verifying the network configuration using a greedy frequency selection algorithm includes:

[0020] A1. Solve for the set of available frequency points within a specified frequency range using the smallest unit of frequency allocation, and select i frequency points from the set of available frequency points for combination;

[0021] A2. For each combination, traverse the current point and calculate the difference between the current point and each point in the selected point set select_point. Determine whether the difference is in the difference set dev_list. Add the points that meet the requirements to the selected point set select_point.

[0022] A3. Repeat step A2 until all combinations have been traversed and the maximum number of networks that can be formed within the specified frequency range is obtained.

[0023] The S4 step specifically includes the following:

[0024] Based on the determined actual number of networks n, the specified communication network frequency range is divided into n intervals, and the available frequency points of each interval are obtained;

[0025] Following the principle of selecting and verifying simultaneously, a frequency point is randomly selected from the first and second frequency point intervals to form a frequency point set {f1, f2}, and starting from the third frequency point interval, a frequency point f3 is randomly selected to form a frequency point set {f1, f2, f3}.

[0026] The verification is performed using a third-order intermodulation interference verification algorithm. Frequency points that do not meet the requirements are reselected until a frequency point set {f1, f2, f3, ..., fn} is obtained, thus completing the selection of communication frequencies.

[0027] The verification using the third-order intermodulation interference verification algorithm specifically includes the following:

[0028] The selected frequency points are combined in pairs, the difference between the combinations is calculated, and the difference results are judged.

[0029] If the difference results contain the same value, it indicates that there is intermodulation interference in the selected frequency point set, and the condition is not met.

[0030] If no identical values ​​are found in the difference results, it means that the selected frequency point set meets the basic requirements of current communication, and the third-order intermodulation verification is completed.

[0031] The present invention has the following advantages:

[0032] 1. By efficiently utilizing frequency band resources and combining the designed communication networking strategy and frequency planning method, it can effectively solve problems such as co-channel interference, self-interference, and third-order intermodulation interference in complex communication networks. At the same time, it has a certain anti-interference capability, improving the flexibility and adaptability of communication networks in complex electromagnetic environments.

[0033] 2. By utilizing network principles, strategies, and frequency planning methods, frequency band resources are utilized to the maximum extent to achieve an information communication network with a certain degree of anti-interference capability. This breaks the limitations on the performance requirements of communication equipment and provides flexible and efficient frequency planning capabilities. Even in harsh electromagnetic environments, it can still maintain most of the internal communication within the network. Compared with existing technologies, the cost of networking and anti-interference is lower and more practical. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the process of the present invention;

[0035] Figure 2 This is a schematic diagram of the proposed network formation process in this invention;

[0036] Figure 3 This is a schematic diagram of the communication network verification process in this invention;

[0037] Figure 4 This is a schematic diagram of the greedy frequency selection algorithm processing flow in this invention;

[0038] Figure 5 This is a schematic diagram of the frequency point planning and selection process in this invention;

[0039] Figure 6 This is a schematic diagram of the third-order intermodulation verification algorithm in this invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of this application provided below with reference to the accompanying drawings is not intended to limit the scope of protection of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The present invention will be further described below with reference to the accompanying drawings.

[0041] like Figure 1As shown, this invention specifically relates to an anti-interference communication networking method that combines networking strategies and frequency planning. By overcoming hardware limitations, it designs networking strategies and plans frequencies based on communication characteristics and networking requirements to achieve good communication in complex electromagnetic environments. The method mainly consists of two parts: network design and frequency planning and selection. In network design, subnets are constructed according to the three principles of networking to confirm the proposed networking strategy and scheme. Then, a greedy frequency selection algorithm is used for network verification and optimization. Finally, frequency planning and selection are performed through frequency interference verification. Specifically, it includes the following:

[0042] Step 1: First, calculate the number of communication devices that meet the communication requirements of each type of communication network under interference conditions;

[0043] Step 2: According to the networking principle ①: If there is a subnet, the number of communication nodes required for this type of network cannot be changed compared to no subnet. Therefore, determine whether the current communication network needs to build a subnet.

[0044] Step 3: Based on networking principle ②: When a certain type of communication network is interfered with, the number of radio stations should be distributed as much as possible among the various communication subnets after the subnet (that is, to interfere with a certain number of communication devices in this type of network, it is necessary to interfere with more than two subnets to give full play to the role of the subnets). Therefore, the subnet strategy for networking is planned.

[0045] Step 4: According to networking principle ③: Under the premise of satisfying principle ① and principle ②, the number of networks should be minimized to reduce the difficulty of subsequent frequency planning. Therefore, the strategy for building subnets is determined to realize the proposed network.

[0046] Step 5: Using a "greedy frequency selection algorithm", find the combination of the most frequency points that meets the requirement of "allocating frequency points without co-channel interference and third-order intermodulation interference within the specified frequency range" (i.e., find the upper limit of the number of frequency points to be selected). This is used to verify whether the number of proposed networks can be reached. If the number requirement is met, determine the networking strategy according to the proposed networking results and proceed to Step 7. If the number requirement is not met, proceed to Step 6.

[0047] Step 6: Based on the importance, distribution density, and number of such communication networks, design network evaluation indicators, sort the scores of each network indicator, and remove network requirements in ascending order until the number of networks is within the maximum frequency allocation range, then determine the network strategy.

[0048] Step 7: Based on the initial conditions of frequency planning and the networking strategy, divide the frequency range and, in accordance with the principle of "selecting and verifying simultaneously", use the third-order intermodulation interference verification algorithm to achieve reasonable allocation of communication equipment frequencies under the premise of non-co-frequency self-interference, non-co-frequency mutual interference, and non-third-order intermodulation interference.

[0049] like Figure 2As shown, in the communication networking task, the number of communication devices that meet the communication requirements of each type of communication network is first determined. Next, based on principle ①, it is determined whether a subnet needs to be built within this type of communication network. Then, based on principles ② and ③, the number of subnets to be built is confirmed. Finally, the structure of this type of communication network and the communication subnets is determined, and the proposed networking strategy is confirmed.

[0050] like Figure 3 As shown, the proposed networking strategy is validated for its rationality using a greedy frequency selection algorithm to determine the maximum number of networks T that can be formed within a specified frequency. If the proposed number of networks N is less than the maximum number of networks T, the proposed networking strategy is considered rational. Otherwise, by combining the importance score g of each network, the distribution density q (number of communication devices n / activity range s of a certain type of network), and the number of communication networks N, an index for evaluating the networking score is constructed.

[0051] Escore = gN / q

[0052] When the requirements for the proposed network cannot be met, the network is ranked according to the index, and a certain type of network is removed from the communication network with the lowest score to the highest score, until the number of networks is within the maximum number of networks T that can be formed in the frequency point allocation.

[0053] like Figure 4 As shown, the set of available frequency points within a specified frequency range is determined using the smallest unit of frequency allocation. i frequency points from the available frequency point set are combined (i∈[T,n]). For each combination, the difference between the current point and each point in the selected point set `select_point` is calculated, and it is determined whether the difference is in the difference set `dev_list`. Points that meet the requirements are added to the selected point set `select_point`. This process is repeated until all combinations are traversed, ultimately yielding the maximum number of networks T that can be formed within the specified frequency range.

[0054] like Figure 5 As shown, based on the determined actual number of network nodes n, to avoid self-interference, the specified communication network frequency range is divided into n intervals, and the available frequency points in each interval are calculated. To avoid mutual interference, a third-order intermodulation interference verification algorithm is designed. Following the principle of "selecting and verifying simultaneously," a frequency point {f1, f2} is randomly selected from the first and second frequency point intervals, and a frequency point f3 is randomly selected from the third frequency point interval, forming {f1, f2, f3}. The third-order intermodulation interference verification algorithm is used for verification. Frequency points that do not meet the requirements are reselected until {f1, f2, f3, ..., fn}, a total of n frequency points, are selected, thus completing the selection of the communication frequency.

[0055] like Figure 6As shown, according to the definition of third-order intermodulation interference, the selected frequency points are combined in pairs, the difference between the combinations is calculated, and the difference results are judged. If the difference results show the same value, it means that there must be intermodulation interference in the selected frequency point set and the condition is not met. Otherwise, it means that the selected frequency point set meets the basic requirements of the current communication and the third-order intermodulation verification is completed.

[0056] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and improvements, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An anti-interference communication networking method combining networking strategies and frequency planning, characterized in that: The networking method includes: S1. Obtain the number of communication devices that meet the communication requirements of a certain type of communication network under interference environment, and determine the strategy for building subnets according to the networking principle to realize the proposed network; S2. Using a greedy frequency selection algorithm, find the combination of frequencies that maximizes the number of frequencies required to be allocated within a specified frequency range without co-channel interference and third-order intermodulation interference, and verify whether the required number of frequencies for the proposed network is met. If it is met, determine the networking strategy according to the proposed networking result and execute step S4. If it is not met, execute step S3. S3. Set network evaluation indicators, sort the scores of each network indicator, and remove network requirements in order from small to large until the number of networks is within the range of the largest frequency point allocation, then the network strategy can be determined. S4. Divide the frequency range according to the initial conditions of frequency planning and the networking strategy, and realize the reasonable allocation of communication equipment frequency under the premise of non-co-frequency self-interference, non-co-frequency mutual interference and non-third-order intermodulation interference by using the third-order intermodulation interference verification algorithm according to the principle of selection and verification. The content of verifying the network configuration using a greedy frequency selection algorithm includes: A1. Solve for the set of available frequency points within a specified frequency range using the smallest unit of frequency allocation, and select i frequency points from the set of available frequency points for combination; A2. For each combination, traverse the current point and calculate the difference between the current point and each point in the selected point set select_point. Determine whether the difference is in the difference set dev_list. Add the points that meet the requirements to the selected point set select_point. A3. Repeat step A2 until all combinations have been traversed and the maximum number of networks that can be formed within the specified frequency range is obtained.

2. The anti-interference communication networking method combining networking strategy and frequency planning according to claim 1, characterized in that: The strategy for constructing subnets based on networking principles, and the implementation of the proposed network, includes: Determine whether the current communication network needs to build a subnet based on the first networking principle; The subnetting strategy is planned according to the second networking principle; The strategy for constructing subnets is determined based on the third networking principle, and the proposed network is realized.

3. The anti-interference communication networking method combining networking strategy and frequency planning according to claim 2, characterized in that: The first network principle includes: if there is a subnet, the number of communication nodes required for this type of network cannot be changed compared to a network without subnets; The second networking principle includes: when this type of communication network is interfered with, the number of radio stations must be distributed to the maximum extent possible across the various communication subnets after the main network; The third networking principle includes: while satisfying the first and second networking principles, minimizing networking to reduce the difficulty of subsequent frequency planning.

4. The anti-interference communication networking method combining networking strategy and frequency planning according to claim 1, characterized in that: The set network evaluation index includes: constructing an index Escore=gN / q to evaluate the network score based on the importance score g, distribution density q and number of communication networks N of each network. When the proposed network requirements cannot be met, the network is sorted according to the index, and the network is removed in order from the lowest score to the highest score, until the number of networks is within the maximum number of networks that can be formed in the frequency point allocation.

5. The anti-interference communication networking method combining networking strategy and frequency planning according to claim 1, characterized in that: The S4 step specifically includes the following: Based on the determined actual number of networks n, the specified communication network frequency range is divided into n intervals, and the available frequency points of each interval are obtained; Following the principle of selecting and verifying simultaneously, a frequency point is randomly selected from the first and second frequency point intervals to form a frequency point set {f1, f2}, and starting from the third frequency point interval, a frequency point f3 is randomly selected to form a frequency point set {f1, f2, f3}. The verification is performed using a third-order intermodulation interference verification algorithm. Frequency points that do not meet the requirements are reselected until a frequency point set {f1, f2, f3, ..., fn} is obtained, thus completing the selection of communication frequencies.

6. The anti-interference communication networking method combining networking strategy and frequency planning according to claim 5, characterized in that: The verification using the third-order intermodulation interference verification algorithm specifically includes the following: The selected frequency points are combined in pairs, the difference between the combinations is calculated, and the difference results are judged. If the difference results contain the same value, it indicates that there is intermodulation interference in the selected frequency point set, and the condition is not met. If no identical values ​​are found in the difference results, it means that the selected frequency point set meets the basic requirements of current communication, and the third-order intermodulation verification is completed.

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