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A method, device, and storage medium for generating frequency-hopping pattern of electric power Internet of Things

A technology of power Internet of Things and frequency hopping patterns, which is applied in the direction of electrical components, transmission systems, instruments, etc., can solve the problem of good randomness of frequency hopping frequency points, small Hamming correlation value of frequency hopping sequences, and pseudo-random frequency hopping patterns that cannot meet the requirements simultaneously. A large number of node access and other issues, to achieve the effect of eliminating interference between power service nodes and large processing gain

Active Publication Date: 2021-06-29
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the traditional pseudo-random frequency hopping pattern cannot satisfy a large number of node access at the same time, the randomness of the frequency point of the frequency hopping is good, and the Hamming correlation value of the frequency hopping sequence is small under any time delay, and the purpose is to provide a power A method, device, and storage medium for generating frequency hopping patterns for the Internet of Things, selecting a frequency hopping sequence that satisfies the maximum Hamming correlation from a base sequence set composed of conventional frequency hopping sequences, and using a shifted frequency hopping sequence interleaving method to generate random access and low-collision frequency hopping pattern, providing secure access to large-scale nodes for the frequency-hopping communication system of the power Internet of Things

Method used

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  • A method, device, and storage medium for generating frequency-hopping pattern of electric power Internet of Things
  • A method, device, and storage medium for generating frequency-hopping pattern of electric power Internet of Things
  • A method, device, and storage medium for generating frequency-hopping pattern of electric power Internet of Things

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Embodiment 1

[0048] Such as figure 1 As shown, a method for generating a frequency hopping pattern of the electric power Internet of Things of the present invention comprises the following steps:

[0049] Step S1, select a plurality of frequency points in the frequency slot set Fq, and randomly combine the plurality of frequency points to obtain a plurality of base sequences with a number of frequency points of L, and the plurality of base sequences with a number of frequency points of L make up a sequence set;

[0050] Wherein, the frequency slot set Fq includes q frequency points available for hopping; the L frequency points in the base sequence include the q frequency points available for hopping, and L ≥ q, where q is a natural number, Since the frequency points in the frequency slot set can be repeatedly selected and each frequency point is selected at least once, the base sequence not only contains all the frequency points in the frequency slot set, but also the number of frequency...

Embodiment 2

[0089] In order to better understand the implementation process of the method of the present invention, an embodiment is provided, when q=7, L=16, M=3, select the base sequence set S ={ S 0 , S 1 , S 2},in

[0090]

[0091] It is easy to verify that the base sequence set S is a frequency hopping sequence set with a maximum Hamming correlation size of Hm = 2, let e = 2, f = 8, then the shift sequence D = (0, 2, 4, ..., 14 ). Then the frequency hopping sequence set R={R can be obtained 0 , R 1 , R 2},in:

[0092]

[0093] It can be verified that the frequency hopping sequence set R is an LHZ frequency hopping sequence set whose LHZ size is Z=1, and its sequence length is 128. The maximum Hamming correlation is 16 inside the LHZ and 30 outside the LHZ.

[0094] It can be seen that not only the maximum Hamming correlation in the low-collision zone LHZ is considered, but also the maximum Hamming correlation outside the low-collision zone LHZ is considered. The num...

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Abstract

The invention discloses a method, device and storage medium for generating a frequency hopping pattern of the electric power Internet of Things. L frequency points are randomly selected in a frequency slot set to form a plurality of base sequences, and each frequency point in the frequency slot set is selected at least once and can be Repeated selection, multiple base sequences form a sequence set, select multiple base sequences that satisfy the maximum Hamming correlation in the sequence set, and obtain the base sequence set; each base sequence in the base sequence set is cyclically shifted to the left to obtain the corresponding f shifts bit sequence; the f shift sequences are interleaved with each other to obtain the frequency hopping sequence corresponding to each base sequence, and the frequency hopping sequence is integrated to obtain the LHZ frequency hopping sequence set, any two frequency hopping sequences in the LHZ frequency hopping sequence set, two The number of frequency point collisions in the LHZ is small, and the number of frequency point collisions outside the LHZ is not too much. After the shift combination, the number of frequency hopping sequences is large enough, and the frequency point randomness is good, which can meet the requirements of the power Internet of things. The frequency hopping communication system provides secure access to large-scale nodes.

Description

technical field [0001] The present invention relates to the technical field of frequency hopping communication, in particular to a method, device and storage medium for generating a frequency hopping pattern for the Internet of Things. Background technique [0002] With the continuous development of the energy Internet and smart grid, a variety of power high-service devices are connected to the power Internet of Things communication network. This kind of communication network has the following characteristics: numerous power service nodes (large-scale access), random access time (random access), and high security of information transmission. In order to ensure the communication security of the power Internet of Things, frequency hopping technology is an optimal communication transmission method. Frequency hopping technology can provide better multiple access capabilities and effectively avoid multi-node mutual interference and malicious interference. This technology has bee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/715G16Y10/35
CPCG16Y10/35H04B1/715H04B2001/7152
Inventor 李世龙张华高艺文龙呈苏学能
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST