A method for realizing self-adaptive switching of g3-plc network communication frequency band
A G3-PLC, self-adaptive switching technology, applied in the direction of wired transmission system, electrical components, distribution line transmission system, etc., can solve the problems that the communication frequency band and sub-carrier cannot be automatically evaluated and determined, and the communication frequency band and sub-carrier cannot be automatically switched. Achieve the effects of improving communication reliability, reducing labor costs, and increasing the degree of automation
Active Publication Date: 2021-09-07
JIANGSU LINYANG ENERGY CO LTD
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[0005] The purpose of the present invention is to solve the problem that the use of communication frequency bands and subcarriers in the power line environment cannot be automatically evaluated and determined, and the communication frequency bands and subcarriers of communication modules in the G3-PLC network cannot be automatically switched. Adaptive switching method, through the evaluation of the noise level of the power line environment in the G3-PLC network, the communication signal quality of the communication module, the routing topology series and the communication success rate, automatically determine the applicable communication frequency band and sub-carrier, and realize it in CENELEC- Adaptive switching between A and FCC two communication frequency bands and adaptive control of subcarriers
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[0037] Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.
[0038] A method for realizing self-adaptive switching of G3-PLC network communication frequency bands. After the G3-PLC network networking is completed, the PANCoordinator module records the address list of all PAN Device modules in the network according to the G3-PLC standard networking process, and establishes For the evaluation record table of each PAN Device module, the PAN Coordinator module and PANDevice module start to obtain the environment of the frequency points of these subcarriers according to the characteristics of the G3-PLC physical layer for the 36 subcarriers of the CENELEC-A frequency band and the 72 subcarriers ...
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A method for realizing self-adaptive switching of G3-PLC network communication frequency bands. The PAN Coordinator module in the G3-PLC network obtains and records the environmental noise level, communication signal quality level, network topology progression and communication success rate of each communication module in the network , obtain the applicable value of the two communication frequency bands of CENELEC‑A and FCC to the power line environment, configure them step by step for each communication module in the network, and use the delay synchronization control algorithm to control the switching of the hardware filter circuit and the switching of the software protocol stack and Configure parameters to realize adaptive switching of the entire G3‑PLC network communication frequency band and adaptive control of subcarriers. This G3-PLC network communication frequency band adaptive switching method adopts automatic evaluation and automatic switching of specific power line environment communication frequency bands and subcarrier masks, which saves labor costs, reduces network structure complexity, and improves communication reliability.
Description
technical field [0001] The invention relates to the technical field of power line carrier communication, in particular to a method for realizing self-adaptive switching of G3-PLC network communication frequency bands. Background technique [0002] G3-PLC is an OFDM (Orthogonal Frequency Division Multiplexing) power line carrier communication technology that is widely used in low-voltage power collection systems. According to the G3-PLC standard, it can work in the CENELEC-A (European Committee for Electrotechnical Standardization Band A) frequency band , and can work in the FCC (Federal Communications Commission) frequency band, the communication frequency band needs to be selected according to the actual application scenario. According to the provisions of Appendix B of ITU-T G.9901, the first and last subcarrier frequencies of OFDM in the CENELEC-A band are 35.9375kHz and 90.625kHz respectively, and the subcarrier frequency interval is 1.5625kHz. The first and last subcarr...
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IPC IPC(8): H04B3/54
CPCH04B3/542
Inventor 魏华义尹建丰陈健龙葛海磊
Owner JIANGSU LINYANG ENERGY CO LTD