发明名称 |
CROSS-BAND POWER LINE FREQUENCY RECOGNITION METHOD BASED ON FINE FREQUENCY GRANULARITY |
摘要 |
The present invention relates to a cross-band power line frequency recognition method based on a fine frequency granularity, comprising: establishing a power line communication (PLC) system model; dividing an operating frequency into a low frequency, an intermediate frequency and a high frequency, and acquiring, according to fine frequency granularity features, a low-frequency fine frequency granularity subband, an intermediate-frequency fine frequency granularity subband and a high-frequency fine frequency granularity subband; measuring power line channel noise of a master station and a slave station; calculating power line channel attenuation of an uplink and a downlink; calculating a link quality indicator (LQI) of the uplink and the downlink; and setting an LQI threshold, acquiring an available fine frequency granularity subband, and performing spectrum aggregation on the available fine frequency granularity subband. The present invention can perform recognition of a fine frequency granularity respectively on different bands of low frequency, intermediate frequency and high frequency by cross-band expansion of PLC frequency resources, so that the PLC can adequately search for a communication frequency and establish a stable communication link under extremely adverse channel conditions. |
申请公布号 |
WO2017000708(A1) |
申请公布日期 |
2017.01.05 |
申请号 |
WO2016CN83092 |
申请日期 |
2016.05.24 |
申请人 |
GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE;STATE GRID HEBEI ELECTRIC POWER COMPANY;STATE GRID CORPORATION OF CHINA |
发明人 |
LU, Yang;LIU, Weilin;LI, Jianqi;AN, Chunyan;GAO, Hongjian;ZHAO, Tao;CHU, Guangbin |
分类号 |
H04B3/54;H04L5/00 |
主分类号 |
H04B3/54 |
代理机构 |
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代理人 |
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