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Title:
CROSS-BAND POWER LINE FREQUENCY RECOGNITION METHOD BASED ON FINE FREQUENCY GRANULARITY
Document Type and Number:
WIPO Patent Application WO/2017/000708
Kind Code:
A1
Abstract:
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.

Inventors:
LU YANG (CN)
LIU WEILIN (CN)
LI JIANQI (CN)
AN CHUNYAN (CN)
GAO HONGJIAN (CN)
ZHAO TAO (CN)
CHU GUANGBIN (CN)
Application Number:
PCT/CN2016/083092
Publication Date:
January 05, 2017
Filing Date:
May 24, 2016
Export Citation:
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Assignee:
GLOBAL ENERGY INTERCONNECTION RES INST (CN)
STATE GRID HEBEI ELECTRIC POWER CO (CN)
STATE GRID CORP CHINA (CN)
International Classes:
H04B3/54; H04L5/00
Domestic Patent References:
WO2013056520A12013-04-25
Foreign References:
CN104954112A2015-09-30
CN103457636A2013-12-18
CN103607224A2014-02-26
CN104641568A2015-05-20
Other References:
LI, JIANQI ET AL.: "Discussions on Key Technologies of New Generation Power Line Carrier Communication", ELECTRIC POWER INFORMATION AND COMMUNICATION TECHNOLOGY, vol. 11, no. 12, 25 February 2014 (2014-02-25), pages 1 - 5, ISSN: 1672-4844
Attorney, Agent or Firm:
AMBOYNA INTELLECTUAL PROPERTY CO.,LTD. (CN)
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