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)
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:
Assignee:
GLOBAL ENERGY INTERCONNECTION RES INST (CN)
STATE GRID HEBEI ELECTRIC POWER CO (CN)
STATE GRID CORP CHINA (CN)
STATE GRID HEBEI ELECTRIC POWER CO (CN)
STATE GRID CORP CHINA (CN)
International Classes:
H04B3/54; H04L5/00
Domestic Patent References:
WO2013056520A1 | 2013-04-25 |
Foreign References:
CN104954112A | 2015-09-30 | |||
CN103457636A | 2013-12-18 | |||
CN103607224A | 2014-02-26 | |||
CN104641568A | 2015-05-20 |
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)
Download PDF: