Method, device and system for eliminating interference in passive optical network system
A passive optical network and interference elimination technology, applied in the field of communication, can solve problems such as registration failure of optical network units
Inactive Publication Date: 2013-03-20
HUAWEI TECH CO LTD
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[0003] In view of this, the main purpose of the embodiments of the present invention is to provide a method, device, and system for eliminating interference in a passive optical network system, so as to solve the problem that the optical network unit registration fails due to interference signals in the passive optical network system
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[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0029] The optical network unit ONU or the optical network terminal ONT is collectively referred to as the optical network unit below, and the optical network unit ONU is used as an example for description, but it is not limited to the ONU, and is also applicable to the ONT.
[0030] See figure 1 , figure 1 It is a flowchart of a method for eliminating interference in a passive optical network in an embodiment of the present invention.
[0031] In step S101, when the optical line terminal OLT registers, it receives an optical signal, and obtains a characteristic value of the optical signal through measurement, wherein the characteristic value of the optical signal includes: the intensity value of the optical signal, the optical signal The c...
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A method, an equipment and a system for eliminating interference in passive optical network are provided. The method provided by the present invention includes: receiving an optical signal and measuring the characteristic value of the optical signal while registering; judging the optical signal is an interference signal or an optical signal transmitted by an optical network unit, according to the prestored judgment criteria of the optical signal and the characteristic value of the optical signal; registering the optical network unit if the optical signal is an optical signal which is transmitted by an optical network unit; not processing for the interference signal if the optical signal is an interference signal. The present invention solves the problem that the optical network unit is failure to register in passive optical network system, which is caused by the interference signal, so as to the process of detecting the interference signal becomes simple, the precise ratio is improved, and the influence to the passive optical network system by the interference signal is avoided.
Description
technical field [0001] The invention relates to network technology in the communication field, and specifically refers to a method, device and system for eliminating interference in a passive optical network. Background technique [0002] The general passive optical network (Passive Optical Network, PON for short) technology is a point-to-multipoint optical access technology. The PON network consists of an Optical Line Terminal (OLT for short), an optical splitter, an Optical Network Unit (ONU for short), and optical fibers connected to each device. In the PON network architecture in the prior art, the OLT is used as a central office device, and is connected to an optical splitter through a backbone optical fiber, and the optical splitter is connected to each ONU through a separate branch optical fiber. In the PON network, the transmission direction from OLT to ONU is called downlink, which is transmitted through 1490nm wavelength optical fiber; the transmission direction f...
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IPC IPC(8): H04Q11/00H04B10/27
CPCH04B10/27
Inventor 杨素林殷锦蓉徐之光
Owner HUAWEI TECH CO LTD