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Method for effectively reducing GPON ONU burst time

A technology of time and light emission, which is applied in multiplexing system selection devices, electrical components, selection devices, etc., can solve the problems of poor performance adaptability, low adaptability, shortening GPONONU burst time, etc. To achieve the effect of expanding the scope, reducing the requirements of relevant indicators, and reducing costs

Inactive Publication Date: 2018-01-16
SICHUAN TIANYI COMHEART TELECOM
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a method for effectively shortening the burst time of GPON ONU, solve the problem that the current BOB receiving circuit is not high in adaptability to optical devices with different performances, and overcome the problem of poor performance Relatively poor adaptability between the emitting light device and the driving circuit, thus shortening the burst time of GPON ONU

Method used

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  • Method for effectively reducing GPON ONU burst time
  • Method for effectively reducing GPON ONU burst time

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Embodiment Construction

[0020] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0021] The physical layer overhead (Tplo) time is used to implement five physical processes in PON, which are: laser on / off time, timing drift tolerance, power level recovery, clock recovery, burst delimitation start. The exact physical layer timing allocated to these functions is determined partly by constraints and partly by implementation opportunities.

[0022] Tplo can be divided into three parts according to the requirements of ONU data mode. In simple terms, these times can be divided into guard time (Tg), lead time (Tp) and demarcation time (Td). During Tg, the ONU transmits no more than the nominal "0" power level. In Tp, ONU sends a preamble with the maximum transmission power to realize fast power control and clock recovery fun...

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Abstract

The invention discloses a method for effectively reducing GPON ONU burst time. The method comprises the following steps of S01, opening Telnet login and opening a register read / write command; S02, adjusting an optical power transmitting register, judging whether a value reaches the minimum optical power target value or not, entering a next step if the value reaches the minimum optical power targetvalue, otherwise, carrying out adjustment continuously; S03, translating a mod lookup table, judging whether an extinction ratio reaches a target value or not, entering the next step if the extinction ratio reaches the target value, otherwise, adjusting the extinction ratio continuously; and S04, finishing the method. According to the method, under the condition of not modifying a hardware circuit, the problem that the ONU burst time is insufficient is effectively processed through adoption of a software method. A range is expanded when optical devices BOSAs are selected for a product. Related index demands for a transmitting optical device are reduced, the cost is reduced, and the risk resulting from the fact that the product depends on the unique device is reduced.

Description

technical field [0001] The invention relates to the field of optoelectronics, in particular to a method for effectively shortening the burst time of a GPON ONU. Background technique [0002] The development of FTTx in China, compared with Japan, South Korea and the United States, China's fiber access is still in the golden initial stage. With the improvement of the technical level and the large-scale listing of new optical devices and optical cables, the cost of optical communication has been greatly reduced. At the same time, due to the promotion of a variety of services that require high-speed broadband data transmission, including IPTV (interactive network television), digital conferencing, interactive games, video telephony, telemedicine, distance learning, online shopping, and Internet of Things and big data based on smart cities With the rise and promotion of cloud computing, users' requirements for broadband have increased significantly, and the requirements for comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00
Inventor 唐兴刚王旭东何芯锐
Owner SICHUAN TIANYI COMHEART TELECOM
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