A communication system and method based on xpon
A communication system and signal technology, applied in transmission systems, optical transmission systems, electromagnetic wave transmission systems, etc., can solve problems such as safe transmission protection, shortening data forwarding time, etc.
Active Publication Date: 2017-02-15
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology
The above-mentioned new optical line terminal OLT device aims at shortening the data forwarding time, but fails to perform safe transmission protection for the transmitted optical signals between the optical line terminal and the optical network unit
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[0086] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.
[0087] In the communication system and method based on XPON in the present invention, encryption is performed at the front end of optical signal transmission, and decryption is performed at the receiving end, which increases the security of the XPON system, and performs power control and equalization on optical signals to prevent optical fiber from being damaged by overheating.
[0088] see figure 1 As shown, it is a functional block diagram of a communication system based on XPON in the present invention, including an OLT optical line terminal 1, an ODN optical distribution network 2, and at least one ONU optical network unit 3, wherein the OLT optical line terminal 1 includes An encryption module 11 , a control module 12 , and a power control module 13 , the ONU optical network unit 3 includes a decrypti...
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The invention discloses a communication system based on the XPON. The communication system comprises an optical line terminal, an optical distribution network and at least one optical network unit. The communication system is characterized in that the optical line terminal converts received Ethernet data signals and performs power control and encryption on optical signals. The optical signals are transmitted to all the optical network units through the optical distribution network, the optical network units perform decryption, power control and balance detection on the received signals and transmit the signals to all terminal user devices. Compared with the prior art, the communication system based on the XPON has the advantages that burnout of optical lines or devices due to overheating is prevented through power control in the transmission process, secondary encryption and balance correction are performed on the signals and secret keys, and therefore safety, validity and reliability of the signals in the transmission process are ensured.
Description
technical field [0001] The present invention relates to a communication system and method for optical fiber transmission, in particular to a communication system and method based on XPON. Background technique [0002] As a new generation of optical fiber access technology, XPON has great advantages in anti-interference, bandwidth characteristics, access distance, maintenance and management, etc., and its application has attracted great attention from global operators. The relatively mature EPON and GPON in XPON optical access technology are composed of OLT at the central office, ONU equipment at the user end and ODN, the passive optical distribution network. [0003] Chinese patent a new type of optical line terminal OLT based on XPON system, publication number: CN202435410U discloses a new type of optical line terminal OLT device, the device includes a main control unit, a cross matrix control unit and a data transceiver unit; the main control unit , including CPU, routing...
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IPC IPC(8): H04Q11/00H04B10/564H04B10/85
Inventor 蒋屹新陈彬李鹏郭晓斌董旭柱许爱东陈华军蒙家晓关泽武
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD