Passive optical network, coding and decoding determination method and device

A technology of passive optical network and coding method, which is applied in the direction of selection device, multiplexing system selection device, digital transmission system, etc., can solve the problem of inflexible coding and decoding methods of uplink and downlink channels, and achieve increased flexibility, Addressing Inflexible Effects

Active Publication Date: 2019-05-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a passive optical network, a codec determination method and device, to at least solve the problem of inflexible uplink and downlink channel codec methods in the related art

Method used

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  • Passive optical network, coding and decoding determination method and device
  • Passive optical network, coding and decoding determination method and device
  • Passive optical network, coding and decoding determination method and device

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Embodiment 1

[0041] An embodiment of the present invention provides a passive optical network, wherein the passive optical network may be a digital Ethernet passive optical network (Ethernet Passive Optical Network, EPON for short) / Gigabit-Capable PON , referred to as GPON), specifically may be the introduction of 50Gbps EPON / GPON system, but not limited thereto.

[0042] figure 1 is a schematic structural diagram of a passive optical network provided according to a preferred embodiment of the present invention, such as figure 1 As shown, the passive optical network provided by the embodiment of the present invention includes: a first switch 10 and a second switch 12; wherein the first switch 10 is used to control the downlink encoder 102 and the downlink encoder 102 located in the downlink channel of the passive optical network PON The working status of the downlink decoder 104; the second switch 12 is used to control the working status of the uplink encoder 122 and the uplink decoder 12...

Embodiment 2

[0061] The embodiment of the present invention also provides a method embodiment of a method for determining a codec, which embodiment can be applied to the passive optical network described in Embodiment 1 above, figure 2 is a schematic flowchart of a method for determining a codec according to an embodiment of the present invention, such as figure 2 As shown, the method includes:

[0062] Step S202, determining the state of the first switch and the state of the second switch in the passive optical network;

[0063] Step S204, determine the encoding mode and decoding mode in the downlink channel according to the state of the first switch, and determine the encoding mode and decoding mode in the uplink channel according to the state of the second switch.

[0064] Through the above method, since the first switch and the second switch are added to the above passive optical network, the state of the first switch and the state of the second switch determine the codec mode in th...

Embodiment 3

[0085] In this embodiment, a device for determining a codec is also provided, and the device is used to implement the above embodiments and preferred implementation modes, and those that have been described will not be repeated. As used below, the term "module" may be a combination of software and hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0086] image 3 is a structural block diagram of a device for determining a codec according to an embodiment of the present invention, such as image 3 As shown, the device includes:

[0087] The first determination module 32 is configured to determine the state of the first switch and the state of the second switch in the passive optical network;

[0088] The second determination module 34 is connected with the above-mentioned...

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Abstract

The invention provides a passive optical network, a coding and decoding determination method and a coding and decoding determination device. Wherein the passive optical network comprises a first switch and a second switch; Wherein the first switch is used for controlling the working states of a downlink encoder and a downlink decoder in a downlink channel of a passive optical network (PON); And the second switch is used for controlling the working states of the uplink encoder and the uplink decoder in the uplink channel of the PON. According to the invention, the problem that the coding and decoding modes of uplink and downlink channels are not flexible enough in the prior art is solved.

Description

technical field [0001] The present invention relates to the field of optical communication, in particular to a passive optical network, a codec determination method and a device. Background technique [0002] The Ethernet Passive Optical Network (EPON for short) / Gigabit-Capable PON (GPON for short) uplink channel and downlink channel of the related art both use RS(255,223) or RS(255,239 ) encoding method, and the parameters such as the code word length and code rate of the uplink channel and the downlink channel are the same, wherein, RS(255,223) means that the code word length after encoding is 255, and the number of information bits before encoding is 223, Similarly, RS(255,239) indicates that the code word length after encoding is 255, and the number of information bits before encoding is 239. However, with the introduction of Low Density Parity Check-Code (LDPC) coding in 50Gbps EPON / GPON systems, the length of LDPC codewords can be flexibly adjusted within a certain ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04Q11/00
CPCH04L1/00H04Q11/00
Inventor 刘铮卢刘明郭勇黄新刚张伟良袁立权
Owner ZTE CORP
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