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Gigabit passive optical network system and data transmitting and receiving method thereof

A technology of passive optical network and receiving method, applied in the field of gigabit passive optical network system and its data transmission and reception, can solve the problem of large amount of calculation of GEM frame and the like

Active Publication Date: 2011-05-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a gigabit passive optical network system and its data sending and receiving method to solve the problem in the prior art that when the HEC check result of a certain GEM frame is wrong, the subsequent GEM frame is analyzed and delimited The problem of too much calculation

Method used

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  • Gigabit passive optical network system and data transmitting and receiving method thereof
  • Gigabit passive optical network system and data transmitting and receiving method thereof
  • Gigabit passive optical network system and data transmitting and receiving method thereof

Examples

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example 1

[0099] In the GPON system, the OLT and the ONU group the GEM frames in the payload field of the GTC frames in the GPON system. The GPON system defines a GEM frame group identification information for identifying the starting position of the GEM frame group, and the GEM frame group identification information can be represented by a character string 0xB6BAE05531 (the value of this character string is just an example of the present embodiment, and can be Select a string of other values ​​as the GEM frame group identification information). In the upstream direction, the ONU sends the GEM frame, the OLT receives and parses the GEM frame and in the downstream direction, the OLT sends the GEM frame, and the ONU receives and parses the GEM frame as follows:

[0100] Step 1: The sender groups the GEM frames in the payload field of the GTC frame, and each group can include one or more GEM frames, such as Figure 4 As shown, when the sender sends a group of GEM frames, the string 0xB6BA...

example 2

[0103] In the GPON system, the OLT and the ONU group the GEM frames of the payload field in the GTC frame in the GPON system. The GPON system defines a GEM frame group identification information for identifying the end position of the GEM frame group, and the GEM frame group identification information can be represented by a character string 0xE056BA531B (the value of this character string is just an example of the present embodiment, and can be selected as required The string of other values ​​is used as the GEM frame group identification information). In the upstream direction, the ONU sends the GEM frame, the OLT receives and parses the GEM frame and in the downstream direction, the OLT sends the GEM frame, and the ONU receives and parses the GEM frame as follows:

[0104] Step 1: The sender groups the GEM frames of the payload field in the GTC frame, and each group includes one or more GEM frames, such as Figure 5 As shown, when the sender sends a group of GEM frames, th...

example 3

[0107] In the GPON system, the OLT and the ONU group the GEM frames of the payload field in the GTC frame in the GPON system. The GPON system defines a start information for identifying the start position of the GEM frame group, and defines an end information for identifying the end position of the GEM frame group, and the start information can be represented by a character string 0xB6BAE05531 (the character string's Value is just an example of the present embodiment, the character string of other values ​​can be selected as starting information as needed); Select a string of other values ​​as the end message). In the upstream direction, the ONU sends the GEM frame, the OLT receives and parses the GEM frame and in the downstream direction, the OLT sends the GEM frame, and the ONU receives and parses the GEM frame as follows:

[0108] Step 1: The sender groups the GEM frames of the payload field in the GTC frame, and each group includes one or more GEM frames, such as Figure...

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Abstract

The present invention provides a data transmitting and receiving method for Gigabit passive optical network system, comprising the steps that: a transmitting party divides a GEM frame of a payload region in a GTC frame into a plurality of GEM frame sets, wherein each GEM frame set comprises one or more GEM frame, and GEM frame set identification information is added in part or whole of the plurality of GEM frames; the transmitting party transmits the GTC frame; a receiving party delimits the GEM frame sets according to the received GEM frame set identification information in the GTC frame. The present invention further provides a Gigabit passive optical network system. The method of the present invention solves the problem that the calculated amount for analyzing and delimiting the GEM frame is too large in the prior art when a HEC correction result of a certain GEM frame is wrong, so that the calculated amount is reduced greatly, a defect regarding a wrong delimiting as a right delimiting in the prior art, and the accuracy rate of analyzing and delimiting is effectively improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a gigabit passive optical network system and a data sending and receiving method thereof. Background technique [0002] Gigabit-Capable Passive Optical Network (GPON) technology is an important technical branch of the passive optical network (PON) family. Similar to other PON technologies, GPON is also a point-to-multipoint topology passive optical access technology. The topology of GPON system is as follows: figure 1 As shown, GPON is composed of an optical line terminal (Optical Line Terminal, OLT) on the office side, an optical network unit (Optical Network Unit, ONU) on the user side, and an optical distribution network (Optical Distribution Network, ODN). Usually, point-to-multipoint network structure. ODN is composed of passive optical components such as single-mode optical fibers, optical splitters, and optical connectors, and provides optical transmission media for the physic...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L1/00
Inventor 张伟良耿丹
Owner ZTE CORP
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