Service data transmission method and system

A technology of business data and sending method, which is applied in the field of communication, and can solve problems such as inability to transmit business data and high reliability requirements of serial port business data, etc.

Active Publication Date: 2010-11-17
SHENZHEN HONGDIAN TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a method for sending business data, which aims to sol

Method used

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  • Service data transmission method and system
  • Service data transmission method and system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] figure 1 It shows the implementation process of the service data sending method provided by the embodiment of the present invention, and its specific steps are as follows:

[0036] In step S101, the first encapsulation is performed on the service data read by the ONU from the serial port according to the pre-extended OAM protocol.

[0037] In the embodiment of the present invention, the original OAM protocol is extended in advance, and the extension field is the code field. The specific embodiment will be described below, and details will not be repeated here.

[0038] In step S102, the service data after the first encapsulation is encapsulated for the second time according to the OAM protocol, so that the service data after the first encapsulation exists in the form of OAMPDU.

[0039] In step S103, the service data after the second encapsulation is sent to the OLT, so that the OLT forwards the service data after the second encapsulation to the remote server.

[0040...

Embodiment 2

[0042] In the embodiment of the present invention, the code field of the original OAM protocol is extended, so that the extended OAM protocol can encapsulate service data, so that the encapsulated service data can be reliably transmitted to the OLT.

[0043] The original OAM protocol includes a 6-byte target address MAC, a 6-byte source address MAC, a 2-byte length / type field, a 1-byte subtype field, a 2-byte flag field, and a 1-byte The code field, the variable-length Data / Pad field, and the 4-byte FCS field. In the code field, 0x00, 0x01, 0x02, 0x03, 0x04, and 0xFE have been allocated to 6 OAM frames, corresponding to status information, Event report, variable acquisition for MIB library variable operation, variable return, OAMPDU control and OUI for switching back control, wherein, in the embodiment of the present invention, the OAM protocol can be extended by using 0xFD in the code field, the extended The code field is specific as figure 2 shown.

Embodiment 3

[0045] image 3 The implementation process of sending the service data after the second encapsulation to the OLT provided by the embodiment of the present invention is shown, and the specific steps are as follows:

[0046] In step S301, the service data packet carrying the corresponding sequence number is read from the pre-generated buffer and sent, and the sequence number exists in the pre-built sequence number window.

[0047] In step S302, it is judged whether the service data packet confirmation information fed back by the OLT is received within WinTimeout (representing the data timeout time in a sequence number window), if so, step S303 is executed, otherwise step S304 is executed.

[0048] In step S303, when the confirmation information of the service data message is received, the service data message is deleted from the buffer, and at the same time, the corresponding sequence number carried by the service data message is deleted from the sequence number window delete. ...

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Abstract

The invention is applied to the technical field of communication, and provides a service data transmission method and a service data transmission system. The method comprises the following steps of: performing primary packaging on service data read from a serial port by an optical network unit (ONU) according to a pre-expanded operation, administration and maintenance (OAM) protocol; performing secondary packaging on the service data subjected to the primary packaging according to the OAM protocol, so that the service data subjected to the primary packaging exists in a form of operation, administration and maintenance protocol data unit (OAMPDU); and transmitting the service data subjected to the secondary packaging to an optical line terminal (OLT), and forwarding the service data subjected to the secondary packaging to a remote server by using the OLT. In the embodiment of the invention, the primary packaging is performed on the service data read from the serial port by the ONU according to the pre-expanded OAM protocol; the secondary packaging is performed on the service data subjected to the primary packaging according to the OAM protocol, so that the service data subjected to the primary packaging exists in the form of OAMPDU; and the service data subjected to the secondary packaging is transmitted to the OLT so as to realize the highly-reliable transmission of the service data.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a method and system for sending service data. Background technique [0002] With the maturity of EPON technology, the implementation of smart grid of power system. The application of EPON system in the industry field will be closer and closer. In this type of industry field, the ONU is connected to the designated data acquisition equipment of the industry through RS232 / 485, and the data is forwarded to the business processing server through the ONU, and this type of data message, The amount of data will not be large, and the transmission will not be very frequent at the same time, but the requirements for the reliability of the data reaching the server are very high. [0003] In the prior art, the business data is read from the serial port, and then the business data is encapsulated into an IP data packet, which is transmitted through the IP protocol stack. How...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06
Inventor 徐吉健张国承
Owner SHENZHEN HONGDIAN TECH CORP
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