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A method and system for transmitting data in a passive optical network under full protection mode

A passive optical network, data transmission technology, applied in the field of communications, can solve the problems affecting the efficiency of service recovery, no backup OLT and backup ONU data transmission definition, etc., to achieve the effect of improving service quality

Active Publication Date: 2015-08-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned full protection mode, when one of the above-mentioned faults occurs, the relevant active ONU needs to switch all or part of its business or OLT1’s configuration to the standby ONU. After the ONU and the standby ONU complete the above switching, the standby ONU needs to report to OLT2 that it has completed the switching to restore the business with the OLT. However, in the prior art, only after the standby OLT completes the switching process, will the standby ONU The allocation of upstream bandwidth seriously affects the efficiency of service recovery, and in the existing EPON system and GPON system, there is no clear definition of data transmission between the backup OLT and the backup ONU

Method used

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  • A method and system for transmitting data in a passive optical network under full protection mode
  • A method and system for transmitting data in a passive optical network under full protection mode
  • A method and system for transmitting data in a passive optical network under full protection mode

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Embodiment 1

[0056] The passive optical network topology structure of the full protection mode of this embodiment is as follows Figure 2a or Figure 2b As shown, OLT1 is connected to all active ONUs through optical splitter 1. The registration and discovery of ONUs is performed between the OLT1 and the active ONU according to the existing technology in the EPON or the next-generation PON based on the EPON technology, and the service data is transmitted between the OLT1 and the active ONU. When the optical fiber between OLT1 and optical splitter 1 is disconnected, or part or all of the optical fiber between optical splitter 1 and the active ONU is disconnected, or the reception of OLT1 fails, or the transmission of the active ONU fails , OLT1 detects that some ONUs or all ONUs have an error in the uplink optical link, and the communication between OLT and ONU is restored according to the following main steps:

[0057] Step 101: When OLT1 detects that some or all of the upstream optical l...

Embodiment 2

[0070]The passive optical network topology structure of the full protection mode of this embodiment is as follows Figure 2a or Figure 2b As shown, OLT1 is connected to all active ONUs through optical splitter 1. The registration and discovery of ONUs is performed between the OLT1 and the active ONU according to the existing technology in the EPON or the next-generation PON based on the EPON technology, and the service data is transmitted between the OLT1 and the active ONU. OLT2 is connected to all standby ONUs through optical splitter 2. ONU registration and discovery are performed between OLT2 and standby ONUs according to the existing technology in EPON or next-generation PON based on EPON technology, and no service data is transmitted between OLT2 and standby ONUs. .

[0071] According to the command of OLT1 or the network management system, OLT2 allocates specific uplink bandwidth to the backup ONU in a certain cycle or irregularly. The LLIDs corresponding to the upl...

Embodiment 3

[0082] The passive optical network topology structure of the full protection mode of this embodiment is as follows Figure 2a or Figure 2b As shown, OLT1 is connected to all active ONUs through optical splitter 1. The registration and activation of the ONU is performed between the OLT1 and the active ONU according to the existing technology in the GPON or the next-generation PON based on the GPON technology, and the transmission of service data between the OLT and the ONU is performed. When the optical fiber between OLT1 and optical splitter 1 is disconnected, or part or all of the optical fiber between optical splitter 1 and the active ONU is disconnected, or the reception of OLT1 fails, or the transmission of the active ONU fails , OLT1 detects that some ONUs or all ONUs have an error in the uplink optical link, and the communication between OLT and ONU is restored according to the following main steps:

[0083] Step 301: When OLT1 detects that some or all of the upstream...

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Abstract

A method and system for transmitting data based on full protection mode in a Passive Optical Network (PON). The method includes: a standby Optical Line Terminal (OLT) allocates an uplink bandwidth for a standby Optical Network Unit (ONU); after a main ONU complete to switch to the standby ONU, the standby ONU transmits data to the standby OLT in the uplink bandwidth. Applying the invention, when a failure occurs on OLT, fiber or ONU in the PON system, ONU and OLT can resume communication quickly, and the service quality of the PON system is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for transmitting data in a passive optical network (Passive Optical Network, PON for short) in full protection mode. Background technique [0002] Gigabit-Capable Passive Optical Network (GPON, Gigabit-Capable Passive Optical Network) technology and Ethernet Passive Optical Network (EPON, Ethernet Passive Optical Network) are two important technical branches in the PON family, similar to other PON technologies, GPON And EPON is also a passive optical access technology that adopts a point-to-multipoint topology. [0003] The topology of the PON system is as follows figure 1 As shown, PON consists of an optical line terminal (OLT, Optical Line Terminal) on the office side, an optical network unit (ONU, Optical Network Unit) on the user side, and an optical distribution network (ODN, Optical Distribution Network). point network structure. ODN consists of pass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02H04B10/272
CPCH04Q11/0067H04B10/272H04Q2011/0081
Inventor 耿丹何苑凌张伟良臧美燕
Owner ZTE CORP