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Devices and methods for flow control of messages in passive optical network (PON) and methods therein

A passive optical network and flow control technology, which is applied to the selection device, selection device, star electromagnetic network and other directions of the multiplexing system, and can solve the problems of limited number of alarms and AVC messages.

Inactive Publication Date: 2015-03-04
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will only be able to handle situations when a single ONU / T device generates a large number of alarms or AVC messages
Normally, for large-scale failures or in large-scale deployments, the number of alarms and AVC messages generated by a single ONU / T device is limited, and thus, will most likely fall below the limit of the rate limit or bandwidth control

Method used

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  • Devices and methods for flow control of messages in passive optical network (PON) and methods therein
  • Devices and methods for flow control of messages in passive optical network (PON) and methods therein
  • Devices and methods for flow control of messages in passive optical network (PON) and methods therein

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Embodiment Construction

[0027] The figures are schematic and simplified for the sake of clarity, and they only show details essential for understanding the embodiments, while other details have been omitted. Throughout, the same reference numerals are used for the same or corresponding parts or steps.

[0028] figure 1 A G-PON access network 100, ie a passive optical network (PON) or PON access network, is illustrated. figure 1 The G-PON 100 depicted in can also be referred to as a network architecture reference model and access network.

[0029] The G-PON access network 100 includes an AN management system 105 . The AN management system 105 is used by the service provider of the G-PON access network 100 to monitor the performance of the G-PON access network 100 .

[0030] The G-PON access network 100 also includes an OLT device 110 . The OLT device is usually located at the central office of the service provider. The OLT device 110 may receive data traffic from ONU / T devices 130, 140 located ne...

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PUM

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Abstract

A method in an Optical Line Terminal, OLT, device (110) for transmitting a flow control message to an Optical Network Unit / Terminal, ONU / T, device (130; 140) in a Passive Optical Network, PON, access network (100) is provided. The OLT device (110) is configured to receive alarm and / or Attribute Value Change, AVC, messages from the ONU / T device (130; 140). The OLT device (110) is also configured to temporarily store the alarm and / or AVC messages in a message queue. The OLT device (110) generates a flow control message indicating that the ONU / T device (130; 140) is to stop transmitting alarm and / or AVC messages to the OLT device (110), when the number of alarm and / or AVC messages in the message queue exceeds a first threshold. Then, the OLT device (110) transmits the flow control message to the ONU / T device(s) (130; 140). An OLT device (110) for transmitting a flow control message to a ONU / T device (130; 140), an ONU / T device (130; 140) for receiving a flow control message, and method in an ONU / T device (130; 140) for receiving a flow control message is also provided.

Description

technical field [0001] Embodiments herein relate to apparatus and methods in a passive optical network (PON). In particular, embodiments herein relate to flow control messages in optical line terminal (OLT) and optical network unit / terminal (ONU / T) devices in a PON. Background technique [0002] A Passive Optical Network (PON) is an access network that brings fiber optic cabling and signals all or most of the way to end users in order to provide them eg consumer bandwidth services. [0003] A PON includes Optical Line Terminal (OLT) devices. The OLT device is located at the central office of the service provider. Service providers can operate PONs to provide consumer broadband services to end users. A PON also includes a number of Optical Network Unit / Terminal (ONU / T) devices located near the end-user terminal (TE) or home network (HN). An Optical Distribution Network (ODN) comprising optical fibers and splitters can be used between the OLT device and the ONU / T device in...

Claims

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Application Information

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IPC IPC(8): H04B10/07H04Q11/00H04L12/24
CPCH04B10/07H04B10/272H04B2210/071H04L41/06H04Q11/0067H04L47/266H04L43/16H04Q2011/0088H04L41/0604
Inventor L.陈L.塞德
Owner TELEFON AB LM ERICSSON (PUBL)