Transmission device, transmission system, and transmission method
US-2015381280-A1 · Dec 31, 2015 · US
Optical transport network alarms
US8934769B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8934769-B2 |
| Application number | US-200913511368-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 25, 2009 |
| Priority date | Nov 25, 2009 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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An optical transport network signal (OTM) comprising at least one optical channel is received at a first network equipment. The optical transport network signal (OTM) is processed to extract optical data units (ODUk) for each optical channel (OCh). There is detection for defects during the processing. The optical data units are retransmitted within optical transport units (OTUk) towards a second network equipment. When a defect has been detected, the retransmitting comprises inserting an optical channel transport unit alarm indication signal (OTUk-AIS) in an optical channel transport unit (OTUk) containing optical channel data units (ODUk) that are affected by the detected defect. The second network equipment detects for the presence of the optical channel transport unit alarm indication signal (OTUk-AIS) and generation of an alarm is inhibited for any optical channel data units (ODUk) contained within the optical channel transport unit that comprises the optical channel transport unit alarm indication signal (OTUk-AIS). The network equipments can comprise a WDM or DWDM equipment and a cross-connect.
First claim
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The invention claimed is: 1. A method of processing an optical transport network signal comprising at least one optical channel, the method comprising, at a first network equipment: receiving the optical transport network signal; processing the received optical transport network signal to extract optical data units for each optical channel; detecting for defects during the processing step; retransmitting the optical data units within optical transport units towards a second…
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Electricity · mapped topic
- H04J3/14Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8934769B2 cover?
- An optical transport network signal (OTM) comprising at least one optical channel is received at a first network equipment. The optical transport network signal (OTM) is processed to extract optical data units (ODUk) for each optical channel (OCh). There is detection for defects during the processing. The optical data units are retransmitted within optical transport units (OTUk) towards a secon…
- Who is the assignee on this patent?
- Toscano Orazio, Lanzone Sergio, Ericsson Telefon Ab L M
- What technology area does this patent fall under?
- Primary CPC classification H04J3/14. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).