System and method for reducing a link failure detection delay using a link energy signal while in a low power idle mode
US8276013B2 · kind B2 · utility
18Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2008 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Nov 6, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for using a link energy signal in physical layer devices (PHYs) having a silent channel/interface in energy efficient Ethernet (EEE). LPI modes in EEE suffer deficiencies in cable unplug detection due to the latency in refresh cycles. LPI modes in EEE also suffer from potential frequency drift, which leads to high bit error rate (BER) when coming out of LPI mode. A link energy signal transmitted during LPI modes enables real-time detection of cable unplug and the frequency lock to be maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.