Using multiple oscillators across a sub-network for improved holdover
US9331804B2 · kind B2 · utility
3Cited by
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14Claims
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Assignee
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Key dates
| Filing date | May 22, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Oct 1, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and system are provided for improving maintenance of timing information when a node enters holdover due to a lost connection between a sub-network and a reference clock. Each node within the sub-network sends information concerning the drift of its local oscillator to a single node, and the single node uses this information to determine timing information for the entire sub-network. The single node may also use knowledge of the characteristics of the local oscillators. In this way, drift from the reference clock can be minimized without incurring significant added hardware costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.