发明公开
- 专利标题: Timing recovery over packet networks
- 专利标题(中): TaktrückgewinnungüberPaketnetzwerke
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申请号: EP10163404.6申请日: 2010-05-20
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公开(公告)号: EP2254278A1公开(公告)日: 2010-11-24
- 发明人: Rahbar, Kamran
- 申请人: Zarlink Semiconductor Inc.
- 申请人地址: 400 March Road Kanata, Ontario K2K 3H4 CA
- 专利权人: Zarlink Semiconductor Inc.
- 当前专利权人: Zarlink Semiconductor Inc.
- 当前专利权人地址: 400 March Road Kanata, Ontario K2K 3H4 CA
- 代理机构: Harding, Richard Patrick
- 优先权: GB0908884 20090522
- 主分类号: H04L12/26
- IPC分类号: H04L12/26 ; H04J3/06
摘要:
In a method of recovering timing information over packet networks, raw network delays are measured using timing packets sent between a transmitter and receiver. The expected delay is predicted using a minimum statistics adaptive filter (1000) to track local minima of measured time delays over a smoothing window. Only those incoming timing packets which meet a particular criterion relative to the expected delay within a smoothing window are selected, and a local clock is adjusted based on the measured timing delays from the selected timing packets.
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