Method and apparatus for using ranging measurements in a...

H - Electricity – 04 – L

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H04L 7/00 (2006.01) H04N 21/436 (2011.01) H04N 21/647 (2011.01) H04B 3/00 (2006.01) H04L 12/24 (2006.01)

Patent

CA 2738947

According to various embodiments of the disclosure, systems, methods and apparatuses are provided for using ranging to improve network efficiency. In particular, various embodiments of the disclosure provide ranging to improve local clock time synchroniza-tion. According to one embodiment, a method for synchronizing a plurality of nodes on a communication network is provided, compris-ing: exchanging local clock times between a first node and a second node over the communication network; performing a ranging method between the first and second nodes based on the local clock times ex-changed between the first and second nodes, wherein the ranging method results in an estimated propagation delay between the first and second nodes; and adjusting the local clock times of the first and second nodes based on the estimated propagation delay, thereby re-sulting in a synchronized local clock time at the first and second nodes.

Selon divers modes de réalisation, linvention concerne des systèmes, procédés et appareils utilisant la télémétrie pour améliorer lefficacité de réseaux. En particulier, divers modes de réalisation de linvention utilisent la télémétrie pour améliorer la synchronisation de temps dhorloge locale. Selon un mode de réalisation, linvention concerne un procédé permettant de synchroniser une pluralité de nuds dans un réseau de communication et consistant à : échanger des temps dhorloge locale entre un premier nud et un deuxième nud dans le réseau de communication ; effectuer un procédé de télémétrie entre les premier et deuxième nuds sur la base des temps dhorloge locale échangés entre les premier et deuxième nuds, le procédé de télémétrie aboutissant à estimer un retard de propagation entre les premier et deuxième nuds ; et ajuster les temps dhorloge locale des premier et deuxième nuds sur la base du retard de propagation estimé. On obtient de cette façon un temps dhorloge locale qui est synchronisé dans les premier et deuxième nuds.

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