WIRELESS ACCESS POINT CLOCK SYNCHRONIZATION SYSTEM
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United States of America Patent
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Issued Date -
May 17, 2012
app pub date -
Nov 15, 2011
filing date -
Nov 15, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In an ultra-wideband (“UWB”) network, a central location engine (“CLE”) coordinates operation of an anchor access point (“AP”), AP[0], and a plurality of non-anchor AP[x]s. A clock calibration packet (“CCP”) transmission method and related apparatus facilitate normalization of CCP time references reported to the CLE by all APs. Implementing a digital phase locked loop (“DPLL”) in the CLE facilitates clock normalization. Implementing a DPLL in at least the non-anchor AP[x]s facilitates local clock synchronization, and may improve network efficiency by reducing clock synchronization traffic.
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