System clock synchronization in an ad hoc and infrastructure wireless networks
First Claim
1. A method of synchronizing clocks in the stations of ad hoc and infrastructure networks comprising:
- providing a time stamp field in a header;
reading the header by all stations in a network;
extracting the time stamp information from the header by each station in the network as time information;
sending extracted time information to a station clock; and
adjusting the station clock as a function of the extracted time information.
2 Assignments
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Accused Products
Abstract
A method of synchronizing clocks in the stations of ad hoc and infrastructure networks includes providing a time stamp field in a header; reading the header by all stations in a network; extracting the time stamp information from the header by each station in the network as time information; sending extracted time information to a station clock; and adjusting the station clock as a function of the extracted time information. A system for synchronizing clocks in the stations of ad hoc and infrastructure networks includes a DLL having a comparator for receiving the time stamp information and a low-pass filter having a long time-constant for adjusting the station clock in a gradual manner; a time stamp field in a header; and time information extracted from the time stamp information of the header by each station in the network.
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Citations
15 Claims
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1. A method of synchronizing clocks in the stations of ad hoc and infrastructure networks comprising:
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providing a time stamp field in a header;
reading the header by all stations in a network;
extracting the time stamp information from the header by each station in the network as time information;
sending extracted time information to a station clock; and
adjusting the station clock as a function of the extracted time information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for synchronizing clocks in the stations of ad hoc and infrastructure networks comprising:
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a DLL having a comparator for receiving the time stamp information and a low-pass filter having a long time-constant for adjusting the station clock in a gradual manner;
a time stamp field in a header; and
time information extracted from the time stamp information of the header by each station in the network. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification