SPS synchronization method
First Claim
1. Synchronization method of a remote unit from a SPS timing signal produced in a local unit, this SPS timing signal being in the form of successive pulses (1) which are produced from signals received from satellites, the method being characterized in that it includes the following steps:
- calculation in the local unit of an information (“
10011010”
) representing the number of local clock cycles occurring from the appearance of a pulse until the moment when this information is injected into the data stream (FR);
injection of said information (“
10011010”
) into said data stream (FR); and
generation in the remote unit of a synchronization signal related to the SPS signal, depending on said information (“
10011010”
).
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Accused Products
Abstract
This invention refers to a synchronization method of a remote unit from a SPS timing signal (SPS) produced in a local unit. The SPS timing signal (SPS) is in the form of successive pulses (1) which are produced from signals received from satellites. The SPS signal (SPS) is asynchronous with respect to the system clock, that is, the reference clock defined between the local unit and the remote unit has no initial relationship with the SPS signal (SPS).
The invention is characterized in that it includes the following steps:
calculation in the local unit of an information (“10011010”) representing the number of local clock cycles occurring from the appearance of a pulse (1) until the moment (SL) when this information is injected into the data stream (FR); and
generation in the remote unit of a synchronization signal related to the SPS signal, depending on this information (“10011010”).
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Citations
3 Claims
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1. Synchronization method of a remote unit from a SPS timing signal produced in a local unit, this SPS timing signal being in the form of successive pulses (1) which are produced from signals received from satellites, the method being characterized in that it includes the following steps:
-
calculation in the local unit of an information (“
10011010”
) representing the number of local clock cycles occurring from the appearance of a pulse until the moment when this information is injected into the data stream (FR);
injection of said information (“
10011010”
) into said data stream (FR); and
generation in the remote unit of a synchronization signal related to the SPS signal, depending on said information (“
10011010”
).- View Dependent Claims (2, 3)
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Specification
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- Resources
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Current AssigneeWSOU Investments, LLC (WSOU Holdings, LLC)
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Original AssigneeAlcatel SA (Nokia Corporation)
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InventorsAnaya Luengo, Juan Jose
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Primary Examiner(s)Chin, Wellington
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Assistant Examiner(s)Pham, Brenda H.
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Application NumberUS09/107,987Time in Patent Office1,036 DaysField of Search370/316, 370/503, 370/509, 370/510, 370/514, 370/516, 370/350, 370/304, 375/354, 375/362, 375/363, 375/364, 375/365, 375/371, 455/13.2US Class Current370/350CPC Class CodesH04J 3/0644 External master-clockH04J 3/0647 Synchronisation among TDM n...
