System and method for determining a best round trip delay...

Details System and method for determining a best round trip delay... System and method for determining a best round trip delay...

2007-07-31

2007-07-31

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S316000, C375S147000, C455S039000, C455S500000

Reexamination Certificate

active

10319191

ABSTRACT:
A system and method for determining a round trip delay (RTD) indicator for mobile telephone signals originating from a mobile unit and received at a plurality of base stations in a wireless telecommunications system comprising at least some base stations using rake receivers, each rake receiver comprising a plurality of fingers. The method includes the steps of: collecting one or more finger characteristics from one or more rake receiver fingers assigned to one or more multi-path components of a signal; determining a finger lock category for at least one of the assigned one or more rake receiver fingers using the collected one or more finger characteristics; selecting a rake receiver finger from the one ore more rake receiver fingers using the determined finger lock categories, wherein the selected rake receiver finger has an associated RTD; and recording the RTD indicator corresponding to the selected finger. The system includes a processor configured to perform the foregoing steps.

REFERENCES:
patent: 5982758 (1999-11-01), Hamdy
patent: 6433739 (2002-08-01), Soliman
patent: 6754252 (2004-06-01), Aldaz
patent: 6785321 (2004-08-01), Yang et al.
patent: 2002/0034947 (2002-03-01), Soliman
patent: 2003/0134648 (2003-07-01), Reed et al.

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