Control channel determiner
First Claim
Patent Images
1. A state machine comprising:
- a first set of at least one logic device configured to produce an invalid state to indicate that a valid superframe phase field is not present, a second set of at least one logic device configured to produce a between state to indicate that synchronization to a superframe phase field is in progress, and a third set of at least one logic device configured to produce a valid state to indicate that a valid superframe phase field is present, wherein first, second and third sets may overlap.
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Abstract
A unit for determining whether or not a received channel is a control channel is provided. The unit includes a superframe phase estimator and a state machine. The superframe phase estimator estimates the superframe phase based on elapsed time. The state machine determines the validity and the value of a decoded superframe phase field of a received time slot based on the quality of the decoding and in comparison to the estimated superframe phase. The state machine also initializes the superframe estimator.
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11 Claims
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1. A state machine comprising:
a first set of at least one logic device configured to produce an invalid state to indicate that a valid superframe phase field is not present, a second set of at least one logic device configured to produce a between state to indicate that synchronization to a superframe phase field is in progress, and a third set of at least one logic device configured to produce a valid state to indicate that a valid superframe phase field is present, wherein first, second and third sets may overlap. - View Dependent Claims (2, 3, 4, 5)
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6. Apparatus comprising:
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a superframe phase estimator adapted to estimate the superframe phase based on elapsed time; and
a state machine having an invalid state, a between state and a valid state wherein said invalid state is adapted to indicate that a valid superframe phase field is not present, said between state is adapted to indicate that synchronization to a superframe phase field is in progress, and said valid state is adapted to indicate that a valid superframe phase field is present. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification