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US 6,665,277 B1Granted
Comma free codes for fast cell search using tertiary synchronization channel
AssigneeTexas Instruments Incorporated
InventorSundararajan Sriram
Life of this patent
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Abstract
A method of processing data comprises the receiving a frame of data having a predetermined number of time slots (502,504,506). Each time slot comprises a respective plurality of data symbols (520). The method further comprises a primary (508), a secondary (510) and a tertiary (512) synchronization code in each said predetermined number of time slots.
Claims14
A method, comprising the steps of:
- receiving a frame of data having a predetermined number of time slots, each time slot being adjacent another time slot;
- receiving a plurality of data symbols in each respective time slot;
- receiving a primary, a secondary and a tertiary synchronization code over respective channels in each said predetermined number of time slots;
- matching the tertiary synchronization code with a predetermined code;
- producing a match signal in response to the step of matching;
- comparing the match signal to a threshold signal;
- identifying a first time slot of the frame by the tertiary synchronization code in response to a first state of the match signal;
- and
- identifying the first time slot of the frame by the secondary synchronization code in response to a second state of the match signal that is different from the first state.
6 more elements
A method, comprising the steps of:
- receiving a plurality of frames of data, each frame having a predetermined number of time slots, each time slot being adjacent another time slot;
- receiving a primary synchronization code over a first channel in each said predetermined number of time slots;
- receiving a secondary synchronization code over a second channel in each said predetermined number of time slots;
- and
- receiving a tertiary synchronization code over a third channel in each said predetermined number of time slots, wherein at least two of the plurality of frames comprise different tertiary synchronization codes.
2 more elements
A method, comprising the steps of:
- transmitting a frame of data having a predetermined number of time slots, each time slot being adjacent another time slot;
- transmitting a plurality of data symbols in each respective time slot;
- transmitting a primary, a secondary and a tertiary synchronization code over respective channels in each said predetermined number of time slots;
- transmitting the secondary and tertiary synchronization codes when a number of long code groups exceeds a predetermined number;
- and
- transmitting the secondary synchronization code and not the tertiary synchronization code in response when the number of long code groups is less than or equal to the predetermined number.
3 more elements
A method, comprising the steps of:
- transmitting a plurality of frames of data, each frame having a predetermined number of time slots, each time slot being adjacent another time slot;
- transmitting a primary synchronization code over a first channel in each said predetermined number of time slots;
- transmitting a secondary synchronization code over a second channel in each said predetermined number of time slots;
- and
- transmitting a tertiary synchronization code over a third channel in each said predetermined number of time slots, wherein at least two of the plurality of frames comprise different tertiary synchronization codes.
2 more elements
Dependencies are inferred from the claim text.