Flexible time-frequency multiplexing structure for wireless communication
First Claim
1. A method within an apparatus, comprising:
- determining a first set of subcarriers corresponding to at least one carrier in a spectral allocation;
determining a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation; and
generating an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and orthogonal frequency division multiplexing (OFDM) data on the first set of subcarriers, OFDM data on the second set of subcarriers and OFDM data on a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises OFDM data, wherein generating the output waveform further comprises generating overhead data for the third set of subcarriers in the overhead interval.
1 Assignment
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Accused Products
Abstract
Techniques for efficiently sending data in a wireless communication system are described. Code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) may be selected for each traffic segment, which may correspond to specific time frequency resources. An output waveform comprised of traffic and overhead segments may be generated. Each traffic segment may carry CDM data at a chip rate if CDM is selected or OFDM data if OFDM is selected. OFDM symbols may be generated at a sample rate that may be an integer ratio of the chip rate and may have a duration that may be determined based on the traffic segment duration. The output waveform may carry CDM data and/or OFDM data on subcarriers corresponding to at least one carrier in a spectral allocation and may further carry OFDM data on remaining usable subcarriers in the spectral allocation.
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Citations
26 Claims
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1. A method within an apparatus, comprising:
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determining a first set of subcarriers corresponding to at least one carrier in a spectral allocation; determining a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation; and generating an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and orthogonal frequency division multiplexing (OFDM) data on the first set of subcarriers, OFDM data on the second set of subcarriers and OFDM data on a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises OFDM data, wherein generating the output waveform further comprises generating overhead data for the third set of subcarriers in the overhead interval.
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2. An apparatus comprising:
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at least one processor configured to determine a first set of subcarriers corresponding to at least one carrier in a spectral allocation, to determine a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation, and to generate an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and orthogonal frequency division multiplexing (OFDM) data on the first set of subcarriers, OFDM data on the second set of subcarriers and OFDM data on a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises OFDM data, wherein the at least one processor generates overhead data for third set of subcarriers in the overhead interval; and a memory coupled to the at least one processor. - View Dependent Claims (3, 4, 5)
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6. An apparatus comprising:
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means for determining a first set of subcarriers corresponding to at least one carrier in a spectral allocation; means for determining a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation; and means for generating an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and orthogonal frequency division multiplexing (OFDM) data on the first set of subcarriers, OFDM data on the second set of subcarriers and OFDM data on a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises OFDM data, wherein the means for generating the output waveform further comprises means for generating overhead data for the third set of subcarriers in the overhead interval.
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7. A method for wireless communication in a communication system, the method comprising:
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determining a first set of subcarriers corresponding to at least one carrier in a spectral allocation; determining a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation; and generating an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and frequency division multiplexing access data on the first set of subcarriers, frequency division multiplexing access data on at least one subcarrier of the second set of subcarriers and frequency division multiplexing access data on at least one subcarrier of a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises frequency division multiplexing access data, wherein generating the output waveform further comprises generating overhead data for the at least one subcarrier of the third set of subcarriers in the overhead interval. - View Dependent Claims (8, 9, 10, 11)
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12. An apparatus for wireless communication in a communication system, the apparatus comprising:
at least one processor configured to determine a first set of subcarriers corresponding to at least one carrier in a spectral allocation;
determine a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation; and
generate an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and frequency division multiplexing access data on the first set of subcarriers, frequency division multiplexing access data on at least one subcarrier of the second set of subcarriers and frequency division multiplexing access data on at least one subcarrier of a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises frequency division multiplexing access data, wherein generating the output waveform further comprises generating overhead data for the at least one subcarrier of the third set of subcarriers in the overhead interval.- View Dependent Claims (13, 14, 15, 16)
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17. An apparatus for use in a communication system, the apparatus comprising:
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means for determining a first set of subcarriers corresponding to at least one carrier in a spectral allocation; means for determining a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation; and means for generating an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and frequency division multiplexing access data on the first set of subcarriers, frequency division multiplexing access data on at least one subcarrier of the second set of subcarriers and frequency division multiplexing access data on at least one subcarrier of a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises frequency division multiplexing access data, wherein generating the output waveform further comprises generating overhead data for the at least one subcarrier of the third set of subcarriers in the overhead interval. - View Dependent Claims (18, 19, 20, 21)
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22. A computer program product, comprising:
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a non-transitory computer-readable medium comprising; code for causing a computer to determine a first set of subcarriers corresponding to at least one carrier in a spectral allocation; code for causing a computer to determine a second set of subcarriers corresponding to remaining usable subcarriers in the spectral allocation; and
code for causing a computer to generate an output waveform for simultaneous transmission comprising mixed code division multiplexing (CDM) data and frequency division multiplexing access data on the first set of subcarriers, frequency division multiplexing access data on at least one subcarrier of the second set of subcarriers and frequency division multiplexing access data on at least one subcarrier of a third set of subcarriers in an overhead interval, wherein a half-slot in a carrier of the at least one carrier comprises at least two traffic segments, and wherein a first segment of the at least two traffic segments comprises CDM data and a second segment of the at least two traffic segments comprises frequency division multiplexing access data, wherein generating the output waveform further comprises generating overhead data for the at least one subcarrier of the third set of subcarriers in the overhead interval. - View Dependent Claims (23, 24, 25, 26)
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Specification