FLEXIBLE TIME-FREQUENCY MULTIPLEXING STRUCTURE FOR WIRELESS COMMUNICATION
First Claim
1. An apparatus comprising:
- at least one processor to select code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for each of at least one traffic segment, and to generate an output waveform comprised of the at least one traffic segment, each traffic segment carrying CDM data if CDM is selected for the traffic segment or OFDM data if OFDM is selected for the traffic segment; and
a memory coupled to the at least one processor.
1 Assignment
0 Petitions
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.
124 Citations
53 Claims
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1. An apparatus comprising:
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at least one processor to select code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for each of at least one traffic segment, and to generate an output waveform comprised of the at least one traffic segment, each traffic segment carrying CDM data if CDM is selected for the traffic segment or OFDM data if OFDM is selected for the traffic segment; and a memory coupled to the at least one processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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selecting code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for each of at least one traffic segment; and generating an output waveform comprised of the at least one traffic segment, each traffic segment carrying CDM data if CDM is selected for the traffic segment or OFDM data if OFDM is selected for the traffic segment. - View Dependent Claims (10)
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11. An apparatus comprising:
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means for selecting code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for each of at least one traffic segment; and means for generating an output waveform comprised of the at least one traffic segment, each traffic segment carrying CDM data if CDM is selected for the traffic segment or OFDM data if OFDM is selected for the traffic segment. - View Dependent Claims (12)
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13. An apparatus comprising:
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at least one processor to select code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for a traffic interval, to generate CDM data at a chip rate and to send the CDM data in the traffic interval if CDM is selected, and to generate at least one OFDM symbol at a sample rate and to send the at least one OFDM symbol in the traffic interval if OFDM is selected, the sample rate being related to the chip rate by an integer ratio, and each OFDM symbol having a duration determined based on duration of the traffic interval; and a memory coupled to the at least one processor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A method comprising:
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selecting code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for a traffic interval; generating CDM data at a chip rate and sending the CDM data in the traffic interval if CDM is selected; and generating at least one OFDM symbol at a sample rate and sending the at least one OFDM symbol in the traffic interval if OFDM is selected, the sample rate being related to the chip rate by an integer ratio, and each OFDM symbol having a duration determined based on duration of the traffic interval. - View Dependent Claims (23)
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24. An apparatus comprising:
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means for selecting code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for a traffic interval; means for generating CDM data at a chip rate and sending the CDM data in the traffic interval if CDM is selected; and means for generating at least one OFDM symbol at a sample rate and sending the at least one OFDM symbol in the traffic interval if OFDM is selected, the sample rate being related to the chip rate by an integer ratio, and each OFDM symbol having a duration determined based on duration of the traffic interval. - View Dependent Claims (25)
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26. An apparatus comprising:
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at least one processor 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 comprising code division multiplexing (CDM) data or orthogonal frequency division multiplexing (OFDM) data or both CDM data and OFDM data on the first set of subcarriers and further comprising OFDM data on the second set of subcarriers; and a memory coupled to the at least one processor. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A 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 comprising code division multiplexing (CDM) data or orthogonal frequency division multiplexing (OFDM) data or both CDM data and OFDM data on the first set of subcarriers and further comprising OFDM data on the second set of subcarriers. - View Dependent Claims (33)
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34. 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 comprising code division multiplexing (CDM) data or orthogonal frequency division multiplexing (OFDM) data or both CDM data and OFDM data on the first set of subcarriers and further comprising OFDM data on the second set of subcarriers. - View Dependent Claims (35)
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36. An apparatus comprising:
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at least one processor to generate a first set of at least one orthogonal frequency division multiplexing (OFDM) symbol in accordance with a first OFDM symbol numerology for a first terminal, and to generate a second set of at least one OFDM symbol in accordance with a second OFDM symbol numerology for a second terminal; and a memory coupled to the at least one processor. - View Dependent Claims (37, 38, 39, 40)
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41. A method comprising:
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generating a first set of at least one orthogonal frequency division multiplexing (OFDM) symbol in accordance with a first OFDM symbol numerology for a first terminal; and generating a second set of at least one OFDM symbol in accordance with a second OFDM symbol numerology for a second terminal. - View Dependent Claims (42)
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43. An apparatus comprising:
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means for generating a first set of at least one orthogonal frequency division multiplexing (OFDM) symbol in accordance with a first OFDM symbol numerology for a first terminal; and means for generating a second set of at least one OFDM symbol in accordance with a second OFDM symbol numerology for a second terminal. - View Dependent Claims (44)
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45. An apparatus comprising:
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at least one processor to determine whether code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) is used for a traffic segment, to process received samples to recover CDM data sent in the traffic segment if CDM is used, and to process the received samples to recover OFDM data sent in the traffic segment if OFDM is used; and a memory coupled to the at least one processor. - View Dependent Claims (46, 47, 48, 49)
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50. A method comprising:
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determining whether code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) is used for a traffic segment; processing received samples to recover CDM data sent in the traffic segment if CDM is used; and processing the received samples to recover OFDM data sent in the traffic segment if OFDM is used. - View Dependent Claims (51)
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52. An apparatus comprising:
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means for determining whether code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) is used for a traffic segment; means for processing received samples to recover CDM data sent in the traffic segment if CDM is used; and means for processing the received samples to recover OFDM data sent in the traffic segment if OFDM is used. - View Dependent Claims (53)
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Specification