HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS WTRU AND METHOD
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Abstract
A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method are disclosed. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data.
6 Citations
44 Claims
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1-19. -19. (canceled)
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20. A node B base station comprising:
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circuitry to map transmission data to physical resources modulated according to an orthogonal frequency division multiple access (OFDMA) scheme, wherein the mapped transmission data comprises; first data for a plurality of users mapped to a plurality of subcarriers of a first OFDM symbol time slot; and second data for the plurality of users mapped to a plurality of subcarriers of a second OFDM symbol time slot, wherein data for at least one of the plurality of users is mapped to a different subcarrier in the first and second OFDM symbol time slots; and transmission circuitry to transmit the first and the second OFDM symbol time slot data including the mapped transmission data, wherein at least one of the first or second OFDM symbol time slot data further includes downlink reference signal data. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A user equipment (UE) comprising
circuitry to receive data modulated according to an orthogonal frequency division multiple access (OFDMA) scheme, comprising: -
mapped receiver data including a first data for physical resources assigned to a plurality of users mapped to a plurality of subcarriers of a first OFDM symbol time slot, and a second data for physical resources assigned to the plurality of users mapped to a plurality of subcarriers of a second OFDM symbol time slot, wherein data for physical resources assigned to at least one of the plurality of users is mapped to a different subcarrier in the first and second OFDM symbol time slots; and downlink reference signal data included in at least one of the first or second OFDM symbol time slots; and a demapping unit to demap the mapped receiver data. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. A user equipment (UE) comprising:
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circuitry to map uplink control data to physical resources modulated according to an orthogonal frequency division multiple access (OFDMA) scheme, wherein the mapped transmission data comprises; first uplink control data for a plurality of users mapped to a plurality of subcarriers of a first OFDM symbol time slot; and second uplink control data for the plurality of users mapped to a plurality of subcarriers of a second OFDM symbol time slot, wherein data for at least one of the plurality of users is mapped to a different subcarrier in the first and second OFDM symbol time slots; and transmission circuitry to transmit the first and the second OFDM symbol time slot data including the mapped transmission data. - View Dependent Claims (37, 38)
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39. An apparatus comprising:
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a processor to execute Fourier transform functions to map transmission data to physical resources modulated according to an orthogonal frequency division multiple access (OFDMA) scheme, wherein the mapped transmission data comprises; first data for a plurality of users mapped to a plurality of subcarriers of a first OFDM symbol time slot; and second data for the plurality of users mapped to a plurality of subcarriers of a second OFDM symbol time slot, wherein data for at least one of the plurality of users is mapped to a different subcarrier in the first and second OFDM symbol time slots; and a memory to store the first and the second OFDM symbol time slot data including the mapped transmission data, wherein at least one of the first or second OFDM symbol time slot data further includes downlink reference signal data. - View Dependent Claims (40, 41)
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42. An apparatus comprising:
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a processor to execute Fourier transform functions to demap data modulated according to an orthogonal frequency division multiple access (OFDMA) scheme comprising; mapped receiver data including a first data for a plurality of users mapped to a plurality of subcarriers of a first OFDM symbol time slot, and a second data for the plurality of users mapped to a plurality of subcarriers of a second OFDM symbol time slot, wherein data for at least one of the plurality of users is mapped to a different subcarrier in the first and second OFDM symbol time slots; and downlink reference signal data included in at least one of the first or second OFDM symbol time slots; and a memory to store the demapped data. - View Dependent Claims (43, 44)
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Specification