Full duplex communication system using disjoint spectral blocks
AssigneeInterDigital Technology Corporation
InventorPrabhakar R. Chitrapu
Life of this patent
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Abstract
The invention involves utilizing pieces of disjoint spectral blocks. In one embodiment, a frequency division duplex approach is used, where each spectral block is utilized solely for either uplink or downlink communications. In another embodiment, a time division duplex approach is used, where each spectral block is time divided and uplink and downlink communications are assigned to different time slots within the same spectral blocks. In another embodiment, a code division duplex approach is utilized, where uplink and downlink communications are assigned different codes/hopping patterns within a same spectral block.
Claims14
A wireless transmit/receive unit comprising:
- at least one circuit configured to receive in a first time interval a first orthogonal frequency division multiple access (OFDM) waveform in a first frequency band over a first plurality of subcarriers and at a same time receive a second OFDM waveform in a second frequency band over a second plurality of subcarriers;
- wherein the first frequency band and the second frequency band are in different spectral blocks and a number of the first plurality of subcarriers differs from the second plurality of subcarriers;
- wherein the at least one circuit is further configured to recover data from the first OFDM waveform and the second OFDM waveform;
- and
- wherein the at least one circuit is further configured to be adaptively assigned frequency bands for reception on a time interval basis.
A method comprising:
- receiving, by a wireless transmit/receive unit (WTRU), in a first time interval a first orthogonal frequency division multiple access (OFDM) waveform in a first frequency band over a first plurality of subcarriers and at a same time receiving, by the WTRU, a second OFDM waveform in a second frequency band over a second plurality of subcarriers;
- wherein the first frequency band and the second frequency band are in different spectral blocks and a number of the first plurality of subcarriers differs from the second plurality of subcarriers;
- and
- recovering, by the WTRU, data from the first OFDM waveform and the second OFDM waveform;
- wherein the WTRU is adaptively assigned frequency bands for reception on a time interval basis.
A base station comprising:
- at least one circuit configured to transmit in a first time interval first data in a first orthogonal frequency division multiple access (OFDM) waveform in a first frequency band over a first plurality of subcarriers to a wireless transmit/receive unit (WTRU) and at a same time transmit second data in a second OFDM waveform in a second frequency band over a second plurality of subcarriers to the WTRU;
- wherein the first frequency band and the second frequency band are in different spectral blocks and a number of the first plurality of subcarriers differs from the second plurality of subcarriers;
- and
- wherein the at least one circuit is further configured to adaptively assign frequency bands to transmit data to the WTRU on a time interval basis.
Dependencies are inferred from the claim text.