Non-Orthogonal Multiple Access (NOMA) Wireless Systems and Methods
First Claim
1. An Evolved NodeB (eNB), comprising:
- a memory storing executable instructions;
a processor configured to execute the executable instructions to at least;
evaluate an orthogonal multiple access (OMA) metric and a non-orthogonal multiple access (NOMA) metric of a plurality of user equipments (UEs) comprising a first UE and a second UE having a lower channel gain than the first UE;
generate, based on the OMA metric and the NOMA metric, a protocol instruction that indicates an OMA transmission or a NOMA transmission; and
determine a first modulation and coding scheme (MCS) for the first UE and a second MCS for the second UE; and
a transmitter circuit configured to receive the protocol instruction and to transmit, in response thereto, a first data signal and a first downlink control information (DCI) message associated with the first UE, and a second data signal and a second DCI message associated with the second UE,wherein, in response to the protocol instruction indicating the NOMA transmission, the first data signal and the second data signal are power multiplexed, the first DCI message and the second DCI message indicate the first data signal and the second data signal are transmitted via NOMA, and the first DCI message indicates the second MCS.
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Accused Products
Abstract
Apparatuses and methods for Non-Orthogonal Multiple Access (NOMA) communication are discussed. An example Evolved NodeB (eNB) includes a memory, a processor, and a transmitter circuit. The processor evaluates an orthogonal multiple access (OMA) metric and a NOMA metric, generates a protocol instruction that indicates an OMA transmission or a NOMA transmission based on the metrics, and determines a first modulation and coding scheme (MCS) for a first UE and a second MCS for a second UE. The transmitter circuit receives the protocol instruction and transmits a first data signal and a first downlink control information (DCI) message associated with the first UE, and a second data signal and a second DCI message associated with the second UE. When the protocol instruction indicates NOMA transmission, the data signals are power multiplexed, the DCI messages indicate the data signals are transmitted via NOMA, and the first DCI message indicates the second MCS.
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Citations
25 Claims
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1. An Evolved NodeB (eNB), comprising:
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a memory storing executable instructions; a processor configured to execute the executable instructions to at least; evaluate an orthogonal multiple access (OMA) metric and a non-orthogonal multiple access (NOMA) metric of a plurality of user equipments (UEs) comprising a first UE and a second UE having a lower channel gain than the first UE; generate, based on the OMA metric and the NOMA metric, a protocol instruction that indicates an OMA transmission or a NOMA transmission; and determine a first modulation and coding scheme (MCS) for the first UE and a second MCS for the second UE; and a transmitter circuit configured to receive the protocol instruction and to transmit, in response thereto, a first data signal and a first downlink control information (DCI) message associated with the first UE, and a second data signal and a second DCI message associated with the second UE, wherein, in response to the protocol instruction indicating the NOMA transmission, the first data signal and the second data signal are power multiplexed, the first DCI message and the second DCI message indicate the first data signal and the second data signal are transmitted via NOMA, and the first DCI message indicates the second MCS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A user equipment (UE), comprising:
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an antenna port configured to couple to at least one antenna, wherein the antenna port is configured to receive a physical downlink control channel (PDCCH) transmission comprising a downlink control information (DCI) message and to receive a physical downlink shared channel (PDSCH) transmission comprising a first data signal and a second data signal; a processor operably coupled to the antenna port and configured to decode the second data signal to obtain a decoded second data signal and to determine, based on the DCI message, whether the PDSCH transmission is an orthogonal multiple access (OMA) transmission or a non-orthogonal multiple access NOMA transmission, wherein, in response to a determination that the PDSCH transmission is the NOMA transmission, the processor is configured to determine whether the DCI message indicates a first reception protocol or a second reception protocol distinct from the first reception protocol; and an interference cancellation component operably coupled to the antenna port and configured to employ interference cancellation according to at least one of a codeword level or a symbol level, wherein, in response to a determination that the DCI message indicates the first reception protocol, the interference cancellation component is configured to employ the interference cancellation to subtract the decoded second data signal from the PDSCH transmission to obtain the first data signal, and the processor is configured to decode the first data signal as a received data signal, and wherein, in response to a determination that the DCI message indicates the second reception protocol, the processor is configured to designate the decoded second data signal as the received data signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory machine readable medium comprising instructions that, when executed, cause an Evolved NodeB (eNB) to:
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determine a projected first data throughput of an orthogonal multiple access (OMA) protocol and a projected second data throughput of a non-orthogonal multiple access (NOMA) protocol; select, based on a comparison between the projected first data throughput and the projected second data throughput, the OMA protocol or the NOMA protocol as a selected protocol; determine, in response to selecting the NOMA protocol, a first power allocation ratio for a first UE and a second power allocation ratio for a second UE with a lower signal-to-interference-plus-noise ratio (SINR) than the first UE, wherein the second power allocation ratio is greater than the first power allocation ratio; transmit, via a physical downlink shared channel (PDSCH), a first data signal associated with the first UE according to a first transmission mode and a second data signal associated with the second UE according to a second transmission mode, wherein, in response to selecting the NOMA protocol, the first data signal and the second data signal are transmitted as a super-imposed signal comprising the first data signal according to the first power allocation ratio and the second data signal according to the second power allocation ratio; and transmit, via a physical downlink control channel (PDCCH), a first DCI message associated with the first UE and a second DCI message associated with the second UE, wherein the first DCI message and the second DCI message indicate the selected protocol. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification