METHOD FOR TRANSMITTING AND RECEIVING SIGNALS IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE FOR PERFORMING SAME
First Claim
1. A method of receiving a signal by a first user equipment in a wireless communication system supporting non-orthogonal multiple access (NOMA), the method comprising:
- obtaining downlink control information for a second user equipment which is NOMA-paired with the first user equipment;
receiving a NOMA signal in which a first physical downlink shared channel (PDSCH) for the first user equipment and a second PDSCH for the second user equipment are multiplexed by different transmit power values; and
cancelling interference caused by the second PDSCH from the NOMA signal based on the downlink control information for the second user equipment,wherein in the cancelling the interference caused by the second PDSCH, when the second PDSCH is a PDSCH retransmitted to the second user equipment by a hybrid automatic repeat request (HARQ) process, the interference caused by the second PDSCH is canceled by reusing predetermined information obtained by the first user equipment during an initial transmission for the HARQ process.
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Accused Products
Abstract
A method for receiving signals by a first terminal in a wireless communication system supporting non-orthogonal multiple access (NOMA), according to one embodiment of the present invention, comprises the steps of: obtaining downlink control information with respect to a second terminal which is NOMA-paired with the first terminal; receiving NOMA signals in which a first physical downlink shared channel (PDSCH) with respect to the first terminal and a second PDSCH with respect to the second terminal are multiplexed by different transmission power values; and removing interference by the second PDSCH from the NOMA signals on the basis of the downlink control information with respect to the second terminal. In the step of removing the interference by the second PDSCH, if the second PDSCH is re-transmitted to the second terminal by an HARQ process, the interference by the second PDSCH can be removed by reusing predetermined information obtained by the first terminal at the time of initial transmission with respect to the HARQ process.
15 Citations
15 Claims
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1. A method of receiving a signal by a first user equipment in a wireless communication system supporting non-orthogonal multiple access (NOMA), the method comprising:
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obtaining downlink control information for a second user equipment which is NOMA-paired with the first user equipment; receiving a NOMA signal in which a first physical downlink shared channel (PDSCH) for the first user equipment and a second PDSCH for the second user equipment are multiplexed by different transmit power values; and cancelling interference caused by the second PDSCH from the NOMA signal based on the downlink control information for the second user equipment, wherein in the cancelling the interference caused by the second PDSCH, when the second PDSCH is a PDSCH retransmitted to the second user equipment by a hybrid automatic repeat request (HARQ) process, the interference caused by the second PDSCH is canceled by reusing predetermined information obtained by the first user equipment during an initial transmission for the HARQ process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A first user equipment for receiving a signal in a wireless communication system supporting non-orthogonal multiple access (NOMA), the first user equipment comprising:
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a receiver to obtain downlink control information for a second user equipment which is NOMA-paired with the first user equipment and to receive a NOMA signal in which a first physical downlink shared channel (PDSCH) for the first user equipment and a second PDSCH for the second user equipment are multiplexed by different transmit power values; and a processor to cancel interference caused by the second PDSCH from the NOMA signal based on the downlink control information for the second user equipment, wherein when the second PDSCH is a PDSCH retransmitted to the second user equipment by a hybrid automatic repeat request (HARQ) process, the processor cancels the interference caused by the second PDSCH by reusing predetermined information obtained by the first user equipment during an initial transmission for the HARQ process. - View Dependent Claims (13, 14, 15)
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Specification