Base station operation method and device for supporting D2D signal transmission in wireless communication system
The present disclosure relates to a communication technique for converging, with an IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, and security and safety related services, on the basis of 5G communications technologies and IoT-related technologies. The purpose of the present invention is to solve the problem of discharged electrical power in a band caused by a D2D signal transmission adding noise to cellular signal transmission. The present invention may comprise: transmitting downlink data to a terminal from a base station; receiving positive reception acknowledgement (ACK) or negative reception acknowledgement (NACK) information on a physical uplink control channel (PUCCH) according to the results of receiving the downlink data; determining whether an uplink resource where the ACK or NACK information is received is included in a first resource or a second resource; and interpreting, in particular by the base station, the ACK or NACK information as ACK if the uplink resource where the ACK or NACK information is received is included in the first resource.
1. A method by a base station for a wireless communication system, the method comprising:
transmitting, to a terminal, downlink data;
receiving, from the terminal, hybrid automatic repeat request (HARQ) information corresponding to the downlink data via a first resource on a physical uplink control channel (PUCCH);
determining whether the first resource for the HARQ information is included in a second resource; and
determining that the HARQ information includes negative acknowledgement (NACK) information, in case that the first resource is included in the second resource,
wherein the second resource is multiplexed with a device-to-device (D2D) communication resource used by at least one terminal with a reference signal received power (RSRP) value, measured for a reference signal of the base station, greater than a predetermined threshold value.
2. The method of claim 1 , wherein, in case that the first resource is not included in the second resource, the HARQ information including acknowledgement (ACK) or the NACK information is decoded by the base station.
3. The method of claim 2 , wherein the determining that the HARQ information includes the NACK information further comprises:
determining that the HARQ information includes the NACK information regardless of whether the HARQ information includes the ACK or the NACK information, in case that the first resource is included in the second resource.
4. A method by a base station for a wireless communication system, the method comprising:
identifying, in case that downlink data for a terminal is to be transmitted in a first subframe, a first resource used for a transmission of acknowledgement (ACK) or negative acknowledgement (NACK) information corresponding to the downlink data which is received on a physical uplink control channel (PUCCH);
identifying whether the first resource is to be included in a second resource; and
transmitting, to the terminal, the downlink data in a second subframe following the first subframe, in case that the first resource is to be included in the second resource,
wherein the second resource is multiplexed with a device-to-device (D2D) communication resource used by at least one terminal with a reference signal received power (RSRP) value, measured for a reference signal of the base station, greater than a predetermined threshold value.
5. The method of claim 4 , further comprising:
transmitting, to the terminal, the downlink data in the first subframe, in case that the first resource is not to be included in the second resource.
6. A method by a base station for a wireless communication system, the method comprising:
identifying a first resource used for a transmission of uplink data transmitted from a terminal on a physical uplink shared channel (PUSCH), based on first downlink control information;
identifying whether the first resource is to be included in a second resource;
adjusting, in case that the first resource is to be included in the second resource, modulation and coding scheme (MCS) level information included in the first downlink control information; and
transmitting, to the terminal, second downlink control information including the adjusted MCS level information,
wherein the second resource is multiplexed with a device-to-device (D2D) communication resource used by at least one terminal with a reference signal received power (RSRP) value, measured for a reference signal of the base station, greater than a predetermined threshold value.
7. The method of claim 6 , further comprising:
transmitting, to the terminal, the second downlink control information including the MCS level information, in case that the first resource is not to be included in the second resource.
8. A base station for a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
transmit, to a terminal via the transceiver, downlink data;
receive, from the terminal via the transceiver, hybrid automatic repeat request (HARQ) information corresponding to the downlink data via a first resource on a physical uplink control channel (PUCCH);
determine whether the first resource is included in a second resource; and
determine that the HARQ information includes negative acknowledgement (NACK) information, in case that the first resource included in the second resource,
wherein the second resource is multiplexed with a device-to-device (D2D) communication resource used by at least one terminal with a reference signal received power (RSRP) value, measured for a reference signal of the base station, greater than a predetermined threshold value.
9. The base station of claim 8 , wherein the controller is further configured to perform, in case that the first resource is not included in the second resource, decoding on the HARQ information including acknowledgement (ACK) or the NACK information.
10. The base station of claim 9 , wherein the controller is further configured to determine that the HARQ information includes the NACK information regardless of whether the HARQ information includes the ACK or the NACK information, in case that the first resource is included in the second resource.
11. A base station for a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
identify, in case that downlink data for a terminal is to be transmitted in a first subframe, a first resource used for a transmission of acknowledgement (ACK) or negative acknowledgement (NACK) information corresponding to the downlink data which is received on a physical uplink control channel (PUCCH);
identify whether the first resource is to be included in a second resource; and
transmit, to the terminal via the transceiver, the downlink data in a second subframe following the first subframe, in case that the first resource is to be included in the second resource,
wherein the second resource is multiplexed with a device-to-device (D2D) communication resource used by at least one terminal with a reference signal received power (RSRP) value, measured for a reference signal of the base station, greater than a predetermined threshold value.
12. The base station of claim 11 , wherein the controller is further configured to transmit, to the terminal, the downlink data in the first subframe, in case that the first resource is not to be included in the second resource.
13. A base station for a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
identify, a first resource used for a transmission of uplink data transmitted from a terminal on a physical uplink shared channel (PUSCH), based on first downlink control information;
identify whether the first resource is to be included in a second resource;
adjust, in case that the first resource is to be included in the second resource, modulation and coding scheme (MCS) level information included in the first downlink control information; and
transmit, to the terminal via the transceiver, second downlink control information including the adjusted MCS level information,
wherein the second resource is multiplexed with a device-to-device (D2D) communication resource used by at least one terminal with a reference signal received power (RSRP) value, measured for a reference signal of the base station, greater than a predetermined threshold value.
14. The base station of claim 13 , wherein the controller is further configured to transmit, to the terminal via the transceiver, the second downlink control information including the MCS level information, in case that the first resource corresponding to the PUSCH is not to be included in the second resource.