Apparatus and method for transmitting and receiving signals in wireless communication system
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. In a wireless communication system according to an embodiment, a signal transmission method of a transmitting apparatus includes determining a phase for each predetermined frequency band unit, applying the determined phase to a signal generated for each predetermined frequency band unit, and transmitting the signal.
1. A signal transmission method of a transmitting apparatus in a wireless communication system, the method comprising:
determining a plurality of phases for a plurality of frequency band units in a component carrier (CC);
applying the determined plurality of phases to signals generated for the plurality of frequency band units; and
transmitting the signals,
wherein each of the determined plurality of phases is applied to a signal of a corresponding frequency band unit among the plurality of frequency band units, and
wherein each of the plurality of frequency band unit is a resource element group (REG) unit in an arbitrary CC.
2. The method of claim 1 ,
wherein a same sequence is used to generate the signals for the plurality of frequency band units,
wherein the plurality of frequency band units increase a peak to average power ratio (PAPR) of the signals more than a threshold, and
wherein the plurality of phases are determined to reduce the PAPR of the signals.
3. The method of claim 1 , further comprising:
determining signal generation information to generate a time domain signal for the plurality of frequency band units based on the signals; and
generating the time domain signal for the plurality of frequency band units, based on the signal generation information.
4. The method of claim 3 , further comprising:
transmitting the signal generation information to a receiving apparatus before transmitting the generated time domain signal to the receiving apparatus,
wherein the signal generation information is transmitted to the receiving apparatus through a radio resource control (RRC) message.
5. The method of claim 1 , further comprising:
determining a plurality of phases for a plurality of CCs including the CC; and
applying the plurality of phases for the plurality of CCs to each of the CCs.
6. A transmitting apparatus in a wireless communication system, the transmitting apparatus comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
determine a plurality of phases for a plurality of frequency band units in a component carrier (CC),
apply the determined plurality of phases to signals generated for the plurality of frequency band units, and
control the transceiver to transmit the signals,
wherein each of the determined plurality of phases is applied to a signal of a corresponding frequency band unit among the plurality of frequency band units, and
wherein each of the plurality of frequency band unit is a resource element group (REG) unit in an arbitrary CC.
7. The transmitting apparatus of claim 6 ,
wherein a same sequence is used to generate the signals for the plurality of frequency band units,
wherein the plurality of frequency band units increase a peak to average power ratio (PAPR) of the signals more than a threshold, and
wherein the plurality of phases are determined to reduce the PAPR of the signals.
8. The transmitting apparatus of claim 6 , wherein the controller is further configured to:
determine signal generation information to generate a time domain signal for the plurality of frequency band units based on the signals, and
generate the time domain signal for the plurality of frequency band units, based on the signal generation information.
9. The transmitting apparatus of claim 8 ,
wherein the controller is further configured to control the transceiver to transmit the signal generation information to a receiving apparatus before transmitting the generated time domain signal to the receiving apparatus, and
wherein the signal generation information is transmitted to the receiving apparatus through a radio resource control (RRC) message.
10. The transmitting apparatus of claim 9 , wherein the controller is further configured to:
determine a plurality of phases for a plurality of CCs including the CC, and
apply the plurality of phases for the plurality of CCs to each of the CCs.
11. A signal reception method of a receiving apparatus in a wireless communication system, the method comprising:
receiving a signal from a transmitting apparatus; and
decoding the signal,
wherein a plurality of phases determined for a plurality of frequency band units in a component carrier (CC) are applied to the signal generated for the plurality of frequency band units,
wherein each of the determined plurality of phases is applied to a signal of a corresponding frequency band unit among the plurality of frequency band units,
wherein each of the plurality of frequency band unit is a resource element group (REG) unit in an arbitrary CC, and
wherein the signal is decoded based on the plurality of phases.
12. The method of claim 11 ,
wherein signal generation information is received through a radio resource control (RRC) message,
wherein the signal is decoded based on the signal generation information, and
wherein the signal generation information is received from a transmitting apparatus before the signal generated for each of the plurality of frequency band units is received from the transmitting apparatus.
13. The method of claim 11 ,
wherein a same sequence is used to generate the signal for the plurality of frequency band units,
wherein the plurality of frequency band units increase a peak to average power ratio (PAPR) of the signal more than a threshold, and
wherein the plurality of phases are determined to reduce the PAPR of the signal.
14. The method of claim 11 ,
wherein a plurality of phases determined for a plurality of CCs including the CC is applied to each of the CCs, and
wherein the signal is decoded based on the plurality of phases for the plurality of CCs.
15. A receiving apparatus in a wireless communication system, the receiving apparatus comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
control the transceiver to receive a signal from a transmitting apparatus, and
decode the signal,
wherein a plurality of phases determined for a plurality of frequency band units in a component carrier (CC) are applied to the signal generated for the plurality of frequency band units,
wherein each of the determined plurality of phases is applied to a signal of a corresponding frequency band unit among the plurality of frequency band units,
wherein each of the plurality of frequency band unit is a resource element group (REG) unit in an arbitrary CC, and
wherein the signal is decoded based on the plurality of phases.
16. The receiving apparatus of claim 15 ,
wherein signal generation information is received through a radio resource control (RRC) message,
wherein the signal is decoded based on the signal generation information, and
wherein the controller is further configured to control the transceiver to receive the signal generation information from a transmitting apparatus before the signal generated for each of the plurality of frequency band units is received from the transmitting apparatus.
17. The receiving apparatus of claim 15 ,
wherein a same sequence is used to generate the signal for the plurality of frequency band units,
wherein the plurality of frequency band units increase a peak to average power ratio (PAPR) of the signal more than a threshold, and
wherein the plurality of phases are determined to reduce the PAPR of the signal.
18. The receiving apparatus of claim 15 ,
wherein a plurality of phases determined for a plurality of CCs including the CC is applied to each of the CCs, and
wherein the signal is decoded based on the plurality of phases for the plurality of CCs.