Method and user equipment for receiving downlink signal, and method and base station for transmitting downlink signal
Provided is a device and method for transmitting or receiving an uplink channel or a downlink channel. In a wireless communication system, a user equipment: receives a physical downlink control channel (PDCCH) for the user equipment in subframe n; and repeatedly transmits a physical uplink shared channel (PUSCH) corresponding to the PDCCH within D subframe(s) out of every P subframes from subframe n+k, wherein each of k, D, and P is a positive integer, and P may be a predefined value greater than D.
1. A method of receiving a downlink (DL) signal by a user equipment (UE) in a wireless communication system, the method comprising:
receiving DL subframe information regarding first subframes available for DL transmissions for the UE among DL subframes of a frequency band, where the first subframes are part of the DL subframes of the frequency band;
receiving a physical downlink control channel (PDCCH) for the UE on the frequency band; and
repeatedly receiving a physical downlink shared channel (PDSCH) on the frequency band based on the PDCCH,
wherein the PDCCH is repeatedly received on the frequency band,
wherein each of the repeatedly received PDCCH and PDSCH is repeated only within the first subframes on the frequency band,
wherein the repeatedly received PDSCH is present within subframes other than subframes including the repeatedly received PDCCH among the first subframes, and
wherein the first subframes occur by Y subframes with a periodicity of X subframes, where Y and X are positive integer values determined based on the DL subframe information, and X is greater than Y.
2. The method of claim 1 , wherein the PDCCH is not received while the UE transmits uplink (UL) channels.
3. The method of claim 1 , wherein the first subframes are specific to a coverage enhancement level of the UE.
4. The method of claim 1 , wherein the frequency band has a limited bandwidth including only one resource block in a frequency domain.
5. A user equipment (UE) for receiving a downlink (DL) signal in a wireless communication system, the UE comprising:
a transmitter and a receiver; and
a processor; and
a computer memory storing at least one program which, when executed, causes the processor to perform operations comprising:
receiving, via the receiver, DL subframe information regarding first subframes available for DL transmissions for the UE among DL subframes of a frequency band, where the first subframes are part of the DL subframes of the frequency band;
receiving, via the receiver, a physical downlink control channel (PDCCH) for the UE on the frequency band; and
repeatedly receiving, via the receiver, a physical downlink shared channel (PDSCH) on the frequency band based on the PDCCH,
wherein the PDCCH is repeatedly received on the frequency band,
wherein each of the repeatedly received PDCCH and PDSCH is present only within the first subframes on the frequency band,
wherein the repeatedly received PDSCH is present within subframes other than subframes including the repeatedly received PDCCH among the first subframes, and
wherein the first subframes occur by Y subframes with a periodicity of X subframes, where Y and X are positive integer values determined based on the DL subframe information, and X is greater than Y.
6. The UE of claim 5 , wherein the PDCCH is not received while the UE transmits uplink (UL) channels.
7. The UE of claim 5 , wherein the first subframes are specific to a coverage enhancement level of the UE.
8. The UE of claim 5 , wherein the frequency band has a limited bandwidth including only one resource block in a frequency domain.
9. A method of transmitting a downlink (DL) signal by a base station (BS) in a wireless communication system, the method comprising:
transmitting DL subframe information regarding first subframes available for DL transmissions for a user equipment (UE) among DL subframes of a frequency band, where the first subframes are part of the DL subframes of the frequency band;
transmitting a physical downlink control channel (PDCCH) for the UE on the frequency band; and
repeatedly transmitting a physical downlink shared channel (PDSCH) on the frequency band based on the PDCCH,
wherein the PDCCH is repeatedly transmitted on the frequency band,
wherein each of the repeatedly transmitted PDCCH and PDSCH is present only within the first subframes on the frequency band,
wherein the repeatedly transmitted PDSCH is present within subframes other than subframes including the repeatedly transmitted PDCCH among the first subframes, and
wherein the first subframes occur by Y subframes with a periodicity of X subframes, where Y and X are positive integer values determined based on the DL subframe information, and X is greater than Y.
10. The method of claim 9 , wherein the first subframes are specific to a coverage enhancement level of the UE.
11. The method of claim 9 , wherein the frequency band has a limited bandwidth including using only one resource block in a frequency domain.
12. A base station (BS) for transmitting a downlink (DL) signal in a wireless communication system, the BS comprising:
a transmitter and a receiver,
a processor;
a computer memory storing at least one program which, when executed, causes the processor to perform operations comprising:
transmitting, via the transmitter, DL subframe information regarding first subframes available for DL transmissions for a user equipment (UE) among DL subframes of a frequency band, where the first subframes are part of the DL subframes of the frequency band;
transmitting, via the transmitter, a physical downlink control channel (PDCCH) for the UE on the frequency band; and
repeatedly transmitting, via the transmitter, a physical downlink shared channel (PDSCH) on the frequency band based on the repeatedly received PDCCH,
wherein the PDCCH is repeatedly transmitted on the frequency band,
wherein each of the repeatedly transmitted PDCCH and PDSCH is present only within the first subframes on the frequency band,
wherein the repeatedly transmitted PDSCH is present within subframes other than subframes including the repeatedly transmitted PDCCH among the first subframes, and
wherein the first subframes occur by Y subframes with a periodicity of X subframes, where Y and X are positive integer values determined based on the DL subframe information, and X is greater than Y.
13. The BS of claim 12 , wherein the first subframes are specific to a coverage enhancement level of the UE.
14. The BS of claim 12 , wherein the frequency band has a limited bandwidth including only one resource block in a frequency domain.