Method for supporting full duplex radio (FDR) operation in wireless communication system and apparatus therefor
AssigneeLG Electronics Inc.
InventorsJonghyun Park, Suckchel Yang, Hyukjin Chae
Life of this patent
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Abstract
According to one embodiment of the present invention a method for transmitting and receiving a wireless signal of a base station in a wireless communication system, comprises the steps of: performing a first CCA for an unlicensed band; transmitting an UL grant for PUSCH transmission of a first user equipment when the idle state of the unlicensed band, resulting from the first CCA performance, is detected; and receiving the PUSCH from the first user equipment through the unlicensed band at a preset point of time after transmitting the UL grant, and simultaneously transmitting a DL grant for PDSCH transmission to a second user equipment.
Claims12
A method for transmitting and receiving a wireless signal of a base station in a wireless communication system, the method comprising:
- performing a first clear channel assessment (CCA) regarding an unlicensed band;
- transmitting, when an idle state of the unlicensed band is detected as a result of performing the first CCA, an uplink (UL) grant for transmission of a physical uplink shared channel (PUSCH) of a first user equipment (UE),
- wherein the first UE is a UE transmitting a first reservation signal for occupying the unlicensed band for a preset time, after receiving the UL grant;
- transmitting, to another UE, a downlink (DL) grant including information indicating whether to transmit the first reservation signal of the first UE;
- and
- receiving the PUSCH from the first UE through the unlicensed band at the preset time after transmission of the UL grant and simultaneously transmitting a DL grant for transmission of a physical downlink shared channel (PDSCH) to a second UE.
A base station of a wireless communication system, the base station comprising:
- a transmitter and receiver configured to transmit and receive a wireless signal;
- and
- a processor configured to control the transmitter and receiver, wherein the processor is further configured to:
- perform a first clear channel assessment (CCA) regarding an unlicensed band, transmit an uplink (UL) grant for transmission of a physical uplink shared channel (PUSCH) of a first user equipment (UE) when an idle state of the unlicensed band is detected as a result of performing the first CCA,
- wherein the first UE is a UE transmitting a first reservation signal for occupying the unlicensed band for a preset time, after receiving the UL grant,
- transmit, to another UE, a downlink (DL) grant including information indicating whether to transmit the first reservation signal of the first UE, and
- receive the PUSCH from the first UE through the unlicensed band at the preset time after transmission of the UL grant and simultaneously transmit a DL grant for transmission of a physical downlink shared channel (PDSCH) to a second UE.
Dependencies are inferred from the claim text.