Method for transmitting and receiving signal in wireless communication system and apparatus supporting same
AssigneeLG Electronics Inc.
InventorsSeonwook Kim, Suckchel Yang, Changhwan Park
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Abstract
In the present disclosure, in a wireless communication system: a base station transmits, to a terminal, a downlink signal in a first cell; the terminal receives the signal and executes a channel access procedure (CAP); on the basis of the CAP, the terminal transmits, to the base station, a hybrid automatic repeat and request acknowledgement (HARQ-ACK) in a second cell included in an unlicensed band; the base station receives the signal; and the terminal and the base station are able to adjust a CWS.
Claims15
A method of operating a user equipment (UE) in a wireless communication system, the method comprising:
- receiving a downlink signal in a first cell from a base station (BS);
- performing a channel access procedure (CAP);
- transmitting a hybrid automatic repeat and request acknowledgment (HARQ-ACK) to the BS in a second cell configured in an unlicensed band based on the CAP;
- and
- adjusting a contention window size (CWS),
- wherein the CWS is adjusted based on (i) the downlink signal, (ii) whether the first cell and the second cell are identical, and (iii) a determination as to whether the BS has successfully received the HARQ-ACK.
An apparatus configured to operate in a wireless communication system, the apparatus comprising:
- a memory;
- and
- at least one processor connected to the memory,
- wherein the at least one processor is configured to:
- receive a downlink signal in a first cell from a base station (BS);
- perform a channel access procedure (CAP);
- transmit a hybrid automatic repeat and request acknowledgment (HARQ-ACK) to the BS in a second cell configured in an unlicensed band based on the CAP;
- and
- adjust a contention window size (CWS), and
- wherein the CWS is adjusted based on (i) the downlink signal, (ii) whether the first cell and the second cell are identical, and (iii) a determination as to whether the BS has successfully received the HARQ-ACK.
An apparatus configured to operate in a wireless communication system, the apparatus comprising:
- a memory;
- and
- at least one processor connected to the memory,
- wherein the at least one processor is configured to:
- transmit a downlink signal in a first cell to a user equipment (UE);
- receive a hybrid automatic repeat and request acknowledgment (HARQ-ACK) from the UE in a second cell configured in an unlicensed band based on a channel access procedure (CAP);
- and
- adjust a contention window size (CWS) for the CAP, and
- wherein the CWS is adjusted based on (i) the downlink signal, (ii) whether the first cell and the second cell are identical, and (iii) a determination as to whether the HARQ-ACK has been successfully received.
Dependencies are inferred from the claim text.