Method and apparatus for transmitting and receiving wireless signal in wireless communication system
AssigneeLG Electronics Inc.
InventorsSuckchel Yang, Byounghoon Kim, Kijun Kim, Joonkui Ahn
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Abstract
The present invention relates to a wireless communication system and, particularly, to a method and an apparatus therefor, the method comprising the steps of: receiving data during a first TTI; transmitting a NACK for the data; and receiving a retransmission signal of the data during a second TTI, wherein a time interval between the first TTI and the second TTI changes according to a TTI length.
Claims16
A method of receiving a downlink signal by a terminal in a wireless communication system, the method comprising:
- receiving data in an allocated time-frequency resource during a first transmission time interval (TTI), wherein the allocated time-frequency resource includes resource elements (REs) corresponding to (i) a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time and (ii) a plurality of subcarriers in frequency;
- and
- transmitting acknowledgement/negative acknowledgement (ACK/NACK) information for the data,
- wherein based on a TTI length related to the first TTI being equal to or larger than a reference value, the data is placed on the allocated time-frequency resource in a way that the data is first placed on REs of a same subcarrier, and then REs of a next subcarrier, and
- wherein based on the TTI length being less than the reference value, the data is placed on the allocated time-frequency resource in a way that the data is first placed on REs of a same OFDM symbol, and then REs of a next OFDM symbol.
A terminal configured to operate in a wireless communication system, the terminal comprising:
- a radio frequency (RF) module;
- at least one processor;
- and
- at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising;
- receiving, through the RF module, data in an allocated time-frequency resource during a first transmission time interval (TTI), wherein the allocated time-frequency resource includes resource elements (REs) corresponding to (i) a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time and (ii) a plurality of subcarriers in frequency;
- and
- transmitting, through the RF module, acknowledgement/negative acknowledgement (ACK/NACK) information for the data,
- wherein based on a TTI length related to the first TTI being equal to or larger than a reference value, the data is placed on the allocated time-frequency resource in a way that the data is first placed on REs of a same subcarrier, and then REs of a next subcarrier, and
- wherein based on the TTI length being less than the reference value, the data is placed on the allocated time-frequency resource in a way that the data is first placed on REs of a same OFDM symbol, and then REs of a next OFDM symbol.
A processing apparatus configured to control a terminal to operate in a wireless communication system, the processing apparatus comprising:
- at least one processor;
- and
- at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
- receiving data in an allocated time-frequency resource during a first transmission time interval (TTI), wherein the allocated time-frequency resource includes resource elements (REs) corresponding to (i) a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time and (ii) a plurality of subcarriers in frequency;
- and
- transmitting acknowledgement/negative acknowledgement (ACK/NACK) information for the data,
- wherein based on a TTI length related to the first TTI being equal to or larger than a reference value, the data is placed on the allocated time-frequency resource in a way that the data is first placed on REs of a same subcarrier, and then REs of a next subcarrier, and
- wherein based on the TTI length being less than the reference value, the data is placed on the allocated time-frequency resource in a way that the data is first placed on REs of a same OFDM symbol, and then REs of a next OFDM symbol.
Dependencies are inferred from the claim text.