Resource allocation method and apparatus in wireless communication system

Abstract

An operating method of a terminal in a wireless communication system is provided. The method includes acquiring resource pool information for sidelink communication, receiving, from another terminal, a physical sidelink shared channel (PSSCH), and reporting, to the another terminal, a hybrid automatic request (HARQ) feedback information corresponding to the receiving of the PSSCH, based on physical sidelink feedback channel (PSFCH) configuration information included in the resource pool information.

What is claimed is: 
     
         1 . A method performed by a first terminal in a wireless communication system, the method comprising:
 transmitting, to a second terminal, a physical sidelink control channel (PSCCH);   transmitting, to the second terminal, a physical sidelink shared channel (PSSCH) scheduled by the PSCCH; and   receiving, from the second terminal, a physical sidelink feedback channel (PSFCH) corresponding to the PSSCH,   wherein an orthogonal frequency division multiplexing (OFDM) symbol following the PSSCH is a first guard symbol and an OFDM symbol following the PSFCH is a second guard symbol.   
     
     
         2 . The method of  claim 1 , wherein the PSFCH is received in two OFDM symbols. 
     
     
         3 . The method of  claim 2 , wherein a first OFDM symbol of the two OFDM symbols is repeated in a second OFDM symbol of the two OFDM symbols. 
     
     
         4 . The method of  claim 1 , wherein feedback information for the PSSCH which is based on a sequence is mapped to resource elements (REs) of the PSFCH and a demodulation reference signal (DMRS) is not mapped to the REs of the PSFCH. 
     
     
         5 . The method of  claim 4 ,
 wherein the feedback information is based on a first sequence or a second sequence, and   wherein the first sequence corresponds to a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) and the second sequence corresponds to an HARQ-negative acknowledgement (NACK).   
     
     
         6 . A method performed by a second terminal in a wireless communication system, the method comprising:
 receiving, from a first terminal, a physical sidelink control channel (PSCCH);   receiving, from the first terminal, a physical sidelink shared channel (PSSCH) scheduled by the PSCCH; and   transmitting, to the first terminal, a physical sidelink feedback channel (PSFCH) corresponding to the PSSCH,   wherein an orthogonal frequency division multiplexing (OFDM) symbol following the PSSCH is a first guard symbol and an OFDM symbol following the PSFCH is a second guard symbol.   
     
     
         7 . The method of  claim 6 , wherein the PSFCH is transmitted in two OFDM symbols. 
     
     
         8 . The method of  claim 7 , wherein a first OFDM symbol of the two OFDM symbols is repeated in a second OFDM symbol of the two OFDM symbols. 
     
     
         9 . The method of  claim 6 , wherein feedback information for the PSSCH which is based on a sequence is mapped to resource elements (REs) of the PSFCH and a demodulation reference signal (DMRS) is not mapped to the REs of the PSFCH. 
     
     
         10 . The method of  claim 9 ,
 wherein the feedback information is based on a first sequence or a second sequence, and   wherein the first sequence corresponds to a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) and the second sequence corresponds to an HARQ-negative acknowledgement (NACK).   
     
     
         11 . A first terminal in a wireless communication system, the first terminal comprising:
 a transceiver; and   at least one processor configured to:
 transmit, to a second terminal via the transceiver, a physical sidelink control channel (PSCCH), 
 transmit, to the second terminal via the transceiver, a physical sidelink shared channel (PSSCH) scheduled by the PSCCH, and 
 receive, from the second terminal via the transceiver, a physical sidelink feedback channel (PSFCH) corresponding to the PSSCH, 
   wherein an orthogonal frequency division multiplexing (OFDM) symbol following the PSSCH is a first guard symbol and an OFDM symbol following the PSFCH is a second guard symbol.   
     
     
         12 . The first terminal of  claim 11 , wherein the PSFCH is received in two OFDM symbols. 
     
     
         13 . The first terminal of  claim 12 , wherein a first OFDM symbol of the two OFDM symbols is repeated in a second OFDM symbol of the two OFDM symbols. 
     
     
         14 . The first terminal of  claim 11 , wherein feedback information for the PSSCH which is based on a sequence is mapped to resource elements (REs) of the PSFCH and a demodulation reference signal (DMRS) is not mapped to the REs of the PSFCH. 
     
     
         15 . The first terminal of  claim 14 ,
 wherein the feedback information is based on a first sequence or a second sequence, and   wherein the first sequence corresponds to a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) and the second sequence corresponds to an HARQ-negative acknowledgement (NACK).   
     
     
         16 . A second terminal in a wireless communication system, the second terminal comprising:
 a transceiver; and   at least one processor configured to:
 receive, from a first terminal via the transceiver, a physical sidelink control channel (PSCCH), 
 receive, from the first terminal via the transceiver, a physical sidelink shared channel (PSSCH) scheduled by the PSCCH, and 
 transmit, to the first terminal via the transceiver, a physical sidelink feedback channel (PSFCH) corresponding to the PSSCH, 
   wherein an orthogonal frequency division multiplexing (OFDM) symbol following the PSSCH is a first guard symbol and an OFDM symbol following the PSFCH is a second guard symbol.   
     
     
         17 . The second terminal of  claim 16 , wherein the PSFCH is transmitted in two OFDM symbols. 
     
     
         18 . The second terminal of  claim 17 , wherein a first OFDM symbol of the two OFDM symbols is repeated in a second OFDM symbol of the two OFDM symbols. 
     
     
         19 . The second terminal of  claim 16 , wherein feedback information for the PSSCH which is based on a sequence is mapped to resource elements (REs) of the PSFCH and a demodulation reference signal (DMRS) is not mapped to the REs of the PSFCH. 
     
     
         20 . The second terminal of  claim 19 ,
 wherein the feedback information is based on a first sequence or a second sequence, and   wherein the first sequence corresponds to a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) and the second sequence corresponds to an HARQ-negative acknowledgement (NACK).