New radio (nr) vehicle to everything (v2x) methods for sensing and resource allocation

Abstract

A wireless transmit receive unit (WTRU) may determine a set of selectable resources by performing resource reevaluation based on a set of previously selected resources. The WTRU may select at least one first resource from the set of previously selected resources. The at least one first resource may not be in the set of selectable resource. The WTRU may replace the first resource with at least one second resource. The at least one second resource may be in the set of selectable resource. The WTRU may select at least one third resource from the set of selectable resources based on an association with the at least one second resource. The WTRU may then transmit a first transport block (TB) using the at least one second resource. Also, the association with the at least one first resource may be based on at least one of a HARQ status or a grant.

1 - 20 . (canceled) 
     
     
         21 . A method for use in a wireless transmit receive unit (WTRU), the method comprising:
 receiving first data on a first physical sidelink shared channel (PSSCH) transmission;   transmitting second data on a second PSSCH transmission; and   at least one of transmitting, on a first physical sidelink feedback channel (PSFCH) transmission, first hybrid automatic repeat request (HARQ) acknowledgement (ACK)/negative ACK (HACK) feedback associated with the first data, or receiving, on a second PSFCH transmission, second HARQ ACK/NACK feedback associated with the second data, in a slot based on a first priority associated with the first data and a second priority associated with the second data.   
     
     
         22 . The method of  claim 21 , further comprising: receiving first sidelink control information (SCI) associated with the first PSSCH transmission. 
     
     
         23 . The method of  claim 21 , further comprising:
 transmitting second SCI associated with the second PSSCH.   
     
     
         24 . The method of  claim 21 , wherein the first priority is based on a first priority value. 
     
     
         25 . The method of  claim 24 , wherein the first priority value is received in third SCI. 
     
     
         26 . The method of  claim 24 , wherein the second priority is based on a second priority value. 
     
     
         27 . The method of  claim 26 , wherein the second priority value is received in fourth SCI. 
     
     
         28 . The method of  claim 21 , wherein the first priority is based on a first quality of service (QoS). 
     
     
         29 . The method of  claim 21 , wherein the second priority is based on a second QoS. 
     
     
         30 . The method of  claim 21 , wherein both the first HARQ ACK/NACK feedback and the second HARQ ACK/NACK feedback are prioritized and transmitted based on the first priority and the second priority. 
     
     
         31 . A wireless transmit/receive unit (WTRU) comprising:
 a transceiver; and   a processor operatively coupled to the transceiver; wherein:
 the transceiver is configured to receive first data on a first physical sidelink shared channel (PSSCH) transmission; 
 the transceiver and the processor are configured to transmit second data on a second PSSCH transmission; and 
 the transceiver and the processor are configured to at least one of transmit, on a first physical sidelink feedback channel (PSFCH) transmission, first hybrid automatic repeat request (HARQ) acknowledgement (ACK)/negative ACK (NACK) feedback associated with the first data, or receive, on a second PSFCH transmission, second HARQ ACK/NACK feedback associated with the second data, in a slot based on a first priority associated with the first data and a second priority associated with the second data. 
   
     
     
         32 . The WTRU of  claim 31 , wherein the transceiver is further configured to receive first sidelink control information (SCI) associated with the first PSSCH transmission. 
     
     
         33 . The WTRU of  claim 31 , wherein the transceiver and the processor are further configured to transmit second SCI associated with the second PSSCH. 
     
     
         34 . The WTRU of  claim 31 , wherein the first priority is based on a first priority value. 
     
     
         35 . The WTRU of  claim 34 , wherein the first priority value is received in third SCI. 
     
     
         36 . The WTRU of  claim 34 , wherein the second priority is based on a second priority value. 
     
     
         37 . The WTRU of  claim 36 , wherein the second priority value is received in fourth SCI. 
     
     
         38 . The WTRU of  claim 31 , wherein the first priority is based on a first quality of service (QoS). 
     
     
         39 . The WTRU of  claim 31 , wherein the second priority is based on a second QoS. 
     
     
         40 . The WTRU of  claim 31 , wherein both the first HARQ ACK/NACK feedback and the second HARQ ACK/NACK feedback are prioritized and transmitted based on the first priority and the second priority.