Before sidelink communication (data transmission on PSSCH) happens between UE's, is it sidelink discovery needs to happen? Does the V2x sidelink communication needs discovery?
UE gets DCI format 5/5A for sidelink grant from Enb in PDCCH. Then UE constructs SCI0/SCI1 and transmits on PSCCH to indicate PSSCH resources and MCS etc., How receiving UE knows where to listen for PSCCH in sidelink communication ?
