Sidelink channel will be used for device to device (D2D) communication. Most probably Side link channel will be based on SC-FDMA and intention is to enable D2D with minimal/no changes in radio interface. TDD mode would be preferred choice for Side Link channel. Side link channel will be used only if device is not in communication with eNodeB. In other words, if Uplink hardware is not being used for eNodeB communication.
sidelink channel is basically for device to device communication ,there are three scenario it will use out of coverage(No EnodeB), in-Coverage(With EnodeB), and Partial coverage (means one ue will be incoverage while other is out of coverage.)
If sidelink channel uses UL resource then who will schedule this resource?If ENB schedules then how it will be UE to UE communication?
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 ?
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?
Messages on sidelink (pc5) are unicasted or broadcasted in v2x communication? If broadcasting then which mechanism is used for broadcasting?
