Referring to FIG. 3, in an alternate embodiment of this method of disclosure, network may indicate whether the UE is allowed to use the configured SL grants for all SL LCHs or only the indicated SL LCHs while T310 is running at operations 340 and 350. A presence of a new parameter (UseCGforAllSLLCHs) in an RRC reconfiguration message can indicate that the UE can use CG for all SL LCHs while T310 is running. The new parameter (UseCGforAllSLLCHs) in the RRC reconfiguration message may be set to TRUE to indicate that the UE can use CG for all SL LCHs while T310 is running. If the new parameter (UseCGforAllSLLCCHs) is not present or is set to FALSE, the CG can be used for one or more SL LCH(s) which are allowed (or indicated) to use the configured SL grants at operation 345. For either cases, upon expiry of T310 timer, the UE can use resources from exceptional TX pool for SL transmissions in operation 360. The operations described above in FIG. 2 may be similarly applied to steps not specified in FIG. 3.
Embodiment 1-2
FIG. 4 illustrates a flowchart according to an embodiment of the disclosure.
In one method of this disclosure, the UE operation for SL communication transmission is as shown in FIG. 4.
