FIG. 1 illustrates an exemplary V2X communication network 100 in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure. As shown in FIG. 1, multiple UEs 101, 102, 103 in the V2X communication network 100 can communicate based on sidelinks connecting each pair of the UEs. That is, traffic data is not forwarded through the base station (BS) 110 or the core network 120, but directly sent from a source UE through the air interface to a target UE. This V2X communication is referred to as sidelink-based V2X communication. An eV2X (evolved V2X) system poses a higher demand for the data rate of sidelink communications. As such, the present teaching discloses methods for a UE to support a high data rate, e.g. a modulation scheme of 64 QAM in sidelink communications in V2X or D2D networks.
