Patent ID: 11122530

Abstract:
The present disclosure relates to a sensor network, machine type communication (MTC), machine-to-machine (M2M) communication, and technology for interne of things (IoT). The present disclosure may be applied to intelligent services based on the above technologies, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure provides a method of synchronizing device to device (D2D) terminals. Under partial coverage (PC) scenarios, an in coverage user equipment (ICUE) may send a D2D synchronization signal (D2DSS) and a physical sidelink broadcast channel (PSBCH) on synchronization resources of a cell to implement mutual discovery of an ICUE and an out of coverage user equipment (OCUE) when a condition for triggering the D2DSS is satisfied.