| 摘要 |
Various embodiments are directed to methods and apparatus efficiently utilizing WAN system resources that would otherwise go unused for device to device communications. In one exemplary embodiment the air link resources correspond to Guard Periods (GPs) in Special Sub-Frames of an LTE TDD WAN system. In various embodiments, wireless communications devices (106, 108, 110, 112, 114, 116) e.g., UE devices with device to device communications capability, self-configure to operate using a portion of the GP such as not to interfere with ongoing WAN signaling. Thus the WAN signaling and device to device signaling do not interfere with respect to one another. The D2D device receives from the eNB information concerning the GP duration and the maximum propagation delay in both the WAN and D2D cases and configures based on these informations the transmission and reception timing offsets and the cyclic prefix length for the D2D link. |
