Patent ID: 9549427
Date: 2017-01-17
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method performed at a first user equipment (UE) device, the method comprising: communicating with a second UE device over a device-to-device (D2D) communication link using uplink radio resources defined by a communication specification for uplink communication between base stations and wireless communication UE devices, the uplink radio resources including uplink reference signal resources for transmitting uplink reference signals; transmitting data and control signals to the second UE device over the D2D communication link, wherein the transmitting occurs on uplink radio resources other than the uplink reference signal resources; and transmitting a D2D demodulation signal along with the data signals to the second UE device, the D2D demodulation signal used by the second UE device to demodulate the data signals.