Apple Inc.
Demodulation reference signal (DMRS) sequence design for device-to-device (D2D) discovery

Abstract:

Technology for a user equipment (UE) operable to perform device-to-device (D2D) communication is disclosed. The UE can select a cyclic shift (n.sub.CS) that is randomly selected from a set of cyclic shifts. The set of cyclic shifts can include cyclic shift values of {0, 3, 6, 9}. The UE can apply the selected cyclic shift to all demodulation reference signals (DM-RSs) in a subframe. Each of the DM-RSs can be associated with a D2D transmission from the UE. The UE can encode the DM-RSs for transmission from the UE.