Patent ID: 9648484
Date: 2017-05-09
CPC Classifications: H04L,H04W

Claim:
1. A method for performing device-to-device (D2D) discovery in a communications system, the method comprising: determining, by a device-to-device (D2D) device, resource allocation information for a discovery cycle including discovery resources allocated for transmission of discovery signals by D2D devices, wherein the determining the resource allocation information includes receiving, by the D2D device from an evolved NodeB (eNB), a value indicating the number of subframes in the discovery cycle; generating, by the D2D device, a hopping sequence, indexed by a discovery cycle index, using a degree two polynomial function with one of random coefficients and pseudo-random coefficients; selecting, by the D2D device, a first discovery resource of the discovery cycle utilizing the hopping sequence, in accordance with the resource allocation information; and transmitting, by the D2D device, a discovery signal in the selected first discovery resource.