Patent ID: 8750230
Filing Date: 2014-06-10
Classification: H04L,H04W

Abstract:
1. A method in a base station for enabling a user equipment to transmit a configured demodulation reference signal when being served by the base station, the method comprising: assigning at least one of a UE-specific base sequence and a UE-specific cyclic shift hopping pattern to the user equipment, and sending at least one configuration parameter to the user equipment, said at least one configuration parameters indicating the assigned at least one of said UE-specific base sequence and UE-specific cyclic shift hopping pattern, to enable the user equipment to use said at least one configuration parameters to generate and transmit the demodulation reference signal based on the at least one of said UE-specific base sequence and UE-specific cyclic shift hopping pattern, wherein said at least one configuration parameter comprises at least one of a UE-specific base sequence parameter Δ