Patent ID: 9686110
Date: 2017-06-20
CPC Classifications: H04L

Claim:
1. A method of transmitting, by a user equipment (UE), an uplink signal in a wireless access system, the method comprising: receiving configuration information regarding a plurality of parameter set candidates related to a reference signal for demodulation of a physical uplink shared channel (PUSCH); receiving downlink control information (DCI) including a predetermined field set to a specific index from among a plurality of indices, the specific index indicating a specific cyclic shift (CS) set from among a plurality of CS sets, a specific orthogonal cover code (OCC) set from among a plurality of OCC sets and a specific parameter set from among the plurality of parameter set candidates; generating a sequence of the reference signal using the specific CS set, the specific OCC set and the specific parameter set and transmitting the generated reference signal sequence to a base station (BS), wherein the plurality of parameter set candidates have a mapping relation to the plurality of CS sets and the plurality of OCC sets such that a minimum distance between CS parameters for a layer in CS sets to which a same parameter set candidate among the plurality of parameter set candidates is mapped is maximized, and wherein the specific parameter set includes information on each of: