Method and apparatus for transmitting a reference signal in a multi-antenna system

摘要

A method is described for transmitting, by a user equipment (UE), a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH) in a wireless communication system. A cyclic shift field is received through a physical downlink control channel (PDCCH) from a base station. The cyclic shift field indicates first, second, third and fourth cyclic shifts, first orthogonal cover code (OCC) and a second OCC. A first DMRS sequences is generated by using the first cyclic shift and the first OCC. A second DMRS sequence is generated by using the second cyclic shift and the first OCC. A third DMRS sequence is generated by using the third cyclic shift and the second OCC. A fourth DMRS sequence is generated by using the fourth cyclic shift and the second OCC. The first, second, third and fourth DMRS sequences are transmitted to the base station.

主权项

1. A method for transmitting, by a user equipment (UE), a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH) in a wireless communication system, the method comprising:
receiving a cyclic shift field through a physical downlink control channel (PDCCH) from a base station, wherein the cyclic shift field indicates first, second, third and fourth cyclic shifts, a first orthogonal cover code (OCC) and a second OCC; generating a first DMRS sequence, which is associated with a first layer, by using the first cyclic shift and the first OCC; generating a second DMRS sequence, which is associated with a second layer, by using the second cyclic shift and the first OCC; generating a third DMRS sequence, which is associated with a third layer, by using the third cyclic shift and the second OCC; generating a fourth DMRS sequence, which is associated with a fourth layer, by using the fourth cyclic shift and the second OCC; and transmitting the first, second, third and fourth DMRS sequences to the base station.