FIELD: information technology.
SUBSTANCE: method includes: generating a pseudo-random sequence according to a pseudo-random sequence initial value, performing a quadrature phase-shift keying (QPSK) modulation on the pseudo-random sequence, and obtaining a first CSI-RS sequence according to maximum bandwidth of system; and cutting the first CSI-RS sequence according to the actual bandwidth of the system, obtaining a second CSI-RS sequence, and mapping the second CSI-RS sequence to a time-frequency location of a CSI-RS antenna port. The CSI-RS sequence can be generated or obtained respectively at the user equipment (UE) and base station terminal (eNB) in accordance with the stated methods for generating and mapping the reference sequence according to known parameters by the present invention, so that the calculated CSI-RS sequence can be utilised to measure the channel at the UE.
EFFECT: meeting channel state information reference signal requirements.
30 cl, 9 dwg
