Transmission of reference signals from a terminal device
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSven PETERSSON, Fredrik ATHLEY, Andreas NILSSON, Roy TIMO, Xinlin ZHANG
Life of this patent
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Abstract
There is provided mechanisms for transmission of reference signals. A method is performed by a terminal device. The terminal device comprises at least two physical antenna ports. The method comprises obtaining channel information. The method comprises determining, for at least one given precoder in a codebook, an uplink reference signal to physical antenna port mapping based on the channel information. The method comprises transmitting uplink reference signals in the physical antenna ports according to the determined mapping.
Claims20
A method for transmission of reference signals, the method being performed by a terminal device, the terminal device comprising at least two physical antenna ports, the method comprising:
- determining a mapping between an uplink reference signal and a physical antenna port;
- and
- based on the determined mapping, transmitting an uplink reference signal using one or more of said at least two physical antenna ports.
A terminal device for transmission of reference signals, the terminal device comprising at least two physical antenna ports and processing circuitry, the processing circuitry being configured to cause the terminal device to:
- determine a mapping between an uplink reference signal and a physical antenna port;
- and
- based on the determined mapping, transmit an uplink reference signal using one or more of said at least two physical antenna ports.
A computer program product comprising a non-transitory computer readable medium storing a computer program comprising instructions which, when run on processing circuitry of a terminal device comprising at least two physical antenna ports causes the terminal device to:
- determine a mapping between an uplink reference signal and a physical antenna port;
- and
- based on the determined mapping, transmit an uplink reference signal using one or more of said at least two physical antenna ports.
Dependencies are inferred from the claim text.