Methods and devices for determining precoder parameters in a wireless communication network
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSebastian FAXÉR, Svante BERGMAN
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Abstract
A method and a device for determining parameters of a precoder in a wireless communication system are disclosed. According to one aspect, a method includes selecting a subset of beams corresponding to a plurality of orthogonal beams; obtaining power levels of the selected subset of beams for generating a first factor of the precoder and obtaining phases of the selected subset of beams for generating a second factor, wherein the first factor and the second factor are part of the parameters of the precoder.
Claims32
A method for a wireless device for determining parameters of a precoder, in a wireless communication system, the method comprising:
- selecting a subset of beams from a plurality of orthogonal beams;
- obtaining power levels of the selected subset of beams for generating a first factor of the precoder;
- and
- obtaining phases of the selected subset of beams for generating a second factor of the precoder;
- wherein the first factor and the second factor are part of the parameters of the precoder.
A wireless device for determining parameters of a precoder, in a wireless communication system, the wireless device comprising a processing circuitry configure to:
- select a subset of beams from a plurality of orthogonal beams;
- obtain power levels of the selected subset of beams for generating a first factor of the precoder;
- and
- obtain phases of the selected subset of beams for generating a second factor of the precoder;
- wherein the first factor and the second factor are part of the parameters of the precoder.
A method for determining transmission parameters in a wireless communication system, the method comprising:
- responsive to transmitting reference signals to the wireless device, receiving precoder parameters which include a subset of beams selected from a plurality of orthogonal beams, a first factor associated with power levels of the selected subset of beams, and a second factor associated with phases of the selected subset of beams;
- and
- determining the transmission parameters based on the received precoder parameters.
A network node for determining transmission parameters in a wireless communication system, the network node comprising a processing circuitry configured to cause the network node to:
- responsive to transmitting reference signals to the wireless device, receive precoder parameters which include a subset of beams selected from a plurality of orthogonal beams, a first factor associated with power levels of the selected subset of beams, and a second factor associated with phases of the selected subset of beams;
- and
- determine the transmission parameters based on the received precoder parameters.
Dependencies are inferred from the claim text.