Configurable codebook for advanced CSI feedback overhead reduction
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSiva Muruganathan, Sebastian Faxér, Shiwei Gao, Stephen Grant, Robert Mark Harrison
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Abstract
Network nodes, wireless devices and methods of reducing signaling overhead are provided. In one embodiment, a method includes transmitting to the wireless device at least one power threshold parameter to be used by the wireless device to determine a number of beams to be included in a multi-beam precoder codebook and transmitting to the wireless device a signal to interference plus noise ratio (SINR) to be used by the wireless device to determine to use one of a single beam precoder and a multiple beam precoder.
Claims20
A method for a user equipment to adjust uplink signaling overhead, the method comprising:
- receiving first signaling that configures the user equipment with a plurality of power threshold parameters, each of the plurality of power threshold parameters being associated with one of a plurality of transmission ranks, a transmission rank being a number of transmission layers;
- receiving second signaling that configures the user equipment with a first number of beams, N, each beam of the N beams being associated with a respective transmission rank of the plurality of transmission ranks;
- determining N power parameters, each power parameter corresponding to one of the N beams;
- and
- including channel state information, CSI, in a CSI report, the CSI pertaining to a subset of the N beams, each beam of the subset having the determined power parameter above a respective power threshold parameter of the plurality of power threshold parameters, the respective power threshold parameter being associated with the respective transmission rank of the beam.
A user equipment comprising:
- radio circuitry configured to:
- receive first signaling that configures the user equipment with a plurality of power threshold parameters, each of the plurality of power threshold parameters being associated with one of a plurality of transmission ranks, a transmission rank being a number of transmission layers;
- receive second signaling that configures the user equipment with a first number of beams, N, each beam of the N beams being associated with a respective transmission rank of the plurality of transmission ranks;
- processing circuitry in communication with the radio circuitry and configured to:
- determine N power parameters, each power parameter corresponding to one of the N beams;
- and
- include channel state information, CSI, in a CSI report, the CSI pertaining to a subset of the N beams, each beam of the subset having the determined power parameter above a respective power threshold parameter of the plurality of power threshold parameters, the respective power threshold parameter being associated with the respective transmission rank of the beam.
A network node in communication with a user equipment, the network node comprising radio circuitry configured to:
- transmit first signaling that configures the user equipment with a plurality of power threshold parameters, each of the plurality of power threshold parameters being associated with one of a plurality of transmission ranks, a transmission rank being a number of transmission layers;
- transmit second signaling that configures the user equipment with a first number of beams, N, each beam of the N beams being associated with a respective transmission rank of the plurality of transmission ranks;
- and
- receive channel state information, CSI, in a CSI report, the CSI pertaining to a subset of the N beams, each beam of the subset having a determined power parameter above a respective power threshold parameter of the plurality of power threshold parameters, each determined power parameter corresponding to one of the N beams, the respective power threshold parameter being associated with the respective transmission rank of the beam.
Dependencies are inferred from the claim text.