Method and apparatus to enable multi-resolution CSI reporting in advanced wireless communication systems
AssigneeSamsung Electronics Co., Ltd.
InventorsMd. Saifur Rahman, Eko Onggosanusi
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Abstract
A method of user equipment (UE) for channel state information (CSI) feedback in a wireless communication system. The method comprises receiving, from a base station (BS), CSI feedback configuration information for a pre-coding matrix indicator (PMI) feedback indicating a linear combination (LC) pre-coding matrix that corresponds to a linear combination of a plurality of L beams and a plurality of coefficients, determining the first PMI (i1) and the second PMI (i2), and transmitting, to the BS, the CSI feedback including the first PMI (i1) and the second PMI (i2) over an uplink channel.
Claims20
A user equipment (UE) for channel state information (CSI) feedback in a wireless communication system, the UE comprising:
- a transceiver configured to receive, from a base station (BS), configuration information for the CSI feedback, the CSI feedback including pre-coding matrix indicator (PMI) information indicating a pre-coding matrix that corresponds to a sum of L quantities, wherein:
- each of the L quantities is a product of a beam and a coefficient,
- the coefficients comprise at least an amplitude coefficient and a phase coefficient,
- the PMI information includes common components for all layers of a plurality of layers and independent components for each of the plurality of layers, and
- the plurality of layers is determined based on a value υ associated with a rank indicator (RI);
- and
- at least one processor configured to determine the PMI information including a first PMI (i1) and a second PMI (i2),
- wherein the transceiver is further configured to transmit, to the BS, the CSI feedback including the first PMI (i1) and the second PMI (i2) over an uplink channel.
A method of user equipment (UE) for channel state information (CSI) feedback in a wireless communication system, the method comprising:
- receiving, from a base station (BS), configuration information for the CSI feedback, the CSI feedback including pre-coding matrix indicator (PMI) information indicating a pre-coding matrix that corresponds to a sum of L quantities, wherein:
- each of the L quantities is a product of a beam and a coefficient,
- the coefficients comprises at least an amplitude coefficient and a phase coefficient,
- the PMI information includes common components for all layers of a plurality of layers and independent components for each of the plurality of layers, and
- the plurality of layers is determined based on a value υ associated with a rank indicator (RI);
- determining the PMI information including a first PMI (i1) and a second PMI (i2);
- and
- transmit, to the BS, the CSI feedback including the first PMI (i1) and the second PMI (i2) over an uplink channel.
A base station (BS) for channel state information (CSI) feedback in a wireless communication system, the BS comprising:
- a transceiver configured to:
- transmit, to a user equipment (UE), configuration information for the CSI feedback, the CSI feedback including pre-coding matrix indicator (PMI) information indicating a pre-coding matrix that corresponds to a sum of L quantities, wherein:
- each of the L quantities is a product of a beam and a coefficient,
- the coefficients comprises at least an amplitude coefficient and a phase coefficient,
- the PMI information includes common components for all layers of a plurality of layers and independent components for each of the plurality of layers, and
- the plurality of layers is determined based on a value υ associated with a rank indicator (RI);
- and
- receive, from the UE, the CSI information including a first PMI (i1) and a second PMI (i2) over an uplink channel;
- and
- at least one processor configured to reconstruct the pre-coding matrix indicated by the first PMI (i1) and the second PMI (i2).
Dependencies are inferred from the claim text.