US 2012/0057484 A1 · METHOD AND APPARATUS FOR ESTIMATING DOWNLINK CHANNEL QUALITY

Abstract

The present invention provides a method includes: receiving a downlink channel quality indicator or an interference indicator, where the downlink channel quality indicator or the interference indicator is fed back by a UE; estimating a weak interference noise matrix of the UE according to the downlink channel quality indicator or the interference indicator, where the downlink channel quality indicator or the interference indicator is fed back by the UE; obtaining a time-frequency channel matrix of a serving cell and a time-frequency strong interference matrix of a strong interfering cell, and obtaining a time-frequency interference noise matrix of the UE according to the estimated weak interference noise matrix and the time-frequency strong interference matrix; and estimate downlink channel quality according to the time-frequency channel matrix and the time-frequency interference noise matrix.

Claims16

Dependent claims

A method for estimating downlink channel quality, comprising:

receiving a downlink channel quality indicator or an interference indicator, wherein the downlink channel quality indicator or the interference indicator is fed back by a user equipment (UE);
estimating a weak interference noise matrix of the UE according to the downlink channel quality indicator or the interference indicator, wherein the downlink channel quality indicator or the interference indicator is fed back by the UE;
obtaining a time-frequency channel matrix of a serving cell and a time-frequency strong interference matrix of a strong interfering cell, and obtaining a time-frequency interference noise matrix of the UE according to the estimated weak interference noise matrix and the time-frequency strong interference matrix;
and
estimating downlink channel quality according to the time-frequency channel matrix and the time-frequency interference noise matrix.

2 more elements

A method for estimating downlink channel quality, comprising:

obtaining a downlink channel quality indicator or an interference indicator;
feeding back the downlink channel quality indicator or the interference indicator to a network equipment, so that the network equipment estimates a weak interference noise matrix of a user equipment (UE) according to the downlink channel quality indicator or the interference indicator, wherein the downlink channel quality indicator or the interference indicator is fed back by the UE, obtaining a time-frequency channel matrix of a serving cell and a time-frequency strong interference matrix of a strong interfering cell, and obtaining a time-frequency interference noise matrix of the UE according to the estimated weak interference noise matrix and the time-frequency strong interference matrix;
and estimating downlink channel quality according to the time-frequency channel matrix and the time-frequency interference noise matrix.

A network equipment, comprising:

an indicator receiving unit, configured to receive a downlink channel quality indicator or an interference indicator, wherein the downlink channel quality indicator or the interference indicator is fed back by a user equipment (UE);
a weak interference noise estimating unit, configured to estimate a weak interference noise matrix of the UE according to the downlink channel quality indicator or the interference indicator, wherein the downlink channel quality indicator or the interference indicator is fed back by the UE;
a time-frequency matrix obtaining unit, configured to:
obtain a time-frequency channel matrix of a serving cell and a time-frequency strong interference matrix of a strong interfering cell, and obtain a time-frequency interference noise matrix of the UE according to the estimated weak interference noise matrix and the time-frequency strong interference matrix;
and
a channel quality estimating unit, configured to estimate downlink channel quality according to the time-frequency channel matrix and the time-frequency interference noise matrix.

3 more elements

Dependencies are inferred from the claim text.

Method and apparatus for estimating downlink channel quality

Life of this patent

Method and apparatus for estimating downlink channel quality

Life of this patent

Abstract

Claims16