US 9,871,619 B2 · Method and arrangement in a wireless communication system

Abstract

In one aspect of the teachings herein, a probability distribution is determined for the prediction errors determined from the differences between predicted and measured values of a quality parameter for a radio link between first and second radio nodes in a wireless communication system. In turn, the probability distribution is used to identify a prediction error value on which a link adaptation margin estimate is based, and the link adaptation margin estimate is provided for use in performing link adaptation, e.g., for use as a “back off” value for the predicted values of radio link quality which are used to make link adaptation decisions.

Claims20

Dependent claims

A method of supporting link adaptation with respect to a radio link between a first radio node and a second radio node in a wireless communication system, said method comprising:

predicting values of a quality parameter for the radio link with respect to measurement times at which measured values of the quality parameter are obtained for the radio link;
determining prediction errors between the predicted values of the quality parameter and the corresponding measured values of the quality parameter;
determining a probability distribution of the prediction errors;
identifying a prediction error value in the probability distribution that corresponds with a distribution percentile defined by a predetermined quality target;
determining a link adaptation margin estimate according to the identified prediction error value;
and
providing the link adaptation margin estimate for use in performing link adaptation with respect to the radio link.

4 more elements

An arrangement in a network entity for supporting link adaptation with respect to a radio link between a first radio node and a second radio node in a wireless communication system, said arrangement comprising a processing circuit configured to:

predict values of a quality parameter for the radio link with respect to measurement times at which measured values of the quality parameter are obtained for the radio link;
determine prediction errors between the predicted values of the quality parameter and the corresponding measured values of the quality parameter;
determine a probability distribution of the prediction errors;
identify a prediction error value in the probability distribution that corresponds with a distribution percentile defined by a predetermined quality target;
determine a link adaptation margin estimate according to the identified prediction error value;
and
provide the link adaptation margin estimate for use in performing link adaptation with respect to the radio link.

4 more elements

Dependencies are inferred from the claim text.

Method and arrangement in a wireless communication system

Life of this patent

Method and arrangement in a wireless communication system

Life of this patent

Abstract

Claims20