Telefonaktiebolaget Lm Ericsson (publ)

Huawei Technologies Co., Limited

Martin Alm

Erik A Eriksson

Fredrik Athley

Arne Simonsson

Magnus Lundevall

Johnny Ahl

Björn Sihlbom

Mattias Gustafsson

Magnus L Berg

Mats Högberg

Anders Gustavsson

Mats Andersson

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.

Method and arrangement in a wireless communication system

Method and arrangement in a network entity for supporting link adaptation in a wireless communication system. The method comprises obtainingone or more predicted parameters related to the quality of a radio link. The method further comprises measuringone or more actual parameters, corresponding to the one or more predicted parameters. The method further comprises derivingone or more error distributions based on the difference between the predicted and actual one or more parameters, from which error distributions a link adaptation margin estimate is derived, based on a predetermined radio link quality target. The link adaptation margin estimate is then used for supporting link adaptation for the radio link.

A method and a system is disclosed for improving transmission of timing advance messages to a mobile station, in a network employing adaptive antenna systems. In a typical embodiment each TA-message is dedicated to one mobile and sent in the adaptive antenna beam that covers the area where the desired mobile is located.

TA update in adaptive antenna systems

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Mölnlycke, Sweden

Martin Alm