Telefonaktiebolaget Lm Ericsson (Publ)

St-Ericsson Sa

Tobias Junno

Torgny Palenius

Ali Nader

Lennart Andersson

Jagadeesh Arunachalam

Ali G Nader

An arrangement () for a user equipment, UE, is disclosed. The arrangement () comprises an acquiring unit () configured to acquire neighboring cell information relating to a plurality of neighboring cells. An assignment unit () is provided to assign a priority indicator to each neighboring cell based on the neighboring cell information. Also, a measurement unit () is provided to perform measurements on the basis of the assigned priority indicators. The arrangement () is arranged such that measurements can be performed more frequently for a neighboring cell having a first priority indicator compared with another neighboring cell having a second priority indicator, which second priority indicator is comparatively lower than the first priority indicator. The disclosure also presents corresponding methods, computer program products and devices.

Neighboring cell measurements

Time-to-trigger (TtT) time periods are usually fixed. A better TtT parameter is adapted based on the signal quality that a receiver perceives from its surrounding area. For example, the lower the value of a first signal quality at the same time that the value of a second signal quality is greater than a trigger threshold, the shorter the TtT parameter becomes.

Time-to-trigger handling methods and apparatus

Power control methods and apparatus taught herein advantageously provide quick convergence to the signal quality target needed to achieve a given data error rate target, when changes in transport format use by a given transport channel require such convergence. Specifically, the methods and apparatus maintain a 'baseline' signal quality target that stays current with changing signal propagation conditions because it is common to all transport formats used by the transport channel. The methods and apparatus then bias this baseline signal quality target with a target offset particularized for the transport format in use. This offset may be selected from memory or dynamically calculated, and, regardless, can often be applied after a single transmission time interval.

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Lund, Sweden

Tobias Junno