Telefonaktiebolaget Lm Ericsson (publ)

Rolf Stadler

Andreas Johnsson

Christofer Flinta

Farnaz Moradi

Jawwad Ahmed

Javier Baliosian

Rafael Pasquini

Tim Josefsson

A method for predicting a location of a fault in a system is described. The method includes obtaining a faulty unit pertaining to a Supervised Self-Organizing Map (SSOM), wherein the faulty unit has been derived from a sample of machine-level metrics for the system and the SSOM has been trained with a first layer of machine-level metrics and a second layer of service-level metrics. The method further includes expanding a circle originating at the faulty unit until a number of normal units of the SSOM falls within the circle, computing, for each machine-level metric, a score based on differences between the faulty and normal units, wherein a set of scores comprises the respective score for each machine-level metric, and selecting a sub-set of the set, wherein the sub-set comprises the greatest scores of the set, whereby the fault is predicted as located according to metrics represented by the sub-set.

Method and system for fault localization in a cloud environment

A method of discovering overlapping cells in a telecommunications network comprising a plurality of base stations, wherein steps carried out by an individual base station comprise determining sets of terminals in ranges of its associated cells and sending a message with information about said sets of terminals to other base stations. The method also includes receiving messages from said other base stations with information about sets of terminals in ranges of their associated cells. The individual base station calculates intersection of its own set of terminals with those received from said other base stations and classifies cells as overlapping if the corresponding intersection is equal or above a predefined level.

Method of discovering overlapping cells

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Stockholm, Sweden

Rolf Stadler