Telefonaktiebolaget Lm Ericsson (Publ)

Nokia Solutions and Networks Oy

Philipp Frank

Chin Lam Eng

Mitchell Ho

Chee Wai Ng

Raul Martin Cuerdo

John McFarland Harris

Rahul Jain

Mikko Tapani Suni

Mika Maurits Aalto

Maunu Elias Holma

Yu Jia

Javier Rasines

Jaime Rodriguez Membrive

Luis Angel Maestro

Bhavika Reddy Jalli

Michal Horemuz

Roland Antonius Woelker

Serene Banerjee

Cesar Marco Rubio

Jared Keown

Kin Soon Douglas Ho

Lichao Gui

Shweta Ramesh

Cuerdo Raul Martin

Luis Angel Maestro Ruiz De Temino

A method includes extracting, from first log data relating to operations of wireless devices and/or nodes in the communication network, textual elements and numerical elements; transforming the textual elements to a first vector space to determine respective textual element vectors; transforming the numerical elements to a second vector space to determine respective numerical element vectors; embedding and clustering the textual element vectors and the numerical element vectors to determine clusters of embedded vectors, wherein the embedding includes, for a plurality of wireless device sessions, embedding at least one textual element vector and at least one numerical element vector into a single embedded vector representing the particular wireless device session; and training a classifier model to determine a network status from second log data, wherein the classifier model is trained using the plurality of clusters of embedded vectors.

Classifier model for determining a network status of a communication network from log data

The invention refers to a method performed by a performance recommender for a wireless network, obtaining () for a plurality of cells input data, the input data comprising actual cell configuration parameter values; applying () a machine-learning model to the input data to generate, for at least a portion of the cells, one or more recommendations for changes to the cell configuration parameter values to improve uplink, UL, performance in the respective cells; and based on identifying conflicts between recommendations for different cells, partitioning () the plurality of cells into a plurality of interaction areas of neighboring cells; resolving () conflicts in recommendations for respective cells within each of the interaction areas and across different interaction areas; and for at least a portion of the cells, determining () preferred values for the cell configuration parameters to improve UL performance in the respective cells; the invention further relates to a corresponding performance recommender and a corresponding computer program.

Improving uplink performance avoiding parameter conflicts in a wireless network

A computer-implemented method for analyzing issues in a cellular network is provided. The cellular network includes a plurality of cells, including source cells and neighbor cells. The method includes building a network graph representing features of the cells. The method includes identifying, using the network graph, sub-graphs for each source cell indicating a network issue. The method includes, for each network issue of the source cell for each sub-graph, ranking each feature. The method includes, for each source cell, training, using a feature set identified, a first machine learning (ML) model. The method includes training a second ML model, using patterns identified by each cluster, to classify an unidentified pattern of one or more neighbor cells contribution to the source cell network issue and identify root cause information for the issue.

Automated root cause analysis of network issues in a cellular network using machine learning

A method is provided for identifying operating conditions of a system. Input data relating to operation of the system is applied to a multi-class model for classification, where the multi-class model is configured for classifying the data into one of a plurality of predefined classes, and each class corresponds to a respective operating condition of the system. A confidence level of the classification by the multi-class model is determined. If the confidence level is below a threshold confidence level, the input data is applied to a plurality of binary models, where each binary model is configured for determining whether the data is or is not in a respective one of the predefined classes. If the plurality of binary models determine that the data is not in any of the respective predefined classes, the data can be taken into consideration when updating the multi-class model.

Life cycle management

The invention refers to method, performed by a network optimization function associated with a wireless network (), of forecasting performance issues associated with cells () in the wireless network, the method comprising: for each of a plurality of cells in the wireless network, obtaining () first time-series data representing a plurality of key performance indicators, KPIs, at a first plurality of past time points; applying () a multi-layer forecasting model to the first time-series data to determine second time-series data representing the plurality of KPIs for each of the plurality of cells at a second plurality of future time points; and based on the second time-series data, determining () respective probabilities of occurrence for a respective plurality of different performance issues, associated with the plurality of cells, during one or more future time periods that include the second plurality of future time points; the method further refers to a corresponding network optimization function, a network optimization node and corresponding software.

Method for cell issue forecasting

A methodis disclosed for generating and training a model to detect interference conditions at a cell in a wireless cellular network and to classify the impact of detected interference conditions on performance of the wireless cellular network in the cell. The method comprises, for each of a plurality of cells in the wireless cellular network (), obtaining data representing received signal power at a base station serving the cell over a period of time () and obtaining data representing a plurality of performance metrics for the cell over the time period (). The method further comprises obtaining classifications of the received signal power data into one of a plurality of cell interference conditions () and the performance metric data into one of a plurality of cell impact classes (). The method further comprises applying a Multi-Task Learning Machine Learning algorithm to a training data set comprising the classified received signal power and performance metric data to generate a model for classifying received signal power data into one of the plurality of cell interference conditions and for classifying performance metric data into one of the plurality of cell impact classes ().

Detecting interference in a wireless network

The present invention refers to a method and apparatus and computer program for detecting communities in a radio access network with a plurality of vertices (C, BBU), wherein the method comprises calculating (S) relationship strengths () for network connections between the vertices (C, BBU) by executing a connection strength calculation process by analyzing performance factors, decisive for network performance including cell coverage overlap, signal strength, and inter-cell interference. The method further creates (S) a network graph with nodes, representing the vertices (C,BBU) in the network and edges, representing the network connections based on the calculated relationship strengths () and applies (S) an extended iterative disjoint community detection algorithm for clustering nodes into communities, wherein in each iteration imposed one or more constraints for clustering cooperating nodes into the same community are analyzed (S).

Detecting community in radio access networks with a plurality of vertices

A method comprises selecting, for at least a part of a set of data to be transmitted to a user equipment in cell, a bit rate, said bit rate being selected in dependence on radio conditions associated with said user equipment in said cell.

Method and apparatus for optimization of video transmissions

Link speed fluctuation reduction can be useful in a variety of communication systems. Such smoothing may have various benefits and may be achieved in various ways. For example, a policy and charging rules function can be leveraged to avoid repeated transfers of a same section of over-the-top video. A method can include detecting, for a link, a link traffic condition above a predetermined threshold. The method can also include estimating link speed to obtain an initial link speed value. When the detected link traffic condition is above a predetermined threshold, the method can further include limiting fluctuation of the link speed to within a threshold amount of the initial link speed value. The method can additionally include periodically re-estimating the recently achieved link speed as an updated link speed value and limiting the fluctuation based on the updated link speed value.

Link speed fluctuation reduction

Growing community of inventors

Madrid, Spain

Philipp Frank