Abstract: The present disclosure generally relates to ultra-wide band (UWB) positioning. In this context, a mobile tag for a UWB positioning system comprising mobile tags, stationary anchors and a central positioning entity is presented. The mobile tag is a first mobile tag configured to acquire positioning information that depends on a relative position between the first mobile tag and a second mobile tag. The first mobile tag is further configured to transmit the acquired positioning information to another device of the UWB system, such as a stationary anchor or a third mobile tag.

Abstract: We generally describe a collision prevention system (100) comprising: a localization system (402) for determining positions of an autonomous vehicle (104) and a human (106); and a collision determination unit (404) coupled to or in communication with the localization system (402), wherein the collision determination unit (404) is configured to determine, based on the determined positions of the autonomous vehicle (104) and the human (106), whether a predefined condition for an anticipated collision of the autonomous vehicle (104) with the human (106) is met; wherein the collision prevention system (100) is configured to: lock the autonomous vehicle (104) if the predefined condition is met; alert the human (106) for whom the predefined condition for colliding with the autonomous vehicle (104) is met; and allow unlocking of the autonomous vehicle (104) to be performed or initialized by the alerted human (106) only.

Abstract: There is provided a selecting of a radio access for a mobile terminal, comprising the steps of obtaining coverage information from a coverage information database for two or more nodes of the mobile communication network, obtaining configuration and/or state information from an inventory database for two or more nodes of the mobile communication network, and generating correlation information for two or more nodes correlating the coverage information obtained from the coverage database and the configuration and/or state information of nodes obtained from the inventory database.

Abstract: There is provided a selecting of a radio access for a mobile terminal, comprising the steps of obtaining coverage information from a coverage information database for two or more nodes of the mobile communication network, obtaining configuration and/or state information from an inventory database for two or more nodes of the mobile communication network, and generating correlation information for two or more nodes correlating the coverage information obtained from the coverage database and the configuration and/or state information of nodes obtained from the inventory database.

Abstract: A technique for reporting and processing alarm conditions in a communication network is disclosed. In one variant, a network element is presented that comprises a memory and at least one processor coupled to the memory, wherein the memory stores program code that configures the at least one processor to detect, as a first event, at least one alarm condition and to start, in response to detecting the first event, an alarm clearance timer. The program code further configures the at least one processor to detect, as a second event, at least one of expiry of the alarm clearance timer and clearance of the at least one alarm condition and to determine, after detecting the second event, a first performance indicator value of a performance indicator for a first period of time between the first event and the second event.

Abstract: A method for performing handover decisions for established radio connections in a mobile network is provided where the method comprise: requesting (6:10) a drop prediction report from a communication device, indicating whether or not an established radio connection is predicted to drop; receiving (6:20) a requested drop prediction report associated with the radio connection; determining (6:40), based on the content of the report, whether a first condition has been fulfilled; configuring a first threshold value specifying when a measurement report is to be provided from the communication device using the radio connection for which the drop prediction report has been received, in case the first condition has been fulfilled, and transmitting (6:60) the configured threshold value or an indication of the configured threshold value to the communication device.

Abstract: A method for performing handover decisions for established radio connections in a mobile network is provided where the method comprise: requesting (6:10) a drop prediction report from a communication device, indicating whether or not an established radio connection is predicted to drop; receiving (6:20) a requested drop prediction report associated with the radio connection; determining (6:40), based on the content of the report, whether a first condition has been fulfilled; configuring a first threshold value specifying when a measurement report is to be provided from the communication device using the radio connection for which the drop prediction report has been received, in case the first condition has been fulfilled, and transmitting (6:60) the configured threshold value or an indication of the configured threshold value to the communication device.

Abstract: A technique for counting distinct objects in a telecommunications network (500) including a plurality of nodes (502-506) is provided. Each of the nodes counts a subset of the distinct object. As to a method aspect of the technique, configuration parameters (700) are sent to the plurality of nodes (502-506). The configuration parameters specify a data structure for representing a number of the distinct objects. The data structure includes an array of integers for representing the number. Two or more data records according to the data structure are received from at least one of the nodes. Each of the data records represents the number of distinct objects counted by the corresponding one of the nodes. The received data records are merged in a merged data record ac cording to the data structure by comparing corresponding integers in the received data records. The merged data record represents the number of distinct objects underlying at least one of the two or more received data records.

Abstract: A technique of generating statistics for a performance metric of a mobile communications network is presented. The performance metric depends on at least a first parameter and a second parameter, wherein the first and second parameters each can be categorized in two or more non-overlapping sets of parameter values. Different combinations of first and second parameter value sets are defined. A method implementation of the technique comprises receiving performance metric values, first parameter values and second parameter values. A particular performance metric value is associated with the first and second parameter values prevailing when the particular performance metric value was acquired. The method further comprises identifying groups of performance metric values for which the associated first and second parameter values match the first and second parameter value sets of an individual combination, and generating the performance metric statistic from the identified groups of performance metric values.

Abstract: A technique for evaluating events in a telecommunication network based on an occurrence of a plurality of the events in the telecommunications network is disclosed. In a first method aspect, the method comprises the steps of selecting at least two parameters of the events; categorizing each of the parameters into a respective finite set of values; defining, for at least a part of conjunctions between the respective finite sets of values, a dedicated counter per conjunction; and altering, upon the occurrence of an individual event, the respective counter if the parameters of the occurred event match the respective conjunction between the finite sets of values.

Abstract: The present disclosure relates to a technique for configuring and collecting network performance measurements in a mobile communications network, the mobile communications network comprising at least one network node and at least one mobile terminal 208 connected to the at least one network node, implementing a Minimization of Drive Tests (MDT) trace measurement configuration and collection.

Abstract: A method and network management node for determining the managed nodes on a path from a given source node to a given destination node based on a statistical inference of traffic volume reports available from the nodes. Traffic counts from Performance Management (PM) counters are collected from all managed transport nodes including the source and destination nodes. Based on the observed pattern of traffic volume received from the PM counters, the most likely matching path from a given source to a given destination is selected. If the traffic counts are insufficient to establish a path with adequate certainty, the method may optionally generate additional traffic from the source node to the destination node to increase the reliability of the path determination.

Abstract: This disclosure describes a technique for evaluating a parameter adjustment in a mobile communications network using a multivariate performance model that models a dependency of a performance metric for the mobile communications network on at least two parameters. A parameter is selected to be adjusted for a first network entity, where at least one second network entity is potentially affected by the parameter adjustment for the first network entity. The multivariate performance model is used to determine a change of the performance metric for the first network entity resulting from the parameter adjustment, and a change of the performance metric for the at least one second network entity resulting from the parameter adjustment for the first network entity. Then, the parameter adjustment is evaluated based on the performance metric changes for the first and second network entities.

Abstract: A method and network management node for determining the managed nodes on a path from a given source node to a given destination node based on a statistical inference of traffic volume reports available from the nodes. Traffic counts from Performance Management (PM) counters are collected from all managed transport nodes including the source and destination nodes. Based on the observed pattern of traffic volume received from the PM counters, the most likely matching path from a given source to a given destination is selected. If the traffic counts are insufficient to establish a path with adequate certainty, the method may optionally generate additional traffic from the source node to the destination node to increase the reliability of the path determination.

Abstract: A technique of generating statistics for a performance metric of a mobile communications network is presented. The performance metric depends on at least a first parameter and a second parameter, wherein the first and second parameters each can be categorized in two or more non-overlapping sets of parameter values. Different combinations of first and second parameter value sets are defined. A method implementation of the technique comprises receiving performance metric values, first parameter values and second parameter values. A particular performance metric value is associated with the first and second parameter values prevailing when the particular performance metric value was acquired. The method further comprises identifying groups of performance metric values for which the associated first and second parameter values match the first and second parameter value sets of an individual combination, and generating the performance metric statistic from the identified groups of performance metric values.

Abstract: A technique for evaluating events in a telecommunication network based on an occurrence of a plurality of the events in the telecommunications network is disclosed. In a first method aspect, the method comprises the steps of selecting at least two parameters of the events; categorizing each of the parameters into a respective finite set of values; defining, for at least a part of conjunctions between the respective finite sets of values, a dedicated counter per conjunction; and altering, upon the occurrence of an individual event, the respective counter if the parameters of the occurred event match the respective conjunction between the finite sets of values.

Abstract: A method and apparatus enabling performance monitoring in packet-switched IP networks such as those configured according to an IP multimedia subsystem, IMS, architecture. Performance is monitored by reconstructing selected control signaling sequences. The control signaling sequences, which are typically executed according a signaling protocol such as the Session Initiation Protocol, SIP, are reconstructed by parsing the contents of monitoring request headers configured, modified, and attached to control messages according to the present invention. The header includes at least an IMS monitoring ID field (510) for identifying the signaling sequence to be reconstructed, a processing node ID field (520) for representing the entities processing the messages, and a requester ID field (530) for identifying a requesting entity. It may also specify a monitoring level (540) indicative of the monitoring tasks required. The monitoring may be requested by an IMS node, or by an entity outside the IMS.

Abstract: The present disclosure relates to a technique for configuring and collecting network performance measurements in a mobile communications network, the mobile communications network comprising at least one network node and at least one mobile terminal 208 connected to the at least one network node, implementing a Minimization of Drive Tests (MDT) trace measurement configuration and collection.

Abstract: A method of handling performance data comprising a set of events is described. An event record for each event is stored as a set of blocks, each block containing one or more attributes of the event. The storage space occupied by each event record in is then reduced in discrete steps, each step including a reduction process that reduces the size of one of the set of blocks. This enables the provision of intermediate records between events and counters so that new event records contain complete details of their event, older event records contain less information, and even older event records may contain only high-level (counter) information.

Abstract: Methods of processing record data are presented, together with a Central Management Node for processing record data, and Management Subsystem DataBases for providing a record data set and matching record data. Triggered by service related network fault event, a key table comprising at least one key type is determined, based on a focus target record and related to the network fault event is determined, which key table is used in the step matching the at least one key with record data sets in determined Management Subsystem DataBases. Matched results are merged, whereafter a service performance indicator may be determined, based on which a multi-layer water flow analysis of subsystem specific performance related indicators can be obtained. This analysis may be successfully used to reveal the location of the service related network fault.