Abstract: Various communication systems may benefit from methods, apparatuses, and systems for data collection. For example, wireless communication systems of the third generation partnership project (3GPP) may benefit from data collection in network management layer coverage and capacity optimization. For example, a method may include sending performance measurement job activation indicating that minimization of drive test data is to be collected (in an alternative, the job can be configured to indicate that non-MDT data is to be collected). The method may also include receiving performance measurements in response to the job activation.

Abstract: Methods, apparatus and computer program products are disclosed for enhancing mobility robustness optimization in self optimizing networks. Neighbor relation information indicating relations between a handover source cell and candidate handover target cell(s), each including a first counter indicating events of an unsuccessful handover of a user equipment from the handover source cell to one candidate handover target cell, and a second counter indicating events of connection re-establishment attempt of the user equipment to the candidate handover target cell after an unsuccessful handover to another cell. A first candidate handover target cell to which handover of the user equipment was unsuccessful and a second candidate handover target cell to which the user equipment has re-established a connection, out of the candidate handover target cells, are determined.

Abstract: There are provided measures for evaluation of throughput of carrier aggregated user equipments. Such measures exemplarily include determining, per communication endpoint implementing carrier aggregation aggregating one primary connection and at least one secondary connection, a transmission volume with at least one activated secondary connection, determining, per communication endpoint implementing carrier aggregation aggregating one primary connection and at least one secondary connection, a time with transmission data in a transmission buffer and at least one activated secondary connection, and obtaining, per communication endpoint, a transmission throughput with at least one activated secondary connection, based on said transmission volume and said time.

Abstract: A method of energy saving is applied to a mobile communications network comprising at least two radio access technology systems (102; 104) having a plurality of base stations (108-118). The method comprises the steps of: assigning (136a; 136b) respective priorities to the radio access technology systems; and an energy saving server (136a; 136b) instructing, on the basis of the priorities, a selected radio access technology system to reduce the operational state cells in a group of cells. This reduction occurs if the selected radio access technology system and/or another radio access technology system is able to maintain service to served mobile terminals.

Abstract: A method (200) of activating or deactivating a trace session using an international mobile subscriber identifier in a long term evolution communication networks (100). The method includes receiving a trace session activation or deactivation request with an IMSI identifier by the eNodeB (104) to activate or deactivate a trace session for subscriber and forwarding the trace session activation or deactivation request and IMSI identifier to a wireless communication network entity (108). The trace session activation request including IMSI (204) and trace session activation request (304) can be forwarded over an S1 interface between network entities.

Abstract: A system and method for resolving conflicting physical cell identification in a wireless communication system includes a first step 200-204 of detecting a physical cell identification conflict. A next step 206 includes correcting a neighbour relation table in response to the conflict. A next step 208 includes receiving an ambiguous physical cell identification. A next step 210 includes resolving the ambiguous physical cell identification.

Abstract: A system and method for decrypting a Non-Access Stratum (NAS) message traced in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) includes a first step (700) of providing security information for a trace record for the NAS message, and a next step (702) includes decrypting the NAS message using the security information.

Abstract: A method (200) of activating or deactivating a trace session using an international mobile subscriber identifier in a long term evolution communication networks (100). The method includes receiving a trace session activation or deactivation request with an IMSI identifier by the eNodeB (104) to activate or deactivate a trace session for subscriber and forwarding the trace session activation or deactivation request and IMSI identifier to a wireless communication network entity (108). The trace session activation request including IMSI (204) and trace session activation request (304) can be forwarded over an S1 interface between network entities.

Abstract: A method for scheduling collection of key performance indicators from elements in a communications network as provided improves network efficiency by reducing redundant KPI data transmission. The method includes defining a first key performance indicator request set by matching a first request for a key performance indicator with a second request for a key performance indicator (step 405). A maximum collection frequency for the first key performance indicator request set is then determined (step 410). Next, collection of key performance indicators defined in the first key performance indicator request set is scheduled at a rate equal to or greater than the maximum collection frequency (step 415).