The present document is part of a TS-family covering the 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Telecommunication management, as identified below:
"Quality of Experience (QoE) measurement collection; Concepts, use cases and requirements";
"Quality of Experience (QoE) measurement collection; Control and configuration";
"Quality of Experience (QoE) measurement collection; Information definition and transport";
One main motivation of mobile network evolution is to improve the user experience why the evaluation of the user experience at the UE side is vital to network operators, especially when the operators provide some real-time services which require for example high date rate and low latency like streaming services (typically video services) , where even intermittent quality degradation is very annoying. Many of these streaming services are a significant part of the commercial traffic growth rate, therefore the focus is on the end users' experience .
Quality of Experience (QoE) information collection provides detailed information at call level on a number of UEs.
The capability to log information within a UE, and in particular the QoE of an end user service, initiated by an operator, provides the operator with QoE information. The collected information (specified in TS 26.247
) cannot be deduced from performance measurements in the mobile network.
The QoE information is information collected by the end user application in the UE.
The collected QoE information is collected by the management system for analysis and/or KPI calculations.
The present document addresses concepts, business level use cases and requirements for the function Quality of Experience (QoE) measurement collection in UMTS and LTE. The measurements that are collected are DASH 
and MTSI 
The function includes collecting QoE information from UEs frequenting a specified area .
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
For a specific reference, subsequent revisions do not apply.
For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
: "Vocabulary for 3GPP Specifications".
: " Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)".
: "IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction".
: "Quality of Experience (QoE) measurement collection Integration Reference Point (IRP); Requirements".
A network request session is a session in the mobile network when the network checks for UEs that have the capability to provide requested information.
An UE request session is a session in the network when the network has found an UE that has the capability to provide the requested information and the request is forwarded to the UE.
A recording session is a session in the UE when it initiates recording of the requested end user service/end user service type and record the requested information.
The collection of QoE information for a specified end user service/end user service type either from UEs in a specified area . The collected information is transported to a collection centre, where it can be analysed and/or KPIs can be calculated.
A collection can be requested by an operator technician via the management system to the traffic network. As the network do not have any knowledge which UEs have the capability to record the requested data, therefore the UEs will report whether they have this capability or not when a session set up. UEs that has this capability that match the request from the management system will be requested to start recording the requested information when the request constraints are met. The UE will make the recorded data available for management system.