Description of QoE metrics [Документация VAS Experts]
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    en:dpi:qoe:paramdescript [2024/11/05 08:37] – [DNS Flow] elena.krasnobryzhen:dpi:qoe:paramdescript [2024/11/05 08:40] (current) – [GTP Flow] elena.krasnobryzh
    Line 71: Line 71:
     | MPLS labels            | Labels for routing packets in MPLS networks                                                                          | | MPLS labels            | Labels for routing packets in MPLS networks                                                                          |
      
    -=====GTP флоу=====+=====GTP Flow===== 
     +GTP (GPRS Tunneling Protocol) is a group of IP-based connection protocols used in GSM, UMTS, and LTE networks.   
     +The GTP protocol is used by mobile operators as a tunnel for data transmission. It consists of two layers:   
     +  * **GTP-C** (Control Plane) — service information, such as connection fields.   
     +  * **GTP-U** (User Plane) — user data, such as voice information.   
     +DPI decodes **GTP-C**, and this information is sent to **IPFIX** in the “GTP flow” and “Raw GTP flow” reports in the GUI. 
     + 
     +GTP logs are used for the following tasks:   
     +  * **Base station load analysis**: distribution of subscribers across base stations and traffic monitoring, which is useful for LBS (Location-Based Services).   
     +  * **Anomaly monitoring**: tracking changes in the load on base stations to identify deviations from the norm.   
     +  * **Subscriber tracking** on the map and movement analysis: visualization on the map is possible, as well as route analysis and current location.   
     +Some operators also use GTP logs to link IP and IMSI (subscriber identifier) to consolidate user information from various information systems (DPI, billing, etc.).   
     + 
     +The report is based on versions **GTP-C V1** and **GTP-C V2**.   
     +Access to GTP Log is available only to users with a QoE Standard license. [[en:dpi:licensing#qoe_licensing|More details]] 
     ^ Metric                          ^ Description and possible values                                                                                                                                                                                                                       ^ ^ Metric                          ^ Description and possible values                                                                                                                                                                                                                       ^
     | Date                            | Date and time of subscriber registration at the tower. In the aggregated log, this time depends on the aggregation time                                                                                                                               | | Date                            | Date and time of subscriber registration at the tower. In the aggregated log, this time depends on the aggregation time                                                                                                                               |