Mobile Network Measurement Tool

Sigma-LA is a Windows based drive test solution that captures, monitors and saves RF log data from multiple UEs, Scan Receivers and GPS devices. Data from upto 4 UEs, 2 scan receivers data and one GPS devices can be captured simultaneously. Sigma-LA can also playback saved data after the data collection session has ended. It is an essential tool for optimizing and troubleshooting mobile networks.


Monitoring & Optimization

Sigma-LA is a very effective tool to verify radio network quality through drive tests. It helps in competitive measurement among the networks. It supports data collection for LTE/WCDMA/GSM/GPRS networks. It has out-of-the-box support for hundreds of KPIs like including throughput parameters, packet error rate etc. It supports data collection with built in KPIs for Layer 1, Layer 2 and Layer 3 of the networks.

Intuitive Displays

Sigma-LA has been designed with drive test operator at site in mind with intuitive screens and displays. Various views for quick analysis like Protocol Message View, L1 data on graphs, live maps etc. all in sync with each other have been built in which helps in making a better judgment of network status. L3 messages can also be decoded in real time and can be displayed with decoded tree structure. The displays are highly customizable so that users can adjust them as per their requirements. Live data display makes analysis on the go much easier.


Sigma-LA supports playback of log files collected through it in the field. With intuitive features like displaying Call Events on the Cell Search Charts it makes analysis a very easy task. One can synchronize the L3 Decode view with the Map Display and align them side by side, so as to easily understand the detailed status of network problems. Analysis like Handovers and Radio Link Failures etc. are presented live on the views.


Why Sigma-LA?

Sigma-LA is a robust drive test solution with immense capabilities. It not only captures network log data, but also can replay and recreate the whole scenario. It has a large number of built in KPIs which are continuously being developed and enhanced. It supports advanced features like VoLTE, Carrier Aggregation and Massive MIMO analysis etc. With an aggressive development cycle, feature improvements and support for emerging technologies are added rapidly.

Various thoughtful features in Sigma-LA make it a very intuitive tool for data collection and analysis. Rich views with charts/tables/maps etc. make data visualization very simple. Features to align and arrange multiple views in multiple ways for user make things highly customizable and allow the tool to adjust for everyone’s own style. Data synchronization between views and display of various analysis, live L3 decoding and synchronization with other KPIs make it very easy to understand and make decisions.


  • Communicates automatically with the attached UEs to collect Layer 1, 2 & 3 data from the chipset directly.
  • Displays collected data from Layer 1 to Layer 3 in real-time on various screens.
  • Live data displayed on maps.
  • Realtime L3 decoding.
  • Full packet decode in real-time.
  • Saves the logged data to disk for further analysis.
  • Imports and replays saved log data.


  • Makes field test work effective by automatically controlling a series of processes.
  • Controls various devices simultaneously like UEs, Scanners and GPS devices.
  • Designed with operator at site in mind with intuitive screens and displays.
  • Synchronized displays help make better judgment of network status.
  • Features like “User Event Marker” help mark special points of interest to help further analysis.
  • Cell Search view shows base-station information read from CSV, it can automatically select the appropriate SC in case of multiple SCs.
  • Export option to multiple formats including CSV and pairs natively with Sigma-PA post-Processing tool.
  • Works on Windows XP,Windows 7,Windows 10.


  • Supports multiple UEs, Scanners and GPS devices.
  • Up to 4 UEs, 2 scan-receivers and 1 GPS can be connected simultaneously.
  • Call control for voice call and data.
  • Layer 3 protocol decoding for RRC, NAS and SIB Messages.
  • Displays measurement data and call events on map in real time.
  • Replay function with search and speed control.
  • Various views for quick analysis like protocol message view, L1 data on graphs, map etc. all in sync with each other.
  • Export feature to export collected data to CSV and other standard formats.