DRIVE TEST 2G (GSM) TEMS

Monitor, analyze, and troubleshoot cellular networks with TEMS (Telecom Equipment and Monitoring System) to gain insights into network performance. Explore coverage, quality of service, status bars, and workspace views.

Use the overview tab to get a high level view of the drive test, presenting KPIs like network coverage, signal strength, data output, and quality of service.

Explore the data tab of telecom equipment and monitoring system, displaying packet switching information from a data card or modem used in drive test. Analyze data performance with charts.

Explore map tab, a graphical module that displays the location of cellular measurements and events from drive tests, with GIS-enabled interaction for analyzing coverage, signal strength, and quality of service.

Explore real-time scanner data in the scanner tab of the Times Telecom Equipment and Monitoring System to visualize signal strength, frequency, and available cells for diagnosing coverage gaps and interference.

Explore the ctrl and config tab to manage telecom equipment and monitoring system settings, including data collection, logging, analysis, scaling settings, measurement intervals, alarm thresholds, and integration with other systems.

Access GSM tables in the workspace to support 2G drive test analysis, delivering detailed insights into key radio parameters and radio behaviors for compressive evaluation and assessment.

Navigate GSM modules in the presentation, selecting options such as cell information, radio parameters, call statistics, and system information to analyze 2G GSM TEMS data.

Connect all equipment from the left corner, or disconnect all at once with the main button, then select Ms1, Ms2, or GPS and connect or disconnect with the middle control.

Restore the upper bars by checking the view or layout menu to see if the measurements bars were hidden, then use restore or reset layout to bring them back.

Identify the network to which mobiles are connected and their status, then lock a device to gsm-only mode from the interface.

Configure a gsm device interface to lock a phone to a single arfcn, ensuring it remains on that frequency during tests to minimize interference.

Import and configure a cell file in TEMS by mapping columns for cell id, latitude, longitude, and frequency in the general configuration.

Customize TEMS investigations with themes and color coding for maps, measurement windows, and event indicators. Set color thresholds—green for strong, red for weak—to visualize 2G/3G/4G/5G coverage and performance.

Describe the current GSM channel, its unique identifier combining MCC, MNC, Luk and Solid components, GPS support, relevant band, R-fcn channels, and A5 ciphering options.

Monitor frame error rate and drop frames, bit error rate, and speech quality index updated every 0.5 seconds to assess radio parameter performance, including carrier-to-interference ratio and miss power.

Analyze neighbor cells and potential handover candidates using radio frequency channel numbers and broadcast control channels, apply C1/C2 reselection criteria within hierarchical cell structures and RCS levels.

Identify available frequencies and measure signal strength across a scanned frequency range to detect interference, coverage gaps, and active carriers in GSM networks.

Understand how low gsm signal strength degrades voice and data quality, caused by distance, obstructions, and suboptimal antenna setups, with remedies like optimized transmit power and antenna tilt.

Identify overshooting causes from high antenna placement and low tilt, and adjust transmit power, tilt, and antenna patterns to limit coverage, optimize handovers, and reduce interference with neighboring cells.

Identify and mitigate gsm network interference with tems by drive tests and frequency scans, detecting co-channel, adjacent-channel, and external interference, then adjust frequency plans, power, and antenna tilts.

Explore call dragging in GSM, where a mobile stays on a suboptimal serving cell despite better signals, delaying handover to a nearer cell and risking drops.

Explore how hysteresis prevents ping pong handover between two cells as the mobile station moves in zigzag paths with similar signal levels, and adjust margins and offset to reduce events.

Identify no dominant server situations when several cells provide similar signal strength, causing rapid handovers; optimize antenna tilt, transmit power, and neighbor lists to stabilize a dominant cell.

Identify and minimize unnecessary handovers caused by incorrect margins to protect network performance; frequent handovers raise quality issues and costs, while overshooting tasks drive illogical handovers.

Identify missing neighbor relations when the best adjacent cell is not in the neighbor list, causing handovers to the currently reported best, which may be suboptimal.

Identify common 2g gsm tems handover problems, including failures despite strong neighbor signals due to duplicate or missing neighbor messages, NCC issues, and BSE mapping of neighbor signals to CGI.