The DRT 4311B hardware is a collection and measurement tool providing users the ability to gather and assess coverage, capacity and quality of area cellular service. It is the carrier’s goal to provide customers with strong signal strengths and fast up/down data loads via cell-phones, tablets, laptops, etc. In order to do this they must constantly monitor their network’s signal output and antenna systems.
Concurrent operation for parallel 2G, 3G, and 4G scanning enables ample data density for drive test applications. This concurrency can be maintained over inter-band and inter-RAT test scenarios. The system provides up to 120 MHz of instantaneous bandwidth per unit and the ability to synchronize multiple units together.
Propagation Model Tuning
A scanner is often used for RF propagation model tuning to identify the optimal locations of future cell sites. During a drive test, the scanner must perform RSSI measurements fast enough to create an accurate propagation model of the environment. After these cell sites are deployed, the scanner is used again to tune the propagation models as the environment changes. The RSSI feature of DRT’s Power Spectrum Tools (PST) currently supports RSSI bandwidths of 20 kHz and 100 kHz and meets the Lee Criteria. DRT’s PST 's model tuning provides predictive coverage.