Drive Testing: 16. Explain how Qualcomm's "Field Test Mode" can be utilized for drive testing and benchmarking in 5G networks.
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Introduction to Qualcomm's Field Test Mode:
Qualcomm's Field Test Mode is a diagnostic tool integrated into Qualcomm chipset-based devices. It allows for the collection of detailed information about the device's connection to the cellular network.
Accessing Field Test Mode:
Field Test Mode is typically accessed through a specific set of dialer codes or through the device's settings menu, depending on the device and the Qualcomm chipset it uses.
Parameter Measurements in 5G Networks:
Field Test Mode provides access to a variety of parameters that are crucial for evaluating the performance of a 5G network. These parameters include signal strength, signal quality, signal-to-noise ratio, and other key metrics.
Signal Strength Measurements:
Signal strength is a critical parameter in drive testing. Field Test Mode allows users to monitor the received signal strength indicator (RSSI) and reference signal received power (RSRP) for both the serving cell and neighboring cells in a 5G network.
Signal Quality Measurements:
Field Test Mode provides information on signal quality through metrics such as reference signal quality (RSRQ) and modulation and coding scheme (MCS). These metrics help assess the reliability and quality of the communication link.
Beamforming and MIMO:
In 5G, beamforming and multiple-input multiple-output (MIMO) are crucial technologies. Field Test Mode provides information about beamforming performance, including beam index and beamformed reference signal received power (BRSRP). This is important for evaluating the effectiveness of beamforming in various locations during a drive test.
Handover Performance:
Field Test Mode allows monitoring of handover events between different cells. This includes evaluating the handover success rate, latency, and the overall effectiveness of the network's mobility management.
Data Throughput Measurements:
Drive testing in 5G involves assessing data throughput in different locations. Field Test Mode provides information on throughput, packet loss, and latency, helping to identify areas with potential network congestion or performance issues.
Network Slicing and QoS:
With 5G, network slicing and quality of service (QoS) become critical. Field Test Mode enables the measurement of parameters related to network slicing performance and QoS metrics, ensuring that different services receive the required level of performance.
Logging and Analysis:
Field Test Mode often allows users to log the collected data for later analysis. This data can be used to generate reports, identify areas for network optimization, and benchmark the performance of different network configurations.
