Analyzing quality of experience (QoE) and quality of service (QoS) is like shooting at a moving target: in constant flux and affected by a myriad of variables – both known and unknown.

Undeniable key factors affecting end-user experience, however, include the network (e.g. the capacity), the location (i.e. the placement of the device, e.g. indoors or outdoors, stationary or moving, in urban or rural areas), and the end-user device itself (e.g. supported technologies). And just like the weather – another variable, by the way – those conditions change over time.

When it comes to designing solutions for Mobile Network Testing and QoE/QoS benchmarking, these factors along with a chain of other variables must be taken into account. The end-user experience does not depend on the network alone.

System design challenges

To provide the most reliable KPI results and instill trust and confidence, the design of the equipment mobile operators and service providers utilize to analyze the real end-user perception must address all variables. Continuously introduced applications increase the demand for high network and device performance, calling for more elaborate antenna and device designs. Consequently, a new generation of system design is required.

Traditionally, for example, drive-test benchmarking solutions hosted modified devices under test inside the vehicle and the external antennas of these or scanners on the roof. Today, however, for the same type of large-scale measuring campaigns, there is a trend towards the use of unmodified smartphones. What does that mean, and how does it affect system design?

Rohde & Schwarz mobile network testing analyzes and prioritizes the practical impact of all variables. These are strongly and meticulously taken into account when designing solutions. In this blog series discussing the importance of design on quality and efficiency, we will take a closer look at a selection of key design topics and their effects, including:

  1. Devices
  2. Temperature
  3. Effect of vehicles
  4. Phone placement and orientation
  5. Attenuation

Read about the variable “devices” in our hardware expert Andreas Richard’s post How phone design affects system design.