This paper describes techniques that relate to estimating latency in buffered systems and, more particularly, for evaluating wireless bandwidth capabilities in automobile head units (e.g., infotainment systems) that are configured to process and display data wirelessly received from mobile computing devices (e.g., smartphones, smartwatches). For example, an automobile head unit may wirelessly receive display data at a given resolution level from a mobile computing device, and may display the received data at a display device of the head unit. The techniques disclosed herein provide a method to test or determine if a particular automobile head unit has sufficient wireless bandwidth capabilities to support receiving and displaying data at one or more resolution levels. The techniques utilize information associated with required bandwidth and available bandwidth to simulate the buffering behavior of a particular setup under evaluation, and may generate various data points in the form of estimated latencies. The techniques then generate a histogram of these latencies, from which one or more thresholds can then be established to determine whether a particular automobile head unit demonstrates sufficient performance while processing received display data.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.