Device-based system to estimate cellular wireless access network latency

Abstract

The described embodiments regard latency estimation by a wireless device for a cellular wireless access link. The wireless device determines maximum grant allocations (e.g., maximum transport block size values) for time slots based on channel conditions, monitors grant allocations to the wireless device, and classifies time slots having non-zero grant allocations based on a comparison of the grant allocations to the maximum possible grants to determine traffic bursts. The wireless device measures time periods of time slots with zero grant allocations within traffic bursts to estimate latency values for traffic bursts. The wireless device statistically processes the latency values to generate a composite (e.g., weighted moving average) latency value to compare with a threshold to determine whether to initiate latency mitigation actions.