Summary

Recommendation ITU-T Y.1545.2 specifies spatially resolved metrics for packet data-based services and a methodology for their computation, using the same conceptual framework as Recommendation ITU-T G.1034. The metrics cover the quality of service (QoS) and quality of experience (QoE) aspects of a wide range of applications used in motion, i.e., during travel. A taxonomy of application categories is provided, taking into account their absolute data rate (DR) requirements and, in particular, their sensitivity against temporary drops in available DRs, which are caused by motion through an environment that is characterized by spatial variation of network performance, i.e., available DR or latency. The methodology establishes ways to create a description of such spatial distributions of performance, termed route profiles and use route profiles to create predictions of QoS and QoE of application usage. It also establishes a new entity to describe local network performance that provides an abstraction and thereby a versatile way to express performance requirements.