QoSgesteuerte

QoSgesteuerte is a term used primarily in German-speaking networking literature to describe systems, networks, or services whose resource allocation and traffic handling decisions are guided by quality-of-service (QoS) policies. In practice, QoSgesteuerte environments seek to meet defined service levels by classifying traffic into priority classes and enforcing bandwidth, latency, jitter, and packet-loss targets.

Key mechanisms include policy-based management where a policy decision point selects QoS rules and a policy enforcement point applies them at routers, switches, or virtualized network functions. Techniques such as traffic shaping, policing, and scheduling (e.g., weighted fair queuing, priority queuing) implement the QoS policies. Signaling and differentiation methods like DiffServ and IntServ, as well as RSVP, are used to reserve or guarantee resources. In software-defined networks and cloud environments, QoS policies are often implemented by controllers and orchestrators; in mobile networks, QoS-driven approaches underpin network slicing and QoS flows in 5G.

Applications of QoSgesteuerte approaches include enterprise networks prioritizing VoIP and video, data centers for latency-sensitive workloads, service providers delivering differentiated services, and 5G networks with QoS flows.

Benefits of this approach include improved predictability, SLA compliance, better user experience for critical applications, and the potential for more efficient resource use. Challenges involve complexity, the risk of misconfiguration, cross-domain QoS coordination, monitoring and measurement, and potential unfairness among classes, as well as alignment with user-perceived quality (QoE).

See also: QoS, DiffServ, IntServ, SDN, network slicing, RSVP.