What are the key performance indicators (KPIs) and metrics for VoLTE QoS and QoE monitoring and reporting?

1 VoLTE QoS and QoE concepts

QoS and QoE are two related but distinct concepts that measure different aspects of VoLTE performance. QoS refers to the technical parameters that characterize the network conditions and the ability to deliver voice packets with minimal delay, loss, jitter, and error. QoS is usually measured by objective metrics, such as call setup success rate, call drop rate, packet loss rate, jitter, and mean opinion score (MOS). QoE, on the other hand, refers to the subjective perception and satisfaction of the end users with the voice service. QoE is influenced by many factors, such as user expectations, preferences, emotions, and context. QoE is usually measured by subjective metrics, such as rating scales, surveys, or feedback.

2 VoLTE QoS and QoE standards and requirements

To ensure a consistent and acceptable level of VoLTE QoS and QoE, service providers and network operators need to follow some standards and requirements that define the minimum criteria and thresholds for VoLTE performance. One of the main sources of these standards and requirements is the 3rd Generation Partnership Project (3GPP), which is a collaboration of telecom associations that develops technical specifications for mobile communications. 3GPP has defined several documents and recommendations that specify the VoLTE QoS and QoE parameters, such as TS 36.331, TS 36.413, TS 23.203, TS 26.114, and TS 26.131.

3 VoLTE QoS and QoE monitoring and reporting tools

To measure and analyze VoLTE QoS and QoE metrics, service providers and network operators use various tools and methods for collecting, processing, and displaying data from different sources and layers of the network. Network probes capture and decode voice packets and signaling messages from network interfaces, such as the RAN or IMS, while drive tests measure VoLTE coverage, signal strength, handovers, and quality in real-world scenarios. User equipment logs record the activities and performance of mobile devices during VoLTE calls, such as RRC states or VQIs. Finally, user feedback provides opinions and ratings of end users about the VoLTE service through surveys, questionnaires, or comments.

4 VoLTE QoS and QoE optimization and troubleshooting

The results of VoLTE QoS and QoE monitoring and reporting tools can help service providers and network operators identify areas and causes of poor VoLTE performance, so that they can take actions to optimize and troubleshoot the VoLTE service. These actions may include adjusting network parameters and configurations, such as QCI values or admission control policies. It may also involve upgrading or expanding network capacity and resources, resolving network faults and errors, or enhancing user experience and satisfaction with incentives, discounts, or features.

5 VoLTE QoS and QoE best practices and trends

For a high-quality and competitive VoLTE service, service providers and network operators should adhere to best practices and stay up-to-date with the latest trends and developments in VoLTE QoS and QoE. This includes a holistic, end-to-end approach to VoLTE QoS and QoE management that involves all network domains, stakeholders, and processes. Additionally, a customer-centric and data-driven strategy should be adopted to understand and meet user needs and expectations. Advanced technologies such as AI, ML, cloud computing, or edge computing can also be leveraged for VoLTE QoS and QoE enhancement.