LUSR, in the context of telecommunications and network performance, typically stands for “Location Update Success Rate.” It is a key performance indicator (KPI) used to measure the success rate of location update attempts in a mobile network. Location updates are a fundamental part of the mobility management in GSM and other cellular networks, allowing the network to keep track of the geographical location of a mobile device.
Relevance in Circuit-Switched Voice Networks:
In circuit-switched voice networks, particularly on the Mobile Switching Center (MSC), LUSR is relevant because it impacts the network’s ability to efficiently route calls to mobile users. A high LUSR indicates that the network is effectively tracking the location of mobile devices, which is crucial for:
• Call Setup: Ensuring successful call establishment to the intended recipient.
• Resource Allocation: Optimizing the use of network resources by accurately predicting the location of mobile users.
• Roaming Management: Managing roaming scenarios where users move from one network area to another.
• Network Reliability: Maintaining a reliable service by reducing the chances of call drops due to location update failures.
Measuring Performance:
The performance of LUSR on the MSC is typically measured by the ratio of successful location updates to the total number of location update attempts within a given time frame. A lower success rate may indicate issues with network coverage, hardware failures, or other system malfunctions that could affect the overall quality of service (QoS) and user experience.
It’s important to note that while LUSR is a critical metric for circuit-switched networks, modern networks are increasingly moving towards packet-switched technologies like VoLTE (Voice over LTE), where different KPIs might be used to measure performance. However, understanding and optimizing LUSR remains important for the operation and maintenance of existing circuit-switched networks. If you’re looking for more detailed technical information or specific methodologies for measuring LUSR on different types of MSCs, I would recommend consulting technical documentation or reaching out to experts in the field.