Monitoring 4G LTE and IMS Core Performance

Supported Technology


4G LTE (Long Term Evolution) has quickly become the access network technology of choice for next-generation cellular network deployments. It allows mobile operators to offer high-speed mobile connections and cost effective Internet applications, and has been confirmed as the fastest developing mobile system technology ever.

At the same time, the use of multiple vendor technologies creates new challenges in gaining end-to-end visibility of performance and availability of 4G LTE and IP Multimedia Subsystem (IMS) networks and services. The result: a data collection challenge that puts mobile operators at risk of not having visibility into critical network elements when issues arise. This “visibility gap” puts 4G LTE and IMS teams in the dark at exactly the time they need complete, real-time visibility into infrastructure performance.

Additionally, mobile operators face the challenge of monitoring large scale networks as LTE/IMS architecture collapses what were previously two separate networks (voice and data) into a single all-IP system. These networks may include as many as five core, multi-vendor systems: radio access network, aggregation and backhaul, Ethernet packet core, MPLS transport/backbone, and the IMS core.

Meeting 4G Network Performance Challenges

To meet these challenges, SevOne delivers a real-time, end-to-end view of the infrastructure, independent of Element Management System (EMS) and equipment type, and performance metric collection methods. This enables mobile operators to:

  • Effectively manage and optimize capacity while reducing LTE, backhaul, and IMS expenditure and customer churn.
  • Proactively monitor LTE and IMS performance to ensure the infrastructure at all points meets current service level agreements and addresses future demands.
  • Optimize LTE and IMS infrastructures to support increased multi-media traffic levels, markets and geographies.
  • Isolate, determine and alert on performance issues ahead of service impact to meet and exceed customer expectations.

Diagram of the 4G Network Topography

SevOne provides breakthroughs in speed, scalability and ease of use, providing complete and immediate visibility by collecting and monitoring all performance indicators, with no limits. Regardless of infrastructure size, it delivers affordable, real-time system wide visibility without sacrificing the speed required to effectively troubleshoot service-impacting events.

LTE and IMS Performance Visibility

SevOne integrates with the vendor-specific EMS for each LTE and IMS component for the bulk collection of key performance statistics. This unique approach avoids the overhead of directly polling or collecting performance data from individual network elements, and reduces the overhead of adds, moves and changes as the number of network elements grow. SevOne employs standard network performance protocols to collect, report and graph performance statistics directly from routers, switches, servers and firewalls, as well as every application, operating system, or process that is generating network traffic. In addition, it gathers flow data, giving mobile operators crucial insight into bandwidth usage and performance, and enabling them to look beyond simple network utilization statistics, so they can identify who is talking to whom, and who is using the most network resources.

Diagram of Gathering, Transfer, Parsing

SevOne works with leading mobile operators to collect performance statistics from the EMS of their Backhaul, IMS and LTE equipment providers. Starting with routers at the cell-site and following the data path back through the entire network to the core, SevOne can monitor all of the components in the data path (including eNodeB, PGW, SGW, MME, PCRF, CSCF, HSS, and more) and deliver an end-to-end view of the LTE and IMS infrastructure, independent of equipment type.

This capability coupled with SevOne’s support of more than fifteen performance metric collection methodologies, including SNMP, NetFlow. J-Flow, sFlow and IP SLA, provides end-to-end collection and monitoring capabilities for 4G LTE and IMS infrastructures.