A recent white paper from Analysys Mason and Polystar outlines the key technical considerations, assurance and optimisation challenges, and the solutions available, in understanding and deploying VoLTE (Voice over LTE) and VoWiFi (Voice over WiFi) services from IMS (IP Multimedia Subsystem) to core to RAN (Radio Access Network).

In the paper – VoLTE/VoWi-Fi: Crucial deployment and assurance considerations for operators – written by Anil Rao, the benefits in using VoLTE are examined and the challenges which providers may find in migrating to the system.

Rao states that increased spectral efficiency and improved voice-domain efficiency are the main business benefits of migrating to VoLTE, in addition to the savings that can be achieved by retiring legacy 2G infrastructure.

But he adds that an uncertain business case, and the high costs of deploying an IP multimedia subsystem (IMS) platform, the backbone of VoLTE, continue to be significant inhibitors, especially for Tier 2 and Tier 3 operators.

In spite of the rise of data services, voice continues to be a significant source of revenue for mobile operators. The onus is on the operators, given the current proliferation and consumer desire for OTT (over-the-top content) voice and messaging services, to get it right when switching to VoLTE.

VoLTE challenges diagram

VoLTE challenges diagram

Operators who want to launch VoLTE should consider cost-efficient and lightweight IMS solutions that can enable them to quickly deploy and offer the service, while providing a clear migration path to a full IMS solution.

Anil Rao is a member of Analysys Mason’s Telecoms Software research team and is the lead analyst for the Service Assurance programme, focusing on producing market share, forecast and research collateral.

At SmartIPX, we manage tools that enable our customers to leverage this operator investment, allowing our partners to focus on their customer experience in an IP anywhere and everywhere environment. Contact us for a no-obligation chat about how we can help via our Network Operation Centre services.

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