Test solutions target VoLTE network applications

8th February 2016
Posted By : Mick Elliott
Test solutions target VoLTE network applications

The latest Voice over LTE (VoLTE) test solutions to measure Voice, Video, and Data Quality over the network has been introduced by GL Communications. Robert Bichefsky, a Senior Manager for product development of the company said. “Long Term Evolution (LTE) is the so called 4th Generation (4G) mobile standard in the rapidly evolving mobile technologies. Its distinguishing feature is an all IP infrastructure and significantly greater air interface bandwidth to the mobile handset.”

Though LTE is an advanced and evolved standard for mobile technology, challenges are significant for service providers while adoption due to issues like backward-compatibility, inter-operability and high quality requirements when deploying high-quality voice, video, and data services.  

Efficient and smooth deployment of aforementioned services calls for a rigorous testing solution. GL is now providing fully automated testing solutions for LTE, VoLTE, and other components of IMS network. The automated test solution covers: End-to-End Voice, Video, and Data Quality Testing with speech metrics using the POLQA algorithm.

The VQuad solution supports testing Wideband voice over the VoLTE network and generating POLQA VQT MOS along with Delay measurements, Signal/Noise Level Gain, and Jitter. The true performance of the VoLTE network based on customer perception can be realised. All elements within LTE-IMS wireless infrastructure can be tested with GL's general-purpose protocol simulation tool called MAPS, which supports simulation of various interfaces of LTE (S1-u, S1-MME, X2, S3, S4, S5/S8, S6a, S10, S11, S13, S16) and IMS (Cx/Dx, Rx, Gx, Gm, SGi, Mw, Mi, Mj) interfaces using MAPS LTE & IMS simulators. With these, one can simulate VoLTE calls in lab, and study the network behavior.

GL’s PackletScan , an all IP monitoring and analysis probe along with NetSurveyorWeb provides centralised monitoring of entire LTE-IMS network.

Said Bichefsky, “Using GL's VQuad, along with centralised analytical tools, voice, data, as well as video quality can be tested simultaneously on a wireless or wired network. Since the GL's VQuad solution is network independent, all Voice and Data networks are supported including 3G, 4G, WiMax, LTE, Advanced LTE and the upcoming 5G.  And since the GL VQuad solution supports both Narrowband and Wideband traffic, VoLTE testing is fully supported.”

Using the GL's VQuad application with the Dual UTA, or all-in-one VQuad Probe, voice, video, and data quality tests are supported for practically any end-point (supporting true customer experience).

The VQuad Probe (VQuad-Dual UTA- PC in single box) provides multiple interfaces for connecting to any communication device within a network using an efficient, portable, single box solution. GL's VQuad NetTest solution provides automated data testing on Mobile Devices (Android and Apple) as well as PC based internet connections.

Voice Quality Testing with POLQUA can be achieved using GL's VQT software along with  VQuad that supports the next-generation voice quality testing standard for fixed, mobile and IP-based networks using POLQA (ITU-T P.863). POLQA, the successor of PESQ (ITU-T P.862) analysis, is the next generation voice quality testing standard for fixed, mobile and IP-based networks.

Based on ITU standard ITU-T P.863, POLQA supports the latest HD-quality speech coding, and higher-bandwidth audio signals suitable for Fixed, Wireless (3G, 4G/LTE) and VoIP networks. Automated voice quality testing using POLQA can be performed through VQuad scripting.


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