Why Latency Matters to Mobile Backhaul - O3b Networks

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Why Latency Matters to Mobile BackhaulConclusionIn the past, a boost in the subscriber data rate was all that was needed,and operators could simply focus on increasing voice minutes and datavolume. But as consumers become more sophisticated and networksbecome more complex with the introduction of mobile broadband, Qualityof Experience has become an important indicator of network performance.Latency is the critical factor in improving QoE across all services, includingtraditional voice services and the latest data services (i.e. interactive cloudbasedapplications and movie downloads).− Voice quality is measurably improved using the ITU model− The response of interactive applications is dramatically improved− File download times are reduced by over 60%The latency of O3b’s MEO constellation is substantially better thantraditional GEO satellites. This has a direct improvement on QoE andprovides a competitive advantage for operators who are deploying modernmobile networks in rural areas.www.o3bnetworks.com 14
Why Latency Matters to Mobile BackhaulAnnexesAnnex 1 Voice Codec, E-Model and MOS scoreThe quality of voice services has been defined in several ITU standards,namely G.107, G.108 and G.109. Quality of the voice services is evaluatedusing a quality factor “R” ranging from 0 to 100.The R factor can be directly translated to a MOS score, as defined in the ITUG.107 recommendation. The mapping formula can be represented by thefollowing curve.Figure 13: MOS Score and R Rating mapping (ITU G. 107 / P. 800)www.o3bnetworks.com 15
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Why Latency Matters to Mobile Backhaul - O3b Networks

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