差异化连接：5G的全部潜力

Contents Introduction3Current industry trends, outlooks and challenges4for communications service providersCreating a virtuous circle through differentiated6connectivity service offeringsAbroadrangeofapplicationsbenefitfrom8deterministic differentiated connectivityBringingdifferentiatedconnectivitytothemarket8Transformingthevaluechainfordeliveringdifferentiatedconnectivity8Introducing performance levels10Performancelevels:Industry-alignedspecificationsof network connections10Creating a CSP connectivity service offering using performance levels11Creating a differentiated connectivity service offering in seven steps131. Service offering development152. Network upgrade/design/provisioning153. Service offering launch174. Applications: Preparatory steps175. Subscriber sign-up step176.Sessionruntime:Initiationofpremiumconnectivity187.Serviceassurance18Industry action and alignment needs19Immediate actions needed by industry players19Realizing the industry vision at a global scale20Conclusion21Glossary22References23Further reading24Authors25 Introduction Mobilenetworkperformancehasimprovedsignificantlyoverthepastdecades,creating the foundation for our digital society, which paved the way for the smartphoneand application ecosystem. However, mobile connectivity is, in essence, still a best-effortmobile broadband (MBB) service that limits innovation in applications that could greatlybenefitfromconsistent,reliableconnectioncharacteristicstodeliverevenhighervaluetousers. For mobile connectivity to match the evolutionary potential enabled by technologies Inthispaper,wefirstdescribethecurrentsituationinthemobileindustry,includingchallenges faced by application developers and communications service providers (CSPs).Then, we describe how we can achieve a virtuous circle of increased network capabilities,value-generating applications and resulting revenues. We also introduce performance levelsas conceptual vehicles for the industry to move forward. For readers interested in more Current industrytrends, outlooksand challenges for The introduction of MBB revolutionized communications and paved the way for thesmartphone [1]. As new applications and rapid device development provided a steadygrowthinmobiledatatraffic,theCSPbusinessmodeladaptedfromvoiceandSMSto mobile data subscriptions. Additional spectrum and 4G technology made it possible forCSPstoimprovenetworkcapacity,stayaheadofthetrafficcurveandcapitalizeonthe During this decade, there has been a change of dynamics in many markets – network capacityis no longer the bottleneck it used to be. Data buckets have become unlimited or large enoughto rarely be exceeded, smartphone development is incremental, and innovation in new MBB has matured and the revenue growth previously experienced has slowed down.There are three main causes of these developments:1.Withonemainproduct(MBB)withlimiteddifferentiation,consumersfinditincreasinglydifficulttodistinguishbetweenbrands,leadingtogreatercompetitiononprice.2.Since MBB capacity is less of a concern, there is a near-zero marginal cost of adding On the other hand, the acceleration of major cross-industry trends such as digitalization,electrification,andautomationincreasesociety’sdependenceonhigh-performancemobileconnectivity. For example, network capabilities such as Quality of Service (QoS), consistent MBBwillnotbesufficienttocaterforthesedemands,ortoprovideaplatformfornewinnovations. Given the best-effort nature of mobile connectivity, application developerscannot predict the quality of the connection that their globally distributed users willreceive. Since they cannot know in which cell a user will be, or predict or trust the A new approach is needed to break the current downward spiraland raise the value creation capability of cellular connectivity. Creatinga virtuouscircle throughdifferentiatedconnectivityservice offerings Networktrafficconsistsofanabundanceofdifferentdatastreams,allwithuniquecharacteristicsandneeds.Bydifferentiatingthenetwork’sperformanceandmakingitdeterministic*with regards to a set of performance characteristics such as latency andthroughput, it can be offered as specialized connectivity services with reliable performance,to meet the distinct and varied needs of each application and even each application datastream. Differentiated connectivity covers the full spectrum, including application behaviorin client and server, as well as networking technologies such as radio scheduler algorithms, Performance For developers, differentiated connectivity is not only of value because of a low latency orhigh throughput, but also because it is deterministic and reliable. When developers can trustthattheperformance,suchasthethroughputandlatency,willnotdropbelowaspecifiedthreshold, then such connectivity services have a monetizable value. An application can thenbedesignedwithspecificconnectivityrequirementsthatitisknowncanbefulfilled.Thisisillustrated in Figure 1. To ensure the required level of trust, different