5G主动保障：拥抱崭新的未来

5G Active Assurance:Embracing a NewPerspective Contents 5G Opportunities and Challenges3How Active Assurance Rises to the 5G Challenge7Advantages of Active Assurance8Deploying Active Assurance in 5G Networks10Active Assurance Use Case: Edge Networking12Testing in a 5G World14 5G Opportunities and Challenges 5G is here. According to Ericsson1, there were 1.4 billion 5G subscriptions worldwideacross 280 service providers by the end of 3Q 2023. 5G is driving a wide range of newuse cases beyond simple voice and data: Advanced 5G TechnologiesCreate New Revenue Opportunities Automotive Spirent eBook Series SPIRENT 5G ACTIVE ASSURANCE EBOOK The demand for these new use cases bringswith it exciting opportunities for new servicesand revenues but these opportunities don’tcome for free. They are underpinned by newtechnologies and a cloud-centric architecturethat bring new capabilities, but also newchallenges. In this eBook, we focus on thepost-development challenges of deploying,operating, and optimizing 5G. We’ll explainwhy service assurance needs a completerethinking to address these challenges andhighlight why active service assurance(or more simply active assurance) must bepart of the solution. We begin with how 5G is changing thenetwork and the assurance challengesthese changes are driving. The passive analysis of user traffic and signaling SPs historically reliedon for service assurance isn’t accessible outside their own networkand can’t help them with new resources prior to launch, as there isno live traffic yet. As SPs move to 5G they’ll need to rethink how theyget visibility of the entire network – even the parts they don’t own orcontrol. With more vendors and more layers in their networks, and aconstant stream of updates, they’ll need a new approach that ensuresnewly activated resources deliver the high quality and performancenext-gen use cases require. Today’s 5G Networks are Dynamic Hybrid Clouds. The core network has become cloudified and the radio network is beginninga long evolution. 5G network functions scale in and out dynamically. Theyno longer sit in a physical box, co-located with groups of related functions.This new disaggregated architecture brings an expanded vendor ecosystemwith more layers and interfaces, leading to a constant stream of new andupdated functions and services going live. On top of this, the path fromusers to apps and resources can (and does) change dynamically. Key partsof the path may pass through cloud or physical infrastructure that serviceproviders (SPs) don’t own or control due to leveraging 3rd-party cloudproviders or supporting private mobile networks. SPIRENT 5G ACTIVE ASSURANCE EBOOK The Edge of the Network Is Expanding. Everything about 5G networks is bigger. For 4G, a large national provider might have anetwork topology with ten physical data centers. Mobile core functions deployed at theselocations represent the edge of the mobile network – the point at which core networksinterface with radio networks via IP aggregation and backhaul networks. While expensive,for 4G, a service provider could deploy service assurance probes at each of theselocations to effectively monitor all user traffic and signaling. With 5G, it’s a much different story. Due to the need for lower latency, 5G core networksfor a large national provider will extend to 50+ edge data centers around the country. Andit doesn’t stop there. Providers are already making plans to move core network functionseven closer to end-users with “far edge” data centers. For a national provider, therecould be hundreds of these. In addition, private 5G offerings from carriers will locate corenetwork functions at enterprise locations, for an even greater number of far edge datacenters that will need attention. 4G core network topology(few edge data centers) Let’s Look Closer What’s driving 5G’s expanding edge? New use cases such as mobile VR gamingrequire latencies of 7-15ms. Latency requirements for some industrial applicationsare as low as 1ms. These ultra-low latencies are only possible using edge data centers.Download our report Cutting through the edge computing hype to learn more. A 5G service assurance model must cost-effectively match this expanded footprint. Faredge data centers will likely have limited physical footprints, and energy and bandwidthrestrictions. The potential costs of passive service assurance probes that monitor all usertraffic, all the time, in all these locations is prohibitive, even if resource needs could be met.To overcome these assurance challenges, fresh thinking for 5G is needed. 5G core network topology(many edge data centers andhundreds of far edge) SPIRENT 5G ACTIVE ASSURANCE EBOOK Cybersecurity + Encryption. In the past, networks had perimeters. Beyondthe firewall, traffic was encrypted. Withinthe perimeter, it wasn’t needed. But now,there is no perimeter – everything is outsidethe firewall. The result? Now everything isencrypted everywhere. At the same time,mu