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1、Open5G：5G网络的开放生态ExecutiveSummaryThreekeyapplicationscenariosin5Gbreaktheboundariesofcommunicationbetweenhumanbeingsintraditionalmobilecommunications,forcing5Gtosupportcommunicationofhuman-to-machine,andmachine-to-machine.However,variousapplicationscenariosandr
2、equirementstogetherwithemerginglydiversifiedstandardsandtechnologiescallforanopen5G(Open5G)network,whichisfeaturedwithflexibilityandcustomization.Thiswhitepaperinvestigatestheconcepts,challengesandopportunitiesofOpen5Gnetwork.Themaincontributionsofthiswhitepap
3、erissummarizedasfollows:(1)KeyconceptsofOpen5G:uponanalyzingthetechnicalrequirements,theconceptofopennetworksisprovidedfromthreedifferentopenlevels,namely,black-box,white-boxandgray-boxnetworks.Specifically,black-boxopennetworksprovidethird-partyapplicationsor
4、developerswithsupportingservicesandkeynetworkcapabilitiesviaopenapplicationprogramminginterface(API).White-boxopennetworksrefertothefullyopennetwork,whichincludesopensourcesoftwaredevelopingandwhite-boxinghardwaredesign.Thegray-boxnetworkisanpartialopennetwork
5、,wheretelecomoperatorsandtheequipmentmanufacturerscooperativelydesignthecustomizednetworkdevices.Then,theoverallobjectivesofopennetworkarchitecturearefiguredout.Drivenbydevelopingrequirements,opennetworkarchitectureshoulddecouplenetworkcapabilityprovidersandso
6、lutionproviders,enablingtheformertoeffectivelydesignnetworkarchitectureswithfiniteresourcesandreducingthedependenceofthelatteronthetechnicaldetails.(2)EnablingtechnologiesofOpen5G:foropencorenetwork,3GPP5Gservice-basedarchitectureisdiscussedandthenMulteFire-ba
7、sedbasestationandopencorenetworkadoptingdistributedmanagementsisprovided.Centralizedunit/distributedunit(CU/DU)architectureofopenradioaccessnetworkisdiscussed,featuredwithopenCU,openAPItoDU,andwhite-boxingremoteradiounit/activeantennaunit(RRU/AAU).Afterdefinin
8、gtheopenterminalfromtheviewofequipmentcapabilityandopenness,anopenterminalarchitectureisgiven,includingopensoftware/hardwareresourcearchitecture,andopenconfigurationandmanagementla
