Architecture options Cloud RAN vDU.pdf

1、Open Edge server use in Cloud RANArchitecture options Cloud RAN vDUEdgeArchitecture options Cloud RAN vDUMika Hatanp,Head of R&D,NokiaArchitecture options Cloud RAN vDUCloud RAN has become a viable option in implementing radio access networks.In this presentation we will introduce Cloud RAN architec

2、ture and cover some of the deployment options of virtualized distributed unit,vDU.The presentation will cover how Open Edge hardware can flexibly support key acceleration technology alternatives for L1 processingCloud Radio Access Network,Cloud RANCloud RAN consists of Radio units(RU),communicating

3、wirelessly with end users(UE)Virtualized distributed units(vDU),processing real-time baseband functionsVirtualized central unit(vCU),processing non-real time baseband functionsUEUE10,000s1,000s100s10s#of sitesCloud RAN deployment optionsvDU is a micro-scale data center withCompute with hardware acce

4、leration StorageNetworkingCloud DRANvDU at cell site vCU at EdgeCloud CRAN vDU at Far Edge vCU at EdgeCloud CRAN vDU and vCU co-locatedat Far Edge vCUCell siteFar EdgeEdgeCorevDURUvCUvDURUFHFHMHBHBHBH250usec RTT20km4-10ms RTT200kmvCUvDURUMH3-10s cells100-1000s cellsCells/siteSmallest,1-2 serversSmal

5、ler,few racksMediumLargeFootprintvDU L1 accelerationProcessing the 5G physical layer(L1)of the front haul interface is very resource intensive.It is commonly acknowledged that hardware acceleration in L1 processing is beneficial from the TCO point of view.Offloading L1 tasks to a specialized acceler

6、ator unit frees expensive CPU resources for other tasks or enables the use of a lower end CPU.Accelerator functions are typically implemented as a PCIe-attached add-in cards in the vDU server.There are two main approaches to L1 HW acceleration,look-Aside and inline.A look-Aside accelerator works tog