6605 - Open Hardware Radio Unit for OpenRAN.pdf

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1、Dr.Andreas Benzin,CEO,Massive BeamsOpen Hardware Radio Unit for OpenRANOpen Hardware Radio Unit for OpenRANDr.Andreas Benzin,CEO,Massive BeamsOCP Special Focus:OpenRanOpenRANO-RAN Fronthaul split:trade-off between virtualization/cloudification capability and fronthaul data-rateReduction of fronthaul

2、 data-rate achieved through:IQ Compression,exchange of only utilized OFDM frequency-domain samples,cyclic prefix added in RU and optional precoding in O-RU5G-NR gNB using O-RAN OverviewVirtualization/cloudification examples using O-RAN FronthaulOperator can trade-off:cell site size vs.cell site tran

3、sport capacity vs.pooling&interference coordination gainFronthaul requires 10 x of backhaul/midhaul transport capacity!5G-NR gNB using O-RAN Overview O-RAN Fronthaul split:trade-off between virtualization/cloudification capability and fronthaul data-rateReduction of fronthaul data-rate achieved thro

4、ugh:IQ Compression,exchange of only utilized OFDM frequency-domain samples,cyclic prefix added in RU and optional precoding in O-RU5G-NR gNB using O-RAN OverviewO-RAN fronthaul split is carefully chosen,based on operator flexibility requirementshigh-level functionalities of O-RU are always the same

5、and fixed:O-RAN Radio Unit(O-RU)O-RU can be split into 3 distinct modules:Modular Radio Hardware BlocksSmall cell most often:1CC,100MHz bandwidth,2-4 MIMO streams,3.5GHz band,TDD,0.5W per ant.portModular Radio Small CellCM&TRM reused,single PA modulese.g.:Dual Band,n78(TDD)+n1(FDD),40dBm(10W)output

6、power per antenna portModular Radio Macro CellCompute Module Con:COM-HPC(PICMG)TRx Module Con:FMC+(VITA 57.1)Electrical properties of signals already defined by IEEE,JEDEC,3GPP,O-RAN AllianceModule connectors and pin assignments need to be standardized(through OCP?)Modular Radio