测试原理和测试方法学习教案

1、会计学1测试测试(csh)原理和测试原理和测试(csh)方法方法第一页，共16页。2Electrical CableCell Site CabinetMobile BackhaulRFBB第1页/共16页第二页，共16页。3FiberMobile BackhaulRFBBMobile Fronthaul: CPRI/OBSAI第2页/共16页第三页，共16页。Mobile Fronthaul Testing4nWhy eCPRI?nCPRI requires high data ratenThis is not scalable for 5G trafficneCPRI is designed

2、 to meet the needs for 5GnImproves bandwidth efficiencynIncreases capacityneCPRI uses packet-based transport network nIP or Ethernet第3页/共16页第四页，共16页。Mobile Fronthaul Testing5第4页/共16页第五页，共16页。6MobileBackhaulBBU PoolCPRI/OBSAI FronthaulRFRFRFBBBBBBBBMobileBackhaulBBU PoolRFBBBBBBBBBBRFBBRFBBeCPRI Fron

3、thaul第5页/共16页第六页，共16页。Mobile Fronthaul Testing7eREeRECBBUSynchronizationC&M DataUser Plane data (I/Q)RRHMobile Fronthaul Transport Network第6页/共16页第七页，共16页。Mobile Fronthaul Testing8Ethernet PHYOptional IP/UDPeCPRI ProtocolI/Q User Data第7页/共16页第八页，共16页。Mobile Fronthaul Testing9The following Ethernet i

4、nterfaces are allowed in the standard:第8页/共16页第九页，共16页。Mobile Fronthaul Testing10Option 1: eCPRI over EthernetOption 2: eCPRI over IP/UDPDestination MACSource MACType = AEFEEthernet PayloadCRCeCPRI HeadereCPRI Payload = I/Q data or control dataOptionalVLANNew eCPRI EthertypeMAC HeaderIP HeaderUDP He

5、aderEthernet PayloadCRCeCPRI HeadereCPRI Payload = I/Q data or control dataOptionalVLAN第9页/共16页第十页，共16页。Mobile Fronthaul Testing11第10页/共16页第十一页，共16页。Mobile Fronthaul Testing12第11页/共16页第十二页，共16页。Mobile Fronthaul Testing13Source: Requirements for the eCPRI Transport Network第12页/共16页第十三页，共16页。Mobile Fronthaul Testing14第13页/共16页第十四页，共16页。Mobile Fr