Universal Mobile Telecommunications System (UMTS); LTE; Active Antenna System (AAS) Base Station (BS) transmission and reception (V15.3.0; 3GPP TS 37.105 version 15.3.0 Release 15)
The present document establishes 2 sets of minimum requirements and minimum performance requirements; hybrid requirements set which specify requirements for a hybrid AAS BS with both a conducted and a radiated interface and OTA requirements set which specify requirements for an OTA AAS BS which has a radiated interface only. The hy brid AAS BS requirements are specified for E-UTRA AAS Base Station (BS)@ the FDD mode of UTRA AAS Base Station (BS)@ the 1@28 Mcps TDD mode of UTRA AAS Base Station (BS) in single RAT and any MSR AAS Base Station (BS) implementation of these RATs (including NR BS type 1-H MSR configurations). The OTA AAS BS requirements are specified for E-UTRA AAS Base Station (BS)@ the FDD mode of UTRA AAS Base Station (BS)@ in single RAT and any MSR AAS Base Station (BS) implementation of these RATs (including NR BS type 1-O MSR configurations). The present document does not establish minimum RF characteristics or minimum performance requirements for Narrow-Band Internet of Things (NB-IoT) in band@ NB-IoT guard band@ or standalone NB-IoT operation@ for AAS BS in single RAT E-UTRA operation or in MSR operation using E-UTRA.