ide Compared to LTE where everything is included in TS 36.101, for NR, 3GPP has decided to split 5G UE RF and demodulation performance requirements into four different spec- ifications in order to keep the content more compact and focused: TS 38.101-1 NR; User Equipment (UE) radio transmission and reception; Part 1: Range 1 Standalone TS 38.101-2 NR; User Equipment (UE) radio transmission and reception; Part 2: Range 2 Standalone TS 38.101-3 NR; User Equipment (UE) radio transmission and reception; Part 3: Range 1 and Range 2 Interworking operation with other radios TS 38.101-4 NR; User Equipment (UE) radio transmission and reception; Part 4: Per- formance requirements TS 38.101-1 includes FR1 UE transmitter and receiver RF requirements for single car- rier, 5G carrier aggregation, 5G NR-NR dual connectivity, supplementary uplink, and ANT #1: 3.5 GHz ANT #1: Main Tx/Rx Main Tx/Rx ANT #1 Main Tx/Rx ANT #2: ANT #2: MIMO/DRx 4.5 GHz MIMO/DRx RFIN_2 SRS Tx SRS Tx ANT #2 remote ANT #3: ANT #3: MIMO Rx MIMO/DRx MIMO/DRx SRS Tx SRS Tx RX module SPn'T ANT #3 ANT #4: remote ANT #4: MIMO/DRx MIMO Rx MIMO/DRx SRS Tx SRS Tx RX module SRS symbol SRS symbol ANT #4 to ANT #1 to ANT #2 MIMO Rx SRS symbol SRS symbol SRS symbol SRS symbol SRS symbol SRS symbol to ANT #1 to ANT #2 to ANT #3 to ANT #4 RX module to ANT #3 to ANT #4 Figure 12.9 SRS antenna switching: (a) 1T4R concept, (b) example relying on external switches, (c) 2T4R concept. 12.3 5G Standalone Performance Aspects in Frequency Range 1 uplink MIMO operation. All requirements are intended to be verified with conducted tests. TS 38.101-2 includes FR2 UE transmitter and receiver RF requirements for single car- rier, 5G carrier aggregation, and uplink MIMO operation. All requirements are intended to be verified with radiated tests. TS 38.101-3 include UE transmitter and receiver RF requirements for 5G CA between FR1 and FR2, EN-DC (dual connectivity between LTE and 5G), and NR-DC (5G dual connectivity between FR1 and FR2). In most of the cases, TS 38.101-3 does not state 