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1、 2013 Agilent Technologies Wireless Communications LTE eNodeB 接接 收机一致性测试收机一致性测试 介绍介绍 Agilent Technologies 2013 Agilent Technologies Wireless Communications 2 2013 Agilent Technologies Wireless Communications Agenda 3GPP TS36 141 eNB receiver tests overview Receiver characteristics tests Tips for suc
2、cessful receiver characteristics tests Agilent s Test Solution 2013 Agilent Technologies Wireless Communications 3GPP TS36 141 Rel 9 eNB Receiver Conformance Tests Overview Clause 7 Rx Characteristics 7 2 Reference sensitivity level 7 3 Dynamic range 7 4 In Channel Selectivity ICS 7 5 Adjacent Chann
3、el Selectivity ACS 7 5 Narrow Band Blocking 7 6 Blocking 7 7 Spurious emissions 7 8 Receiver Intermodulation Summary of Test Requirements Tests are performed open loop No HARQ Tests require interfering signals Performance metric throughput Clause 8 Rx Performance Requirements 8 2 Performance require
4、ments for PUSCH 8 2 1 Multipath fading propagation conditions 8 2 2 UL timing adjustment 8 2 3 HARQ ACK multiplexed on PUSCH 8 2 4 High speed train conditions 8 3 Performance requirements for PUCCH 8 3 1 ACK missed detection for sing user PUCCH format 1a 8 3 2 CQI missed detection for PUCCH format 2
5、 8 3 3 ACK missed detection for multi user PUCCH format 1a 8 4 Performance Requirements for PRACH 8 4 1 PRACH false alarm probability and missed detection Summary of Test Requirements Some tests performed closed loop HARQ TA Tests require MIMO and fading Performance metric throughput 3 2013 Agilent
6、Technologies Wireless Communications Changes in LTE Advanced Release 10 Clause 7 No new test added Wanted signal power level requirements added for operating bands for 3 0GHz f 4 2GHz Clause 8 New tests added Uplink MIMO 8 2 1A 8 3 7 8 3 8 Single User 2x2 and 2x4 MIMO configuration PUCCH format 1b w
7、ith channel selection 8 3 4 PUCCH format 3 8 3 5 8 3 6 4 2013 Agilent Technologies Wireless Communications Base Station Class Class Wide Area BS Local Area BS Home BS HeNB BS Type Macro Cell Pico Cell Femto Cell BS to UE Coupling Loss 70dB 45dB Not specified 5 Macro Pico Femto 2013 Agilent Technolog
8、ies Wireless Communications Different Metric BER or Throughput W CDMA BER eNB measures BER by comparing decoded data sequence against reference PN sequence Whole PN9 sequence is required to measure BER Data payload size and frame length only matches at every 511 frames Real Time signal generation or
9、 very large ARB memory is required LTE Throughput eNB measures throughput by number of subframes passed CRC and payload size per subframe Each subframe can be treated separately Do not require to have continuous PN sequence to measure Arbitrary waveform with 1 frame length is sufficient 6 2013 Agile
10、nt Technologies Wireless Communications Receiver Characteristics Wanted Signal Interfering Signal Dynamic Range wanted interferer 5MHz BW Wide Area BS 7 2 Reference Sensitivity Level FRC A1 1 1 2 1 3 QPSK Mod N A 7 3 Dynamic Range FRC A2 1 2 2 2 3 16QAM Mod AWGN 12 6 dB 7 4 In Channel Selectivity FR
11、C A1 2 1 3 1 4 1 5 QPSK Mod E UTRA 17 6 dB 7 5 Adjacent Channel Selectivity FRC A1 1 1 2 1 3 QPSK Mod E UTRA 42 8 dB 7 5 Narrowband Blocking FRC A1 1 1 2 1 3 QPSK Mod E UTRA 45 8 dB 7 6 Blocking in band FRC A1 1 1 2 1 3 QPSK Mod E UTRA 51 8dB 7 6 Blocking out of band FRC A1 1 1 2 1 3 QPSK Mod CW 79
12、8 dB 7 7 Receiver Spurious Emissions NA NA NA 7 8 Receiver Intermodulation FRC A1 1 1 2 1 3 QPSK Mod CW E UTRA 42 8 dB 7 8 Receiver Intermodulation Narrow Band Intermodulation FRC A1 1 1 2 1 3 QPSK Mod CW E UTRA 1RB 42 8 dB TS36 141 Clause 7 Test Requirements Summary 7 2013 Agilent Technologies Wire
13、less Communications 8 2013 Agilent Technologies Wireless Communications Fixed Reference Channel FRC Signals Used for Wanted Signal Reference channel A1 1 A1 2 A1 3 A1 4 A1 5 Allocated resource blocks 6 15 25 3 9 DFT OFDM Symbols per subframe 12 12 12 12 12 Modulation QPSK QPSK QPSK QPSK QPSK Code ra
14、te 1 3 1 3 1 3 1 3 1 3 Payload size bits 600 1544 2216 256 936 Transport block CRC bits 24 24 24 24 24 Code block CRC size bits 0 0 0 0 0 Number of code blocks C 1 1 1 1 1 Coded block size including 12bits trellis termination bits 1884 4716 6732 852 2892 Total number of bits per sub frame 1728 4320
15、7200 864 2592 Total symbols per sub frame 864 2160 3600 432 1296 Table A 1 1 FRC parameters for reference sensitivity and in channel selectivity QPSK R 1 3 2013 Agilent Technologies Wireless Communications 9 2013 Agilent Technologies Wireless Communications 7 2 Reference Sensitivity Level Test Overv
16、iew Test Purpose Measure receiver s ability to receive Reference sensitivity power level PREFSENS Requirement 95 max throughput No interferer or AWGN required Test Channels B lowest frequency channel M middle N 2 1 if number N of carrier is odd T Highest frequency channel Note For 10MHz 15MHz 20MHz where channel BW is wider than wanted signal wanted signal s RB offset shall be adjusted by 25RB to cover entire bandwidth and each instance needs to satisfy the requirement Chann el BW FRC Occupi ed
