38.104,Base Station (BS) radio transmission and reception

BS type 1-C,单端口传输验证型


BS type 1-H,

BS type 1-O and BS type 2-O,

一般关注BS type 1-C,单端口传输验证型

FR1和FR2

band定义


传输带宽配置

保护带


多u传输时,保护带

基站可配置的带宽与SCS,band的关系

NR-ARFCN,RF reference frequency FREF以MHz表示

合法的NR-ARFCN与Band的关系

同步Raster

合法的GSCN与band的关系

射频发射要求

6.2 Base station output power

6.3 Output power dynamics

6.4 Transmit ON/OFF power

6.5 Transmitted signal quality

输出信号的频率不可避免会有一定的偏差,我们用频率误差(Frequency Tolerance)或频率稳定度(Frequency Stability),用单位ppm来表示,即百万分之一(parts per million)(1/10^6),是相对标称频率的变化量,此值越小表示精度越高。比如,12MHz晶振偏差为±20ppm,表示它的频率偏差为12×20Hz=±240Hz,即频率范围是(11999760~12000240Hz)

6.6 Unwanted emissions


射频接收要求

7.2 Reference sensitivity level

7.3 Dynamic range,有干扰的AWGN信号进来,信号依然可以解析的能力

7.4 In-band selectivity and blocking

7.5 Out-of-band blocking

7.6 Receiver spurious emissions

7.7 Receiver intermodulation

7.8 In-channel selectivity


各个信道都有信号质量检测需求

PUSCH

PUSCH传输预编码使能


另外还有(最小要求只在小带宽配置下时要求):

PUSCH传输预编码使能的情况

UCI复用PUSCH的情况

高速运动下的性能

2-Step RA,RRC Resume

等等


PUCCH

8.3.1 DTX to ACK probability

The DTX to ACK probability, i.e. the probability that ACK is detected when nothing was sent

- #(false ACK bits) denotes the number of detected ACK bits.

- #(ACK/NACK bits) denotes the number of encoded bits per slot

- #(PUCCH DTX) denotes the number of DTX occasions

8.3.3.1 NACK to ACK requirements

The NACK to ACK detection probability is the probability that an ACK bit is falsely detected when an NACK bit was sent on the particular bit position

- #Total NACK bits denotes the total number of NACK bits transmitted

- #NACK bits decoded as ACK bits denotes the number of NACK bits decoded as ACK bits at the receiver, i.e. the number of received ACK bits

- NACK bits in the definition do not contain the NACK bits which are mapped from DTX, i.e. NACK bits received when DTX is sent should not be considered.

8.3.3.2 ACK missed detection requirements

The ACK missed detection probability is the probability of not detecting an ACK when an ACK was sent.

8.3.4.2 UCI BLER performance requirements

The UCI block error probability (BLER) is defined as the probability of incorrectly decoding the UCI information when the UCI information is sent. The UCI information does not contain CSI part 2.


PRACH

8.4.1 PRACH False alarm probability

The false alarm probability is the conditional total probability of erroneous detection of the preamble (i.e. erroneous detection from any detector) when input is only noise.

8.4.2 PRACH detection requirements

The probability of detection is the conditional probability of correct detection of the preamble when the signal is present. There are several error cases – detecting different preamble than the one that was sent, not detecting a preamble at all or correct preamble detection but with the wrong timing estimation.


附录

A1 - A5, FRC 1-5 parameters

A6, Prach preamble

A7-A9,FRC 7-9parameters

B, FR1的EVM定义,参考测量点等

C, FR2的EVM定义,参考测量点等

G,Propagation conditions,传播环境,AWGN,多径衰落

与多普勒频偏组合时

还有MIMO信道相关矩阵,多普勒频偏的定义等

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