User's Manual

CPE User Manual
第 25 页
的信息。
Bad radio quality can cause the high drop rate , low data rate etc. We can get the radio quality
of the environment by analysis PM log. You can refer to chapter 4.2 to get PM log, and as shown
in fig 5-1 is a full cycle of PM logs. The following three chapter simply describe how to get KPI
information through a full PM cycle.
Fig 5-1 a full cycle of PM logs
5.2.1 CPE 信号强度分析
CPE Signal Strength
在 fig 5-1 标记为 2 和 3 的红色框中，分别可以看到小区的信号强度各个指标
（CINR,RSRP,RSSI）的具体数值，括号中有两个数值表示 CPE 有两根天线，两个值分别与
两根天线相对应，其中包含“[SCC]”字样的为辅载波小区信号强度，各个指标的参考数值
如下所示：
Marked with “2” and “3” in the red area in fig5-1, we can see the values of CINR, RSRP and
RSSI, in parentheses, there are two value meas CPE has two antennas, two values correspond to
two antennas respectively, "[SCC]" meas secondary carrier , the various indicators of reference
values as shown below:
CINR - 这里的 CINR 等效于 SINR，一般要求 CINR 需要大于 17dB，如果低于 17dB，
则可能会导致上下行的误码率偏高，致使传输效率降低，如传输速率达不到预期目标，
丢包率严重等现象。
CINR - the CINR equivalent SINR, CINR needs more than 17 db, if less than 17 db,
maybe lead to CPE UL/DL BLER rising, resulting in reduced the transmission efficiency,
such as transmission is lowly or packet loss is .highly.
RSRP - 建议值是大于-95dBm，RSRP 用于指示小区的有效功率情况，相对较弱的
小区信号不利于空口的传输效率。所以如果信号低于预期值，则建议排查环境.
RSRP - the recommended value is greater than -95dbm, RSRP is used to indicate the
effective power of the eNodeB, and the relatively weak signals are bad for the transmission in
air. So if the signal is below the expected value, please check the environment.