CESQ
查询信号质量（扩展）：AT+CESQ
执行命令返回接收信号的各个参数。如果当前的服务小区不是一个GERAN小区，<rxlev>和<rxqual >设置为99；如果当前服务小区不是一个UTRA FDD或UTRA TDD小区，<rscp>设置为255；如果当前服务小区不是一个UTRA FDD小区，<ecno>设置为255；如果当前服务小区不是一个E-UTRA小区，<rsrq>和<rsrp>设置为255。
语法规则：
| 命令类型 | 语法 | 返回 |
|---|---|---|
| 执行命令 | AT+CESQ | +CESQ: <rxlev>,<rxqual >,<rscp>,<ecno>,<rsrq>,<rsrp>OK |
参数定义:
| 参数 | 定义 | 取值 | 对取值的说明 |
|---|---|---|---|
<rxlev> | 接收信号强度(received signal strength level ; 3GPP TS 45.008 subclause 8.1.4)；整数型 | 0 | rssi < -110 dBm |
| 1 | -110 dBm £ rssi < -109 dBm | ||
| 2 | -109 dBm £ rssi < -108 dBm | ||
| … | … | ||
| 61 | -50 dBm £ rssi < -49 dBm | ||
| 62 | -49 dBm £ rssi < -48 dBm | ||
| 63 | -48 dBm £ rssi | ||
| … | … | ||
| 99 | 未知或不可测 | ||
<rxqual > | 接收信号质量（请参考3GPP TS 45.008 subclause 8.2.4中表格R中XQUAL值）；整数型 | 0 | BER <0.2 % Assumed value = 0.14 % |
| 1 | 0.2 %<BER<0.4 %Assumed value = 0.28 % | ||
| 2 | 0.4 %<BER<0.8 % Assumed value = 0.57 % | ||
| 3 | 0.8 %<BER<1.6 % Assumed value = 1.13 % | ||
| 4 | 1.6 %<BER<3.2 % Assumed value = 2.26 % | ||
| 5 | 3.2 %<BER<6.4 % Assumed value = 4.53 % | ||
| 6 | 6.4 %<BER<12.8 %Assumed value = 9.05 % | ||
| 7 | 12.8 %<BER Assumed value = 18.10 % | ||
| 99 | 未知或不可测 | ||
<rscp> | received signal code power(请参考3GPP TS 25.133subclause 9.1.1.3 和 3GPP TS 25.123subclause 9.1.1.1.3) ；整数型 | 0 | rscp < -120 dBm |
| 1 | -120 dBm £ rscp < -119 dBm | ||
| 2 | -119 dBm £ rscp < -118 dBm | ||
| … | … | ||
| 94 | -27 dBm £ rscp < -26 dBm | ||
| 95 | -26 dBm £ rscp < -25 dBm | ||
| 96 | -25 dBm £ rscp | ||
| 255 | 未知或不可测 | ||
<ecno> | ratio of the received energy per PN chip to the total received power spectral density (see 3GPP TS 25.133 )；整数型 | 0 | Ec/Io < -24 dB |
| 1 | -24 dB £ Ec/Io < -23.5 dB | ||
| 2 | -23.5 dB £ Ec/Io < -23 dB | ||
| … | … | ||
| 47 | -1 dB £ Ec/Io < -0.5 dB | ||
| 48 | -0.5 dB £ Ec/Io < 0 dB | ||
| 49 | 0 dB £ Ec/Io | ||
| 255 | 未知或不可测 | ||
<rsrq> | reference signal received quality (请参考3GPP TS 36.133 subclause 9.1.7) ；整数型 | 0 | rsrq < -19.5 dB |
| 1 | -19.5 dB £ rsrq < -19 dB | ||
| 2 | -19 dB £ rsrq < -18.5 dB | ||
| … | … | ||
| 32 | -4 dB £ rsrq < -3.5 dB | ||
| 33 | -3.5 dB £ rsrq < -3 dB | ||
| 34 | -3 dB £ rsrq | ||
| 255 | 未知或不可测 | ||
<rsrp> | reference signal received power (请参考3GPP TS 36.133 subclause 9.1.4) ；整数型 | 0 | rsrp < -140 dBm |
| 1 | -140 dBm £ rsrp < -139 dBm | ||
| 2 | -139 dBm £ rsrp < -138 dBm | ||
| … | … | ||
| 95 | -46 dBm £ rsrp < -45 dBm | ||
| 96 | -45 dBm £ rsrp < -44 dBm | ||
| 97 | -44 dBm £ rsrp | ||
| 255 | 未知或不可测 |