Quectel_EC20_GNSS_AT_Commands_Ma

Quectel_EC20_GNSS_AT_Commands_Manual_V1.1(1)

　　EC20是移远通信最近推出的LTE模块，采用LTE 3GPP Rel.9技术，支持最大下行速率100Mbps和最大上行速率50Mbps，同时在封装上兼容移远通信UMTS/HSPA+ UC20模块，实现了从3G网络向4G网络轻松平滑过渡。EC20系列模块包含EC20-A，EC20-C和EC20-E三个版本，使其能够向后兼容现存的EDGE和GSM/GPRS网络，以确保在缺乏3G和4G网络的偏远地区也能正常工作。

1.1. How to Use GNSS EC20 GNSS engine allows calculating location without any assistance from the network. The procedure of turning on GNSS is shown as below： Step 1： Configure corresponding demands by AT+QGPSCFG. Step 2： Active GNSS engine by AT+QGPS. Step 3： After GNSS session is started successfully and GNSS has fixed， positioning information can be obtained by three ways： 1） NMEA sentences output to “usbnmea” port by default， you can read the port to obtain NMEA sentences. 2） You can use AT+QGPSLOC to obtain some positioning information directly， such as latitude， longitude， height， time and positioning type and so on 。 3） After enabling by AT+QGPSCFG， you can acquire the specified NMEA sentence by AT+QGPSGNMEA. If is disabled， this command cannot be used.