User's Manual

GSM/GPRS/GNSS Module Series
MC20 Hardware Design
MC20_Hardware_Design Confidential / Released 12 / 95
2 Product Concept
2.1. General Description
MC20 is a multi-purpose module which integrates a high performance GNSS engine and a quad-band
GSM/GPRS engine. It can work as all-in-one solution or stand-alone solution according to customers'
application demands. For detailed introduction on all-in-one solution and stand-alone solution, please
refer to Chapter 3.2.
The quad-band GSM/GPRS engine can work at frequencies of GSM850MHz, EGSM900MHz,
DCS1800MHz and PCS1900MHz. MC20 features GPRS multi-slot class 12 and supports the GPRS
coding schemes CS-1, CS-2, CS-3 and CS-4. For more details about GPRS multi-slot classes and coding
schemes, please refer to the Appendix B & C.
The GNSS engine is a single receiver integrating GPS and BeiDou systems. It supports multiple
positioning and navigation systems including autonomous GPS, BeiDou, SBAS (including WAAS,
EGNOS, MSAS and GAGAN), and QZSS. It is able to achieve the industry’s highest level of sensitivity,
accuracy and TTFF with the lowest power consumption. The embedded flash memory provides capacity
for storing user-specific configurations and allows for future updates.
MC20 is an SMD type module with 54 LCC pads and 14 LGA pads which can be easily embedded into
applications. With a compact profile of 18.7mm × 16.0mm × 2.1mm, the module can meet almost all the
requirements for M2M applications, including vehicle and personal tracking, wearable devices, security
systems, wireless POS, industrial PDA, smart metering, remote maintenance & control, etc.
Designed with power saving technique, the current consumption of MC20’s GSM part is as low as 1.2mA
in SLEEP mode when DRX is 5 and the GNSS part is powered off. The GNSS engine also has many
advanced power saving modes including standby and backup modes which can fit the requirement of
low-power consumption in different scenes.
GSM part of MC20 is integrated with Internet service protocols such as TCP, UDP, PPP, HTTP and FTP.
Extended AT commands have been developed for you to use these Internet service protocols easily.
EASY technology as a key feature of GNSS part of MC20 module is one kind of AGPS. Capable of
collecting and processing all internal aiding information like GNSS time, ephemeris, last position, etc., the
GNSS part will have a fast TTFF in either Hot or Warm start.