GPRS Cell Modem

Wireless Standard - GPRS (Cellular Modem)




This document is designed as a very brief introduction to the GPRS mobile cellular communication standard and operation. The link page points to additional websites where more information is available.


General packet radio service (GPRS) is a packet oriented mobile service available to users of the 2G GSM cellular network. It is available worldwide. It is intended for burst data transmission at between 60-80 kilobits/second (Class 10). GPRS utilizes the Internet Protocol TCP/IP and data is transmitted/received in a TCP/IP packet format identical to an Internet connection. It is a best effort packet transmission using a UDP packet service.


The mobile cellular unit has a complete TCP/IP stack and an IP address. The GPRS system stores and forwards packets to the remote device. This type of connection is often referred to as machine to machine communication and is intended for short bursts of periodic data.


Typical applications include asset tracking where the cell modem is connected to a microprocessor reading a GPS unit. The position location is updated to a central web server over the cellular network.

Periodic reading of mobile sensors and other environmental parameters where wire based transmission is not possible.

WiHART Systems offers a GPRS cell modem module to send and receive data in a mobile application.  A description of the GPRS modem is here.


Latest News

04-17-2010 | DASH7

WiHART Sytems announces a DASH7 product for Asset Tracking and Sensor data acquisition.  DASH7 is the  RF protocol standard IEC 18000-7.  It operates at the unlicensed 433 MHz band for long distance communication with low noise propagation.   The 433 MHz band is glob...


04-04-2010 | WiVIB1

WiHART Systems announces game changing technology for wireless vibration measurement and condition based maintenance.  With the introduction of the WiVIB1 wireless vibration module WiHART Systems brings vibration sensing into the 21st century.  The tiny device which is about 1" square i...


View All News Articles