Implementation of GPRS Service on Mobile Network Based OSMOCOM

Indonesia has a large land area with varying earth contours, in some areas it is not covered by the General Packet Radio Service (GPRS) network because of the limited installation. Therefore, a mini repeater design is needed to reach these areas. This research was implemented a GPRS service using Open Source Mobile Communication (OSMOCOM) for areas where the signal was not covered. In this study, a method was developed to build a GPRS service infrastructure network, so that areas that are not covered by signals can still utilize internet services through cellular networks and GPRS services. This system employed Osmo Base Transceiver Station (OsmoBTS), Osmo Network in the Box (OsmoNITB), Osmo Packet Control Unit (OsmoPCU), Osmo Serving GPRS Support Node (OsmoSGSN) and Osmo Gateway GPRS Support Node (OsmoGGSN) as virtual system. From the performance testing on the system that was implemented, the GPRS service was successfully run via a smartphone. Users can access cellular and GPRS networks through networks which are transmitted by Universal Software Radio Peripheral (USRP) devices. The smartphone was connected to the internet through the Access Point Name (APN). The implemented system was able to provide quality warranty services such as throughput of 1070.1 bytes, delay of 1.1 seconds and packet loss of 4.3%.