Implementation of USRP (Universal Software Peripheral Radio) as OpenBTS for Quadruple Play Services

Abstract

The smallest area of mobile phone service called cell. In one cell area, there is one BTS device. Now the people in the world have a mobile phone, but the people who live in remote areas still poorly understood about how to using it. Therefore, OpenBTS is need for people who do not get the services local mobile operators, as well as in areas of natural disasters. In addition, this OpenBTS it is good to know as a new technology in education. This research proposed OpenBTS using hardware USRP and transceiver antenna for transmitting radio signals at frequencies of GSM 900 MHz. OpenBTS connected to a VoIP service for quadruple play service. All software in this OpenBTS using Linux as operating system, the software is GNU Radio to control the USRP, Open BTS to control the BTS operation, and the IMS Core as server on a VoIP service. From the results of research conducted to measure QoS measurement results show that VoIP networks connected with OpenBTS meet the QoS VoIP standard (Delay = <50ms, Jitter = <15ms and Packet Loss = <1%). Testing of OpenBTS parameters related to transmission using Tems Investigation Software obtained an average level of Rx = -55 dBm, average Rx Quality = 1.17, and average SQI = 13.59. No significant difference in communication between MS and OpenBTS, OpenBTS and VoIP clients, or between VoIP clients.