Performance study of GPRS traffic over the shared radio channel resources of an existing GSM mobile network | |
| Author | Cheerapa Nartplypan |
| Call Number | AIT RSPR no. TC-01-12 |
| Subject(s) | Telecommunication--Traffic Global system for mobile communications |
| Note | A research study submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-01-12 |
| Abstract | In recent years, the use of wireless data applications has become more popular due to the increasing demand of information, anywhere and anytime. At present, the data transmission is offered by GSM system, which has been one of the most successful digital mobile telecommunication systems, but only up to 9.6 kbit/s. The current GSM data services are based on switched circuits, providing a permanent link between the data and end-points. The new standard, General Packet Radio Service (GPRS), will be deployed in existing GSM networks in order to offer data rates in the range 14.4 kbit/s (single slot) and 115.2 kbit/s (multi-slot) depending on user terminal capabilities and system interference. In this research, GPRS performance on the shared radio channels resources on the existing GSM network is studied through measurements and simulation. The GSM traffic and GPRS test traffic before launching the service are analyzed based on the daily measurement data of one cell in AIS' network. The behavior of traffic profile is studied in the normal mode and in half rate mode of GSM. The measurement results indicate that increasing radio channel capacity by half rate mode not only removes the GSM blocking probability but also reduces the GPRS blocking probability. In the simulation, the real GSM traffic measurement results are used to simulate the unused voice channels for GPRS call arrivals. In addition, there are many factors affecting the failed call performance of GPRS, such as the maximum number of users using one channel simultaneously, number of channels dedicated to GPRS users only, and the parameters of Access queue including the capacity of the queue and the maximum time user can stay waiting in the queue. The simulation results show the performance measured per cell as blocking probability versus arrival rate. It is shown that the performance of the system can be improved by changing the total number of channels in GSM/GPRS system and the channels dedicated only to GPRS users as well. |
| Year | 2001 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-01-12 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Erke, Tapio; |
| Examination Committee(s) | Ahmed, Kazi M. ;. Teerapat Sanguankotchakom ; |
| Scholarship Donor(s) | Advanced Info Service Public Company Limited Bangkok, Thailand ; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2001 |