Shaoji Ni

GPRS-GSM

Goal: The GPRS is designed to utilize those channels unused by the circuit switched services to transmit short bursts of packet data. However, the introduction of GPRS into GSM networks without allocating new spectrum will increase the interference probability of circuit switched services. The goal of this research are:
1. Investigating the GPRS impact on existing GSM radio network [1, 2].
2. Providing a method to calculate the remaining capacity of an existing network [1].
3. Investigating the GPRS performance [3]
4. Providing some guidelines for system evaluation and planning, as well as the admission control.

Publications

[1] Shaoji Ni, Yong Liang, Sven-Gustav Häggman, "Outage Probability in GSM-GPRS Cellular Systems with and without Frequency Hopping," to appear in Wireless Personnel Communications, an International Journal in Mobile Communications and Computing.

[2] Shaoji Ni, Yong Liang, Sven-Gustav Häggman, "Outage Probability for GPRS over GSM Voice Services," in the Proceedings of IEEE Vehicular Technology Conference 1999-Fall, 19-22 September, Amsterdam, The Netherlands, pp. 839-843.

[3] Shaoji Ni, Sven-Gustav Häggman, "GPRS performance estimation in GSM voice and GPRS shared resource system," in the Proceedings of 1999 IEEE Wireless Communication and Networking Conference, Sept. 22-24, 1999, New Orleans, USA, pp. 1417-1421.