Effects of circuit switched transmissions over GPRS performance

  • Authors:

  • Wessam Ajib;Philippe Godlewski

  • Affiliations:

  • Computer sciences and networks Department, École Nationale Supérieure des Télécommunications (E.N.S.T.), 46, rue Barrault 75013 Paris, France;Computer sciences and networks Department, École Nationale Supérieure des Télécommunications (E.N.S.T.), 46, rue Barrault 75013 Paris, France

  • Venue:
  • Proceedings of the 3rd ACM international workshop on Modeling, analysis and simulation of wireless and mobile systems
  • Year:
  • 2000

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Abstract

This paper investigates the effect of circuit switched transmissions over General Packet Radio Service (GPRS) performance. GPRS is an additional GSM service, which provides packet switched data services over GSM network and a packet access to data networks. Radio resources, available in a GSM cell, are shared dynamically between GPRS and GSM circuit switched services and the physical channels associated to GPRS are called Packet Data Channels (PDCH). In this paper, we propose new procedures of physical channels assignment to mobile stations in order to integrate voice transmissions (circuit switching) and data transmissions (packet switching) over GSM network. However, these procedures can be used for diversified types of TDMA-based wireless networks. The proposed protocols are described and their performance is evaluated. Besides, the performance of GPRS system is evaluated in the case of a fixed number of PDCHs. The effect of voice activities on GPRS performance is analyzed and evaluated considering the best effort performance parameters and World Wide Web (WWW) application.