Performance evaluation of retransmission mechanisms in GPRS networks

TitlePerformance evaluation of retransmission mechanisms in GPRS networks
Publication TypeConference Paper
Year of Publication2000
AuthorsPang, Q., A. Bigloo, V. C. M. Leung, and C. Scholefield
Conference NameWireless Communications and Networking Conference, 2000. WCNC. 2000 IEEE
Pagination1182 -1186 vol.3
Keywordsaccess protocols, air interface, backbone, base station subsystems, cellular radio, client mobile stations, FTP, General Packet Radio Service, GPRS networks, HTTP, Internet, link utilization efficiency, LLC, OPNET, packet radio networks, performance evaluation, radio link error rate, retransmission mechanisms, RLC/MAC, servers, support nodes, TCP, TCP traffic, transmission rate, transport protocols, user-data retransmission

This paper studies the performance of the three retransmission mechanisms (i.e., RLC/MAC, LLC and TCP) in a General Packet Radio Service (GPRS) network accessing the Internet. This assessment is done through the end-to-end performance evaluation of Internet applications such as HTTP and FTP over GPRS. A simulation platform including client mobile stations, base station subsystems, GPRS support nodes, servers and an Internet backbone was implemented in OPNET. The low transmission rate and high radio link error rate over the air interface of a GPRS network affect the overall system performance greatly. Simulation results show that whereas the RLC/MAC block retransmission mechanism is crucial to increase the link utilization efficiency, LLC layer user-data retransmission is not necessary for TCP traffic over GPRS


a place of mind, The University of British Columbia

Electrical and Computer Engineering
2332 Main Mall
Vancouver, BC Canada V6T 1Z4
Tel +1.604.822.2872
Fax +1.604.822.5949

Emergency Procedures | Accessibility | Contact UBC | © Copyright 2021 The University of British Columbia