In this work the performance of the radio link control (RLC) level of the Universal Mobile Telecommunications System (UMTS) is investigated. The role of a correct setting of link layer parameters is evaluated by considering both forward and backward channel metrics. End-to-end performance is obtained considering the TCP flow. The main findings of our investigation are that: i) a correct setting of RLC parameters is pivotal to avoid deadlock events, that would lead to a dramatic performance degradation; ii) schemes using receiver-driven retransmission requests give the best performance; iii) the EPC mechanism gives very good performance in terms of delay, throughput and energy; iv) anomalous behaviors, leading to delay jitter performance degradation, are observed for some receiver-driven schemes. Again, EPC is able to overcome these problems.

On the UMTS RLC Parameters Setting and their Impact on Higher Layers Performance

ROSSI, MICHELE;ZORZI, MICHELE
2003

Abstract

In this work the performance of the radio link control (RLC) level of the Universal Mobile Telecommunications System (UMTS) is investigated. The role of a correct setting of link layer parameters is evaluated by considering both forward and backward channel metrics. End-to-end performance is obtained considering the TCP flow. The main findings of our investigation are that: i) a correct setting of RLC parameters is pivotal to avoid deadlock events, that would lead to a dramatic performance degradation; ii) schemes using receiver-driven retransmission requests give the best performance; iii) the EPC mechanism gives very good performance in terms of delay, throughput and energy; iv) anomalous behaviors, leading to delay jitter performance degradation, are observed for some receiver-driven schemes. Again, EPC is able to overcome these problems.
2003
Proceedings of IEEE Vehicular Technology Conference, 2003 (VTC 2003-Fall 2003)
0-7803-7954-3
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2454158
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