TI A Performance Assessment of the GSM Radio Link Protocol (RLP) AU Brian W. Marsden LT UMCS-91-4-2 OR UMCS AV http http:www.cs.man.ac.ukcsonlycstechrepAbstractsUMCS-91-4-2.html AV email techreports@cs.man.ac.uk MN April YR 1991 AB his paper presents the results of a simulation evaluation of the Radio Link Protocol (RLP), which is an adaptation of HDLC for use on radio links in cellular networks. The RLP protocol is first described, in particular the ways in which it differs from standard HDLC, in the context of the special characteristics of radio links. The simulation model is then discussed, with particular emphasis on the choice of operational parameters and error recovery policies, which are crucial issues given a radio link which is inherently unreliable and contributes a propagation delay considerably in excess of the time taken to transmit a frame. The results of the study are then presented, with recommendations of suitable operational parameter values and some suggested changes to the RLP specification. The central aim of this work is to determine the combination of operational parameters which will maximise throughput and minimise transit time for a useful range of link error rates.