Radio resource management schemes for combined GSM/GPRS mobile systems

Konstantinopoulou, CN; Koutsopoulos, KA; Demestichas, PP; Theologou, ME

dc.contributor.author	Konstantinopoulou, CN	en
dc.contributor.author	Koutsopoulos, KA	en
dc.contributor.author	Demestichas, PP	en
dc.contributor.author	Theologou, ME	en
dc.date.accessioned	2014-03-01T01:53:10Z
dc.date.available	2014-03-01T01:53:10Z
dc.date.issued	2003	en
dc.identifier.issn	1530-8669	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26879
dc.subject	GPRS	en
dc.subject	traffic source models	en
dc.subject	interactive services	en
dc.subject	background services	en
dc.subject	QoS parameters	en
dc.subject	GPRS QoS profile	en
dc.subject	radio resource management (RRM)	en
dc.subject	priority-based RRM schemes	en
dc.subject.classification	Computer Science, Information Systems	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	GPRS	en
dc.title	Radio resource management schemes for combined GSM/GPRS mobile systems	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	Data services like Web browsing, e-mail and file transfer are becoming more and more popular in cellular systems. In contemporary systems like Global System for Mobile communications (GSM), data transfer has been circuit-switched, that is, physical resources are allocated to a user for the entire call/session duration. However, this is inefficient in case of bursty traffic, where bursts are separated by long intervals of inactivity. This has been the main reason for the introduction of General Packet Radio Service (GPRS), which on the one hand acts as a mobile access network to the Internet, while on the other hand it enables the operator to offer a wide variety of value-added services [Wireless Access Protocol (WAP) over GPRS, e/m-banking, aft-commerce, push services, etc.] efficiently. However, in contemporary commercial implementations of GPRS the radio resource allocation algorithm does not take into account the Quality of Service (QoS)-related service characteristics-although such information is exchanged between the terminal and the network-and consequently all service requests are treated the same way (`best effort'). In this paper, we propose and evaluate via a simulation platform various Radio Resource Management (RRM) schemes capable of differentiating the handling of `service requests' (in uplink and downlink), taking into account the GPRS-related QoS parameters (precedence, reliability, delay, mean and peak throughput). The evaluation is performed for a range of voice (circuit-switched) traffic loads, number of Transmit Receive eXchange (TRXs), offered data (packet-switched) services characteristics, number of dedicated Packet Data Channels (PDCHs), and so on, taking into account the respective QoS requirements for both service types (circuit- and packet-switched). Copyright (C) 2003 John Wiley Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS INC	en
heal.journalName	WIRELESS COMMUNICATIONS & MOBILE COMPUTING	en
dc.identifier.isi	ISI:000183465600005	en
dc.identifier.volume	3	en
dc.identifier.issue	3	en
dc.identifier.spage	357	en
dc.identifier.epage	384	en