Interoperability criteria, mechanisms, and evaluation of system performance for transparently interoperating WLAN and UMTS-HSDPA networks

Al-Gizawi, T; Peppas, K; Axiotis, DI; Protonotarios, EN; Lazarakis, F

dc.contributor.author	Al-Gizawi, T	en
dc.contributor.author	Peppas, K	en
dc.contributor.author	Axiotis, DI	en
dc.contributor.author	Protonotarios, EN	en
dc.contributor.author	Lazarakis, F	en
dc.date.accessioned	2014-03-01T01:22:31Z
dc.date.available	2014-03-01T01:22:31Z
dc.date.issued	2005	en
dc.identifier.issn	0890-8044	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16607
dc.subject	Cost Function	en
dc.subject	System Performance	en
dc.subject	Wireless Communication Systems	en
dc.subject	Mobile Terminal	en
dc.subject	Radio Access Network	en
dc.subject	Radio Access Technology	en
dc.subject.classification	Computer Science, Hardware & Architecture	en
dc.subject.classification	Computer Science, Information Systems	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Algorithms	en
dc.subject.other	Bandwidth	en
dc.subject.other	Computer simulation	en
dc.subject.other	Interoperability	en
dc.subject.other	Local area networks	en
dc.subject.other	Mobile telecommunication systems	en
dc.subject.other	Optimization	en
dc.subject.other	Performance	en
dc.subject.other	Quality of service	en
dc.subject.other	Radio links	en
dc.subject.other	High speed downlink packet access networks	en
dc.subject.other	Universal mobile telecommunication system	en
dc.subject.other	Wireless LAN	en
dc.subject.other	Wireless telecommunication systems	en
dc.title	Interoperability criteria, mechanisms, and evaluation of system performance for transparently interoperating WLAN and UMTS-HSDPA networks	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/MNET.2005.1470685	en
heal.identifier.secondary	http://dx.doi.org/10.1109/MNET.2005.1470685	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The main challenge in the development of future wireless communication systems is to provide users with a wide range of services across different radio access technologies through a single mobile terminal, while maintaining the minimum QoS requirements, and ideally with no limits on the coverage area, mobility or radio conditions. Thus, the need for seamless interworking between heterogeneous wireless communication systems consisting of multiple radio access technologies and overlapping networks emerges. In this article we address the main issues that arise while implementing the interoperability mechanisms between two different radio access networks, with emphasis on UMTS-HSDPA and WLAN (HIPERLAN/2). Two interoperability mechanisms are introduced and described in detail: initial user assignment (optimal network selection) and intersystem handover. Both mechanisms are activated via the optimization of a suitably defined cost function which takes into account all the appropriate system level parameters that trigger the interoperability process. Finally, we investigate the overall performance of the proposed mechanisms by means of a software simulation platform. A number of simulations have been carried out in order to demonstrate the performance enhancements achieved by the proposed mechanisms in terms of unsatisfied users, dropped handovers, and system throughput. © 2005 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Network	en
dc.identifier.doi	10.1109/MNET.2005.1470685	en
dc.identifier.isi	ISI:000230543500011	en
dc.identifier.volume	19	en
dc.identifier.issue	4	en
dc.identifier.spage	66	en
dc.identifier.epage	72	en