There have been parallel technological developments in wireless local network (WLAN) and cellular wide area network (WAN) technologies. This is evidenced by the boom in fast WLANs enabled devices, the spread of 2.5 G networks and the increasing emergence 3 G communication networks, applications and terminals. The prospects of integrating WLAN and cellular WAN technologies with support for seamless handoffs between the two heterogeneous have changed the mentality of researchers from considering WLAN technology as a threat to the future of wide area cellular networks to accepting the technology as a complementary solution. A number of architectures for interworking the two different network types have been proposed mainly based on the loose coupling interworking approach recommended by the ETSI. One of the main weaknesses anticipated with loose coupling architecture is excessive handoff latency, which may lead to data loss, traffic congestion and handoff failure. In this paper an architecture for interworking WLAN and the GPRS networks, based on the ETSI tight coupling approach, is proposed.
[1]
Sajal K. Das,et al.
IDMP-based fast handoffs and paging in IP-based 4G mobile networks
,
2002,
IEEE Commun. Mag..
[2]
Vijay K. Garg,et al.
Principles and applications of GSM
,
1999
.
[3]
Seung-Jae Han,et al.
Integration of 802.11 and third-generation wireless data networks
,
2003,
IEEE INFOCOM 2003. Twenty-second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37428).
[4]
Ralf Keller,et al.
Ericsson Mobile Operator WLAN solution
,
2002
.
[5]
Apostolis K. Salkintzis,et al.
WLAN-GPRS integration for next-generation mobile data networks
,
2002,
IEEE Wirel. Commun..