Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Autori: Gabriel Cristache, Klaus David, Matthias Hildebrand, José Díaz, Rolf Sigle
Editorial: 3rd Scandinavian Workshop on Wireless Ad-hoc Networks, Stockholm, May 6-7th 2003, 2003.
Ad-hoc networks are becoming more and more successful in the marketplace as indicated by the increasing usage of Bluetooth and W-LAN networks. This success is due to several reasons, including their lack of infrastructure requirements as well as their suitability for several application scenarios like the communication between laptops and/or handheld devices.
Despite all the successes so far and the promising future of ad-hoc networks, Internet connectivity will still be very important, and could quite likely be supported by cellular networks like GSM/GPRS or UMTS.
Another possibility is to use ad-hoc networks as an extension of the cellular air-interface, leading to improvements in cellular capacity and coverage. Due to the reduced coverage range of Bluetooth, WLAN seems to be better suited for this purpose, and hence, different interworking solutions between UMTS system and WLAN are presented in this paper.
Initially, current approaches, based on the coupling of WLAN access points into the UMTS infrastructure, are briefly introduced. However, the paper is mainly focused on the interworking of cellular and WLAN in ad-hoc mode, i.e. without using WLAN access points. The results show a good potential for cellular capacity increase based on ad-hoc extensions.
Cuvinte cheie: ad-hoc networks, cellular networks, mobile, wireless