The Enhanced UMTS Radio Access Network Extensions (EURANE) provided UMTS and HSDPA support in the Network Simulator (NS-2). The main components of EURANE include the Radio Link Control (RLC) layer with the Acknowledged and Unacknowledged Modes, MAC layer for the main UMTS and HSDPA transport channels and a physical-layer simulation tool for simulating the fast channel variations in HSDPA. Altho...

The German UMTS-Auction in August 2000 attracted, like similar auctions in Great Britain and The Netherlands earlier in the year 2000, a lot of public attention and money. At this auction 4 to 6 licenses to offer third generation cell-phone service in Germany were on the block to be sold, raising a total revenue of 98,8072 BDM. The publicity surrounding the auction is as good an excuse as any t...

In this paper, we present the design and the implementation of a novel scheme for the multicast transmission of data over Universal Mobile Telecommunications System (UMTS) networks. The proposed scheme is implemented as an ns-2 network simulator module which can be employed to investigate various aspects of UMTS multicast. Apart from the normal multicast transmission over UMTS, we consider the ...

The analysis of radio resource management (RRM) strategies in a UMTS network and the impact that these strategies have on the end-to-end behaviour of multimedia applications with Quality of Service (QoS) requirements is one of the topical communication fields. Within the IST ARROWS (Advanced Radio Resource Management On Wireless Services) project a real-time UMTS demonstrator is being developed...

The framework for a unified QoS support mechanism for IP traffic over UMTS and Wireless LANs is discussed. The work addresses the potential issues that emerge when using UMTS and WLANs as access systems to an IP core and focuses on defining a consistent mechanism that will support QoS and resource reservation in a unified. The proposed approach utilizes the RSVP for negotiating QoS parameters a...

Cellular networks, e.g. UMTS, provide voice and data services to mobile users. In hot spots where users need high speed data services operators can deploy low-cost high-speed WLANs, e.g. 802.11, to cover hot-spots. This paper proposes a possible architecture of integrating UMTS and 802.11 WLAN. The architecture allows a mobile node to maintain data (PS) connection through WLAN and voice (CS) co...

With an ever increasing penetration of IP technologies and the tremendous growth in wireless data traffic, the wireless industry is evolving the mobile core networks towards IP technology. The third Generation Partnership Project (3GPP) has specified an IP multimedia sub-system (IMS) in UMTS Release 5/6, which is adjunct to the UMTS packet-switched (PS) GPRS core network. This IP-based network ...

Mobile communication is definitely one of the major high-technology applications that offer present-day people a modern life of appropriate convenience. In recent years, the third generation cell-phone system has approached maturity. The Universal Mobile Telecommunication System (UMTS) is currently the most widely used system around the world. The 3rd Generation Partnership Project is equipped ...