UMTS, the mobile multimedia vision for IMT 2000: a focus on standardization

Abstract

Cellular mobile telecommunications and the World Wide Web are growing at an exciting pace. In the year 1999 both GSM and the Internet reached more than 200 million registered users globally. Thus, it may be expected that users will demand the combination of mobility and multimedia services in a foreseeable time frame. Multimedia content increases and differentiates with the changing information society, and an even richer variety of audio, visual, and text-based information will be required in the future. UMTS, the Universal Mobile Telecommunications System, a member of the IMT-2000 family of thirdgeneration systems, will provide these services. UMTS standardization has set a new paradigm of timely market-driven standardization in a global partnership of standardization bodies.

SMART: a synchronization scheme for providing multimedia quality in emerging wireless Internet

“…In our simulation, we use the delay parameters of UMTS (the Universal Mobile Telecommunications System), because it is the developing third generation system to provide global mobile seamless personalized multimedia communications and information services [2], and it is the system that converges the wireless services into the traditional wired networks, thereby the end-to-end delays in this system may be very large. In UMTS, the end-to-end transfer delay consists of three parts: the transfer delay of local bearer service, external bearer service, and UMTS bearer service, as shown in Fig.…”

Interworking of Wireless LANs and Cellular Networks

“…In contrast, current widely deployed cellular networks support a relatively low data rate. For example, the UMTS system can provide a data rate up to 2 Mbit/s for low-mobility applications (up to 10 km/h) [19]. There are also some enhancement technologies such as the high speed packet access (HSPA), which can promote the downlink packet rate up to 14 Mbit/s.…”

Multi-service load sharing for resource management in the cellular/WLAN integrated network

“…In contrast, the cellular networks have well entrenched infrastructure providing ubiquitous coverage, but relatively low data rates are supported with current widely deployed third-generation (3G) networks. For example, the UMTS system (Release 1999) can provide a data rate up to 2 Mbit/s for low-mobility applications (up to 10 km/hr) [10]. There are also some enhancement technologies such as the high speed packet access (HSPA), which can promote the downlink packet rate of UMTS access network up to 14 Mbit/s.…”

“…where R c d is the minimum cell bandwidth available to data traffic, and are given by (10) and (12), respectively. Last, a good tradeoff should be maintained between user-perceived QoS such as mean data response time and GoS in terms of call blocking probabilities.…”