During development of the UMTS security standard, 3GPP had to take various constraining aspects, like bandwidth and limited hardware, into account, so there were compromises made in security. One such compromise is the absence of a full userdata integrity protection mechanism. In this paper an approach is made to a full user data integrity protection mechanism in the UMTS access network. The cu...

UMTS is one step ahead from the 2.5G network GPRS and supports faster data rates with wide coverage area. GPRS and UMTS are already deployed in many countries but seamless handover between GPRS and UMTS still remains as a stumbling block for the service providers to fulfill the continuously increasing customer demand for internet and data access in the IP-based wireless network and to maintain ...

Universal Mobile Telecommunication System shortly UMTS is seen as the future mobile network. The use of the existing Transmission control protocol (TCP) as transport protocol in an UMTS environment is an understandable choice. TCP is the most commonly used transport protocol on the internet, and if it will be used as transport protocol in an UMTS environment, the UMTS devices will be compatible...

This document specifies an Extensible Authentication Protocol (EAP) mechanism for authentication and session key distribution using the Universal Mobile Telecommunications System (UMTS) Authentication and Key Agreement (AKA) mechanism. UMTS AKA is based on symmetric keys, and runs typically in a UMTS Subscriber Identity Module, a smart card like device. EAP AKA includes optional identity privac...

This document specifies an Extensible Authentication Protocol (EAP) mechanism for authentication and session key distribution using the Universal Mobile Telecommunications System (UMTS) Authentication and Key Agreement (AKA) mechanism. UMTS AKA is based on symmetric keys, and runs typically in a UMTS Subscriber Identity Module, a smart card like device. EAP AKA includes optional identity privac...

A distinguishing feature of the Universal Mobile Telecommunications System (UMTS) is the support of different levels of quality of service (QoS) as required by subscribers and their applications. To provide QoS, the UMTS backbone network needs an efficient QoS mechanism to provide the demanded level of services on a UMTS core network. This paper presents a methodology of provisioning QoS in thi...

UMTS-Netze werden parallel zum GSM-NSS (Network Subsystem) eingeführt. Bei den Kernnetzen spricht man hier von Architekturen der nächsten Generation (Next Generation Networks, oder kurz NGN). Das Prinzip der NGN-Architektur ist die Trennung der Steuerungsschicht (Call Control) von der Transportschicht. Ein solches Kernnetz enthält kein MSC (Mobile Switching Centre) mehr. Die MSC-Funktionalität ...

Over the past several years, mobile/wireless communications have evolved and proliferated a variety of technologies. Among those technologies, we focus on UMTS and Bluetooth because of their prominent and complementary features. While UMTS provides “universal connectivity,” Bluetooth will be the most promising candidate technology to provide “ubiquitous connectivity.” In this paper, we advocate...

The Universal Mobile Telecommunications System (UMTS) constitutes the premier third generation (3G) wireless technology that is dominating the global market. Multicasting is an efficient method of supporting group communication as it allows the transmission of packets to multiple destinations, using fewer network resources. The need for broadcasting and multicasting in UMTS led to the definitio...

In this paper a scheduling mechanism is provided within a proposed UMTS access network architecture, employed to perform a QoS experiment. W-CDMA is the strongest candidate for the air interface technology of UMTS which will comprise both a terrestrial part (T-UMTS) and a satellite part (S-UMTS). Dynamic Resource Scheduling (DRS) is proposed as a framework that will provide QoS provisioning for...