Browse Conferences
Spatial channel characterisation of FDD wireless links
For smart antenna deployments in frequency division duplex (FDD) applications the downlink weight vector can be derived from the uplink steering vector. However, this assumes a degree of correlation between these channels. It is shown here ...
Dynamic pricing in cellular networks, a mobility model with a provider-oriented approach
The success of i-mode in Japan and the slow but, nevertheless, steady uptake of WAP in the UK and elsewhere indicate a healthy growth in demand for mobile data services. This rapid growth in coupled to the limited bandwidth to the air inter...
Capacity of an integrated LCD/UDD WCDMA cellular network
Analytical characterisation of low constraint delay (LCD) traffic on the uplink in a WCDMA cellular network is a well-understood procedure. However, integration of UDD traffic into existing models is not immediately obvious. For example, a ...
Dynamic spectrum allocation in a multi-radio environment: concept and algorithm
This paper discusses the concepts of dynamic spectrum allocation (DSA) as an alternative to fixed allocation schemes. The paper investigates a scenario where a block of spectrum is shared between a unicast system, such as terrestrial UMTS (...
Designing a diffserv-capable IP-backbone for the UTRAN
Due the growing popularity and availability of IP-devices and IP-transport, and given the evolving standardisation, it is clear that IP-transport will be one of the transport mechanisms in the UMTS Terrestrial Radio Access Network (UTRAN). ...
Its services in Wales using the Wireless Application Protocol (WAP)
This paper describes the UK site of the ITSWAP project which is developing ITS services using the Wireless Application Protocol (WAP). The site is situated in Wales and includes several key features aimed at improving travel using the poten...
Services via mobility portals
This paper examines the importance of mobility portal services and the technologies that will be essential in delivering content over next generation network technologies. Finally, proposed developments are discussed which will extend the f...
Modified WAP for secure voice and video communication
It is essential for future mobile communication systems to support different media types such as audio, video. There is also an increasing need to preserve the confidentiality, data integrity, and authenticity of these media to prevent frau...
CRUMPET: creation of user-friendly mobile services personalised for tourism
More and more people combine several purposes with travelling, such as business, leisure, entertainment, and education. Such people may not have time to pre-plan a travel schedule in detail. They need location-aware information about the de...
Towards a coherent approach to third generation system security
This paper provides an overview of a systematic approach to the definition of 3G security features. This is followed by a review of the disparate security technologies that may be employed in 3G systems. Some properties of a coherent 3G sys...