A kriging approach to predicting coverage in wireless networks
This paper introduces kriging as a new tool to predict network coverage in wireless networks. The proposed approach aims to reduce the cost of active site surveys by estimating network coverage at points where no site survey data is available. The ...
Efficient resource allocation in OFDMA cellular wireless networks to support multimedia traffic in downlink
Orthogonal frequency division multiple access (OFDMA) is a promising technique for achieving high capacities in future cellular systems to support multimedia traffic. The OFDMA technique not only allows maximum resource utilisation, but also a very ...
Pay per view – a multimedia multicast application with effective key management
Multicast communications seem particularly well adapted for large scale commercial distribution applications, such as pay per view systems. Successful implementation of pay per view systems is underway in many countries, and as a result, many cable ...
Evolving core networks from GSM to UMTS R4 version
More than 217 UMTS licenses have been issued by June 2007. Mobile operators, especially those with GSM legacy networks, prefer UMTS R4 technique to evolve their existing 2G GSM networks. UMTS R4 technique provides a smooth path to bridge legacy TDM-...
Impact of vehicle movement models on VDTN routing strategies for rural connectivity
Vehicular delay-tolerant networks (VDTNs) appear as an alternative to provide low cost asynchronous internet access on developing countries or isolated regions, enabling non-real time services, such as e-mail, web access, telemedicine, environmental ...
Distributed opportunistic communication protocol for wireless multihop networks
Despite significant research effort, the performance of distributed medium access control methods has failed to meet theoretical expectations. Previously, we have proposed the concept for a fully-distributed, but non-optimum opportunistic medium access ...
