Preface

Abstract

This issue of JTIT is devoted to three areas: routing and other subjects related to communication networks, security issues and solutions, and radio technology. The largest part of the publication is networking, especially mobile networks – reflecting their steady technical development and worldwide expansion, and to routing solutions – in a technology-neutral manner, as the problems and their solutions presented are independent of transmission medium being used.
As the ultimate purpose of a communication network is cost-efficient provision of services meeting contractual quality requirements, there is a need for traffic engineering ensuring effective utilization of available network resources and generation of highest income for network operator, while still providing the Quality of Service (QoS) expected by its customers. Importantly, pursuing those two goals simultaneously is often in conflict. Another big issue is monitoring the QoS received by customers, e.g. for use by market regulator or service provider. The latter is particularly important in case of mass-market Internet access offered for consumers and small business users, who usually lack the knowledge and tools necessary to monitor service quality themselves. (...)