The Internet architecture and protocols have a general inadequacy for mobile wireless devices. In addition, there are similar problems in offering services with specific and differentiated QoS requirements. Drastic changes in the Internet architecture and mechanisms will therefore be required. From a quantified QoS viewpoint future network generations will require capabilities to deal with a dynamic environment where path characteristics, availability, reliability, resources, trust, and security threats change dynamically as the user or devices move or utilize different link level technologies.

Hence Q2S address the following research challanges

• New methods for dependability differentiation
• Dependability, information security and resource allocation seen as a whole
• Quantifiable aspects of information security
• Congestion and admission control by stochastic network calculus, rate control and other QoS mechanisms

A set of Projects addressing challenges of Q2S mechanisms for dynamic networks have been initiated.