Admission Control and Resource Allocation for Distributed Services in System-of-Systems: Challenges and Potential Solutions

System-of-Systems (SoS) are a paradigm that has been proposed to cope with the evolving new services in large scale systems that not only need extensive computing resources, but also may have extra-functional properties like stringent time requirements. In SoS, a complex task is typically divided into sub-tasks that have a lower complexity and can be performed by multiple distributed systems working independently from each other. However, the coordination between these systems is of paramount importance to achieve the required compound complex task. Admission control and resource allocation are two essential mechanisms needed to coordinate the distributed tasks among the systems. However, performing admission control and resource allocation in such distributed systems is challenging, because of the distributed nature of SoS. In this paper, the proposed SoS system architecture is described, then the process of admission control and resource allocation is discussed, while highlighting the potential challenges associated with this process and its solutions.