This dissertation addresses the problem of channel assignment in multi-hop, multi-transceiver wireless networks. We investigate (1) how channels can be assigned throughout the network to ensure that the network is connected and (2) how the channel assignment can be adapted to suit the current traffic demands. We analyze a traffic-aware method for channel assignment that addresses both maintaining network connectivity and adapting the topology based on dynamic traffic demands. The traffic-aware approach has one component that assigns channels independently of traffic conditions and a second component that assigns channels in response to traffic conditions. The traffic-independent (TI) component is designed to allocate as few transceivers or radios as possible in order to maintain network connectivity, while limiting the aggregate interference induced by the topology. The traffic-driven (TD) component is then designed to maximize end-to-end flow rate using the resources remaining after the TI assignment is complete. By minimizing resources in the TI component, the TD component has more resources to adapt the topology to suit the traffic demands and support higher end-to-end flow rate. We investigate the fundamental tradeoff between how many resources are allocated to maintaining network connectivity versus how many resources are allocated to maximize flow rate. We show that the traffic-aware approach achieves an appropriately balanced resource allocation, maintaining a baseline network connectivity and adapting to achieve near the maximum theoretical flow rate in the scenarios evaluated. We develop a set of greedy, heuristic algorithms that address the problem of resource- minimized TI assignment, the first component of the traffic-aware assignment. We develop centralized and distributed schemes for nodes to assign channels to their transceivers. These schemes perform well as compared to the optimal approach in the evaluation. We show that both of these schemes perform within 2% of the optimum in terms of the maximum achievable flow rate. We develop a set of techniques for adapting the network's channel assignment based on traffic demands, the second component of the traffic-aware assignment. In our approach, nodes sense traffic conditions and adapt their own channel assignment independently to support a high flow rate and adapt when network demand changes. We demonstrate how our distributed TI and TD approaches complement each other in an event-driven simulation. / Ph. D.

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In a time of pervasive digitalization, technology is constantly reshaping contemporary society. Because digital product architecture allows for unprecedented flexibility in terms of design, production, distribution and use, significant shifts are seen in how firms organize to create value. As disruptive technologies enable novel ways of operating in the media industry, new actors are entering the stage, capitalizing on the affordances associated with digitalization of content. Established in 2013, multi-channel network United Screens build a business around online video creators posting original material to social media platforms such as YouTube, helping them with anything from audience growth to rights management. Connecting content creators with brands looking to market themselves through online video, United Screens provide an illustrative example of how relative positions of new and established actors are changing as an effect of digitalization. Because little research has previously been directed at multi-channel networks, this study set out to explore how United Screens organize themselves and their partnerships to create value in the digital media landscape. By interviewing employees and partners of the company, themes covering roles, offerings, affiliation and control were identified and subsequently discussed in relation to previous knowledge of business logic and digital product architecture. The study provides an empirical illustration of how digitalization enables new ways of creating value, and how this affects organizational arrangements. Concluding that more research is required in the field, the study serves as a starting point for theory generation concerning emergent actors and their organizing logic following pervasive digitalization.