Low-delay cost-aware multipath scheduling over dynamic links for access traffic steering, switching, and splitting

Bundling of multiple access technologies is currently being standardized by 3GPP in the 5G access traffic steering, switching and splitting (ATSSS) framework, with the goal to increase robustness, resiliency and capacity of wireless access. A key part of an ATSSS framework is the packet scheduler, which decides the access network over which each packet is to be transmitted. As wireless channels are highly dynamic, a challenge for any scheduler is to correctly estimate the capacity of each path, and thereby avoid congesting the paths. In this paper, we further develop a recent packet scheduler that exploits cross-layer information from the congestion control state of individual transport layer tunnels when making scheduling decisions. Our aim is to achieve good path utilization while keeping the congestion delay low. Extensive emulations show that our approach reduces the excess delay at the bottleneck to as little as 34%. We furthermore show that our approach improves the performance of end-to-end applications including WebRTC and YouTube compared to state-of-the art.

Collaborative cognitive RRM, Dynamic Spectrum Management, and self-organisation for future mobile networks

Forced by an enormous cost pressure, investments into future radio network infrastructure as well as operational costs have to be minimised. More efficient and highly flexible use of scarce radio resources is mandatory without compromising high network performance and users' service quality perception. This paper highlights the means to achieve this, in particular, the algorithms, results and recommendations for Joint Radio Resource Management (JRRM), Dynamic Spectrum Management (DSM) and Self-organising Networks (SON) mechanisms

Fixed and Mobile Convergence: Needs and Solutions

The drivers of Fixed and Mobile Convergence (FMC) are discussed. A reference framework for FMC proposed by European project COMBO is then presented. Some use cases of FMC are described, showing the needs for mutualization and convergence of fixed and mobile broadband networks. Five network scenarios providing technical solutions to FMC use cases are proposed. They target an optimal and seamless quality of experience for the end user together with an optimized network infrastructure ensuring increased performance, flexibility, reduced cost and reduced energy consumption