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DTIA (DynamicTopological Information Architecture), an inter-domain routing architecture, assumed the existence of "regions of domains" to offer a scalable solution for the Internet. The way regions can be connected and how traffic flow amongst them is not a trivial aspect and can jeopardize the solution proposed for intra-region traffic. This paper covers the inter-region case showing that it can be performed by using a smaller set of valid paths than for the intra-region case in the source region, but still featuring multipath to the destination and taking advantage of multi-homing. The routing is based on a monotone algebra to converge without the need to change the IP headers or introduce additional signaling or state in the network. The overall system complies with the current business model of the Internet, and it also features one tendency that has been increasingly used: the fact that Autonomous Systems (ASes) are each time more connected with direct (or semi-direct) links instead of in a pure hierarchical structure up to tier-1 ASes.

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Current wireless communication systems rely on the assumptions of the Nyquist theorem. Faster-Than-Nyquist (FTN) assumes that a bandwidth below the Nyquist bandwidth can be used with minimum loss, however the existing receivers are too complex. Single Carrier with Frequency-Domain Equalization (SC-FDE) has been proposed to handle multipath dispersive broadband channels, however the uplink of SC-FDE can be severely affected by deep-fades and/or poor channel conditions. To cope with such difficulties Diversity Combining (DC) Hybrid ARQ is a viable technique, since it combines the several packet copies sent by a Mobile Terminal to create reliable packet symbols at the receiver. This paper proposes a simple SC-FDE Packet Error Rate analytical model using FTN signaling, based on the Iterative Block with Decision Feedback Equalization technique, which achieves a performance similar to Nyquist signaling.