A Framework for Dynamic Network Architecture and Topology Optimization

Abstract

Abstract-A new paradigm in wireless network access is presented and analyzed. In this concept, certain classes of wireless terminals can be turned temporarily into an access point (AP) anytime while connected to the Internet. This creates a dynamic network architecture (DNA) since the number and location of these APs vary in time. In this paper, we present a framework to optimize different aspects of this architecture. First, the dynamic AP association problem is addressed with the aim to optimize the network by choosing the most convenient APs to provide the quality-of-service (QoS) levels demanded by the users with the minimum cost. Then, an economic model is developed to compensate the users for serving as APs and, thus, augmenting the network resources. The users' security investment is also taken into account in the AP selection. A preclustering process of the DNA is proposed to keep the optimization process feasible in a high dense network. To dynamically reconfigure the optimum topology and adjust it to the traffic variations, a new specific encoding of genetic algorithm (GA) is presented. Numerical results show that GA can provide the optimum topology up to two orders of magnitude faster than exhaustive search for network clusters, and the improvement significantly increases with the cluster size.

User-Centric Spectrum Sharing in Dynamic Network Architecture

“…We consider a DNA network [3] assuming N wireless network operators using J static/dynamic access points to serve K end users, where N , J and K are the lists of NOs (Network Operators), APs (Access points) and EUs (End Users) respectively. Each NO serves two different types of users depending on its coverage range, normal users (NUs) and end users (EUs) which are in and out of coverage respectively.…”

“…Dynamic network architecture (DNA)/user provided network (UPN) paradigm [1], [2], [3] introduces a low-cost ubiquitous Internet connectivity for both in coverage and out of coverage users without need for additional infrastructure. For this reason, UPN/DNA has been recently introduced by 3GPP as a complementary communication and network scheme [4].…”

“…DNA enables users of mobile virtual network operators (MVNOs) to share their unused resources e.g. bandwidth with other users [1], [3] especially once users are out of coverage. End user (EU) becomes a resource provider by acting as access point (AP)/relay and sharing temporally unused resources according to the offered incentives by NOs [5], [6].…”

“…In [3], we proposed DNA as a new networking model, where network operators can motivate their users to act as access points. In this paper, DNA as a new dynamic spectrum sharing model is proposed to improve the flexibility, the adaptability, and the efficiency of wireless communication systems for both in coverage and out of coverage EUs.…”

Dynamic Network Slicing for Flexible Radio Access in Tactile Internet

“…This flexible cloud radio network (FRAN) for Tactile Internet (TI) adaptively uses user-provided networks [10] to provide an efficient framework for ultra low-latency communications. In user-provided networks, users share their connectivity and act as access points for other users and so increase the network capacity.…”