Power Control and Soft Topology Adaptations in Multihop Cellular Networks With Multi-Point Connectivity - 2015


The LTE standards account for the use of relays to enhance coverage close to the cell edge. In a ancient topology, a mobile can either establish an instantaneous link to the base station (BS) or a link to the relay, however not both. In this paper, we think about the advantage of multipoint connectivity in allowing user equipment (UEs) to split their transmit power over simultaneous links to the BS and the relay, in result transmitting 2 parallel flows. We tend to model selections by the UEs as to: (i) that point of access to attach to (either a relay or a relay and the BS or only the BS); and (ii) a way to allocate transmit power over these links so as to maximize their total rate. We show that this flexibility in the choice of points of access leads to substantial network capacity increase against when nodes operate during a fastened network topology. Individual diversifications by UEs, in terms of each purpose of access and transmit power, are interdependent due to interference and to the likelihood of over-loading of the backhaul links. We have a tendency to show that these choices can converge without any express cooperation and derive a closed-kind expression for the transmit power levels.

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