Energy-Efficient Bandwidth and Power Allocation for Multi-Homing Networks


This paper investigates resource allocation for multi-homing networks where users will simultaneously transmit information to multiple radio access networks (RANs) using multiple air interfaces. We aim at optimally assigning the bandwidth and power to each user-RAN association thus as to maximize energy-efficiency of the entire network subject to user specific QoS needs yet as the obtainable resource budgets. Initial, we study the problem of resource allocation for situations where the connections between the users and also the RANs are predefined, that naturally leads to a fractional program. To obtain the optimal answer efficiently and facilitate distributed implementations, we additional equivalently remodel the design downside into a convex program using a parameter-free approach and develop a decentralized algorithm primarily based on the alternating direction methodology of multipliers. Second, we investigate the matter of joint link choice and resource allocation for energy-efficiency maximization. The problem is forged as a mixed integer nonlinear convex program for that we particularize the branch and bound method to seek out an optimal resolution. Then, two suboptimal low-complexity styles are proposed: the primary one is predicated on greedy algorithm, that gradually maximizes the virtual link energy-potency; the opposite one is based on the concept of sparsity-inducing norm. Simulation results are presented to demonstrate the potential gains in terms of energy-efficiency of the proposed ways.

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