Distributed Power On-Off Optimisation for Heterogeneous Networks: A comparison of autonomous and cooperative optimisation
2012 (English)Conference paper (Refereed)
The design of distributed algorithms and techniques allowing for an efficient utilisation of infrastructure in terms of energy consumption is one of the key challenges in heterogeneous networks. In this study the energy efficiency in the HetNet scenario is formulated as an optimisation problem and an iterative improvement algorithmic approach to power on-off of network cells is devised and evaluated. The algorithm builds on the simulated annealing search approach that executes in a distributed manner among network’s clusters. Four different variations of autonomous and cooperative optimisation are devised and the obtained network configuration solutions are compared to a baseline configuration scenario where all cells are powered on. The optimization search is guided by an objective function which is defined on outage throughput and energy efficiency. Simulation results show that the distributed cooperative algorithms perform better than the baseline in nearly all cases both in terms of outage throughput and energy efficiency. Furthermore, coordination among clusters has a strong impact on the speed and the performance of the obtained solutions.
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:kth:diva-184612OAI: oai:DiVA.org:kth-184612DiVA: diva2:916376
IEEE 17th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks, CAMAD 2012
QS 20162016-04-012016-04-012016-04-05Bibliographically approved