Over the last two decades, the telecommunication industry has witnessed sustained growth in the number of mobile user devices driven by the introduction of data services, the take-off of the internet and smart user equipment.
This growth, which is forecasted to continue, has continued to push the data transfer capacity requirement on mobile networks and has motivated research into the design of 5th generation (5G) mobile networks. A key concern in the design of 5G is the infrastructure and power consumption cost of the base station network which is expected to be significantly more advanced and denser than of existing conventional mobile networks. This research has produced an optimisation framework for the cost efficient design of 5G base station networks, based on the application of meta-heuristic algorithms.
The optimisation framework is centred on the ability to exploit three key technologies of 5G, a heterogonous base station network with small-cells, multi-antenna spatial multiplexing MIMO and cell range extension. The framework includes mathematical integer programming models for supporting the decisions about the optimal base station topology in a 5G mobile network and provides a clear core for the application of meta-heuristics for optimising 5G base station deployment. The core optimisation framework includes the definition of solution encoding/decoding and fitness mechanisms. To increase power consumption awareness of base station network design, an independent base station deployment strategy has been presented and evaluated. Simulation results show that the strategy can improve base station network design power consumption by as much as 34%.
Figure 1: Optimal Cell plan result of scenario ‘A’ (1x1). In this scenario all base stations are deployed with single antenna, consequently an increase base station density is deployed to provide the required capacity.
Figure 2: Optimal Cell plan result of proposed model. (The MIMO setup per base station is not fixed homogenously but optimized). It can be seen that in contrast to Figure 4, the MIMO set up per base station different. For example, some base stations use a 3x3 configurations others are deployed with 1x1 and 2x2 configurations. A visual decrease in the number of sites can also be clearly observed.
Aondoakaa, D., Cosmas, J. and Swift, S. (2018) ‘Exploiting Heterogeneity For Cost Efficient Cellular Base Station Deployment Using Metaheuristics’, in 482nd International Conference on Communication and Signal Processing (ICCSP). Dubai, UAE. [Awarded Best Paper certificate]
Aondoakaa, D., Cosmas, J. and Swift, S. (2018) ‘Exploiting Heterogeneity For Cost Efficient Cellular Base Station Deployment Using Metaheuristics’, International Journal of Advances in Electronics and Computer Sciences (IJAES), 5(10).
David Tyona Aondoakaa, John Paul Cosmas, Stephen Swift “EXPLOITING HETEROGENEITY FOR COST EFFICIENT 5G BASE STATION DEPLOYMENT USING METAHEURISTICS” IET Networks, Manuscript ID: NET-2019-0111, 23rd July 2019
D. Aondoakaa, J. Cosmas and S. Swift “Energy-Aware Network Planning Strategy for 5G Heterogeneous Networks” submitted to the IEEE Networking Letters, April 2020.