Energy efficient cluster-based resource allocation and topology management for beyond next generation mobile broadband networks

In this paper, two novel energy efficient resource allocation schemes are proposed for beyond next generation mobile networks. The schemes take into account the clustering capability of base stations before assigning users to the base stations. A topology management scheme that adjusts the number of active base stations in accordance with the traffic load and also responds to QoS deterioration is combined with the schemes to improve energy efficiency over the network. The first scheme achieves up to 67% overall energy reduction at base stations for low traffic loads but has poor QoS performance at high traffic levels. The second scheme is better as it has the capability of maintaining a good balance between energy efficiency and QoS over a wide range of traffic loads. It also outperforms the best scheme in the literature in terms of provision of high throughput and tolerable delay at significantly higher effective energy saving percentages.