Combined green resource and topology management for beyond next generation mobile broadband systems

This paper introduces a green topology management scheme which aims to reduce energy consumption by switching off as many underutilised base stations as possible in beyond next generation mobile broadband networks. Strategies are proposed which activate or deactivate base stations according to local traffic conditions to find a trade-off between energy savings and system QoS. In addition, different green channel assignment schemes are introduced in order to further increase energy savings when used with the green topology management scheme. It is shown that topology management is able to significantly reduce energy consumption at low and medium traffic levels. These savings increase further by an additional average of 15% at all traffic levels when combined with the proposed green channel assignment schemes.