Is backhaul becoming a bottleneck for green wireless access networks?
2014 (English)In: 2014 IEEE International Conference on Communications, ICC 2014, IEEE , 2014, 4029-4035 p.Conference paper (Refereed)
Mobile operators are facing an exponential traffic growth due to the proliferation of portable devices that require a high-capacity connectivity. This, in turn, leads to a tremendous increase of the energy consumption of wireless access networks. A promising solution to this problem is the concept of heterogeneous networks, which is based on the dense deployment of low-cost and low-power base stations, in addition to the traditional macro cells. However, in such a scenario the energy consumed by the backhaul, which aggregates the traffic from each base station towards the metro/core segment, becomes significant and may limit the advantages of heterogeneous network deployments. This paper aims at assessing the impact of backhaul on the energy consumption of wireless access networks, taking into consideration different data traffic requirements (i.e., from todays to 2020 traffic levels). Three backhaul architectures combining different technologies (i.e., copper, fiber, and microwave) are considered. Results show that backhaul can amount to up to 50% of the power consumption of a wireless access network. On the other hand, hybrid backhaul architectures that combines fiber and microwave performs relatively well in scenarios where the wireless network is characterized by a high small-base-stations penetration rate.
Place, publisher, year, edition, pages
IEEE , 2014. 4029-4035 p.
Backhaul, Energy Efficiency, Fiber, Heterogeneous Networks, Microwave, Power Consumption, Smallcells, Traffic Model, VDSL2
Communication Systems Telecommunications
Research subject Information and Communication Technology
IdentifiersURN: urn:nbn:se:kth:diva-144905DOI: 10.1109/ICC.2014.6883951ScopusID: 2-s2.0-84907003394ISBN: 9781479920037OAI: oai:DiVA.org:kth-144905DiVA: diva2:715260
2014 1st IEEE International Conference on Communications, ICC 2014; Sydney, NSW; Australia; 10 June 2014 through 14 June 2014
QC 201506022014-05-022014-05-022015-06-02Bibliographically approved