Greenly offloading traffic in stochastic heterogeneous cellular networks

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1 Citation (Scopus)

Abstract

This paper puts forwards an on-line reinforcement learning framework for the problem of traf?c of?oading in a stochastic Markovian heterogeneous cellular network (HCN), where the time-varying traf?c demand of mobile terminals (MTs) can be of?oaded from macrocells to small-cells. Our aim is to minimize the average energy consumption of the HCN while maintaining the Quality-of-Service (QoS) experienced by MTs. For each cell (i.e., a macrocell or a small-cell), the energy consumption is determined by its system load which is coupled with the system loads served in other cells due to the sharing over a common frequency band. We model the energy-aware traf?c of?oading in such HCNs as a constrained Markov decision process (C-MDP). The statistics of the C-MDP depends on a selected traf?c of?oading strategy and thus, the actions performed by a network controller have a long-term impact on the network state evolution. Based on the traf?c demand observations and the traf?c of?oading operations, the controller gradually optimizes the strategy with no prior knowledge of the process statistics. Numerical experiments are conducted to show the effectiveness of the proposed learning framework in balancing the tradeoff between energy saving and QoS satisfaction
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publication1st International Workshop on Cognitive Cellular Systems, CCS 2014
PublisherIEEE Institute of Electrical and Electronic Engineers
Number of pages5
ISBN (Electronic)978-1-4799-4139-1
DOIs
Publication statusPublished - 2014
MoE publication typeA4 Article in a conference publication
EventIEEE International Workshop on Cognitive Cellular Systems CCS 2014 - Rhine River, Germany
Duration: 2 Sep 20144 Sep 2014

Conference

ConferenceIEEE International Workshop on Cognitive Cellular Systems CCS 2014
Abbreviated titleCCS 2014
CountryGermany
CityRhine River
Period2/09/144/09/14

Keywords

  • energy consumption
  • macrocell networks
  • scattering
  • quality of service
  • telecommunication traffic
  • interference
  • switches

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  • Cite this

    Chen, X., Chen, T., Wu, S., & Lasanen, M. (2014). Greenly offloading traffic in stochastic heterogeneous cellular networks. In Proceedings: 1st International Workshop on Cognitive Cellular Systems, CCS 2014 IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/CCS.2014.6933789