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Toward Distributed Robust Power Allocation of Wireless Backhaul Links in Vehicular Small Cells

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Abstract

The vehicular small cell (VSC) is a new paradigm that has been recently proposed to be a potential technology for 5G cellular systems. Briefly, VSC concept lies in using the small cell technology inside vehicles such as buses and private cars to provide better coverage and good internet experience while on the move where the wireless backhaul link is inevitable. However, in order to increase the spectral efficiency, co-channel deployment of VSCs on the wireless backhaul link is preferred. Thus, managing the variable interference on the wireless backhaul and its power allocation requirement seem to be serious challenges in implementing the VSCs. Motivated by the simplicity and practically of the power allocation based on pilot power and received signal strength index (RSSI) information, this paper proposes an evolutionary approach and robust to the interference fluctuations in which, taking the limited dynamic range of transmitted power using linear mapping into account, the signal to interference plus noise ratio (SINR) balancing of the vehicular small base stations in their home macro base station and maximum capacity on the backhaul link are achieved at the cost of exchanging some power level information among both macro and small base stations. Finally, simulation results prove aforementioned potential advantages attained from the presented schemes.

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Correspondence to Sajjad Alizadeh.

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Alizadeh, S., Saadat, R. Toward Distributed Robust Power Allocation of Wireless Backhaul Links in Vehicular Small Cells. Wireless Pers Commun 95, 3857–3882 (2017). https://doi.org/10.1007/s11277-017-4029-2

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Keywords

  • Vehicular small cells
  • Wireless backhaul links
  • Pilot power
  • RSSI
  • Communication overhead