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Reduction of Outage Probability due to Handover by Mitigating Inter-cell Interference in Long-Term Evolution Networks

  • Hussein, Yaseein Soubhi (Department of Computer and Communication Engineering, Faculty of Engineering, Universiti Putra Malaysia, Department of Electrical Engineering, University of Baghdad) ;
  • Ali, Borhanuddin Mohd (Department of Computer and Communication Engineering, Faculty of Engineering, WiPNET Research Centre, Universiti Putra Malaysia) ;
  • Rasid, Mohd Fadlee A. (Department of Computer and Communication Engineering, Faculty of Engineering, WiPNET Research Centre, Universiti Putra Malaysia) ;
  • Sali, Aduwati (Department of Computer and Communication Engineering, Faculty of Engineering, WiPNET Research Centre, Universiti Putra Malaysia)
  • Received : 2013.09.24
  • Accepted : 2013.11.21
  • Published : 2014.08.01
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Abstract

The burgeoning growth of real-time applications, such as interactive video and VoIP, places a heavy demand for a high data rate and guarantee of QoS from a network. This is being addressed by fourth generation networks such as Long-Term Evolution (LTE). But, the mobility of user equipment that needs to be handed over to a new evolved node base-station (eNB) while maintaining connectivity with high data rates poses a significant challenge that needs to be addressed. Handover (HO) normally takes place at cell borders, which normally suffers high interference. This inter-cell interference (ICI) can affect HO procedures, as well as reduce throughput. In this paper, soft frequency reuse (SFR) and multiple preparations (MP), so-called SFRAMP, are proposed to provide a seamless and fast handover with high throughput by keeping the ICI low. Simulation results using LTE-Sim show that the outage probability and delay are reduced by 24.4% and 11.9%, respectively, over the hard handover method - quite a significant result.

Keywords

References

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