download:Handover Adaptation for Dynamic Load Balancing in 3GPP Long Term Evolution S

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Handover Adaptation for Dynamic Load Balancing in 3GPP
Long Term Evolution Systems

The long-Term Evolution (LTE) of the 3GPP (3rd Generation Partnership Project) radio access
network is in early stage of specification. Self-tuning and self-optimisation algorithms are currently
studied with the aim of enriching the LTE standard. This paper investigates auto-tuning of LTE
mobility algorithm. The auto-tuning is carried out by adapting handover parameters of each base
station according to its radio load and the load of its adjacent cells. The auto-tuning alleviates cell
congestion and balances the traffic and the load between cells by handing off mobiles close to the
cell border from the congested cell to its neighbouring cells. Simulation results show that the autotuning
process brings an important gain in both call admission rate and user throughput.

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