Dynamic inter-RAT handover decision for offloading heavy traffic in heterogeneous networks

So Yeon Park, Ji Hyeon Kim, Hyung June Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

We present a dynamic inter-RAT handover decision mechanism that allocates network resource for UEs over heterogeneous cells considering UE's mobility, QoS, and cell transition for overload situations. It aims to minimize access failure and handover signalling, while prioritizing UEs with high QoS level for differentiated cell selection. We formulate the problem of dynamic cell selection over a period of time into an optimization problem consisting of step-wise binary integer programs according to UE's moving speed. Simulation results show that our dynamic scheme achieves low access failure ratio in a highly overloaded network. More importantly, the proposed algorithm remarkably diminishes cell handover rate by 20% compared to a counterpart algorithm based on static optimization. We demonstrate that our algorithm successfully controls cell acceptance and connected cell types by prioritizing with UE's QoS and moving speed.

Original languageEnglish
Title of host publicationICUFN 2014 - 6th International Conference on Ubiquitous and Future Networks
PublisherIEEE Computer Society
Pages466-471
Number of pages6
ISBN (Print)9781479934942
DOIs
StatePublished - 2014
Event6th International Conference on Ubiquitous and Future Networks, ICUFN 2014 - Shanghai, China
Duration: 8 Jul 201411 Jul 2014

Publication series

NameInternational Conference on Ubiquitous and Future Networks, ICUFN
ISSN (Print)2165-8528
ISSN (Electronic)2165-8536

Conference

Conference6th International Conference on Ubiquitous and Future Networks, ICUFN 2014
Country/TerritoryChina
CityShanghai
Period8/07/1411/07/14

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