TY - GEN
T1 - Dynamic inter-RAT handover decision for offloading heavy traffic in heterogeneous networks
AU - Park, So Yeon
AU - Kim, Ji Hyeon
AU - Lee, Hyung June
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84906673941&partnerID=8YFLogxK
U2 - 10.1109/ICUFN.2014.6876834
DO - 10.1109/ICUFN.2014.6876834
M3 - Conference contribution
AN - SCOPUS:84906673941
SN - 9781479934942
T3 - International Conference on Ubiquitous and Future Networks, ICUFN
SP - 466
EP - 471
BT - ICUFN 2014 - 6th International Conference on Ubiquitous and Future Networks
PB - IEEE Computer Society
T2 - 6th International Conference on Ubiquitous and Future Networks, ICUFN 2014
Y2 - 8 July 2014 through 11 July 2014
ER -