Abstract Two position-assisted fast handover schemes, scheme A and scheme B, for LTE-A system under very high mobility scenarios, are proposed, together with their performance evaluation. Scheme A is designed to reduce handover delay by making handover preparation before handover starts. Scheme B aims at reducing unnecessary handovers and improving handover success rate, by calculating the geographically best target handover cell, which makes it easier for mobile terminals to access the target cell. A system level simulation is conducted to evaluate the performance of these two schemes. It is shown that, scheme A could reduce inter-site handover delay by about 50 ms, while scheme B could cut down nearly 50% of all handovers when time-to-trigger (TTT) is 0 ms. Besides, as TTT gets larger, Scheme B has much better success rate.
This work was supported by the National Natural Science Foundation of China (No. 61032002), the National Basic Research Program of China (973 Program No. 2012CB316100), and the 111 project (No. 111-2-14). The authors would like to thank Miss Ziyue Liu for her insightful comments and discussions.
Cite this article:
Ming FEI, Pingzhi FAN.Position-assisted fast handover schemes for LTE-advanced network under high mobility scenarios[J] JMT, 2012,V20(4): 268-273
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