Centralized mobility load balancing scheme in LTE systems

Centralized mobility load balancing scheme in LTE systems
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DOI：
10.1109/iswcs.2011.6125373
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发表时间：
2011-11
期刊：
2011 8th International Symposium on Wireless Communication Systems
影响因子：
--
通讯作者：
Junichi Suga;Yuji Kojima;M. Okuda
Junichi Suga;Yuji Kojima;M. Okuda
中科院分区：
其他
文献类型：
--
作者：
Junichi Suga;Yuji Kojima;M. Okuda

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MLB (Mobility Load Balancing) is one of the use cases of SON (Self-Organizing Network) discussed in NGMN and 3GPP. The objective of MLB is to reduce the number of low throughput users and the call blocking rate, when cell loads such as radio resources are unbalanced among cells, by adjusting handover parameters. In this paper, we focus on adjusting the HO margin which is one of the handover parameters and propose a centralized solution for MLB where a central server decides optimal HO margins considering load distribution among cells. In addition, we also present simulations results to demonstrate that our proposed solution reduces the number of low throughput users compared with a distributed solution.