Title :
Centralized mobility load balancing scheme in LTE systems
Author :
Suga, Junichi ; Kojima, Yuji ; Okuda, Masato
Author_Institution :
Fujitsu Labs. Ltd., Kawasaki, Japan
Abstract :
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.
Keywords :
Long Term Evolution; mobility management (mobile radio); resource allocation; 3GPP; 3rd generation partnership project; LTE systems; call blocking rate; central server; centralized mobility load balancing scheme; load distribution; long term evolution; low throughput users; next generation management network; optimal handover margins; radio resources; self-organizing network; Load management; Manganese; Mobile computing; Prediction algorithms; Servers; Simulation; Throughput; handover; mobility load balancing; self-organizing network;
Conference_Titel :
Wireless Communication Systems (ISWCS), 2011 8th International Symposium on
Conference_Location :
Aachen
Print_ISBN :
978-1-61284-403-9
Electronic_ISBN :
2154-0217
DOI :
10.1109/ISWCS.2011.6125373
