Abstract
Densely deployed APs put forward new challenges to the mobility of UEs. The AP/small cell coverage will lead to a rising in the UE handover frequency and increasing of the handover failure. In addition, the dense deployment of APs needs to optimize the configuration of the handover threshold, which gives the challenges of network planning. Dual connection can reduce the handover failure rate, UE at least can guarantee the connection in the Master evolved Node B (MeNB), but when the UE in the Secondary evolved Node B (SeNB) changing, its throughput is reduced and the user experience is poor. The APG is suitable for all scenarios, especially for the scenario without the macro station, in which the APs can achieve smooth changing and the user experience is better.
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3GPP, “Further Advancements for E-UTRA Physical Layer Aspects (Release 9),” 3GPP TR 36.814 V9.0.0, March, 2010.
3GPP, “Mobility Enhancements in Heterogeneous Networks (Rel 12),” 3GPP TR 36.839 V12.0.0, December, 2013.
3GPP, “Technical Specification Group Radio Access Network; Small cell enhancements for E-UTRA and E-UTRAN - Physical layer aspects (Rel 12),” 3GPP TR 36.872 V12.0.0, September, 2013.
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Chen, S., Qin, F., Hu, B., Li, X., Chen, Z., Liu, J. (2018). Simulation and System Solution. In: User-Centric Ultra-Dense Networks for 5G. SpringerBriefs in Electrical and Computer Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-61201-0_7
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DOI: https://doi.org/10.1007/978-3-319-61201-0_7
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