DocumentCode :
42333
Title :
A Heuristic Coordination Framework for Self-Optimizing Mechanisms in LTE HetNets
Author :
Gelabert, Xavier ; Sayrac, Berna ; Ben Jemaa, Sana
Author_Institution :
Huawei Technol. Sweden AB, Kista, Sweden
Volume :
63
Issue :
3
fYear :
2014
fDate :
Mar-14
Firstpage :
1320
Lastpage :
1334
Abstract :
A self-organizing network (SON) is effectively realized by means of specific SON mechanisms (SONm), which relate to particular SON use cases (SONuc), these being defined by the Third-Generation Partnership Project (3GPP) and Next Generation Mobile Networks (NGMN). Typically, SONuc are grouped into self-configuration, self-optimization, and self-healing functions. Focusing on self-optimization, SONm therein aim at maintaining relevant key performance indicators (KPIs) above/below a specific target by actuating over an appropriate set of input parameters to achieve predefined network objectives. Typically, this problem is represented by several control loops where controllable input parameters are dynamically adjusted according to output measurable metrics and their corresponding target requirements. From an implementation viewpoint, the concept of a single SON “black box,” integrating multiple SONm, is very appealing. However, this approach may threaten the control that network operators (NOPs) have over their own network. As a result, a coordinated framework involving stand-alone SONm is proposed. Here, a SON controller (SONc) may be implemented responding to strategies, deciding at a given time which SONm actions have higher priority with respect to others. In the context of a heterogeneous network (HetNet) scenario, we propose and develop a simplified framework where stand-alone SONm react to either overshot or undershot KPI events by deciding to either increase or decrease corresponding influential parameter(s). By inspecting the arising interactions and possible conflicts between several SONm, we provide, for a specific evaluation scenario, a heuristic strategy-based solution for SON coordination, which may eventually trade off high-level NOP goals.
Keywords :
3G mobile communication; Long Term Evolution; next generation networks; optimisation; 3GPP; KPI; LTE HetNets; NGMN; NOP; Next Generation Mobile Networks; SON controller; SONc; SONm; Third-Generation Partnership Project; heterogeneous network; heuristic coordination framework; key performance indicators; network operators; self-optimizing mechanisms; self-organizing network; specific SON mechanism; Context; Long Term Evolution; Measurement; Optimization; Quality of service; Rats; Heterogeneous networks (HetNets); performance evaluation; self-organizing networks (SONs);
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2013.2285012
Filename :
6623198
Link To Document :
بازگشت