Title :
Autonomic downlink inter-cell interference coordination in LTE Self-Organizing Networks
Author :
Vlacheas, Panagiotis ; Thomatos, Evangelos ; Tsagkaris, Kostas ; Demestichas, Panagiotis
Author_Institution :
Dept. of Digital Syst., Univ. of Piraeus, Piraeus, Greece
Abstract :
This paper provides a mathematical formulation for Downlink Inter-Cell Interference Coordination (ICIC), in the context of a 3GPP Long-Term Evolution (LTE) Self-Organizing Network (SON). SON concepts have been introduced in LTE standardization in order to increase the network performance and reduce the operational expenditure for operators. Among the proposed SON use cases, ICIC is of utmost importance, since, in OFDMA-based networks, inter-cell interference is the main factor hindering the achievement of the high rate requirements, especially in downlink, where broadband services exist. Coordinated usage of resources in the related cells, by means of a scheme that is distributed, autonomic, context-aware, policy-driven and knowledge-based, is proposed in this study as an effective ICIC approach. A set of results is provided, for showing the effectiveness of the scheme in terms of Quality of Service and spectral efficiency.
Keywords :
3G mobile communication; Long Term Evolution; OFDM modulation; broadband networks; frequency division multiple access; interference suppression; knowledge based systems; performance evaluation; quality of service; self-organising feature maps; telecommunication computing; ubiquitous computing; 3GPP long-term evolution self-organizing network; ICIC; LTE SON; LTE self-organizing networks; LTE standardization; OFDMA-based networks; autonomic downlink inter-cell interference coordination; autonomic scheme; broadband services exist; context-aware scheme; distributed scheme; high rate requirements; knowledge-based scheme; mathematical formulation; network performance; operational expenditure; policy-driven scheme; quality of service; spectral efficiency; Context; Downlink; Interference; OFDM; Quality of service; Resource management; Throughput; fuzzy logic; inter-cell interference coordination; network management; policies; reinforcement learning; self-organized networks;
Conference_Titel :
Network and Service Management (CNSM), 2011 7th International Conference on
Conference_Location :
Paris
Print_ISBN :
978-1-4577-1588-4
Electronic_ISBN :
978-3-901882-44-9
