TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Multi-Cluster based Dynamic Channel Assignment for Dense Femtocell Networks |
| 영문제목(English Title) |
Multi-Cluster based Dynamic Channel Assignment for Dense Femtocell Networks |
| 저자(Author) |
Se-Jin Kim
IlKwon Cho
ByungBog Lee
Sang-Hyun Bae
Sang-Hyun Ba
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| 원문수록처(Citation) |
VOL 10 NO. 04 PP. 1535 ~ 1554 (2016. 04) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
This paper proposes a novel channel assignment scheme called multi-cluster based dynamic channel assignment (MC-DCA) to improve system performance for the downlink of dense femtocell networks (DFNs) based on orthogonal frequency division multiple access (OFDMA) and frequency division duplexing (FDD). In order to dynamically assign channels for femtocell access points (FAPs), the MC-DCA scheme uses a heuristic method that consists of two steps: one is a multiple cluster assignment step to group FAPs using graph coloring algorithm with some extensions, while the other is a dynamic subchannel assignment step to allocate subchannels for maximizing the system capacity. Through simulations, we first find optimum parameters of the multiple FAP clustering to maximize the system capacity and then evaluate system performance in terms of the mean FAP capacity, unsatisfied femtocell user equipment (FUE) probability, and mean FAP power consumption for data transmission based on a given FUE traffic load. As a result, the MC-DCA scheme outperforms other schemes in two different DFN environments for commercial and office buildings.
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| 키워드(Keyword) |
OFDMA-FDD
Femtocell networks
Dynamic channel assignment
Multiple clustering
Graph coloring
Interference mitigation
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