상세정보
학술대회
Achieving Fair Cell-Edge Performance: Low-Complexity Interference Coordination in OFDMA Networks
- 발행일
- 201802
- 출처
- International Conference on Advanced Communications Technology (ICACT) 2018, pp.6-11
- 협약과제
- 17HF1600, (통합)초연결 스마트 서비스를 위한 5G 이동통신 핵심기술개발, 정현규
- 초록
- We propose a low-complexity downlink interference coordination algorithm in OFDMA networks. The algorithm aims to achieve high proportional fairness among cell-edge users, as the effects of inter-cell interference are most noticeable in cell-edge areas where users are interfered by signals from neighbor base-stations. We demonstrate that the performance of our algorithm is greater than that of a decentralized algorithm which aims at interference randomization. Our algorithm consists of two stages. In the first stage, it constructs a bipartite graph that describes which set of base-stations imposes significant interference on each cell-edge user. In the second stage, exploiting the structure of the constructed graph, it solves an optimization problem to attain high proportional fairness.
- KSP 제안 키워드
- Bipartite graph, Coordination Algorithm, Decentralized algorithm, First stage, OFDMA networks, Optimization problem, Proportional Fairness, cell-edge users, downlink interference, inter-cell interference(ICI), interference coordination