FERMI: A Femtocell Resource Management System for Interference Mitigation in OFDMA Networks
- Authors
- Arslan, Mustafa Y.; Yoon, Jongwon; Sundaresan, Karthikeyan; Krishnamurthy, Srikanth V.; Banerjee, Suman
- Issue Date
- Sep-2011
- Publisher
- ACM
- Keywords
- Algorithms; Experimentation; Performance
- Citation
- MOBICOM - Mobile Computing and Networking, pp 25 - 36
- Pages
- 12
- Indexed
- FOREIGN
- Journal Title
- MOBICOM - Mobile Computing and Networking
- Start Page
- 25
- End Page
- 36
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/114865
- DOI
- 10.1145/2030613.2030617
- Abstract
- The demand for increased spectral efficiencies is driving the next generation broadband access networks towards deploying smaller cells (femtocells) with sophisticated air interface technologies (Or- thogonal Frequency Division Multiple Access or OFDMA). The projected dense deployment of femtocells however, makes interfer- ence and hence resource management both critical and extremely challenging. In this paper, we design and implement one of the first resource management systems, FERMI, for OFDMA-based femtocell networks. As part of its design, FERMI (i) provides re- source isolation in the frequency domain (as opposed to time) to leverage power pooling across cells to improve capacity; (ii) uses measurement-driven triggers to intelligently distinguish clients that require just link adaptation from those that require resource isola- tion; (iii) incorporates mechanisms that enable the joint scheduling of both types of clients in the same frame; and (iv) employs ef- ficient, scalable algorithms to determine a fair resource allocation across the entire network with high utilization and low overhead. We implement FERMI on a prototype four-cell WiMAX femtocell testbed and show that it yields significant gains over conventional approaches.
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