Research Article
Inter-operator Interference Coordination in the Spectrum-Sharing Overlapping Area
@INPROCEEDINGS{10.1007/978-3-319-76207-4_16, author={Yiteng Wang and Youping Zhao and Xin Guo and Chen Sun}, title={Inter-operator Interference Coordination in the Spectrum-Sharing Overlapping Area}, proceedings={Cognitive Radio Oriented Wireless Networks. 12th International Conference, CROWNCOM 2017, Lisbon, Portugal, September 20-21, 2017, Proceedings}, proceedings_a={CROWNCOM}, year={2018}, month={3}, keywords={Dynamic Spectrum Access (DSA) Inter-operator interference Spectrum Access System (SAS) Undirected weighted graph}, doi={10.1007/978-3-319-76207-4_16} }- Yiteng Wang
Youping Zhao
Xin Guo
Chen Sun
Year: 2018
Inter-operator Interference Coordination in the Spectrum-Sharing Overlapping Area
CROWNCOM
Springer
DOI: 10.1007/978-3-319-76207-4_16
Abstract
With the widespread application of dynamic spectrum access technology, sharing spectrum with the same primary systems by multiple operators will become a common scenario. Serious co-channel interference (CCI) needs to be mitigated if there is no coordination among the operators. In this paper, a cluster-based interference management algorithm is proposed to reduce the inter-operator CCI in the spectrum-sharing overlapping area. The proposed algorithm consists of two major steps: (1) undirected weighted graph-based clustering and spectrum allocation; (2) signal to interference and noise ratio (SINR) margin-based power adjustment. A novel weight is defined and employed in the clustering procedure to take the SINR requirement of each secondary user (SU) into account. Simulation results show that the ratio of satisfied SUs (whose SINR exceeds their SINR thresholds) can be increased while the sum of co-channel interference is significantly reduced. Furthermore, by introducing a third-party agent, direct exchange of sensitive SU information between different operators can be avoided for better privacy protection.