Title：Smart Small Cells for Next Generation Cognitive Heterogeneous Networks
Speaker：Prof. Bo Rong
Host：Prof. Wenjing Li
Time：September 6th,2016 (Monday) 10:00-12:00 AM
Location：New Research Building Room 610
Abstract：
The deployment and operation of cellular networks are becoming an extremely complicated task due to the growing scale and complexity of information systems. Human based network configuration has been proven to be labor-intensive, costly, and error-prone, and any slight oversight may result in customers’ dissatisfaction with a significant loss of revenue. To solve this problem, 3GPP Long Term Evolution (LTE) introduced self-organizing networks (SON) as a key technique to assist operation and management of radio access network (RAN) autonomously. In the meantime, the paradigm of heterogeneous networks (HetNets) was introduced in LTE Advanced (LTE-A) standards to allow operators to deploy low power small cells in addition to macro cells in the same channel. HetNets provide the service providers with a cost effective roll-out plan of much reduced financial risks. SON plays a critical part in a successful HetNet operation, which usually involves various types of coexisting cells and myriad network parameters that need to be configured and optimized.
In the existing standards, 3GPP Release 8 and 9 specified the most important SON related objectives, including interference control, capacity optimization, mobility load balancing, mobility robustness optimization, and energy saving management for homogeneous topology. In 3GPP Releases 10 and 11, SON for HetNets was recommended for technical requirement study. In the open literature, most existing work focused on the SON for homogeneous code division multiple access (CDMA) and LTE systems. There is, however, still a huge gap waiting to be filled regarding the architecture, strategies and algorithms for HetNet SON.
Different from previous work, this presentation will develop an adaptive SON scheme by taking into account cognitive radio, inter-cell interference coordination and cell sectorization. By definition, CR is a radio that can change its transmitter parameters by interacting with environment based on two main characteristics, i.e., cognitive capability and re-configurability. Our SON scheme mainly focuses on the cognitive capability or spectrum sensing in other words, due to its low infrastructure requirement and easy implementation in smart low-power nodes (SLPNs). Particularly, we employ spectrum sensing to measure the spectral content for self-configuration and optimization in an SLPN. This presentation will also touch some advanced research topics related to adaptive SON, such as multiple-input and multiple-output (MIMO), game theory, etc.
Prof. Bo Rong Bio：
Bo Rong received the B.S. degree from Shandong University in 1993, the M.S. degree from Beijing University of Aeronautics and Astronautics in 1997, and the Ph.D. degree from Beijing University of Posts and Telecommunications in 2001. He is currently a Research Scientist with Communications Research Centre Canada, Ottawa, ON. He is also an Adjunct Professor at Ecole de technologie superieure (ETS), Universite du Quebec, Canada. Dr. Rong has authored or coauthored over 70 technical papers in major journals and conferences, as well as two book chapters in the areas of wireless networking & communications. Many of these publications have theoretical and practical significance to the research community and industry. For example, his work “Call Admission Control Optimization in WiMAX Networks”, was ranked #1 most accessed paper in August 2008 among all papers published in IEEE Transactions on Vehicular Technology, and #69 among all IEEE papers. Dr. Rong’s research interests include modeling, simulation, and performance analysis of next-generation wireless networks. He is a member of IEEE Communications Society and IEEE Broadcasting Society. He serves as an Associate Editor for IEEE COMMUNICATIONS LETTERS as well as the Guest Editor of special issues for IEEE COMMUNICATIONS MAGAZINE and IEEE WIRELESS COMMUNICATIONS MAGAZINE.
SKL-NST
September 1st,2016
