tailieunhanh - Báo cáo hóa học: " Research Article Intercell Radio Resource Management through Network Coordination for IMT-Advanced Systems Young-June Choi,1 Narayan Prasad,2 and Sampath "

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Intercell Radio Resource Management through Network Coordination for IMT-Advanced Systems Young-June Choi,1 Narayan Prasad,2 and Sampath | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 531347 13 pages doi 2010 531347 Research Article Intercell Radio Resource Management through Network Coordination for IMT-Advanced Systems Young-June Choi 1 Narayan Prasad 2 and Sampath Rangarajan2 1 School of Information and Computer Engineering Ajou University Suwon 443-749 Republic of Korea 2NEC Laboratories America Princeton NJ 08540 USA Correspondence should be addressed to Young-June Choi choiyj@ Received 12 January 2010 Accepted 8 July 2010 Academic Editor Mohammad Shikh-Bahaei Copyright 2010 Young-June Choi et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. In IMT-Advanced systems a cross-layer approach coupling network coordination and radio resource managements enables mitigation of intercell interference and throughput improvement of cell-edge users. To facilitate coordination among base stations we propose a new radio-resource management framework where cell-edge users and cell-interior users are separately managed by two different radio-resource managers. In the proposed framework we address the issue of how to classify a user as cell-edge user or cell-interior user and how much radio resource the cell-edge users may occupy. We present a solution where a user switches the user type so as to maximize overall network throughput subject to the condition that their own throughput does not decrease upon switching. We verify our solution using analysis and simulation experiments where two or three BSs are coordinated to support fractional frequency reuse or macrodiversity and demonstrate that our solution can guarantee superior cell-edge performance and achieve a high network throughput. 1. Introduction Recent developments in the area of wireless communications have