Resource scheduling in downlink LTE-advanced system with carrier aggregation

doi:10.1016/S1005-8885(11)60226-4

中国邮电高校学报(英文) ›› 2012, Vol. 19 ›› Issue (1): 44-49.doi: 10.1016/S1005-8885(11)60226-4

Resource scheduling in downlink LTE-advanced system with carrier aggregation

林乐翔,刘元安,刘芳,谢刚,刘凯明,葛新阳

北京邮电大学

收稿日期:2011-06-03 修回日期:2011-10-17 出版日期:2012-02-28 发布日期:2012-02-21
通讯作者: 林乐翔 E-mail:llx617@yahoo.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (60873190, 60973111) and the Undamental Research Funds for the Central Universities (G470216, 2009RC0308, G470427, G470209), and the Technology Specific Projects (2010ZX03005-001-03).

Resource scheduling in downlink LTE-advanced system with carrier aggregation

1. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China 2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2011-06-03 Revised:2011-10-17 Online:2012-02-28 Published:2012-02-21
Contact: LeXiang LIN E-mail:llx617@yahoo.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (60873190, 60973111) and the Undamental Research Funds for the Central Universities (G470216, 2009RC0308, G470427, G470209), and the Technology Specific Projects (2010ZX03005-001-03).

摘要/Abstract

摘要：

In this paper, we focus on the resource scheduling in the downlink of long term evolution advanced (LTE-A) assuming equal power allocation among subcarriers. Considering the backward compatibility, the LTE-A system serves LTE-A and long term evolution (LTE) users together with carrier aggregation (CA) technology. When CA is applied, a well-designed resource scheduling scheme is essential to the LTE-A system. Joint scheduling (JS) and independent scheduling (INS) are two resource scheduling schemes. JS is optimal in performance but with high complexity. Whereas INS is applied, the LTE users will acquire few resources because they can not support CA technology. And the system fairness is disappointing. In order to improve the system fairness without bringing high complexity to the system, an improved proportional fair (PF) scheduling algorithm base on INS is proposed. In this algorithm, we design a weigh factor which is related with the number of the carriers and the percentage of LTE users. Simulation result shows that the proposed algorithm can effectively enhance the throughput of LTE users and improve the system fairness.

关键词:

LTE-advanced system, resource allocation, carrier aggregation, proportional fairness

Abstract:

Key words:

LTE-advanced system, resource allocation, carrier aggregation, proportional fairness

参考文献

1. Parkvall S, Furuskar A, Dahlman E. Evolution of LTE toward IMT-advanced. IEEE Communications Magazine, 2011, 49 (2): 84-91

2. Ghosh A, Ratasuk R, Mondal B, et al. LTE-advanced: next-generation wireless broadband technology. IEEE Wireless Communications, 2010, 17(3): 10-22

3. Nokia. Carrier aggregation configurations and DL/UL linkage. 3GPP TDocs (written contributions) at Meeting, R1-59, Nov 11-13, 2009, Jeju Island, Republic of Korea. 2009: R1-094642

4. Johansson K, Bergman K, Gerstenberger D, et al. Multi-carrier HSPA evolution. Proceedings of the 69th Vehicular Technology Conference (VTC-Spring’09), Apr 26-29, 2009, Barcelona, Spain. Piscataway, NJ, USA: IEEE, 2009: 5p

5. Iwamura M, Etemad K, Fong M, et al. Carrier aggregation framework in 3GPP LTE-advanced. IEEE Communications Magazine, 2010, 48(8): 60-67

6. Yuan G X, Zhang X, Wang W B, et al. Carrier aggregation for LTE-advanced mobile communication systems. IEEE Communications Magazine, 2010, 48(2): 88-93

7. CATT, RITT. Carrier aggregation for LTE-A. 3GPP TDocs (written contributions) at Meeting, R1-55b, Jan 12-16, 2009, Ljubljana, Slovenia. 2009: R1-090187

8. Wang Y Y, Pedersen K I, Mogensen P E, et al. Resource allocation considerations for multi-carrier LTE-advanced systems operating in backward compatible mode. Proceedings of the 20th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC’09), Sep 13-16, 2009, Tokyo, Japan. Piscatawaw, NJ, USA: IEEE, 2009: 370-374

9. LG Electronics. Construction of PDCCH search spaces for cross-carrier scheduling in multiple carrier aggregation. 3GPP TDocs (written contributions) at Meeting, R1-59b, Jan 18-22, 2009, Valencia, Spain. 2009: R1-100214

10. Zhang L, Zheng K, Wang W, et al. Performance analysis on carrier scheduling schemes in the long-term evolution-advanced system with carrier aggregation. IET Communications, 2011, 5(5): 612-617

11. Shi S S, Feng C Y, Guo C L. A resource scheduling algorithm based on user grouping for LTE-advanced system with carrier aggregation. Proceedings of the 2nd International Symposium on Computer Network and Multimedia Technology (CNMT’09), Jan 18-20, 2009, Wuhan, China. Piscataway, NJ, USA: IEEE, 2010: 4p

12. Liu F, Liu Y Y. Uplink scheduling for LTE-advanced system. Proceedings of the 11th IEEE Singapore International Conference on Communication Systems (ICCS’10), Nov 17-19, 2010, Singapore. Piscataway, NJ, USA: IEEE , 2010: 316-320

13. Nguyen T, Han Y. A proportional fairness algorithm with QoS provision in downlink OFDMA systems. IEEE Communications Letters, 2006, 10(11): 760-762

14. Kaneko M, Popovski P, Dahl J. Proportional fairness in multi-carrier system with multi-slot frames: upper bound and user multiplexing algorithms. IEEE Transactions on Wireless Communications, 2008, 7(1): 22-26

Resource scheduling in downlink LTE-advanced system with carrier aggregation

Resource scheduling in downlink LTE-advanced system with carrier aggregation

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价