Network Performance Analysis of TCP-Based 3GPP LTE Time Division Duplex Systems
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Abstract
This paper deals with the determination of downlink (DL) and uplink (UL) channel split ratio for time division duplex (TDD) based long term evolution (LTE) networks. In a TDD system, UL and DL transmissions are carried out at different time intervals, but share the same frequency band. The TDD framing in LTE is adaptive in the sense that the DL to UL bandwidth ratio may vary with time. This paper proposes an adaptive split ratio (ASR) scheme for LTE networks to automatically adjust the bandwidth ratio of DL to UL, according to the current traffic profile, wireless interference, and transport layer parameters. This provides the maximum aggregate throughput in LTE systems. The performance analysis shows that ASR scheme outperforms static allocation in terms of higher aggregate throughput and better adaptively to network dynamics. Further, it is also observed that the ASR scheme performs well for LTE, compared to worldwide interoperability for microwave access (WiMAX) system.
Keywords
LTE TDD Adaptive split ratio ThroughputPreview
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References
- 1.Bogineni K., Ludwig R., Mogensen P., Nandlall V., Vucetic V., Yi B. et al (2009) LTE Part I: Core network. Communications Magazine, IEEE, 47(2): 40–43CrossRefGoogle Scholar
- 2.Balakrishnan, V. N. P. H., & Katz, R. H. (1999). The effects of asymmetry on TCP performance. ACM Mobile Networks and Applications, (pp. 219–241).Google Scholar
- 3.Li, Y. D. , & Liao, W. (2001). Improving TCP performance for asymmetric networks. In Proceedings of IEEE international conference on communications (ICC).Google Scholar
- 4.Liao, W., & Ju, H. J. (2004). Adaptive slot allocation in DOCSIS-based CATV networks. IEEE Transactions on Multimedia. (3), 479–488.Google Scholar
- 5.IEEE standard for local and metropolitan area networks part 16 (2004). : Air interface for fixed broadband wireless access systems. IEEE Standard 802.16-2004.Google Scholar
- 6.Liao, W. (2004). The behavior of TCP over DOCSIS-based CATV networks. IEEE Transactions on Communications, 1633–1642.Google Scholar
- 7.Wang, W., Guo, Z., (Sherman) Shen, X., Chen, C., & Cai, J. (2006). Dynamic bandwidth allocation in IEEE 802.16. In Wireless algorithms, systems, and applications. Lecture notes in computer science, (Vol 4138/2006, pp.104–114), springer.Google Scholar
- 8.Aghdaee Ehsan A., Mani N., Srinivasan B. (2008) An enhanced bandwidth allocation algorithms for QoS provision in IEEE 802.16 BWA. Information Networking. Towards Ubiquitous Networking and Services. Lecture Notes in Computer Science, springer 5200/2008: 709–718CrossRefGoogle Scholar
- 9.Sun Z., Gani A. (2010) Evaluating of on demand bandwidth allocation mechanism for point-to-multipoint mode in WiMAX. Information Computing and Applications. Communications in Computer and Information Science, springer 106(Part 1): 16–23Google Scholar
- 10.Chiang, C. H., Liao, W., Liu, T., Chan, I. K., & Chao, H. L. (2009). Adaptive downlink and UL channel split ratio determination for TCP-based best effort traffic in TDD-based WiMAX networks. IEEE Journal on Selected Areas in Communications, 27(2).Google Scholar
- 11.Chiang, C. H., Liao, W., & Liu, T. (2007). Adaptive uplink/downlink bandwidth allocation for IEEE 802.16 WiMAX networks: A cross-layer approach. Proceedings of the IEEE Globecom.Google Scholar
- 12.Chattrje, M., Sengupta, S., & Ganguly, S. (2007). Feedback-based real time streaming over WiMAX. IEEE Wireless Communications (1), 64–71.Google Scholar
- 13.3GPPTS36.211V8.6.0 3rd Generation Partnership Project; Technical specification group radio access network; Evolved universal terrestrial radio access (E-UTRA); Physical channels and modulation (Release 8).Google Scholar