Integrated Power Saving for Multiple Relays and UEs in LTE-TDD

Authors: Chun-Chuan Yang, Jeng-Yueng Chen, Yi-Ting Mai, Chen-Ming Yang

Abstract:

In this paper, the design of integrated sleep scheduling for relay nodes and user equipments under a Donor eNB (DeNB) in the mode of Time Division Duplex (TDD) in LTE-A is presented. The idea of virtual time is proposed to deal with the discontinuous pattern of the available radio resource in TDD, and based on the estimation of the traffic load, three power saving schemes in the top-down strategy are presented. Associated mechanisms in each scheme including calculation of the virtual subframe capacity, the algorithm of integrated sleep scheduling, and the mapping mechanisms for the backhaul link and the access link are presented in the paper. Simulation study shows the advantage of the proposed schemes in energy saving over the standard DRX scheme.

Keywords: LTE-A, Relay, TDD, Power Saving.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1340118

References:

[1] 3GPP TS 36.300, “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN),” Rel. 8, v8.5.0, May 2008.
[2] 3GPP TS 36.300, “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN),” Rel. 10, v10.3.0, Mar. 2011.
[3] C.-C. Yang, Y.-T. Mai, J.-Y. Chen, Y.-S. Shen, and Y.-C. Kuo, “LBPS: Load-based Power Saving in the IEEE 802.16e Network,” Computers and Electrical Engineering, vol. 38, no. 4, July 2012, pp. 891-905.
[4] C.-C. Yang, J.-Y. Chen, Y.-T. Mai, and C.-H. Liang, “Adaptive Load-based and Channel-aware Power Saving for Non-Real-Time Traffic in LTE,” EURASIP Journal on Wireless Communications and Networking, vol. 2015, Issue 1.
[5] C.-C. Yang, J.-Y. Chen, Y.-T. Mai, and H.-H. Liu, “Integrated Power Saving for Relay Node and User Equipment in LTE-A,” International Journal of Communication Systems, vol. 29, no. 8, May 2016, pp. 1342–1364.
[6] C.-C. Yang, J.-Y. Chen, Y.-T. Mai, and Z.-Y. Pan, “Load-Based Power Saving for Downlink Non-Real-Time Traffic in LTE-TDD,” Proceedings, 2016 World Conference on Innovation, Engineering, and Technology (IET 2016), June 24-26, 2016, pp. 83-98, Sapporo, Japan.
[7] Z. Ma, W. Xiang, H. Long, and W. Wang, “Proportional Fair Resource Partition for LTE-Advanced Networks with Type I Relay Nodes,” Proceedings, IEEE International Conference on Communications (ICC), June 5-9, 2011, pp. 1-5, Kyoto.
[8] Z.Y. Zhao, J. Wang, S. Redana, and B. Raaf, “Downlink Resource Allocation for LTE-Advanced Networks with Type1 Relay Nodes,” Proceedings, IEEE Vehicular Technology Conference (VTC Fall), Sept. 3-6, 2012, pp. 1-5, Quebec City, QC.
[9] X.-L. Wu, W.-J. Zhao, and W. Wu, “Throughput and fairness-balanced resource allocation algorithm in TD-LTE-Advanced relay-enhanced network,” Proceedings, International Workshop on High Mobility Wireless Communications (HMWC), Nov. 1-3, 2013, pp. 82-86, Shanghai.
[10] L. Yang and A. Harada, “A spectrum allocation scheme for adjacent channel interference mitigation in relay backhaul link in coexisting FDD and TDD systems,” Proceedings, IEEE Wireless Communications and Networking Conference (WCNC), April 7-10, 2013, pp. 516-521, Shanghai.
[11] Y. Yuda, A. Iwata, and D. Imamura, “Interference Mitigation Using Coordinated Backhaul Timing Allocation for LTE-Advanced Relay Systems,” Proceedings, IEEE International Conference on Communications (ICC), June 5-9, 2011, pp. 1-5, Kyoto.
[12] W. Hong, J. Han, and H. Wang, “Full Uplink Performance Evaluation of FDD/TDD LTE-Advanced Networks with Type-1 Relays,” Proceedings, IEEE Vehicular Technology Conference (VTC Fall), Sept. 5-8, 2011, pp. 1 – 5, San Francisco, CA.
[13] M. Ding, D. L. Pérez, A. V. Vasilakos, and W. Chen, “Dynamic TDD transmissions in homogeneous small cell networks,” Proceedings, IEEE International Conference on Communications Workshops (ICC), June 10-14, 2014, pp. 616-621, Sydney, NSW.
[14] H. Liu, Y. Jiao, Y. Gao, L. Sang, and D. Yang, “Performance evaluation of flexible duplex implement based on radio frame selection in LTE heterogeneous network,” Proceedings, 22nd International Conference on Telecommunications (ICT), April 27-29, 2015, pp. 308-312, Sydney, NSW.
[15] M. Malmirchegini, R. Yenamandra, K. R. Chaudhuri, and J. E. V. Bautista, “Distributed and Adaptive Optimization of LTE-TDD Configuration Based on UE Traffic Type,” Proceedings, IEEE 81st Vehicular Technology Conference (VTC Spring), May 11-14, 2015, pp. 1-6, Glasgow.