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Concurrent transmission for energy efficiency of user equipment in 5G wireless communication networks

5G网络中面向终端能效的并发传输问题研究

  • Research Paper
  • Special Focus on 5G Wireless Communication Networks
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Abstract

In this paper, we investigate concurrent transmission among multiple radio access technologies (RATs) for energy efficiency (EE) of multi-mode user equipment (MUE) in 5G wireless communication networks. Considering both the static circuit power consumption of the MUE and channel state information of different RATs, we propose an EE maximization concurrent transmission (EXACT) strategy by fully utilizing the multi-RAT combining gain of concurrent transmission. In particular, we formulate such EE maximization concurrent transmission problem as a mixed binary integer programming (MIP), and under some given static circuit power conditions, the optimal RATs selection and transmission rates for establishing concurrent transmission among multiple RATs are derived. Furthermore, in order to deal with the challenging MIP, an approximate expression is derived to simplify the integer constraints, thus the original MIP is transformed into a nonlinear continuous optimization problem. Consequently, a low complexity heuristic algorithm for general static circuit power conditions, which can achieve the near-optimal solution, is presented. Simulation results confirm the effectiveness of the EXACT strategy and show that the EE performance of the MUE can be significantly improved by reasonable and effective utilization of multiple RATs to execute concurrent transmission.

创新点

本文研究了使用并发传输技术在终端设备节能方面的应用,针对上行传输的特点,讨论了设备静态功耗对并发传输的影响,并在某些静态功耗条件下,对并发传输模型进行了必要的修正,提出达到理论最优值的上行最优能效并发传输策略。更进一步,针对上行传输一般情况,使用连续函数对整数问题进行了重建,并以此为基础,提出了能够逼近最优解的并发传输策略。

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Authors and Affiliations

  1. School of Physics and Information Technology, Shaanxi Normal University, Xi’an, 710119, China

    Xiao Ma & Qiuju Yang

  2. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, 710072, China

    Min Sheng & Jiandong Li

Authors
  1. Xiao Ma
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  2. Min Sheng
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  3. Jiandong Li
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  4. Qiuju Yang
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Correspondence to Min Sheng.

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Ma, X., Sheng, M., Li, J. et al. Concurrent transmission for energy efficiency of user equipment in 5G wireless communication networks. Sci. China Inf. Sci. 59, 1–15 (2016). https://doi.org/10.1007/s11432-015-5507-3

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  • DOI: https://doi.org/10.1007/s11432-015-5507-3

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