| 1 | Mobile Edge Communications, Computing, and Caching(MEC3) Technology in the Maritime Communication Network显示文摘With the increasing maritime activities and the rapidly developing maritime economy, the fifth-generation(5G) mobile communication system is expected to be deployed at the ocean. New technologies need to be explored to meet the requirements of ultra-reliable and low latency communications(URLLC) in the maritime communication network(MCN). Mobile edge computing(MEC) can achieve high energy efficiency in MCN at the cost of suffering from high control plane latency and low reliability. In terms of this issue, the mobile edge communications, computing, and caching(MEC3) technology is proposed to sink mobile computing, network control, and storage to the edge of the network. New methods that enable resource-efficient configurations and reduce redundant data transmissions can enable the reliable implementation of computing-intension and latency-sensitive applications. The key technologies of MEC3 to enable URLLC are analyzed and optimized in MCN. The best response-based offloading algorithm(BROA) is adopted to optimize task offloading. The simulation results show that the task latency can be decreased by 26.5’ ms, and the energy consumption in terminal users can be reduced to 66.6%. | Jie Zeng Jiaying Sun Binwei Wu Xin Su | 2020 | China Communications2020，17，5： | 14 |
| 2 | Energy-Efficient Configuration of Power Resource for OFDM-Based Opportunistic Regenerative Relay Links显示文摘In this paper, adaptive Power allocation(PA) on the source and relay is investigated to maximize Energy efficiency(EE) for OFDM-based Opportunistic regenerative relay links(O2RL). We derive EE function from O2 RL model by appropriate definition of variables to represent source/relay PA, Subcarrier transmission mode selection(STMS), and circuit power consumptions elegantly.Theoretical analysis demonstrates that EE function for O2 RL is strictly quasi-concave with respect to the overall transmit power. Exploiting the quasi-concavity property of the EE function, an EE-oriented optimal PA iterative method for O2 RL is proposed which used the bisection method to speed up the search of the optimum. Simulation results demonstrate that the O2 RL is more energyefficient than Traditional cooperative relaying strategies(TCRS), and the proposed method as compared to the Sum throughput maximization PA(STMPA) method is able to significantly improve performance in terms of system EE. | FENG Li KUANG Yujun WU Binwei | 2016 | Chinese Journal of Electronics2016，25，2： | 2 |
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