ID 原文 译文
58308 针对雾计算应用中服务设施放置问题,将其建模成(p + m)鄄中点问题,提出了一种基于贪婪策略与禁忌搜索 策略相结合的启发式服务设施放置算法. This service facility placement problem is investigated, which appears representatively in fog computing for the cost minimization and the optimal resource utilization. After the problem being mod鄄 elled as a (p + m)鄄median problem, a novel heuristic placement algorithm is proposed that combines the greedy and tabu鄄search strategies.
58309 提出的算法适用于一般拓扑、任意需求分布的网络. The proposed algorithm can be used in networks with arbitrary topology and random demand distribution.
58310 性能分析结果表明, 提出的算法是多项式时间的,在当扩展服务节点数和请求节点数相等时能够达到性能上的最优. Analysis results show that it is polynomial in time complexity and can reach the optimal performance in the case that the number of the extended service nodes in the network is equal to that of request nodes.
58311 仿真结果验证了 新算法的有效性. Finally, simulations verify the advantages above.
58312 通过分析亚太地区对 IMT-2020 各候选毫米波频段的观点，提出将 40.5 ～ 42.5 GHz 作为进一步研究的候选频段. 0. 5 ～ 42. 5 GHz is considered as a candidate of IMT-2020 bands by analysis current status ofeach country in Asia-Pacific region and IMT-2020 scenarios of related millimeter wave，both indoor hotspot and dense urban test environments are defined，based on massive multiple-input multiple-outputbeamforming.
58313 在 IMT-2020 毫米波场景下，给出了面向大规模天线波束赋型的室内热点和密集城区 2 种测试环境，通过耦合损耗和用户信干噪比来分析测试环境下的毫米波信道特征，并对关键技术指标小区平均频谱效率和小区边缘用户频谱效率进行评估，经观察发现，2 种测试环境的评估结果均满足 ITU-Ｒ 定义的要求. Meanwhile，coupling loss and signal to interference plus noise ratio distribution are appliedto study channel characterizes of each test environment. Finally，introduced both average cell spectral efficiency and 5th percentile user spectrum efficiency evaluates each test environment; and their evaluated results meet defined requirements by ITU-Ｒ.
58314 提出了一种大规模机器类通信( mMTC) 中基于功率控制的高可靠低迟延( UＲLL) 上行无线资源优化方案.考虑时分双工蜂窝网络，设计了上行链路传输的反向功率控制方案，并导出了基于距离的链路可靠性函数; An optimal scheme of uplink resource allocation for ultra-reliable and low-latency ( UＲLL) inmassive machine type communications ( mMTC) with power control is proposed. Considering time division duplexing ( TDD) cellular networks，the reverse power control scheme of uplink transmission byusing the distance measurement capability of multi-antenna TDD base station is designed and the linkbased reliability function based on distance is derived.
58315 在此基础上，建立了上行无线资源优化模型，分析了链路可靠性函数的特性，并提出了一种基于黄金分割搜索最优的传输错误概率算法; Further，the optimization model of uplink radioresources is built. Then the characteristic of the link reliability function is analyzed and an optimal transmission error probability algorithm based on golden section is proposed.
58316 给出了一种最小化系统所需的总带宽算法，可为每个用户分配多个子信道，用户通过判断信道增益是否超过门限值来选择子信道. Furthermore，an algorithm tominimize the total bandwidth required by the system is given. Multiple sub-channels may be assigned toeach user，and the user selects the sub-channel by judging whether the channel gain exceeds the threshold.
58317 仿真实验结果表明，新方案在迟延和可靠性的改进以及总带宽、功耗等方面的优势显著. Finally，simulation experiments show the improvement of latency and reliability，as well as the performance advantages of total bandwidth，power consumption and so on.