| 周天琪*,吴文君*,李海灵**,董君宇*,高巨*.移动边缘计算增强的超密集网络上行传输性能分析与基站配置设计[J].高技术通讯(中文),2021,31(9):942~952 |
| 移动边缘计算增强的超密集网络上行传输性能分析与基站配置设计 |
| Analysis of uplink transmission performance and design of SeNB deployment in mobile edge computing enhanced ultra dense networks |
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| DOI：10.3772/j.issn.1002-0470.2021.09.005 |
| 中文关键词: 超密集网络（UDN）； 移动边缘计算（MEC）； 空间泊松点过程（SPPP）； 遍历容量 |
| 英文关键词: ultra dense network（UDN）, mobile edge computing（MEC）, spatial Poisson point process（SPPP）, spatial ergodic capacity |
| 基金项目: |
| 作者 | 单位 | | 周天琪* | | | 吴文君* | | | 李海灵** | | | 董君宇* | | | 高巨* | |
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| 中文摘要: |
| 在引入移动边缘计算（MEC）技术的超密集网络（UDN）中，网络性能受无线传输链路质量和基站计算资源部署的共同影响。本文以小型基站接收干扰信号的统计特性分析为基础，对UDN与MEC结合场景的上行空间遍历容量进行分析，并根据空间业务强度和小基站计算服务排队系统的稳定性约束关系，进行小基站配置设计。首先，采用空间泊松点过程对干扰源用户分布进行建模，同时考虑无线信道的多天线与小尺度衰落特性，以小基站部署密度为变量分析上行用户信干比的统计特性及变化规律；然后，根据排队论计算空间业务强度与MEC服务器计算能力之间的约束关系；最后，采用数值仿真验证了信干比与基站密度关系分析的正确性，得出了空间遍历容量的收敛趋势，并给出了小基站与MEC服务器配置设计的例子。 |
| 英文摘要: |
| In mobile edge computing (MEC) enhanced ultra dense networks (MEC), inter-cell interference has become one of the key problems as the small eNBs (SeNBs) are densely deployed. Based on the analysis of the statistic characteristics of uplink interference to the SeNB, the spatial ergodic capacity and the deployment of SeNB are discussed. First, the interfering users are modeled as a spatial Poisson point process (SPPP), and the statistic characteristics of uplink signal to interference ratio (SIR) are analyzed with the consideration of multi-antenna and small-scale fading characteristics of wireless channels. Then, the queuing theory is adopted to analyze the constrains between the spatial traffic loads and the transmission and computation capabilities of SeNBs and MEC servers. Numerical results verify the theoretical analysis and show the convergency trends of the spatial ergodic capacity. The example of the SeNB deployment design is also given by numerical simulations. |
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