论文标题
多层超密集网络的基站协调方案
Base Station Coordination Scheme for Multi-tier Ultra-dense Networks
论文作者
论文摘要
在本文中，我们考虑了多层超密集网络（UDN）中基于相对接收的链路功率（RRLP）的协调多点（COMP）关节传输（JT）。在此Comp方案中，我们通过将相邻BSS的平均接收到接收到的链路功率（ARLP）与具有最强ARLP（即主链接BS）与用户进行比较，从而确定了合作的基站（BSS）。为了在下行链路多层UDN中分析此COMP方案的性能，我们首先近似接收的信号电源分布，并使用随机几何形状得出覆盖率。在重新审视面积光谱效率（ASE）以使其更适合于UDN中的COMP传输后，我们还分析了ASE和网络能效效率（NEE）。使用仿真，我们验证了派生的覆盖率概率，并研究了多层UDN中的COMP性能。我们的模拟表明，基于RRLP的COMP方案可以胜过高BS密度制度中最强的基于BS的COMP方案的固定数量。我们对NEE性能的研究表明，不仅基于RRLP的COMP方案比常规的非竞争传输方案更有效，而且其NEE性能随着合作BSS的平均数量而提高。
In this paper, we consider a relative received link power (RRLP)-based coordinated multi-point (CoMP) joint transmission (JT) in the multi-tier ultra-dense networks (UDN). In this CoMP scheme, we identify the cooperating base stations (BSs) by comparing the average received link power (ARLP) of the neighbouring BSs with respect to the BS having the strongest ARLP (i.e., the main link BS) to a user. To analyze the performance of this CoMP scheme in the downlink multi-tier UDN, we first approximate the received signal power distribution, and derive the coverage probability using stochastic geometry. After revisiting the area spectral efficiency (ASE) to make it more suitable for CoMP transmission in UDN, we also analyze the ASE and the network energy efficiency (NEE). Using simulations, we validate the derived coverage probability, and investigate the CoMP performance in multi-tier UDN. Our simulations show that the RRLP-based CoMP scheme can outperform the fixed number of strongest BS-based CoMP scheme in the high BS density regime. Our study of the NEE performance reveals that not only the RRLP-based CoMP scheme is more efficient than conventional non-CoMP transmission scenario, but also its NEE performance improves with the average number of cooperating BSs.
