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Performance analysis of switching strategy in LTE-A heterogeneous networks

机译：LTE-A异构网络中交换策略的性能分析

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摘要

Nowadays, energy saving has become a hot topic and information and communication technology has become a major power consumer. In long term evolution advanced (LTE-A) networks, heterogeneous deployments of low-power nodes and conventional macrocells provide some new features, such as coverage extension, throughput enhancement, and load balancing. However, a large-scale deployment of low-power nodes brings substantial energy consumption and interference problems. In this paper, we propose a novel switching strategy (NS), which adaptively switches on or off some low-power nodes based on the instantaneous load of the system. It is compatible with the microcells' load balancing feature and can be easily implemented on the basis of existing LTE-A specifications. Moreover, we develop an analytical model for analyzing the performance of system energy consumption, block rate, throughput, and energy efficiency. The performance of NS is evaluated by comparison with existing strategies. Theoretical analysis and simulation results show that NS not only has a low block rate, but also achieves a high energy efficiency.
机译：如今，节能已成为热门话题，信息和通信技术已成为主要的电力消耗者。在长期演进高级（LTE-A）网络中，低功率节点和常规宏小区的异构部署提供了一些新功能，例如覆盖范围扩展，吞吐量增强和负载平衡。但是，大规模部署低功率节点会带来大量的能耗和干扰问题。在本文中，我们提出了一种新颖的切换策略（NS），该策略根据系统的瞬时负载自适应地打开或关闭一些低功耗节点。它与微蜂窝的负载平衡功能兼容，并且可以在现有LTE-A规范的基础上轻松实现。此外，我们开发了一个分析模型来分析系统能耗，阻塞率，吞吐量和能效的性能。通过与现有策略进行比较来评估NS的性能。理论分析和仿真结果表明，NS不仅阻塞率低，而且能效较高。

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