Modelling of synchronisation and energy performance of FBE- and LBE-based standalone LTE-U networks
Modelling of synchronisation and energy performance of FBE- and LBE-based standalone LTE-U networks
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DOI：
10.1049/joe.2017.0039
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发表时间：
2017-06
影响因子：
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通讯作者：
Liu Jiamin;Hangguan Shan;Aiping Huang;Jiantao Yuan;Lin X. Cai
中科院分区：
文献类型：
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作者：
Liu Jiamin;Hangguan Shan;Aiping Huang;Jiantao Yuan;Lin X. Cai
在没有授权信道的情况下，在非授权频谱上部署长期演进(LTE)网络(称为独立LTE-U网络)面临着在用户设备和基站之间建立和维护同步的困难。在这项工作中，考虑到基于先听后说的信道接入方案的两种模式，基于帧的设备(FBE)和基于负载的设备(LBE)，作者提出了分析框架来研究独立LTE-U网络中的同步成功概率和同步的能量消耗。具体来说，对于LBE模式，作者还提出了一种基于格子-泊松算法的方法来推导独立LTE-U网络的信道非占用周期分布。此外，作者还探讨了FBE和LBE两种模式的不同协议参数对这两种性能指标的影响。仿真结果验证了分析的准确性，并从独立LTE-U和Wi-Fi网络的同步性、能耗和吞吐量方面为独立LTE-U网络选择FBE和LBE提供了一些参考。
Without the aid of licensed channel, deploying long-term evolution (LTE) networks over unlicensed spectrum (named standalone LTE-U networks) faces the difficulty of establishing and maintaining synchronisation between user equipments and base stations. In this work, considering the two modes of listen-before-talk-based channel access scheme, frame-based equipment (FBE) and load-based equipment (LBE), the authors propose analytical frameworks to study the successful probability of synchronisation and the energy consumption of synchronisation in a standalone LTE-U network. Specifically, for the LBE mode, the authors also propose a Lattice-Poisson algorithm-based approach to derive the distribution of the channel non-occupancy period of a standalone LTE-U network. Furthermore, the authors explore the impact of diverse protocol parameters of both FBE and LBE modes on the two studied performance metrics. Simulation results demonstrate the accuracy of the analysis, and shed some light on the selection of FBE and LBE for standalone LTE-U networks, in terms of synchronisation, energy consumption, and throughput of standalone LTE-U and Wi-Fi networks.