论文标题
基于QoS的数据包调度算法，用于异质LTE高级网络，概念和文献调查
QoS-based Packet Scheduling Algorithms for Heterogeneous LTE-Advanced Networks, Concepts and a Literature Survey
论文作者
论文摘要
在过去的十年中，LTE用户及其应用程序的数量大大增加，这增加了移动网络的需求。 LTE促进的带有许多可以支持这一需求不断增长的功能。 LTE高级支持支持异质网络的部署，其中由宏观电池，远程无线电头和低功率节点（例如Pico-cells和femto-cells）组成。将这种基础站的组合嵌入到宏观细胞网络中，与仅使用宏观细胞相比，可以在覆盖范围，吞吐量和系统容量方面取得显着增长。这些基站可以在与宏观细胞网络相同的无线通道上运行，该网络将通过细胞分裂提供更高的空间重复使用。此外，它允许网络运营商通过将其卸载到较小的单元格（例如FEMTO细胞）来支持更高的数据流量。因此，它使网络运营商能够为越来越多的用户提供满足其服务需求的所需服务质量。网络运营商的订购序列使其从异质LTE高级网络中获得最佳状态，他们需要使用基于QoS的数据包调度算法，这些算法可以有效地管理异质部署中的光谱资源。在本文中，我们调查了基于服务的数据包调度算法的质量，这些算法是在文献中提出的，旨在在异质LTE吸引力网络中使用数据包调度。我们首先解释LTE中QoS的概念，异质LTE高级网络以及如何在非均质LTE吸引力网络的数据包计划体系结构中分类流量。然后，通过总结有关异质LTE高级网络的文献中提出的基于QoS的数据包调度算法，以及femtocells lte-Advanced网络。最后，我们在上一节中提供了一些结论性的评论。
The number of LTE users and their applications has increased significantly in the last decade, which increased the demand on the mobile network. LTE-Advanced comes with many features that can support this increasing demand. LTE-Advanced supports Heterogeneous Networks deployment, in which it consists of a mix of macro-cells, remote radio heads, and low power nodes such as Pico-cells, and Femto-cells. Embedding this mix of base-stations in a macro-cellular network allows for achieving significant gains in coverage, throughput and system capacity compared to the use of macro-cells only. These base-stations can operate on the same wireless channel as the macro-cellular network, which will provide higher spatial reuse via cell splitting. Also, it allows network operators to support higher data traffic by offloading it to smaller cells, such as Femto-cells. Hence, it enables network operators to provide their growing number of users with the required Quality of Service that meets with their service demands. In-order for the network operators to make the best out of the heterogeneous LTE-Advanced network, they need to use QoS-based packet scheduling algorithms that can efficiently manage the spectrum resources in the heterogeneous deployment. In this paper, we survey Quality of Service based packet scheduling algorithms that were proposed in the literature for the use of packet scheduling in Heterogeneous LTE-Advanced Networks. We start by explaining the concepts of QoS in LTE, heterogeneous LTE-Advanced networks, and how traffic is classified within a packet scheduling architecture for heterogeneous LTE-Advanced networks. Then, by summarising the proposed QoS-based packet scheduling algorithms in the literature for heterogeneous LTE-Advanced Networks, and for Femtocells LTE-Advanced Networks. And finally, we provide some concluding remarks in the last section.
