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QoS-Aware Downlink Traffic Scheduling for Cellular Networks with Dual Connectivity
Electronics ( IF 2.9 ) Pub Date : 2022-09-27 , DOI: 10.3390/electronics11193085
Haoru Su , Meng-Shiuan Pan , Hung-Wei Mai

In a cellular network, how to preserve users’ quality of service (QoS) demands is an important issue. To provide better data services, researchers and industry have discussed the deployment of small cells in cellular networks to support dual connectivity enhancement for user equipments (UEs). By such an enhancement, a base station can dispatch downlink data to its surrounding small cells, and UEs that are located in the overlapping areas of the base station and small cells can receive downlink data from both sides simultaneously. We observe that previous works do not jointly consider QoS requirements and system capabilities when making scheduling decisions. Therefore, in this work, we design a QoS traffic scheduling scheme for dual connectivity networks. The designed scheme contains two parts. First, we propose a data dispatching decision scheme for the base station to decide how much data should be dispatched to small cells. When making a dispatching decision, the proposed scheme aims to maximize throughput and ensure that data flows can be processed in time. Second, we design a radio resource scheduling method, which aims to reduce dropping ratios of high-priority QoS data flows, while avoiding wasting radio resources. In this work, we verify our design using simulation programs. The experimental results show that compared to the existing methods, the proposed scheme can effectively increase system throughput and decrease packet drop ratios.

中文翻译:

具有双连接性的蜂窝网络的 QoS 感知下行链路流量调度

在蜂窝网络中,如何保持用户的服务质量(QoS)需求是一个重要问题。为了提供更好的数据服务,研究人员和行业已经讨论了在蜂窝网络中部署小型蜂窝以支持用户设备 (UE) 的双连接增强。通过这样的增强,基站可以向其周围的小小区发送下行数据,并且位于基站和小小区重叠区域的UE可以同时接收来自两侧的下行数据。我们观察到,以前的工作在制定调度决策时没有共同考虑 QoS 要求和系统能力。因此,在这项工作中,我们设计了一种用于双连接网络的 QoS 流量调度方案。设计方案包含两部分。第一的,我们为基站提出了一种数据调度决策方案,以决定应该向小小区调度多少数据。在做出调度决策时,所提出的方案旨在最大化吞吐量并确保数据流能够得到及时处理。其次,我们设计了一种无线资源调度方法,旨在减少高优先级QoS数据流的丢弃率,同时避免浪费无线资源。在这项工作中,我们使用仿真程序验证我们的设计。实验结果表明,与现有方法相比,所提方案能够有效提高系统吞吐量,降低丢包率。所提出的方案旨在最大化吞吐量并确保数据流能够得到及时处理。其次,我们设计了一种无线资源调度方法,旨在减少高优先级QoS数据流的丢弃率,同时避免浪费无线资源。在这项工作中,我们使用仿真程序验证我们的设计。实验结果表明,与现有方法相比,所提方案能够有效提高系统吞吐量,降低丢包率。所提出的方案旨在最大化吞吐量并确保数据流能够得到及时处理。其次,我们设计了一种无线资源调度方法,旨在减少高优先级QoS数据流的丢弃率,同时避免浪费无线资源。在这项工作中,我们使用仿真程序验证我们的设计。实验结果表明,与现有方法相比,所提方案能够有效提高系统吞吐量,降低丢包率。
更新日期:2022-09-27
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