利用 QUIC 中的流调度:无线连接情况下的性能评估

IF 4.4 3区 计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS
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引用次数: 0

摘要

无线技术的出现促使为终端用户开发新的服务,并提出了严格的需求和要求。高可用性、极高吞吐量、低延迟和可靠性都是至关重要的性能参数。为满足这些需求,非地面网络或毫米波(mmWave)等新兴技术正被纳入 5G 和超越 5G(B5G)技术规范。毫米波可实现海量数据传输,但传播环境更为恶劣,是高频段的典型特征。因此,物理信道固有的不稳定性会严重影响协议栈的上层,导致拥塞和数据丢失,从而严重影响整体通信性能。这些挑战不仅可以在链路层解决,也可以在任何受影响的层上解决。QUIC 是一种新的传输协议,旨在以多种方式减少通信延迟。除其他功能外,它还能使用多数据流来有效管理通过其底层 UDP 套接字发送的数据流。本文介绍了基于优先级的流调度器的实现方法以及灵活接口的设计。利用所提出的方法,应用程序能够设置所需的调度方案以及流优先级。通过广泛的实验活动,结合 Docker 容器、ns-3 模拟器和 Mahimahi 框架,验证了所提方法的可行性。结果表明,在不可靠的条件下,适当的流调度器确实可以将时间敏感型应用的延迟降低 36%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Exploiting stream scheduling in QUIC: Performance assessment over wireless connectivity scenarios

Exploiting stream scheduling in QUIC: Performance assessment over wireless connectivity scenarios

The advent of wireless technologies has led to the development of novel services for end-users, with stringent needs and requirements. High availability, very high throughput, low latency, and reliability are all of them crucial performance parameters. To address these demands, emerging technologies, such as non-terrestrial networks or millimeter wave (mmWave), are being included in 5G and Beyond 5G (B5G) specifications. mmWave enables massive data transmissions, at the expense of a more hostile propagation, typical for high frequency bands. Consequently, the inherent instability of the physical channel significantly affects the upper layers of the protocol stack, resulting in congestion and data losses, which might strongly hinder the overall communication performance. These challenges can be addressed not only at the link layer, but at any affected layer. QUIC is a new transport protocol designed to reduce communications latency in many ways. Among other features, it enables the use of multiple streams to effectively manage data flows sent through its underlying UDP socket. This paper introduces an implementation of priority-based stream schedulers along with the design of a flexible interface. Exploiting the proposed approach, applications are able to set the required scheduling scheme, as well as the stream priorities. The feasibility of the proposed approach is validated through an extensive experiment campaign, which combines Docker containers, the ns-3 simulator and the Mahimahi framework, which is exploited to introduce realistic mmWave channel traces. The results evince that an appropriate stream scheduler can indeed yield lower delays for time-sensitive applications by up to 36% under unreliable conditions.

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来源期刊
Ad Hoc Networks
Ad Hoc Networks 工程技术-电信学
CiteScore
10.20
自引率
4.20%
发文量
131
审稿时长
4.8 months
期刊介绍: The Ad Hoc Networks is an international and archival journal providing a publication vehicle for complete coverage of all topics of interest to those involved in ad hoc and sensor networking areas. The Ad Hoc Networks considers original, high quality and unpublished contributions addressing all aspects of ad hoc and sensor networks. Specific areas of interest include, but are not limited to: Mobile and Wireless Ad Hoc Networks Sensor Networks Wireless Local and Personal Area Networks Home Networks Ad Hoc Networks of Autonomous Intelligent Systems Novel Architectures for Ad Hoc and Sensor Networks Self-organizing Network Architectures and Protocols Transport Layer Protocols Routing protocols (unicast, multicast, geocast, etc.) Media Access Control Techniques Error Control Schemes Power-Aware, Low-Power and Energy-Efficient Designs Synchronization and Scheduling Issues Mobility Management Mobility-Tolerant Communication Protocols Location Tracking and Location-based Services Resource and Information Management Security and Fault-Tolerance Issues Hardware and Software Platforms, Systems, and Testbeds Experimental and Prototype Results Quality-of-Service Issues Cross-Layer Interactions Scalability Issues Performance Analysis and Simulation of Protocols.
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