基于多径DCCP的不可靠Internet业务多址接入支持框架
A Framework for Multiaccess Support for Unreliable Internet Traffic using Multipath DCCP
摘要：
移动节点通常配备有多个无线电，并且可以连接到多个无线电接入网络（例如，WiFi、LTE和5G）。因此，重要的是设计有效地管理多个网络接口的机制，用于聚合容量、引导业务流或在多个接口之间切换流。虽然这样的多址解决方案具有增加总体业务吞吐量和通信可靠性的潜力，但是不同接入链路上的可变时延引入了分组时延变化，这对应用服务质量和用户体验质量具有负面影响。在本文中，我们提出了一个新的IP兼容的多路径框架异构接入网络。该框架使用多路径数据报拥塞控制协议（MP-DCCP）（常规DCCP的一组扩展）来使传输连接能够同时跨多个接入网络操作。我们提出了新的协议框架的设计，并显示模拟和实验测试床的结果，（1）演示了新的框架的操作，（2）展示了我们的解决方案的能力，管理显着的数据包延迟变化所造成的网络路径的不对称性，通过应用可插拔的数据包调度或重新排序算法。
英文摘要：
Mobile nodes are typically equipped with multiple radios and can connect to multiple radio access networks (e.g. WiFi, LTE and 5G). Consequently, it is important to design mechanisms that efficiently manage multiple network interfaces for aggregating the capacity, steering of traffic flows or switching flows among multiple interfaces. While such multi-access solutions have the potential to increase the overall traffic throughput and communication reliability, the variable latencies on different access links introduce packet delay variation which has negative effect on the application quality of service and user quality of experience. In this paper, we present a new IP-compatible multipath framework for heterogeneous access networks. The framework uses Multipath Datagram Congestion Control Protocol (MP-DCCP) - a set of extensions to regular DCCP - to enable a transport connection to operate across multiple access networks, simultaneously. We present the design of the new protocol framework and show simulation and experimental testbed results that (1) demonstrate the operation of the new framework, and (2) demonstrate the ability of our solution to manage significant packet delay variation caused by the asymmetry of network paths, by applying pluggable packet scheduling or reordering algorithms.
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