NDN-MMRA: Multi-Stage Multicast Rate Adaptation in Named Data Networking WLAN
NDN-MMRA: Multi-Stage Multicast Rate Adaptation in Named Data Networking WLAN
复制标题
NDN-MMRA：命名数据网络WLAN中的多阶段组播速率自适应
DOI：
10.1109/tmm.2020.3023282
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发表时间：
2021-01-01
影响因子：
7.3
通讯作者：
Shen, Xuemin
中科院分区：
文献类型：
--
作者：
Wu, Fan;Yang, Wang;Shen, Xuemin
命名数据网络(NDN)被认为是未来无线局域网(WLAN)的重要体系结构，而组播在媒体流、多点视频会议等数据传输中起着重要的作用。然而，在NDN无线局域网中实现高效的组播是具有挑战性的，原因有二。首先，802.11标准中没有反馈机制，为了保证可靠性，当前的组播方案使用基本速率(例如IEEE802.11b为1 Mbps)来传输组播数据，这不可避免地增加了高速用户的传输时延。其次，由于NDN组播组是由请求相同内容的用户组成的，因此组播组易于形成和快速演化，其中需要一种数据速率适配方案来适应不同的组播组。本文提出了一种基于NDN无线局域网的多级组播速率自适应方案NDN-MMRA，在保证组播成员可靠性的前提下最小化组播的总传输时间。在NDN-MMRA中，通过检查待定兴趣表(PIT)状态信息，预先知道每个多播组中的用户数量以及他们的接收能力；利用特定802.11标准中的可用数据速率，NDN-MMRA确定：1)需要多少个传输阶段；以及2)在每个阶段，应该采用哪种数据速率。其优点是，在多级传输的情况下，数据速率可以降序调整，以适应延迟最小的高速消费者，并在保证可靠性的情况下适应低速消费者。我们采用ndnSIM模块在NS-3中实现了NDN-MMRA，并进行了大量的实验，以验证其在不同的IEEE 802.11标准和各种底层无线局域网拓扑结构下的有效性。
Named Data Networking (NDN) is considered as a prominent architecture towards future Wireless Local Area Networks (WLAN), and multicast plays an important role in data delivery such as media streaming, multipoint videoconferencing, etc. However, to achieve high-efficiency multicast in NDN WLAN is challenging for two significant reasons. First, without feedback mechanism in IEEE 802.11 standards, to guarantee reliability, the current multicast scheme transmits the multicast data with the basic rate (e.g., 1 Mbps for IEEE 802.11b), which inevitably increases the transmission delay for high-speed consumers. Second, as a NDN multicast group is constituted by consumers who are requesting the same content, multicast groups are easy to form and evolve rapidly, where a data rate adaptation scheme is requisite to accommodate differential multicast groups. In this paper, we propose a multi-stage multicast rate adaptation scheme for NDN WLAN, named NDN-MMRA, to minimize the total transmission time with reliability guarantee for multicast group members. In NDN-MMRA, by checking the Pending Interest Table (PIT) status information, the number of consumers in each multicast group as well as their receiving capabilities are known ahead; with the available data rates in a specific 802.11 standard, NDN-MMRA determines: 1) how many transmission stages are required; and 2) in each stage, which data rate should be adopted. The merit is that with multi-stage transmissions, the data rate can be adapted in descending order to accommodate high-speed consumers with delay minimized, and low-speed consumers with reliability guaranteed. We implement NDN-MMRA in NS-3 by adopting the ndnSIM module, and conduct extensive experiments to demonstrate its efficacy under different IEEE 802.11 standards and various underlying WLAN topologies.