Cross-layer mechanism for efficient video transmission over mobile ad hoc networks

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-30 DOI:10.1109/IWCLD.2011.6123074

George Adam, Christos Bouras, A. Gkamas, V. Kapoulas, Georgios Kioumourtzis, Nikos Tavoularis

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引用次数: 6

Abstract

Mobile ad hoc networks (MANETs) are becoming more essential to wireless communications due to growing popularity of mobile devices. However, MANETs do not seem to effectively support multimedia applications and especially video transmission. This paper presents a cross-layer mechanism for efficient video transmission over this type of networks. The proposed mechanism consists of a priority-scheduling algorithm, at the network layer, and the use of the IEEE 802.11e standard at the MAC layer. The priority-scheduling algorithm takes into account the frame type of the MPEG-4 video file in order to provide different priorities to the most important video packets. At the MAC layer, the IEEE 802.11e protocol assigns the highest priority to video applications to reduce delay and packets losses due to other competing traffic. This design is easily implemented in any ad hoc wireless network as an extension on the AODV MANET routing protocol. Simulation results conducted with the network simulator ns-2 show the advantages of the proposed design.

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在移动自组织网络上高效视频传输的跨层机制

由于移动设备的日益普及，移动自组织网络(manet)在无线通信中变得越来越重要。然而，manet似乎不能有效地支持多媒体应用，特别是视频传输。本文提出了一种跨层的高效视频传输机制。该机制在网络层采用优先级调度算法，在MAC层采用IEEE 802.11e标准。优先级调度算法考虑了MPEG-4视频文件的帧类型，以便为最重要的视频数据包提供不同的优先级。在MAC层，IEEE 802.11e协议为视频应用分配了最高优先级，以减少由于其他竞争流量造成的延迟和数据包丢失。作为AODV - MANET路由协议的扩展，这种设计很容易在任何自组织无线网络中实现。利用网络模拟器ns-2进行的仿真结果表明了所提设计的优越性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2011 Third International Workshop on Cross Layer Design

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