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提出一种在车辆自组织网络(VANET)中应用的无线多跳视频传输实验系统的设计和实现方案及其对应的传输控制和路由选择协议.该系统将嵌入式Linux与IEEE 802.11n传输协议集成到ARM内核,由S3C6410主控模块、无线局域网网卡及LCD屏等构成.针对VANET的无线多跳视频传输场景,对视频编译码分别采用H.264和JPEG两种标准实现并对它们的压缩比、时延、传输丢包率等性能进行了理论分析和实验比较,进行了室内室外多种不同场景的实际测试.结果表明:所设计的多跳视频传输实验系统方案能够适应VANET等多种场景的应用,所提出的传输控制和路由选择协议能够保证视频传输的多跳和实时性要求.
This paper presents a design and implementation scheme of wireless multi-hop video transmission experiment system applied in VANET and its corresponding transmission control and routing protocols.The system integrates embedded Linux with IEEE 802.11n transmission protocol To the ARM core by the S3C6410 main control module, wireless LAN card and LCD screen etc. For VANET wireless multi-hop video transmission scenarios, the video coding and decoding were implemented using H.264 and JPEG two standards and their compression ratio , Delay, transmission packet loss rate and other performance theoretical analysis and experimental comparison of a variety of indoor and outdoor scene of the actual test results show that: the multi-hop video transmission system designed to adapt to VANET and other scenarios The proposed transmission control and routing protocols can guarantee the multi-hop and real-time requirements of video transmission.