Cooperative ARQ protocol based on GOP and distance aware invideo sensor networks
视频传感器网络中基于GOP与距离感知的协作ARQ机制

There are two critical factors in cooperative communication of video sensor networks:relay selection and diversity of the quality of service guarantee of end to end communication. Therefore, this paper proposed the cooperative ARQ protocol based on GOP and distance aware. According to the physical characteristic of sensor node and the MPEG-4 encoding algorithm, it provided the mathematical analytical model of network station-aware, which was used to research the influence of video communication performance. It established a cooperative ARQ based on the awareness model, which was able to select the relay nodes adaptively and guarantee the diversity of the quality of service of video streaming. The mathematical analyses and simulation results show that the proposed mechanism can perform better in terms of video quality assessment, real time performance and energy efficiency, compared to the traditional ARQ and distance aware cooperative ARQ alone, with adapting to the fluctuation of the video sensor network state dynamically.