本文選題：Wi　切入點(diǎn)：Fi網(wǎng)絡(luò)　出處：《實(shí)驗(yàn)室研究與探索》2016年10期

【摘要】：Wi Fi網(wǎng)絡(luò)下的視頻多播傳輸問題是目前的研究熱點(diǎn),針對(duì)當(dāng)前視頻多播傳輸方案使得處于區(qū)域邊界處的用戶享受到的服務(wù)質(zhì)量較低、可靠性差這一不足,提出一種基于多訪問點(diǎn)(AP)協(xié)作的視頻多播可靠傳輸方案。通過在多個(gè)AP間展開協(xié)作,每個(gè)AP可傳輸完全不同或部分不同的FEC編碼報(bào)文,多播接收器利用空間和時(shí)間分集來提升性能。此外,我們還提出一種支持FEC碼率自適應(yīng)的資源分配算法,有效地提高了有限無線資源的利用率和視頻質(zhì)量。最后,通過全面的仿真實(shí)驗(yàn)評(píng)估了本文算法的有效性,與傳統(tǒng)的單AP點(diǎn)多播算法相比,本文算法使用戶滿意率提升了37.1%。
[Abstract]:The problem of video multicast transmission in Wi Fi network is a hot research topic at present. The current video multicast transmission scheme makes users at the regional boundary enjoy low quality of service and poor reliability. A reliable video multicast transmission scheme based on multi-access point (AP) collaboration is proposed. Each AP can transmit completely different or partially different FEC encoded packets by cooperating among multiple APs. Multicast receivers use space and time diversity to improve performance. In addition, we propose a resource allocation algorithm that supports FEC rate adaptation, which effectively improves the utilization of limited wireless resources and video quality. The effectiveness of the proposed algorithm is evaluated by a comprehensive simulation experiment. Compared with the traditional single AP multicast algorithm, the proposed algorithm improves the user satisfaction rate by 37.1%.
【作者單位】： 武昌工學(xué)院信息工程學(xué)院;
【分類號(hào)】：TN919.8;TN92
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本文編號(hào)：1697737