本文選題：無線自組織　切入點(diǎn)：視頻傳輸　出處：《光通信研究》2014年06期 　論文類型：期刊論文

【摘要】：在Ad Hoc(無線自組織)網(wǎng)絡(luò)中進(jìn)行視頻傳輸時(shí),視頻流的丟包率是影響視頻傳輸質(zhì)量的關(guān)鍵參數(shù)。傳統(tǒng)的AODV(按需距離矢量)路由協(xié)議僅依據(jù)RREP(路由應(yīng)答)消息中的跳數(shù)等信息來進(jìn)行路由更新,容易導(dǎo)致網(wǎng)絡(luò)負(fù)載不均衡,增大了視頻幀的丟包率,造成視頻畫面不清晰。文章提出的V-AODV(用于視頻傳輸?shù)陌葱杈嚯x矢量)協(xié)議依據(jù)V-RREP(用于視頻傳輸?shù)穆酚蓱?yīng)答)包中負(fù)載狀態(tài)信息和跳數(shù)信息來進(jìn)行路由選擇,避開了負(fù)載較重的節(jié)點(diǎn),使得整個(gè)視頻網(wǎng)絡(luò)負(fù)載均衡。通過NS2(網(wǎng)絡(luò)模擬器)分別對(duì)V-AODV和AODV協(xié)議下的視頻流傳輸進(jìn)行了仿真對(duì)比,結(jié)果表明,V-AODV協(xié)議降低了視頻幀的丟失率,有效地解決了視頻傳輸中的負(fù)載均衡問題。
[Abstract]:When video is transmitted in an ad hoc (wireless ad hoc) network, The packet loss rate of video stream is the key parameter affecting the quality of video transmission. The traditional AODV routing protocol only updates the network load according to the number of hops in the RREP (routing response) message. Increases the packet loss rate of video frames, The proposed V-AODV (on-demand distance vector for video transmission) protocol is based on the load state information and hops information in the V-RREP packet for video transmission. By avoiding the heavy load nodes and balancing the load of the whole video network, the video stream transmission under V-AODV and AODV protocol is simulated and compared by NS2. The results show that the V-AODV protocol reduces the loss rate of video frames, and the simulation results show that the VAODV protocol can reduce the loss rate of video frames, and the simulation results show that the VAODV protocol can reduce the loss rate of video frames. The problem of load balancing in video transmission is solved effectively.
【作者單位】： 西安郵電大學(xué);
【基金】：陜西省工業(yè)攻關(guān)項(xiàng)目(2012NKC01-15) 陜西省教育廳2012年服務(wù)地方專項(xiàng)(產(chǎn)業(yè)化培育)項(xiàng)目(2012JC22)
【分類號(hào)】：TN929.5

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本文編號(hào)：1606636