Call signalling protocols and media stream packetization for packet based multimedia communications systems 基于包的多媒體通信系統(tǒng)上的呼叫信令協(xié)議及媒體流打包技術(shù)
With internet growing more and more fast and getting widely used , packetization based on ip has become the main trend of the evolution of telecommunication networks , and voip technology is being developed very rapidly 互聯(lián)網(wǎng)速度越來(lái)越快,覆蓋范圍越來(lái)越廣,以ip為核心的分組化已成為電信網(wǎng)絡(luò)演進(jìn)的主流方向, voip技術(shù)正在經(jīng)歷前所未有的迅速發(fā)展。
Then it puts forward an end - to - end transport architecture based on rtp for mpeg - 4 video streaming over the internet and studies the playload type and packetization algorithm of mpeg - 4 video bit - streams to achieve both efficiency and robustness for internet mpeg - 4 video 然后提出了基于rtp的mpeg - 4視頻傳輸模型,研究適合于mpeg - 4視頻傳輸?shù)膔tp載荷格式及組包算法,使傳輸同時(shí)具有高效性和丟包的魯棒性。
The main contributions of the thesis are : ( 1 ) we present an end - to - end transport architecture using the rtp / udp / ip protocol stack and employ an efficient and robust packetization algorithm for mpeg - 4 video bit - streams at the sync layer for internet transport . ( 2 ) we study the congestion control mechanism based on aimd algorithm , and make improvement in order to reduce the oscillation of transimition rate due to tremendous contrast of packet loss ratio caused by dynamical change of the network load 論文的主要貢獻(xiàn)在于:提出了基于rtp的mpeg - 4視頻傳輸模型并充分利用mpeg - 4的videoobjectplane ( vop )特性,采用適用于mpeg - 4視頻傳輸?shù)膔w載荷格式及組包算法,同時(shí)具有傳輸?shù)母咝院蛠G包的魯棒性。