For the deployment of high bandwidt

For the deployment of high bandwidth operational real-time streaming media application on campus network, problems that affect the quality of real-time streaming media should be considered, such as bandwidth, delay, safety and mass data distribution ability. Low bandwidth streaming media technology that based on unicast or on-demand has developed very rapidly in recent years and became a focus of the concern of the academia and industry; Because of the technical and deployment difficulty, the IP multicast based real-time streaming media technology progressed slowly. With the increase of image resolution and single way streaming media network bandwidth occupation, the deployment and application become more difficult.This paper studies real-time streaming media data compression, data distribution ability, user expansion ability, data security transmission, and other key issues under high bandwidth and large data quantity conditions. Based on the IP multicast environment that build on Lanzhou university campus network. This paper studies key problems in high bandwidth (>20MBPS) multicast real-time streaming media application, promotes the development and popularization of large-scale streaming media application.This paper made the following achievements:1) A mathematical model of campus network according to its characteristics is proposed, and the performance index and test standards of the model is analized; The transmission and network characteristics of100G Ethernet technology are introduced and studied, the campus network data center, virtualization and cloud computing problem are also researchd; At the end OpenFlow deployment and practice in campus network and other related problems are discussed.2) Scalability of streaming media transmission, deployment of campus network IP multicast and IP multicast routing are studied. The multicast data delay problems that influence the real-time streaming media is measured on campus network, and the reason why different bandwidth conditions lead to different delay is analized.3) The related technologies of high bandwidth real-time streaming media are studied The transmission mode and transfer protocol are introduced. High bandwidth streaming media compression coding techniques are studied. Real-time streaming media decoding performance under the condition of high bandwidth is discussed.4) At last the security problem of high bandwidth real-time streaming media is studied: Symmetric encryption algorithm and asymmetric encryption algorithm combined encryption algorithm and broadcast encryption algorithm for high bandwidth flow media was studied respectively. Direct encryption and part encryption method are put forward according to the different encryption system. Encryption efficiency and computational resources consumption problem are studied. A new encryption scheme is put forward for high bandwidth real-time streaming media broadcast encryption, and the correctness and security of the new scheme are proved.
Keywords/Search Tags: campus network model, overlay IP multicast, high bandwidth real-time streamingmedia, secure transmission, broadcast encryption
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Hasil (Bahasa Indonesia) 1:

Untuk penggunaan bandwidth tinggi operasional real-time streaming media aplikasi pada jaringan kampus, masalah yang mempengaruhi kualitas real-time streaming media harus dipertimbangkan, seperti bandwidth, penundaan, keselamatan dan kemampuan distribusi data massal. Bandwidth rendah streaming media teknologi yang berdasarkan unicast atau berdasarkan permintaan telah berkembang sangat pesat dalam beberapa tahun terakhir dan menjadi fokus perhatian dari akademisi dan industri; Karena kesulitan teknis dan penyebaran, IP multicast berbasis real-time streaming media teknologi berkembang perlahan-lahan. Dengan peningkatan resolusi gambar dan cara streaming media jaringan bandwidth pendudukan, penyebaran dan aplikasi menjadi lebih sulit.Ini kertas studi real-time streaming media kompresi data, data distribusi kemampuan, pengguna perluasan kemampuan, transmisi data keamanan dan masalah utama lain di bawah bandwidth tinggi dan kondisi jumlah data yang besar. Berdasarkan IP multicast lingkungan yang membangun jaringan kampus Universitas Lanzhou. Ini kertas studi kunci masalah di bandwidth tinggi (> 20MBPS) multicast real-time streaming aplikasi media, mendorong pembangunan dan popularisasi skala besar aplikasi media streaming.Karya ini dibuat prestasi yang berikut: 1) model matematis jaringan kampus sesuai karakteristik yang diusulkan, dan kinerja indeks dan tes standar model analized; Transmisi dan jaringan karakteristik of100G teknologi Ethernet diperkenalkan dan belajar, pusat data jaringan kampus, virtualisasi dan masalah komputasi awan yang juga researchd; Pada akhir Sambirejo penyebaran dan praktek dalam jaringan kampus dan lainnya terkait masalah yang discussed.2) skalabilitas streaming media transmisi, penggunaan kampus jaringan IP multicast dan IP multicast routing dipelajari. Multicast data menunda masalah yang mempengaruhi real-time streaming media diukur pada jaringan kampus, dan alasan mengapa bandwitdh kondisi menyebabkan penundaan yang berbeda adalah analized.3) teknologi yang terkait dari bandwidth tinggi media streaming real-time dipelajari protokol modus dan transfer transmisi diperkenalkan. Media streaming bandwidth tinggi kompresi teknik pengkodean dipelajari. Real-Time streaming media decoding kinerja di bawah kondisi bandwidth tinggi adalah discussed.4) akhirnya masalah keamanan bandwidth tinggi media streaming real-time dipelajari: algoritma enkripsi simetris dan algoritma enkripsi asimetris dikombinasikan algoritma enkripsi dan algoritma enkripsi siaran untuk bandwidth tinggi media aliran dipelajari masing-masing. Enkripsi langsung dan metode enkripsi bagian diajukan sesuai dengan sistem enkripsi yang berbeda. Enkripsi efisiensi dan masalah konsumsi sumber daya komputasi dipelajari. Skema enkripsi baru yang diajukan untuk bandwidth tinggi real-time streaming media siaran enkripsi, dan ketepatan dan keamanan skema baru terbukti.Kata kunci pencarian Tags: model jaringan kampus, tampilan IP multicast, tinggi bandwidth real-time streamingmedia, transmisi yang aman, disiarkan enkripsiItem terkaitPenelitian 1 transmisi enkripsi Bandwidth tinggi Real-Time Streaming Media2 berbasis teknologi kunci jaringan Multicast Overlay transmisi Video3 penelitian pada skema-skema perjanjian kunci untuk aman Multicast4 pemutar Media streaming dalam jaringan subsistem desain dan implementasi,5 penelitian pada teknologi kunci Real-time Transport Media Streaming di Internet6 desain dan implementasi Real-time jaringan kelas7 penelitian teknologi Multicast level aplikasi jaringan Overlay8 penelitian pada skema siaran Encrytion9 sistem transmisi suara aman dan Real-time: Desain dan implementasi10 menerapkan penelitian teknologi enkripsi dinamis dalam transmisi HDTV berdasarkan Multicast jaringan kampus