Efficient Live Video Streaming for Wireless Multihop Networks
Başlık:
Efficient Live Video Streaming for Wireless Multihop Networks
Yazar:
Zhang, Bo, author.
ISBN:
9780438131545
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (137 pages)
Genel Not:
Source: Masters Abstracts International, Volume: 57-06M(E).
Özet:
With advances in networking, storage and processing capabilities, mobile devices can now share videos with each other. In this thesis, we study how to achieve efficient live streaming among cooperative wireless devices. In such a mobile peer-to-peer (P2P) streaming network, mobile stations (MSs) relay their received packets in a multi-hop manner by means of broadcasting using a secondary channel (such as Wi-Fi or Bluetooth). Such network greatly increases network scalability by multiplying its available bandwidth, extends its coverage and improves its recovery efficiency.
The design of the broadcast overlay is crucial to streaming efficiency in terms of achievable streaming rate. We hence first propose a novel overlay called LocalTree which seeks to minimize the total network traffic while covering all the clients. LocalTree takes advantage of stable clusters of MSs to construct streaming overlay. It combines the strengths of both structured and unstructured overlay designs, and is simple and effective.
We next investigate live free viewpoint video (FVV) streaming in a wireless cooperative multihop network. An FVV is composed of a large number of camera-captured anchor views, with virtual views (not captured by any camera) rendered from their nearby anchors using techniques such as depth-image-based rendering (DIBR). Given limited wireless bandwidth at the MSs, we seek to maximize the received video quality (i.e., minimize distortion). We propose a distributed algorithm called PAFV (Peer-Assisted Freeview Video), which achieves scalability and high video quality.
Packet loss is inevitable in wireless video streaming due to dynamic channel condition. To address this, we finally study P2P cooperative error recovery for video broadcasting. In our system, an MS may generate some parity packets and share them to its neighbors. An important problem is to minimize the total number of parity packets generated while achieving a certain residual loss rate. We propose BOPPER (Broadcast-based P2P Error Recovery), a novel and fully distributed algorithm to achieve low residual loss.
Notlar:
School code: 1223
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(696853.1) | 696853-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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