Int. J. Digit. Multim. Broadcast.最新文献_第7页

Bandwidth Management in Wireless Home Networks for IPTV Solutions 面向IPTV解决方案的无线家庭网络带宽管理

Int. J. Digit. Multim. Broadcast. Pub Date : 2013-03-05 DOI: 10.1155/2013/474212

Tamás Jursonovics, S. Imre

引用次数: 1

Client-Driven Joint Cache Management and Rate Adaptation for Dynamic Adaptive Streaming over HTTP 基于HTTP的动态自适应流的客户端驱动联合缓存管理和速率自适应

Int. J. Digit. Multim. Broadcast. Pub Date : 2013-02-27 DOI: 10.1155/2013/471683

Chenghao Liu, M. Hannuksela, M. Gabbouj

{"title":"Client-Driven Joint Cache Management and Rate Adaptation for Dynamic Adaptive Streaming over HTTP","authors":"Chenghao Liu, M. Hannuksela, M. Gabbouj","doi":"10.1155/2013/471683","DOIUrl":"https://doi.org/10.1155/2013/471683","url":null,"abstract":"Due to the fact that proxy-driven proxy cache management and the client-driven streaming solution of Dynamic Adaptive Streaming over HTTP (DASH) are two independent processes, some difficulties and challenges arise in media data management at the proxy cache and rate adaptation at the DASH client. This paper presents a novel client-driven joint proxy cache management and DASH rate adaptation method, named CLICRA, which moves prefetching intelligence from the proxy cache to the client. Based on the philosophy of CLICRA, this paper proposes a rate adaptation algorithm, which selects bitrates for the next media segments to be requested by using the predicted buffered media time in the client. CLICRA is realized by conveying information on the segments that are likely to be fetched subsequently to the proxy cache so that it can use the information for prefetching. Simulation results show that the proposed method outperforms the conventional segment-fetch-time-based rate adaptation and the proxy-driven proxy cache management significantly not only in streaming quality at the client but also in bandwidth and storage usage in proxy caches.","PeriodicalId":204253,"journal":{"name":"Int. J. Digit. Multim. Broadcast.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125638179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

PAPR Reduction of OFDM Signals by Novel Global Harmony Search in PTS Scheme PTS方案中新型全局和谐搜索降低OFDM信号PAPR

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-12-06 DOI: 10.1155/2012/940849

H. Salehinejad, S. Talebi

引用次数: 10

IPTV: Technology, Practice, and Service IPTV:技术、实践与服务

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-08-26 DOI: 10.1155/2012/734769

Hsiang-Fu Yu, Jen-Wen Ding, P. Ho, János Tapolcai

引用次数: 0

Background Traffic-Based Retransmission Algorithm for Multimedia Streaming Transfer over Concurrent Multipaths 基于后台流量的并发多路径多媒体流传输重传算法

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-08-13 DOI: 10.1155/2012/789579

Yuanlong Cao, Changqiao Xu, Jianfeng Guan, Hongke Zhang

引用次数: 9

Secure and Reliable IPTV Multimedia Transmission Using Forward Error Correction 采用前向纠错的IPTV多媒体传输安全可靠

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-07-08 DOI: 10.1155/2012/720791

C. Shih, Yeong Y. Xu, Yaohui Wang

引用次数: 6

Automatic Story Segmentation for TV News Video Using Multiple Modalities 基于多模态的电视新闻视频故事自动分割

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-07-05 DOI: 10.1155/2012/732514

Emilie Dumont, G. Quénot

引用次数: 31

QoS Supported IPTV Service Architecture over Hybrid-Tree-Based Explicit Routed Multicast Network 基于混合树的显式路由组播网络的QoS支持IPTV业务架构

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-07-03 DOI: 10.1155/2012/263470

Chih-Chao Wen, Cheng-Shong Wu

{"title":"QoS Supported IPTV Service Architecture over Hybrid-Tree-Based Explicit Routed Multicast Network","authors":"Chih-Chao Wen, Cheng-Shong Wu","doi":"10.1155/2012/263470","DOIUrl":"https://doi.org/10.1155/2012/263470","url":null,"abstract":"With the rapid advance in multimedia streaming and multicast transport technology, current IP multicast protocols, especially PIM-SM, become the major channel delivery mechanism for IPTV system over Internet. The goals for IPTV service are to provide two-way interactive services for viewers to select popular program channel with high quality for watching during fast channel surfing period. However, existing IP multicast protocol cannot meet above QoS requirements for IPTV applications between media server and subscribers. Therefore, we propose a cooperative scheme of hybrid-tree based on explicit routed multicast, called as HT-ERM to combine the advantages of shared tree and source tree for QoS-supported IPTV service. To increase network utilization, the constrained shortest path first (CSPF) routing algorithm is designed for construction of hybrid tree to deliver the high-quality video stream over watching channel and standard quality over surfing channel. Furthermore, the Resource Reservation Protocol- Traffic Engineering (RSVP-TE) is used as signaling mechanism to set up QoS path for multicast channel admission control. Our simulation results demonstrated that the proposed HT-ERM scheme outperforms other multicast QoS-based delivery scheme in terms of channel switching delay, resource utilization, and blocking ratio for IPTV service.","PeriodicalId":204253,"journal":{"name":"Int. J. Digit. Multim. Broadcast.","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129288592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Rate Adaptive Selective Segment Assignment for Reliable Wireless Video Transmission 可靠无线视频传输的速率自适应选择段分配

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-06-27 DOI: 10.1155/2012/160521

S. Nazir, D. Vukobratović, V. Stanković, Ivan Andonovic

引用次数: 1

A Secure and Stable Multicast Overlay Network with Load Balancing for Scalable IPTV Services 面向可扩展IPTV业务的安全稳定的负载均衡多播覆盖网络

Int. J. Digit. Multim. Broadcast. Pub Date : 2012-06-07 DOI: 10.1155/2012/540801

Tsao-Ta Wei, Chia-Hui Wang, Yu-Hsien Chu, R. Chang

引用次数: 7