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Guest Editorial: Network Technologies for Emerging Broadband Multimedia Services
J. Vis. Commun. Image R. 21 (2010) 75–76
Contents lists available at ScienceDirect
J. Vis. Commun. Image R. journal homepage: www.elsevier.com/locate/jvci
Guest Editorial
Guest Editorial: Network Technologies for Emerging Broadband Multimedia Services With the rapid proliferation of multimedia data, including audio, image, video and graphics, and the great advances of multimedia technologies embedded in JPEG and MPEG standards, more and more network-based multimedia applications (e.g. IPTV, VoD, VoIP etc.) have emerged and have become part of our daily life. All these applications share a basic requirement, i.e., need for broadband services. Indeed, driven by the rapid growing demand of multimedia services, broadband Internet access is now common amongst many Internet users in modern cities. In May 2008, US broadband penetration has reached 89.3% among active Internet users. Nevertheless, despite the high data rate, the broadband multimedia services delivered are not satisfactory. For example, a computer could potentially receive a 100 Mbps data rate connection to the Internet. However, even streaming 500 kbps of a video clip may still suffer from occasional playback interruptions. This is mainly due to lack of end-to-end QoS support in the Internet, and limitations in end-to-end adaptation of current applications. This is just one example to illustrate the challenge of providing good-quality broadband multimedia services. The situation becomes even more challenging when we consider a variety of networks, diverse end users, unpredictable wireless channels, mobility, inter-networking, and co-existence of different types of traffic. In this special issue, we accepted ten papers (out of 40 submissions) which address various issues in the area of network technologies for emerging broadband multimedia services. In particular, the accepted papers can be divided into the following categories: 1) Cross-layer design for video over networks, 2) Multipath video delivery, 3) Video related issues, 4) Network technologies for general multimedia applications. We can see that video related research has been received great attention in the multimedia networking community. This is because video is the most challenging form of multimedia traffic that is already dominating total traffic in Internet. The first category includes 3 papers that focus on cross-layer design for delivering video over various networks. The first paper by Wang and Kuo presents a cross-layer solution for robust H.264 SVC video multicast in erasure networks using network coding and application-layer video interleaving. Such a cross-layer methodology is also used in the second paper by Joo and Song, where they consider the scenario of mobile IPTV over WiMAX and propose to dynamically control the modulation scheme and the coding rate of the H.264 SVC enhancement layer to achieve efficient tradeoff between the number of subscribers and their IPTV service quality. The third paper by Luo et al. presents a more complex cross-layer design for real-time video streaming over wireless multi-hop networks, where they jointly optimize the coding parameters in the application layer, the packet sending rate at
1047-3203/$ - see front matter Ó 2010 Published by Elsevier Inc. doi:10.1016/j.jvcir.2010.02.003
the transportation layer and the modulation and coding scheme at the physical layer. The second category includes 2 papers that utilize multipath in P2P networking architecture for video delivery. The paper by Tang et al. present a cooperative overlay routing service which efficiently composes a number of eligible application-layer paths with suitable relays in the overlay networks. The other paper by Zhang, Zhou and Li proposes to introduce FEC into multi-path transmission to better tradeoff between multi-path bandwidth resource consumption and reliable media quality. Although video traffic is used and tested in PlanetLab, the methods can be applied to other multimedia traffic as well. The third category includes 3 interesting papers that are closely related to videos. The first paper produced by Kang et al. presents their real measurements on the 2nd largest US video sharing site, Yahoo Video, which they crawled for 46 days. The purpose is to understand the workload characteristics of a video sharing date center at different time scales. Many interesting statistical properties are discovered and discussed. The second paper by Koumaras et al. proposes a framework for end-to-end video quality prediction of MPEG videos. The third paper by Liu and Yoo proposes a fast interframe mode decision algorithm for MPEG-2 to H.264 AVC transcoding. Last but not least, we have 2 papers focusing on the network techniques for general multimedia communications. The paper by Pishdad et al. presents a new fair scheduling scheme for IEEE 802.16 network to fulfill the negotiated QoS parameters of different connections while providing fairness within each class of service. Finally, the paper by Narasimha et al. focuses on failure and congestion diagnosis in IP networks. They study how to accurately estimate the underlying network states using the limited amount of available network monitoring resources.
Acknowledgements The Guest Editors hope you enjoy this Special Issue and would like to thank all the authors who have contributed to it. In addition, special thanks go to all the reviewers who have donated their valuable time to provide constructive feedback to the authors. Hwangjun Song a,* Jianfei Cai b Marco Roccetti c Dapeng Oliver Wu d Shivkumar Kalyanraman e a Department of Computer Science and Engineering, POSTECH (Pohang Institute of Technology), Korea
76
b
Guest Editorial / J. Vis. Commun. Image R. 21 (2010) 75–76
School of Computer Engineering, Nanyang Technological University, Singapore c Dipartimento di Scienze dell’Informazione, Università di Bologna, Italy d Department of Electrical & Computer Engineering, University of Florida, USA e IBM Research - India, Bangalore, India
* Corresponding author. Fax: +82 54 279 229. E-mail addresses: [email protected] (H. Song), [email protected] (J. Cai), [email protected] (M. Roccetti), [email protected]fl.edu (D. O. Wu), [email protected], [email protected] (S. Kalyanram).
Contents lists available at ScienceDirect
J. Vis. Commun. Image R. journal homepage: www.elsevier.com/locate/jvci
Guest Editorial
Guest Editorial: Network Technologies for Emerging Broadband Multimedia Services With the rapid proliferation of multimedia data, including audio, image, video and graphics, and the great advances of multimedia technologies embedded in JPEG and MPEG standards, more and more network-based multimedia applications (e.g. IPTV, VoD, VoIP etc.) have emerged and have become part of our daily life. All these applications share a basic requirement, i.e., need for broadband services. Indeed, driven by the rapid growing demand of multimedia services, broadband Internet access is now common amongst many Internet users in modern cities. In May 2008, US broadband penetration has reached 89.3% among active Internet users. Nevertheless, despite the high data rate, the broadband multimedia services delivered are not satisfactory. For example, a computer could potentially receive a 100 Mbps data rate connection to the Internet. However, even streaming 500 kbps of a video clip may still suffer from occasional playback interruptions. This is mainly due to lack of end-to-end QoS support in the Internet, and limitations in end-to-end adaptation of current applications. This is just one example to illustrate the challenge of providing good-quality broadband multimedia services. The situation becomes even more challenging when we consider a variety of networks, diverse end users, unpredictable wireless channels, mobility, inter-networking, and co-existence of different types of traffic. In this special issue, we accepted ten papers (out of 40 submissions) which address various issues in the area of network technologies for emerging broadband multimedia services. In particular, the accepted papers can be divided into the following categories: 1) Cross-layer design for video over networks, 2) Multipath video delivery, 3) Video related issues, 4) Network technologies for general multimedia applications. We can see that video related research has been received great attention in the multimedia networking community. This is because video is the most challenging form of multimedia traffic that is already dominating total traffic in Internet. The first category includes 3 papers that focus on cross-layer design for delivering video over various networks. The first paper by Wang and Kuo presents a cross-layer solution for robust H.264 SVC video multicast in erasure networks using network coding and application-layer video interleaving. Such a cross-layer methodology is also used in the second paper by Joo and Song, where they consider the scenario of mobile IPTV over WiMAX and propose to dynamically control the modulation scheme and the coding rate of the H.264 SVC enhancement layer to achieve efficient tradeoff between the number of subscribers and their IPTV service quality. The third paper by Luo et al. presents a more complex cross-layer design for real-time video streaming over wireless multi-hop networks, where they jointly optimize the coding parameters in the application layer, the packet sending rate at
1047-3203/$ - see front matter Ó 2010 Published by Elsevier Inc. doi:10.1016/j.jvcir.2010.02.003
the transportation layer and the modulation and coding scheme at the physical layer. The second category includes 2 papers that utilize multipath in P2P networking architecture for video delivery. The paper by Tang et al. present a cooperative overlay routing service which efficiently composes a number of eligible application-layer paths with suitable relays in the overlay networks. The other paper by Zhang, Zhou and Li proposes to introduce FEC into multi-path transmission to better tradeoff between multi-path bandwidth resource consumption and reliable media quality. Although video traffic is used and tested in PlanetLab, the methods can be applied to other multimedia traffic as well. The third category includes 3 interesting papers that are closely related to videos. The first paper produced by Kang et al. presents their real measurements on the 2nd largest US video sharing site, Yahoo Video, which they crawled for 46 days. The purpose is to understand the workload characteristics of a video sharing date center at different time scales. Many interesting statistical properties are discovered and discussed. The second paper by Koumaras et al. proposes a framework for end-to-end video quality prediction of MPEG videos. The third paper by Liu and Yoo proposes a fast interframe mode decision algorithm for MPEG-2 to H.264 AVC transcoding. Last but not least, we have 2 papers focusing on the network techniques for general multimedia communications. The paper by Pishdad et al. presents a new fair scheduling scheme for IEEE 802.16 network to fulfill the negotiated QoS parameters of different connections while providing fairness within each class of service. Finally, the paper by Narasimha et al. focuses on failure and congestion diagnosis in IP networks. They study how to accurately estimate the underlying network states using the limited amount of available network monitoring resources.
Acknowledgements The Guest Editors hope you enjoy this Special Issue and would like to thank all the authors who have contributed to it. In addition, special thanks go to all the reviewers who have donated their valuable time to provide constructive feedback to the authors. Hwangjun Song a,* Jianfei Cai b Marco Roccetti c Dapeng Oliver Wu d Shivkumar Kalyanraman e a Department of Computer Science and Engineering, POSTECH (Pohang Institute of Technology), Korea
76
b
Guest Editorial / J. Vis. Commun. Image R. 21 (2010) 75–76
School of Computer Engineering, Nanyang Technological University, Singapore c Dipartimento di Scienze dell’Informazione, Università di Bologna, Italy d Department of Electrical & Computer Engineering, University of Florida, USA e IBM Research - India, Bangalore, India
* Corresponding author. Fax: +82 54 279 229. E-mail addresses: [email protected] (H. Song), [email protected] (J. Cai), [email protected] (M. Roccetti), [email protected]fl.edu (D. O. Wu), [email protected], [email protected] (S. Kalyanram).