Adaptive Delivery of Multimedia Data in Heterogeneous and Mobile Environments

Data dissemination today represents one of the cornerstones of network-based services and even more so for mobile environments. This becomes more important for large volumes of multimedia data such as video, which have the additional constraints of speedy, accurate, and isochronous delivery often to thousands of clients. In this chapter, we focus on video streaming with emphasis on the mobile environment, first outlining the related issues and then the most important of the existing proposals employing a simple but concise classification. New trends are included such as overlay and p2p network-based methods. The advantages and disadvantages for each proposal are also presented so that the reader can better appreciate their relative value.

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Data Dissemination in Mobile Environments

Mobile Computing ◽

10.4018/978-1-60566-054-7.ch230 ◽

2009 ◽

pp. 3068-3078

Author(s):

Panayotis Fouliras

Keyword(s):

Video Streaming ◽

Data Dissemination ◽

Multimedia Data ◽

P2p Network ◽

Mobile Environments ◽

Mobile Environment ◽

Advantages And Disadvantages ◽

Relative Value ◽

Additional Constraints

Data dissemination today represents one of the cornerstones of network-based services and even more so for mobile environments. This becomes more important for large volumes of multimedia data such as video, which have the additional constraints of speedy, accurate, and isochronous delivery often to thousands of clients. In this chapter, we focus on video streaming with emphasis on the mobile environment, first outlining the related issues and then the most important of the existing proposals employing a simple but concise classification. New trends are included such as overlay and p2p network-based methods. The advantages and disadvantages for each proposal are also presented so that the reader can better appreciate their relative value.

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Prioritization-based Layered Multicast for Fixed/Mobile Networks with Fast Convergence and Inter-Session Fairness

Journal of Communications Software and Systems ◽

10.24138/jcomss.v2i2.292 ◽

2017 ◽

Vol 2 (2) ◽

pp. 89 ◽

Cited By ~ 2

Author(s):

Kenichi Kashibuchi ◽

Tarik Taleb ◽

Abbas Jamalipour ◽

Yoshiaki Nemoto ◽

Nei Kato

Keyword(s):

Mobile Networks ◽

Data Transmission ◽

Transmission Rate ◽

Multimedia Data ◽

Mobile Environments ◽

Bandwidth Utilization ◽

Layered Multicast ◽

Long Time ◽

Streaming Services

Multimedia streaming services are becoming popular in both wired and wireless networks. Layered multicast is a widely accepted approach for streaming multimedia data to a large number of users. Existing layered multicast approaches donot interact well with network dynamics. Indeed, upon a change in network conditions, they require a long time till they can appropriately adjust their data transmission rate. Additionally, they do not achieve fairness when users from different sessions share the bandwidth of a bottleneck link.In this paper, we propose a scheme that allows newly-arriving users to promptly converge their data transmission rates to the most optimal rate that best suit the current conditions of the network without degrading the system fairness. The proposed scheme is based on the fact that layered multicast uses prioritybased packet dropping policies. In the proposed scheme, two newly-defined packet messages are considered: “low priority join” and “normal join” messages. To join a session, a user first subscribes to all corresponding layers by issuing “low priority join” messages. It then computes packet drops experienced oneach layer. If packets of a given layer experience a drop rate higher than a predetermined threshold, the user leaves that layer and all higher layers. The user then “officially” joins the remaining layers by transmitting “normal join” messages. This operation helps users to subscrive to only layers whose aggregate bandwidth fits the current network conditions. The performance of the proposed scheme is evaluated through computer simulations and is compared against the Receiverdriven Layered Multicast (RLM) scheme. The results show that the proposed scheme achieves appropriate bandwidth utilization from the start of the session. The results demonstrate also that the proposed scheme is effective in managing handover in mobile networks and achieves better Quality of Service (QoS) inheterogeneous mobile environments.

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