The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In wireless networks, it is important to realize energy-efficient video delivery. To do this, we introduce energy-efficient video streaming over named data networking (NDN). In our proposed approach, we focus on two areas, namely, to improve the throughput performance by Interest aggregation, and to reduce the overhead energy using playout buffer-size control. We evaluate the power savings realized...
In recent years, high-level languages and compilers, such as OpenCL have improved both productivity and FPGA adoption on a wider scale. One of the challenges in the design of high-performance stream FPGA applications is iterative manual optimization of the numerous application buffers (e.g., arrays, FIFOs and scratch-pads). First, to achieve the desired throughput, the programmer faces the burden...
Constant video surveillance of remote locations in rural areas, dense urbanized dwellings and strategic military sites is of paramount interest to law enforcing agencies. Aerial monitoring is now made possible by using dozens of camera mounted UAVs (Unmanned Aerial Vehicles) streaming video from different vantage points to a single command and control center. In this paper, we present an architecture...
In adaptive video streaming, rate adaptation is an important procedure for switching between different representations provided at the server, to cope with the network fluctuations. However, most of adaptation methods ever since mainly focus on the case of constant bitrate (CBR) video. In this paper, we present a new method that can effectively support variable bitrate (VBR) videos. Our method is...
Providing robust content delivery service, such as Video on Demand, with efficient wireless resource usage is important for mobile users. To achieve this, we have proposed a proactive content caching scheme utilizing transportation systems (e.g., train.) Because our previous prototype is immature and has a scalability issue, in this paper, we introduce efficient transmission mechanism of Interest...
Rate control is a big challenge for real-time video streaming on the internet with the needs of low latency, bandwidth-consuming and stable video rate. However, most of the existing Internet congestion control protocols ignore these needs, and some of them use the packet loss event as congestion signal which is deviation especially over error-prone wireless networks. In this paper, we propose a delay-constrained...
The paper presents a peer-to-peer video streaming system with an ability to change the encoded video resolution adaptively to the data throughput changes. The low latency live video streaming based on the WebRTC specification was used in the investigation. The P2P video streaming system was able to predict the current performance of the data connection in the receiver and react by sending a request...
HTTP streaming has become a cost effective means for video delivery nowadays. To enable adaptivity to networks and terminals, a provider should generate multiple representations of an original video as well as the related signaling metadata. So far, most previous studies have just focused on the case of CBR (constant bitrate) video. In this paper, we propose a novel adaptation method for VBR (variable...
This paper presents a working distributed SATCOM policy enforcement (SPE) software prototype that protects priority traffic in tactical SATCOM networks. The SPE software is designed for distributed deployment at SATCOM terminals and is compatible with communication security (COMSEC) considerations where mission data originated by applications operating on protected computing systems is encrypted prior...
Advances in multimedia and network technology enables to stream UHD video over public Internet. However, previous congestion control schemes have several limitations to guarantee the quality of UHD video streaming. The sluggish behavior of congestion control scheme disturbs the rapid increase in video quality. Another problem is burst packet losses caused by overshooting of transmission rate. These...
The demand for video streaming has been soaring in recent years. However, there is a gap between traffic demand and link capacity due to time-varying throughput fluctuation. This fluctuation results in poor quality video streaming services. The most well-known technique to improve the quality of video streaming is: adaptive video streaming. This technique adjusts the video bit-rate to the time-varying...
In recent years, people use multimedia applications which have become increasingly, such as watching IPTV or video streaming by smart phone. However, wireless user equipment (UE) is powered by battery which could only operate in a limited time. According those reasons, reducing the energy consumption of user equipment for communications is a major challenge. But in operator's opinion, they wish that...
Steady improvements in bandwidth offerings over wireline and most recently even wireless networks has helped the emergence of so-called Over the top (OTT) services, that is, quality-sensitive applications which adapt to device and network conditions to deliver a service with a suitable quality for its users. Unlike traditional multimedia deployed over quality-enabled networks, OTT services cannot...
Cellular networks are particularly suitable for the provision of vehicular online services due to their high coverage rates. The network dynamics and the mobility of the vehicle lead to frequent changes in the communication properties. Many vehicular application do not deal well with unexpected changes in conditions. In this paper we present our approach to provide vehicles with context data about...
Police departments and other law enforcement agencies have integrated a greater number of video cameras into their daily routines. This has introduced with it the problem of moving and processing vast amounts of video data. In this work, we take a look at some of the associated problems and our own attempts to address them. We first analyze the physical network and infrastructure at Temple University's...
HTTP ABR Video Streaming based methods are being used by certain media players and video servers. With this, video is encoded with different data rates, stored on a content server (if possible) and streamed to different client devices. Media player at client device considers various performance factors and decides the rate that it should ask for the next video segment. There are different types of...
Live streaming services over HTTP used on smart devices via a mobile network have become very popular. However, playback interruption often occurs during a live streaming. This is because TCP throughput fluctuates due to radio strength variation and cross-traffic, and the playback buffer on the client side is small. To solve the playback interruption problem, adaptive rate control techniques are helpful...
Content Centric Networking (CCN) has been emerged as a new networking paradigm. In CCN, adaptive video streaming is one of the most promising technologies. However, rate adaptation and outbound face selection are the primary concern since a node cannot reliably estimate the end-to-end throughput. In this paper, we propose a strategy for outbound face selection considering both response time and bit-rate...
In LTE multi-service communication system, a trade-off between QoS assurance and fairness is a challenging issue, since the QoS provisioning at the cost of starving users in low service demand classes is not favorable for the operator. In this paper, we adopt the time-domain Knapsack algorithm and fine tune it to provide fair resource allocation while support QoS requirements in LTE downlink scheduling...
The video streaming service over Wireless Mesh Networks (WMNs) is an attractive feature for live streaming and video conversation when disaster occurs. The path construction with the conventional metrics e.g., throughput, latency, or packet loss rate, suffers from the repeated waiting time due to the CSMA/CA since paths are concentrated on nodes with good metric. As a consequence, it brings about...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.