Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
In this work, we propose a time-sensitive incentive-aware mechanism for mobile video offloading by using the idea of crowdsourcing, where video packet holder cooperates with mobile users to deliver video packets to destination. The objective is to maximize video provider and mobile relay users' payoffs. We formulate the interaction among video packet provider and mobile relay users as a two-person...
This work presents a new method to efficiently communicate the correlated visual and depth information captured by multiple mobile RGB-D camera sensors. Our proposed scheme adopting the special properties of the depth map can extract the uncorrelated information between two images without conducting computationally heavy motion estimation. Moreover, a novel entropy coding scheme is proposed to further...
The paper designs the system of real-time streaming media transmission based on multiple 3G-card in the mobile environment especially for news workers to report news events quickly and duly. The paper introduces the system framework including 3 big modules: capturing and transportation subsystem, multiple 3G cards controlling subsystem and media receiving subsystem. Among them transmission and 3G...
With increasing needs of a live video streaming service to mobile devices, peer-to-peer video delivery is required to provide seamless quality of video even if a user moves across heterogeneous networks. In this paper, we address technical challenges and approaches to providing users a seamless video quality in P2P-based live video streaming services over mobile heterogeneous networks by investigating...
There have been lots of technical developments in broadcasting field since 1990s. Providing high quality video and audio is one improvement and supporting mobile reception in a high-speed vehicle is another. Terrestrial Digital Multimedia Broadcasting (T-DMB) is one of the successfully deployed technologies to provide mobile broadcasting service. One of the major breakthroughs achieved by T-DMB in...
Multimedia social network analysis is an emerging research area, which analyzes the behaviour of users who share multimedia content and investigates the impact of human dynamics on multimedia systems. In collaborative mobile networks, receivers cooperate with each other to provide a distributed, highly scalable and robust platform for live streaming applications. However, every user wishes to use...
This paper focuses on concurrent real-time multimedia group communication in wireless environment and proposes a video conferencing system to support multiparty streaming video communication on mobile devices. The proposed solution extends session initiation protocol (SIP) to support multicast session negotiation and uses mobile multicast in IP layer for media data distribution. Since wireless network...
In peer-to-peer (P2P) overlay networks, multimedia contents are in nature distributed to peers by downloading and caching. Here, a peer which transmits a multimedia content and a peer which receives the content are referred to as source and receiver peers, respectively. A peer on a mobile computer is moving in the network. Furthermore, a peer moves around computers as a mobile agent. Thus, not only...
We consider data-streaming from an access point to multiple receivers, which is modeled as packet erasure channel. A simple network coding is shown to achieve larger rate region than without network coding, using minimal control information. The performance is characterized exactly using state transition graph. The scheme is then mapped to an information theoretic formulation for broadcast channel...
A scheme that exploits the broadcast nature of the wireless communication in order to achieve multicast content delivery is presented in this paper. As opposed to broadcasting, this method enables the clients to determine on-line the delivered content, and thus preserves the advantages of an individual service. On the other hand, a multicast content delivery is much more efficient than a unicast content...
Three applications in wireless networks where model-free stochastic learning is applicable, are discussed. The learning based optimization problems are formulated and simulation results are presented. Some open issues are also discussed.
This contribution addresses the case when live packet-switched video is used to enrich circuit-switched speech calls in mobile telephony. Circuit-switched and packet-switched transmissions generally operate on completely different transmission paths resulting in different QoS in terms of delay and loss rates. In this case, video and audio data recorded at the same time are not multiplexed together...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.