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With the rapid growth of wireless and mobile communication technology, P2P live streaming application is extending to mobile peers. In order to prevent Buffer Map Cheating (BMC) attacks in mobile P2P live streaming system, we model the chunks exchanging behavior between neighboring mobile peers under an infinitely repeated two-player game theoretic framework. The Nash Equilibrium is refined based...
In mobile multimedia streaming services, important requirements consist of the support of service continuity, the guarantee of acceptable Quality of Service (QoS) and insurance of steady Quality of Experience (QoE). How to get a uniform data exchange rate during the entire (or partial) course of a streaming service while a user is on the move is an important challenge. Generally speaking, the streaming...
Deploying the static wireless devices (throw-boxes) at certain locations can help message dissemination among mobile nodes in delay tolerant networks. The mobile nodes traveling between throw-boxes form network links that carry the temporally stored messages at one box to another. However, the aggregated mobility between pairs of boxes reveals a time-dependent nature on its link delay (travel time)...
DoD and Army initiatives seek to establish a Common Operating Environment (COE) that covers data centers, mobile platforms, sensors, and individuals. Computing Environments (CE) define the characteristics of the required hardware and software from enterprise servers down to handheld devices. The distinct Network Environments (NE) at these CEs influence the computing technologies, standards, and methods...
With the advancement of wireless technologies, seamless connectivity is near to becoming possible. In this paper, we propose a novel idea to attain seamless connectivity in the presence of intermittent bandwidth availability. Critical services/applications are required to deliver without any issues every time and throughout. Intermittent bandwidth availability is one of the many hindrances and a bottleneck...
In wireless networks a packet can be lost due to numerous reasons, such as congestion, medium related errors, routing and mobility. In these scenarios, the real congestion status of the network is crucial to develop accurate and efficient congestion control protocols. Some of the most known and recent protocols developed to provide faster and lighter congestion control are the eXplicit Control Protocol...
In this paper, we explicitly consider the scenario of supporting applications with high-bandwidth and low-latency requirements in mobile social networks (MSNs), by leveraging the existing social network sites. Our solution does not assume any centralized server who coordinates the data storage, access, and group management. We address the fundamental challenge supporting such applications, namely:...
In mobile P2P systems over 3G cellular networks, traditional peer selection algorithms with the idea of traffic localization are not suitable due to the architecture and characteristics of 3G cellular networks. In this paper we propose a novel peer selection algorithm named CFPL for mobile P2P systems over 3G cellular networks. By taking not only the available uplink bandwidth of peers but also the...
Mobile devices today such as netbooks, tablet PCs and smart phones provide user-friendly interfaces for people to capture live video. However as a viewer, they prefer not to share downloaded clips due to the limited computing power, upload bandwidth and mostly due to the high power consumption while scheduling segments. In this paper, we discuss the possibility of allowing mobile clients run as free...
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...
Multimedia streaming applications have disruptively occupied bandwidth in wire line Internet, yet today's fledging mobile media streaming still poses many challenges in efficient content distribution due to the form of mobile devices. At the same time, cloud computing is gaining power as a promising technology to transform IT industry and many eminent enterprises are developing their own cloud infrastructures...
The key challenge to provide a seamless peer-to-peer live video delivery over mobile heterogeneous networks is to handle dynamic changes of networks due to vertical handoff. To adapt to the network changes, it is required to support path adaptation which changes an overlay path by selecting a new sending peer and adjusts a reception rate to the new overlay path. In order to handle the path adaptation...
In this paper we provide an architecture for Tactical Information Middleware for bandwidth constrained information management. We propose the ideas of rank-based data dissemination, and the use of a tactical information management query language. These ideas will deal with dynamic changes in bandwidth and explore opportunistic data dissemination. Thus, will lead to a cross layer design of a system...
The rapid spread of wireless mobile devices and the advances of wireless communication have fueled the interest about streaming 3D graphics on mobile devices to be used in augmented reality based classes of applications. In these types of applications, a real world is mapped into the virtual world and thin mobile devices are employed to navigate in the virtual simulated environment (VE). In evidence,...
An admission control Algorithm must organize among flows and should afford assurance of how the medium is shared between nodes. In a wired network, nodes can keep an eye on the medium to see how much bandwidth is being used by the network. On the other hand, in an Ad-Hoc network, during communication nodes possibly will use the bandwidth of neighbouring nodes. Consequently, the bandwidth consumption...
Most of the routing and replication algorithms assume the network to be large and therefore, the architecture and algorithms are designed to be scalable. These algorithms however may not perform well with limited number of nodes in a network of UAVs. It is better to design and simulate such algorithms to increase the efficiency in a small network as scalability is no longer an issue. For such networks,...
Current devices use a network selection policy that is mostly driven by the physical layer, choosing the point of attachment with the highest Received Signal Strength Indicator (RSSI). Unfortunately for 802.11 networks, RSSI is not a good indicator of actual network performance as it is normally the bandwidth to the Internet and not the wireless signal conditions which dictates the quality of service...
A novel distributed localization method for wireless sensor networks (WSN) is proposed in this paper. Linear frequency modulation (LFM) waves are emitted from two anchors simultaneously to create an interference field. Through the frequency measurement of local RSSI (Received Signal Strength Indication) signal, the TDoA (Time-Difference-of-Arrival) is estimated independently at each sensor to detect...
With the advances of wireless communication and mobile computing, there is a growing interest among researchers about augmented reality and streaming 3D graphics on mobile devices for training first responders to be better prepared in a case of disaster scenarios. However, several challenges need to be resolved before this technology become a commodity. One of the major difficulties in 3D streaming...
This paper proposes a multi-channel MAC scheme for Vehicular Ad Hoc Networks (VANETs), which dynamically adjusts the intervals of Control Channel (CCH) and Service Channels (SCHs). Markov modeling is conducted to optimize the intervals based on the traffic condition. The scheme also introduces a multi-channel coordination mechanism to provide the contention-free access in SCHs. Theoretical analysis...
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