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Network bandwidth and server capacity are gradually becoming overloaded due to high demand and rapid evolution of high quality multimedia services over the Internet. Internet Protocol Television (IPTV) is among the multimedia services that demand more of network and server resources, especially with the emergence of Mobile IPTV. It is imperative for service providers to maintain good quality management...
Public health surveillance is the ongoing systematic collection, analysis and interpretation of health-related data. It serves as an early warning system for impending public health emergencies. This paper presents an efficient framework for automated acquisition and storage of medical data using the infrastructure provided by Short Message Service (SMS). The data to be collected are dynamically organized...
Many mobile applications retrieve content from remote servers via user generated queries. Processing these queries is often needed before the desired content can be identified. Processing the request on the mobile devices can quickly sap the limited battery resources. Conversely, processing user queries at remote servers can have slow response times due communication latency incurred during transmission...
In this paper, we describe a mobile application that synchronizes the playback of a video stream among a group of mobile devices while the video playback is controlled (e.g. pause, resume, seek) by one of the devices. This feature allows a group of people to collaborate remotely in real-time through watching the same video on their mobile devices. To make this application work for heterogeneous mobile...
CPU and device virtualization technology allows applications to be hosted on cloud platforms; some of the resulting benefits are lower cost and greater elasticity. In such cloud hosted applications, some components reside on the cloud while others, such as end users and components tied to physical devices, are located outside the cloud. Many applications, e.g., telecom services, have stringent latency...
We propose to demonstrate a system for discussing posters. The system bridges the physical and virtual, using QR codes to tag posters and being available through mobile devices, the web and a projection or large screen view. Control over visibility of interactions is provided, allowing users to control their exposure and consider privacy concerns while making comments on a per-post basis. The use...
Mobile visual location recognition needs to be performed in real-time for location based services to be perceived as useful. We describe and validate an approach that eliminates the network delay by preloading partial visual vocabularies to the mobile device. Retrieval performance is significantly increased by composing partial vocabularies based on the uncertainty about the location of the client...
This paper describes the design, implementation and testing of a prototype system that processes and manages games on a remote server and played on a mobile device. The game application is executed on the remote server and video-streamed to a mobile device over WiFi. The mobile keyboard input is relayed to the server to control the game. The prototype test-bed includes a virtualization based infrastructure...
The current wireless network landscape comprises a plethora of technologies including WLAN, WiMAX and 3G, and not much speaks for a radical change of the state of affairs in the near future. In light of this, it becomes pivotal to facilitate vertical handover between different types of wireless networks. Although, a large number of vertical handover schemes have been proposed in the past several years,...
In this paper we present results of traffic modeling and simulation of multiplayer real-time games and M2M applications using TCP protocol over Telekom Serbia HSPA mobile network, performed within the FP7 LOLA project. In this experimentation, the RTT (Round Trip Time) and cell statistics are analysed. For this purpose, a traffic generation application is developed for Android phones to generate traffic...
This paper presents a conceptual framework of mobility-aware cooperative caching for minimizing electronic content provisioning cost in Mobile Social Wireless Networks (MSWNET). The MSWNETs are formed by wireless mobile devices sharing common interests in electronic content, and physically gathering in various public settings such as University campuses, work places, malls, and airports. Cooperative...
Peer-to-peer file sharing techniques are efficient and popular ways to distribute network media contents. Aiming to improve the accessibility of media contents from mobile devices, we introduce peer-to-peer file sharing technique into delay tolerant networks (DTNs), which are formed solely by highly mobile devices and which distribute files utilizing the mobility of humans and vehicles. We first investigate...
The bicycling recently has gained a lot of popularity in many applications, such as transportation, recreation, and exercise. Bikers may ride in different speeds due to their body strengthes and bike performance such that group members using smart phones form two-tier vehicular long-thin networks along the common cycling path, which consist of a 3G/3.5G high-tier interface and an IEEE 802.11-based...
Wireless communication becomes important part of everyday life, and in the future, there will be new wireless technologies. Vertical handoff between networks with different wireless network interface becomes so important especially in mobile devices that move at high speed such as vehicles. The vertical handoff is required for a vehicle to connect to different wireless networks for different purpose...
With the evolution of mobile devices and networks, and the growing trend of mobile Internet access, rich, multi-player gaming using mobile devices, similar to PC-based Internet games, has tremendous potential and interest. However, the current client-server architecture for PC-based Internet games, where most of the storage and computational burden of the game lies with the client device, does not...
We present a receiver-based rate control scheme in an infrastructure network. A mobile device to receive video stream over wireless plays an important role to decide its rate. As an inter-packet delay (IPD) at the sender decreases, the sending rate increases so that the IPD can be adjusted to control the rate, depending on the receiver buffer occupancy. At every round-trip time, such adjustments will...
The recent widespread deployment of 3G technology has opened the possibility for high value digital content to be delivered to wireless-driven output terminals that may or may not be mobile. This calls for a robust DRM (Digital Rights Management) system that can protect copyrighted content from being illegally accessed. The conventional method of authenticating a registered user or a prospective content...
Handoff scheme provides continuous and seamless transfer when the mobile node moves around the overlay area of wireless networks. It is not practical to use the traditional Received Signal Strength Indication (RSSI) based methods to decide when to process handoff in Collaborative Virtual Environment (CVE), because the probe delay occupies most of the handoff delay time. In this paper, we propose a...
This paper presents a system to facilitate the mobile devices to browse and retrieve video clips from a large amount of media contents. The media server in the proposed system is capable of recommending video clips to users that is adapt to their resolutions. Users are able to send feedbacks about user experiences to the server through the interactive client. Based on the user feedbacks, the media...
As the power of mobile phones continues to grow, they are rapidly becoming ubiquitous. Popularity is transforming them from simple voice-communication devices to advanced-communication devices that provide photo, text,music and Web access (e-mail, download), which is attracting attentions of Content/Service Providers. More and more value-added services have concentrated on the use of mobile phones...
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