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Recent studies have suggested that the stability of peer-to-peer networks may rely on persistent peers, who dwell on the network after they obtain the entire file. In the absence of such peers, one piece becomes extremely rare in the network, which leads to instability. Technological developments, however, are poised to reduce the incidence of persistent peers, giving rise to a need for a protocol...
Ensuring high data availability is a vital prerogative for Content Delivery Networks (CDN), and as we look to deploy CDN mechanisms onto mobile platforms, this imperative becomes ever more challenging. In traditional CDNs, replication ensures high availability of data, with server-loads and content-popularity often used as parameters to tightly control the process. However, the highly transient properties...
This paper proposes a novel method to provide a selective VoD service in live streaming environment using peer-to-peer communications. The proposed scheme defines a peer classification method and a video frame sharing method to decrease peer side traffic burden. The proposed scheme can decrease the peer generating traffic overhead compared to the conventional peer-to-peer live streaming protocol.
Data availability in mobile information systems is lower than in traditional information systems due to its limitations of wireless communication such as low bandwidth, instability, and easy disconnection. Cooperative data caching is an attractive approach to this problem. This paper proposes an efficient approach for cooperative caching in mobile information systems. We use references to share data...
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,...
When extending peer-to-peer live streaming system to IEEE 802.11-based wireless network, service guarantee for inter-domain movement is an obstacle since IEEE 802.11 has no QoS maintenance mechanism for it. The stream system must consider it itself. As a peer roams among adjacent networks, the streaming service will be interrupted by the disconnection of wireless network path and IP address changes...
A project of mobile value-added service based on P2P is proposed. In this project, wireless devices can build a P2P network dynamically and they can access and transmit information point to point. The idea will adapt to the 3G wireless network and it will become a effective solution for mobile value-added services on 3G. Utilizing JXTA and J2ME, a platform based the project is realized. The module...
The mobile ad-hoc network (MANET) is developing rapidly, and mobile servers are the trend of future network nodes. But it is still a problem to produce a suitable mobile server in the MANET. The challenges are from power saving, performance, portable requirements and so on. This paper presents a design of mobile server framework. It modularizes the server as replaceable units so that new technology...
Mobile learning (m-learning) is attracting much attention with the convenience of the anytime-and-anywhere learning. However, information dissemination to the huge numbers of mobile learners using a peer-to-peer channel arouses network bandwidth consumption and the heavy load on the servers. In this paper, we propose an agent-based information push technology in the m-learning system. The system architecture,...
Video-on-demand service in wireless networks is one important step to achieving the goal of providing video services anywhere anytime. Typically, carrier mobile networks are used to deliver videos wirelessly. Since every video stream comes from the base station, regardless of what bandwidth sharing techniques are being utilized, the media stream system is still limited by the network capacity of the...
The development of mobile ad hoc systems have considerably emphasized the need for a better understanding of the factors that influence the systemspsila performance, i.e., mobility patterns, radio propagation, traffic characteristics and their interrelations. Depending on the context where the system is being used-whether at work, at home, or in some means of transportation-there will be various applications...
In this paper, an approach to service profiling and thus enabling effective service use is presented. This approach is built on the characteristics of mobile peer-to-peer environment. The proof-of- concept of our approach is demonstrated by PeerHood implementation, in which lightweight service, profile manager enables the efficient service profiling.
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