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Due to the use of acoustic channels with limited available bandwidth, Underwater Sensor Networks (USNs) often suffer from significant performance restrictions such as low reliability, low energy-efficiency, and high end-to-end packet delay. The provisioning of reliable, energy-efficient, and low-delay communication in USNs has become a challenging research issue. In this paper, we take noise attenuation...
The anonymity and dynamic characters of Peer-to-Peer (P2P) system makes it an ideal medium for selfish and vicious action. In order to solve this problem, P2P reputation systems are proposed to evaluate the trustworthiness of peers and to prevent the selfish, dishonest, and malicious peers' behaviors, which collects local reputation scores and aggregates them into the global reputation. In this paper...
The provisioning of energy-efficient, reliable and low-delay communication in Underwater Sensor Networks (USNs) is a challenging research issue due to the use of acoustic channels. However, the existing mechanisms for enhancement of energy utilization and Quality-of-Service (QoS) in USNs have not considered noise attenuation in deep water which can deteriorate energy efficiency and QoS seriously....
In recent years, the video streaming service has become one of the most important applications. The rapid growth of users raises a big challenge to the traditional client-server VoD service. In order to provide large scale VoD service with lower server bandwidth cost, P2P technology has been introduced to VoD service. P2P based VoD service provides the same user experience as the client-server mode...
The k-ary n-cube which has an n-dimensional grid structure with k nodes in each dimension has been a popular topology for interconnection networks. Analytical models for k-ary n-cubes have been widely reported under the assumptions that the message destinations are uniformly distributed over all network nodes and the message arrivals follow a non-bursty Poisson process. Recent studies have convincingly...
Cluster-based systems have emerged as a promising technology for providing cost-effectiveness in high-performance computing and communication systems. Performance studies on communication networks in cluster-based systems have been reported based on the simplified assumptions that the traffic follows the non-bursty Poisson process and the message destinations are uniformly distributed over all network...
Selfish behaviors significantly affect the overall performance of mobile ad hoc networks (MANETs). Reputation systems have been proved to be an efficient way to block such behaviors in MANETs. Several reputation models based on subjective logic have been proposed to improve the reputation mechanism, in which an uncertainty value is introduced for reputation computation when the local information is...
This paper proposes a time-decay based trust model in peer-to-peer networks. Through the transaction time is faded, the proposed model makes trust value changed dynamically with time decay, which achieves the goal that the more transaction close to, the more reliable it is. Finally this paper presents the experimental protocol and simulation. The experimental result shows that the proposed model is...
Due to lack of effective trust management mechanism, there are a lot of deceptive behaviors in P2P networks, which seriously decrease the quality of network services. In order to improve the quality of services (or transactions), this paper proposes a novel trust and reputation model based on similarity evaluation in P2P environments. According to the different context of services, the model gives...
Peer-to-peer networks are one of the trends in the field of internetworking. Mobile agent-based technology is a newly proposed technology that can be used in peer-to-peer networks. Mobile agents are small software entity that can migrate freely from node to node in heterogeneous networks and has attracted considerable interest in both academia and industry in recent years. In this paper, we focus...
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