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Pooling mobile nodes in vicinity as a collaborative community offers an opportunity for multi-homed mobile nodes to enable multipath transmission even when there is no multiple access coverage. However, packet collisions exist within the collaborative community when a contention-based channel access such as IEEE 802.11 is applied. As a result, the overall multipath performance may degrade if a regular...
With the ever-growing demands of wireless communications, traffic load sharing is essentially important to provide consistent high quality of service (QoS). It is known that the QoS of mobile users is affected by the limited bandwidth in both wireless link and wired backhaul link beyond a base station (BS). Femtocell is a promising technology to bear part of the traffic load from the BS. Nonetheless,...
The resource distribution in P2P network has an obvious scale free character. Using this inherent character to design resource search strategy is great significant for improving searching efficiency and reducing the costs. We analyze the scale free distribution character in P2P network, and propose a reliable random walk search algorithm to achieve high and reliable search efficiency through forwarding...
Huge amounts of data are available in large-scale networks of autonomous data sources dispersed over a wide area. Data mining is an essential technology for obtaining hidden and valuable knowledge from these networked data sources. In this paper, we investigate clustering, one of the most important data mining tasks, in one of such networked computing environments, i.e., Peer-to-Peer (P2P) network...
As a very promising technique, multi-hop relay has been considered in many wireless networks. It can take advantage of the inherent broadcasting nature of wireless transmission and facilitate cooperative communications. In this paper, we develop an effective analytical framework to study the delay performance of cooperative retransmission strategies. All neighbor nodes overhearing the in-progress...
Load balance in P2P storage system will affect availability greatly. Two aspects should be considered in keeping balance: balance in peer space and balance in data replica among peers. This paper focuses on achieving balance in peer space. Peers are categorized by periodicity of availability, and long term peers are organized into virtual balanced binary tree which is improved from P-Grid. Character...
Secure joining process has become the most challenging problem in P2P system. This paper presents a joining process with security in P-Grid system including authentication of entry peer and new peer. The core idea to ensure security authentication is to use multiple consultant peers and a quorum-based method to make a decision. From preliminary analysis of the process, high successful probability...
Wireless grid is an emerging communication and resource sharing architecture in recent years. It is getting more and more researches and application in mission, industry, business, science research. Wireless grid technique is developing and improving, especially with the storage capacity rising, we can manage storage resources in the wireless grid, and ensure the grid availability and reliability...
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