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In typical IP network, load balancing is adopt to enable the load of all servers approach a global optimal balanced by dynamically dispatching new flows to different servers in the network. Linux Virtual Server (LVS) plays an important role in the dispatching process. However, previous LVS-based researches have failed to consider expansibility, efficiency and security. Based on this, we proposed a...
For the information system, Database acts an important role in it. How to find a way to audit the operation of the database is becoming more and more important. An effective database auditing system can not only reduce the potential security risk, also make it possible to trace the source when errors happen. In this paper, we design and implement an effective audit framework. To avoid causing any...
In this letter, under the assumption of multiple antennas are available at the relay nodes, we provide a detailed analysis about the performance of opportunistic multi-antenna relay selection (OMRS) scheme in Decode-and-Forward (DF) relay networks over independent, non-identical, Nakagami-m fading channels. By applying the moment-generating function (MGF) of the total signal-to-noise ratio (SNR) at...
This paper studies expression of outage probability and partner selection strategies for cooperative network based on IDMA superposition modulation. By changing existing outage gain matrix into a symmetric new one and applying Hungary and WLF algorithm, a centralized optimal and a distributed sub-optimal partner selection strategies are proposed for superposition modulation cooperative multiple access...
In this paper, we propose a location-aware relay selection (LARS) scheme based on geographical information in the distributed opportunistic relay (OR) communication system. The scheme aims to limit the contention among potential relays through dividing the whole relay selection region into some small nonoverlapping contending torus zones. If a relay lies in the specified contending zone and its local...
In structured peer-to-peer (P2P) overlay networks, similar documents are randomly distributed over peers with their data identifiers consistently hashed, which makes complex search challenging. Current state-of-the-art complex query approaches in structured P2P systems are mainly based on inverted list intersection. When the identifiers are distributed among peers, a complex query may involve many...
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