Data Security and accuracy using CA for cloud Transaction

Abstract

Dynamic mobility management schemes based on IP address the objective to reduce the overall network traffic incurred by mobility management and packet delivery. The proposed schemes arepeer-peer-based, i.e., Wireless Mesh Networks (WMNs) have gainedIncreasing attention as an attractive means to provide connectivityin complement to access as offered by regular InternetService Providers (ISPs).a grass-root technique,however, often suffers from detrimental operating conditionsand poor quality. Network virtualization, on the otherhand, has been widely advocated as a possibility to overcomewhat has often been referred to as the ossification ofthe Internet. Combining the concept of network virtualizationwith WMN technology, therefore, appears to be promisingand desirable.We develop analytical modelsbased on stochastic Petri nets to evaluate the performance of the proposed schemes. We demonstrate that there exists an optimalthreshold of the forwarding chain length, given a set of parameters characterizing the specific mobility and service patterns of a mobileuser. We also demonstrate that our schemes yield significantly better performance than schemes that apply a static threshold to all mobile users. A comparative analysis shows that our IP forwarding schemes out per-form routing-based mobility managementprotocols for WMNs, especially for mobile Internet applications characterized by large traffic asymmetry for which the downlink packetarrival rate is much higher than the uplink packet arrival rate.We furtherpresent a distributed solution to manage multi-WMNs, anda mobility-aware context use case to demonstrate the usefulnessof our approach.

Keywords: Dynamic Mobility management; IP forwarding; wireless mesh networks; performance analysis