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Important User Information: Remote access to EBSCO's databases is permitted to patrons of subscribing institutions accessing from remote locations for personal, non-commercial use. However, remote access to EBSCO's databases from non-subscribing institutions is not allowed if the purpose of the use is for commercial gain through cost reduction or avoidance for a non-subscribing institution. Source: Wireless Personal Communications. Jul, Vol. Abstract: Many real-time applications, handling a large amount of data, require a real-time database system, RTDBS, which provides adequate mechanisms to guarantee time constraints during transaction execution and data access.

Deploying real-time applications using data services in mobile ad hoc networks MANETs implies several constraints. The key challenging is providing the application time constrained services with node limited resources. Indeed, the mobile nodes lifetime has to face unpredictable requests leading to an overload, a battery exhaustion or a service unavailability.

Appropriate parameters are needed to capture the unstable system behavior and the limited autonomy. The proposed architecture is based on a cross-layer approach and integrates the network layer QoS parameters with the ones specified at the application layer, useful in the service selection step.

The proposed solution includes i an energy and delay aware routing protocol and ii a cross-layer service selection protocol, ensuring both timeliness and energy efficiency by avoiding low-power and busy service provider nodes. Simulation results prove that the protocols offered within the cross-layer architecture, decrease the deadline miss ratio of packets, increase the service availability and extend the network lifetime.

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However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. All rights reserved.


A QoS Architecture for Real-Time Transactions Guarantee in Mobile Ad Hoc Networks.






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