Searching for authors named "Ahmed Helmy" – sorted by Relevance.
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CAPTURE: location-free Contact-Assisted Power-efficienT qUery REsolution for Sensor Networks
- …this paper, we present an architecture that is geared towards one-shot frequent queries in sensor networks. In our approach we aim at reducing the total energy cost query resolution as opposed to searching for high quality routes…
- Cited by 1 (1 self) – Add To MetaCart
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Efficient Resource Discovery in Wireless AdHoc Networks: Contacts Do Help
- … The resource discovery problem poses new challenges in infrastructure-less wireless networks. Due to the highly dynamic nature of these networks and their bandwidth and energy constraints, there is a pressing need for energy-aware communicationefficient resource discovery protocols. This chapter p…
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Multicast-based Architecture for IP Mobility: Simulation Analysis and Comparison with Basic Mobile IP
- …With the introduction of a newer generation of wireless devices and technologies, the need for an efficient architecture for IP mobility is becoming more apparent. Several architectures have been proposed to support IP mobility. Most studies, however, show that current architectures, in general, fal…
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A Survey on Kernel Specification and Verification
- …Formal methods have been traditionally used to model and verify operating systems. Different methods verify different operating systems properties, such as process management, mutual exclusion and inter-process communication. Moreover, various methods may capture different design errors, such as dea…
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PARSe: Power-efficient Architecture for Resource-discovery and Small-transfers in Large-Scale Ad Hoc Networks
- …Resource discovery requests and small transfers are likely to constitute a significant portion of the flows in emerging classes of ad hoc networks. In these applications the query or transferred object is carried within the request message itself. Route discovery for such requests incurs much more c…
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TRANSFER: Transactions Routing for Ad-hoc NetworkS with eFficient EneRgy
- …In future ad hoc networks, transactions are expected to become one of the primary types of flows. Transactions require only a very small number of packets to complete. Hence, providing optimal (or shortest path) routes to such transfers consumes more energy than the actual transfer. Conventional rou…
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Architectural Framework for Large-Scale Multicast in Mobile Ad Hoc Networks
- …Emerging ad hoc networks are infrastructure-less networks consisting of wireless devices with various power constraints, capabilities and mobility characteristics. An essential capability in future ad hoc networks is the ability to provide scalable multicast services. This paper presents a novel ada…
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Mobility-Assisted Resolution of Queries in Large-Scale Mobile Sensor Networks (MARQ)
- …One of the most crucial aspects of the design of sensor networks is provisioning of e#cient query resolution and resource discovery. In many cases sensor networks are expected to be large-scale, and in some cases these sensors maybe installed on moving objects, rendering the query resolution problem…
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State Analysis and Aggregation Study for Multicast-based Micro Mobility
- …We propose intra-domain multicast-based mobility as a solution for IP mobility. Our architecture addresses problems with existing IP mobility proposals; mainly scalability and handoff performance. In our scheme mobility proxies are used to allocate per-domain multicast addresses to mobiles for use i…
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Efficient Micro-Mobility using Intra-domain Multicast-based Mechanisms (M&M
- …One very important metric in evaluation of IP mobility protocols is handover performance. Handover occurs when a mobile node changes its network point-of-attachment. If not performed efficiently, handover delays, jitters and packet loss directly impact applications and services. With the Internet gr…
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