Resource efficient urban delay disruptive tolerant networks

... Chapter Introduction 1.1 The background of Delay/ disruptive Tolerant Networks 1.1.1 Brief history of DTNs and the evolution The idea of Delay/ disruptive Tolerant Network (DTN) can be traced back ... systematic research on Delay/ disruptive Tolerant Network (DTN), especially for urban DTNs, e.g., opportunistic networks consisted of smart phones, and Vehicular Ad hoc NET...

Ngày tải lên: 09/09/2015, 11:33

... advances on theoretical aspects of opportunistic and delay-tolerant networks Castro et al consider the interesting scenario of peer-to-peer file sharing in delay-tolerant rural scenarios The authors ... super nodes to provide seamless communications for roaming users over interconnected heterogeneous wireless networks The improvement consists in including a better understanding of...

Ngày tải lên: 21/06/2014, 05:20

... [14], cars act as data mules and employ a carry-and-forward paradigm to transfer data packets to a portal Finally, in [15], opportunistic data delivery is studied when both traditional routing and ... delay-tolerant applications A variety of measurements have been made recently available on the Internet [3, 26] in the form of traffic traces or contact patterns When a historical data...

Ngày tải lên: 21/06/2014, 11:20

... vehicular networks The design of the proposed testbed for VDTN networks is presented in Section Section focuses on the performance evaluation and validation of the proposed testbed Section concludes ... testbed demonstration This section focuses on the testbed demonstration and performance evaluation of IP over VDTNs and considers two sections...

Ngày tải lên: 21/06/2014, 17:20

... and time-demanding for dense local area network deployments Moreover, as we show here, fixed frequency reuse may result in suboptimal system performance By letting the devices locally coordinate ... problem, where the system performance would benefit from allowing more spatial reuse of radio resources in order to obtain higher areal spectral efficiency To this end, interference-aware MA...

Ngày tải lên: 21/06/2014, 05:20

... performance improvements both in terms of larger energy efficiency and of smaller transmit power Conclusions In this paper, the problem of adaptive cross-layer resource allocation in wireless data ... implementations of several resource allocation algorithms Indeed, our results show that these algorithms converge to a neighborhood of the Nash equilibrium (NE) point of the co...

Ngày tải lên: 21/06/2014, 22:20

... Abstract The Dynamics of Float, Logic, Resource Allocation, and Delay Timing in Forensic Schedule Analysis and Construction Delay Claims By Long Duy Nguyen Doctor of Philosophy in Engineering-Civil and ... damages in construction delay claims They address the dynamics of float, logic, resource allocation and the delay context...

Ngày tải lên: 13/11/2014, 06:07

... ANALYSIS, DESIGN AND OPTIMIZATION OF ENERGY EFFICIENT PROTOCOLS FOR WIRELESS SENSOR NETWORKS HOANG DUC CHINH (B.Eng., Hanoi University of Technology, Vietnam) A THESIS SUBMITTED FOR THE ... 21 1.3.4 Energy Efficient Routing and Optimization Methods in Wireless Sensor Networks 24 2.1 Introduction 24 2.2 Routing Protocols for Wireless Sensor Netwo...

Ngày tải lên: 10/09/2015, 09:04

... Abstract Dynamic Resource Allocation for Energy- Constrained Wireless Networks over Time- Varying Channels by Zhang Xiaolu in Department of Electrical ... is on the establishment of a theoretical framework on dynamic resource allocation for energy- constrained wireless networks over time- varying channels This framework chooses the end-user applicat...

Ngày tải lên: 10/09/2015, 15:52

... wireless networks such as Moible Ad Hoc Networks (MANET) and wireless sensor networks Routing protocols for MANET have been designed to handle fast topology changes On the other hand, in wireless sensor ... attempts to solve the routing problem due to the dynamics of wireless links and therefore focus on designing robust and energy efficient routing protocols...

Ngày tải lên: 11/09/2015, 16:06

... Comparable Resource Usage with MST By definition, minimum spanning tree (MST) has minimum resource usage among all the overlay trees The first contribution of this thesis is proposing a new distributed ... to flexibly trade resource usage with delay 2.5.6 Distributed MST The basic Distributed MST algorithms [14] constructs a spanning tree consisting of rooted sub...

Ngày tải lên: 04/10/2015, 16:12

... Comparable Resource Usage with MST By definition, minimum spanning tree (MST) has minimum resource usage among all the overlay trees The first contribution of this thesis is proposing a new distributed ... to flexibly trade resource usage with delay 2.5.6 Distributed MST The basic Distributed MST algorithms [14] constructs a spanning tree consisting of rooted sub...

Ngày tải lên: 04/10/2015, 17:04

... EMPTY CELL MANAGEMENT FOR GRID BASED RESOURCE DISCOVERY PROTOCOLS IN AD HOC NETWORKS SEBASTIEN HEUGUET (B E., Supelec, France) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT ... the future Therefore, in this thesis, we focus on resource discovery protocols using geographic location information 1.2 The empty cell problem for gri...

Ngày tải lên: 05/10/2015, 21:22

... mainly focus on the design of energy efficient protocols for WSNs in the form of wakeup scheduling of the sensor nodes We propose two energy conserving protocols for different applications, one ... WSN is designed for, it is necessary to make the protocols as energy- efficient as possible The reason is simply because the source of energy for typical sensors are limit...

Ngày tải lên: 05/10/2015, 21:23