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In this paper, a new zone radius determination algorithm, based on an adaptive nature-inspired routing protocol that emulates the foraging behavior of bees and their ability to find an optimal route from the hive to the nectar sites, is proposed. Instead of tuning one-hop-by-one-hop radius of nodes as in IZRP, our proposed algorithm uses the difference zone radii between adjacent nodes to calibrate...
This paper proposes a constrained iterative optimal approach to estimate traffic matrix, namely all origin-destination traffic, in a large-scale backbone network. Based on the modified principal component analysis method, we denote traffic matrix estimation problem into an iterative optimal process under the constraints followed by it. In each iterative step, the covariance matrix of traffic matrix...
Opportunistic Networks (ONs) utilize the communication opportunity with a hop-by-hop behavior, and implement communication between encountered nodes based on the Store-and-Forward routing pattern. This approach, which is totally different from the traditional communication model, has received extensive interests from academic community. We consider the ONs are a type of Delay Tolerant Networks (DTNs)...
Understanding the energy consumption of individual tasks in wireless sensor networks (WSN) is an important aspect for a network deployment. The fundamental task of WSNs is to gather data in the long-term manner. All additive processes such as routing and localization should not significantly affect the life time of the WSN. It was already proved that concurrent anchor free localization algorithms...
Multi-path routing scheme can guarantee the probability of successful packet delivery in mobile ad hoc networks (MANET), network reliability can also be enhanced. A novel adaptive multi-path routing protocol with the maximum path lifetime is proposed. By calculating the lifetime of links without the aid of positioning equipments and extra control messages, the partial-disjoint multi-path can be established...
Call Admission Control (CAC) mechanism can protect the existing flows from being disturbed by the newly added flows, which can ensure the quality of service (QoS) of Mobile Ad hoc Networks (MANET). We proposed a routing mechanism with distributed CAC algorithms for MANET based on IEEE802.11e EDCA MAC protocol. A new flow can be admitted by the network only if it can find a path to sustain its traffic...
One critical issue for routing in Mobile Ad Hoc Networks (MANET) is how to select a reliable path that can last longer since mobility may cause links to break down frequently. Based on the estimated link lifetime, a novel routing mechanism is proposed in this paper. In order to describe the received signal strength continuously, the Newton interpolation polynomial is constructed according to several...
Networks on chips (NoCs) provide a mechanism for handling complex communications in the next generation of integrated circuits. At the same time, lower yield in nano-technology, makes self repair communication channels a necessity in design of digital systems. This paper proposes a reliable NoC architecture based on specific application mapped onto an NoC. This architecture is capable of recovering...
Three applications in wireless networks where model-free stochastic learning is applicable, are discussed. The learning based optimization problems are formulated and simulation results are presented. Some open issues are also discussed.
This paper presents a distributed fermat-point range estimation strategy, which is important in the moving sensor localization applications. The fermat-point is defined as a point which minimizes the sum of distances from three sensors inside a triangle. This point is indeed at the trianglepsilas center of gravity. We solve the problems of large errors and poor performance in the bounding box algorithm...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
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