Forthcoming and Online First Articles

International Journal of Mobile Network Design and Innovation

International Journal of Mobile Network Design and Innovation (IJMNDI)

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International Journal of Mobile Network Design and Innovation (7 papers in press)

Regular Issues

  • A distributed monitoring scheme for a fleet of UAV flying drones   Order a copy of this article
    by Amine Nouasri, Mohamed Amine Riahla 
    Abstract: In this paper, we present a solution that would allow members of a UAV drone fleet to cooperate with each other in order to monitor the network regarding incidents that could compromise security or impact service continuity during their mission. The proposed work implements a scheme to allow each drone to monitor the activity of immediate neighbours without a central control authority, and share that information. This is in order to decide of an action in case of a security incident or a degradation of their service has occurred. The purpose is to allow the network to be resilient and adopt itself to insure service continuity. The method we used allow the detection of incidents without the use of complex security and routing solutions, or the need to communicate back and forth with a central control authority. Our method uses four parameters to insure service continuity in the network: Link Quality, Forwarding Rate, Checksum Rate and Mobility Coordinates. This is to allow the detection of multiple incidents using the same scheme.
    Keywords: Drones; fleet; Security; Cooperation; Service Continuity; Link Quality; Forwarding Rate; Checksum Rate; Mobility Coordinates.

  • Triangle Based Partitioning with Multiple Mobile Sinks on Predetermined Trajectory for Enhancing the Sensor Network Lifetime   Order a copy of this article
    by Jayanthi Vagini, PRADEEPA .K 
    Abstract: Utilizing mobile entities in wireless sensor network is the recent research attraction because of its numerous benefits. The paper suggests on quadrant division of network and deployment of mobile data collectors in each quadrant. Each quadrant is assigned with multiple Data Collection Points (DCPs) with an energy rich node designated as sink node. We propose a clustering algorithm for the sink node to form clustering trees for data collection from sensor nodes. We also optimize the trajectory path of the mobile data collector by using a linear programming formulation. The data collector travels along the optimized trajectory route to visit sink nodes at each DCP to aggregate the data. Simulations are done to measure the performance of the proposed algorithm in terms of network lifetime, average energy consumption, number of live and dead nodes. The proposed algorithm showcase a good performance in comparison with the existing schemes
    Keywords: Wireless sensor network; Mobile data collector; Sink; clustering; Data collection points; predetermined trajectory; Triangle partition.

  • Mobile Cluster Heads on Energy Conscious Predetermined Trajectory to Minimize the Energy Hole Problem in Wireless Sensor Network   Order a copy of this article
    by Pradeepa K, Rakesh K 
    Abstract: Mobile elements are used in wireless sensor network to increase the longevity by minimizing the overloading of one hop sensors. Mobility has proven useful in reducing the energy hole formation by balancing the load among the sensor nodes. The paper deploys mobile cluster heads to move along a predetermined trajectory for data collection. As autonomous moving strategies impose heavy overhead and data latency issues, predetermined trajectories have proven successful in improvising the network lifetime. The contributions of the paper are twofold. First we have proposed a trajectory model along with a cluster formation procedure for the cluster heads to involve in data collection. The cluster heads stop for a fixed time duration t at each rendezvous point for data collection. Second we have proposed a mathematical formulation to optimize the sojourn time duration of the cluster head based on the one hop residual energy of the sensor nodes.
    Keywords: Keywords: Wireless Sensor Network; Cluster head; clustering; Rendezvous points; Network Lifetime; Data Collector.

  • Directional Antenna with reproduction optimization (BFOA) used in Mobile Ad-hoc Network   Order a copy of this article
    by Manoj Kuri, Mohit Srivastava, Vishal Kumar Goar, Amandeep Kumar 
    Abstract: In this work we applying RDA with BFOA optimizing algorithm for MANET or WSNs are respected meager. In existing work, re-change directional antenna carries new opportunities to recoup and optimize the information collision in WSNs. Based on received cycle (RDA-RICHER) medium access control rules for WSN sensor hubs devices, various methods are studying the re-configurable directional antenna. Numerous works have been done to distinguish the WSN utilizing the RDA model which altogether diminishes the utilization of energy. This situation of utilization the energy is just material to the constrained hub trusts with it. This confinement of the single expectation and energy effectiveness is the issue to be attempted in this work utilizing Bacteria foraging optimization and assess the optimized energy consumption, streamline idleness, received signal quality and collision rates in percentage.
    Keywords: Wireless sensor network; Mobile; Directed Antenna; RDA-RICHER; MANET and OPTIMIZATION process;.

  • A Low-Complexity Demodulation for Oversampled LoRa Signal   Order a copy of this article
    by Vincent Savaux 
    Abstract: This paper deals with a demodulation technique for oversampled LoRa signal. The usual maximum likelihood (ML) based demodulation method for LoRa chirp spread spectrum (CSS) waveform is dedicated to signals sampled at Nyquist rate, whereas considering oversampled signals may improve the performance of the LoRa demodulation process. Accordingly, when an oversampling rate (OSR) 2 is assumed, the suggested method consists in applying two demodulation processes to the even and odd samples of the oversampled LoRa signal, and then combining the results. This principle is then generalized to any OSR, and we show that the complexity of the method is low since it only involves discrete Fourier transforms (DFT). Moreover, a performance analysis in terms of symbol and bit error rate (SER and BER) is presented considering both additive white Gaussian noise (AWGN) and Rayleigh channel models.
    Keywords: LoRa; Demodulation; Equalization; Maximum Likelihood; Low-complexity.

  • An Improved Demodulation for LoRa Through a Threshold-Based Detection of Error   Order a copy of this article
    by Vincent Savaux 
    Abstract: This paper deals with an improved demodulation technique for LoRa signal. The principle consists in detecting the possible errors of demodulation, by comparing the highest peak of the periodogram of the dechirped received signal weighted by a coefficient beta with the other peaks of the periodogram. If an error is detected, a second demodulation stage is processed at an oversampling rate (OSR) higher than the first demodulation stage. Otherwise, the result of the first demodulation is kept. A thorough performance analysis of the suggested technique, based on order statistics, is provided, in terms of detection rate, error rate, and complexity. It is shown that beta can be tuned to adjusts the trade-off between performance and complexity. Moreover, simulations results shows that possibility, for relatively low signal-to-noise (SNR) values, to reach the performance of the demodulation at highest OSR while keeping the complexity of the demodulation at lowest OSR.
    Keywords: LoRa; Demodulation; Detection; Order Statistics.

  • Target Codes   Order a copy of this article
    by Munibun Billah, Janak Sodha, Todd Moon 
    Abstract: A new type of error-control code is proposed in which a signal point within the modulator signal constellation diagram is selected as the target signal point. An incoming signal point is then encoded by using the number of steps along a pre-defined path to the target point. By introducing a state variable, trellis based decoding is made possible. The encoding process is generalised for M-ary QAM with high rate encoding to present the BER performance of Signal Point Target Codes (SPTCs) over QPSK, 16-QAM, 64-QAM and 256-QAM signal constellations. Free Euclidean distance calculations are used to modify the encoding algorithm to develop Constellation Arithmetic Codes (CACs) with an improved coding gain. For example, a rate 2/3 CAC code using partial parallel encoding provides a BER coding gain of 5.5 dB over uncoded 64-QAM.
    Keywords: Convolutional Codes; Block Codes; Shape Codes; Error-Control; QPSK; QAM.