Abstract
Mobile wireless sensor network (MWSN) has recently attracted considerable attention. It can simply be defined as WSN in which mobility plays a key role in the execution of the application. Both academia and industries are now focusing on developing MWSNs not only for the Internet, but also for other applications, such as target tracking, traffic monitoring, urban microclimate, and disaster monitoring. The challenges for such networks not only encompass a broad spectrum of research topics but also involve envisioning new multidisciplinary applications that will change the way in which we live and work. The authors have focused on relay cooperation models based on the network coding, node localization, spectrum sensing, neighbor discovery, congestion control, and clock synchronization, and so forth.
The paper “Data dissemination in mobile wireless sensor network using trajectory-based network coding”, by L. Li et al., investigates the mobile nodes to forward data referring to their trajectory information. It is designed according to the characteristics of MWSN and appropriate for the mobile nodes that share anonymously its prepath for the higher bandwidth. Network coding is used to adapt for the dynamics velocity of mobile nodes. The method improves the reliability and scalability of MWSN in any scenario and benefits its deployment.
The paper “A routing algorithm based on dynamic forecast of vehicle speed and position in VANET”, by H. Huang and S. Zhang, proposes the concept of circle changing trends angle in vehicle speed fluctuation curve and the movement domain. It designs an SWF routing algorithm based on the vehicle speed point forecasted and the changing trends time computation. The algorithm has a certain degree of improvement in routing hops, the packet delivery ratio, delay, and link stability.
In the paper “Research on vehicle automatically tracking mechanism in VANET” by L. Wang et al., the authors make some useful explorations in the fields of intelligent vehicle control technology and obstacle avoidance. The deep research is carried out about the distance of vehicle, vehicle tracking, vehicle lane changing and intersections obstacle avoidance and communication protocols. Some innovative ideas are proposed during the research.
In the paper “Congestion control based on consensus in the wireless sensor network” by X. Yang et al., the authors novel introduce a congestion control algorithm (CC-CA). NS simulation results indicate that the proposed algorithm restrains the congestion over the wireless sensor network, maintains a high throughput and a low delay time, and also improves the quality of service for the whole network.
In the paper “EasiND: neighbor discovery in duty-cycled asynchronous multichannel mobile WSNs” by T. Huang et al., the authors present an EasiND protocol for MWSNs. The proposed neighbor discovery system based on quorum system can bound the discovery latency in multichannel scenarios with low power consumptions. The proposed optimal asynchronous neighbor discovery system can minimize the power consumption with bounded discovery latency.
The paper “Spectrum sensing for cognitive coexistent heterogeneous networks”, by B. Zhao et al., proposes a spectrum sensing scheme for the cognitive coexistent heterogeneous networks. In this scheme, the power decomposition is formulated into a problem of solving a nonhomogeneous linear equation matrix. Both the analysis and the simulation results show the feasibility and efficiency of the proposed scheme.
The paper “A type of localization method using mobile beacons based on spiral-like moving path for wireless sensor networks”, by C. Sha and R.-C. Wang, proposed a type of energy optimization localization method for MWSN. Traverse point is marked with the help of the optimum deployment model. According to the moving path and the localization time, energy consumption of the network could be estimated, and the sleep scheduling strategy for the node is localized.
The paper “A comparison of clock synchronization in wireless sensor networks”, by S. Youn, examines the clock synchronization issues in WSN. A comparison of different clock synchronization algorithms in wireless sensor networks with a main focus on energy efficiency, scalability, and precision properties of them are provided in the paper.
In the paper “LIRT: A lightweight scheme for indistinguishability, reachability, and timeliness in wireless sensor control networks” by W. Ren et al., the authors make the first attempt to specify the security requirements for WSCNs. In addition, several new attacks in WSCN are pointed out at the first time. A lightweight scheme LIRT is proposed with tailored design to guarantee the indistinguishability, reachability, and timeliness inWSCNs.
The paper “Face recognition in mobile wireless sensor networks”, by Q.-M. Lin et al., presents a new wireless sensing network paradigm for face recognition applications. In addition to the flexibility the face recognition system gains by integrating into a wireless sensor network, they take it further by introducing mobility into the network to improve the sensing coverage area and cost efficiency. A multilayered network structure and Gauss-Markov mobility model are proposed.