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In order to improve localization accuracy in mobile sensor network, based on quadratic programming-unscented Kalman filter (QP-UKF) and multidimensional scaling-MAP (MDS-MAP) methods, this paper studies node localization in mobile sensor networks. First, from the perspective of wireless sensor network overall localization, a nonlinear dynamic relative motion model for sensor network units is established...
In this paper, the Beidou satellite navigation system based on the establishment of Beidou Positioning base station, select the cloud platform RTK forwarding mode, using ARM9 processor as the main controller, through the PID to adjust the output control signal, sending CAN communication instructions to control the hydraulic system to complete the intelligent agricultural machinery automatic control,...
While the bandwidth and latency improvement of both WiFi and cellular data networks in the past decade are plenty evident, the extent of signal strength fluctuation and network disruptions (unexpected switching or disconnections) experienced by mobile users in today's network deployment remains less clear. This paper makes three contributions. First, we conduct the first extensive measurement of network...
In some special circumstances, e.g. tsunamis, floods, battlefields, earthquakes, etc., communication infrastructures are damaged or non-existent, as well as unmanned aerial vehicle (UAV) cluster. For the communication between people or UAVs, UAVs or mobile smart devices (MSDs) can be used to construct Mobile Ad Hoc Networks (MANETs), and Multipath TCP (MPTCP) can be used to simultaneously transmit...
In this paper, the performance of the toroidal cellular simulation structure under users' mobility, time-varying traffic, and dynamic channel assignment is evaluated. The toroidal cellular simulation structure has been proposed to effectively eliminate the so called edge effect (elimination of the inflow/outflow of handoff traffic streams to/from the examined area). However, in the toroidal cellular...
In recent years, dramatic growth of mobile data traffic has left the operators no choice but to consider Wi-Fi networks as an economic complementary solution. To achieve this, WLANs require to adopt some of the key features of carrier-grade operators, such as centralized resource management. As an emerging paradigm, Software Defined Networking (SDN) can be used to provide salient centralized network...
Wireless Mesh Network (WMN) is an upcoming technology that supplements wired infrastructure with wireless backbone to provide Internet connectivity to mobile nodes (MN) or users in residential areas and offices. Here the each wireless backbone node operates both as a wireless router that forwards packets of other nodes & as a wireless bridge transmitting the packets of its clients WMN has the...
Increasing demand in multimedia streaming has led to the advancement of Internet speed, reliability and other techniques. The 3GPP LTE network uses eMBMS protocol for broadcasting and multicasting the multimedia streaming, still the base station overloading has become an alarming issue due to the growing need of the mobile users. Since bandwidth is scares and limited, many emerging fields such as...
Automated facial expression recognition (AFER) is a crucial technology to and a challenging task for human computer interaction. Previous methods of AFER have incorporated different features and classification methods and use basic testing approaches. In this paper, we employ the best feature descriptor for AFER by empirically evaluating the feature descriptors named the Facial Landmarks descriptor...
This paper considers the problem of joining a network of constrained IoT devices. We propose to take advantage of Singer Cyclic Difference Sets (S-CDS) for a joining scheme that results in low duty cycles and apply the proposed scheme to the joining problem in 802.15.4e TSCH networks. S-CDS distributes the active periods of nodes over time so that a joining node does not suffer from long scanning...
In mobile wireless sensor networks (MWSNs), each sensor has the ability not only to sense and transmit data but also to move to some specific location. Because the movement of sensors consumes much more power than that in sensing and communication, the problem of scheduling mobile sensors to cover all targets and maintain network connectivity such that the total movement distance of mobile sensors...
In some special circumstances, e.g. tsunamis, floods, battlefields, earthquakes, etc., communication infrastructures are damaged or non-existent, as well as unmanned aerial vehicle (UAV) cluster. For the communication between people or UAVs, UAVs or mobile smart devices (MSDs) can be used to construct Mobile Ad Hoc Networks (MANETs), and Multipath TCP (MPTCP) can be used to simultaneously transmit...
Lattice codes used under the Compute-and-Forward paradigm suggest an alternative strategy for the standard Gaussian multiple-access channel (MAC). It has been proven that decoding an integer linear combination of the transmitted codewords enables higher data rates compared to decoding the messages individually. Recent work of Gasptar et al. proposed a new multiple access channel technique that they...
In distributed Smart Farming applications, a reliable communication is often crucial, in particular during collaborating operations. In rural areas, the network connectivity via Public Land Mobile Networks is, however, not always sufficient. Network disruptions may occur hindering reliable transmissions. For the delivery of periodic sensor data streams of agricultural machines, several modern communication...
Increased Caching Capability is one of the main benefits of Information-Centric Networking and a necessity for highly mobile ad-hoc networks such as VANETs. Hence, it is crucial to efficiently store items to improve resource utilization, increasing cache efficiency, reducing network load. In this paper, we propose a cache content insertion policy, UG-Cache, for ICN-VANETs. In UG-Cache, cache insertion...
The wide diffusion of mobile devices that natively support ad hoc communication technologies has led to a number of protocols for enabling and optimizing Mobile Ad Hoc Networks (MANETs). Nevertheless, the actual utilization of MANETs in real life is still limited, in part due to the lack of protocols for the automatic creation and evolution of ad hoc networks. Recently, a novel ad hoc protocol named...
The problem of coverage in three-dimensional (3D) wireless sensor networks is challenging and hard. In this paper, we focus on the problem of k-coverage of a 3D field of interest (FoI), where every point is covered by at least k sensors. First, we propose three sensor placement strategies to guarantee k-coverage of a 3D FoI. Second, we compute the corresponding sensor density. Third, we investigate...
In a mobile campus, the information and services related to location are really needed. Because satellite positioning systems can't afford locational requirement in bad outdoor scenario and indoor situation, the method of cooperative positioning provided another way to solve this problem. Aimed at the problem in which the unknown nodes in outdoor get a poor localizability for linking less sufficient...
MPEG has recently proposed Server and Network Assisted Dynamic Adaptive Streaming over HTTP (SAND-DASH) for video streaming over the Internet. In contrast to the purely client-based video streaming in which each client makes its own decision to adjust its bitrate, SAND-DASH enables a group of simultaneous clients to select their bitrates in a coordinated fashion in order to improve resource utilization...
Due to the increased usage of smart phones, mobile users now have access to a diverse set of services. These mobile services have increased the demand for faster wireless networks. In this paper, we examines mobility support functions in soft handoff for IP-based mobile network, and distinguishes the control areas in the cell's range areas for mobile network's efficient session control (SC). Based...
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