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Industrial wireless mesh networks are deployed in harsh and noisy environments for process measurement and control applications. Compared with wireless community networks, they have more stringent requirements on communication reliability and real-time performance. Missing or delaying of the process data by the network may severely degrade the overall control performance. In this paper, we abstract...
Wireless sensor networks may be utilized for various application areas such as health, military, home, and so on. In the wireless sensor networks, data transmission typically relies on multi-hop communication with high packet loss rates on wireless links so that reliable end-to-end data transmission is desirable. Recently, in order to achieve desired Communication Reliability (CR) levels of the various...
In wireless sensor networks (WSNs), multi-path routing can find multiple paths from source node to sink node. In data transmission, multiple paths can be used to improve reliability, energy-efficiency, etc. In the literature, there have been many works about multi-path routing. But those multi-path routing protocols are not efficient as they cost much time and energy to construct multiple paths. In...
In wireless sensor networks due to its strict resource constraints (with a lower energy, weak processing power), routing protocols should be simple and efficient as the goal, to maximize the extension of the life cycle of the entire wireless network. This paper presents a cross-layer optimization algorithm with the integration of MAC layer and routing layer to meet the requirements of energy-efficiency...
Wireless sensor networks (WSNs) usually work under harsh environment, so high packet loss rate is induced by the unreliable and error-prone wireless links. To cope with the problem, a competition and cooperation based reliable forwarding protocol (CCRF) is proposed. In CCRF, the characteristic of dense deployment of sensor nodes and broadcast feature of the wireless channel in WSN are utilized. Specifically,...
A distributed control net based on low voltage PLCC (Power Line Carrier Communication) transceiver PL2101 was built. Measures of advancing communication reliability such as fast routing lookup configuration, net identification code and CRC code were excogitated, so the net can watch 255 field bittern pumps within 2 kilometer at 500 bps with no transmission repeaters. The paper discusses the network...
As a sensor network has a limited node resources and unexpected changes of external environment, its nodes should show energy efficiency, reliable data transmission, and topological adaptation to the change of external environment. However, it is not easy to satisfy these requirements at the same time. This study proposes Robust and Energy efficient Dynamic Single path routing (REDS), a routing mechanism...
In this paper, a cluster-based data gathering algorithm ECDGA for mobile wireless sensor networks is proposed. Network model includes mobile nodes and fixed nodes. The former constructs cluster by self-organizing according to the distance between the fixed nodes nearby and themselves. The latter selects cluster head in accordance with the residual energy and location of the mobile nodes around, and...
In many wireless sensor network applications have a demand for high reliability transmission, in view of this need to design and achieve a reliable multi-path routing (RMR) protocol is a suitable application for wireless sensor network. In the trunk path failure through the path of transmission of data backup methods, the routing protocol improves reliability of data transmissions by the agreement...
Congestion avoid in wireless sensor networks is a critical issue, it will not only affect transmission reliability, and will waste valuable energy resources. In order to reduce the wireless sensor network routing instability, we proposed a novel altering routing congestion control protocol for wireless sensor networks (CAAR). In this paper, we develop: 1) based on cognition detection technology to...
Aiming at reliable data delivery in wireless sensor networks, virtual multipath routing (VMR) protocol is proposed. The defining aspect it differs from the traditional ones is it integrates path quality probing, data transmission and route optimization together. In this protocol, multiple paths are engaged in data delivery; meanwhile accumulated transmission times (ATT) of each packet from source...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
3D contactless technology based on capacitive coupling represents a promising solution for high-speed and low power signaling in vertically integrated chips. AC coupled interconnects do not suffer from mechanical stress, and the parasitic load is much reduced when compared to standard DC solutions, such as wire bonding and micro bumps. Communication system based on wireless interconnection scheme...
This paper proposes a fast forward medium access control protocol (FFMAC) for quality-of-service (QoS) guarantee in multihop IEEE 802.11s wireless mesh networks with multiple channels. To the best of our knowledge, the proposed protocol is the first one which considers the multihop and multichannel issues simultaneously. It provides higher priority for real-time applications, while remaining the distributed...
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