Wireless mesh network

About: Wireless mesh network is a research topic. Over the lifetime, 13600 publications have been published within this topic receiving 221035 citations. The topic is also known as: WMN.

Mesh AMR network interconnecting to mesh Wi-Fi network

Abstract: A wireless system for collecting metering data that includes a plurality of meters, a collector and a central communications server. The meters communicate usage data to either the collector or the central server via a Wi-Fi wireless communications. The Wi-Fi network can operate independently of, or in conjunction with, existing data gathering wireless networks.

Measurement and analysis of real-world 802.11 mesh networks

Abstract: Despite many years of work in wireless mesh networks built using 802.11 radios, the performance and behavior of these networks in the wild is not well-understood. This lack of understanding is due in part to the lack of access to data from a wide range of these networks; most researchers have access to only one or two testbeds at any time. In recent years, however, 802.11 mesh networks networks have been deployed commercially and have real users who use the networks in a wide range of conditions. This paper analyzes data collected from 1407 access points in 110 different commercially deployed Meraki wireless mesh networks, constituting perhaps the largest study of real-world 802.11 networks to date. After analyzing a 24-hour snapshot of data collected from these networks, we answer questions from a variety of active research topics, such as the accuracy of SNR-based bit rate adaptation, the impact of opportunistic routing, and the prevalence of hidden terminals. The size and diversity of our data set allows us to analyze claims previously only made in small-scale studies. In particular, we find that the SNR of a link is a good indicator of the optimal bit rate for that link, but that one could not make an SNR-to-bit rate look-up table that was accurate for an entire network. We also find that an ideal opportunistic routing protocol provides little to no benefit on most paths, and that "hidden triples"---network topologies that can lead to hidden terminals--are more common than suggested in previous work, and increase in proportion as the bit rate increases.

Reliability Assessment for Wireless Mesh Networks Under Probabilistic Region Failure Model

Abstract: Wireless networks in an open environment are exposed to various large region threats, e.g., natural disasters and malicious attacks. Available works with regard to region failures generally adopt a kind of “deterministic” failure models, which failed to reflect some key features of a real region failure. In this paper, we provide a more general “probabilistic” region failure model to capture the key features of a region failure and apply it for the reliability assessment of wireless mesh networks. To facilitate such an assessment, we develop a grid-partition-based scheme to estimate the expected flow capacity degradation from a random region failure. We then establish a theoretical framework to determine a suitable grid partition such that a specified estimation error requirement is satisfied. The grid partition technique is also useful for identifying the vulnerable zones of a network, which can guide network designers to initiate proper network protection against such failures. This paper helps us understand the network reliability under a region failure and facilitates the design and maintenance of future highly survivable wireless networks.

Energy efficiency and traffic offloading in wireless mesh networks with delay bounds

Abstract: SUMMARY In this paper, we study a wireless access network based on the Institute of Electrical and Electronics Engineers 802.11 standard and enriched with features such as caching and mesh networking. This system is analysed in terms of energy efficiency and traffic offloading, two objectives that are somewhat in contrast but both relevant to network and service providers as they directly impact the operational cost. In addition, QoS is also accounted for in the form of guaranteed bandwidth and bounded delay. To this aim, we developed a mathematical model of the system and solved it to optimality by means of integer linear programming. We can thus show how much can be saved both in terms of energy and traffic, also considering various tradeoff points among the two contrasting objectives. As a last step, we provide an investigation on the benefits of adding traffic aggregation features to the mathematical model. Copyright © 2014 John Wiley & Sons, Ltd.