scholarly journals A Reactive Wireless Mesh Network Architecture

2008 ◽  
pp. 203-214
Author(s):  
Bachar Wehbi ◽  
Anis Laouiti ◽  
Ana Cavalli
Keyword(s):  
Network Architecture ◽  
Wireless Mesh Network ◽  
Mesh Network ◽  
Wireless Mesh

Deployment of a Wireless Mesh Network for Traffic Control

2012 ◽  
pp. 290-310
Author(s):  
Kun-chan Lan ◽  
Zhe Wang ◽  
Mahbub Hassan ◽  
Tim Moors ◽  
Rodney Berriman ◽  
...  
Keyword(s):  
Traffic Control ◽  
Network Architecture ◽  
Wireless Mesh Network ◽  
Critical Infrastructure ◽  
Mesh Networks ◽  
New Technology ◽  
Mesh Network ◽  
Traffic Light ◽  
Wireless Mesh ◽  
Communication Needs

Wireless mesh networks (WMN) have attracted considerable interest in recent years as a convenient, new technology. However, the suitability of WMN for mission-critical infrastructure applications remains by and large unknown, as protocols typically employed in WMN are, for the most part, not designed for real-time communications. In this chapter, the authors describe a wireless mesh network architecture to solve the communication needs of the traffic control system in Sydney. This system, known as SCATS and used in over 100 cities around the world — from individual traffic light controllers to regional computers and the central TMC —places stringent requirements on the reliability and latency of the data exchanges. The authors discuss experience in the deployment of an initial testbed consisting of 7 mesh nodes placed at intersections with traffic lights, and share the results and insights learned from measurements and initial trials in the process.

Using Wireless Mesh Network for Traffic Control

2010 ◽  
pp. 331-347 ◽  
Author(s):  
Kun-Chan Lan
Keyword(s):  
Traffic Control ◽  
Network Architecture ◽  
Wireless Mesh Network ◽  
Mesh Networks ◽  
Great Majority ◽  
Mesh Network ◽  
Traffic Light ◽  
Available Bandwidth ◽  
Wireless Mesh ◽  
Communication Needs

Wireless mesh networks (WMN) have attracted considerable interest in recent years as a convenient, flexible and low-cost alternative to wired communication infrastructures in many contexts. However, the great majority of research on metropolitan-scale WMN has been centered around maximization of available bandwidth, suitable for non-real-time applications such as Internet access for the general public. On the other hand, the suitability of WMN for missioncritical infrastructure applications remains by and large unknown, as protocols typically employed in WMN are, for the most part, not designed for realtime communications. In this chapter, we describe a real-world testbed, which sets a goal of designing a wireless mesh network architecture to solve the communication needs of the traffic control system in Sydney, Australia. This system, known as SCATS (Sydney Coordinated Adaptive Traffic System) and used in over 100 cities around the world, connects a hierarchy of several thousand devices -- from individual traffic light controllers to regional computers and the central Traffic Management Centre (TMC) - and places stringent requirements on the reliability and latency of the data exchanges. We discuss some issues in the deployment of this testbed consisting of 7 mesh nodes placed at intersections with traffic lights, and show some results from the testbed measurements.

scholarly journals Performance Analysis on Hybrid Wireless Mesh Network Topology using Interference Aware Bandwidth Reservation

2019 ◽  
Vol 8 (2) ◽  
pp. 2666-2670
Keyword(s):  
Network Architecture ◽  
Wireless Mesh Network ◽  
Average Energy ◽  
Mesh Network ◽  
Network Simulator ◽  
Performance Parameters ◽  
Packet Size ◽  
Bandwidth Reservation ◽  
Wireless Mesh ◽  
Simulation Results

Ubiquitous of modern era which utilises Hybrid Wireless Mesh Network (HWMN) topology which gave birth to ample of modern application which demands reliability, fault tolerance and scalability. HWSN topology utilises minimum of two or multiple standard network architectural topologies, in a fashion that the resultant network architecture doesn’t depict any particular topologies like bus, star or ring but as a combination of any of those standard topologies. Prime motive of the proposed Optimised Channel Assignment Algorithm (OCSA) is which focuses on priority oriented interference minimization for all the trees which are existed, and constraint in terms of delay for evolving tree addition. Interference Aware Bandwidth Reservation (IABR) provides controllability over data flow admission for end-to-end optimal bandwidth accommodation in Multi-Radio Multi-Channel (MRMC) wireless mesh network. Proposed Priority Based Interference Aware Bandwidth Reservation (PBIABR) utilises disseminated and polynomialtime heuristic oriented assignment in channel to minimize interference in WMN with the awareness of channel priority as a primary consideration. Interference and Priority of the channel are made indirectly proportional to each other. For the channel of high priority the path which has low interference is opted. In PBIABR the whole path delay constraint of tree is sub organised into multiple node, based on delay to identify the best node which embodies minimal interference. Dominant Performance Parameters (DPP) like Throughput, Packet Size, Propagation Interval and Average Energy under HWSN Scenario. All the DPP parameters are analysed for multiple flow parameters for Interference Aware Bandwidth Reservation (IABR) and Proposed Priority Based Interference Aware Bandwidth Reservation (PBIABR) conditions. Simulation results have been captured using Network Simulator 2 tools for HWSN creation and crafted to same readings as a graph for deep analysis. The proposed simulation results for hybrid scenario highlights a considerable performance hike for the performance parameters like Throughput (bps) vs Packet size (bytes), Average Energy (joule) vs Interval (sec) and Residual Energy (joule) vs Interval (sec) under PBIABR conditions compared with IABR simulation outcome. The results have been analysed for comparative study of each parameter deeply. Inference from the comparative analysis highlights the performance parameters of PBIABR is efficient than IABR.

ORGANIZATION OF A DECENTRALIZED AND ANONYMOUS MESH NETWORK

2020 ◽  
pp. 42-47
Author(s):  
R. R. Abrarov ◽  
M. E. Burlakov
Keyword(s):  
Network Architecture ◽  
Wireless Mesh Network ◽  
Access Point ◽  
Transport Layer ◽  
Mesh Network ◽  
Home Network ◽  
Coverage Area ◽  
Neighboring Group ◽  
Wireless Mesh ◽  
Logical Topology

As part of this work, proposed the Mesh network architecture, which provides decentralization, security, anonymity and connection of devices without a dedicated router or Internet access. The nodes establish connections directly using Android P2P Wi-Fi technology, which complies with the Wi-Fi Direct standard. P2P Wi-Fi API organizes group communication and allows applications to connect to neighboring devices without the need for an Internet connection or access point. Despite the fact that in the Wi-Fi Direct standard there are no restrictions on connecting groups to each other, the Android Wi-Fi P2P API does not allow organize a connection between several groups. This is due to the fact that the IP addresses of owners of different groups in Wi-Fi Direct are always the same and unchanged. Communication between a P2P client and an inherited client that also owns another group is allowed in both directions. This provides connections between groups, where a P2P client acts as a proxy to access a neighboring group. Thus communication between nodes in a multigroup network is ensured through the use of transport layer tunnels installed in the logical topology and packet switching at the application level. When one or more nodes access the Internet, remote nodes outside the Wi-Fi coverage area communicate with the mesh through the application server. This architecture allows build a corporate, public or home network based on a wireless Mesh network, the nodes of which can be access points, computers and mobile devices of users.

The Research and Application of Key Technology on Wireless Multi-Hop Mesh Network

2013 ◽  
Vol 791-793 ◽  
pp. 1660-1663
Author(s):  
Ya Fang Lou ◽  
Zhi Jun Yuan
Keyword(s):  
Network Architecture ◽  
Wireless Mesh Network ◽  
Ad Hoc ◽  
Mesh Network ◽  
Network Technology ◽  
Typical Application ◽  
Key Technology ◽  
Wireless Mesh ◽  
The World ◽  
Mobile Ad Hoc

Wireless multi-hop mesh network (Wireless Mesh Network, WMN), is a new network technology developed from mobile Ad hoc, widely used in the world. The paper carried out in-depth research and outlook to the key technologies, network architecture, performance and characteristics and typical application scenarios of Wireless Mesh Network.

Scalable Wireless Mesh Network Architectures with QoS Provisioning

2010 ◽  
pp. 539-559
Author(s):  
Jane-Hwa Huang ◽  
Li-Chun Wang ◽  
Chung-Ju Chang
Keyword(s):  
Network Architecture ◽  
Wireless Mesh Network ◽  
Mesh Networks ◽  
Mesh Network ◽  
Optimization Approach ◽  
Network Architectures ◽  
Qos Provisioning ◽  
Wireless Mesh ◽  
Coverage Extension ◽  
Save Energy

The wireless mesh network (WMN) is an economical solution to enable ubiquitous broadband services due to the advantages of robustness, low infrastructure costs, and enhancing coverage by low power. The wireless mesh network also has a great potential for realizing green communications since it can save energy and resources during network operation and deployment. With short-range communications, the transmission power in the wireless mesh networks is lower than that in the single-hop networks. Nevertheless, wireless mesh network should face scalability issue since throughput enhancement, coverage extension, and QoS guarantee are usually contradictory goals. Specifically, the multi-hop communications can indeed extend the coverage area to lower the infrastructure cost. However, with too many hops to extend coverage, the repeatedly relayed traffic will exhaust the radio resource and degrade the quality of service (QoS). Furthermore, as the number of users increases, throughput and QoS (delay) degrade sharply due to the increasing contention collisions. In this chapter, from a network architecture perspective we investigate how to overcome the scalability issue in WMNs, so that the tradeoff between coverage and throughput can be improved and the goal of QoS provisioning can be achieved. We discuss main QoS-related research directions in WMNs. Then, we introduce two available scalable mesh network architectures that can relieve the scalability issue and support QoS in WMNs for the wide-coverage and dense-urban coverage. We also investigate the optimal tradeoff among throughput, coverage, and delay for the proposed WMNs by an optimization approach to design the optimal system parameters.

scholarly journals Software Defined Wireless Mesh Network Flat Distribution Control Plane

2019 ◽  
Vol 11 (8) ◽  
pp. 166 ◽  
Author(s):  
Elzain ◽  
Wu
Keyword(s):  
Network Architecture ◽  
Wireless Mesh Network ◽  
Mesh Networks ◽  
Rapid Development ◽  
Wireless Networking ◽  
Mesh Network ◽  
Topology Discovery ◽  
Control Plane ◽  
Status Change ◽  
Wireless Mesh

Wireless Mesh Networks (WMNs), have a potential offering relatively stable Internet broadband access. The rapid development and growth of WMNs attract ISPs to support users’ coverage anywhere anytime. To achieve this goal network architecture must be addressed carefully. Software Defined Networking (SDN) proposes new network architecture for wired and wireless networks. Software Defined Wireless Networking (SDWN) has a great potential to increase efficiency, ease the complexity of control and management, and accelerate technology innovation rate of wireless networking. An SDN controller is the core component of an SDN network. It needs to have updated reports of the network status change, as in network topology and quality of service (QoS) in order to effectively configure and manage the network it controls. In this paper, we propose Flat Distributed Software Defined Wireless Mesh Network architecture where the controller aggregates entire topology discovery and monitors QoS properties of extended WMN nodes using Link Layer Discovery Protocol (LLDP) protocol, which is not possible in multi-hop ordinary architectures. The proposed architecture has been implemented on top of POX controller and Advanced Message Queuing Protocol (AMQP) protocol. The experiments were conducted in a Mininet-wifi emulator, the results present the architecture control plane consistency and two application cases: topology discovery and QoS monitoring. The current results push us to study QoS-routing for video streaming over WMN.

scholarly journals Dynamic characteristics of mesh–based network control system under optimal resource circumstances

2012 ◽  
Vol 63 (5) ◽  
pp. 322-327 ◽  
Author(s):  
Dong Huang ◽  
Bigui He
Keyword(s):  
Control System ◽  
Dynamic Characteristics ◽  
Network Architecture ◽  
Wireless Mesh Network ◽  
Network Control ◽  
Control Flow ◽  
Mesh Network ◽  
Network Control System ◽  
Wireless Mesh ◽  
Optimal Resource

Network control system (NCS) has been presenting significance in industry and automation by supporting usability and convenience. However, for insufficiency for diversity of infrastructure and scalability, it has limitations in the field of flexibility for network architecture compared to the wireless mobile network. Hence, there shows the pressing need for tackling the existing network control system with control flow by wireless mesh network (WMN) with strong flexibility effectively. Consequently, for each control system, its stability is one of the prerequisites and criteria. In this paper, a novel optimization model was developed for planning the optimal resource utilization of wireless mesh network (WMN), and then the dynamic characteristics of mesh-based network control system are analyzed and discussed.

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