Wireless Mesh Sensor Networks with Mobile Devices: A Comprehensive Review

Wireless Mesh Sensor Networks with Mobile Devices: A Comprehensive Review

Carlos Meralto, José Moura, Rui Marinheiro
Copyright: © 2017 |Pages: 27
DOI: 10.4018/978-1-5225-0486-3.ch005
OnDemand:
(Individual Chapters)
Available
$33.75
List Price: $37.50
Current Special Offers
10% Discount:-$3.75
TOTAL SAVINGS: $3.75

Abstract

Mesh communications is emerging as a popular networking solution. Mesh networks have a decentralized and multihop design. These characteristics arouse interest for the research of the following features: cooperation, task distribution, scalability and communication with limited infrastructure support. This chapter studies relevant solutions in Wireless Sensor Networks (WSNs) with a mesh design that is used with mobile devices. The use of mobile devices on WSNs has recently grown due to: hardware evolution, large number of embedded sensors and daily high utilization of handheld devices. Consequently, novel requisites in the design and implementation of WSNs urge to be satisfied: autonomy of sensors battery and, efficient data exchange amongst sensors and the Internet. A real mesh testbed with two Layer 2 mesh solutions (Open802.11s and B.A.T.M.A.N) was implemented with different topologies. Some relevant results for a mesh network are discussed in terms of its scalability, performance and volatility.
Chapter Preview
Top

2. Mesh Networks Implemented With Mobile Devices

WMNs on MDs have been the focus of various projects and feature a wide variety of solutions. It is necessary to analyze and compare relevant solutions, finding out relevant features to be implemented, especially in mesh scenarios with handheld MDs. The implementation of a WMN with MDs can be done at different OSI layers. The standard mesh solution (“802.11s - IEEE Standard for Information Technology,” 2011) is implemented at Layer 2. There are also implementations at Layer 2.5 (with additional software between Layers 2 and 3), Layer 3 and Layer 7.

The Open Garden (“Open Garden,” 2014) is an implementation of WMNs focused on establishing a connection among devices in situations where there is no coverage or network capacity. It allows routing and multihop discovery so that users can share their own WiFi/3G/4G connection, which operates as a model of “crowd-source bandwidth”. This solution uses the application layer to implement the WMN.

Key Terms in this Chapter

Discovery Time: The elapsed time since a node A sent an ARP request message until node A updated the ARP table and sent the ICMP ping request to node B.

Intra-Flow Interference: Occurs when nodes on the same path or flow with the same channel competing between each other for channel bandwidth.

Inter-Flow Interference: Caused by other flows that are operating on the same channel and competing for the medium.

Isotonicity: Property implies that the order of the weights of two paths must be preserved when we append or prefix a common third path on the two paths.

Bootstrap Time: The elapsed time since a router was added to an existing network to discover all the remaining nodes.

Complete Chapter List

Search this Book:
Reset