Wireless networks
Depending on the number of hops and the existence of an infrastructure we have the following wireless network taxonomy:
Figure 29 Wireless Network taxonomy defined in terms of the number of hops and the existence of an infrastructure
Important differences from wired link …
- Decreased signal strength: radio signal attenuates as it propagates through matter (path loss)
- Interference from other sources: standardized wireless network frequencies (e.g., 2.4 GHz) shared by other devices (e.g., phone); devices (motors) interfere as well
- Multipath propagation: radio signal reflects off objects ground, arriving ad destination at slightly different times
- Hidden terminal problem: two or more stations connected to other station cannot hear each other
The figure below shows different wireless technologies in terms of distance and bitrate.
Figure 30 Distance vs bitrate for different wireless network technologies
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This resource was developed as part of an Erasmus+ project, funded with support from the European Commission under grant agreement 2016-1-SE01-KA203-22064.
The project was a collaboration between:
- The University of Borås, Sweden
- The University of the Highlands and Islands, Scotland
- The University of Alcalá, Spain
- Digital Connections, Scotland
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