IEEE 802.11: Multiple access
- Avoid collisions: two or more nodes transmitting at same time
- 802.11: CSMA - sense before transmitting
- Don’t collide with ongoing transmission by other node
- 802.11: no collision detection!
- Difficult to receive (sense collisions) when transmitting due to weak received signals (fading)
- Can’t sense all collisions in any case: hidden terminal, fading
- Goal: avoid collisions: CSMA/C(ollision)A(voidance)
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Project
Contact
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
This resource has been released under Creative Commons license CC-BY-SA 4.0.
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- Academic content – The University of Alcalá (https://www.uah.es/en/)
- Technical resource development – The University of the Highlands and Islands Educational Development Unit - EDU (edu@uhi.ac.uk)
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