The failure of CSMA in emerging wireless network scenarios
(2014) Wireless Days (WD), 2014 IFIP p.1-4- Abstract
- The current family of 802.11 protocols are based on the Carrier Sense Multiple Access (CSMA) mechanism which is a simple and robust means of sharing a channel. However, two current trends in wireless networks point towards a situation where CSMA fails to perform better than pure random access solutions such as ALOHA. The first trend is the ever increasing raw data rate in each generation of 802.11 which is set to continue with the current 802.11ax standardisation. The second is the move towards smaller frames as end users increasingly use mobile devices instead of desktop computers. We show that as the ratio of propagation delay to packet transmission time increases, the performance of CSMA degrades correspondingly, to the point where... (More)
- The current family of 802.11 protocols are based on the Carrier Sense Multiple Access (CSMA) mechanism which is a simple and robust means of sharing a channel. However, two current trends in wireless networks point towards a situation where CSMA fails to perform better than pure random access solutions such as ALOHA. The first trend is the ever increasing raw data rate in each generation of 802.11 which is set to continue with the current 802.11ax standardisation. The second is the move towards smaller frames as end users increasingly use mobile devices instead of desktop computers. We show that as the ratio of propagation delay to packet transmission time increases, the performance of CSMA degrades correspondingly, to the point where ALOHA outperforms CSMA. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5275507
- author
- Fitzgerald, Emma LU and Landfeldt, Björn LU
- organization
- publishing date
- 2014
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- IEEE 802.11 Standards Multiaccess communication Propagation delay Protocols Throughput Wireless LAN Wireless communication
- host publication
- [Host publication title missing]
- pages
- 4 pages
- conference name
- Wireless Days (WD), 2014 IFIP
- conference location
- Rio de Janeiro, Brazil
- conference dates
- 2014-11-12
- external identifiers
-
- scopus:84937807008
- DOI
- 10.1109/WD.2014.7020830
- project
- MESH-WISE - Self-organising MESH Networking with Heterogeneous Wireless Access
- ELLIIT LU P01: WP2 Networking solutions
- language
- English
- LU publication?
- yes
- id
- 79e5dd1e-80b2-46ca-988b-0965b5b93e38 (old id 5275507)
- date added to LUP
- 2016-04-04 13:39:38
- date last changed
- 2022-05-02 00:23:43
@inproceedings{79e5dd1e-80b2-46ca-988b-0965b5b93e38, abstract = {{The current family of 802.11 protocols are based on the Carrier Sense Multiple Access (CSMA) mechanism which is a simple and robust means of sharing a channel. However, two current trends in wireless networks point towards a situation where CSMA fails to perform better than pure random access solutions such as ALOHA. The first trend is the ever increasing raw data rate in each generation of 802.11 which is set to continue with the current 802.11ax standardisation. The second is the move towards smaller frames as end users increasingly use mobile devices instead of desktop computers. We show that as the ratio of propagation delay to packet transmission time increases, the performance of CSMA degrades correspondingly, to the point where ALOHA outperforms CSMA.}}, author = {{Fitzgerald, Emma and Landfeldt, Björn}}, booktitle = {{[Host publication title missing]}}, keywords = {{IEEE 802.11 Standards Multiaccess communication Propagation delay Protocols Throughput Wireless LAN Wireless communication}}, language = {{eng}}, pages = {{1--4}}, title = {{The failure of CSMA in emerging wireless network scenarios}}, url = {{http://dx.doi.org/10.1109/WD.2014.7020830}}, doi = {{10.1109/WD.2014.7020830}}, year = {{2014}}, }