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DOI: 10.1109/WoWMoM.2014.6918995

Understanding differences in MAC performance

Gaugel, T.; Mittag, J.; Hartenstein, H.; Ström, E.

The suitability and performance of medium access protocols in vehicular environments is already being investigated over a long period of time. Carrier Sense Multiple Access (CSMA) has been shown to perform sufficiently well in most situations and being able to support safety and efficiency vehicular applications. Recently, Self-organizing Time-Division Multiple Access (STDMA) is being considered as an alternative and has been shown to coordinate the channel slightly better under certain situations. However, when comparing both protocols the precise details of radio and network conditions and parametrization of the protocols are decisive on which protocol takes a slight lead. Consequently, scenarios can be constructed quite easily in which one protocol is superior over the other one. The focus of this work is thus not to absolutely compare both protocols, but rather to understand the strengths and weaknesses of both protocols in certain situations. In particular, we consider i) to which degree hidden nodes influence the coordination ability, ii) how an extended carrier sensing range is beneficial and iii) how temporary fading influen ... mehr

Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Steinbuch Centre for Computing (SCC)
Publikationstyp Proceedingsbeitrag
Jahr 2014
Sprache Englisch
Identifikator KITopen ID: 1000041131
Erschienen in IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2014, 16-19 June 2014 Sydney, Australia
Seiten 6 S.
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