Performance evaluation of R-ALOHA for inter-vehicle communications at millimeter waves

The suitability of the R-ALOHA protocol for short range inter-vehicle communications in highway environments is investigated. In the context of road transport information (RTI) applications (such as, e.g., cooperative driving), in Europe the 63.5 GHz band has been recommended for inter-vehicle communications. Hence, network performance has to be evaluated by assuming a suitable propagation model; the joint impact of random access, interference, thermal noise, propagation and packet capture effect, is taken into account. The results obtained by means of a software tool that is able to simulate a one-lane highway scenario are presented. The simulation approach allows the evaluation of the impact of protocol parameters (such as, e.g., the number of slots per frame) on network performance. Only non-steady-state situations are analysed.

[1]  M. Chiani,et al.  Millimetre Wave Short Range Communications for Advanced Transport Telematics , 1993, Eur. Trans. Telecommun..

[2]  W. Schafer,et al.  Channel modelling of short-range radio links at 60 GHz for mobile intervehicle communication , 1991, [1991 Proceedings] 41st IEEE Vehicular Technology Conference.

[3]  Roberto Verdone,et al.  Multihop R-ALOHA for intervehicle communications at millimeter waves , 1997 .

[4]  Marco Chiani,et al.  Impact of cochannel interference on vehicle-to-vehicle communications at millimeter waves , 1992, [Proceedings] Singapore ICCS/ISITA `92.

[5]  S. Takaba,et al.  A network architecture of the inter-vehicle packet communication system , 1994, Proceedings of VNIS'94 - 1994 Vehicle Navigation and Information Systems Conference.

[6]  Te-Kai Liu,et al.  Performance evaluation of R-ALOHA in distributed packet radio networks with hard real-time communications , 1995, 1995 IEEE 45th Vehicular Technology Conference. Countdown to the Wireless Twenty-First Century.

[7]  Roberto Verdone.  Time and frequency selectivity effects in vehicle-to-vehicle communications at 60 GHz , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).