Title :
An analysis of performance degradation caused by hidden terminal and its improvement in Inter-Vehicle communication
Author :
Kuge, Takamasa ; Ohno, Kohei ; Itami, Makoto
Author_Institution :
Dept. of Appl. Electron., Tokyo Univ., Noda, Japan
Abstract :
The CSMA scheme that is widely adopted as a media access control in Inter-vehicle communication systems has a hidden terminal problem. And this influence has not yet been analyzed in detail and it is necessary to know the actual influence in order to take appropriate steps against this problem. In this paper, the number of packet collisions that are caused by hidden terminals is analyzed and packet loss rate is shown quantitatively. And it is shown how this problem is improved by using spread spectrum (SS) communication scheme by computer simulation. As a result, it is confirmed that the number of packet collisions that are caused by hidden terminals occurs more than that are caused by carrier sense failures. Moreover, it is also confirmed that packet loss rate can be reduced to up to one-third of the conventional CSMA scheme by using the proposed SS scheme.
Keywords :
carrier sense multiple access; computer networks; mobile computing; mobile radio; road vehicles; spread spectrum communication; traffic engineering computing; CSMA; hidden terminal; intervehicle communication; media access control; packet collisions; packet loss rate; performance degradation; spread spectrum communication; Collision avoidance; Computer simulation; Degradation; Delay; Multiaccess communication; Performance analysis; Remotely operated vehicles; Road accidents; Spread spectrum communication; Vehicle safety; DS/SS; Hidden Terminal; Inter-Vehicle Communication(IVC); Multi Code Sense(MCS); p-persistent CSMA;
Conference_Titel :
Intelligent Transport Systems Telecommunications,(ITST),2009 9th International Conference on
Conference_Location :
Lille
Print_ISBN :
978-1-4244-5346-7
Electronic_ISBN :
978-1-4244-5347-4
DOI :
10.1109/ITST.2009.5399307
