Title :
Decentralized slot synchronization in highly dynamic ad hoc networks
Author :
Ebner, André ; Rohling, Hermann ; Lott, Matthias ; Halfmann, Rüdiger
Author_Institution :
Dept. of Telecommun., Tech. Univ. of Hamburg-Harburg, Hamburg, Germany
Abstract :
Ad hoc networks provide data communication services without being bound to an existing infrastructure. An exciting application of highly dynamic ad hoc networks is the exchange of data between running vehicles. For air-interfaces based on a slotted time division multiple access (TDMA) scheme, slot synchronization is required among the rapidly moving vehicles. A scheme for completely decentralized slot synchronization of nodes in an inter-vehicle communication (IVC) environment is presented. To evaluate the performance of the proposed mechanism, the influence of real synchronization to the network throughput in case of a slotted ALOHA medium access protocol is investigated. Simulation results indicate only a minor throughput degradation compared to an ideal slot synchronization.
Keywords :
access protocols; ad hoc networks; data communication; land mobile radio; multiuser channels; road vehicles; synchronisation; time division multiple access; TDMA; air-interfaces; data communication services; decentralized slot synchronization; dynamic ad hoc networks; inter-vehicle communication; network throughput; simulation results; slotted ALOHA medium access protocol; slotted time division multiple access; vehicles; Access protocols; Ad hoc networks; Frequency synchronization; GSM; Global Positioning System; Intelligent networks; Throughput; Time division multiple access; Timing; Vehicle dynamics;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088223
