DocumentCode :
2728553
Title :
Synchronous distributed wireless network emulator for high-speed mobility: Implementation and evaluation
Author :
Koizumi, Minoru ; Ebata, Tomoichi ; Tsutsumi, Tomoaki ; Ohshima, Kohta ; Terada, Matsuaki
Author_Institution :
Yokohama Res. Lab., Hitachi, Ltd., Yokohama, Japan
fYear :
2012
fDate :
1-4 July 2012
Abstract :
Wireless network emulators provide various mobile node dynamic conditions and wireless links for real implementation of protocols to be evaluated based on user-defined mobility scenarios. The target of our proposed emulator is IP-based protocols for large-scale mobile wireless networks composed of a large number of high-speed vehicles. The requirements imposed by our target are high scalability and high-speed mobility emulation while maintaining high accuracy for many hours. To satisfy this, we first introduce a distributed architecture then propose an approach called “time-based wireless link emulation.” In this approach, the mobility scenario is converted into a wireless link schedule, and each distributed processor emulates a wireless link based only on the schedule and its clock, which is precisely synchronized with the other processor clocks by using IEEE 1588 PTPv2. Intensive experiments on the performance of the latest version of our prototype emulator show that (i) high-speed mobility emulation up to 200 m/sec with 0.1 M accuracy, (ii) packet delay emulation with 100 μsec accuracy, and (iii) time-stamps based measurement of elapsed time spent by test nodes with 100 μsec accuracy have been achieved. Our proposed emulator functioned well in an experiment with a simple protocol implementation for car-to-car/infrastructure communication.
Keywords :
IEEE standards; IP networks; mobile radio; protocols; radio networks; telecommunication standards; IEEE 1588 PTPv2; IP-based protocols; car-to-car/infrastructure communication; distributed processor; high-speed mobility emulation; high-speed vehicles; large-scale mobile wireless networks; mobile node dynamic conditions; packet delay emulation; synchronous distributed wireless network emulator; time 100 mus; time-based wireless link emulation; time-stamps based measurement; user-defined mobility scenarios; wireless link schedule; wireless links; Accuracy; Emulation; Protocols; Schedules; Synchronization; Wireless networks; IEEE 1588 PTPv2; clock synchronization; distributed wirelese network emulator; high-speed mobility;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computers and Communications (ISCC), 2012 IEEE Symposium on
Conference_Location :
Cappadocia
ISSN :
1530-1346
Print_ISBN :
978-1-4673-2712-1
Electronic_ISBN :
1530-1346
Type :
conf
DOI :
10.1109/ISCC.2012.6249264
Filename :
6249264
Link To Document :
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