Title :
DMQR: A spatial routing protocol to enable VoIP over high-mobility wireless multihop networks
Author :
Gohari, Amir Aminzadeh ; Rodoplu, Volkan
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, Santa Barbara, CA, USA
Abstract :
We develop a space-centric routing protocol to enable the delivery of mobile VoIP over high-mobility multi-hop wireless networks. The novel aspect of this protocol is the attribution of network and MAC layer congestion to space, which provides delay guarantees over much longer durations than can be achieved by node-centric routing protocols. The presented protocol constructs a spatial map of network congestion and utilizes this map to reactively find routes over space (cells) rather than individual nodes. The amount of congestion in each cell is tracked proactively by measurements of experienced local delay and is quickly disseminated among the nodes. Through QualNet simulations, we demonstrate substantial improvements in comparison with AODV and LAR over a realistic terrain with obstacles, for a wide range of node densities and velocities.
Keywords :
Internet telephony; access protocols; quality of service; routing protocols; DMQR; MAC layer congestion; QoS routing protocol; QualNet simulations; delay map; high-mobility wireless multihop networks; mobile VoIP; network congestion; node-centric routing protocols; space-centric routing protocol; spatial routing protocol;
Conference_Titel :
GLOBECOM Workshops (GC Wkshps), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-8863-6
DOI :
10.1109/GLOCOMW.2010.5700134