Paper Info
Title
Virtual-MIMO-Based Information Propagation for Highway Vehicular Networks.
Abstract
In vehicular communications, traffic-related information should be spread over the network as quickly as possible to maintain a safer transportation system. This motivates us to develop more efficient information propagation schemes. In this paper, we propose a novel virtual-MIMO-enabled information dissemination scheme, in which the vehicles opportunistically form virtual antenna arrays to boost the transmission range and therefore accelerate information propagation along the highway. We model the information propagation process as a renewal reward process and investigate in detail the Information Propagation Speed (IPS) of the proposed scheme. The corresponding closed-form IPS is derived, which shows that the IPS increases cubically with the vehicle density but will ultimately converge to a constant upper bound. Moreover, increased mobility also facilitates the information spreading by offering more communication opportunities. However, the limited network density essentially determines the bottleneck in information spreading. Extensive simulations are carried out to verify our analysis. We also show that the proposed scheme exhibits a significant IPS gain over its conventional counterpart.
Year
DOI
Venue
2015
10.1109/GLOCOM.2015.7417859
IEEE Global Communications Conference
Field
DocType
ISSN
Bottleneck,Markov process,Computer science,Upper and lower bounds,SAFER,Computer network,MIMO,Real-time computing,Vehicular communication systems,Information Dissemination,Vehicular ad hoc network
Conference
2334-0983
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Hui Wu151.12
Z. Zhang22308198.54
Huazi Zhang328924.91