Paper Info
Title
Mac for Physical-Layer Network Coding in VANETs
Abstract
In this paper, the authors present VPNC-MAC, a PNC-based MAC protocol for efficient and reliable periodic beacon broadcasts in VANETs. In addition to PNC-based scheduled transmissions, VPNC-MAC makes use of CSMA/CA to ensure fairness and flexibility with transmissions from CSMA-based nodes. VPNC-MAC consists of two phases: In the setup phase, a quasi-optimal mechanism of selecting a relay node is proposed to take into account both the position, and the remaining time the relay needs for delivering its current beacon. In the packet exchange phase, they define two priority modes to deal with the cohabitation of both the CSMA-based and the VPNC-based nodes, and also with unpredictable events such as emergency broadcasts. Contrary to the high-priority mode, the VPNC-based nodes AIFS in the low-priority mode is set such that the medium access is granted prior to CSMA-based nodes. Simulations results show that the global PRR in high-priority mode outperforms existing MAC.
Year
DOI
Venue
2012
10.4018/jbdcn.2012100106
IJBDCN
Keywords
Field
DocType
pnc-based mac protocol,vpnc-based node,priority mode,physical-layer network coding,present vpnc-mac,high-priority mode,csma-based node,pnc-based scheduled transmission,vpnc-based nodes aifs,current beacon,low-priority mode,mac,reliability
Physical layer network coding,Computer science,Network packet,Computer network,Periodic broadcast,Periodic graph (geometry),Relay,Distributed computing
Journal
Volume
Issue
ISSN
8
4
1548-0631
Citations 
PageRank 
References 
4
0.51
10
Authors
2
Name
Order
Citations
PageRank
Eugène David Ngangue Ndih1102.72
Soumaya Cherkaoui218740.89