Reliable MAC Layer Multicast in IEEE 802.11 Wireless Networks
ICPP '02 Proceedings of the 2002 International Conference on Parallel Processing
Routing in a delay tolerant network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Vehicle-to-vehicle safety messaging in DSRC
Proceedings of the 1st ACM international workshop on Vehicular ad hoc networks
A measurement study of vehicular internet access using in situ Wi-Fi networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Cabernet: vehicular content delivery using WiFi
Proceedings of the 14th ACM international conference on Mobile computing and networking
TBD: Trajectory-Based Data Forwarding for Light-Traffic Vehicular Networks
ICDCS '09 Proceedings of the 2009 29th IEEE International Conference on Distributed Computing Systems
Neighbor discovery in wireless networks and the coupon collector's problem
Proceedings of the 15th annual international conference on Mobile computing and networking
Neighbor discovery in mobile ad hoc networks using an abstract MAC layer
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Tree-Based Adaptive Broadcasting of Bandwidth Allocation for Vehicle Ad Hoc Networks
HPCC '10 Proceedings of the 2010 IEEE 12th International Conference on High Performance Computing and Communications
CSMA/CA performance under high traffic conditions: throughput and delay analysis
Computer Communications
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Efficient neighbor sensing in vehicular wireless networks is crucial to a number of applications such as driving safety and data delivery. For neighbor sensing, a vehicle has to send probe messages. The characteristics of vehicular networks raise several great challenges for real-time neighbor sensing. First, simultaneous wireless transmissions lead to packet collision. The aggressiveness of probe message transmission has a great impact on sensing latency, and it is difficult to determine the optimal aggressive degree of probe message transmission. Second, the number of neighbors of a vehicle in an urban environment may change over time and a static control method for probe message transmission results in poor performance. We design a protocol ENS for efficient neighbor sensing, in which each vehicle performs a randomized broadcast of probe messages in fix-length frames. To approach optimal neighbor sensing, ENS adopts an adaptive probe message transmission strategy. Based on an analytical framework, we theoretically determine the optimal configurations for number of probe messages and frame length. We have conducted trace driven simulation experiments, and performance results demonstrate that ENS outperforms two other alternative algorithms. In addition, more than 90% of association latencies are less than 600ms, and more than 90% of disassociation latencies are less than 200ms under a typical urban setting.