Analyzing the efficiency of context-based grouping on collaboration in VANETs with large-scale simulation

Abstract

Vehicle-to-vehicle and vehicle-to-infrastructure communication systems enable vehicles to share information captured by their local sensors with other interested vehicles. To ensure that this information is delivered at the right time and location, context-aware routing is vital for intelligent inter-vehicular communication. Traditional network addressing and routing schemes do not scale well for large vehicular networks. The conventional network multicasting and broadcasting cause significant overhead due to a large amount of irrelevant and redundant transmissions. To address these challenges, we first take into account contextual properties such as location, direction, and information interest to reduce the network traffic overhead. Second, to improve the relevancy of the received information we leverage the mobility patterns of vehicles and the road layouts to further optimize the peer-to-peer routing of the information. Third, to ensure our approach is scalable, we propose a context-based grouping mechanism in which relevant information is shared in an intelligent way within and between the groups. We evaluate our approach based on groups with common spatio-temporal characteristics. Our simulation experiments show that our context-based routing scheme and grouping mechanism significantly reduces the propagation of irrelevant and redundant information.

A Destination Based Routing Protocol for Context Based Clusters in VANET

“…Otherwise, the message will be forwarded to the next cluster head without propagating the message inside the cluster. This will reduce the irrelevant network transmissions within the cluster [2].…”

“…If the vehicles inside the cluster are interested then CH will forward the message to the cluster members. Otherwise, the message will be forwarded to the next CH without propagating the message inside the cluster [2] [3]. This will reduce the irrelevant information propagation in the network.…”

The role of congestion in probabilistic broadcasting for ubiquitous wireless multi-hop networks through mediation analysis

“…Thus, the MAC layer is responsible for enabling nodes to access the wireless medium in a coordinated mode. IEEE 802.11 DCF is de facto MAC standard protocol in MANETs and 802.11p is the one for VANETs [23]. In both cases, the performance of the MAC protocols is degraded in congested scenarios because of common issues in wireless networks such as the hidden terminal problem, the exposed terminal problem and the broadcast storm problem [8], which are even more aggravated in congested scenarios.…”

Efficient bandwidth utilization during message dissemination among authentic vehicles in VANET

“…But the overhead of the cognitive agent-based model is not evaluated in [9]. In [10] the communication in VANET is optimized by using contextbased grouping mechanism based on common spatialtemporal characteristics and shared interests. Each group of vehicles has a responsibility to specify which context information can be distributed inside the group and between the groups.…”