An Enhanced Cluster Feedback System for the Reduction of Jitter

Abstract

The principles of Mobile Ad-hoc Network (MANETs) are used for the designing of Vehicular Ad-hoc Networks (VANET) in the vehicular domain for deploying applications such as driver safety, traffic efficacy, congestion avoidance, and road safety. The concept of clustering has also been widely used in VANETs where vehicles randomly join and leave the network. The idea here is to divide the network into smaller groups or clusters and apply a selection mechanism to select a Cluster Head (CH) to represent each cluster. This mechanism reduces the communication load between the Road Side Units (RSU) and other VANET elements because instead of communicating using each, only a single node, i.e., the CH, communicates with the RSU to complete the transmission process. Therefore, the appropriate selection of the CH is the most essential step in the whole process. In the presented paper, a Feedback Oriented CH Selection (FOCS) algorithm has been proposed for the selection of appropriate CH based on criteria of minimum delay or jitter. The proposed algorithm is divided into two blocks in which the Cluster Block (CB) is responsible for the appropriate selection of the CHs, and the Feedback Block (FB) is responsible for the assignment of trust points based on the service orientation. The feedback scenario uses AODV as a routing protocol and the network performance of FOCS is evaluated based on the Quality-of-Service (QoS) parameters namely, Throughput, Packet Delivery Ratio (PDR), and Jitter. To test the scalability and robustness of the proposed algorithm, QoS parameters are calculated under deployed areas varying from 1000m² to 2000m² and node variation from 50 to 100 under different event scenarios.