Internet of Vehicle (IoV) is a sub class of vehicular ad hoc networks with more advanced cloud and Internet-enabled services. These networks offer various types of safety and infotainment services and provide comfortability and safety to passengers as well as to the drivers. Due to the high mobility of nodes, the nodes are out from its communication range and the information becomes outdated and causes link disconnections and packet dropping. Most feasible routing protocols are needed to provide in-time data communication, handle high mobility of nodes, dynamic topologies and unpredictable environments of these networks. In this paper, we proposed SACBR (Self-Assessment Cluster-based Routing) protocol in which the Cluster Heads (CHs) can communicate with other CHs. Every vehicle node initiates a self-assessment approach based on more appropriate routing metrics and elects the CH for every cluster and then collects the data from member nodes and further forward the data to other CHs. The CH is responsible to manage its own and member nodes' data forwarding process. The proposed protocol provides more stability and less overhead compared to the aggregation method where every node exchanges its data with a one-hop neighbor. Proposed protocol suites sparse and dense traffic scenarios where most of the time vehicle nodes are moving in platoons or snaking structures. The experimental results show the better performance of SACBR compared to state-of-the-art protocols. INDEX TERMS Cluster head, Internet of Vehicles, forwarding, routing, protocol.

No abstract

In mobile ad-hoc networks routes have to be refreshed frequently due to the mobility of nodes acting as routers to forward data. If a node in a mobile ad hoc network is aware ofthe mobility ofneighboring nodes, a highly mobile node can be avoided to become apart ofroutes, this will reduce re-route discoveries. A node becomes aware of its neighbors through inquiries and reply to inquiries. These inquires can be quasiperiodic or demand based. This paper focuses on the quasi-periodic inquiries. The HELLO packets of the AODV protocol are modified to achieve it. On receiving a HELLO packet with GPS coordinates of the originator, a node compares them with the previous coordinates and hence becomes aware about the mobility of the originator with reference to itself Mobility awareness in nodes improves throughput ofa mobile ad-hoc network