Efficient Resource Scheduling Algorithm for SDN Enabled Vehicular Adhoc Network

Abstract

In general, safety application requires time-based message delivery among the vehicles; further, 802.11p is standard medium access control (MAC)for vehicular communication. Moreover, 802.11P uses Carrier sense- MA (Multiple Access) with collision avoidance, aka CSMA/CA, in place of MAC; further using CSMA/CA aid in inducing unbounded resource allocation delay. Thus, it increases the probability of collision in vehicular Adhoc network (VANET). Further, for minimizing collision in VANET, efficient MAC design for resource allocation is needed. Recently, the number of TDMA (Time Division Multiple Access) based resource scheduling technique has been presented.

Nonetheless, these models fail as they do not utilize bandwidth inefficient way. Some of the existing methods adopted a cognitive radio mechanism to allocate resources for increasing throughput under a multichannel environment. However, the existing resource allocation model induces highercollision and resource allocation is said to have an NP-hard problem. Further, this research work focuses on addressing these issues. This work presents efficient resource scheduling (ERS) algorithm under shared (i.e., overlapping) multichannel software defined vehicular Adhoc network (SDVN). The ERS model maximizes the throughput and, with a minimal collision, is proven through experiments. Simulation is carried out for evaluating the performance of ERS over the existing resource scheduling algorithm considering throughput and collision under a highly congested vehicular Adhoc network. Further, the benefit of using SDN in VANET is realized through experiment analysis considering dynamic radio propagation and mobility environment.

Keywords: DSRC; IEEE 802.11p, MAC; Multi-channel, Software defined network; VANET.