An Approach to Improve the Quality of Service in DTN and Non-DTN based VANET

Abstract

Nowadays, with attention to soar in the number of network users, it is necessary to find new approaches to revolutionize network operation. Vehicular ad-hoc networks are bound to play a pivotal role in communication, therefore raising the traffic in the network, using only WiFi is unlikely to address this problem. Vehicles could use SDN and other networks such as 4G as well as 5G to distribute traffic to different networks. Moreover, many approaches for handling different data types are inappropriate due to the lack of attention to the data separation idea. In this paper, we proposed a control scheme called Improve Quality of Service in DTN and Non-DTN (IQDN) which works based on vehicle communication infrastructure using SDN idea. IQDN separates data to Delay-Tolerant Data (DTD), and Delay-Intolerant Data (DID) where the former buffers in a vehicle till the vehicle enters an RSU range and sends DTD using IEEE 802.11p. DID packets are sent by cellular networks and LTE. To transmit DTD via IEEE 802.11p, the network capacity is evaluated by SDN. If that network has room to transmit the data, SDN sends a control message to inform the vehicle. Simulations show that sending data over RSU and LTE increases the throughput and decreases the congestion, so the quality of service improves.

All about Delay-Tolerant Networking (DTN) Contributions to Future Internet

“…A significant category where DTN protocols find extended applications is VANETs [131]. VANETs enable communication between vehicles and roadside infrastructure to enhance road safety, traffic efficiency, and provide infotainment services.…”

Joint downlink user association and interference avoidance with a load balancing approach in backhaul-constrained HetNets

“…A scenario with (1,6,12) BSs, each with 20 subbands, is developed to investigate the effects of an increasing number of network users. The size of the user selection list is 30.…”

“…In this scenario, the effect of increasing the number of subbands and therefore network resources on the behavior of the proposed algorithm, max-SINR, and CRE methods is explored (see Fig 12). In this scenario, 200 users are placed in a network with (1,6,12) BSs. The size of the user selection list is 30.…”

“…Due to the growing demands of cellular network users, there is a need to increase the capacity of these networks [ 1 ]. Developing a heterogeneous cellular network by increasing the spectral efficiency per unit area is a definite solution to increase the capacity of current and future generations of cellular networks [ 2 , 3 ].…”

“…In this section, the effect of the desirability function in the CNR algorithm on the result of the DB-AC algorithm is investigated. The desirability function determines how desirable a connection is from the BS's viewpoint, and it is used when BS is deciding whether to keep or remove a connection among interfering connections.A scenario with 200 users in HetNets with(1,3,6) BSs is considered. The number of network subbands is variable, and the network utility is obtained once the algorithm converges.The corresponding diagram is shown in Fig 5.…”