Video transmission in mobile ad hoc networks using multiple interfaces and multiple channels

Abstract

Mobile Ad hoc NETworks (MANETs) are an important part of wireless communications and the increasing use of mobile devices is confirming that. MANETs can be of great value in Emergency Response situations where communication between mobile deployed units is critical and wired or wireless infrastructures may not be present or functional. In emergency scenarios, multimedia communication is very important for decision making and situation assessment. This requires up-to-date (on-line) information feed on the situation, including voice and video from the affected zone. However, MANETs do not seem to efficiently support multimedia applications, and this is quite evident in video transmission. One way to remedy this is to use more (wireless) interfaces per mobile node and consequently more communication channels. In this work, we perform an analytical study on the use of multiple interfaces and multiple channels (MIMC) in video transmission with respect to the requirements of Emergency Response Ad hoc Networks. More specifically, we examine and present the impact of using MIMC on MANETs during video transmission applications, we evaluate the performance of three basic routing protocols in MANETs, and we propose a channel selection mechanism in MANET nodes with MIMC for enhanced video transmission. In addition, we evaluate video transmission streams with rate adaptation and present comparative results. The proposed mechanism is evaluated using the ns-2 network simulator and the simulations are performed for a variety of topologies. Simulation results show that the different routing protocols respond differently when MIMC is introduced. The Ad hoc On-Demand Multipath Distance Vector and (especially) the Ad hoc On-Demand Distance Vector routing protocols benefit significantly, while the Destination Sequenced Distance Vector shows fewer improvements. The proposed mechanism is shown to be beneficial for transmitting video streams and enhances the network's ability to accommodate more streams and reduce packet delay.

A comprehensive survey onQoSfor video transmission in heterogeneous mobile ad hoc network

“…But, H-MANET requires all the network layers to participate in QoS provisioning. 96,97 Wireless Channel characteristics are quickly changed with the help of the physical layer in H-MANET. MAC must reduce packet collision and safeguard reasonable network entrees and consistent information transmission in a disseminated channel allocation.…”

“…Routing and transport layers in a wired network achieve the standard QoS provisioning. But, H‐MANET requires all the network layers to participate in QoS provisioning 96,97 . Wireless Channel characteristics are quickly changed with the help of the physical layer in H‐MANET.…”

Energy‐efficient remote mobile device management in infrastructure‐less environment for emergency assessment

“…In Lorincz et al, 40 another direction of work related to installing a sensor network for emergency response is proposed, which can be interfaced with deployed network for transferring the information to central facility. In Bouras et al, 41 ways of carrying out live streaming of the affected region using the emergency network (for providing communication) are suggested.…”

U2RV: UAV‐assisted reactive routing protocol for VANETs

“…Since the appearance of wireless interfaces, wired connections in certain networks are surpassed in order to provide flexibility of movements to the nodes while adopting this kind of interfaces . We consider that a network is mobile when the movements of nodes allow to establish new wireless connections and disconnections (ie, appearance and disappearance of links).…”