02755nas a2200181 4500008004100000245009700041210006900138260001300207300000900220490000600229520207400235100002102309700002202330700002302352700002202375700001702397856015902414 2017 eng d00aVideo transmission in mobile ad hoc networks using multiple interfaces and multiple channels0 aVideo transmission in mobile ad hoc networks using multiple inte cMay 2017 a1-280 v83 a

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.

1 aBouras, Christos1 aGkamas, Apostolos1 aKapoulas, Vaggelis1 aPolitaki, Dimitra1 aTsanai, Enea uhttp://telematics.upatras.gr/telematics/publications/video-transmission-mobile-ad-hoc-networks-using-multiple-interfaces-and-multiple-channels?language=el01578nas a2200157 4500008004100000245010400041210006900145260002100214520092300235100002101158700002201179700002301201700002201224700001701246856015701263 2013 eng d00aEnhancing video transmission in MANETs utilizing multiple interfaces and multiple channels per node0 aEnhancing video transmission in MANETs utilizing multiple interf cOctober 16 - 18 3 a

Mobile Ad hoc NETworks (MANETs) are becoming more essential to wireless communications due to growing popularity of mobile devices. MANETs are also essential in Emergency Response situation where network information flow between deployed units is vital. In such cases voice and video transmission is essential to form a global view of the situation and decide on action. However, MANETs do not seem to effectively support multimedia applications and especially video transmission. In this work we propose a simple and efficient channel selection mechanism for enhancing Video Transmission in MANETS that have nodes with multiple interfaces, and can utilize multiple channels at the same time. The mechanism is implemented and tested in the ns-2 network simulator. Simulation results indicate that the mechanism improves the networks capacity for video transmission and reduces the video streams? packet delay.

1 aBouras, Christos1 aGkamas, Apostolos1 aKapoulas, Vaggelis1 aPolitaki, Dimitra1 aTsanai, Enea uhttp://telematics.upatras.gr/telematics/publications/enhancing-video-transmission-manets-utilizing-multiple-interfaces-and-multiple-channels?language=el01427nas a2200157 4500008004100000245013100041210006900172260002100241520074500262100002101007700002201028700002301050700002201073700001701095856015701112 2013 eng d00aEvaluation of Routing Protocols for Video Transmission over MANETs that use Multiple Interfaces and Multiple Channels per node0 aEvaluation of Routing Protocols for Video Transmission over MANE cDecember 11 - 133 a

Mobile Ad hoc NETworks (MANETs) are becoming more essential to wireless communications due to growing popularity of mobile devices. Many researchers have committed effort to enhance the Multimedia (video) transmission over MANETs. Various algorithms and mechanisms concerning the optimization of multimedia transmission have been presented. In this work we evaluate the effect of using multiple interfaces and multiple channels per node in the performance of already existing MANET routing protocols during video transmission. The evaluation shows that all routing protocols benefit from using multiple interfaces and multiple channels per node, and the video transmission over MANETs is improved.

1 aBouras, Christos1 aGkamas, Apostolos1 aKapoulas, Vaggelis1 aPolitaki, Dimitra1 aTsanai, Enea uhttp://telematics.upatras.gr/telematics/publications/evaluation-routing-protocols-video-transmission-over-manets-use-multiple-interfaces-and?language=el01946nas a2200181 4500008004100000245007700041210006900118260001700187300001000204520129100214100002101505700002001526700002201546700002301568700002201591700001701613856013401630 2013 eng d00aEvaluation of video transmission in emergency response ad - hoc networks0 aEvaluation of video transmission in emergency response ad hoc ne cJuly 29 - 31 a27-353 a

Mobile Ad hoc NETworks (MANETs) are becoming more essential to wireless communications due to growing popularity of mobile devices. MANETs are also essential in Emergency Response situation where network information flow between deployed units is vital. In such cases voice and video transmission is essential to form a global view of the situation and decide on action. However, MANETs do not seem to effectively support multimedia applications and especially video transmission. In this work we evaluate the use of multiple interfaces and multiple channels for Video Transmission in Emergency Response Ad hoc Networks. We also evaluate the video transmission with rate adaptation. Aim of this paper is to tune multiinterfaces and multi-channels video transmission mechanisms in order to support better emerging situations and offer a solution to have acceptable transmission of the necessary video streams so that the control can get a complete overall picture of the situation and decide on the action to be taken. The simulation evaluation performed shows that multi-interfaces and multi-channels video transmission offers many advantages in Video Transmission in Emergency Response Ad hoc Networks.

1 aBouras, Christos1 aKioumourtzis, G1 aGkamas, Apostolos1 aKapoulas, Vaggelis1 aPolitaki, Dimitra1 aTsanai, Enea uhttp://telematics.upatras.gr/telematics/publications/evaluation-video-transmission-emergency-response-ad-hoc-networks?language=el