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IPv6 support is needed in vehicular ad hoc network (VANET) with geographical routing. Basic IPv6 protocols such as address auto-configuration assume multicast capable link. However, in VANET, link becomes fuzzy and it is difficult to support link-scope multicast. Artificial emulation of multicast capable link like Ethernet is possible but may cause low efficiency and high cost. A new way to efficiently run IPv6 over VANET is needed and this paper proposes such a scheme. Our proposal takes C2C-CC scenario as a reference system and exploits C2C-CC inherent features to perform IPv6 operations without linkscope multicast.

Mobile Ad hoc Network (MANET) routing protocols and Network Mobility (NEMO) Basic Support are considered key technologies for vehicular networks. MANEMO, that is, the combination of MANET (for infrastructureless communications) and NEMO (for infrastructure-based communications) offers a number of benefits, such as route optimization or multihoming. With the aim of assessing the benefits of this synergy, this paper presents a policy-based solution to distribute traffic among multiple paths to improve the overall performance of a vehicular network. An integral vehicular communication testbed has been developed to carry out field trials. First, the performance of the Optimized Link State Routing protocol (OLSR) is evaluated in a vehicular network with up to four vehicles. To analyze the impact of the vehicles' position and movement on network performances, an integrated evaluation environment called AnaVANET has been developed. Performance results have been geolocated using GPS information. Second, by switching from NEMO to MANET, routes between vehicles are optimized, and the final performance is improved in terms of latency and bandwidth. Our experimental results show that the network operation is further improved with simultaneous usage of NEMO and MANET.

such a network is not planed. This is particularly the case when the nodes are mobile. In order to route the Many solutions have been developed for routing mes-messages in such a network, any node can retransmit sages in ad hoc networks. However, few of them are the messages to their destinations. efficient when the network is highly dynamic. Indeed, Many works have been done to design ad hoc routwhen the dynamicity is high, building a routing ta-ing algorithms, especially to deal with the node's ble, discovering and maintaining a route or localizing mobility: updating some routing tables (pro-active a node is a great challenge. This topic is currently algorithms), discovering some routes (reactive algoattracting attention with vehicular ad hoc networks rithms), using geographical informations (geocast al-(VANET), a special case of highly dynamic networks. gorithms), detecting some stable structures (clus-VANET may allow to enhance road safety, and to de-ters), using the node's movements to transport the velop new driver or passengers oriented services. messagesIn this paper we present a novel approach for messges. m routing in highly dynamic networks, relying on Besides the node's mobility, the algorithms have to codton-ae comuiato. Intado tras take into account the node's dynamic: a node may pordition sbad ses (or psiction. anmesa is sent appear or disappear in a neighborhood due to some writ som resodiios udor retrasmisseio oe-t power failures, obstacles, etc. An ad hoc network with some conditions used for retransmission or re-. h.gl dya...istplgyi otnuul n ception. Thanks to the dynamic evaluation of the conditions we show that this solution can efficiently very frequently changing (due to node's mobility and node's dynamic) in such a way that nodes localization support the high dynamic of vehicular networks. Weisnvrtalethroclyrgobl.Ruig also analyze the performances of OLSR, Fast OLSR, AODV, and GAMER on several traffic road scenar-messages in such a network is a great challenge.ios.This subject attracts many interest in particular for developing inter-vehicles networks. Among the applications, we can quote automatic driving, road

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Vehicular networks attract a lot of attention in the research world. Novel vehicular applications need a suitable communication channel in order to extend in-vehicle capabilities and, be aware about surrounding events. However, these networks present some proprieties, such as high mobility or specific topologies. These properties affect the performances of applications and more effort should be directed to identify the final necessities of the network. Few works deal with application requirements which should be considered when vehicular services are designed. In this chapter this gap is filled, proposing an analysis of application requirements which considers available technologies for physical/MAC and network layers. This study contains key factors which must be taken into account not only at the designing stage of the vehicular network, but also when applications are evaluated.