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VEHICULA AD-HOC NETWORKVehicular Ad-Hoc Network: Current Challenges, and FuturePerspective1
VEHICULA AD-HOC NETWORKChapter 2: Vehicle to Vehicle2.1 System Model:Vehicle to vehicle (“V2V”) represents the automobile technology which has been designed forallowing the automobiles in talking / communicating with one other   . This V2Vcommunications essentially forms the wireless form of ad hoc networks across the road. Thesenetworks in addition, as described earlier, can stated as the VANET   . This system shallemploy the region equivalent to 5.9 GHz bands set aside from Congress of United States,representing unlicensed form of frequency that is in addition employed for WiFi   . TheV2V standards used in United States and widely referred as Wireless Access for the VehicularEnvironments(“WAVE "), essentially builds over the existing lower level standard of IEEE 802.11pstarting much earlier from the year 2004   . The rapid form of development with respect to technologies concerning wireless communication,sensors, as well as location, V2V communications represent the decentralized or else semi-centralized forms of architecture that are designed and developed with support from variedstakeholders like automobile manufacturers, telecom companies, research / academiccommunity, etc. These forms of architecture shall rely over the autonomous as well asdistributed form of system as well as are made up by way of vehicles in themselves lacking any ofthe support with respect to fixed form of infrastructure concerning the data routing. The most integral element pertaining to the intelligent / smart form of transport systems, V2Vessentially combines the following set of approaches as well as technologies –Sensing as well as closet form of environment perceptions: By way of employing variedset of sensors pertaining to pollution levels, current state of vehicle, overall state of thetransport medium, that is, road, weather related conditions, etc., as well as cameras,driver in charge possess certain levels of concerned information as well as effectivevisibility within the vehicle, thereby enabling the driver in reacting on an appropriatemanner towards changes with respect to the immediate and the relevant environment  .2
VEHICULA AD-HOC NETWORKProcessing: By way of the large levels of processing capacities available on board, thepresent day vehicles are evidently intelligent as well as possess the suitable set ofcapabilities to process the information collected for the purposes which shall aid thedriver in charge for making the suitable decisions specifically with respect to systems ofdriver assistance   .Storage: large capacities of storage space shall be required with respect to the vehicularcommunications as well as affiliated intelligence for the purposes of storing varied classesas well as varied types of related information. The data structures shall be suitablyupdated by way of decisions as well as events in terms of concerned communicationsystem. It has to be noted herein that with respect to network for vehicles, storage spaceas well as energy shall be available to the sufficient extent   .Routing & communication: In terms of exchange of information as well as diffusion withrespect to vehicular network in itself or else amongst the other networks like for examplecellular or else IP is key for V2V   . The same paves way for increasing the overallprecaution perimeter by the aid of the extended perceptions concerning the relevantenvironment as well as consequently giving much more correct predictions with respectto the driving problems   .These varied set of technologies, tools, processes, etc. are all present across all of theenvironments wherein the V2V technology could be suitably applied. Irrespective of the same,dependence with respect to application sectors, concerned environment as well as thecharacteristics of environment could vary in terms of being at tunnels, urban spaces, semi-urbanspaces, rural and free spaces   . The properties concerning wireless communication, radiorange as well as capacity could in addition be suitably contrasted. With respect to theperspective of architecture the inter vehicle form of communication systems could either bepurely ad hoc form of vehicle to vehicle communication, or else the hybrid form that makes useof the gateways towards the other set of services as well as networks   .3
VEHICULA AD-HOC NETWORK2.2 security and privacy:The Inter Controller Area Networks (“ICAN”) refers to the network protocol which has beendesigned to the primary extent for environments pertaining to vehicle networking. The CANcontroller shall act in being mediator for alleviating the affiliated node processor in over-workingby itself from higher speeds of the message transfers . In case of CAN, disputes amongst themessages shall be determined in the basis of bit by bit with respect to non-destructive for ofarbitration and the same lead to highest form of priority messages gaining accessibility towardsthe bus. A CAN protocol effectively supports 2,032 varied messages each up till 8 bytes size fordata. Unlike various protocols for serial communication CAN form of message data comprisenone of the information affiliated with respect to destination addresses . This messagecomprises one identifier that indicates specific information type which is actually containedwithin .The said feature paves way for a convenient form of deletion / addition of relevant intelligentnodes within the automotive systems. In addition, each of the nodes shall decide concerningreading or else ignoring the specific CAN message. Any of the messages may be broadcastedacross multiple set of nodes by way of utilizing the specific CAN protocol . Most of theproducts have been designed for stopping good people in unintentionally doing anything bad.The same has resulted in situations within which the security of a product shall at times beafterthought leading to frequent re-designs. The undertaking of security decisions at the earliestpossible time within the relevant design phase shall make it much easier for avoiding costlier re-designs which shall be difficult in both management as well as implementation . Whilst the requirement for an advanced form of telematics systems continue in driving theinterests of consumers, manufacturers of automobiles are pressured equally in providingworkable form of systems which can effectively guarantee prevention of unauthorized form ofentries by hackers as well as various cryptology experts   . The various forms of challenges were never area of concern during the earlier times on accountof gaps with respect to technology as well as electrical knowledge, yet on account of suddenadvancements within IT, as well as the abilities for developing ad-hoc form of interfaces by way4
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