000			03729nam a22002777a 4500
003			KOHA_MİRAKIL
005			20211203160349.0
008			211203d2021 cy ||||| m||| 00| 0 eng d
040			_aCY-NiCIU _beng _cCY-NiCIU _erda
041			_aeng
090			_aD 274 _bI74 2021
100	1		_aIbrahim, Banar Fareed
245	1	0	_aCONTROLLED RE-BROADCASTING MECHANISM (CRM) FOR DATA DISSEMINATION OVER VANET / _cBanar Fareed Ibrahim; Supervisor: Assoc. Prof. Dr. Mehmet Toycan
264			_c2021
300			_a109 sheets; _c31 cm. _eIncludes CD
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
502			_aThesis (PHD.) - Cyprus International University. Institute of Graduate Studies and Research Computer Engineering Department
504			_aIncludes bibliography (sheets 102-109)
520			_aABSTRACT The design and implementation of development methods are addressed using a framework of information and communication technology that offers guidance to a smart city in redesigning, implementing, and promoting different development processes. One of the technologies that allow the development of smart cities is the Intelligent Transportation System (ITS). One of the technologies that allow the development of smart cities is the Intelligent Transportation System (ITS). VANETs (Vehicular Ad-hoc NETworks) play an essential role in ITS. Vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), and vehicle-to-everything (V2X), broadcasting is a method used by vehicles and other components in the VANET to share information. While changing broadcasting techniques has its benefits, it also has its drawbacks. If several vehicles broadcast the same message, for example, the network will be flooded with messages, this is known as a broadcast storm, and it occurs when the network transmission is overloaded. As a result, the number of vehicles rebroadcasting signals must be reduced. In this research, this issue is addressed by proposing a new mechanism called as Delay Time aware Controlled Rebroadcasting (DTCR) mechanism. The proposed DTCR mechanism makes the vehicle generate Time To Live value while broadcasting the messages. The TTL value of the messages is generated by considering parameters like delay time, transmission time as maximum and busy channel ratio. The recipient vehicle of the messages checks the transmission vehicle's vicinity. If the receiver is far from the sender, it moves the messages to the buffer and waits for the delay timer to expire. During this waiting time, if any other message with the same ID is received, the vehicle marks the message as duplicate and discards the messages. If none received, the vehicle would rebroadcast the message by decreasing the TTL value. This process makes the vehicles apply a delay time before rebroadcasting messages which in turn makes the vehicle receive already rebroadcasted messages. Thus the vehicles which are receiving the copies of the messages will discard the message and do not rebroadcast the messages. The proposed DTCR mechanism is implemented and simulated in Omnet++, SUMO and VEINS simulation tools. Results of analysis and simulation show that the DTCR improves system performance in terms of performance, delivery ratios, and delay compared to conventional routing protocols. In general, the proposed technique showing an improvement of 10% than other methods in several metrics cumulatively.
650		0	_aBroadcasting _vDissertations, Academic
650		0	_aVehicular ad hoc networks (Computer networks) _vDissertations, Academic
700	1		_aToycan, Mehmet _esupervisor _91825
942			_2ddc _cTS
999			_c283420 _d283420