40 research outputs found
Security Analysis of Vehicular Ad Hoc Networks (VANET)
Vehicular Ad Hoc Networks (VANET) has mostly gained the attention of today's
research efforts, while current solutions to achieve secure VANET, to protect
the network from adversary and attacks still not enough, trying to reach a
satisfactory level, for the driver and manufacturer to achieve safety of life
and infotainment. The need for a robust VANET networks is strongly dependent on
their security and privacy features, which will be discussed in this paper. In
this paper a various types of security problems and challenges of VANET been
analyzed and discussed; we also discuss a set of solutions presented to solve
these challenges and problems.Comment: 6 pages; 2010 Second International Conference on Network
Applications, Protocols and Service
Wireless Sensor Network MAC Energy -- efficiency Protocols: A Survey
Energy Efficiency in wireless sensor networks is an important topic in which
the nodes rely on battery power, and efficient energy usage is a key issue for
sensitive applications that require long working times. This stimulates many
scientists at all levels of communication protocols Medium Access Control (MAC)
who control the use of the wireless transmitter and receiver unit to create new
protocols. Many protocols were suggested that primarily take energy efficiency
as the primary objective of sustaining the function of the network for as long
as possible into account with different objectives for wireless sensor
networks. This paper will look at some of these energy efficiency protocols.Comment: 5 pages. 2020 21st International Arab Conference on Information
Technology (ACIT
An Improved CF-MAC Protocol for VANET
Vehicular Ad hoc Network (VANET) is one of the emerging research areas in the mobile computing field which is considered as future technology and promising topic in computer science and computer networks. Which provides road safety, updated traffic information, and infotainment. VANET consists of a large number of vehicles moving in high speeds while broadcasting important information like safety and control information which must be sent with high priority. Crowded networks like VANET having many vehicles competing to reserve the channel to send critical information which may lead to high collision scenarios, and therefore, there must be a protocol to send this kind of information with high reliability, low data loss and with no collision. In this research a collision-free protocol will be proposed to manage the channel access among competing vehicles to eliminate the collisions which occur rapidly in VANET especially in dense situations, the proposed protocol hereinafter will be called (I-MAC) protocol expected to enhance the channel performance, achieve load balancing, fairness, and decrease message loss and enhance reliability, The evaluation criteria will examine the channel throughput, message delay, and message loss; the results show that the overall channel performance with regard to collision and packet loss ratio is improved