Vehicular Ad hoc Networks (VANETs) that are considered as a subset of Mobile Ad hoc Networks (MANETs) can be applied in the field of transportation especially in Intelligent Transportation Systems (ITS). The routing process in these networks is a challenging task due to rapid topology changes, high vehicle mobility and frequent disconnection of links. Therefore, developing an efficient routing protocol that satisfies restriction of delay and minimum overhead is faced with many difficulties and limitations. Also, the detection of malicious vehicles is a significant task in VANETs. To address these issues, using Unmanned Aerial Vehicles (UAVs) can be helpful to cope with these limitations. In this paper, operation of UAVs in ad hoc mode and their cooperation with vehicles in VANETs are studied to help in the process of routing and detection of malicious vehicles. A routing protocol named VRU is proposed that includes two distinct ways of routing of data: (1) delivering packets of data between vehicles with the help of UAVs using a protocol named VRU_vu, and (2) routing packet of data between UAVs using a protocol named VRU_u. The NS-2.35 simulator under Linux Ubuntu 12.04 is utilized in order to appraise the performance of VRU routing components in an urban scenario. Also, VanetMobiSim generator of mobility and MobiSim are used to produce the motions of vehicles and to produce the motions of UAVs, respectively. The performance analysis displays that VRU protocol can improve the packet delivery ratio by 16% and detection ratio by 7% compared to other reviewed routing protocol. Also, VRU protocol decreases end-to-end delay by an average of 13% and overhead by 40%.

This work proposes an innovative infrastructure of secure scenario which operates in a wireless-mobile 6G network for managing Big Data on Smart Buildings. Count on the rapid growth of telecommunication field new challenges arise. Furthermore, a new type of wireless network infrastructure, the sixth generation (6G), provides all the benefits of its past versions and also improves some issues which its predecessors had. In addition, relative technologies to the telecommunications filed, such as IoT, Cloud Computing and Edge Computing, can operate through a 6G wireless network. Take into account all these, we propose a scenario that try to combine the functions of the Internet of Things with Cloud Computing, Edge Computing and Big Data in order to achieve a Smart and Secure environment. The major purpose of this work is to create a novel and secure Cache Decision System in a wireless network that operates over a Smart Building, which will offer the users safer and efficient environment for browsing the internet, sharing and managing large-scale data in the fog. This CDS consisted of two types of servers, one Cloud Server and one Edge Server. In order to come up with our proposal, we study related cache scenarios systems which are listed, presented, and compared in this work.