MONET Special Issue on Towards Future Ad Hoc Networks: Technologies and Applications (II)

Jun Zheng, Cheng Li, Peter Han Joo Chong, Weixiao Meng
2021 Journal on spesial topics in mobile networks and applications  
An ad hoc network is a wireless system in which network nodes are connected via wireless links and cooperate to selforganize into a network with no need for any infrastructure such as access points or base stations. Ad hoc networks cover a variety of paradigms such as mobile ad hoc networks (MANETs), wireless sensor networks (WSNs), vehicular ad hoc networks (VANETs), underwater networks, airborne networks, underground networks, personal area networks, and home networks. These types of networks
more » ... promise a wide range of applications in civilian, commercial, and military areas. However, the distributed and multi-hop nature of ad hoc networking as well as the highly dynamic topology of ad hoc networks due to node mobility have presented many formidable technical challenges, such as scalability, quality of service, reliability and security, and energy efficiency, which have stimulated a considerable amount of research activities in this broad area in recent years. This special issue includes six papers that report recent research advances in the area of ad hoc networks, among which four papers are selected from AdHocNets 2019 and two are selected from open call. In the first paper, "Communication by Credence: Trust Communication in Vehicular Ad Hoc Networks", Sun et al. proposed the concept of Trust Communication (TC) to address the low-cost and real-time security issue caused by high mobility in vehicular ad-hoc networks (VANETs). Following this concept, each vehicle gains a trust value depending on its performance of communication, and then other vehicles choose to communicate with the vehicle owning a high enough trust value. However, how to allocate the trust value and how to make a trust communication method to adapt the complex scenario of a VANET are crucial and unsolved problems. The authors presented an in-depth investigation on the Trust Communication issue in VANETs. The background of the Trust Problems is first introduced in VANETs. Then, the most basic trust models for VANETs and a classification of these models are surveyed and discussed. Given the limitations of these basic models, the authors further presented various improvement measures for each model and finally discussed the performances of the trust models under various application scenarios. In the second paper, "The Time-Free Comparison Model for Fault Diagnosis in Wireless Ad hoc Networks," Jarrah et al. described a new comparison-based model for fault diagnosis in wireless ad hoc networks. Specifically, they introduced a time-free self-diagnosis model which is adaptable to the topology's changes, imposes no known bounds on time delays, and requires limited network information. Further, they developed a fault diagnosis protocol that can correctly diagnose faulty nodes undergoing static and dynamic faults in mobile ad-hoc networks (MANETs). It is shown through both an analytical model and a simulation study that the proposed fault diagnosis protocol is efficient in terms of communication and time complexity in various scenarios. In the third paper,
doi:10.1007/s11036-021-01731-7 fatcat:pcoiao3k4ratll7ku5qkw3k7ia