Improving the Packet Delivery Reliability and Privacy Protection in Monitoring Wireless Networks

Author(s):  
Lilian C. Mutalemwa ◽  
Seokjoo Shin
Author(s):  
Joarder Kamruzzaman

Security and privacy protection are very strong requirements for the widespread deployment of wireless technologies for commercial applications. The primary aim of this chapter is to present an overview of the security and privacy issues by highlighting the need to secure access to wireless networks and the loss that might accrue from the breach of a network. The vulnerabilities of the IEEE 802.11 and Bluetooth networks are discussed, and a paradigm for secure wireless network is presented. The legal framework guiding the privacy issues in wireless communications is also presented.


Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2707
Author(s):  
Marc Guerrero ◽  
Cristina Cano ◽  
Xavier Vilajosana ◽  
Pascal Thubert

Estimating channel conditions to predict packet delivery can be exploited as a powerful tool to ensure wireless networks dependability. In this article we explore the practical application of this idea from the end-device perspective, using the LoRaWAN protocol stack. We aim to understand if packet delivery can be estimated considering different levels of feedback at the end-device. For that, an extensive data collection campaign is carried out. Through an analysis of the obtained traces, we establish correlations between connectivity metrics at the end node and the fact that a packet is received at the gateway. The study is complemented considering different levels of feedback: (i) No feedback, (ii) enabling acknowledgements frames, and (iii) considering application/control plane data about the channel status at the gateway side. The results show that it is possible to estimate packet delivery in all the evaluated cases.


The Hybrid Wireless Networks (HWN) interconnects both mobile networks and wireless networks or combines a cellular and a multi-hopping wireless networks or inter and intra networks. These are networks in which any mobile node in a wireless network may have connectivity either directly or via a gateway node to an infrastructure based wireless network. The quick development of wireless networks has triggered enormous applications. They have been used in various fields such as commerce, emergency services, health care, education, entertainment, etc. In spite of more advantages in HWN, it has some challenges such as to increase data transmitting capacity, to strengthen the network connection, proper bandwidth allocation in Mobile Ad hoc Network (MANET), to maintain a connection during the handover, to reduce the connection failure in between two networks. Here, this research considered to improve the Quality of Service (QoS) by reducing the invalid reservation problem, race conditional problem and link failure. In this paper for guarantying reliable and continuous data transmission and also to ensure that cooperative routing is done faster response and effective packet transmission. Cooperative communications are the most recent fields of research: they combine wireless channels’ link quality and broadcasting nature. Ad-hoc mobile networks are successful in communication if routing and transmission of participating nodes are working. A flow is divided into batches of data packets. On departing from source node, every packet of alike batch encloses similar forwarder list. Proactive Source Routing (PSR) protocol offers every node along nodes in networks, the identity of path nodes are enclosed by forwarder list commencing the location of source node. On progressive packets forwarding nodes modifies the forwarder list on any modification notified in network topology. In addition, a few nodes in extra which is not in list of transmitting node may also be transmitted if it is helpful, called small-scale retransmission. Cooperative and optimized QoS distributed multipath routing protocol (COQDMRP) combines the link-quality and broadcasting nature of wireless channels. Thus communication in mobile ad-hoc networks functions properly only if the participating nodes cooperate in routing and forwarding. Also, here the routing utilizes the neighbouring nodes which are basically referred as “Co-operative nodes” that can help transmitting the data from the source and destination. Since many nodes take part in the routing process, it helps to improve the overall throughput and packet delivery ratio. This proposed solution could be deployed in cases where a portion of nodes are in remote areas, packets with varied priority, highly scaled distributed HWN and network with considerable amount of nodes with less battery power. It is designed to achieve high throughput and packet delivery ratio, and low energy consumption. end - to - end delay and packet loss ratio.


Author(s):  
Sachin Dev Kanawat ◽  
Pankaj Singh Parihar

Communications in wireless networks has been facilitating numerous emerging applications that require packet delivery from one or more senders to multiple receivers. Communications are susceptible to various kinds of attacks due to insecure wireless channels. Communications in wireless networks remains a challenging and critical issue. This paper presents recent advances in security requirements and services in communications in wireless networks. Wireless networks are being used in many commercial and military applications to collect event driven and real time data. Deployment nature of networks makes them vulnerable to security threats. Due to the resource limitations traditional security measures are not more enough to keep safe the nodes. Research in network security domains has produced several security solutions. In this paper we have observed security mechanisms. We have studied these security mechanisms with respect to packet overheads and compared the packet transmission time, average latency and energy consumption. The comparison shows that the packet overheads are lesser as compared to other schemes. It have been observed that packet delivery ratio decreases when we increase number of nodes while energy and latency increases.


2021 ◽  
Vol 110 ◽  
pp. 102303
Author(s):  
Bo Ning ◽  
Yunhao Sun ◽  
Xiaoyu Tao ◽  
Guanyu Li

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