Interference Effects Redress over Power-Efficient Wireless-Friendly Mesh Networks for Ubiquitous Sensor Communications across Smart Cities

Santana, José Aurelio; Marrero, Domingo; Macías, Elsa M.; Mena, Vicente; Suárez, Alvaro

doi:10.3390/s17071678

Cited by 9 publications

(8 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to such a feature, WMNs are suitable for both providing ubiquitous connection to the internet and carrying data generated by multiple services, such as internet of things (IoT), smart grids, vehicle-to-vehicle (V2V), etc. [4][5][6], where mesh nodes need to be deployed without fixed power connections. In this case, most of the mesh nodes are supplied by the batteries, which have limited operation time and need to be replaced or recharged frequently.…”

Section: Introductionmentioning

confidence: 99%

Robust Beamforming Design for SWIPT-Based Multi-Radio Wireless Mesh Network with Cooperative Jamming

Zhao

Geng

et al. 2020

Information

View full text Add to dashboard Cite

Wireless mesh networks (WMNs) can provide flexible wireless connections in a smart city, internet of things (IoT), and device-to-device (D2D) communications. The performance of WMNs can be greatly enhanced by adopting a multi-radio technique, which enables a node to communicate with more nodes simultaneously. However, multi-radio WMNs face two main challenges, namely, energy consumption and physical layer secrecy. In this paper, both simultaneous wireless information and power transfer (SWIPT) and cooperative jamming technologies were adopted to overcome these two problems. We designed the SWIPT and cooperative jamming scheme, minimizing the total transmission power by properly selecting beamforming vectors of the WMN nodes and jammer to satisfy the individual signal-to-interference-plus-noise ratio (SINR) and energy harvesting (EH) constrains. Especially, we considered the channel estimate error caused by the imperfect channel state information. The SINR of eavesdropper (Eve) was suppressed to protect the secrecy of WMN nodes. Due to the fractional form, the problem was proved to be non-convex. We developed a tractable algorithm by transforming it into a convex one, utilizing semi-definite programming (SDP) relaxation and S-procedure methods. The simulation results validated the effectiveness of the proposed algorithm compared with the non-robust design.

show abstract

Section: Introductionmentioning

confidence: 99%

Robust Beamforming Design for SWIPT-Based Multi-Radio Wireless Mesh Network with Cooperative Jamming

Zhao

Geng

et al. 2020

Information

View full text Add to dashboard Cite

show abstract

“…Among those causes are the following: Coverage deficiencies in LTE (especially in emergent countries). Range coverage and radio channel interferences in WiFi [ 16 ], prolonged access to the channel (long periods of contention) of WiFi terminal. Bad planificafication of dense WiFi networks.…”

Section: Introductionmentioning

confidence: 99%

“…Range coverage and radio channel interferences in WiFi [ 16 ], prolonged access to the channel (long periods of contention) of WiFi terminal.…”

Section: Introductionmentioning

confidence: 99%

Low Cost Efficient Deliverying Video Surveillance Service to Moving Guard for Smart Home

Gualotuña

Macías

Suárez

et al. 2018

Sensors

Self Cite

View full text Add to dashboard Cite

Low-cost video surveillance systems are attractive for Smart Home applications (especially in emerging economies). Those systems use the flexibility of the Internet of Things to operate the video camera only when an intrusion is detected. We are the only ones that focus on the design of protocols based on intelligent agents to communicate the video of an intrusion in real time to the guards by wireless or mobile networks. The goal is to communicate, in real time, the video to the guards who can be moving towards the smart home. However, this communication suffers from sporadic disruptions that difficults the control and drastically reduces user satisfaction and operativity of the system. In a novel way, we have designed a generic software architecture based on design patterns that can be adapted to any hardware in a simple way. The implanted hardware is of very low economic cost; the software frameworks are free. In the experimental tests we have shown that it is possible to communicate to the moving guard, intrusion notifications (by e-mail and by instant messaging), and the first video frames in less than 20 s. In addition, we automatically recovered the frames of video lost in the disruptions in a transparent way to the user, we supported vertical handover processes and we could save energy of the smartphone's battery. However, the most important thing was that the high satisfaction of the people who have used the system.

show abstract

“…Nowadays, the trend is getting stronger and stronger that gathered data growth and deployed ubiquitous sensing application systems [1,2,3,4,5] are highly interrelated and mutually improved. The development of ubiquitous sensing, including wireless sensor networks and their applications, speeds up the production of data [6,7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

A Method of HBase Multi-Conditional Query for Ubiquitous Sensing Applications

Shen

Liao

Dan

et al. 2018

Sensors

View full text Add to dashboard Cite

Big data gathered from real systems, such as public infrastructure, healthcare, smart homes, industries, and so on, by sensor networks contain enormous value, and need to be mined deeply, which depends on a data storing and retrieving service. HBase is playing an increasingly important part in the big data environment since it provides a flexible pattern for storing extremely large amounts of unstructured data. Despite the fast-speed reading by RowKey, HBase does not natively support multi-conditional query, which is a common demand and operation in relational databases, especially for data analysis of ubiquitous sensing applications. In this paper, we introduce a method to construct a linear index by employing a Hilbert space-filling curve. As a RowKey generating schema, the proposed method maps multiple index-columns into a one-dimensional encoded sequence, and then constructs a new RowKey. We also provide a R-tree-based optimization to reduce the computational cost of encoding query conditions. Without using a secondary index mode, experimental results indicate that the proposed method has better performance in multi-conditional queries.

show abstract

Interference Effects Redress over Power-Efficient Wireless-Friendly Mesh Networks for Ubiquitous Sensor Communications across Smart Cities

Cited by 9 publications

References 41 publications

Robust Beamforming Design for SWIPT-Based Multi-Radio Wireless Mesh Network with Cooperative Jamming

Robust Beamforming Design for SWIPT-Based Multi-Radio Wireless Mesh Network with Cooperative Jamming

Low Cost Efficient Deliverying Video Surveillance Service to Moving Guard for Smart Home

A Method of HBase Multi-Conditional Query for Ubiquitous Sensing Applications

Contact Info

Product

Resources

About