Public Wireless Networks Research Articles

An efficient and certificateless conditional privacy-preserving authentication and key agreement scheme for smart healthcare

Smart healthcare overcomes the limitations of time and space, allowing users to access medical and health services anywhere and anytime, thus improving the quality and efficiency of these services. However, due to its excessive reliance on wireless public networks, smart healthcare faces challenges and issues related to communication security. As a result, authentication and key agreement are critical as the first line of defense for smart healthcare communications. Over the past few years, numerous authentication and key agreement schemes have been proposed by experts and scholars, but most of these schemes are not applicable to practical scenarios due to their lack of security and efficiency. To address these issues, we propose an elliptic curve-based certificateless conditional privacy-preserving authentication and key agreement scheme. This scheme does not require endorsement from a Certificate Authority (CA) and features lightweight and secure properties, making it suitable for resource-limited smart healthcare communication. In addition, the security of the proposed scheme is proven under the random oracle model, and its safety is supplemented using BAN logic. Finally, performance analysis reveals that the proposed scheme not only satisfies security property and can withstand general attacks but also offers certain advantages in communication efficiency.

Evaluation on the method of restoring the complex communication environment in the field based on the complex low pressure platform simulation platform

Abstract In recent years, with the development of smart grids, people have increasingly high requirements for the safety, stability, and reliability of smart grid operation. In actual operation, smart grids require real-time monitoring and control, while for low-voltage power lines, power line carrier communication is required for data transmission. However, in practical applications on site, the low-voltage power line environment is complex, with ground faults, electrical equipment interference, and other situations that can affect communication quality and reliability, leading to a decrease in the effectiveness of real-time monitoring and control. The research in this paper is based on a complex low voltage platform simulation platform to restore the on-site complex substation communication environment. The purpose is to improve the efficiency of automatic meter reading systems by using various communication methods in low-voltage substations, such as wireless public network point-to-point data transmission, optical fiber communication data transmission, power line carrier data transmission, etc. Automatic meter reading systems are an important means of low voltage substation communication. This article experimentally tested the maximum personnel allocation for meter reading using low voltage carrier communication technology, which was 8 people smaller than the maximum personnel allocation for traditional meter reading, and the minimum personnel allocation was 8 people smaller than the traditional meter reading personnel allocation. The electricity accuracy of meter reading using low voltage carrier communication was up to 96 %, while the electricity accuracy of traditional meter reading was 70 %. The maximum accuracy of line loss statistics for low voltage carrier communication technology meter reading was 90 %, while the maximum accuracy of line loss statistics for traditional meter reading was 68 %. The frequency of load anomalies found in low-voltage carrier communication meter readings within a month ranged from 30 to 60 times, while the traditional meter readings concentrated on 10–25 times. From these data, it is clear that communication meter reading in low-voltage station areas has advantages over traditional meter reading.

Application of IEC60870-5-101 in distribution automation terminal remote operation and maintenance

The characteristics, structure of extended remote operation and maintenance protocol based on IEC60870-5-101, the normal or abnormal communication process of remote maintenance are introduced, and the transmission of operation and maintenance data between distribution master stations and distribution terminal units is effectively standardized. This paper expounds some common problems and solutions of remote maintenance under current wireless public network communication mode.

Novel Modification of the Collective Dynamic Routing Method for Sensors' Communication in Wi-Fi Public Networks.

The widespread use of the Internet of Things makes it relevant to use public IP networks for simultaneous access by both users and wireless sensors. To achieve this, a significant reduction in the subscriber devices' energy consumption is required. This paper analyzes the application features of the collective dynamic routing method both with and without the use of a robust method for estimating the channel data rate for sensors' communication in wireless public networks. Based on the analysis, a novel modification of the collective dynamic routing method has been developed that reduces the sensors' energy consumption while keeping a high data rate and short delivery time for users. An analysis of the network load, the total data transfer rate over the network, and the parameters affecting the sensors' energy consumption was carried out for a segment of a seamless IEEE 802.11ax network. The simulation demonstrated a high efficiency of using a novel modification of the collective dynamic routing method for access to users and wireless sensors.

Optimal Latency-Oriented Coding and Scheduling in Parallel Queuing Systems

The evolution of 5G and Beyond networks has enabled new applications with stringent end-to-end latency requirements, but providing reliable low-latency service with high throughput over public wireless networks is still a significant challenge. One of the possible ways to solve this is to exploit path diversity, encoding the information flow over multiple streams across parallel links. The challenge presented by this approach is the design of joint coding and scheduling algorithms that adapt to the state of links to take full advantage of path diversity. In this paper, we address this problem for a synchronous traffic source that generates data blocks at regular time intervals (e.g., a video with constant frame rate) and needs to deliver each block within a predetermined deadline. We first develop a closed-form performance analysis in the simple case of two parallel servers without any buffering and single-packet blocks, and propose a model for the general problem based on a Markov Decision Process (MDP). We apply policy iteration to obtain the coding and scheduling policy that maximizes the fraction of source blocks delivered within the deadline: our simulations show the drawbacks of different commonly applied heuristic solutions, drawing general design insights on the optimal policy.

Design and Implementation of Groundwater Monitor Based on GPRS Transmitted

In practical applications, the geological environmental monitoring instruments should have more stringent instrument properties, their resistance to high and low temperature, sealing, corrosion resistance and low power consumption, They are all have higher requirements. While the areas whitout public network coverage are mostly alpine high - altitude areas, the instruments are exposed to relatively harsh geological conditions for a long time. The timely and stable data communication transmission technology is the key technology to ensure stable operation of groundwater dynamic monitoring systems. At present, GSM short message format is mostly used in the groundwater dynamic remote monitoring technology, but this approach is extremely limited in field applications. For obtaining groundwater monitoring parameters not affected by the limitation of public wireless network coverage area, the GPRS satellite positioning and short message technology is adopted, and a kind of data transmission communication apparatus using GPRS satellite is researched. After a large number of indoor debugging and field stability tests, it is proved that the control terminal of groundwater dynamic monitoring and communication developed based on GPRS satellite communication features stable data transmission, low power consumption, good resistance of wind, sand and moisture. It solves the transmission obstacle of groundwater monitoring data in the area without mobile phone signal, and realizes multi - mode groundwater monitoring communication.

Power automation communication technology based on improved genetic algorithm

In order to better promote the development of power enterprises and improve the modern communication means of remote control system, the power automation communication technology based on improved genetic algorithm is proposed. Based on the improved genetic algorithm, the power automation communication model is divided into master station model, communication model and terminal model. The main station of power automation communication is located in the power dispatching center. Through power communication or wireless public network, the collected data is transmitted to power automation for centralized processing. The structure of power automation communication equipment is optimized, and the power automation communication scheme is improved, so as to better realize the research of power automation communication. The experimental results show that the power automation communication technology based on improved genetic algorithm has high monitoring accuracy, can effectively eliminate noise, and has high practical application value.

Smart Wifi Design for Integrated Tourist Destinations in Smart Tourism

The use of public wireless networks and not integrated between tourist destinations is an obstacle for visitors when moving to other tourist destinations. This is an obstacle to internet access in the tourism era 4.0. To overcome this, smart wifi is needed. Smart wifi is an integrated internet network access among other tourist destinations so as to expand the connectivity and interaction of tourist visitors. This study used the NDLC method. The result of this research was the design of smart wifi which was built on a wireless network with captive portal technology and barcode scanning. Smart wifi contributes to the development of digitalization in smart tourism, making it easier for visitors to get internet access in various tourist destinations.

ЗАХИСТ ПУБЛІЧНИХ ТОЧОК ДОСТУПУ WI-FI

Traffic on public wireless networks is mostly unencrypted. Most users are usually unaware of the risks involved, and providers of public Wi-Fi hotspots do not pay attention to this, focusing only on convenience and ease of user to access the network, while ignoring the protection of user data.Cybercriminals effectively use existing security vulnerabilities in public Wi-Fi spots to intercept network traffic and steal sensitive data. To ensure effective counteraction to hacking, an important task is to analyze methods and technologies for detecting and combating such cybercrime attacks.The literature and research reviews of public Wi-Fi spots shows that the justification for the feasibility and effectiveness of using a method or technology of protecting Wi-Fi spots depending on the type of threat, network structure and type is not given enough attention.The aim of this work is to evaluate the effectiveness of modern methods and technologies of protecting public Wi-Fi networks based on the analysis of current threats and vulnerabilities and develop recommendations for their use in deploying and supporting various types and features of public Wi-Fi networks including user devices.Based on the analysis of the most common vulnerabilities and threats of public Wi-Fi spots, features, advantages and disadvantages of currently used technologies and methods to ensure adequate protection of wireless networks, it was recom-mended to implement WEP, WPA, WPA2, WPA3 and OWE technologies depending on the type of user activity and amount of confidential information, the availability of support for a particular end-user protection technology and the relevance of security protocols provided by a particular security technology.

Design and Simulation of Smart Communication System for Unmanned Arial Vehicles

In recent years, the use of drones has drastically increased as the evolution of drone use in commercial sectors and reduced costs of the hardware. Earlier drone services were mostly used for military operations but nowadays the Unmanned Arial Vehicles (UAV) system is very advanced and its applications are not limited to military operations. The recent years have also witnessed a network evolution of UAVs from single ground to air network to multi-UAV network systems along with usage of wireless public networks like LTE which can act as UAV communication channel. In the proposed project, a communication system used in the UAS system is simulated to analyze the UAV behavior under different conditions with respect to mission planning and the communication networks used. A comprehensive study is done on communication networks used in controlling UAVs. For a safer approach, the proposed model is simulated using available software instead of hardware implementations. ArduPilot SITL, MAVProxy and Mission Planner are used to simulate the UAV system virtually. Whereas network simulations of Wi-Fi and LTE network are done with the help of NS-3 on a separate platform. Various network parameters like network delay, throughput, etc., are graphically represented.

A biometrics‐based anonymous authentication and key agreement scheme for wireless sensor networks

SummaryWireless sensor networks (WSNs) are widespreadly applicable for information acquisition and processing in various fields such as military, healthcare, envrionment monitoring, and so on. WSNs have three main components: sensors, gateways, and users. The sensing information from sensors is transmitted to users through gateways. However, the public wireless networks are vulnerable to malicious active and passive attacks, which could bring security and privacy issues. Numerous two‐factor based authentication and key agreement (AKA) protocols have been proposed to solve these issues, whereas these schemes still have some deficiencies. Three‐factor based authentication method can make up for the drawbacks of two‐factor based schemes. Kumari and Renuka put forward a biometrics‐based AKA for WSNs with elliptic curve cryptography (ECC). But their scheme cannot maintain anonymity and resist to impersonality attack, replay attack, and DoS attack. In this article, we propose a biometrics‐based anonymous AKA scheme, which is equipped with the covered security requirements of WSNs. Meanwhile, the proposed scheme are provably secure in the three‐party AKA security model. Performance analysis demonstrates that our scheme has better security properties, communication cost, and computational cost compared with five recent and related schemes.

Research on Real-time and Reliability of Wireless Transmission of High-speed Train Control Data Based on Data Mining Technology

The informationization of high-speed railway is of great significance to the operation and maintenance of high-speed trains. Through the operation and maintenance data communication based on wireless public network, the ground monitoring system can know the real-time status of trains in time, which can facilitate the daily arrangement of inbound inspection and maintenance of trains and improve the operation and maintenance efficiency of high-speed trains. The reliability of data transmission in wireless sensor networks is low under the influence of resource constraints and environmental factors. However, the reliability of data transmission is an important index to evaluate the network performance in application fields such as national defense, military affairs and industrial control. Based on data mining technology, this paper analyzes the real-time, reliability and security of data transmission according to the characteristics of digital mobile communication used for data transmission in railway running and train automatic control. Combined with the characteristics of wireless channel in the environment of intelligent railway transportation system, this paper puts forward concrete measures to improve the performance of wireless link and concrete methods to judge whether wireless transmission can meet the requirements of IRTS environment.

Design of Multi-mode Heterogeneous Fusion Terminal for Power System

With the increasing demand of users and power supply quality in the power grid market, this puts forward higher requirements on the power system. However, the traditional power system has many limitations. People need to be able to upgrade on the basis of the traditional power grid to adapt to changing requirements. The purpose of this paper is to study the design of multi-mode heterogeneous fusion terminal in power system. This article is based on two wireless network technology solutions, GPRS wireless public network and LTE-230 wireless private network, a hardware development platform with STM32F107VCT6 microprocessor as the core, and a μ C/OS-III embedded real-time operating system software development platform, has designed the multi-mode heterogeneous fusion terminal of the electricity information collection system. This article deeply analyzes the demand for multi-mode heterogeneous fusion terminals of the electricity consumption information collection system, which is mainly used for the collection of electricity consumption information and the marketing and distribution automation management of power services; then it analyzes the work of the GPRS network and the LTE-230 network Principle and network system structure. This article designs the communication driver and application program, and analyzes the software architecture in detail. According to the logic processing structure of the internal data of the multi-mode heterogeneous fusion terminal, this article designs the data forwarding process in detail. In this paper, protocol conversion test, interface test and communication test are carried out on multi-mode heterogeneous fusion terminal. The test results show that when the system buffer K is 2 or 4, that is, if the average size of each message in the system is 100 Bytes, and the buffer is set to 800 Bytes, the system loss rate will approach zero.

Digital Village: Modelling of Public Wireless Internet Development using Supply Chain Structure Approach

This study aims to describe the design of rural public wireless internet development based on a supply chain structure approach. Now, many new internet services have sprung up in the private, public, business, education, health, and even governmental sectors until considered as the leading global system. Especially in rural areas, the provision of cable internet networks and cellular internet networks have not been able to reach all rural areas, so a new breakthrough is needed, one of which is a public wireless internet network. This research was conducted with a Design-Based Research approach that combines scientific design methods with the problems that occur for internet development in rural areas of Indonesia. The finding that the development of wireless internet in rural areas can be carried out with the concept of a supply chain structure consisting of suppliers (ISP providers of internet sources), manufacturers (local government or village-owned enterprises managing and transmitting wireless internet to wholesaler), wholesaler (installed 5GHz wireless repeater in people residential areas), retailers (installed 5GHz wireless receiver devices from wholesaler and convert to 2.4GHz wireless transmitters installed in every resident’s house) and customers (each resident’s smartphones or notebooks device connected by wireless).

Research on Improving the Success Rate of Electricity Information Acquisition System by Using Medium Voltage Power Line Carrier Communication Technology

This paper studies the application of medium voltage power line carrier in Electricity Information Acquisition System, discusses the main application scenarios of medium voltage power line carrier, compares three upstream communication modes of medium voltage power line carrier, optical fiber and wireless public network, and summarizes the investment cost, construction and maintenance of medium voltage power line carrier. The field operation proves that the medium voltage carrier communication technology can improve the success rate of Electricity Information Acquisition System.

Use of SPAN for Identified Network Traffic via Machine Learning

Few years back the number of wireless devices and their use in our daily life has been increased a lot. All devices cell phones, laptops, tablets, camera, TVs, home appliances have become a part of network now. As the network devices are growing and getting connected to each other the security risks are getting higher. All the companies and organizations are now establishing and implanting the public and private wireless networks. Organization have to pay heavy cost to implement and integrate all devices together on a network. As wireless networks are more vulnerable to threats and in security's a huge network all the devices should be identified whenever they enter or leave a network traffic pool the experimental work in this paper will elaborate the methods to identify the network traffic identification under encryption. This paper emphases on identification of devices based on layer 2 functionality by MAC (Media Access Code). Later on, the identification was improved using labeled or tagged traffic methods by use of SPAN (Switch port analyzer technique) technology or protocol with assistance ofVirtual Local Area Network. Many Supervised learning methods were examined during experiment and were referenced on data collected by real time traffic. The network traffic of multiple deceives gradually passes through network so incremental learning method is implemented as classification for streaming data.

A Method of Network Coding to Ensure Public Network Security

When connecting to the wireless network in public places, users’ personal information will be exposed in the public network, which is easy to be stolen and tampered with by third parties. In this paper, the author proposes a method to protect user information when connecting to public wireless networks in order to protect users’ privacy. Random linear network coding is used to encrypt the accessed user serial number, which is then forwarded to the upper layer. When transmitted to a specific node, the encrypted information is transmitted to the server for information decryption. After decoding the user serial number, the node is accessed. In this way, we can encrypt user information, reduce the delay time of forwarding, and improve the transmission efficiency. The time complexity is O(n2).

Research of the communication technologies for transmission line monitoring

Power transmission line monitoring systems are widely used in power grid in recent years. The communication bottleneck of the power transmission line monitoring systems focuses on the communication network of high definition video monitoring. This paper analyzes several communication solutions for the high definition video monitoring in power transmission line monitoring systems, including public wireless network, wireless mesh network, optical fiber network, and fiber-wireless hybrid network. Through technical comparison, this paper demonstrates that fiber-wireless hybrid network combines the advantages of optical fiber network and wireless mesh network, and it is the most suitable communication solution for power transmission line monitoring.

Key technology research for mobile police terminal fingerprint collection for quick comparison using automated fingerprint identification system

When the face of the inspected person and the photograph on their identification (ID) card cannot be clearly matched, the individual is undocumented, or the ID is forged, it is often difficult for the on-site police to respond in time. This study proposes a number of key technologies for collecting fingerprints at mobile terminals for fast comparison using an automated fingerprint ID system (AFIS). These technologies ensure intelligent mobile fingerprint collection and allow the transmission of fingerprint information from the terminal to AFIS, over a wireless public security network for real-time fingerprint comparison. This study also analyzes the feasibility and effectiveness of the proposed technologies for system design and the applicability of fingerprint ID algorithms. The system achieved good results in a test by the Shanghai Public Security Bureau Criminal Investigation Corps.

Application of wireless public communication network in meter reading system

Application of wireless public communication network in meter reading system