Real-time Communication Mechanism Research Articles

A Survey for Women Safety Alert System with Location-Based Notification and Community Awareness

Individual’s safety and well-being in public settings, particularly for women, have emerged as major concerns in modern society. Enhancing public safety by analysing women’s screams and focusing on the detection of suspicious activities and timely intimating it to the nearby police station and preferred contacts. Proposing a comprehensive system that integrates advanced audio processing techniques, machine learning algorithms, real-time communication mechanisms, combination of geospatial technology, mobile applications and sensors connected to wearable devices provides security alerts. This comprehensive approach aims to create a safer environment and empower women to take control of their safety. It’s a wonder technology and community involvement for a greater impact. By using advanced audio processing and machine learning techniques, the system can identify specific patterns or characteristics in screams that may indicate a potential threat. This innovative approach aims to enhance public safety and provide early warning signs in emergency situations. It’s an interesting application of technology that could help improve response times and prevent incidents

SPHERE: A Multi-SoC Architecture for Next-Generation Cyber-Physical Systems Based on Heterogeneous Platforms

This paper presents SPHERE, a project aimed at the realization of an integrated framework to abstract the hardware complexity of interconnected, modern system-on-chips (SoC) and simplify the management of their heterogeneous computational resources. The SPHERE framework leverages hypervisor technology to virtualize computational resources and isolate the behavior of different subsystems running on the same platform, while providing safety, security, and real-time communication mechanisms. The main challenges addressed by SPHERE are discussed in the paper along with a set of new technologies developed in the context of the project. They include isolation mechanisms for mixed-criticality applications, predictable I/O virtualization, the management of time-sensitive networks with heterogeneous traffic flows, and the management of field-programmable gate arrays (FPGA) to provide efficient implementations for cryptography modules, as well as hardware acceleration for deep neural networks. The SPHERE architecture is validated through an autonomous driving use-case.

Research on wireless communication technology based on automatic logistics system of welder

In order to meet the requirements of high real-time and high stability of data transmission in automatic welding system, RTU data format and real-time communication mechanism are adopted in this system. In the automatic logistics system through the Ethernet and wireless WIFI technology will palletizer, stacker, AGV car organically together to complete the palletizer automatic crawling the goods, AGV car automatic delivery, stacking machine automatically out of the Dimensional warehouse. .

English

Real-time applications can be defined as applications that respond within a defined timeframe that can be considered by user as immediate or current. Real-time software applications are different from other real-time systems. Real-time applications deliver information instantly, and increase interaction & engagement between system and users. We have been using real-time technologies for more than a decade, but in the last couple of years, we have seen them in applications that we use frequently. Real-time technologies have matured and users are demanding more of such applications that provide excellent user experience and can engage users for a long duration as well. Therefore, real time technologies and applications have become the integral part of the organizations IT eco system across industry verticals. In this paper, we shall strive to discuss real-time technologies, use cases, challenges with the existing real-time communication mechanism, how SignalR can be used to resolve these issues and in the last section we will look at SignalR security, design considerations and performance improvement as well.

Parallel Implementation of Real-Time Communication and IP Communication by using Multiple Ring Buffers

Recent Linux[7] kernel introduced an interrupt mitigation method called NAPI to reduce the overhead of interrupt handling procedures caused by frame arrival and transmission. However, NAPI caused serious delay and jitter in such procedures. On the other hand, many conventional real-time communication mechanisms were implemented independently to the existing network stack, and most of such mechanisms disabled the stack. There-fore, it is difficult to utilize both of real-time communication and IP communication in parallel. This paper proposed a parallel implementation method to realize both of real-time communication and IP communication simultaneously in a single computer unit. This method implement real-time network stack and IP network stack in parallel by using multiple queue functionality in a NIC (network interface card). Also, this method applied the interrupt mitigation method only to the IP stack. Therefore, this method achieved to reduce the overhead of the wide bandwidth of IP traffic, also to keep delay and jitter of real-time traffic enough small. Some experiments were conducted to measure the performance of the proposed method. The RTT (round trip time) delay of realtime communication was kept lower than 100μs even in high traffic load of 800 Mbit/s with small jitter; while the RTT of IP communication varied between 100μs to 20 ms. This paper introduced the design, implementation, and evaluation of the proposed method.

Reactive GTS Allocation Protocol for Sporadic Events Using the IEEE 802.15.4

Wireless sensor networks (WSNs) find applications in the industrial automation where periodic and sporadic events occur. The combined propagation of information generated by periodic and sporadic events from a sensor node to an actuator node is challenging due to random nature of sporadic events, particularly, if the deadlines are hard. The IEEE 802.15.4 standard provides the basis for a real-time communication mechanism between neighboring nodes of the WSN at the media access control layer. However, the standard does not address such communications over multiple hops. To support the industrial applications with such requirements, this work proposes a novel online control protocol that exploits the basis provided by the IEEE 802.15.4 standard. The proposed control protocol ensures that a given offline sporadic schedule can be adapted online in a timely manner such that the static periodic schedule has not been disturbed and the IEEE 802.15.4 standard compliance remains intact. The proposed protocol is simulated in OPNET. The simulation results are analyzed and presented in this paper to prove the correctness of the proposed protocol regarding the efficient real-time sporadic event delivery along with the periodic event propagation.

2P2-K1 レスポンシブリンクを用いたリアルタイム通信機構(32. ネットワークロボティクス・メカトロニクスにおけるマルチメディアネットワークI)

2P2-K1 レスポンシブリンクを用いたリアルタイム通信機構(32. ネットワークロボティクス・メカトロニクスにおけるマルチメディアネットワークI)