Peer-to-Peer Streaming Scheduling to Improve Real-Time Latency

Recently, some proposals suggest to use a peer-to-peer network instead of servers to facilitate SIP user registration and location in IMS communication systems. Due to the lack of central authority, security issue becomes one of the main problems in such P2P IMS systems. In this paper, we propose a novel security architecture for P2P IMS system. By using this architecture, our P2P IMS system becomes a fully distributed secure system in which there is not a central server indeed. Furthermore, our system is a scalable system which is capable of anonymous yet accountable real time communication based on SIP protocol which enables the system compatible with any existing IMS systems.

Download Full-text

Real-time data dissemination in mobile peer-to-peer networks

Journal of Systems and Software ◽

10.1016/j.jss.2013.11.1122 ◽

2014 ◽

Vol 90 ◽

pp. 179-190 ◽

Cited By ~ 2

Author(s):

Fotis Loukos ◽

Helen Karatza ◽

Vana Kalogeraki

Keyword(s):

Real Time ◽

Data Dissemination ◽

Peer To Peer ◽

Peer Networks ◽

Time Data ◽

Peer To Peer Networks ◽

Real Time Data

Download Full-text

A ROS-Simulink Real-Time Communication Bridge Using UDP With a Driver-in-the-Loop Application

Volume 2: Mechatronics; Mechatronics and Controls in Advanced Manufacturing; Modeling and Control of Automotive Systems and Combustion Engines; Modeling and Validation; Motion and Vibration Control Applications; Multi-Agent and Networked Systems; Path Planning and Motion Control; Robot Manipulators; Sensors and Actuators; Tracking Control Systems; Uncertain Systems and Robustness; Unmanned, Ground and Surface Robotics; Vehicle Dynamic Controls; Vehicle Dynamics and Traffic Control ◽

10.1115/dscc2016-9693 ◽

2016 ◽

Author(s):

Mohamed Wahba ◽

Robert Leary ◽

Nicolás Ochoa-Lleras ◽

Jariullah Safi ◽

Sean Brennan

Keyword(s):

Operating System ◽

Real Time ◽

High Speed ◽

Performance Metrics ◽

Proof Of Concept ◽

Physical Separation ◽

Robot Operating System ◽

Time Latency ◽

And Performance ◽

Fast Transmission

This paper presents implementation details and performance metrics for software developed to connect the Robot Operating System (ROS) with Simulink Real-Time (SLRT). The communication takes place through the User Datagram Protocol (UDP) which allows for fast transmission of large amounts of data between the two systems. We use SLRT’s built-in UDP communication and binary packing blocks to send and receive the data over a network. We use implementation metrics from several examples to illustrate the effectiveness and drawbacks of this bridge in a real-time environment. The time latency of the bridge is analyzed by performing loop-back tests and obtaining the statistics of the time delay. A proof of concept experiment is presented that utilizes two laboratories that ran a driver-in-the-loop system despite a large physical separation. This work provides recommendations for implementing data integrity measures as well as the potential to use the system with other applications that demand high speed real-time communication.

Download Full-text