scholarly journals Dynamic and adaptive multi-path routing algorithm based on software-defined network

2018 ◽  
Vol 14 (10) ◽  
pp. 155014771880568 ◽  
Author(s):  
Wu Jiawei ◽  
Qiao Xiuquan ◽  
Nan Guoshun
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Video Transmission ◽  
Service Providers ◽  
Routing Algorithm ◽  
Global Network ◽  
Software Defined Network ◽  
Network State ◽  
Computational Overhead

Recently, there has been a surge of the video services over the Internet. However, service providers still have difficulties in providing high-quality video streaming due to the problem of scheduling efficiency and the wide fluctuations of end-to-end delays in the existing multi-path algorithms. To solve these two problems affecting video transmission quality, networks are expected to have the capability of dynamically managing the network nodes for satisfying quality-of-service requirements, which is a challenging issue for media streaming applications. Against this changing network landscape, this article proposes a dynamic and adaptive multi-path routing algorithm under three constraints (packet loss, time delay, and bandwidth) that are based on software-defined network for centralized routing computations and real-time network state updating in multimedia applications. Compared with related multi-path routing proposals, dynamic and adaptive multi-path routing makes efficient use of the latest global network state information achieved by the OpenFlow controller and calculates the optimal routes dynamically according to the real-time status information of the link. Moreover, our proposed algorithm can significantly reduce the computational overhead of the controller while completing a fine-grained flow balance. Experimental results show that dynamic and adaptive multi-path routing significantly outperforms other existing scheduling approaches in achieving a 35%–70% improvement in quality-of-service.

Toward Distributed QoS Driven Wireless Messaging Infrastructure

2012 ◽  
pp. 377-391
Author(s):  
Souheil Khaddaj ◽  
Bippin Makoond
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Video Transmission ◽  
Voice Over Ip ◽  
The Internet ◽  
Banking Services ◽  
Quality Aspects ◽  
Mobile Accessibility ◽  
Mobile Market

The Telecoms market is demanding more services which involve an increased mobile accessibility to the Internet, real time video transmission, real time games, Voice over IP (VOIP), and business critical transactions such as billing transactions and banking services. Meeting these challenges requires the mobile operators to change the way they design their telephony and messaging systems. As the mobile market moves to become more service centric, rather than technology centric, Quality of Service (QoS) has grown to become imperative, since in the Telecoms innovative services are very often short lived, where the quality aspects of a system and the provided services contribute as key differentiators. Thus, the main focus of this chapter is based around the QoS issues which have led to the consideration of a distributed messaging model to address the challenges faced in the Telecoms industry.

scholarly journals Design of ATM Crime Monitoring System Based on MQTT Protocol Using SIM800L and Arduino Mega 2560

2019 ◽  
Author(s):  
Intan Sugiyanti
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Monitoring System ◽  
Data Transmission ◽  
Service Providers ◽  
Security Officers ◽  
Level 1 ◽  
Further Development ◽  
Circuit Configuration

Banks as service providers have to behold to the security of ATM in various regions since CCTV and the existing security officers unable to overcome the problem of ATM damage or burglary maximally. ATM crime monitoring system was created to solve this problem by sending alarms and notifications in real time. The main focus of this paper is to define the data transmission on ATM crime monitoring system using MQTT. MQTT is used on the system as a protocol for sending data from the Arduino Mega 2560 microcontroller and SIM800L devices to the server. All data from various sensor will be sent in JSON format and Quality of Service (QoS) used in MQTT is level 0. Data transmission using MQTT may filter normal conditions and alert conditions on ATM, data sent using 2 topics in order that the data can be used to send notifications and alarms in real time. In this research, SIM800L circuit configuration, SIM800L programming and MQTT protocol on Arduino IDE, and data transmission testing were carried out. The results of the research are that data transmission is successfully sent in real time and the filtered data is successfully divided into 2 conditions, namely under normal conditions and alert conditions. Further development can be done by replacing QoS with level 1 for the security of the data.

Open Innovation in the Shared Mobility Market

2021 ◽  
Vol 7 (4) ◽  
pp. 212
Author(s):  
Katarzyna Turoń ◽  
Andrzej Kubik
Keyword(s):  
Quality Of Service ◽  
Open Innovation ◽  
Service Providers ◽  
Mutual Benefit ◽  
It Service ◽  
Mobility Service ◽  
Factors Influencing ◽  
Shared Mobility ◽  
Practical Recommendations

The market for shared mobility services is growing very quickly. New types of vehicles have been introduced, and the offer of available services and functionalities has expanded, the purpose of which is to improve the quality of service. Despite all the improvements, it is still not possible to speak of achieving full availability of systems that meet the needs of users. This is due to the reluctant involvement of operators of shared mobility systems in joining Mobility as a Service platforms based on the idea of open innovation. The aim of the article is to analyze the factors influencing the limitations in the development of open innovations in the form of Mobility as a Service (MaaS) services. The authors focus on identifying the challenges and concerns faced by shared mobility service providers. The article supports the development of the concept of open innovation in shared mobility services. It also contains practical recommendations for the development of MaaS systems. The results of the developed research can be used by operators of shared mobility services, transport authorities, or IT service providers providing MaaS services to strengthen cooperation and integration using the language of mutual benefit.

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