Realization and performance evaluation of a failure-resistant ATM transport (FRAT) method for high-quality video transmission services

2003 ◽  
Vol 86 (9) ◽  
pp. 90-101 ◽  
Author(s):  
Kazuhiro Fujihara ◽  
Yukihara Kanayama ◽  
Toshinori Tsuboi
Sensors ◽  
2008 ◽  
Vol 8 (8) ◽  
pp. 4529-4559 ◽  
Author(s):  
Hadi Aghdasi ◽  
Maghsoud Abbaspour ◽  
Mohsen Moghadam ◽  
Yasaman Samei

2010 ◽  
Vol 2010 ◽  
pp. 1-14
Author(s):  
Nikolaos Zotos ◽  
Evangelos Pallis ◽  
Anastasios Kourtis

The creation and wide use of new high quality demanding services (VoIP, High Quality Video Streaming) and the delivery of them over already saturated core and access network infrastructures have created the necessity for E2E QoS provisioning. Network Providers use at their infrastructures several kinds of mechanisms and techniques for providing QoS. Most known and widely used technologies are MPLS and DiffServ. The IEEE 802.16-2004 standard (WiMAX) refers to a promising wireless broadband technology with enhanced QoS support algorithms. This document presents an experimental network infrastructure providing E2E QoS, using a combination of MPLS and DiffServ technologies in the core network and WiMAX technology as the wireless access medium for high priority services (VoIP, High Quality Video Streaming) transmission. The main scope is to map the traffic prioritization and classification attributes of the core network to the access network in a way which does not affect the E2E QoS provisioning. The performance evaluation will be done by introducing different kinds of traffic scenarios in a saturated and overloaded network environment. The evaluation will prove that this combination made feasible the E2E QoS provisioning while keeping the initial constrains as well as the services delivered over a wireless network.


1999 ◽  
Vol 121 (2_suppl) ◽  
pp. P187-P188 ◽  
Author(s):  
Ivica Klapan ◽  
Ranko Risavi ◽  
Ljubimko Simicic ◽  
Stjepan Simovic

Author(s):  
Kyosuke Kubo ◽  
Yuta Yoshikawa ◽  
Koji Tashiro ◽  
Leonardo Lanante ◽  
Masayuki Kurosaki ◽  
...  

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Tatsuya Manabe ◽  
Mitsuhiro Takasaki ◽  
Takao Ide ◽  
Kenji Kitahara ◽  
Seiji Sato ◽  
...  

Abstract Background Effective education about endoscopic surgery (ES) is greatly needed for unskilled surgeons, especially at low-volume institutions, to maintain the safety of patients. We have tried to establish the remote educational system using videoconference system through the internet for education about ES to surgeons belonging to affiliate institutions. The aim of this manuscript was to report the potential to establish a comfortable remote educational system and to debate its advantages. Methods We established a local remote educational conference system by combining the use of a general web conferencing system and a synchronized remote video playback system with annotation function through a high-speed internet. Results During 2014–2019, we conducted 14 videoconferences to review and improve surgeons’ skills in performing ES at affiliated institutions. At these conferences, while an uncut video of ES that had been performed at one of the affiliated institutions was shown, the surgical procedure was discussed frankly, and expert surgeons advised improvements. The annotation system is useful for easy, prompt recognition among the audience regarding anatomical structures and procedures that are difficult to explain verbally. Conclusions This system is of low initial cost and offers easy participation and high-quality videos. It would therefore be a useful tool for regional ES education.


2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Iulisloi Zacarias ◽  
Janaína Schwarzrock ◽  
Luciano P. Gaspary ◽  
Andersonn Kohl ◽  
Ricardo Q. A. Fernandes ◽  
...  

Situation awareness in surveillance systems benefits from high-quality video streaming service. This is even more important considering military systems, in which delays in image transmission may have a significant impact on the decision-making process. However, in order to deliver high-quality video streaming service, the required network infrastructure may be prohibitively complex, or even completely impossible to deploy, if mobile data providers are considered. Moreover, the demand for high network throughput poses extra requirements on the network. Considering this context, this paper addresses the problem of highly mobile networks composed of unmanned aerial vehicles (UAVs) as data providers of a military surveillance system. The proposed approach to tackle the problem is based on a Software Defined Networking (SDN) approach aiming at providing the best routes to deliver the data, enhancing the end-user quality of experience. An extensive experimental campaign was performed by means of simulations and the acquired results provide solid evidence of the usefulness of this proposal.


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