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Wireless technology advances over the last few years have led to a wide use of WPAN, WLAN and WMAN. WiFi and Bluetooth technologies have been widely used in recent years (homes, enterprises, university campus, indoors cars …). While the first technology is widely used to connect mobile gadgets the second is widely used to build spontaneous wireless networks and to access Internet. The convergence between Telecommunication and Computer Communication has led to powerful multimedia communication frameworks to implement Real Time Multimedia services. A plethora of mobile terminal devices like mobile phones every day help their users to use multimedia services. These devices include powered sensors that allow technicians to implement rich multimedia services.
Recently very important advances have been produced in the physical level including MIMO technology, Ultra Wide Band, Cognitive Radio... These advances improve the radio signal received by terminals but they do not avoid the terminals loss coverage in certain regions where there is strong radio pollution or simply faults of coverage. As a result, real time communications can be subject to disruptions during an important time interval - a serious problem for real time communications or a user headache for firm real time multimedia communication.
The presentation will include: an analysis of the present convergence between Multimedia Computer Communications and Telecommunications in the wireless world; Reviewing of interesting QoS properties of wireless technologies; Challenges of wireless real time multimedia communications; Different approaches to solve the sudden loss of coverage for multimedia real time communication; and future advances of wireless networks and services. The assistants will be invited to experiments with their own WiFi mobile devices just in case.
Dr. Elsa María Macías López is an associate professor of Telecommunications at Las Palmas de Gran Canaria University, Department of Telematic Engineering, Spain. She received her Ph.D. in Telecommunications (2001) from Las Palmas of Gran Canaria University for her work on Parallel Computing on a LAN-WLAN Cluster Controlling at Runtime the Variation of the Number of Processes. She received her M.S. in Telecommunications (1997) from the same University for her work on Parallelization of Diffuse IR Radiation System Simulation for Indoor Applications. Her research interests are in parallel and distributed computing and infrastructure wireless networks for collaborative computing. Her current research efforts have focused on the management of wireless channel disconnections to prevent abrupt endings of applications. She has published about 8 papers in refereed journals, 40 papers in refereed conferences, 1 paper in Spanish magazine, one educational book and co-editor of one book. She is member of Program & Organizing Committees & Chair sessions for several international and Spanish conferences. She has collaborated in several research projects. Professor Macías teaches telecommunications at the beginning, advanced, and graduate levels, and advises graduate theses in the area of wireless communications and parallel and distributed computing.
Dr. Alvaro Suarez Sarmiento is a Full Professor of Telecommunications, University of Las Palmas de Gran Canaria, Spain. He is the Head of the Telematic Engineering Department at the University of Las Palmas de Gran Canaria, Spain, since 1998. He is an expert reviewer of research projects for the Spanish ministries. In 1990 he started working in systolic computing at the Technical University of Catalonia. Then he turned his attention to network computing and heterogeneous computing in 1994 when he returned to the University of Las Palmas de Gran Canaria where he founded the Concurrency and Architecture Group (GAC). His research interests are in parallel and heterogeneous distributed computing, multimedia collaborative frameworks, and wireless and sensor networks. His current research efforts have focused on the management of wireless channel disconnections to prevent abrupt endings of multimedia applications. He is author and co-author of several papers in the above topics. He has directed and participated in several European, Spanish, Regional and Enterprise research projects.
This tutorial gives an introduction to the NetFPGA platform and how it can be used. It demonstrates the use of the reference router to dynamically re-‐route traffic using PW-‐OSPF with streaming video traffic. It is also show how existing designs can be extended to experiment with buffer sizes.
From the basics of NetFPGA and the networking review needed to get into the field, the tutorial provides a general overview of this community-‐supported platform that has been successfully used for networking research and teaching around the world.
No knowledge of Verilog/VHDL is required to attend the tutorial, although knowledge of these languages is needed to program NetFPGA.
The NetFPGA is and open platform enabling researchers and instructors to build high-‐ speed, hardware-‐accelerated networking systems. The platform can be used in the classroom to teach students how to build Ethernet switches and Internet Prototcol (IP) routers using hardware rather than software.
The platform can be used by researchers to prototype advanced services for next-‐generation networks. By using Field Programmable Gate Arrays (FPGAs), the NetFPGA enables new types of packet routing circuits to be implemented and detailed measurements of network traffic to be obtained.
Adam Covington is a Research Associate of the High-‐Performance Network Group (HPN) at Stanford University. He is currently working on the NetFPGA project, which enables researchers and instructors to build hardware-‐accelerated networking systems. Previously, he was a Research Associate with the Reconfigurable Network Group (RNG) at Washington University in St. Louis. While at Washington University he designed, and implemented clustering algorithms on FPGAs and supported a hardware accelerated classification System on the FPX platform. Adam’s current research interests include reconfigurable systems, artificial intelligence (clustering and classification), and applications of artificial intelligence algorithms. Adam completed a Bachelor of Science degree in Computer Engineering from Western Michigan University in April 2003 and accepted a Distinguished Masters of Science Fellowship from Washington University.
He completed his Masters of Science degree in Computer Science and Engineering from Washington University in December 2006. Adam continues to provide support for the NetFPGA project which includes helping users worldwide as well as arranging and presenting tutorials.
Cesar D. Guerrero is a professor at Universidad Autónoma de Bucaramanga in Colombia. He holds a fellowship from IANAS sponsored by the National Academy of Sciences as a visiting professor at Stanford University. He received his M.S. degree in Computer Science in 2002 and his M.S. degree in Computer Engineering in 2007. In 2008, he got the 2007-‐08 USF Provost Award for Outstanding Teaching by a Graduate Student.
In 2009 and as a Fulbright scholar, he obtained his Ph.D. in Computer Science and Engineering from University of South Florida. His research interest includes Bandwidth Estimation and Network Measurement. Professor Guerrero is the Director of the Engineering and Organizations Research Center at UNAB. He has served as Technical Program Committee member of several conferences and as reviewer of several journals including Computer Networks and Computer Communications, both Elsevier Science journals.
WebRTC is an emerging technology which provides state-of-the-art native RTC (Real Time Communications) to web browsers and will be a very important piece for telecommunications in the coming years. By adding a signaling protocol for establishing media sessions, a browser becomes a full RTC communication device making the WWW the biggest RTC network that have ever existed.
Session Initiation Protocol (SIP) is a mature and widely used signaling protocol for real time session management. A recent IETF specification enables the use of SIP in the WWW by using WebSocket as a signaling transport: "The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)". This new SIP specification facilitates the communication between web browsers and existing SIP devices and makes possible to accommodate web browses into existing SIP infrastructures.
Tutorial sponsored by ELASTIX.
