Title :
Adding real-time networking and QoS capabilities to RTLinux-GPL
Author :
Alegre, José A. ; Pérez, Sergio ; Vila, Joan ; Sala, Josep
Author_Institution :
Dept. of Comput. Eng., Politechnical Univ. of Valencia
Abstract :
This paper presents an architecture to build distributed embedded real-time systems in the RTLinux-GPL platform. The architecture (built in a layered fashion) has being built around open source projects ranging from Ethernet drivers to a CORBA environment. The paper focuses on those layers that give support for QoS and real-time networking over Ethernet networks. The main ideas are: to accomplish deterministic access times by using a TDMA protocol over Ethernet and to multiplex different types of traffic in that real-time network, providing different service types (QoS) to each type of traffic without jeopardizing the a priori guarantee of the system´s real-time properties. Traffic types include real-time messages, multimedia streams and conventional TCP/IP traffic. The traffic multiplexing is achieved using a modular packet scheduler based on the principles of differentiated services architecture. The paper describes in detail the design basics and analyzability of both implementations: a TDMA protocol and a traffic multiplexing (QoS) layer
Keywords :
DiffServ networks; Linux; distributed object management; embedded systems; local area networks; network operating systems; quality of service; telecommunication traffic; time division multiple access; transport protocols; CORBA environment; Ethernet network; QoS capability; RTLinux-GPL; TCP-IP traffic; TDMA protocol; differentiated service architecture; distributed embedded system; modular packet scheduler; multimedia stream; real-time networking; traffic multiplexing; Access protocols; Bandwidth; Computer architecture; Ethernet networks; Linux; Real time systems; Streaming media; TCPIP; Telecommunication traffic; Time division multiple access;
Conference_Titel :
Emerging Technologies and Factory Automation, 2005. ETFA 2005. 10th IEEE Conference on
Conference_Location :
Catania
Print_ISBN :
0-7803-9401-1
DOI :
10.1109/ETFA.2005.1612743