6533b7d5fe1ef96bd126453f

RESEARCH PRODUCT

Adding Real-Time Networking and QoS Capabilities to RTLinux-GPL

S. SalaA.j. AlegreJ. VilaS. Perez

subject

EthernetSynchronous EthernetTraffic classificationNetwork schedulerDifferentiated servicesComputer sciencebusiness.industryQuality of serviceComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSLocal area networkInternet trafficbusinessComputer network

description

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

yearjournalcountryeditionlanguage
2006-04-062005 IEEE Conference on Emerging Technologies and Factory Automation
https://doi.org/10.1109/etfa.2005.1612743