Time-Driven Priority
Encyclopedia
Time-driven priority
is a synchronous packet scheduling technique that implements UTC-based pipeline forwarding
and can be combined with conventional IP routing to achieve the higher flexibility than another pipeline forwarding implementation known as time-driven switching
(TDS) or fractional lambda switching
(FλS). Packets entering a switch from the same input port during the same [time frame] (TF) can be sent out from different output ports, according to the rules that drive IP packet routing. Operation in accordance to pipeline forwarding principles ensures deterministic quality of service and low complexity packet scheduling. Specifically, packets scheduled for transmission during a TF are given maximum priority; if resources have been properly reserved, all scheduled packets will be at the output port and transmitted before their TF ends.
Various aspects of the technology are covered by several patents issued by both the United States Patent and Trademark Office
and the European Patent Office
.
is a synchronous packet scheduling technique that implements UTC-based pipeline forwarding
Pipeline forwarding
Pipeline forwarding applies to packet forwarding in computer networks the basic concept of pipelining, which has been widely and successfully used in computing — specifically, in the architecture of all major central processing units — and manufacturing — specifically in assembly lines of...
and can be combined with conventional IP routing to achieve the higher flexibility than another pipeline forwarding implementation known as time-driven switching
Time-driven switching
In Telecommunication and Computer networking, Time-Driven Switching is a node by node time variant implementation of Circuit switching, where the propagating datagram is shorter in space than the distance between source and destination...
(TDS) or fractional lambda switching
Fractional lambda switching
Fractional lambda switching leverages on time-driven switching to realize sub-lambda switching in highly scalable dynamic optical networking, which requires minimum buffers. Fractional lambda switching implies switching fractions of optical channels as opposed to whole lambda switching where...
(FλS). Packets entering a switch from the same input port during the same [time frame] (TF) can be sent out from different output ports, according to the rules that drive IP packet routing. Operation in accordance to pipeline forwarding principles ensures deterministic quality of service and low complexity packet scheduling. Specifically, packets scheduled for transmission during a TF are given maximum priority; if resources have been properly reserved, all scheduled packets will be at the output port and transmitted before their TF ends.
Various aspects of the technology are covered by several patents issued by both the United States Patent and Trademark Office
United States Patent and Trademark Office
The United States Patent and Trademark Office is an agency in the United States Department of Commerce that issues patents to inventors and businesses for their inventions, and trademark registration for product and intellectual property identification.The USPTO is based in Alexandria, Virginia,...
and the European Patent Office
European Patent Office
The European Patent Office is one of the two organs of the European Patent Organisation , the other being the Administrative Council. The EPO acts as executive body for the Organisation while the Administrative Council acts as its supervisory body as well as, to a limited extent, its legislative...
.