The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2014
Filed:
Mar. 25, 2010
Pier Giorgio Raponi, Rovereto, IT;
Nicola Andriolli, Pisa, IT;
Piero Castoldi, Vicopisano, IT;
Marzio Puleri, Fiano Romano, IT;
Pier Giorgio Raponi, Rovereto, IT;
Nicola Andriolli, Pisa, IT;
Piero Castoldi, Vicopisano, IT;
Marzio Puleri, Fiano Romano, IT;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
A node () for a multi-token optical communications network has optical channels between the node and other nodes, each channel having a token (T, T, T), passed between nodes, to indicate that a corresponding optical channel is available for transmission during a token holding time. The node has a transmitter () for transmitting packets over the optical channels, a buffer () for queuing packets before transmission, and a transmit controller () configured to control the buffer to forward an initial packet or packets from the buffer to the transmitter once a token has been received. The transmit controller determines how much of the token holding time remains after the transmission of the initial packet or packets, and then controls the buffer to forward a further packet according to the remaining token holding time. A maximum packet delay can be reduced where there is asymmetric traffic. A token holding time can be different for different nodes.