H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 3/16 (2006.01) H04L 12/56 (2006.01)
Patent
CA 2267475
The ATM transmitting apparatus for transmitting messages, such as frame relay packets, associated with a plurality of connections comprises ATM layer transmission equipment for receiving multiple messages, segmenting each received message into a plurality of smaller data units, such as 48 byte AAL SAR protocol data units, and multiplexing such data units into a single stream for transport over a physical interface. A scheduler receives messages from each of the connections and transfers the messages to the transmission equipment. The scheduler can dynamically set a transmission rate for any connection, and allocates each connection whose message is transferred to the transmission equipment a substantially maximal amount of bandwidth at any given time during the transmission of the message, to thereby minimize interleaving of data units from the various connections and reduce the average latency (per unit of message) in transmitting the messages across a network. The apparatus also reduces latency in variable bit rate connections by scheduling the transfer of messages to the transmission equipment in an order corresponding to the level of a leaky bucket associated with each connection, and by setting the transmission rate for the connection up to its burst rate such that the connection will stay in conformance with its traffic contact.
Alcatel Canada Inc.
Mccarthy Tetrault Llp
Newbridge Networks Corporation
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