US 9,288,157 B2Granted

Time-sensitive switch for scheduled data egress

AssigneeNational Instruments Corporation

InventorsSundeep Chandhoke, Brian Keith Odom

Life of this patent

Estimating the term…

Loading patent…

Abstract

Systems and methods for scheduling data egress using a time-sensitive (TS) network switch. The TS network switch may include a functional unit, a plurality of ports, and a plurality of queues. Each port may be associated with a set of network addresses for TS packets and may be configured with a set of egress periods. Each queue may be associated with a TS packet type and a port. The functional unit may be configured to receive TS packets asynchronously from a network node via a first port, determine a second port for egressing a TS packet, determine an egress period for egressing the TS packet, determine that the TS packet cannot currently be egressed from the second port, queue the TS packet in a first queue, where the first queue is associated with the second port, and egress the TS packet in the respective time window from the second port.

Claims16

Dependent claims

A method for scheduled data egress, comprising:

providing a time-sensitive (TS) network switch, wherein the TS network switch comprises:
a functional unit;
a plurality of ports coupled to the functional unit, wherein each port is associated with a respective set of network addresses for TS packets, wherein each port is configured with a respective set of egress periods, wherein each TS packet has a destination address and a type that specifies a respective egress period, wherein each egress period specifies a respective time window and frequency for egressing TS packets to network nodes based on the type of the TS packets;
and
a plurality of queues, coupled to the plurality of ports and the functional unit, wherein each queue is associated with a respective TS packet type and a respective port of the plurality of ports;
and
configuring the functional unit to:
receive two or more TS packets asynchronously from a network node via a first port;
determine a second port of the plurality of ports for egressing at least two of the two or more TS packets based on the destination address of the at least two TS packets;
determine an egress period for egressing the at least two TS packets based on the type of the at least two TS packets;
determine that the at least two TS packets cannot currently be egressed from the second port;
queue the at least two TS packets in a first queue of the plurality of queues based on the respective TS packet type and destination address in response to determining that the at least two TS packets cannot currently be egressed, wherein the first queue is associated with the second port;
and
egress the at least two TS packets in the respective time window from the second port, wherein specifying the respective time window of the determined egress comprises:
determining a quantity of the at least two TS packets to egress each egress period;
and
configuring the respective time window to allow the egress of the quantity each egress period.

14 more elements

A time-sensitive (TS) network switch for scheduled data egress, comprising:

a functional unit;
a plurality of ports coupled to the functional unit, wherein each port is associated with a respective set of network addresses for TS packets, wherein each port is configured with a respective set of egress periods, wherein each TS packet has a destination address and a type that specifies a respective egress period, wherein each egress period specifies a respective time window and frequency for egressing TS packets to network nodes based on the type of the TS packets;
and
a plurality of queues, coupled to the plurality of ports and the functional unit, wherein each queue is associated with a respective TS packet type and a respective port of the plurality of ports;
wherein the functional unit is configured to:
receive one or more TS packets asynchronously from a network node via a first port;
determine a second port of the plurality of ports for egressing at least one of the one or more the TS packets based on the destination address of the at least two TS packets;
determine an egress period for egressing the at least two TS packets based on the type of the at least two TS packets;
determine that the at least two TS packets cannot currently be egressed from the second port;
queue the at least two TS packets in a first queue of the plurality of queues based on the respective TS packet type and destination address in response to determining that the at least two TS packets cannot currently be egressed, wherein the first queue is associated with the second port;
and
egress the at least two TS packets in the respective time window from the second port.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/054,566Filed 15 Oct 2013
Published: US 2015/0103828 A116 Apr 2015
Granted: 15 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04L 47/805
Actions related to the user profile or the type of traffic: qOS or priority aware
H04L 12/46
Characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]: interconnection of networks
H04L 12/4645
Virtual LANs, VLANs, e.g. virtual private networks [VPN]: details on frame tagging
H04L 45/22
Routing or path finding of packets in data switching networks: alternate routing