QOS provisioning in a network having dynamic link states

Patent metadata

Field	Value
Publication number	US-9413546-B2
Application number	US-201113006511-A
Country	US
Kind code	B2
Filing date	Jan 14, 2011
Priority date	Dec 9, 2004
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

A network node for a network having dynamic link states includes a processing unit and computer-readable memory for causing the processing unit to monitor a link state of the network; perform QoS provisioning and make appropriate updates to the QoS provisioning based on changes in the link state and QoS provisioning demands of QoS-aware applications; and provide notification to the QoS-aware applications to allow those applications to dynamically adapt to the link state changes.

First claim

The invention claimed is:

1. A system comprising:
means for controlling how a packet is passed over a network using a differentiated services portion of a network management architecture;
means for monitoring network link state;
means for monitoring a request for a Quality of Service (QoS) level from at least one QoS-aware application;
means for adjusting at least one service rate of packet travel controlled by the differentiated services portion by mapping a connection to an appropriate QoS provisioning mechanism, the adjustment to the service rate of packet travel based on change in network link state and the requested QoS level and an available bandwidth; and
means for providing a notification of the change in link state.

2. An article comprising memory encoded with a QoS Service Provider that, when executed by a processor, causes the processor to perform:
QoS provisioning of traffic over a network during requested sessions with QoS-aware applications via dynamic links, including scheduling of packets to be transmitted traffic on the network;
monitoring link states demanded by the QoS-aware applications; and
updating the scheduled packets based on changes to the link states, wherein updating the scheduled packets includes adjusting service rate of packet travel of the scheduled packets based on a requested QoS level and a link state change.

3. The article of claim 2 , wherein the QoS Service Provider, when executed by the processor, further causes the processor to notify a QoS-aware application of a link state change by using a unicast or broadcast function that uses message tags to indicate an acceptable data rate available to a given QoS-aware application.

4. The article of claim 2 , wherein the QoS Service Provider includes a standard differentiated services (DiffServ) portion including a scheduler for scheduling the packets; and wherein filter and policer configurations of the QoS Service Provider are updated dynamically.

5. The article of claim 2 , wherein the memory is further encoded with a QoS-enhanced Socket API that, when executed by the processor, allows session QoS provisioning to be updated based on change in network link state and requested QoS level and an available bandwidth.

6. The article of claim 2 , wherein updating the scheduled packets includes mapping a connection to an appropriate QoS provisioning mechanism using a QSocket function configured to create an endpoint for communication.

7. The article of claim 2 , wherein updating the scheduled packets includes mapping a connection to an appropriate QoS provisioning mechanism using a QConnect function configured to connect to a specific host and port combination.

8. The article of claim 2 , wherein updating the scheduled packets includes mapping a connection to an appropriate QoS provisioning mechanism using a QChange function configured to update a QoS information associated with an existing file descriptor.

9. The article of claim 2 , wherein updating the scheduled packets includes mapping a connection to an appropriate QoS provisioning mechanism using a QClose function configured to close an associated file descriptor.

10. The article of claim 2 , wherein updating the scheduled packets includes mapping a connection to an appropriate QoS provisioning mechanism using a QAttach function configured to associate an existing socket file descriptor with QoS information.

11. The article of claim 2 , wherein updating the scheduled packets includes mapping a connection to an appropriate QoS provisioning mechanism using a QStateUpdateNotification function configured to set a callback function.

12. The article of claim 2 , wherein updating the scheduled packets includes mapping a connection to an appropriate QoS provisioning mechanism using a Q Status function adapted configured to retrieve a status information associated with an existing file descriptor.

Assignees

• Meier John L
• English Kent L
• Ayyagari Arun
• Wang Guijun
• Boeing Co

Inventors

• Meier John L
• English Kent L
• Ayyagari Arun
• Wang Guijun

Classifications

• H04L41/00

  Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks · CPC title

• H04L12/5602 Primary

  Bandwidth control in ATM Networks, e.g. leaky bucket · CPC title

• H04L12/66

  Arrangements for connecting between networks having differing types of switching systems, e.g. gateways · CPC title

• H04L12/24 Primary

  Electricity · mapped topic