Method for transmitting data from applications with different quality

• US 20050131984A1
• Filed: 12/10/2001
• Published: 06/16/2005
• Est. Priority Date: 12/10/2001
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Schneider, Jens, Hofmann, Jens
• Application Number:
  US10/497,964
• Publication Number:
  US 20050131984A1
• Time in Patent Office: Days
• US Class Current: 709/201
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/18 End to end
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/2433 Allocation of priorities to traffic types
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/724 at intermediate nodes, e.g. resource reservation protocol [RSVP]
• CPC Class Codes: H04L 47/801 Real time traffic
• CPC Class Codes: H04L 47/803 Application aware
• CPC Class Codes: H04L 47/805 QOS or priority aware

Abstract

The invention relates to a method for transmitting data of applications with different quality requirements in a packet-oriented data communication network that comprises communication nodes. The inventive method comprises the following steps: a) limiting the data of every application to a defined bit rate in a communication node to be passed during transmission of the data of the respective application; b) generating and storing application-specific contexts in all communication nodes to be passed during transmission of the data of the respective application; c) reserving, in line with the application-specific contexts, transmission resources in all communication nodes to be passed during transmission of the data of the respective application; d) forwarding, in line with the application-specific contexts, the data of every application from a communication node to be passed by the respective application to another communication node to be passed.

Claims

1. A method for transmitting data from applications having different transmission requirements in a packet switched data communication network including communication nodes comprising:

limiting each application'"'"'s data to a prescribed bit rate at a communication node which is to be encountered when a respective application'"'"'s data are transmitted;

creating and storing application specific contexts at the communication nodes which are to be encountered when a respective application'"'"'s data are transmitted;

reserving transmission resources at the communication nodes which are to be encountered when a respective application'"'"'s data are transmitted, in line with the application specific contexts; and

forwarding each application'"'"'s data the communication node which is to be encountered by a respective application to a further communication node which is to be encountered, in line with the application specific contexts.

2. The method as claimed in claim 1, wherein limiting is performed at an access communication node into the packet switched data communication network.

3. The method as claimed in claim 1, wherein each application'"'"'s data are limited to a prescribed bit rate by measuring a volume of the respective application'"'"'s data over a settable time interval in parallel with forwarding of the data and comparing it with the volume of data which corresponds to the prescribed bit rate.

4. The method as claimed in claim 1, wherein reserving is performed for data from applications which require transmission in real time.

5. The method as claimed in claim 1, wherein reserving involves each communication node which is to be encountered by a respective application'"'"'s data using a guaranteed bit rate, required by the respective application, and a maximum supportable bit rate to derive a bandwidth value for a transmission resource which is to be reserved, and reserving the transmission resource.

6. The method as claimed in claim 1, wherein when the application specific contexts are created at each communication node, the ratio of a guaranteed bit rate required by the respective application and a maximum supportable bit rate can be varied.

7. The method as claimed in claim 1, wherein a particular share of transmission resources from total transmission resources is reserved for data from applications which respectively require transmission in real time.

8. The method as claimed in claim 7, wherein the share of transmission resources which is reserved for data from applications which respectively require transmission in real time is chosen to be smaller than a total quantity of transmission resources.

9. The method as claimed in claim 1, wherein forwarding includes the applications'"'"' data being classified into at least two categories in line with the application specific contexts and being forwarded in line with these categories.

10. The method as claimed in claim 9,

wherein the two categories correspond to classification into real-time applications and non-real-time applications.