Network or service management system for determining the synchronization between two streams of packets

• US 20030133416A1
• Filed: 01/16/2003
• Published: 07/17/2003
• Est. Priority Date: 01/17/2002
• Status: Active Grant

• Current Assignee: Alcatel SA (Nokia Corporation)
• Original Assignee: Alcatel SA (Nokia Corporation)
• Inventors: Martinot, Olivier, Poupel, Olivier, Gonguet, Arnaud, Delegue, Gerard
• Granted Patent: US 7,443,889 B2
• Time in Patent Office: Days
• US Class Current: 370/235
• CPC Class Codes: H04L 2012/6483 Video, e.g. MPEG
• CPC Class Codes: H04L 2012/6486 Signalling Protocols
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/80 Responding to QoS

Abstract

A network management system for determining the synchronization between two streams of packets transmitted in a transport network measures throughput variations for each of the streams of packets and determines the synchronization by comparing the variations.

Claims

1. A network management system for determining the synchronization between two streams of packets transmitted in a transport network, said system including means for measuring throughput variations for each of said streams of packets and for determining the synchronization by comparing said variations.

2. The network management system claimed in claim 1 wherein said throughput variations are calculated for each stream of packets as the variations of the ratio between the total size of the packets and the total time intervals between two successive packets of said stream of packets, considered over a time window.

3. The network management system claimed in claim 1 wherein two streams of packets are deemed to be synchronized if the difference between their respective throughputs is below a tolerance threshold.

4. A service management system including a network management system as claimed in claim 1.

5. The service management system claimed in claim 4 wherein said streams of packets are associated with the same service.

6. The service management system claimed in claim 5 wherein one or more parameters relating to said synchronization measurement are inserted in a service level specification associated with said service.