IP Library Granted Patent US 7,646,726
Granted Patent B2
US 7,646,726 · App. 11/149,439 · Granted Jan 12, 2010

System for detecting packetization delay of packets in a network

Assignee: AT&T Intellectual Property 1, L.P.
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Quick Facts
Patent No.
US 7,646,726
App. No.
11/149,439
Granted
Jan 12, 2010
Kind
B2
Abstract

A system is disclosed for detecting packetization delay of packets in a network. The system includes a router to receive at least one packet containing data. A detection system, which is in communication with the router, extracts a codec information and a packet length information from the packet. A management system, which is in communication with the router, receives the codec information and the packet length information and determines packetization delay based on the codec information and the packet length information.

Claims (24)

1. A communications system for detecting packetization delay of packets in a network, the communications system comprising:

a router to receive at least one packet containing data;

a detection system in communication with the router, the detection system to extract a codec information and a packet length information from the packet;

a management system in communication with the router, where the management system receives the codec information and the packet length information and determines packetization delay based on the codec information and the packet length information; and

further including a look-up table that relates the codec information and the packet length information to packetization delay.

2. The communications system of claim 1 , where the management system includes at least one of a network management system, an element management system and an operations support system.

3. The communications system of claim 1 , where the detection system extracts the codec information from a header of a real-time transport protocol.

4. The communications system of claim 1 , where the detection system extracts the packet length information from a header of an Internet protocol.

5. The communications system of claim 1 , where the detection system comprises a software application stored in a memory of the router.

6. A method for detecting packetization delay of packets in a network, comprising:

receiving at least one packet containing data;

extracting a codec information and a packet length information from the packet; and

determining packetization delay based on the codec information and the packet length information and further accessing a look-up table that relates the codec information and the packet length information to packetization delay.

7. The method of claim 6 , further comprising determining the cause of congestion based on the determined packetization delay.

8. The method of claim 6 , where the codec information is extracted from a header of a real-time transport protocol.

9. The method of claim 6 , where the packet length information is extracted from a header of an Internet protocol.

10. The method of claim 6 , further comprising reporting the cause of congestion.

11. A software application stored in a computer-readable memory, the software application for detecting packetization delay of packets in a network, comprising:

a first routine to identify at least one packet containing data;

a second routine to extract a codec information and a packet length information from the packet; and

a third routine to determine packetization delay based on the codec information and the packet length information, where the third routine accesses a look-up table that relates the codec information and the packet length information to packetization delay.

12. The software application of claim 11 , further including a fourth routine to determine a cause of congestion based on the determined packetization delay.

13. The software application of claim 11 , where the second routine extracts the codec information from a header of a real-time transport protocol.

14. The software application of claim 11 , where the second routine extracts the packet length information from a header of an Internet protocol.

Assignments (3)
CHANGE OF NAME Recorded Nov 24, 2009
From: SBC KNOWLEDGE VENTURES, L.P.
To: AT&T KNOWLEDGE VENTURES, L.P.
Reel/Frame 023567/0675 →
CHANGE OF NAME Recorded Nov 24, 2009
From: AT&T KNOWLEDGE VENTURES, L.P.
To: AT&T INTELLECTUAL PROPERTY 1, L.P.
Reel/Frame 023567/0678 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 28, 2005
From: ZHAO, YONGDONG; CHEN, SEAN; CHEN, ZESEN; SOON, SHIH-CHUNG; CHEN, HOLLY
To: SBC KNOWLEDGE VENTURES, L.P.
Reel/Frame 016822/0842 →
Continuity (1)
Related Publication 20060280163A1 · Dec 14, 2006