Granted Patent B2

US 7,746,801 · App. 11/017,940 · Granted Jun 29, 2010

Abstract

Claims (28)

1. A method of monitoring a communication network between an ingress node and an egress node, comprising:

determining, by an ingress node, a quality measurement of a data stream;

determining, by the ingress node, an operating procedure by comparing the quality measurement to a quality control profile, the operating procedure indicating operation of said ingress node and an egress node, and the quality control profile being provided by a monitoring device such that the operating procedure changes based on the quality control profile;

assigning first time stamps to data packet samples of a data stream, by said ingress node;

assigning second time stamps to said data packet samples of said data stream, by said egress node;

determining an evaluation of communication network performances, according to at least one of said first and second time stamps; and

performing the assigning first time stamps step, the assigning second time stamps step, and the determining an evaluation step according to the operating procedure.

2. The method according to claim 1 , wherein said operating procedure includes a sampling rate at which said data packet samples are selected for time stamping by said ingress and egress nodes.

3. The method according to claim 1 , wherein said operating procedure includes at least one of

sending from said ingress node to said egress node, measurement tickets including parameters about said operating procedure, and configuring said assigning step according to said parameters, and

sending from said ingress node to a monitoring device, said measurement tickets including said parameters about said operating procedure and provisioning by said monitoring device of said parameters for configuring said assigning step.

4. The method according to claim 1 , wherein the quality control profile includes at least one criterion and at least one threshold, such that the determining of said operating procedure step is performed if one of said at least one threshold is met by said at least one criterion.

5. The method according to claim 3 , wherein the quality control profile is provisioned by said monitoring device.

6. An ingress node of a communication network comprising:

a time stamping unit configured to assign first time stamps to data packet samples of a data stream, (ii) emit measurement tickets, said measurement tickets including at least said first time stamps, said measurement tickets being for an evaluation of performance of the communication network, and (iii) further configure said program according to an operating procedure; and

a memory unit including (i) a first storage configured to store a quality control profile, and (ii) a second storage configured to store a quality measurement of said data stream, such that said ingress node is further configured to determine said operating procedure by comparing said quality measurement to the quality control profile, and the quality control profile being provided by a monitoring device such that the operating procedure changes based on the quality control profile.

7. The ingress node according to claim 6 , wherein said operating procedure includes a sampling rate at which said data packet samples are selected for time stamping by said ingress node and an egress node.

8. The ingress node according to claim 6 , wherein said operating procedure includes at least one of

sending from said ingress node to said egress nodes, a measurement tickets including parameters about said operating procedure, and configuring said assigning step according to said parameters, and

sending from said ingress node to a monitoring device, a said measurement tickets including said parameters about said operating procedure and provisioning by said monitoring device of said parameters for configuring said assigning step.

9. The ingress node according to claim 6 , wherein the quality control profile includes at least one criterion and at least one threshold, such that is configured to determine said operating procedure if one of said at least one threshold is met by said at least one criterion.

10. The ingress node according to claim 8 , wherein said ingress node is further configured to receive said quality control profile from a monitoring device.

11. A computer readable medium storing computer program instructions for performing a method of monitoring a communication network between an ingress node and an egress node, said computer program instructions defining the steps comprising the method according to claim 1 .

12. A method of monitoring a communication network between an ingress node and an egress node, comprising:

determining, by an ingress node, a quality measurement of a data stream;

determining an operating procedure by comparing the quality measurement to a quality control profile stored in said ingress node, the operating procedure indicating operation of said ingress node and an egress node, and the quality control profile being provided by a monitoring device such that the operating procedure changes based on the quality control profile;

assigning first time stamps to data packet samples of a data stream based on the operating procedure step; and

sending the first time stamps to an egress node, such that the egress node (i) assigns second time stamps to said data packet samples of said data stream and (ii) compares the first time stamps to the second time stamps.

Assignments (8)