Granted Patent B2

US 7,916,686 · App. 11/360,432 · Granted Mar 29, 2011

Abstract

Claims (65)

1. A media signal quality manager for controlling a network node through which passes data traffic, wherein the data traffic conveys a media signal, said media signal quality manager comprising:

a) an input for receiving information conveying a characteristic of the media signal that is usable to indicate degradation of quality of the media signal;

b) a processor responsive to the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal to generate performance control information, wherein the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information about a topology of a communication path over which the media signal is transported, wherein the communication path includes the network node, and wherein the information conveying a characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information indicating that the communication path includes an air interface; and

c) an output for releasing the performance control information to the network node for allowing at least one parameter of the media signal to be adjusted by the network node at a point downstream from where the media signal is received at the network node to influence the quality of the media signal as perceived by a user.

2. A media signal quality manager as defined in claim 1 , wherein said media signal quality manager is implemented physically within the network node.

3. A media signal quality manager as defined in claim 1 , wherein said media signal quality manager is implemented remotely from the network node.

4. A media signal quality manager for controlling a network node through which passes data traffic, wherein the data traffic conveys a media signal, said media signal quality manager comprising:

a) an input for receiving information conveying a characteristic of the media signal that is usable to indicate degradation of quality of the media signal;

b) a processor responsive to the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal to generate performance control information, wherein the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information about a topology of a communication path over which the media signal is transported, wherein the communication path includes the network node, and wherein the information conveying a characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information indicating that the communication path includes a packet sub-network; and

c) an output for releasing the performance control information to the network node for allowing at least one parameter of the media signal to be adjusted by the network node at a point downstream from where the media signal is received at the network node to influence the quality of the media signal as perceived by a user.

5. A media signal quality manager as defined in claim 1 , wherein the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information about delay induced in the media signal.

6. A media signal quality manager as defined in claim 1 , wherein the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information about loss of media signal data.

7. A network node for passing data traffic conveying audio information associated with a voice call, the voice call established over a communication path in a network and including two or more network links, said network node located at a junction between an inbound link and an outbound link of the communication path and comprising:

a) an input for receiving the data traffic including the audio information from the inbound link;

b) an output for releasing the data traffic including the audio information over the outbound link of the communication path;

c) an audio quality manager responsive to information conveying a characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information over the inbound link to generate performance control information, for use in adjusting at least one parameter of the voice call over the outbound link to influence the audio quality of the voice call, wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about a topology of the communication path, and wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information indicating that the communication path includes an air interface.

8. A network node as defined in claim 7 , wherein the information conveying the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information is received via said input.

9. A network node as defined in claim 7 , wherein said audio quality manager processes the audio information associated with the voice call to generate the information conveying the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information.

10. A network node as defined in claim 7 , including a control entity responsive to the performance control information to alter at least one transmission parameter of the voice call over the outbound link susceptible to increase the audio quality of the voice call.

11. A network node for passing data traffic conveying audio information associated with a voice call, the voice call established over a communication path in the network and including two or more network links, said network node located at a junction between an inbound link and an outbound link of the communication path and comprising:

a) an input for receiving the data traffic including the audio information from the inbound link;

b) an output for releasing the data traffic including the audio information over the outbound link of the communication path;

c) an audio quality manager responsive to information conveying a characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information over the inbound link to generate performance control information, for use in adjusting at least one parameter of the voice call over the outbound link to influence the audio quality of the voice call, wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about a topology of the communication path, and wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information indicating that the communication path includes a packet sub-network.

12. A network node as defined in claim 7 , wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information indicating that the communication path includes two or more air interfaces.

13. A network node as defined in claim 7 , wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about loss of audio data over the communication path upstream of the network node.

14. A network node as defined in claim 7 , wherein the audio information associated with the voice call is transported on the communication path in packets, and wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about loss of packets.

15. A network node as defined in claim 7 , wherein the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about delay induced in the audio information associated with the voice call over the communication path.

16. A network node as defined in claim 13 , wherein said control entity is responsive to the information about loss of audio data to adjust a parameter of the voice call to reduce a likelihood of audio data loss over the outbound link of the communication path.

17. A network node as defined in claim 16 , wherein the outbound link includes an air interface, the parameter of the voice call being a relative transmission power of the audio data over the air interface, and wherein said control entity is responsive to the information about loss of audio data to cause an increase of the relative transmission power to reduce a likelihood of audio data loss over the air interface.

18. A network node as defined in claim 17 , wherein audio data is transmitted over the air interface by using a spread spectrum transmission.

19. A network node as defined in claim 15 , wherein said control entity is responsive to the information about delay to control transmission delay of audio data over the outbound link to reduce a degradation of audio quality.

20. A network node as defined in claim 8 , wherein the information conveying the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information is embedded in the voice call.

21. A network node as defined in claim 20 , wherein the information conveying the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information is embedded in the voice call via in-band signaling.

22. A network node as defined in claim 8 , wherein the information conveying the characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information is sent to the network node separately from the audio information associated with the voice call.

23. A network node as defined in claim 7 , wherein the network node includes a media gateway.

24. A network node as defined in claim 7 , wherein the network node includes a radio network controller.

25. A communications network including the network node of claim 7 .

26. A method for managing call quality in a network node passing data traffic conveying audio information associated with a voice call, the voice call established over a communication path in the network and including two or more network links, the network node located at a junction between an inbound link and an outbound link of the communication path, said method comprising:

a) the network node receiving at an input the data traffic from the inbound link;

b) the network node generating performance control information on the basis of at least one characteristic of the voice call over the inbound link that is usable to indicate a degradation of audio quality of the audio information, wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about a topology of the communication path, and wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information indicating that the communication path includes an air interface;

c) the network node adjusting at least one parameter of the voice call at least in part on the basis of the performance control information to reduce degradation of audio quality as audio information is transmitted over the outbound link;

d) the network node releasing an output data traffic including the audio information over the outbound link.

27. A method as defined in claim 26 , including the network node receiving information conveying the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information at the input.

28. A method as defined in claim 26 , including the network node processing the audio information associated with the voice call to generate information conveying the at least one characteristic of the voice call.

29. A method as defined in claim 26 , wherein said adjusting includes altering at least one transmission parameter of the voice call over the outbound link.

30. A method for managing call quality in a network node passing data traffic conveying audio information associated with a voice call, the voice call established over a communication path in the network and including two or more network links, the network node located at a junction between an inbound link and an outbound link of the communication path, said method comprising:

a) the network node receiving at an input the data traffic from the inbound link;

b) the network node generating performance control information on the basis of at least one characteristic of the voice call over the inbound link that is usable to indicate a degradation of audio quality of the audio information;

c) the network node adjusting at least one parameter of the voice call at least in part on the basis of the performance control information to reduce degradation of audio quality as audio information is transmitted over the outbound link;

d) the network node releasing from an output data traffic including the audio information over the outbound link, wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about a topology of the communication path, and wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information indicating that the communication path includes a packet sub-network.

31. A method as defined in claim 26 , wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information indicating that the communication path includes two or more air interfaces.

32. A method as defined in claim 26 , wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about loss of audio data, over the communication path upstream of the network node.

33. A method as defined in claim 32 , wherein the audio information associated with the voice call is transported on the communication path in packets, and wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about loss of packets.

34. A method as defined in claim 26 , wherein the at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information conveys information about delay induced in the audio information associated with the voice call over the communication path.

35. A method as defined in claim 32 , wherein said adjusting reduces a likelihood of audio data loss over the outbound link of the communication.

36. A method as defined in claim 35 , wherein the outbound link includes an air interface, the parameter of the voice call being a relative transmission power of the audio data over the air interface, and wherein said adjusting including causing an increase of the relative transmission power to reduce a likelihood of audio data loss over the air interface.

37. A method as defined in claim 36 , including the network node transmitting the audio data over the air interface by using a spread spectrum transmission.

38. A method as defined in claim 34 , wherein adjusting includes controlling transmission delay of audio data over the outbound link to reduce a degradation of audio quality.

39. A method for managing service quality in a communications network, the communications network including a plurality of nodes, said method comprising:

a) the communications network setting up a voice call over a communication path in said network spanning a plurality of nodes;

b) an audio quality manager communicatively coupled to a certain node adjusting a network performance parameter affecting an audio quality of the voice call over a portion of the communication path downstream the certain node on the basis of at least one characteristic of the voice call that is usable to indicate degradation of audio quality of the audio information over a portion of the communication path upstream the certain node, wherein the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information about a topology of a communication path over which the media signal is transported wherein the communication path includes the network node and wherein the information conveying a characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information indicating that the communication path includes an air interface.

40. A media signal quality manager for controlling a network node through which passes data traffic, wherein the data traffic conveys a media signal, said media signal quality manager comprising:

a) input means for receiving information conveying a characteristic of the media signal that is usable to indicate a degradation of quality of the media signal;

b) processor means responsive to the information conveying a characteristic of the media signal that is usable to indicate degradation of quality of the media signal to generate performance control information, wherein the information conveying the characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information about a topology of a communication path over which the media signal is transported wherein the communication path includes the network node and wherein the information conveying a characteristic of the media signal that is usable to indicate degradation of quality of the media signal conveys information indicating that the communication path includes an air interface; and

c) output means for releasing the performance control information to the network node for allowing at least one parameter of the media signal to be adjusted by the network node at a point downstream from where the media signal is received at the network node to influence the quality of the media signal as perceived by a user.

Assignments (16)