Graceful degradation for communication services over wired and wireless networks

• US 8,989,098 B2
• Filed: 02/14/2013
• Issued: 03/24/2015
• Est. Priority Date: 10/19/2007
• Status: Active Grant

• Current Assignee: Voxer IP LLC (Voxer, Inc.)
• Original Assignee: Voxer IP LLC (Voxer, Inc.)
• Inventors: Katis, Thomas E., Panttaja, James T., Panttaja, Mary G., Ranney, Matthew J.
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): JONES, PRENELL P
• Application Number:
  US13/767,747
• Publication Number:
  US 20130158988A1
• Time in Patent Office: 768 Days
• US Class Current: 370/328
• CPC Class Codes: G10L 19/00 Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis in musical instruments G10H
• CPC Class Codes: H04L 51/04 Real-time or near real-time messaging, e.g. instant messaging [IM]
• CPC Class Codes: H04L 51/066 Format adaptation, e.g. format conversion or compression
• CPC Class Codes: H04L 51/226 Delivery according to priorities
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/4015 where at least one of the additional parallel sessions is real time or time sensitive, e.g. white board sharing, collaboration or spawning of a subconference
• CPC Class Codes: H04L 65/4053 without floor control
• CPC Class Codes: H04L 65/752 adapting media to network capabilities
• CPC Class Codes: H04L 65/764 at the destination reformatting of additional data in video clients H04N21/4355

Abstract

A method for gracefully extending the range and/or capacity of voice communication systems is disclosed. The method involves the persistent storage of voice media on a communication device. When the usable bit rate on the network is poor and below that necessary for conducting a live conversation, voice media is transmitted and received by the communication device at the available usable bit rate on the network. Although latency may be introduced, the persistent storage of both transmitted and received media of a conversation provides the ability to extend the useful range of wireless networks beyond what is required for live conversations. In addition, the capacity and robustness in not being affected by external interferences for both wired and wireless communications is improved.

Claims

1. Computer code embedded in a non-transitory computer readable medium, the computer code configured to be executed by a processor on a communication device configured to be connected to a network, the computer code comprising instructions to cause the communication device to perform the following:

receive a voice signal representative of speech of a user of the communication device as the speech is spoken by the user;

encode the voice signal to generate voice media that is a first bit rate representation of the voice signal as the voice signal is received;

store the voice media in persistent storage on the communication device as voice media is encoded and generated;

transmit the voice media on the network as the voice media is encoded, generated and stored when the available bandwidth on the network is adequate to transmit the voice media as the voice media is encoded, generated and stored in the persistent storage; and

transmit the voice media on the network out of the persistent storage when the available bandwidth on the network is not adequate to transmit at the first bit rate of the voice media as the voice media is encoded, generated and stored in the persistent storage.

2. The computer code of claim 1, further comprising instructions to:

generate a second bit rate representation of the voice media, where the second bit rate representation is lower quality than the first bit rate representation; and

transmit the second bit rate representation of the voice media when the available bandwidth on the network is not adequate to transmit at the first bit rate representation of the voice media.

3. The computer code of claim 2, wherein the instructions to generate the second bit rate representation comprise instructions to:

apply a codec to the voice media in generating the second bit rate representation of the voice media.

4. The computer code of claim 2, wherein the instructions to generate the second bit rate representation comprise instructions to:

apply a compression algorithm to the voice media in generating the second bit rate representation of the voice media.

5. The computer code of claim 1, wherein the instructions to transmit the voice media on the network, as the voice media is encoded, generated and stored in the persistent storage, comprise instructions to:

transmit a first plurality of packets of the voice media at a first packetization interval;

adjust the first packetization interval to a second packetization interval depending on available bandwidth of the network; and

transmit a second plurality of packets of the voice media at the second packetization interval.

6. The computer code of claim 1, further comprising instructions to:

ascertain if the speech of the user is time sensitive or not time-sensitive, the speech being time-sensitive if the voice media is to be consumed in substantially real-time by an intended recipient;

transmit the voice media at a first packetization interval if the speech is ascertained as time-sensitive; and

transmit the voice media at a second packetization interval if the speech is ascertained as not time-sensitive, wherein the second packetization interval is larger than the first packetization interval.

7. The computer code of claim 1, further comprising instructions to:

receive incoming voice media from the network;

store the incoming voice media in the persistent storage as the voice media is received from the network; and

selectively render the received voice media, for the first time, in both (i) a near real-time mode as the voice media is received from the network and (ii) a time-shifted mode out of the persistent storage some time after the voice media was received and persistently stored.

8. The computer code of claim 1, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of the network.

9. The computer code of claim 1, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of the network to just above a point before a usable bit rate on the network is reduced to nothing.

10. The computer code of claim 1, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable capacity of the network.

11. The computer code of claim 1, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable capacity of the network when external interference reduces the capacity of the network.

12. The computer code of claim 1, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of the network when external interference reduces the range of the network.

13. The computer code of claim 1, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of live communication on the network.

14. The computer code of claim 1, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable capacity of live communication on the network.

15. A communication device configured to be connected to a network, comprising:

a processor; and

computer code configured to be executed by the processor, wherein the computer code includes instructions that cause the communication device to;

receive a voice signal representative of speech of a user of the communication device as the speech is spoken by the user;

encode the voice signal to generate voice media that is a first bit rate representation of the voice signal as the voice signal is received;

store the voice media in persistent storage on the communication device as voice media is encoded and generated;

transmit the voice media on the network as the voice media is encoded, generated and stored when the available bandwidth on the network is adequate to transmit the voice media as the voice media is encoded, generated and stored in the persistent storage; and

transmit the voice media on the network out of the persistent storage when the available bandwidth on the network is not adequate to transmit at the first bit rate of the voice media as the voice media is encoded, generated and stored in the persistent storage.

16. The communication device of claim 15, wherein the instructions further cause the communication device to:

generate a second bit rate representation of the voice media, where the second bit rate representation is lower quality than the first bit rate representation; and

transmit the second bit rate representation of the voice media when the available bandwidth on the network is not adequate to transmit at the first bit rate representation of the voice media.

17. The communication device of claim 16, wherein the instructions to generate the second bit rate representation comprise instructions to:

apply a codec to the voice media in generating the second bit rate representation of the voice media.

18. The communication device of claim 16, wherein the instructions to generate the second bit rate representation comprise instructions to:

apply a compression algorithm to the voice media in generating the second bit rate representation of the voice media.

19. The communication device of claim 15, wherein the instructions to transmit the voice media on the network, as the voice media is encoded, generated and stored in the persistent storage, comprise instructions to:

transmit a first plurality of packets of the voice media at a first packetization interval;

adjust the first packetization interval to a second packetization interval depending on available bandwidth of the network; and

transmit a second plurality of packets of the voice media at the second packetization interval.

20. The communication device of claim 15, wherein the instructions further cause the communication device to:

ascertain if the speech of the user is time sensitive or not time-sensitive, the speech being time-sensitive if the voice media is to be consumed in substantially real-time by an intended recipient;

transmit the voice media at a first packetization interval if the speech is ascertained as time-sensitive; and

transmit the voice media at a second packetization interval if the speech is ascertained as not time-sensitive, wherein the second packetization interval is larger than the first packetization interval.

21. The communication device of claim 15, wherein the instructions further cause the communication device to:

receive incoming voice media from the network;

store the incoming voice media in the persistent storage as the voice media is received from the network; and

selectively render the received voice media, for the first time, in both (i) a near real-time mode as the voice media is received from the network and (ii) a time-shifted mode out of the persistent storage some time after the voice media was received and persistently stored.

22. The communication device of claim 15, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of the network.

23. The communication device of claim 15, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of the network to just above a point before a usable bit rate on the network is reduced to nothing.

24. The communication device of claim 15, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable capacity of the network.

25. The communication device of claim 15, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable capacity of the network when external interference reduces the capacity of the network.

26. The communication device of claim 15, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of the network when external interference reduces the range of the network.

27. The communication device of claim 15, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable range of live communication on the network.

28. The communication device of claim 15, wherein the instructions to transmit the voice media on the network out of the persistent storage include instructions to transmit the voice media in a manner that effectively extends the usable capacity of live communication on the network.

29. A computer implemented method for transmitting voice media by a communication device connected to a network, comprising:

receiving a voice signal representative of speech of a user of the communication device as the speech is spoken by the user;

encoding the voice signal to generate voice media that is a first bit rate representation of the voice signal as the voice signal is received;

storing the voice media in persistent storage on the communication device as voice media is encoded and generated;

transmitting the voice media on the network as the voice media is encoded, generated and stored when the available bandwidth on the network is adequate to transmit the voice media as the voice media is encoded, generated and stored in the persistent storage; and

transmitting the voice media on the network out of the persistent storage when the available bandwidth on the network is not adequate to transmit at the first bit rate of the voice media as the voice media is encoded, generated and stored in the persistent storage.

30. The method of claim 29, further comprising:

generating a second bit rate representation of the voice media, where the second bit rate representation is lower quality than the first bit rate representation; and

transmitting the second bit rate representation of the voice media when the available bandwidth on the network is not adequate to transmit at the first bit rate representation of the voice media.

31. The method of claim 30, wherein the generating step comprises:

applying a codec to the voice media in generating the second bit rate representation of the voice media.

32. The method of claim 30, wherein the generating step comprises:

applying a compression algorithm to the voice media in generating the second bit rate representation of the voice media.

33. The method of claim 29, wherein the step of transmitting the voice media on the network, as the voice media is encoded, generated and stored in the persistent storage, comprises:

transmitting a first plurality of packets of the voice media at a first packetization interval;

adjusting the first packetization interval to a second packetization interval depending on available bandwidth of the network; and

transmitting a second plurality of packets of the voice media at the second packetization interval.

34. The method of claim 29, further comprising:

ascertaining if the speech of the user is time sensitive or not time-sensitive, the speech being time-sensitive if the voice media is to be consumed in substantially real-time by an intended recipient;

transmitting the voice media at a first packetization interval if the speech is ascertained as time-sensitive; and

transmitting the voice media at a second packetization interval if the speech is ascertained as not time-sensitive, wherein the second packetization interval is larger than the first packetization interval.

35. The method of claim 29, further comprising:

receiving incoming voice media from the network;

storing the incoming voice media in the persistent storage as the voice media is received from the network; and

selectively rendering the received voice media, for the first time, in both (i) a near real-time mode as the voice media is received from the network and (ii) a time-shifted mode out of the persistent storage some time after the voice media was received and persistently stored.

36. The method of claim 29, wherein the step of transmitting the voice media on the network out of the persistent storage includes transmitting the voice media in a manner that effectively extends the usable range of the network.

37. The method of claim 29, wherein the step of transmitting the voice media on the network out of the persistent storage includes transmitting the voice media in a manner that effectively extends the usable range of the network to just above a point before a usable bit rate on the network is reduced to nothing.

38. The method of claim 29, wherein the step of transmitting the voice media on the network out of the persistent storage includes transmitting the voice media in a manner that effectively extends the usable capacity of the network.

39. The method of claim 29, wherein the step of transmitting the voice media on the network out of the persistent storage includes transmitting the voice media in a manner that effectively extends the usable capacity of the network when external interference reduces the capacity of the network.

40. The method of claim 29, wherein the step of transmitting the voice media on the network out of the persistent storage includes transmitting the voice media in a manner that effectively extends the usable range of the network when external interference reduces the range of the network.

41. The method of claim 29, wherein the step of transmitting the voice media on the network out of the persistent storage includes transmitting the voice media in a manner that effectively extends the usable range of live communication on the network.

42. The method of claim 29, wherein the step of transmitting the voice media on the network out of the persistent storage includes transmitting the voice media in a manner that effectively extends the usable capacity of live communication on the network.