Methods and apparatuses for adjusting bandwidth allocation during a collaboration session

• US 7,979,550 B2
• Filed: 05/24/2007
• Issued: 07/12/2011
• Est. Priority Date: 05/24/2007
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Liu, Yanghua, Xiao, Sihai
• Primary Examiner(s): England; David E
• Application Number:
  US11/753,156
• Publication Number:
  US 20080294758A1
• Time in Patent Office: 1,510 Days
• Field of Search: None
• US Class Current: 709/226
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation

Abstract

In one embodiment, the systems and methods determine an initial bandwidth at a client device; allocate an allocated bandwidth to the client device between a first server and a second server; monitor the allocated bandwidth; and adjust the allocated bandwidth based on a target bandwidth from the first server to the client.

Claims

1. A method comprising:

determining an initial available bandwidth for a client device participating in a collaboration session with other client devices, the collaboration session including an exchange of voice data and of non-voice data;

allocating a first bandwidth to the non-voice data exchanged by the client device and a server during the collaboration session;

monitoring, during the collaboration session, a second bandwidth for the voice data exchanged by the client device during the collaboration session; and

adjusting, during the collaboration session, the first allocated bandwidth for the non-voice data based on a comparison, during the collaboration session, of the voice data'"'"'s second monitored bandwidth to a target bandwidth of the voice data.

2. The method according to claim 1 wherein the target bandwidth corresponds to a target for transmission of the voice data.

3. The method according to claim 1 wherein a second server transmits the voice data for the collaboration session to the client device.

4. The method according to claim 1 further comprising:

calculating the allocated first bandwidth based on the initial available bandwidth.

5. The method according to claim 4 further comprising:

calculating the allocated first bandwidth based on CBW=IBW−

C wherein CBW represents the allocated first bandwidth, IBW represents the initial available bandwidth, and C represents the target bandwidth.

6. The method according to claim 1 wherein determining the initial available bandwidth further comprises:

measuring a throughput of data at the client device.

7. The method according to claim 1 wherein the initial available bandwidth is based on a connection type associated with the client device.

8. The method according to claim 7 wherein the connection type includes one of a DSL connection, a telephone connection, a WiFi connection, and a T1 connection.

9. The method according to claim 1 wherein the adjusting is based on VBV=C−

VCR wherein VBV represents a Voice over Internet Protocol (VoIP) bandwidth variant, VCR represents a detected VoIP bandwidth receiving rate and bandwidth, and C represents the target bandwidth.

10. The method according to claim 1 wherein the adjusting further comprises:

increasing the allocated bandwidth for the non-voice data exchanged between the client device and the server when the second monitored bandwidth of the voice data is less than the target bandwidth for the voice data.

11. The method according to claim 1 wherein the adjusting further comprises:

decreasing the allocated bandwidth for the non-voice data exchanged between the client device and the server when the second monitored bandwidth of the voice data is greater than the target bandwidth for the voice data.

12. A system, comprising:

a processor;

a memory storing program instructions that when executed by the processor implement one or more modules;

a collaboration session detection module configured to detect a collaboration session between a client device and other client devices, the collaboration session including an exchange of voice data and of non-voice data;

a bandwidth allocation module configured to assign a first bandwidth to the non-voice data exchanged between the client device and a server during the collaboration session;

a bandwidth detection module configured to detect an initial bandwidth available to the client device, and further configured to monitor, during the collaboration session, a second bandwidth of the voice data exchanged by the client device during the collaboration session; and

the bandwidth allocation module further configured to adjust, during the collaboration session, the first assigned bandwidth for the non-voice data based on a comparison of the voice data'"'"'s second monitored bandwidth to a target bandwidth for the voice data.

13. The system according to claim 12 further comprising a storage module configured to store content shared during the collaboration session.

14. The system according to claim 12 wherein the voice data is exchanged between the client device and a second server.

15. The system according to claim 12 wherein the bandwidth allocation module is further configured to:

increase the assigned bandwidth of the non-voice data to the client device from the server when the second monitored bandwidth of the voice data is less than the target bandwidth of the voice data.

16. The system according to claim 12 wherein the bandwidth allocation module is further configured to:

decrease the allocated bandwidth of the non-voice data to the client device from the server when the second monitored bandwidth of the voice data is greater than the target bandwidth of the voice data.

17. An apparatus comprising:

a processor;

a memory;

means for determining an initial available bandwidth for a collaboration session between the apparatus and one or more other client devices, the collaboration session including an exchange of voice data and of non-voice data;

means for allocating a first bandwidth to the non-voice data exchanged by the apparatus during the collaboration session;

means for monitoring, during the collaboration session, a second bandwidth for the voice data exchanged by the apparatus during the collaboration session; and

means for adjusting, during the collaboration session, the first allocated bandwidth for the non-voice data based on a comparison of the voice data'"'"'s second monitored bandwidth to a target bandwidth of the voice data.

18. A method comprising:

determining an initial available bandwidth at a client device participating in a collaboration session, the collaboration session including an exchange of voice data and of non-voice data;

based on the initial available bandwidth and an expected second bandwidth needed at the client device for the voice data utilized during the collaboration session, allocating a first bandwidth at the client device for the non-voice data utilized during the collaboration session;

monitoring, during the collaboration session, an actual second bandwidth utilized at the client device for the voice data utilized during the collaboration session;

comparing, during the collaboration session, the expected second bandwidth needed at the client device for the voice data utilized during the collaboration session, to the monitored actual second bandwidth utilized at the client device for the voice data during the collaboration session, and determining therefrom a bandwidth variant; and

based on the determined bandwidth variant, adjusting, during the collaboration session, the first bandwidth allocated at the client device for the non-voice data utilized during the collaboration session to use a portion of the previously allocated first bandwidth, while continuing to utilize the remainder of the previously allocated first bandwidth for the voice data for the collaboration session.

19. The method according to claim 18 wherein the voice data is Voice over Internet protocol (VoIP) data.

20. The method according to claim 18 further comprising:

passing the non-voice data for the collaboration session between the client device and a first server; and

passing the voice data for the collaboration session between the client device and a second server.

21. The method according to claim 18 wherein the initial available bandwidth is estimated based on a connection type of the client device.

22. The method according to claim 18 wherein the allocating bases the first bandwidth on the initial available bandwidth and the expected bandwidth needed for the voice data by evaluating a formula:

CBW=IBW−

C

where CBW represents the first bandwidth, IBW represents the initial available bandwidth and C represents expected second bandwidth needed for the voice data.

23. The method according to claim 18 wherein the comparing determines therefrom the bandwidth variant by evaluating a formula:

VBV=C−

VCR

where VBV represents the bandwidth variant, C represents the expected second bandwidth needed for the voice data, and VCR represents the monitored actual second bandwidth needed for the voice data.

24. An apparatus comprising:

a processor; and

a memory storing program instructions that, when executed on the processor, are operable to

determine an initial available bandwidth for use by a collaboration session that includes an exchange of voice data and of non-voice data,

based on the initial available bandwidth and an expected second bandwidth needed for the voice data utilized during the collaboration session, allocate a first bandwidth for the non-voice data utilized during the collaboration session,

monitor, during the collaboration session, an actual second bandwidth needed for the voice data utilized during the collaboration session,

compare, during the collaboration session, the expected second bandwidth needed for the voice data utilized during the collaboration session to the monitored actual second bandwidth needed for the voice data utilized during the collaboration session, and determine therefrom a bandwidth variant, and

based on the determined bandwidth variant, adjust, during the collaboration session, the first bandwidth allocated for the non-voice data utilized during the collaboration session to use a portion of the previously allocated first bandwidth, while continuing to utilize the remainder of the previously allocated first bandwidth for the voice data for the collaboration session.

25. The apparatus according to claim 24 wherein the voice data is Voice over Internet Protocol (VoIP) data.

26. The apparatus according to claim 24 wherein the program instruction, when executed on the processor, are further operable to pass the non-voice data utilized during the collaboration session between the apparatus and a first server and to pass the voice data utilized during the collaboration session between the apparatus and a second server.