Bandwidth allocation for multimedia conferencing

• US 9,444,635 B2
• Filed: 02/09/2012
• Issued: 09/13/2016
• Est. Priority Date: 02/09/2012
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Kanniappan, Senthil K., Lian, Tiong-Hu, Fry, Steven G.
• Primary Examiner(s): Ngo, Ricky
• Assistant Examiner(s): KAO, WEI PO ERIC
• Application Number:
  US13/369,586
• Publication Number:
  US 20130208663A1
• Time in Patent Office: 1,678 Days
• Field of Search: 370259-271
• US Class Current: 1/1
• CPC Class Codes: H04L 12/1818 Conference organisation arrangements, e.g. handling schedules, setting up parameters needed by nodes to attend a conference, booking network resources, notifying involved parties
• CPC Class Codes: H04L 12/1822 Conducting the conference, e.g. admission, detection, selection or grouping of participants, correlating users to one or more conference sessions, prioritising transmission
• CPC Class Codes: H04L 65/4038 with floor control
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/306 User profiles
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities

Abstract

A method can include analyzing endpoint preference data from each of a plurality of endpoints of a multimedia conference. The endpoint preference data for each respective endpoint represents a desired distribution of bandwidth for different types of data in the multimedia conference for each respective endpoint. The method can also include allocating bandwidth between the different types of data for each of the plurality of endpoints in the multimedia conference based on the analysis of the endpoint preference data.

Claims

1. A method comprising:

receiving, by a processor, endpoint preference data from each of a plurality of endpoints of a multimedia conference, wherein receiving the endpoint preference data comprises receiving, from each of the plurality of endpoints, media capabilities comprising a plurality of codecs for different media types and a bandwidth preference for the different media types;

determining a bandwidth distribution of a total bandwidth allocated for the multimedia conference for the different media types, wherein determining the bandwidth distribution comprises determining a fraction for each of the media types based on the received endpoint preference data;

allocating, by the processor, a fraction bandwidth from the total bandwidth to each of the different media types for each of the plurality of endpoints based on the determined fraction, wherein allocating the fraction bandwidth comprises;

proportionally applying the bandwidth distribution to the total bandwidth for each of the plurality of endpoints to determine the fraction bandwidth, and

selecting a first codec from the plurality of codecs to enable communication of the different types of media data commensurate with the allocated fraction bandwidth;

receiving a request, from a first endpoint, to alter a quality of a first media type being received by the first endpoint; and

altering, in real-time, the fraction bandwidth allocated to the first media type for the first endpoint based on the received request, wherein altering the fraction bandwidth comprises selecting a second codec from the plurality of codecs to enable communication of the first media type commensurate with the requested quality of the first media type.

2. The method of claim 1, further comprising weighting, by the processor, the endpoint preference data such that a greater weight is afforded to the endpoint preference data from an endpoint having a greater relative importance than another endpoint determined to have a lesser relative importance, wherein the allocating is based on the weighting.

3. The method of claim 2, wherein the weighting is based on a relative ranking of each of the plurality of endpoints.

4. The method of claim 3, wherein the ranking is based on an identity of a user at each respective endpoint of the multimedia conference.

5. The method of claim 4, wherein the identity of the user is determined prior to the multimedia conference.

6. The method of claim 1, further comprising:

ranking, by the processor, each of the plurality of endpoints of the multimedia conference relative to each other;

assigning, by the processor, a weighting to the endpoint preference data from each endpoint based on the ranking; and

applying, by the processor, the assigned weighting to the endpoint preference data, such that the allocation of bandwidth between the different types for the multimedia conference accounts for the ranking.

7. The method of claim 1, further comprising:

receiving at a control unit the endpoint preference data from each of the plurality of endpoints of the multimedia conference in response to a user input at each respective endpoint; and

storing, by the processor, the endpoint preference data in memory of the control unit.

8. The method of claim 1, wherein determining the fraction comprises determining a percentage of the total available bandwidth that is applied to a total available bandwidth capacity of each respective endpoint of the plurality of endpoints in the multimedia conference.

9. The method of claim 8, wherein at least two endpoints of the multimedia conference have different total bandwidth capacities, the allocation of bandwidth being applied proportionately to the total bandwidth capacity of each of the at least two endpoints for the different media types.

10. The method of claim 1, further comprising dynamically adjusting, by the processor, the allocation of bandwidth during the multimedia conference in response to a change in the endpoint preference data for at least one of the plurality of endpoints.

11. The method of claim 1, further comprising allocating the total bandwidth for each of the plurality of endpoints based on the media capabilities of each of the plurality of endpoints negotiated during call signaling and based on the analysis of the endpoint preference data.

12. The method of claim 1, further comprising:

encoding, by the processor, a portion of the data of the multimedia conference for the given endpoint using a given encoding format; and

encoding, by the processor, a portion of the data of the multimedia conference for the other endpoint using another encoding format.

13. An apparatus comprising:

an analyzer configured to determine a distribution of a total bandwidth for different types of media employed in a multimedia conference, wherein the analyzer being configured to determine the distribution comprises the analyzer being configured to;

receive the user-programmable preference data from a plurality of endpoints of the multimedia conference, the user-programmable data comprising media capabilities comprising a plurality of codecs for different types of media and a bandwidth preference for the different types of media, and

determine a fraction of the total bandwidth for each of the different types of media based on the user-programmable preference data received from the plurality of endpoints of the multimedia conference; and

a bandwidth allocation engine configured to allocate a fraction bandwidth for each of the different types of media of the multimedia conference based on the determined fraction, wherein the bandwidth allocation engine is further configured to allocate the bandwidth for each of the different type of media for each of the plurality of the endpoints in the multimedia conference, based on the distribution of bandwidth and endpoint capabilities, wherein the bandwidth allocation being configured to allocate the fraction bandwidth comprises the bandwidth allocation being configured to;

proportionally apply the bandwidth distribution to the total bandwidth for each of the plurality of endpoints to determine the fraction bandwidth, and

select a first codec from the plurality of codecs to enable communication of the different types of media data commensurate with the allocated fraction bandwidth;

wherein a given endpoint is allocated a different amount of the total bandwidth for the multimedia conference than another endpoint and change the total bandwidth allocated to a given endpoint of the endpoints during the multimedia conference causes reallocation of the bandwidth, wherein the bandwidth allocation engine is further configured to;

receive a request, from a first endpoint, to alter a quality of a first type of media being received by the first endpoint; and

alter, in real-time, the fraction bandwidth allocated to the first type of media based on the received request, wherein the bandwidth allocation engine being configured to alter the fraction bandwidth comprises the bandwidth allocation engine being further configured to select a second codec from the plurality of codecs to enable communication of the first media type commensurate with the requested quality of the first type of media.

14. The apparatus of claim 13, wherein the analyzer is further configured to apply a weight to the user-programmable preference data depending on a relative ranking of each of the plurality of endpoints.

15. The apparatus of claim 14, wherein the relative ranking of each of the plurality of endpoints is based on an identity of a user associated with each respective endpoint of the multimedia conference.

16. The apparatus of claim 15, wherein the identity of the user is determined prior to the multimedia conference.

17. The apparatus of claim 13, wherein the analyzer and the bandwidth allocation engine comprise a control unit in a multi-point multimedia conferencing system, the user-programmable preference data being stored in a memory in response to a user input at each respective endpoint.

18. The apparatus of claim 17, wherein the bandwidth allocation engine is further configured to dynamically adjust the bandwidth allocation during the multimedia conference in response to a change of the user-programmable preference data for at least one of the plurality of endpoints.

19. The apparatus of claim 13, wherein the allocation of bandwidth for the different types of media comprises a percentage of the total available bandwidth that is applied proportionately to a total available bandwidth capacity for each respective endpoint of the plurality of endpoints in the multimedia conference.

20. A method comprising:

receiving, at a given endpoint of a multimedia conference, a plurality of codecs for different types of media and a user preference for distribution of a total bandwidth for the different types of media being communicated with the given endpoint of the multimedia conference;

sending, from the given endpoint to a control unit, the user preference; and

receiving, at the given endpoint bandwidth allocation instructions comprising instruction for a bandwidth distribution for each of the different types of media in the multimedia conference, the bandwidth distribution based upon a fraction of a total bandwidth assigned to the given endpoint for the multimedia conference, the fraction being determined for each of the different types of media based on an evaluation of user preferences for received from a plurality of endpoints in the multimedia conference, wherein receiving the endpoint bandwidth allocation comprises receiving the bandwidth allocation in response to;

proportionally applying the bandwidth distribution to the total bandwidth for each of the plurality of endpoints to determine the fraction bandwidth, and

selecting a first codec from the plurality of codecs to enable communication of the different types of media data commensurate with allocated fraction bandwidth;

receiving a request, from the given endpoint, to alter a quality of a first type of media being received by the given endpoint; and

altering, in real-time, a fraction bandwidth allocated to the first type of media based on the received request, wherein altering the fraction bandwidth comprises selecting a second codec from the plurality of codecs to enable communication of the first type of media commensurate with the requested quality of the first type of media.

21. The method of claim 20, wherein the distribution of bandwidth for the different types of media is set based on applying a weighting to the user preferences for the plurality of endpoints in the multimedia conference based on a relative ranking for the plurality of endpoints.

22. The method of claim 20, further comprising:

receiving, at the given endpoint during the multimedia conference, updated bandwidth allocation instructions; and

adjusting the distribution of bandwidth for each of the different types of media communicated from the given endpoint based on the updated bandwidth allocation instructions.

23. The method of claim 20, wherein receiving the user preference for distribution of bandwidth for the different types of media comprises receiving the user preference as a user input at the given endpoint.

24. The method of claim 23, wherein receiving the user input at the given endpoint comprises receiving the user input during the multimedia conference.

25. The method of claim 20, wherein sending the user preference to the control unit comprises sending the user preference to the control unit remotely located from the given endpoint, the control unit configured to evaluate the user preference.

26. The method of claim 20, further comprising receiving, at the given endpoint, updated bandwidth allocation instructions from the control unit during the multimedia conference, the updated bandwidth allocation instructions characterizing a change in bandwidth allocation at the given endpoint for the multimedia conference.

27. The method of claim 20, wherein the user preference corresponds to a quality of service corresponding to at least one of the different types of media.

28. An apparatus comprising:

a transmitter configured to send, from a given endpoint of a multimedia conference to a control unit a plurality of codecs for different types of media and a user preference for distribution of bandwidth for the different types of media being communicated with the given endpoint of the multimedia conference; and

endpoint controls communicating the different types of media in the multimedia conference with a bandwidth distribution for each of the different types of media, the bandwidth distribution determined according to bandwidth allocation instructions from the control unit, the bandwidth allocation instructions being based on an evaluation of user preferences for multiple endpoints in the multimedia conference to determine a fraction of a total bandwidth allocated to each of the multiple endpoints to be distributed to the different types of media, wherein the endpoint controls is configured to;

proportionally apply the bandwidth distribution to the total bandwidth for each of the plurality of endpoints to determine the fraction bandwidth, and

select a first codec from the plurality of codecs to enable communication of the different types of media data commensurate with the allocated fraction bandwidth;

receive a request, from the given endpoint, to alter a quality of a first types of data being received by the given endpoint; and

alter, in real-time, a fraction bandwidth allocated to the first type of media based on the received request, wherein the endpoint controls being configured to alter the fraction bandwidth comprises the endpoint controls further configured to select a second codec from the plurality of codecs to enable communication of the first type of media commensurate with the requested quality of the first type of media.

29. The apparatus of claim 28, wherein the distribution of bandwidth for the different types of media is set based on applying a weighting to the user preferences for each of the multiple endpoints in the multimedia conference based on a relative ranking for the each of the multiple endpoints.

30. The apparatus of claim 28, further comprising:

a receiver configured to receive updated bandwidth allocation instructions at the given endpoint during the multimedia conference, the endpoint distribution of bandwidth for each of the different types of media communicated from the given endpoint being dynamically adjusted during the multimedia conference based on the updated bandwidth allocation instructions.

31. The apparatus of claim 28, further comprising a user interface configured to set the user preference for distribution of bandwidth for the different types of media in response to a user input at the given endpoint.