Telecommunication Arrangement and Procedures to Establish a RTC Connection Between a First and Second Endpoint

• US 20180103484A1
• Filed: 12/12/2017
• Published: 04/12/2018
• Est. Priority Date: 12/16/2014
• Status: Active Grant

• Current Assignee: RingCentral Incorporated
• Original Assignee: Unify GmbH & Co. KG (Atos SE)
• Inventors: Tietsch, Michael, Klaghofer, Karl
• Granted Patent: US 10,455,595 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 61/2514 between local and global IP addresses
• CPC Class Codes: H04L 61/2575 using address mapping retrieval, e.g. simple traversal of user datagram protocol through session traversal utilities for NAT [STUN]
• CPC Class Codes: H04L 61/2589 over a relay server, e.g. traversal using relay for network address translation [TURN]
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 72/56 based on priority criteria

Abstract

A telecommunication system and a method for generating a real time connection between a first endpoint and a second endpoint in an IP network using an ICE STUN connectivity check follow a procedure that includes the steps of generating a list of possible connection paths between the first endpoint and the second endpoint, establishing a respective priority for each possible connection path included in the list, and generating the real time connection between the first endpoint and the second endpoint. During this procedure first there is an attempt to generate the real time connection using the highest-priority connection path. If this is not possible, then the system attempts to establish the real connection using the connection path with the next highest priority, until the real time connection is actually established. Furthermore, for each possible connection path, its respective quality-of-service value is determined and is considered when establishing its priority on the list.

Claims

1-12. -12. (canceled)

13. A method for generating a real time connection in a communication system between a first endpoint and a second endpoint in a network using an ICE STUN connectivity check procedure that comprises:

generating a list of possible connection paths between the first endpoint and the second endpoint,

predicting a quality of service (QoS) for each and every possible connection path identified in the list,

modifying the list of possible connection paths so that a highest-priority connection path is identified as a first possible connection path in the list has a highest predicted QoS and such that possible connection paths that are predicted as providing reductions in QoS are assigned a lower priority and placed at an end of the list, and

facilitating establishment of the real time connection between the first endpoint and the second endpoint based on the modified list.

14. The method of claim 13, wherein the facilitating establishment of the real time connection between the first endpoint and the second endpoint based on the modified list comprises:

first attempting to generate the real time connection using the highest-priority connection path identified in the modified list and, if this is not possible, then attempting to establish the real time connection using the connection path with a next highest priority.

15. The method of claim 14, wherein the facilitating establishment of the real time connection between the first endpoint and the second endpoint based on the modified list also comprises:

generating the real time connection between the first endpoint and the second endpoint based on the modified list to actually establish the real time connection.

16. The method as in claim 13 wherein the network also contains other endpoints and the method comprises:

the first endpoint transmitting predicted QoS values for possible connection paths between the first endpoint and the second endpoint to other endpoints using STUN messages so that the QoS values can be stored by the other endpoints.

17. The method as in claim 13 also comprising considering QoS values from previously established connections for modifying the list of possible connection paths.

18. The method as in claim 13 comprising:

network infrastructure elements inserting QoS values into STUN connectivity check messages sent to at least one of the first endpoint and the second endpoint;

wherein the predicting the QoS for each and every possible connection path identified in the list comprises;

using the QoS values received from the STUN connectivity check messages to predict the QoS for each possible connection path; and

wherein the modifying of the list is performed such that QoS values received from the STUN connectivity check messages are used to predict a QoS for each possible connection path for modifying the list.

19. The method as in claim 18 wherein the network infrastructure elements are routers.

20. The method as in claim 13 also comprising:

defining groups for predicting QoS, each group comprising a plurality of endpoints within a same subnet of the network and having a same connection path from the first endpoint to that subnet of the network, each group assigned a group QoS value that applies to each and every endpoint within the group such that each of the endpoints within the group has the group QoS value assigned as the predicted QoS for the endpoint during the predicting of the QoS for each and every possible connection path identified in the list.

21. The method as in claim 20 wherein the group QoS value is determined from at least one of completed connections and existing connections.

22. The method as in claim 13 wherein a central point of the network is selected to deliver the QoS values to a controlling endpoint for use in modifying the list.

23. The method of claim 22 where the central point is a gateway, a session-border controller or a media server.

24. The method as in claim 13 comprising:

determining predicted QoS values for the possible connection paths and storing the predicted QoS values in a central instance to make the determined predicted QoS values accessible to all endpoints of the network.

25. A non-transitory computer readable storage media containing instructions that are executable by at least one of an endpoint and a router in a communications network which when implemented result in the endpoint or router performing a method comprising:

generating a list of possible connection paths between a first endpoint and a second endpoint,

predicting a quality of service (QoS) for each and every possible connection path identified in the list,

modifying the list of possible connection paths so that a highest-priority connection path is identified as a first possible connection path in the list has a highest predicted QoS and such that possible connection paths that are predicted as providing reductions in QoS are assigned a lower priority and placed at an end of the list, and

facilitating establishment of the real time connection between the first endpoint and the second endpoint based on the modified list.

26. The non-transitory computer readable storage media of claim 25, wherein the facilitating establishment of the real time connection between the first endpoint and the second endpoint based on the modified list comprises:

first attempting to generate the real time connection using the highest-priority connection path identified in the modified list and, if this is not possible, then attempting to establish the real time connection using the connection path with a next highest priority.

27. The non-transitory computer readable storage media of claim 26, wherein the facilitating establishment of the real time connection between the first endpoint and the second endpoint based on the modified list also comprises:

generating the real time connection between the first endpoint and the second endpoint based on the modified list to actually establish the real time connection.

28. A telecommunication system for generating a real time connection between a first endpoint and a second endpoint in a network using a connectivity check procedure, the telecommunications system comprising:

a first endpoint,

a network, through which the first endpoint and a second endpoint are connectable to each other,

wherein the first endpoint is configured such that a list of possible connection paths between the first endpoint and the second endpoint is generatable, a quality of service (QoS) for each and every possible connection path identified in the list is predictable, and the list of possible connection paths is modifiable so that a highest-priority connection path is identified as a first possible connection path in the list has a highest predicted QoS and such that possible connection paths that are predicted as providing reductions in QoS are assigned a lower priority and placed at an end of the list for facilitating establishment of a real time connection between the first endpoint and the second endpoint based on the modified list occurs so that the real time connection is attempted to be established by first attempting to generate the real time connection using the highest-priority connection path identified in the modified list and, if this is not possible, then attempting to establish the real time connection using the connection path with a next highest priority.

29. The system of claim 28, comprising:

network infrastructure elements within the network, each of the network infrastructure elements configured to insert QoS values into STUN connectivity check messages sent to at least one of the first endpoint and the second endpoint;

wherein predicting the QoS for each and every possible connection path identified in the list comprises uses the QoS values received from the STUN connectivity check messages to predict the QoS for each possible connection path; and

wherein modification of the list is performed such that QoS values received from the STUN connectivity check messages are used to predict a QoS for each possible connection path for modifying the list.

30. The system of claim 29 wherein the network infrastructure elements are comprised of routers.

31. The system of claim 28, wherein the first endpoint is configured to define groups for predicting QoS, each group comprising a plurality of endpoints within a same subnet of the network and having a same connection path from the first endpoint to that subnet of the network, each group assigned a group QoS value that applies to each and every endpoint within the group such that each of the endpoints within the group has the group QoS value assigned as the predicted QoS for the endpoint during the predicting of the QoS for each and every possible connection path identified in the list.

32. The system of claim 28, wherein the first endpoint is configured such that modification of the list is performed so that possible connection paths of the list that are predicted as providing reductions in QoS are assigned the lower priority and placed at the end of the list when the possible connection paths are predicted as providing a reduction in quality from a pre-selected QoS level and/or are predicted as being unable to provide the pre-selected QoS level.