Communication session soft handover

• US 9,107,127 B2
• Filed: 05/23/2013
• Issued: 08/11/2015
• Est. Priority Date: 03/31/2009
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Karaoguz, Jeyhan, Bennett, James
• Primary Examiner(s): RAMPURIA, SHARAD K
• Application Number:
  US13/901,149
• Publication Number:
  US 20130250769A1
• Time in Patent Office: 810 Days
• Field of Search: 455436-445, 370328-338, 370/395.21, 370/401, 370/395.31
• US Class Current: 1/1
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/24 Multipath
• CPC Class Codes: H04L 45/302 Route determination based on requested QoS
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 40/36 due to handover

Abstract

While receiving content for a service at a user device via a particular delivery route, detecting a request for delivery of subsequent content for the service via a secure alternate delivery route. The user device may concurrently receive delivery of the subsequent content via the particular delivery route and the secure alternate delivery route. The detected request may be generated based on QoS associated with the received content of the service. The detected request may be received from a communication network and may comprise identification information for the particular delivery route. The secure alternate delivery route may be determined based on the identification information for the particular delivery route. A communication session profile may be generated and/or determined based on the secure alternate delivery route. The communication session profile is utilized for the requested delivery of the further content via the secure alternate delivery route.

Claims

1. A method comprising:

at a network server,

receiving a service request for delivery of a service of subsequent content for a service over a network to a first network client device;

in response to the service request, selecting a route through the network from a content source to a first network client device;

creating a current communication session profile for delivery of the service;

creating a connection security session profile for delivery of the service during the current communication session;

generating a session identifier for the created current communication session;

communicating the session identifier to the content source and the first network client device;

receiving a communication session handover request for an alternate communication session to continue the service;

selecting an alternate route through the network from the content source to the first network client device;

creating an alternate communication session profile for an alternate communication session;

creating an alternate connection security profile for the alternate communication session;

while current delivery of the service continues, applying the alternate communication session profile and the alternate connection security profile to the selected alternate route through the network to continue delivery of the service through the selected alternate route; and

subsequently, releasing resources of the current communication session.

2. The method of claim 1 wherein selecting an alternate route through the network comprises:

selecting a route through the network that maximizes available bandwidth over the alternate route.

3. The method of claim 1 wherein selecting an alternate route through the network comprises:

selecting a route through the network that ensures a specified quality of service (QoS) for the alternate communication session.

4. The method of claim 1 wherein receiving a service request comprises:

receiving identity information of the first network client device; and

receiving information specifying quality of service (QoS) for the delivery of the service.

5. The method of claim 4 wherein selecting an alternate route through the network comprises:

selecting a route through the network that ensures the specified QoS for the alternate communication session.

6. The method of claim 4 further comprising:

in response to the received identity information of the first network client device, obtaining mobility information for the first network client device;

and wherein selecting a route through the network comprises selecting a route using the mobility information for the first network client device.

7. The method of claim 1 wherein creating a connection security session profile comprises determining one or more of a security check mechanism and an encryption algorithm.

8. A network server comprising:

a server connection management module (SCMM) configured to evaluate network resources and select a route for communication in a network; and

a server processor (SP) in data communication with the SCMM,

the SP configured to receive a service request for delivery of subsequent content for a service over the network to a network client device, the SP configured to forward to the SCMM information of the received service request and to receive in return from the SCMM information defining an initial route through the network for delivery of the service, the SP further configured to generate an initial communication session profile and an initial connection security session profile for an initial communication session and to communicate to the network client device information about the initial communication session profile and the initial connection security session profile for the initial communication session in response to the received service request,

the SP further configured to subsequently receive a communication session handover request to transfer delivery of the subsequent content for the service and to forward to the SCMM information of the received communication session handover request and to receive from the SCMM information defining an alternate route through the network for delivery of the service, the SP further configured to generate an alternate communication session profile and an alternate connection security profile for an alternate communication session over the alternate route through the network and to communicate to the network client device information about the alternate communication session profile and the alternate profile for the alternate communication session.

9. The network server of claim 8 further comprising:

a core resource management module (CRMM) in data communication with the SCMM and configured to determine routes in the network between a content origin and a content destination.

10. The network server of claim 9 wherein the CRMM is configured to provide to the SCMM core resource information about the network including information about network nodes and network links.

11. The network server of claim 8 further comprising:

a server mobility management module in data communication with the SCMM and configured to provide to the SCMM mobility information about devices in the network including the network client device.

12. The network server of claim 8 wherein the SP is configured to activate the alternate communication session to begin providing the service over the alternate route through the network prior to releasing network resources associated with the initial communication session.

13. The network server of claim 8 wherein the SP is configured to receive identity information of the network client device and to receive information specifying quality of service (QoS) for the delivery of the service the network client device, and wherein the SCMM is configured to select a route through the network that ensures the specified QoS for the alternate communication session.

14. The network server of claim 8 wherein the SCMM is configured to select a route through the network that maximizes available bandwidth over the alternate route or that minimizes the number of routers or hops across the route.

15. A method comprising:

at a network management server,

initiating an initial communication session for provision of a particular service over a an initial route through a network between a content source and a network client device;

receiving a communication session handover request from the network client device;

in response to the communication session handover request, determining an alternate route through the network for provision of the particular service;

creating an alternate session profile identified by an alternate session identifier for an alternate communication session over the alternate route through the network for provision of the particular service;

communicating information about the alternate session profile and the alternate session identifier to the network client device;

after initiation of the alternate communication session for provision of the particular service to the network client device over the network, releasing resources associated with the initial communication session.

16. The method of claim 15 further comprising:

after releasing the resources associated with the initial communication session, sending a handover complete message to the network client device.

17. The method of claim 16 wherein sending a handover complete message comprising sending updates to a current serving communication session for updating of session information at the network client device.

18. The method of claim 15 wherein receiving a communication session handover request from the network client device comprising receiving a session identifier identifying the initial communication session, and further comprising:

at the network management server, identifying the initial communication session using the session identifier.

19. The method of claim 15 further comprising:

establishing an alternate connection security profile for use during the alternate communication session; and

communication information about the alternate connection security profile to the network client device.

20. The method of claim 15 wherein receiving a communication session handover request from the network client device comprises:

receiving information defining a desired quality of service (QoS) for the alternate communication session.