US 2018/0007550 A1Published application

Internet protocol multimedia system session resurrection

AssigneeT-Mobile USA, Inc.

InventorsCarl Williams, Ming Shan Kwok

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Abstract

The techniques described herein are configured to map a new security association to an active Internet Protocol (IP) Multimedia Subsystem (IMS) session subsequent to the occurrence of a connectivity interruption. In various examples, the connectivity interruption occurs in an access network that supports an IMS network. The new security association is established using an updated IP address that is configured for (e.g., assigned to) a mobile device after the connectivity interruption to the IMS session occurs. The techniques described herein improve network performance because less resources are spent to establish new IMS session in response to the interruption. Rather, in accordance with the examples provided herein, network components can determine that a new security association is associated with an active IMS session, and the network components can map the new security association to the active IMS session (e.g., one for which the IMS has not released the IMS bearer).

Claims20

Dependent claims

One or more devices comprising:

one or more processors;
and
memory storing instructions that, when executed by the one or more processors, cause the one or more devices to:
establish a security association for a mobile device using a first Internet Protocol (IP) address associated with the mobile device;
establish IP Multimedia Subsystem (IMS) session for the mobile device using the security association, the IMS session enabling secure network communications between the mobile device and an end-point device over an access network and an IMS network;
responsive to a connectivity interruption that disables the secure network communications between the mobile device and the end-point device via the IMS session, receive credentials from the mobile device;
establish a new security association for the mobile device using a second IP address associated with the mobile device and the credentials received from the mobile device;
use the credentials received from the mobile device to determine that the mobile device was a participant in the IMS session prior to the connectivity interruption and that the IMS session is an active IMS session in the IMS network;
and
associate the new security association with the active IMS session so that the mobile device is capable of continuing the secure network communications with the end-point device without having to establish a new IMS session.

7 more elements

A method comprising:

assigning, by one or more network devices, a first Internet Protocol (IP) address to a mobile device;
establishing, by the one or more network devices, a security association for the mobile device using the first IP address;
establishing, by the one or more network devices, an IP Multimedia Subsystem (IMS) session for the mobile device using the security association, the IMS session enabling secure network communications between the mobile device and an end-point device over an access network and an IMS network;
responsive to a connectivity interruption that disables the secure network communications between the mobile device and the end-point device via the IMS session, receiving credentials from the mobile device;
establishing, by the one or more network devices, a new security association for the mobile device using a second IP address associated with the mobile device and the credentials received from the mobile device;
and
using the credentials to establish a new security association for the mobile device using a second IP address associated with the mobile device and to map the new security association to the IMS session that is still active in the IMS network so that the mobile device is capable of continuing the secure network communications with the end-point device without having to establish a new IMS session.

4 more elements

One or more non-transitory computer storage media comprising instructions that, when executed by one or more processors, cause one or more network components to perform operations comprising:

establishing a security association for a mobile device using a first Internet Protocol (IP) address associated with the mobile device;
establishing an IP Multimedia Subsystem (IMS) session for the mobile device using the security association, the IMS session enabling secure network communications between the mobile device and an end-point device over an access network and an IMS network;
responsive to a connectivity interruption that disables the secure network communications between the mobile device and the end-point device via the IMS session, receiving credentials from the mobile device;
establishing a new security association for the mobile device using a second IP address associated with the mobile device and the credentials received from the mobile device;
and
using the credentials to establish a new security association for the mobile device and a second IP address associated with the mobile device;
and
using the credentials to map the new security association to the IMS session that is still active in the IMS network so that the mobile device is capable of continuing the secure network communications with the end-point device without having to establish a new IMS session.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/196,930Filed 29 Jun 2016
Published: 4 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

H04L 63/0272
For separating internal from external traffic, e.g. firewalls: virtual private networks
H04L 63/06
Network architectures or network communication protocols for network security: for supporting key management in a packet data network
H04L 63/0876
For authentication of entities: based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or…
H04L 65/1016
Architectures or entities: iP multimedia subsystem [IMS]