InterDigital Inc (IDCC)

[Gamco]

United States Patent 9,832,236
Shaheen November 28, 2017

Collaborative session control transfer and inter-device transfer in internet protocol multimedia subsystem


Abstract

An Internet Protocol (IP) multimedia subsystem (IMS) network node receives a first collaborative session control signaling from a first wireless transmit/receive unit (WTRU) for an existing IMS collaborative session between at least the first WTRU and a second WTRU. The first WTRU is the initial controller of the session. The IMS network node detects that the first collaborative session control signaling from the first WTRU is degraded, and responsively initiates transfer of control of the session to the second WTRU at least in part by: transmitting an IMS-network-node-initiated collaborative session control transfer request to the second WTRU, receiving an acceptance from the second WTRU, and receiving a second collaborative session control signaling for the session from the second WTRU. The session is maintained, at least in part, through the IMS network node both before and after the second WTRU becomes the new controller.



Inventors:
Shaheen; Kamel M. (State College, PA)

Applicant:


Name

City

State

Country

Type


InterDigital Patent Holdings, Inc.
Wilmington
DE
US


Assignee:
InterDigital Patent Holdings, Inc. (Wilmington, DE)


Family ID:
1000002978424

Appl. No.:
15/426,805

Filed:
February 7, 2017


Prior Publication Data






Document Identifier

Publication Date

US 20170149849 A1 May 25, 2017



Related U.S. Patent Documents









Application Number

Filing Date

Patent Number

Issue Date

12943327 Nov 10, 2010 9602555
61264052 Nov 24, 2009
61259818 Nov 10, 2009




Current U.S. Class: 1/1
Current CPC Class: H04L 65/1086 (20130101); H04W 4/16 (20130101); H04L 65/1016 (20130101); H04L 65/1006 (20130101)
Current International Class: H04L 29/06 (20060101); H04W 4/16 (20090101)

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