United States Patent 10,003,933
De Foy , et al. June 19, 2018
Method and apparatus for synchronizing mobile station media flows during a collaborative session
Abstract
A method and apparatus are described for synchronizing mobile station (i.e., wireless transmit/receive unit (WTRU)) media flows during a collaboration session. Inter-WTRU transfer request messages, flow addition request messages and session update request messages may be exchanged between a plurality of WTRUs and a session continuity control application server (SCC-AS). Each of the messages may include a session description protocol (SDP) attribute line containing time synchronization information (e.g., a presentation time offset (PTO) information element (IE), a media flow group identity (ID) and a synchronization tolerance IE). The SCC-AS may update the time synchronization information and include the updated information in messages it sends to the WTRUs, which may re-synchronize their respective media flows based on the updated time synchronization information.
Inventors:
De Foy; Xavier (Kirkland, CA), Patel; Milan (Middlesex, GB), Shaheen; Kamel M. (State College, PA), Purkayastha; Debashish (Collegeville, PA), Lotfallah; Osama (San Diego, CA), Liu; Hang (North Potomac, MD)
Applicant:
Name
City
State
Country
Type
INTERDIGITAL PATENT HOLDINGS, INC.
Wilmington
DE
US
Assignee:
InterDigital Patent Holdings, Inc. (Wilmington, DE)
Family ID:
1000003364962
Appl. No.:
15/402,041
Filed:
January 9, 2017
Prior Publication Data
Document Identifier
Publication Date
US 20170118606 A1 Apr 27, 2017
Related U.S. Patent Documents
Application Number
Filing Date
Patent Number
Issue Date
14691121 Apr 20, 2015 9544127
13370028 Apr 21, 2015 9014170
61442008 Feb 11, 2011
Current U.S. Class: 1/1
Current CPC Class: H04W 4/08 (20130101); H04L 65/403 (20130101); H04L 67/10 (20130101); H04L 67/141 (20130101); H04W 56/001 (20130101)
Current International Class: H04W 4/08 (20090101); H04L 29/06 (20060101); H04W 56/00 (20090101); H04L 29/08 (20060101)
PPP
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