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Method and apparatus for synchronizing mobile station media flows during a collaborative session

US9014170B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9014170-B2
Application numberUS-201213370028-A
CountryUS
Kind codeB2
Filing dateFeb 9, 2012
Priority dateFeb 11, 2011
Publication dateApr 21, 2015
Grant dateApr 21, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

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.

First claim

Opening claim text (preview).

What is claimed is: 1. A method of synchronizing media flows for a plurality of wireless transmit/receive units (WTRUs), the method comprising: a first one of the WTRUs transmitting a first message including original time synchronization information and a request to perform an operation on the media flows, wherein the original time synchronization information indicates the difference between a current playback time and a current timestamp to ensure that synchronized playback occur…

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Frequently asked questions

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What does patent US9014170B2 cover?
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…
Who is the assignee on this patent?
De Foy Xavier, Patel Milan, Shaheen Kamel M, and 4 more
What technology area does this patent fall under?
Primary CPC classification H04L65/1016. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Apr 21 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).