WO2003041321A3 - Method and apparatus for packet-based media communication - Google Patents

Method and apparatus for packet-based media communication Download PDF

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Publication number
WO2003041321A3
WO2003041321A3 PCT/CA2002/001696 CA0201696W WO03041321A3 WO 2003041321 A3 WO2003041321 A3 WO 2003041321A3 CA 0201696 W CA0201696 W CA 0201696W WO 03041321 A3 WO03041321 A3 WO 03041321A3
Authority
WO
WIPO (PCT)
Prior art keywords
encoding type
media signal
signal sources
conference
media
Prior art date
Application number
PCT/CA2002/001696
Other languages
French (fr)
Other versions
WO2003041321A2 (en
Inventor
Rafi Rabipour
Paul Coverdale
Paxton Smith
Original Assignee
Nortel Networks Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nortel Networks Ltd filed Critical Nortel Networks Ltd
Priority to EP02771964A priority Critical patent/EP1446908B1/en
Priority to DE60232354T priority patent/DE60232354D1/en
Priority to AU2002336872A priority patent/AU2002336872A1/en
Publication of WO2003041321A2 publication Critical patent/WO2003041321A2/en
Publication of WO2003041321A3 publication Critical patent/WO2003041321A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/765—Media network packet handling intermediate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1023—Media gateways
    • H04L65/103—Media gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1033—Signalling gateways
    • H04L65/104—Signalling gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/403—Arrangements for multi-party communication, e.g. for conferences
    • H04L65/4038—Arrangements for multi-party communication, e.g. for conferences with floor control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/70—Media network packetisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols

Abstract

A conference bridge is provided for managing a conference between media signal sources generating media data packets conveying encoded media information and encoding type information. The media signal sources, in order to enter a conference, generate link messages including respective supported encoding types and transmit the link messages to the conference bridge. The conference bridge receives the link messages and processes them to derive a first common encoding type supported all media signal sources in the conference and a second encoding type supported a subset of media signal sources in the conference. The conference bridge generates link message reply signals conveying the first encoding type and the second encoding type the subset of media signal sources and conveying at least the first encoding type to the media signal sources other than the subset of all media signal sources. Each media signal source is responsive to the link message reply signal to render active at least the first encoding type and selectively render active the second encoding type.
PCT/CA2002/001696 2001-11-09 2002-11-05 Method and apparatus for packet-based media communication WO2003041321A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02771964A EP1446908B1 (en) 2001-11-09 2002-11-05 Method and apparatus for packet-based media communication
DE60232354T DE60232354D1 (en) 2001-11-09 2002-11-05 METHOD AND DEVICE FOR PACKET BASED MEDIA COMMUNICATION
AU2002336872A AU2002336872A1 (en) 2001-11-09 2002-11-05 Method and apparatus for packet-based media communication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/986,498 US7006456B2 (en) 2001-02-02 2001-11-09 Method and apparatus for packet-based media communication
US09/986,498 2001-11-09

Publications (2)

Publication Number Publication Date
WO2003041321A2 WO2003041321A2 (en) 2003-05-15
WO2003041321A3 true WO2003041321A3 (en) 2003-07-24

Family

ID=25532487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2002/001696 WO2003041321A2 (en) 2001-11-09 2002-11-05 Method and apparatus for packet-based media communication

Country Status (5)

Country Link
US (1) US7006456B2 (en)
EP (1) EP1446908B1 (en)
AU (1) AU2002336872A1 (en)
DE (1) DE60232354D1 (en)
WO (1) WO2003041321A2 (en)

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Also Published As

Publication number Publication date
DE60232354D1 (en) 2009-06-25
AU2002336872A1 (en) 2003-05-19
EP1446908A2 (en) 2004-08-18
EP1446908B1 (en) 2009-05-13
US7006456B2 (en) 2006-02-28
US20020105917A1 (en) 2002-08-08
WO2003041321A2 (en) 2003-05-15

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