CA2264461A1 - Ieee-1394 serial bus network capable of multicast communication - Google Patents

Ieee-1394 serial bus network capable of multicast communication Download PDF

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Publication number
CA2264461A1
CA2264461A1 CA002264461A CA2264461A CA2264461A1 CA 2264461 A1 CA2264461 A1 CA 2264461A1 CA 002264461 A CA002264461 A CA 002264461A CA 2264461 A CA2264461 A CA 2264461A CA 2264461 A1 CA2264461 A1 CA 2264461A1
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CA
Canada
Prior art keywords
channel
channel number
multicast
multicast address
count value
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002264461A
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French (fr)
Other versions
CA2264461C (en
Inventor
Morihisa Momona
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of CA2264461A1 publication Critical patent/CA2264461A1/en
Application granted granted Critical
Publication of CA2264461C publication Critical patent/CA2264461C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40052—High-speed IEEE 1394 serial bus
    • H04L12/40058—Isochronous transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40052—High-speed IEEE 1394 serial bus
    • H04L12/40065—Bandwidth and channel allocation

Abstract

In a communication network where IEEE-1394 nodes are connected to a serial bus, each node functions as a source or a destination for signaling an asynchronous channel setup request containing a multicast address and signaling an asynchronous channel release request. A multicast manager, connected to the bus, includes a channel allocation table having a number of entries each mapping a channel number to a multicast address. The multicast manager responds to the setup request for making a search through the allocation table, setting a node count value to 1, acquiring ownership of a channel number from an isochronous resource manager and mapping the acquired channel number to the multicast address of the request in a corresponding entry of the allocation table if no channel number was mapped to the multicast address or incrementing the node count value by 1 if a channel number is mapped to the multicast address, and then signaling a reply message. The source node responds to this reply message by multicasting asynchronous stream packets to the serial bus. The multicast manager further responds to the asynchronous channel release request for decrementing the node count value by 1. When the node count value equals zero, the ownership of the channel number is restored to the isochronous resource manager and the corresponding entry of the channel allocation table is cleared.
CA002264461A 1998-03-06 1999-03-05 Ieee-1394 serial bus network capable of multicast communication Expired - Fee Related CA2264461C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10-055166 1998-03-06
JP05516698A JP3171241B2 (en) 1998-03-06 1998-03-06 Communication method

Publications (2)

Publication Number Publication Date
CA2264461A1 true CA2264461A1 (en) 1999-09-06
CA2264461C CA2264461C (en) 2003-09-09

Family

ID=12991162

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002264461A Expired - Fee Related CA2264461C (en) 1998-03-06 1999-03-05 Ieee-1394 serial bus network capable of multicast communication

Country Status (5)

Country Link
US (1) US6434117B1 (en)
EP (1) EP0940946B1 (en)
JP (1) JP3171241B2 (en)
CA (1) CA2264461C (en)
DE (1) DE69922072T2 (en)

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Also Published As

Publication number Publication date
US6434117B1 (en) 2002-08-13
EP0940946A1 (en) 1999-09-08
DE69922072T2 (en) 2005-11-24
DE69922072D1 (en) 2004-12-30
EP0940946B1 (en) 2004-11-24
JPH11261606A (en) 1999-09-24
CA2264461C (en) 2003-09-09
JP3171241B2 (en) 2001-05-28

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