WO1997003549A3 - Prioritized access to shared buffers - Google Patents

Prioritized access to shared buffers Download PDF

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Publication number
WO1997003549A3
WO1997003549A3 PCT/US1996/011920 US9611920W WO9703549A3 WO 1997003549 A3 WO1997003549 A3 WO 1997003549A3 US 9611920 W US9611920 W US 9611920W WO 9703549 A3 WO9703549 A3 WO 9703549A3
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WO
WIPO (PCT)
Prior art keywords
link
shared
buffer resource
priority
level
Prior art date
Application number
PCT/US1996/011920
Other languages
French (fr)
Other versions
WO1997003549A2 (en
Inventor
Stephen A Hauser
Stephen A Caldara
Thomas A Manning
Original Assignee
Ascom Nexion Inc
Stephen A Hauser
Stephen A Caldara
Thomas A Manning
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 Ascom Nexion Inc, Stephen A Hauser, Stephen A Caldara, Thomas A Manning filed Critical Ascom Nexion Inc
Priority to JP50686597A priority Critical patent/JP2001519973A/en
Priority to PCT/US1996/011920 priority patent/WO1997003549A2/en
Priority to AU65010/96A priority patent/AU6501096A/en
Publication of WO1997003549A2 publication Critical patent/WO1997003549A2/en
Publication of WO1997003549A3 publication Critical patent/WO1997003549A3/en

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    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
    • H04L2012/5681—Buffer or queue management
    • H04L2012/5682—Threshold; Watermark
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
    • H04L2012/5681—Buffer or queue management
    • H04L2012/5683—Buffer or queue management for avoiding head of line blocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5685—Addressing issues
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Abstract

In a link-level flow controlled system, a method and apparatus providing the ability to partition a buffer resource among multiple prioritized buffer subsets (28) through definition of at least one threshold (102, 104, 106), the buffer resource being shared by a plurality of connections. Different categories of service levels, in terms of delay bounds, are thus enabled. The presently disclosed link-level flow controlled system provides for zero cell loss. The shared buffer resource is divided among N priority pools, defined by N-1 threshold levels, each priority pool attributable to a respective category of service. Link-level counters and registers, disposed in a transmit element, as well as an indication of priority level associated with each connection, are employed in realizing the shared buffer resource.
PCT/US1996/011920 1995-07-19 1996-07-18 Prioritized access to shared buffers WO1997003549A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP50686597A JP2001519973A (en) 1995-07-19 1996-07-18 Prioritized access to shared buffers
PCT/US1996/011920 WO1997003549A2 (en) 1995-07-19 1996-07-18 Prioritized access to shared buffers
AU65010/96A AU6501096A (en) 1995-07-19 1996-07-18 Prioritized access to shared buffers

Applications Claiming Priority (3)

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US149895P 1995-07-19 1995-07-19
US60/001,498 1995-07-19
PCT/US1996/011920 WO1997003549A2 (en) 1995-07-19 1996-07-18 Prioritized access to shared buffers

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WO1997003549A2 WO1997003549A2 (en) 1997-02-06
WO1997003549A3 true WO1997003549A3 (en) 1997-04-03

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AU6501096A (en) 1997-02-18
WO1997003549A2 (en) 1997-02-06

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