CA2018719A1 - Token passing type slotted loop network system with means for enabling high speed access control and simple frame slot stripping - Google Patents

Token passing type slotted loop network system with means for enabling high speed access control and simple frame slot stripping

Info

Publication number
CA2018719A1
CA2018719A1 CA2018719A CA2018719A CA2018719A1 CA 2018719 A1 CA2018719 A1 CA 2018719A1 CA 2018719 A CA2018719 A CA 2018719A CA 2018719 A CA2018719 A CA 2018719A CA 2018719 A1 CA2018719 A1 CA 2018719A1
Authority
CA
Canada
Prior art keywords
priority
token
slots
header
data signal
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
CA2018719A
Other languages
French (fr)
Other versions
CA2018719C (en
Inventor
Hiroshi Shimizu
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
Priority claimed from JP14754289A external-priority patent/JPH0313031A/en
Priority claimed from JP14754189A external-priority patent/JPH0828734B2/en
Priority claimed from JP18305189A external-priority patent/JPH0346849A/en
Application filed by NEC Corp filed Critical NEC Corp
Publication of CA2018719A1 publication Critical patent/CA2018719A1/en
Application granted granted Critical
Publication of CA2018719C publication Critical patent/CA2018719C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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]
    • H04L12/42—Loop networks
    • H04L12/427—Loop networks with decentralised control
    • H04L12/433—Loop networks with decentralised control with asynchronous transmission, e.g. token ring, register insertion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • 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
    • H04L2012/5614—User Network Interface
    • H04L2012/5615—Network termination, e.g. NT1, NT2, PBX
    • 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
    • H04L2012/5614—User Network Interface
    • H04L2012/5616—Terminal equipment, e.g. codecs, synch.
    • 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
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity

Abstract

Abstract of the Disclosure:
In a token passing slotted loop network comprising a master station and a plurality of slave stations, a plurality of slots circulating through the loop and each of the slots having a fixed length and comprising a header portion and a data carrier portion, a particular one of the stations having the token transmitting its own data signal by use of one or more of the slots, the particular station transmits an end mark in the header of a particular one of the slots at an end of transmission of the own data signal and strips incoming slots from a start of the transmission of the own data signal until reception of the end mark circulated through the loop. The particular station frees the token by inserting the token in the header of the particular slot. The token can be inserted in the header of one of the slots after completion of the transmission. Each of the slave stations writes into a priority request section in the header of each slot a particular priority request representative of a priority level of the own data signal when the own data signal occurs thereat. The master station writes the highest one of the priority request into a priority section in the header of each-slot. Each slave station detects the priority in the priority section and starts to acquire the token when the detected priority is lower than the particular priority request.
CA002018719A 1989-06-09 1990-06-11 Token passing type slotted loop network system with means for enabling high speed access control and simple frame slot stripping Expired - Fee Related CA2018719C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP14754289A JPH0313031A (en) 1989-06-09 1989-06-09 Access control system for loop network
JP14754189A JPH0828734B2 (en) 1989-06-09 1989-06-09 Data transfer control method for slotted loop network
JP147542/1989 1989-06-09
JP147541/1989 1989-06-09
JP18305189A JPH0346849A (en) 1989-07-14 1989-07-14 Priority control system for loop network
JP183051/1989 1989-07-14

Publications (2)

Publication Number Publication Date
CA2018719A1 true CA2018719A1 (en) 1990-12-09
CA2018719C CA2018719C (en) 1993-12-21

Family

ID=27319370

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002018719A Expired - Fee Related CA2018719C (en) 1989-06-09 1990-06-11 Token passing type slotted loop network system with means for enabling high speed access control and simple frame slot stripping

Country Status (2)

Country Link
US (1) US5070501A (en)
CA (1) CA2018719C (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5274637A (en) * 1989-12-28 1993-12-28 Yamaha Corporation Token-ring-type local area network
AU1061892A (en) * 1991-02-06 1992-08-13 Fmc Corporation Access to transmit on a message priority basis
US5341374A (en) * 1991-03-01 1994-08-23 Trilan Systems Corporation Communication network integrating voice data and video with distributed call processing
US5216670A (en) * 1991-07-03 1993-06-01 International Business Machines Corporation Message stripping protocol for a communication network
US5603012A (en) * 1992-06-30 1997-02-11 Discovision Associates Start code detector
US5535212A (en) * 1992-12-21 1996-07-09 Otis Elevator Company Implicit token media access protocol without collision detection
US5317565A (en) * 1993-01-26 1994-05-31 International Business Machines Corporation Method of sequencing bus operations in a simplex switch
DE19549462C2 (en) * 1994-11-09 2003-07-03 Alps Electric Co Ltd Multiplex communication system e.g. for vehicle
GB2295070B (en) * 1994-11-09 1999-11-17 Alps Electric Co Ltd Multiplex communication system
DE69837609T2 (en) * 1997-09-17 2007-12-27 British Telecommunications P.L.C. COMMUNICATION NETWORK
GB2338155B (en) * 1998-06-05 2003-02-12 3Com Technologies Ltd Hub system with ring arbitration
DE102006040709B4 (en) * 2006-08-30 2008-08-14 Sick Ag Data transmission method in a daisy chain arrangement
DE102010041427A1 (en) 2010-09-27 2012-03-29 Robert Bosch Gmbh Method for transmitting data

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709364A (en) * 1984-07-25 1987-11-24 Sumitomo Electric Industries, Ltd. Network priority determining method
GB2175774B (en) * 1985-05-24 1988-09-01 Stc Plc Intelligence transmission system of the local area network type
JPS6468156A (en) * 1987-09-09 1989-03-14 Nec Corp Data transfer system
JPH0198343A (en) * 1987-10-12 1989-04-17 Nec Corp Data transmission system for loop transmission system
US4932023A (en) * 1989-06-20 1990-06-05 International Business Machines Corporation Frame stripping protocol for early token release in a ring communication network

Also Published As

Publication number Publication date
CA2018719C (en) 1993-12-21
US5070501A (en) 1991-12-03

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed