JPS562765A - Unidirectional multiple address communication system - Google Patents

Unidirectional multiple address communication system

Info

Publication number
JPS562765A
JPS562765A JP7893579A JP7893579A JPS562765A JP S562765 A JPS562765 A JP S562765A JP 7893579 A JP7893579 A JP 7893579A JP 7893579 A JP7893579 A JP 7893579A JP S562765 A JPS562765 A JP S562765A
Authority
JP
Japan
Prior art keywords
station
transmission
receiving station
negative acknowledge
lower receiving
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
JP7893579A
Other languages
Japanese (ja)
Other versions
JPS5810899B2 (en
Inventor
Shuichi Miyamura
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7893579A priority Critical patent/JPS5810899B2/en
Publication of JPS562765A publication Critical patent/JPS562765A/en
Publication of JPS5810899B2 publication Critical patent/JPS5810899B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/12—Arrangements for observation, testing or troubleshooting
    • 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
    • H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
    • H04L12/1868—Measures taken after transmission, e.g. acknowledgments

Abstract

PURPOSE:To reduce the number of retransmissions from the transmission station to shorten the transmission time, by providing a response proportion comparing means and a retransmission frequency check means in the upper station to avoid retransmitting the same information till disappearance of negative acknowledge. CONSTITUTION:Upper receiving station 5 is provided with receiving signal analyzing part 501 which analyzes signals received from the transmission station, signal distribution part 502 which distributes analyzed signals to lower receiving station 8, negative acknowledge proportion comparing part 503 which counts response signals from lower receiving station 8 to detect the proportion, and retransmission frequency check part 504 which monitors the retransmission frequency. Then, the signal input to terminal 4 through transmission line 3 from the transmission station is analyzed by analyzing part 501 and is distributed to lower receiving station 8, and simultaneously, a negative acknowledge frequency and a retransmission frequency are set to comparing part 503 and check part 504 respectively through line 50, and the negative acknowledge signal from lower receiving station 8 is applied to comparing part 503 through transmission line 10; and if the negative acknowledge signal is a set value or less within a fixed time, it is decided that lower receiving station 8 acknowledges information, thus shortening the transmission time.
JP7893579A 1979-06-22 1979-06-22 Unidirectional broadcast communication method Expired JPS5810899B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7893579A JPS5810899B2 (en) 1979-06-22 1979-06-22 Unidirectional broadcast communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7893579A JPS5810899B2 (en) 1979-06-22 1979-06-22 Unidirectional broadcast communication method

Publications (2)

Publication Number Publication Date
JPS562765A true JPS562765A (en) 1981-01-13
JPS5810899B2 JPS5810899B2 (en) 1983-02-28

Family

ID=13675721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7893579A Expired JPS5810899B2 (en) 1979-06-22 1979-06-22 Unidirectional broadcast communication method

Country Status (1)

Country Link
JP (1) JPS5810899B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0537764A (en) * 1991-09-20 1993-02-12 Fujitsu Ltd Facsimile equipment
US6321268B1 (en) 1994-06-08 2001-11-20 Hughes Electronics Corporation Method and apparatus for selectively retrieving information from a source computer using a terrestrial or satellite interface
US6473793B1 (en) 1994-06-08 2002-10-29 Hughes Electronics Corporation Method and apparatus for selectively allocating and enforcing bandwidth usage requirements on network users

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132700A (en) * 1983-12-21 1985-07-15 Sumitomo Jukikai Envirotec Kk Biological denitrification treatment of sewage in recirculation water channel type aeration tank

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0537764A (en) * 1991-09-20 1993-02-12 Fujitsu Ltd Facsimile equipment
US6321268B1 (en) 1994-06-08 2001-11-20 Hughes Electronics Corporation Method and apparatus for selectively retrieving information from a source computer using a terrestrial or satellite interface
US6338131B1 (en) 1994-06-08 2002-01-08 Hughes Electronics Corporation Network system with TCP/IP ACK reduction
US6473793B1 (en) 1994-06-08 2002-10-29 Hughes Electronics Corporation Method and apparatus for selectively allocating and enforcing bandwidth usage requirements on network users
US6519651B1 (en) 1994-06-08 2003-02-11 Hughes Electronics Corporation Apparatus and method for hybrid network access
US6571296B1 (en) 1994-06-08 2003-05-27 Hughes Electronics Corporation Apparatus and method for hybrid network access
US6931512B2 (en) 1994-06-08 2005-08-16 Hughes Electronics Corporation Method and apparatus for selectively retrieving information from a source computer using a terrestrial or satellite interface

Also Published As

Publication number Publication date
JPS5810899B2 (en) 1983-02-28

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