JPS56123150A - Automatic resending system of data transmission - Google Patents

Automatic resending system of data transmission

Info

Publication number
JPS56123150A
JPS56123150A JP2713780A JP2713780A JPS56123150A JP S56123150 A JPS56123150 A JP S56123150A JP 2713780 A JP2713780 A JP 2713780A JP 2713780 A JP2713780 A JP 2713780A JP S56123150 A JPS56123150 A JP S56123150A
Authority
JP
Japan
Prior art keywords
block
time
received
ack
resent
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
JP2713780A
Other languages
Japanese (ja)
Other versions
JPS637495B2 (en
Inventor
Toshio Takahashi
Masayuki Yasunaga
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP2713780A priority Critical patent/JPS56123150A/en
Publication of JPS56123150A publication Critical patent/JPS56123150A/en
Publication of JPS637495B2 publication Critical patent/JPS637495B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1809—Selective-repeat protocols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To obtain a throughput characteristic close to an ideal value by a small- capacity buffer memory by inputting only a new data block received correctly and a resent data block received correctly for the first to the buffer memory. CONSTITUTION:Between time t0 and time t1, data block D3 is the 1st error block, so the resending on the SR system is done once and blocks D5 and D8 regarded as NACK (negative response) are resent by a normal SR system. If ACK (affirmative response) of block D3 is not found up to time t1, block D3 is transmitted continuously from time t1 when NACK is received for the second to time t2 when ACK is received, and at the point in time when NACK of block D10 is received, block D10 is resent. After ACK of block D3 is received, new data blocks, such as blocks D14 and D15, are transmitted successively. At a reception side, only the block regarded as ACK for the first among many resent data blocks D3 is inputted to a buffer memory and up to the point in time, none of data blocks D4-D13 having already been inputted is outputted.
JP2713780A 1980-03-04 1980-03-04 Automatic resending system of data transmission Granted JPS56123150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2713780A JPS56123150A (en) 1980-03-04 1980-03-04 Automatic resending system of data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2713780A JPS56123150A (en) 1980-03-04 1980-03-04 Automatic resending system of data transmission

Publications (2)

Publication Number Publication Date
JPS56123150A true JPS56123150A (en) 1981-09-28
JPS637495B2 JPS637495B2 (en) 1988-02-17

Family

ID=12212656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2713780A Granted JPS56123150A (en) 1980-03-04 1980-03-04 Automatic resending system of data transmission

Country Status (1)

Country Link
JP (1) JPS56123150A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7995517B2 (en) 2004-03-24 2011-08-09 Lg Electronics Inc. System and method for transmitting units of messages in a mobile communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7995517B2 (en) 2004-03-24 2011-08-09 Lg Electronics Inc. System and method for transmitting units of messages in a mobile communication system

Also Published As

Publication number Publication date
JPS637495B2 (en) 1988-02-17

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