JPS57145451A - Automatic retransmitting system of data - Google Patents

Automatic retransmitting system of data

Info

Publication number
JPS57145451A
JPS57145451A JP56029959A JP2995981A JPS57145451A JP S57145451 A JPS57145451 A JP S57145451A JP 56029959 A JP56029959 A JP 56029959A JP 2995981 A JP2995981 A JP 2995981A JP S57145451 A JPS57145451 A JP S57145451A
Authority
JP
Japan
Prior art keywords
buffer memory
data block
case
reply
transmitted
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
JP56029959A
Other languages
Japanese (ja)
Other versions
JPH0239141B2 (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 JP56029959A priority Critical patent/JPS57145451A/en
Publication of JPS57145451A publication Critical patent/JPS57145451A/en
Publication of JPH0239141B2 publication Critical patent/JPH0239141B2/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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1874—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
    • 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 the throughput properties approximate to an ideal form, by providing only a buffer memory of a small capacity in case the data block is continuously transmitted through a circuit having a long delay time of reply. CONSTITUTION:A buffer memory of the transmitter side has a limited length equivalent at least to the delay time of a reply. In case this buffer memory has an idle space, an NACK (negative reply) is transmitted to the data block that cannot be supplied to the buffer memory since it is not received in a correct way and in an SR (Selective Repeating) system. In case an error data block which is not the oldest is received in a correct way and can be supplied to the buffer memory, an affirmative retransmission request signal ACK is transmitted to request the retransmission of the oldest error data block. As a result, the throughput properties can be improved in case a receiving buffer memory of a small capacity is used.
JP56029959A 1981-03-04 1981-03-04 Automatic retransmitting system of data Granted JPS57145451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56029959A JPS57145451A (en) 1981-03-04 1981-03-04 Automatic retransmitting system of data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56029959A JPS57145451A (en) 1981-03-04 1981-03-04 Automatic retransmitting system of data

Publications (2)

Publication Number Publication Date
JPS57145451A true JPS57145451A (en) 1982-09-08
JPH0239141B2 JPH0239141B2 (en) 1990-09-04

Family

ID=12290509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56029959A Granted JPS57145451A (en) 1981-03-04 1981-03-04 Automatic retransmitting system of data

Country Status (1)

Country Link
JP (1) JPS57145451A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007536845A (en) * 2004-05-04 2007-12-13 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Improved incremental redundancy implemented in wireless communication networks
WO2010061482A1 (en) * 2008-11-28 2010-06-03 株式会社アドバンテスト Testing apparatus, serial transmission system, program, and recording medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3516929B2 (en) * 2001-04-11 2004-04-05 シャープ株式会社 Transmitting device, receiving device, and communication system including the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635550A (en) * 1979-08-31 1981-04-08 Fujitsu Ltd Automatic retransmission request system
JPS637495A (en) * 1986-05-22 1988-01-13 ユーティルックス　コーポレイション Continuous underground tunnel excavation method and device and steering gear for said excavator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635550A (en) * 1979-08-31 1981-04-08 Fujitsu Ltd Automatic retransmission request system
JPS637495A (en) * 1986-05-22 1988-01-13 ユーティルックス　コーポレイション Continuous underground tunnel excavation method and device and steering gear for said excavator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007536845A (en) * 2004-05-04 2007-12-13 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Improved incremental redundancy implemented in wireless communication networks
JP4854660B2 (en) * 2004-05-04 2012-01-18 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Improved incremental redundancy implemented in wireless communication networks
WO2010061482A1 (en) * 2008-11-28 2010-06-03 株式会社アドバンテスト Testing apparatus, serial transmission system, program, and recording medium

Also Published As

Publication number Publication date
JPH0239141B2 (en) 1990-09-04

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