CA2065578A1 - Packet-based data compression method - Google Patents

Packet-based data compression method

Info

Publication number
CA2065578A1
CA2065578A1 CA2065578A CA2065578A CA2065578A1 CA 2065578 A1 CA2065578 A1 CA 2065578A1 CA 2065578 A CA2065578 A CA 2065578A CA 2065578 A CA2065578 A CA 2065578A CA 2065578 A1 CA2065578 A1 CA 2065578A1
Authority
CA
Canada
Prior art keywords
packet
static
information
data
fields
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
CA2065578A
Other languages
French (fr)
Other versions
CA2065578C (en
Inventor
David W. Carr
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.)
Mitel Networks Corp
Original Assignee
David W. Carr
Gandalf Technologies Inc.
Mitel Corporation
Zarlink Semiconductor Inc.
Mitel Networks Corporation
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 David W. Carr, Gandalf Technologies Inc., Mitel Corporation, Zarlink Semiconductor Inc., Mitel Networks Corporation filed Critical David W. Carr
Publication of CA2065578A1 publication Critical patent/CA2065578A1/en
Application granted granted Critical
Publication of CA2065578C publication Critical patent/CA2065578C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3084—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method
    • H03M7/3088—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method employing the use of a dictionary, e.g. LZ78
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

A data processing system is described that employs data packets which include at least static and dynamic fields, the static fields containing information that often remains constant during a multi-packet communication interval and the dynamic fields containing information that changes for each packet.
Many packets also include a user-data fields. A
compression method is described which comprises:
reformatting each data packet by associating its static fields with a first packet region and its dynamic fields with a second packet region. The process then assembles a static table that includes static information from at least an initial data packet's first packet region. It then identifies static field information in a subsequent data packet's first packet region that is common to the information in the static table. Such common information is encoded so as to reduce its data length. The common static information is then replaced in the modified data packet with the encoded common static information and the modified data packet is then transmitted. A
similar action occurs with respect to user-data information. A single dictionary table is created for all packet headers, while separate dictionary tables are created for each user-data portion of a packet-type experienced in the communication network thereby enabling better compression.
CA002065578A 1991-04-22 1992-04-08 Packet-based data compression method Expired - Lifetime CA2065578C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68935991A 1991-04-22 1991-04-22
US07/689,359 1991-04-22

Publications (2)

Publication Number Publication Date
CA2065578A1 true CA2065578A1 (en) 1992-10-23
CA2065578C CA2065578C (en) 1999-02-23

Family

ID=24768105

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002065578A Expired - Lifetime CA2065578C (en) 1991-04-22 1992-04-08 Packet-based data compression method

Country Status (2)

Country Link
US (1) US5293379A (en)
CA (1) CA2065578C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115065725A (en) * 2022-05-12 2022-09-16 北京奇艺世纪科技有限公司 Data processing method and device, electronic equipment and storage medium
CN115334169A (en) * 2022-04-28 2022-11-11 深圳证券通信有限公司 Communication protocol coding method for saving network bandwidth
CN116436987A (en) * 2023-06-12 2023-07-14 深圳舜昌自动化控制技术有限公司 IO-Link master station data message transmission processing method and system

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* Cited by examiner, † Cited by third party
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