CA2375830A1 - Robust header compression in packet communications - Google Patents

Robust header compression in packet communications Download PDF

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Publication number
CA2375830A1
CA2375830A1 CA002375830A CA2375830A CA2375830A1 CA 2375830 A1 CA2375830 A1 CA 2375830A1 CA 002375830 A CA002375830 A CA 002375830A CA 2375830 A CA2375830 A CA 2375830A CA 2375830 A1 CA2375830 A1 CA 2375830A1
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Canada
Prior art keywords
checksum
header
header information
received
information
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
CA002375830A
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French (fr)
Other versions
CA2375830C (en
Inventor
Krister Svanbro
Lars-Erik Jonsson
Mikael Degermark
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Telefonaktiebolaget LM Ericsson AB
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Individual
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Filing date
Publication date
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Publication of CA2375830A1 publication Critical patent/CA2375830A1/en
Application granted granted Critical
Publication of CA2375830C publication Critical patent/CA2375830C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Abstract

A technique for compressing header information (43) to produce a compressed header portion (46) of a data packet to be transmitted across a communicatio n channel includes generating a checksum (51) from the header information (43) , and providing the checksum (51) as the compressed header portion (52).</SDOA B>

Claims (22)

1. A method of compressing header information to produce a compressed header portion of a data packet to be transmitted across a communication channel, comprising:
generating a checksum from the header information; and providing the checksum as the compressed header portion.
2. The method of Claim 1, including deriving from the header information additional information for use in reconstructing the header information at a receiving end of the communication channel, and providing the additional information in the compressed header portion along with the checksum.
3. The method of Claim 2, wherein the header information includes a header value represented by a plurality of bits, and wherein said step of deriving additional information from the header information includes selecting a desired number of least significant bits from said plurality of bits.
4. The method of Claim 1, wherein said generating step includes generating a Cyclic Redundancy Code (CRC) checksum.
5. The method of Claim 1, wherein the communication channel includes a wireless communication link.
6. The method of Claim 1, wherein the header information includes a time stamp value.
7. A method of decompressing a compressed header portion of a data packet received from a communication channel in order to produce desired header information, comprising:
guessing the desired header information;

obtaining from the compressed header portion a received version of a checksum that was generated from the desired header information at a transmitting end of the communication channel; and using the received checksum version to determine whether the guess of the desired header information is correct.
8. The method of Claim 7, wherein the desired header information includes a header value, and wherein said guessing step includes using a corresponding header value of a packet that preceded the received packet, in combination with an expected relationship between the header value of the received packet and the corresponding header value of the preceding packet, to predict the header value of the received packet.
9. The method of Claim 7, wherein said guessing step includes obtaining from the compressed header portion a received version of compressed information derived from the desired header information at the transmitting end, and using the received version of the compressed information to guess the desired header information.
10. The method of Claim 7, including generating a checksum from the guess, said using step including comparing the generated checksum to the received checksum version.
11. The method of Claim 10, wherein said generating step includes generating a Cyclic Redundancy Code (CRC) checksum.
12. The method of Claim 7, wherein the communication channel includes a wireless communication link.
13. The method of Claim 7, wherein the header information includes a time stamp value.
14. An apparatus for compressing header information to produce a compressed header portion of a data packet to be transmitted across a communication channel, comprising:
an input for receiving the header information;
a checksum generator coupled to said input for generating a checksum from the header information; and an output coupled to said checksum generator for providing the checksum as said compressed header portion.
15. The apparatus of Claim 14, including a header compressing apparatus coupled to said input for deriving from said header additional information for use in reconstructing said header information at a receiving end of the communication channel, said header compressing apparatus coupled to said output for providing said additional information in said compressed header portion along with said checksum.
16. The apparatus of Claim 14, wherein said checksum generator is operable to generate a Cyclic Redundancy Code (CRC) checksum.
17. The apparatus of Claim 14, wherein said communication channel includes a wireless communication link.
18. An apparatus for decompressing a compressed header portion of a data packet received from a communication channel in order to produced desired header information, comprising:
an input for receiving the compressed header portion;
a reconstructor for providing a guess of the desired header information, said reconstructor having an output for outputting the guess;
a verifier coupled to said reconstructor output for receiving said guess and coupled to said input for receiving from said compressed header portion a received version of a checksum that was generated from the desired header information at a transmitting end of the communication channel, said verifier for using said received checksum version to determine if said guess is correct.
19. The apparatus of Claim 18, wherein said verifier includes a checksum generator coupled to said reconstructor output for receiving said guess and generating therefrom a checksum, and said verifier including a comparator coupled to said checksum generator for receiving said generated checksum and comparing said generated checksum to said received checksum version.
20. The apparatus of Claim 19, wherein said checksum generator is operable to generate a Cyclic Redundancy Code (CRC) checksum.
21. The apparatus of Claim 18, wherein said communication channel includes a wireless communication link.
22. The apparatus of Claim 18, including a received header information output, and a connection unit coupled between said reconstructor output and said received header information output, said connection unit having a control input coupled to an output of said verifier, said connection unit responsive to said verifier output for selectively coupling said reconstructor output to said received header information output.
CA002375830A 1999-06-18 2000-06-16 Robust header compression in packet communications Expired - Lifetime CA2375830C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/335,558 1999-06-18
US09/335,558 US6754231B1 (en) 1999-06-18 1999-06-18 Robust header compression in packet communications
PCT/SE2000/001269 WO2000079763A1 (en) 1999-06-18 2000-06-16 Robust header compression in packet communications

Publications (2)

Publication Number Publication Date
CA2375830A1 true CA2375830A1 (en) 2000-12-28
CA2375830C CA2375830C (en) 2009-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002375830A Expired - Lifetime CA2375830C (en) 1999-06-18 2000-06-16 Robust header compression in packet communications

Country Status (9)

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US (3) US6754231B1 (en)
EP (1) EP1222789B1 (en)
JP (1) JP4582565B2 (en)
CN (1) CN1163046C (en)
AR (1) AR025535A1 (en)
AU (1) AU764597B2 (en)
CA (1) CA2375830C (en)
DE (1) DE60028399T2 (en)
WO (1) WO2000079763A1 (en)

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Also Published As

Publication number Publication date
US7453907B2 (en) 2008-11-18
CN1355983A (en) 2002-06-26
WO2000079763A1 (en) 2000-12-28
AU5862000A (en) 2001-01-09
DE60028399T2 (en) 2007-05-16
EP1222789A1 (en) 2002-07-17
AU764597B2 (en) 2003-08-21
US20040202167A1 (en) 2004-10-14
JP4582565B2 (en) 2010-11-17
CN1163046C (en) 2004-08-18
DE60028399D1 (en) 2006-07-06
AR025535A1 (en) 2002-12-04
EP1222789B1 (en) 2006-05-31
JP2003502948A (en) 2003-01-21
US6754231B1 (en) 2004-06-22
USRE44233E1 (en) 2013-05-21
CA2375830C (en) 2009-12-15

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