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US6609224B1
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Replacement of transport-layer checksum in checksum-based header compression
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 2000-09-07
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Granted: 2003-08-19
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Expires: 2020-09-07
Abstract
Abstract A method and apparatus for replacing a transport layer header error detection code and a header compression algorithm error detection code with a one error detection code. The replacement error detection code covers both the transport layer header and the transport layer payload. Such an arrangement reduces the amount of as-is or uncompressed information transmitted, thereby reducing the required bandwidth. The replacement error detection code is subsequently used to verify the correctness of both the reconstructed header and the payload.
Inventors
- 👤 Lars-Erik Jonsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:30
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0061; H04L1/0041; H04L1/0078; H04L1/0083
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
A method for replacing a transport layer error detection code in a header compression algorithm, the method comprising the steps of: calculating one error detection code covering both a transport layer header and a transport layer payload; compressing said transport layer header in accordance with said header compression algorithm; including said error detection code with said compressed transport layer header; and transmitting said compressed transport layer header.
Claim 2
Independent Claim
67 words
A method for replacing a transport layer error detection code in a header compression algorithm, the method comprising the steps of: calculating one error detection code covering both a transport layer header and a transport layer payload; compressing said transport layer header in accordance with said header compression algorithm; including said error detection code with said compressed transport layer header; and transmitting said compressed transport layer header.
Claim 3
Dependent Claim
26 words
The method according to claim 1 , further comprising reconstructing said transport layer header and verifying said reconstructed transport layer header using said error detection code.
Claim 4
Dependent Claim
15 words
The method according to claim 1 , wherein said error detection code is a CRC.
Claim 5
Dependent Claim
19 words
The method according to claim 1 , wherein said error detection code has a size of about 2 octets.
Claim 6
Dependent Claim
16 words
The method according to claim 1 , wherein said transport layer is an IP-based transport layer.
Claim 7
Dependent Claim
33 words
The method according to claim 5 , wherein said IP-based transport layer includes a transport layer checksum in said transport layer header, and said error detection code is calculated to cover said checksum.
Claim 8
Independent Claim
64 words
A system for replacing a transport layer checksum in a header compression algorithm, said system comprising: an error detection code calculator for calculating one error detection code covering both a transport layer header and a transport layer payload; a header compressor for compressing said transport layer header in accordance with said header compression algorithm; and a transmitter for transmitting said compressed transport layer header.
Claim 9
Independent Claim
64 words
A system for replacing a transport layer checksum in a header compression algorithm, said system comprising: an error detection code calculator for calculating one error detection code covering both a transport layer header and a transport layer payload; a header compressor for compressing said transport layer header in accordance with said header compression algorithm; and a transmitter for transmitting said compressed transport layer header.
Claim 10
Dependent Claim
18 words
The system according to claim 7 , further comprising a header decompressor for reconstructing said transport layer header.
Claim 11
Dependent Claim
24 words
The system according to claim 7 , further comprising a verification processor for verifying said reconstructed transport layer header using said error detection code.
Claim 12
Dependent Claim
15 words
The system according to claim 7 , wherein said error detection code is a CRC.
Claim 13
Dependent Claim
19 words
The system according to claim 7 , wherein said error detection code has a size of about 2 octets.
Claim 14
Dependent Claim
16 words
The system according to claim 7 , wherein said transport layer is an IP-based transport layer.
Claim 15
Dependent Claim
33 words
The system according to claim 12 , wherein said IP-based transport layer includes a transport layer checksum in said transport layer header, and said error detection code is calculated to cover said checksum.
References Cited (Backward Citations)
US5627829A
Cited
US5850526A
Cited
US5987022A
Cited
US5935268A
Cited
US6208651B1
Cited
US6477669B1
Cited
US6032197A
Cited
US6438137B1
Cited
WO2000011849A1
Cited
US6314095B1
Cited
WO2000069139A2
Cited
US6198735B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-08-18 | 2007-02-17 | 2007-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-08-18 | 2011-02-17 | 2011-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-08-18 | 2015-02-17 | 2015-08-19 | $7700.00 | Window Closed / Lapsed |