Abstract
A technique for compressing header information (43) to produce a compressed header portion (46) of a data packet to be transmitted across a communication channel includes generating a checksum (51) from the header information (43) and providing the checksum (51) as the compressed header portion (52).
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 2G | 15/12/2005 | ISLD-200602-001 | ERICSSON INC | Yes | Family Member | ||||
| Not Available | 15/12/2005 | ISLD-200602-001 | ERICSSON INC | Yes | Family Member | ||||
| 4G | 21/04/2009 | ISLD-200905-001 | ERICSSON INC | Yes | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
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| All Pending Patents In Patent Family : | ---- |
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| US6754231B1 | 4G | 21/04/2009 | ISLD-200905-001 | ERICSSON INC | Yes | Basis Patent | ||||
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| CN1163046C | 2G | 15/12/2005 | ISLD-200602-001 | ERICSSON INC | No | Family Member | ||||
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| CN1163046C | 4G | 21/04/2009 | ISLD-200905-001 | ERICSSON INC | No | Family Member | ||||
| CN1355983A | 2G | 15/12/2005 | ISLD-200602-001 | ERICSSON INC | No | Family Member | ||||
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| CN1355983A | 4G | 21/04/2009 | ISLD-200905-001 | ERICSSON INC | No | Family Member | ||||
| DE60028399T2 | 2G | 15/12/2005 | ISLD-200602-001 | ERICSSON INC | No | Family Member | ||||
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| DE60028399T2 | 4G | 21/04/2009 | ISLD-200905-001 | ERICSSON INC | No | Family Member | ||||
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| USRE44233E | 4G | 21/04/2009 | ISLD-200905-001 | ERICSSON INC | No | Family Member | ||||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Protocol Stack
Product
Use Cases
Wireless communication
Services
Claim
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: 5 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 10 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. 15
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 20 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; WO 00/79763 PCT/SEOO/01269 -13 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 5 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 10 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 15 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. 2011. 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 25 stamp value. WO 00/79763 PCT/SEOO/01269 -1414. 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; 5 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 10 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 15 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 20 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 25 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 WO 00/79763 PCT/SEOO/01269 -15 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 5 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. 10
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 15 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.']
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.