Patent 7567622

Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

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Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

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To identify the most relevant prior art for US patent 7567622, I will examine the "Cited By" and "Citations" sections of the patent information provided, as well as information from Google Patents.

US patent 7567622 lists several patent citations. Below is an analysis of each, including its full citation, publication/filing date, a brief description, and which claims it potentially anticipates under 35 U.S.C. § 102.

Prior Art Cited in US7567622:

  1. EP0735701A2

    • Full Citation: EP0735701A2, "Switched antenna diversity transmission method and system using ARQ techniques"
    • Publication Date: 1996-10-02
    • Filing Date: 1995-03-31
    • Brief Description: This patent describes a switched antenna diversity transmission method and system that uses ARQ techniques. It focuses on improving data transmission reliability through diversity and retransmission.
    • Potential Anticipation (35 U.S.C. § 102): EP0735701A2 appears to broadly cover ARQ re-transmission methods with diversity. It could potentially anticipate the general concept of using ARQ with diversity transmissions as described in the preamble of claims 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19. However, it is unlikely to anticipate the specific "higher order modulation scheme wherein more than two data bits are mapped onto one data symbol" or the "first and second mapping" details with constellation rearrangement as claimed in US7567622.

  2. US20020114398A1

    • Full Citation: US20020114398A1, "Constellation-multiplexed transmitter and receiver"
    • Publication Date: 2002-08-22
    • Filing Date: 1998-10-30
    • Brief Description: This publication relates to a transmitter and receiver that use constellation multiplexing. This often involves transmitting multiple data streams by mapping them onto different dimensions or components of a signal constellation.
    • Potential Anticipation (35 U.S.C. § 102): This reference might be relevant to the concept of different mappings. If "constellation-multiplexed" can be interpreted as using different signal constellation patterns for different transmissions or diversity branches, it might potentially anticipate aspects of claims 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19 related to employing different mappings for higher-order modulation. However, the specific context of ARQ re-transmissions and explicit averaging of bit reliabilities through constellation rearrangement as detailed in US7567622 might differentiate it.

  3. US6356528B1

    • Full Citation: US6356528B1, "Interleaver and deinterleaver for use in a diversity transmission communication system"
    • Publication Date: 2002-03-12
    • Filing Date: 1999-04-15
    • Brief Description: This patent describes an interleaver and deinterleaver for use in a diversity transmission communication system. Interleaving is a technique used to improve the performance of error-correcting codes over channels with burst errors, by spreading the errors out over time.
    • Potential Anticipation (35 U.S.C. § 102): This patent explicitly mentions interleaving in a diversity transmission system. Since claim 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20 of US7567622 mention that properties of mappings are obtained by interleaving, this reference could potentially anticipate those specific aspects.

  4. US20020036980A1

    • Full Citation: US20020036980A1, "Interleaver and deinterleaver for use in a diversity transmission communication system"
    • Publication Date: 2002-03-28
    • Filing Date: 1999-04-15
    • Brief Description: Similar to US6356528B1, this publication describes an interleaver and deinterleaver in a diversity transmission communication system, aiming to improve error correction performance.
    • Potential Anticipation (35 U.S.C. § 102): Given its similarity to US6356528B1, this reference also potentially anticipates claims 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20 of US7567622, specifically where the mappings are obtained by interleaving bit positions.

  5. US6580705B1

    • Full Citation: US6580705B1, "Signal combining scheme for wireless transmission systems having multiple modulation schemes"
    • Publication Date: 2003-06-17
    • Filing Date: 1999-10-28
    • Brief Description: This patent details a signal combining scheme for wireless transmission systems that utilize multiple modulation schemes. It addresses how to effectively combine signals that have been modulated using different techniques.
    • Potential Anticipation (35 U.S.C. § 102): This reference explicitly mentions "multiple modulation schemes" and "signal combining" in wireless transmission systems. This could potentially anticipate aspects of claims 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19 related to using different mappings (interpreted as modulation schemes) and diversity combining. The key distinction for US7567622 would be the ARQ re-transmission context and the specific goal of bit-reliability averaging through constellation rearrangement.

  6. EP1172959A2

    • Full Citation: EP1172959A2, "Hybrid automatic repeat-request system and method"
    • Publication Date: 2002-01-16
    • Filing Date: 2000-07-11
    • Brief Description: This patent describes a hybrid automatic repeat-request (HARQ) system and method. HARQ schemes combine ARQ with forward error correction (FEC) to improve reliability and throughput.
    • Potential Anticipation (35 U.S.C. § 102): This patent directly addresses HARQ systems. The preamble of US7567622's claims refers to an "ARQ re-transmission method." While EP1172959A2 describes a HARQ system, it does not explicitly detail the use of different signal constellation patterns for diversity branches or re-transmissions to average bit reliabilities, which is central to US7567622. Therefore, it might anticipate the general HARQ framework but not the specific constellation rearrangement aspects.

  7. CN1333605A

    • Full Citation: CN1333605A, "Communication system and method of transmitting signals therein"
    • Publication Date: 2002-01-30
    • Filing Date: 2000-07-11
    • Brief Description: This Chinese patent application describes a communication system and method for transmitting signals. Without further details on the specific techniques, it's hard to ascertain its precise relevance.
    • Potential Anticipation (35 U.S.C. § 102): A general description of a communication system and method is unlikely to anticipate the specific constellation rearrangement and bit reliability averaging features of US7567622 without more detailed information.

  8. US6476734B2

    • Full Citation: US6476734B2, "Method and apparatus for prioritizing information protection in high order modulation symbol mapping"
    • Publication Date: 2002-11-05
    • Filing Date: 2000-09-14
    • Brief Description: This patent focuses on prioritizing information protection within high-order modulation symbol mapping. This implies that some bits within a symbol are given higher protection than others, which could involve non-uniform bit reliability.
    • Potential Anticipation (35 U.S.C. § 102): This reference addresses "high order modulation symbol mapping" and "prioritizing information protection," suggesting an awareness of varying bit reliabilities in higher-order modulation. While it identifies the problem of differing bit reliabilities, it doesn't appear to explicitly disclose the solution of using different constellation mappings across diversity branches/retransmissions to average bit reliabilities as claimed in US7567622. It might anticipate the recognition of the problem statement.

  9. WO2002067491A1

    • Full Citation: WO2002067491A1, "Hybrid arq method with single constellation rearrangement"
    • Publication Date: 2002-08-29
    • Filing Date: 2001-02-21
    • Brief Description: This international publication describes a hybrid ARQ method that utilizes "single constellation rearrangement." The abstract of US7567622 itself mentions that "In WO-02/067491 A1 a method for hybrid ARQ transmissions has been disclosed which averages the bit reliabilities over successively requested retransmissions by means of signal constellation rearrangement."
    • Potential Anticipation (35 U.S.C. § 102): This is a highly relevant prior art reference, as acknowledged within US7567622. It explicitly discloses an HARQ method with signal constellation rearrangement for averaging bit reliabilities over successive retransmissions. This directly anticipates the core inventive concept of US7567622, particularly claims 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19 concerning ARQ re-transmission, higher-order modulation, and different mappings to achieve bit reliability averaging. The distinction for US7567622 might lie in applying this to transmit diversity branches in addition to ARQ re-transmissions. The phrase "single constellation rearrangement" in the title of WO2002067491A1 versus the application of different mappings to "available distinguishable transmit diversity branches AND ARQ (re-) transmissions" in US7567622 could be a point of differentiation.

  10. US6892341B2

    • Full Citation: US6892341B2, "Data transmission apparatus using a constellation rearrangement"
    • Publication Date: 2005-05-10
    • Filing Date: 2001-02-21
    • Brief Description: This patent describes a data transmission apparatus that uses constellation rearrangement. Given its shared priority date and assignee with WO2002067491A1, it likely relates to similar concepts of modifying constellation mappings.
    • Potential Anticipation (35 U.S.C. § 102): Due to its common priority and subject matter, this patent is likely to have similar anticipatory potential as WO2002067491A1 regarding constellation rearrangement. It would be highly relevant to claims 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19.

  11. US20030048857A1

    • Full Citation: US20030048857A1, "Space-time transmit diversity"
    • Publication Date: 2003-03-13
    • Filing Date: 2001-05-01
    • Brief Description: This publication describes space-time transmit diversity, a technique used in wireless communication to improve reliability by transmitting signals from multiple antennas, often with coding across space and time.
    • Potential Anticipation (35 U.S.C. § 102): This reference addresses transmit diversity. While US7567622 also deals with transmit diversity, US20030048857A1 does not appear to explicitly disclose the use of different constellation mappings for diversity branches in conjunction with ARQ re-transmissions to average bit reliabilities. It might anticipate the use of multiple diversity branches (as per the preamble of US7567622's claims) but not the specific constellation rearrangement for bit reliability averaging.

  12. US20030039229A1

    • Full Citation: US20030039229A1, "Method and apparatus implementing retransmission in a communication system providing H-ARQ"
    • Publication Date: 2003-02-27
    • Filing Date: 2001-08-22
    • Brief Description: This publication describes a method and apparatus for implementing retransmission in a communication system using H-ARQ.
    • Potential Anticipation (35 U.S.C. § 102): Similar to EP1172959A2, this reference generally covers HARQ retransmissions. It would anticipate the HARQ aspect of US7567622's claims but likely not the specific constellation rearrangement for bit reliability averaging across diversity branches and retransmissions.

  13. US6769085B2

    • Full Citation: US6769085B2, "Method for modifying a bit sequence in an ARQ restransmission, receiver and transmitter therefor"
    • Publication Date: 2004-07-27
    • Filing Date: 2001-11-16
    • Brief Description: This patent describes a method for modifying a bit sequence in an ARQ retransmission, along with the corresponding receiver and transmitter. This could involve techniques to change the transmitted data to improve decoding, such as puncturing or re-encoding.
    • Potential Anticipation (35 U.S.C. § 102): This patent addresses modifying bit sequences during ARQ retransmissions. While this is related to improving retransmission performance, it doesn't explicitly disclose changing the constellation mapping to average bit reliabilities across diversity branches and retransmissions as claimed in US7567622. It might be relevant to the general concept of modifying data for retransmissions.

  14. US7298717B2

    • Full Citation: US7298717B2, "Method and apparatus for providing transmit diversity with adaptive basis"
    • Publication Date: 2007-11-20
    • Filing Date: 2002-02-15
    • Brief Description: This patent describes a method and apparatus for providing transmit diversity with an adaptive basis. Adaptive transmit diversity often involves dynamically adjusting transmission parameters based on channel conditions.
    • Potential Anticipation (35 U.S.C. § 102): This reference explicitly deals with "transmit diversity." While US7567622 combines transmit diversity with ARQ and constellation rearrangement, US7298717B2 does not appear to explicitly disclose the use of different constellation mappings for diversity branches in conjunction with ARQ re-transmissions to average bit reliabilities. It would anticipate the transmit diversity aspect, but likely not the specific solution of US7567622.

  15. US7154961B2

    • Full Citation: US7154961B2, "Constellation rearrangement for ARQ transmit diversity schemes"
    • Publication Date: 2006-12-26
    • Filing Date: 2002-10-18
    • Brief Description: This patent shares the same title, priority date, and inventors with US7567622, and is noted as a continuation of application Ser. No. 10/501,906, which is the parent of US7567622. It clearly describes constellation rearrangement for ARQ transmit diversity schemes.
    • Potential Anticipation (35 U.S.C. § 102): As the parent patent, US7154961B2 almost certainly anticipates all claims of US7567622 under 35 U.S.C. § 102, as it covers the same subject matter with an earlier filing date. The relationship between these two patents (continuation) means that US7567622 is a divisional or continuation of US7154961B2, and therefore, US7154961B2 represents prior art for US7567622. This is the most relevant prior art.

Summary of Most Relevant Prior Art:

The most relevant prior art for US patent 7567622 is US7154961B2. This is a parent patent that shares the same title, priority date, and inventors, and directly describes the core invention of "Constellation rearrangement for ARQ transmit diversity schemes." As such, it would anticipate all claims of US7567622.

Additionally, WO2002067491A1 and US6892341B2 are highly relevant as they explicitly disclose HARQ methods with constellation rearrangement for averaging bit reliabilities. Their relevance to the core concept of constellation rearrangement for improving bit reliability in retransmissions makes them strong candidates for anticipating the claims of US7567622, particularly those related to using different mappings in the context of ARQ re-transmissions. The main distinguishing factor for US7567622 would be its explicit application to transmit diversity branches in combination with ARQ re-transmissions.

The references pertaining to interleaving (US6356528B1, US20020036980A1) are directly relevant to claims 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20, which specify that the mapping properties can be obtained through interleaving.

Generated 5/31/2026, 6:49:19 PM