Patent 10103845

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 10103845, I will examine the patent citations listed in the provided patent document. The USPTO provides a Patent Public Search tool for this purpose.

Based on the patent document for US10103845, here are the patent citations listed as "Cited by examiner" and their potential relevance:

Patent Citations and Potential Anticipation:

  • US5933421A

    • Full Citation: US5933421A - Method for frequency division duplex communications
    • Publication Date: August 3, 1999 (Filed: February 6, 1997)
    • Brief Description: This patent describes a method for frequency division duplex (FDD) communications, which involves transmitting and receiving on different frequency bands simultaneously.
    • Potential Anticipation: This patent might anticipate aspects of the "second mode" described in claims 1 and 7 (and their dependent claims 11 and 18) of US10103845, particularly concerning the use of distinct, non-overlapping frequency spectra for different transmission/reception paths, as it details frequency division duplexing.

  • US6127971A

    • Full Citation: US6127971A - Combined array processing and space-time coding
    • Publication Date: October 3, 2000 (Filed: July 16, 1997)
    • Brief Description: This patent describes combining array processing with space-time coding for wireless communication, often to improve performance in multipath environments.
    • Potential Anticipation: This patent could be relevant to the "first mode" of spatial multiplexing in claims 1 and 7 (and their dependent claims 11 and 18) by describing techniques for utilizing multiple antennas and spatial processing, which are foundational to spatial multiplexing.

  • US6185258B1

    • Full Citation: US6185258B1 - Transmitter diversity technique for wireless communications
    • Publication Date: February 6, 2001 (Filed: September 16, 1997)
    • Brief Description: This patent focuses on transmitter diversity techniques to improve the reliability of wireless communications, often involving sending redundant signals from multiple antennas.
    • Potential Anticipation: Similar to US6127971A, this patent is relevant to the "first mode" of spatial multiplexing in claims 1 and 7, particularly the use of multiple transmit antennas to improve communication robustness.

  • US6298092B1

    • Full Citation: US6298092B1 - Methods of controlling communication parameters of wireless systems
    • Publication Date: October 2, 2001 (Filed: December 15, 1999)
    • Brief Description: This patent describes methods for controlling various communication parameters in wireless systems, which could include aspects of mode selection or resource allocation.
    • Potential Anticipation: This could potentially anticipate claims 2, 3, 15, and 16 of US10103845, which relate to switching between modes based on operating conditions, as controlling communication parameters might involve such mode adaptation.

  • US20020067759A1

    • Full Citation: US20020067759A1 - Efficient implementation of space division/multiple access for a synchronous CDMA communication system
    • Publication Date: June 6, 2002 (Filed: October 27, 2000)
    • Brief Description: This application describes an efficient implementation of space division multiple access (SDMA) in a synchronous CDMA system, allowing multiple users to share the same frequency band by using spatial separation.
    • Potential Anticipation: This is highly relevant to the "first mode" (spatial multiplexing) described in claims 1 and 7, as it directly addresses methods for spatial separation and multiplexing using multiple antennas over a shared frequency spectrum.

  • US6473393B1

    • Full Citation: US6473393B1 - Channel estimation for OFDM systems with transmitter diversity
    • Publication Date: October 29, 2002 (Filed: December 18, 1998)
    • Brief Description: This patent details techniques for channel estimation in OFDM systems that employ transmitter diversity.
    • Potential Anticipation: This patent might be relevant to the underlying OFDM technology and the use of diversity in the "first mode" of US10103845, especially where OFDM is implicitly or explicitly used with spatial multiplexing.

  • US20020158801A1

    • Full Citation: US20020158801A1 - Wireless packet switched communication systems and networks using adaptively steered antenna arrays
    • Publication Date: October 31, 2002 (Filed: April 27, 2001)
    • Brief Description: This application describes wireless communication systems that use adaptively steered antenna arrays, which can be used for spatial multiplexing and improving signal quality.
    • Potential Anticipation: This could anticipate the spatial multiplexing aspects of claims 1 and 7 due to its focus on adaptively steered antenna arrays for multiple-antenna communication.

  • US20030003863A1

    • Full Citation: US20030003863A1 - Link adaptation for MIMO transmission schemes
    • Publication Date: January 2, 2003 (Filed: May 4, 2001)
    • Brief Description: This application describes methods for link adaptation in MIMO transmission schemes, where communication parameters are adjusted based on channel conditions.
    • Potential Anticipation: This is highly relevant to the "first mode" (spatial multiplexing) and potentially to the switching between modes in claims 1, 2, 3, 7, 15, and 16. Link adaptation often involves selecting different transmission modes based on channel conditions (e.g., SNR, interference).

  • US20030235147A1 (also cited as US7095709B2)

    • Full Citation: US20030235147A1 - Diversity transmission modes for MIMO OFDM communication systems
    • Publication Date: December 25, 2003 (Filed: June 24, 2002)
    • Brief Description: This application describes various diversity transmission modes for MIMO OFDM communication systems.
    • Potential Anticipation: This is highly relevant to both modes described in US10103845. It explicitly mentions "diversity transmission modes" for MIMO OFDM, suggesting it covers concepts related to both spatial multiplexing (first mode) and potentially different frequency allocations or diversity techniques that could lead to bandwidth expansion (second mode).

  • US20040047426A1

    • Full Citation: US20040047426A1 - Multi input multi output wireless communication method and apparatus providing extended range and extended rate across imperfectly estimated channels
    • Publication Date: March 11, 2004 (Filed: September 9, 2002)
    • Brief Description: This application describes MIMO wireless communication methods and apparatus designed to provide extended range and data rates, even with imperfect channel estimations.
    • Potential Anticipation: This broadly anticipates the goals of US10103845 (increasing data rates) and the "first mode" of spatial multiplexing (claims 1, 7, 11, 18), as MIMO communication inherently uses multiple inputs/outputs to achieve these benefits.

  • US20040136349A1

    • Full Citation: US20040136349A1 - MIMO system with multiple spatial multiplexing modes
    • Publication Date: July 15, 2004 (Filed: October 25, 2002)
    • Brief Description: This application describes a MIMO system that can operate in multiple spatial multiplexing modes.
    • Potential Anticipation: This is directly relevant to the "first mode" of spatial multiplexing in claims 1, 7, 11, and 18, and could also potentially anticipate the concept of having multiple modes of operation as described in claims 2, 3, 15, and 16, even if the second mode involves bandwidth expansion rather than solely spatial multiplexing.

  • US20040218683A1

    • Full Citation: US20040218683A1 - Multi-mode wireless devices having reduced-mode receivers
    • Publication Date: November 4, 2004 (Filed: May 1, 2003)
    • Brief Description: This application describes multi-mode wireless devices with receivers capable of operating in a reduced number of modes.
    • Potential Anticipation: This could anticipate the concept of a transceiver operating in "a plurality of modes" as defined in claims 1 and 7, and the related switching mechanisms of claims 2, 3, 15, and 16.

  • US20040252667A1

    • Full Citation: US20040252667A1 - Receivers for receiving multi-carrier orthogonally coded signals
    • Publication Date: December 16, 2004 (Filed: July 22, 1997)
    • Brief Description: This patent describes receivers designed to handle multi-carrier, orthogonally coded signals.
    • Potential Anticipation: This is relevant to the underlying OFDM technology (which uses orthogonal subcarriers) mentioned in the detailed description of US10103845, and could potentially anticipate aspects of how the receiver processes signals in both modes, especially if OFDM is employed.

  • US20050047515A1

    • Full Citation: US20050047515A1 - Frequency-independent spatial processing for wideband MISO and MIMO systems
    • Publication Date: March 3, 2005 (Filed: August 27, 2003)
    • Brief Description: This application describes spatial processing techniques for wideband MISO (Multiple-Input Single-Output) and MIMO systems that are designed to be frequency-independent.
    • Potential Anticipation: This is relevant to the spatial multiplexing aspects of claims 1 and 7, as it deals with spatial processing in MIMO systems. While US10103845 introduces frequency-dependent aspects in its second mode, the foundational spatial processing could be anticipated here.

  • US20050063378A1

    • Full Citation: US20050063378A1 - Incremental redundancy transmission for multiple parallel channels in a MIMO communication system
    • Publication Date: March 24, 2005 (Filed: September 9, 2003)
    • Brief Description: This application describes using incremental redundancy transmission across multiple parallel channels in a MIMO system.
    • Potential Anticipation: This is relevant to the "first mode" (spatial multiplexing) of US10103845, as it describes a method for transmitting data over multiple parallel channels in a MIMO system to improve efficiency and reliability.

  • US6889355B1

    • Full Citation: US6889355B1 - Method and apparatus for data transmission using multiple transmit antennas
    • Publication Date: May 3, 2005 (Filed: April 26, 1996)
    • Brief Description: This patent details a method and apparatus for data transmission using multiple transmit antennas.
    • Potential Anticipation: This directly anticipates the fundamental concept of using multiple transmit antennas for data transmission, which is a core component of spatial multiplexing in US10103845's first mode (claims 1, 11).

  • US20050113021A1

    • Full Citation: US20050113021A1 - Wireless communication system for media transmission, production, recording, reinforcement and monitoring in real-time
    • Publication Date: May 26, 2005 (Filed: November 25, 2003)
    • Brief Description: This application describes a wireless communication system for various media applications in real-time.
    • Potential Anticipation: This patent is more general in scope but might broadly cover scenarios where high data rates (which US10103845 aims to achieve) are desired for media transmission. Specific technical details of dual-mode operation might not be directly anticipated.

  • WO2005062514A2 (also cited as US20050129068A1 and US20050129068A1)

    • Full Citation: WO2005062514A2 - Method, apparatus and system of multiple-input-multiple-output wireless communication
    • Publication Date: July 7, 2005 (Priority: December 15, 2003)
    • Brief Description: This international application describes a general method, apparatus, and system for MIMO wireless communication.
    • Potential Anticipation: Similar to other general MIMO patents, this could anticipate the core concepts of spatial multiplexing (first mode) in claims 1, 7, 11, and 18.

  • US20050147079A1

    • Full Citation: US20050147079A1 - Systems and methods for implementing an open loop architecture in a wireless communication network
    • Publication Date: July 7, 2005 (Filed: December 6, 2001)
    • Brief Description: This application describes systems and methods for implementing an open-loop architecture in a wireless communication network.
    • Potential Anticipation: This is a more architectural patent. While it might touch upon various communication schemes, it is less likely to directly anticipate the specific dual-mode operation (spatial multiplexing vs. bandwidth expansion) defined in US10103845's independent claims.

  • US20050180360A1

    • Full Citation: US20050180360A1 - Preamble formats for MIMO wireless communications
    • Publication Date: August 18, 2005 (Filed: February 13, 2004)
    • Brief Description: This application describes preamble formats specifically designed for MIMO wireless communications, used for synchronization and channel estimation.
    • Potential Anticipation: This could be relevant to the implementation details of a MIMO system, which forms the basis for the first mode of US10103845. However, it's less likely to anticipate the dual-mode switching or the bandwidth expansion concept itself.

  • US20050207385A1

    • Full Citation: US20050207385A1 - Methods and apparatus for flexible spectrum allocation in communication systems
    • Publication Date: September 22, 2005 (Filed: March 19, 2004)
    • Brief Description: This application describes methods and apparatus for flexible spectrum allocation in communication systems.
    • Potential Anticipation: This patent is highly relevant to the "second mode" of US10103845 (bandwidth expansion) as it directly addresses flexible spectrum allocation, which could encompass using non-overlapping or non-adjacent frequency bands. It could potentially anticipate claims 1, 5, 7, 10, 11, 14, 18, and 21.

  • US20050237971A1

    • Full Citation: US20050237971A1 - Adaptive MIMO systems
    • Publication Date: October 27, 2005 (Filed: February 23, 2004)
    • Brief Description: This application describes adaptive MIMO systems, where the MIMO configuration or parameters are adjusted dynamically.
    • Potential Anticipation: Similar to other adaptive/multi-mode MIMO patents, this could anticipate the "first mode" (spatial multiplexing) and the concept of switching between modes (claims 2, 3, 15, 16) in US10103845.

  • US7061854B2

    • Full Citation: US7061854B2 - Efficient OFDM communications with interference immunity
    • Publication Date: June 13, 2006 (Filed: October 15, 2001)
    • Brief Description: This patent describes efficient OFDM communication methods with improved interference immunity.
    • Potential Anticipation: This is relevant to the underlying OFDM technology used in US10103845 and could anticipate general improvements in OFDM systems, which might be applicable to both modes.

  • US7349439B2

    • Full Citation: US7349439B2 - Ultra-wideband communication systems and methods
    • Publication Date: March 25, 2008 (Filed: December 6, 2001)
    • Brief Description: This patent describes ultra-wideband (UWB) communication systems and methods.
    • Potential Anticipation: While UWB involves a broad spectrum, the specific mechanism of combining spatial multiplexing with non-overlapping, distinct frequency bands as described in US10103845 might not be directly anticipated by this general UWB patent.

  • US20080084951A1

    • Full Citation: US20080084951A1 - Systems and methods for receiving multiple input, multiple output signals for test and analysis of multiple-input, multiple-output systems
    • Publication Date: April 10, 2008 (Filed: October 6, 2006)
    • Brief Description: This application describes systems and methods for receiving MIMO signals specifically for testing and analysis purposes.
    • Potential Anticipation: This is focused on testing rather than the communication method itself, so it's less likely to anticipate the core claims of US10103845.

  • US8289835B2

    • Full Citation: US8289835B2 - Dual mode communication systems and methods
    • Publication Date: October 16, 2012 (Filed: April 14, 2010)
    • Brief Description: This patent describes dual mode communication systems and methods, which is the same title and subject matter as US10103845. It is a continuation of an earlier application, which itself claims priority from Provisional Application 60/561,877 (2004-04-14).
    • Potential Anticipation: This patent is a direct family member (continuation) of US10103845 and shares the same priority date. Therefore, it is not prior art in the traditional sense for anticipation under 35 U.S.C. § 102 but is rather part of the same patent family. The earlier priority date of the provisional application (April 14, 2004) would be the key for prior art analysis against other references.

  • US20030156570A1

    • Full Citation: US20030156570A1 - Method for frequency division duplex communications
    • Publication Date: August 21, 2003 (Filed: February 6, 1997)
    • Brief Description: This application describes a method for frequency division duplex communications, similar to US5933421A.
    • Potential Anticipation: Similar to US5933421A, this patent might anticipate aspects of the "second mode" described in claims 1 and 7 (and their dependent claims 11 and 18) of US10103845, particularly concerning the use of distinct, non-overlapping frequency spectra for different transmission/reception paths, as it deals with frequency division duplexing.

It's important to note that the ultimate determination of anticipation would involve a detailed claim-by-claim analysis, comparing each element of the claims of US10103845 against the disclosures of these prior art documents. The "potential anticipation" here indicates areas of overlap or foundational concepts.

Generated 5/25/2026, 12:48:52 AM