Prior art

To identify the most relevant prior art for US patent 8923754, I will analyze the patent citations listed within the patent itself. The patent document provides a "Prior Art Keywords" section and a "Description" section that discusses background information and references other patents and publications. I will focus on the cited patents and patent applications as the primary source of prior art.

Here's an analysis of the most relevant prior art cited within US8923754:

1. U.S. Pat. No. 6,505,032 (McCorkle et. al. of Xtreme Spectrum, Inc.)

• Full Citation: U.S. Pat. No. 6,505,032
• Publication/Filing Date: The patent application 20030096578, associated with this patent, was published on May 22, 2003. The patent itself (U.S. Pat. No. 6,505,032) is explicitly incorporated by reference. The priority date for US8923754 is August 22, 2003.
• Brief Description: This patent (and its related application) pertains to Ultrawideband (UWB) technologies, which are foundational to the subject matter of US8923754. The cited patent likely describes fundamental UWB transmission techniques and systems.
• Potential Anticipation (35 U.S.C. § 102): This reference establishes the state of the art concerning UWB communication itself, including its high data rates and potential for personal area networks. It would likely anticipate any broad claims in US8923754 that merely describe the use of UWB for high-speed data transmission or forming piconets, without the additional "intelligent" repeater functionalities (e.g., filtering, prioritization, security, wired/wireless integration) claimed in US8923754. For instance, any claim simply stating a UWB transceiver is used in a network might be anticipated if 6,505,032 teaches general UWB networking.

2. US patent application 20030096578 (McCorkle, et. al. of Xtreme Spectrum, Inc.)

• Full Citation: US patent application 20030096578
• Publication/Filing Date: Published May 22, 2003.
• Brief Description: Similar to U.S. Pat. No. 6,505,032, this patent application further details ultrawideband technologies. It is explicitly incorporated by reference in US8923754, indicating its direct relevance to the understanding of UWB.
• Potential Anticipation (35 U.S.C. § 102): As a publication predating the priority date of US8923754, it serves as prior art for UWB communication principles. It would likely anticipate claims that generally describe UWB system components or basic UWB network configurations, if those aspects are not combined with the novel "intelligent" repeater features of US8923754.

3. "Recent Applications of Ultra Wideband Radar and Communications Systems" by Robert Fontana of Multispectral Solutions, Inc.

• Full Citation: "Recent Applications of Ultra Wideband Radar and Communications Systems", by Robert Fontana of Multispectral Solutions, Inc.
• Publication/Filing Date: The patent does not explicitly provide a publication date for this paper, but it is cited in the context of "Ultrawideband technologies are about to become mainstream," implying it predates the filing of US8923754.
• Brief Description: This publication likely provides an overview of UWB's capabilities and emerging applications, especially concerning radar and communication systems.
• Potential Anticipation (35 U.S.C. § 102): This would be relevant for establishing the general knowledge and foreseen applications of UWB technology at the time of US8923754's invention. If it discusses the need for range extension in UWB networks, it could potentially anticipate claims in US8923754 related to merely extending UWB range without the specific "intelligent" processing and filtering capabilities.

4. IEEE 802.15.3 MAC operation (Standards body activities)

• Full Citation: Not a single patent or publication, but refers to the IEEE 802.15.3 standards bodies' activities.
• Publication/Filing Date: The patent states that "The IEEE 802.15.3 standards bodies have been developing Physical (PHY) and MAC layer standards for dynamic channel selection and repeater service for UWB," and "the IEEE 802.15.3 MAC operation provides for repeater service request and repeater service grant commands." This indicates ongoing work and published specifications related to UWB repeater functionality prior to US8923754.
• Brief Description: The IEEE 802.15.3 standard details MAC layer operations that include provisions for "repeater service." The patent explicitly notes that "the current repeater operation contemplated by 802.15.3 and proposed UWB devices is based on the assumption that a single chip can perform necessary repeater functions."
• Potential Anticipation (35 U.S.C. § 102): This directly anticipates the concept of UWB repeater service. Claims in US8923754 that broadly cover a UWB repeater providing range extension without specifying the intelligent data processing, filtering, or security aspects might be anticipated by the IEEE 802.15.3 standards. The patent argues that its invention offers "advantages, flexibility, and improved performance and security than the currently proposed IEEE 802.15.3 activities," indicating that the basic idea of a UWB repeater was known, but its specific "intelligent" features are what US8923754 claims as novel.

5. "Wireless Communications: Principles and Practice", 2/e, c. 2002 by Rappaport

• Full Citation: Rappaport, "Wireless Communications: Principles and Practice", 2/e, c. 2002.
• Publication/Filing Date: c. 2002.
• Brief Description: This is a general textbook on wireless communications, likely covering fundamental principles of wireless networks, including interference, propagation, and network architectures.
• Potential Anticipation (35 U.S.C. § 102): This reference would establish general knowledge in the field of wireless communications. It could potentially anticipate broad claims related to wireless network operation, interference mitigation, or basic repeater functions in a wireless context, but not specifically the UWB-specific "intelligent" repeater features.

6. US Patent Application 20020198977 (Dong-Ho Cho)

• Full Citation: US Patent Application 20020198977, Published Dec. 26, 2002, by Dong-Ho Cho.
• Publication/Filing Date: Published Dec. 26, 2002.
• Brief Description: This application is cited in the context of "future wireless networks that will allow devices in the home or office to remain connected to the outdoor wireless network through roaming systems and protocols." It likely describes roaming systems and protocols for wireless networks.
• Potential Anticipation (35 U.S.C. § 102): This reference could be relevant to claims in US8923754 that involve seamless connectivity between indoor and outdoor networks or advanced network management aspects related to roaming. However, it's less likely to directly anticipate the specific UWB-based intelligent repeater functionalities.

7. "Wireless Communications: Past Events and Future Perspectives", June 2002, IEEE Communications Magazine by Rappaport, et. al.

• Full Citation: Rappaport, et. al., "Wireless Communications: Past Events and Future Perspectives", June 2002, IEEE Communications Magazine.
• Publication/Filing Date: June 2002.
• Brief Description: This invited paper discusses the history and future outlook of wireless communications.
• Potential Anticipation (35 U.S.C. § 102): Similar to the textbook by Rappaport, this would establish general knowledge and trends in wireless communication. It might address the growing need for efficient data handling and network management in future wireless systems, but would not likely detail the specific UWB intelligent repeater solution.

8. Ultrawideband.ca Mesh Networking Explained

• Full Citation: "Ultrawideband.ca Mesh Networking Explained"
• Publication/Filing Date: Not explicitly provided, but discussed in the context of existing software that enables PCs to act as wireless repeater-cells, implying it predates US8923754.
• Brief Description: Describes software allowing PCs to act as wireless repeater-cells, specifically attempting to find internet gateways and, if none are found, serving as a repeater-cell. This operation is software-controlled and requires user installation.
• Potential Anticipation (35 U.S.C. § 102): This reference anticipates the concept of a device acting as a wireless repeater-cell, particularly in the context of mesh networking and internet gateway discovery. Claims in US8923754 related to a device acting as a wireless repeater or extending network range could be anticipated by this, especially if they do not include the specific hardware-based "intelligence" and filtering described in US8923754. The patent differentiates itself by stating its invention requires capabilities "to be embedded in network hardware, rather than provided on a CD for installation on PCs".

9. Buffalo Technology's bridge and repeater product for IEEE 802.11g wireless LAN WiFi standard

• Full Citation: Buffalo Technology announced a bridge and repeater product for IEEE 802.11g wireless LAN WiFi standard on Jun. 17, 2003 (See SmallNet Builder website page).
• Publication/Filing Date: June 17, 2003.
• Brief Description: This product provides bridge and repeater functionality for WiFi (IEEE 802.11g) networks, offering point-to-point or point-to-multi-point operation and security features like WPA, WEP, password protection, and MAC address association control. It uses a browser-based interface for configuration.
• Potential Anticipation (35 U.S.C. § 102): This is highly relevant as it describes an existing repeater product with security and configuration features for a wireless LAN standard. It could potentially anticipate claims in US8923754 that generally describe repeater functionality, security features (like MAC address filtering), or configuration interfaces, especially for wireless networks. The distinction for US8923754 lies in its application to Ultrawideband and its specific "intelligent" processing, filtering, and wired/wireless integration for UWB.

10. SMC Networks' SMC2671W 2.4 GHz 11 Mbps Wireless Ethernet Adapter

• Full Citation: SMC Networks introduced, on Jun. 6, 2003, its SMC2671W 2.4 GHz 11 Mbps Wireless Ethernet Adapter.
• Publication/Filing Date: June 6, 2003.
• Brief Description: This device serves as an interface between wired internet backbones and wireless LAN networks, offering wireless repeater capabilities for WLAN range extension. It supports Ad-Hoc and Infrastructure modes, WEP encryption, WPA, MAC Address filtering, and SSID Broadcast Disable, and is configured via web browser or Window-based software.
• Potential Anticipation (35 U.S.C. § 102): Similar to the Buffalo Technology product, this is significant prior art for wireless LAN repeaters. It anticipates claims in US8923754 related to WLAN range extension, wired-to-wireless bridging, security features, and software-based configuration. The key differentiator for US8923754 would be its specific application to Ultrawideband and its advanced data processing, filtering, and traffic intelligence.

11. Andrew Corporation's PROPAGATOR PCS/Cellular repeaters

• Full Citation: Andrew Corporation makes classic PCS/Cellular repeaters, such as the fully integrated PROPAGATOR repeater shown on its webpage.
• Publication/Filing Date: Not explicitly provided, but described as "classic" and existing.
• Brief Description: These are classic PCS/Cellular repeaters that use standard AC power and integrate all signal processing components into a single package.
• Potential Anticipation (35 U.S.C. § 102): This reference establishes the broad concept of a repeater for cellular/PCS signals. It could anticipate very general claims regarding a self-contained repeater device with signal processing, but not the specific UWB technology or the "intelligent" data handling features of US8923754.

12. Qualcomm's CDMA repeater technology

• Full Citation: Qualcomm has recently developed repeater technology for CDMA.
• Publication/Filing Date: Not explicitly provided, but described as "recently developed."
• Brief Description: This indicates the development of repeater technology specifically for CDMA wireless systems.
• Potential Anticipation (35 U.S.C. § 102): This broad statement suggests that repeater technology for different wireless standards (like CDMA) existed. Similar to the Andrew Corporation reference, it would anticipate general repeater concepts but not the unique UWB or intelligent processing features of US8923754.