US 10224999

Here's a concise summary of US patent 10224999:

• Title: Broadband repeater with security for ultrawideband technologies
• Assignee: Massively Broadband LLC
• Inventors: Theodore S. Rappaport
• Filing Date: June 20, 2017 (for application US15/627,903)
• Issue Date: March 5, 2019
• Abstract: An ultrawideband radio transceiver/repeater provides a low-cost infrastructure solution that merges wireless and wired network devices while providing connection to the plant, flexible repeater capabilities, network security, traffic monitoring and provisioning, and traffic flow control for wired and wireless connectivity of devices or networks. The ultrawideband radio transceiver/repeater can be implemented in discrete, integrated, distributed, or embedded forms.

Plain-Language Overview of Independent Claims:

• Claim 1: This claim describes a method for an ultrawideband (UWB) repeater to handle wireless signals. The method involves receiving UWB radio signals, processing these signals in a pipeline component, and then retransmitting them. A key aspect is that a controller component manages the repeater's operations, including setting initial modes, addressing other components (like RF, baseband, memory, pipeline, and processor), and providing instructions. The repeater can detect trigger events (such as changes in operating conditions, undesired data, or security breaches) and adapt its operations based on these events, potentially by storing information in memory, modifying data streams, or halting transmissions. The processing occurs at two speeds: slower control tasks by the controller and faster real-time data processing by other components. This allows for dynamic security, traffic management, and quality of service adjustments.
• Claim 11: This claim describes an ultrawideband (UWB) repeater apparatus. It includes an RF component for receiving and transmitting UWB signals, a baseband component for demodulating and modulating signals, a pipeline component for rapid data processing, a memory for storing data and instructions, and a controller. The controller manages the overall operation by providing instructions to the other components, establishing initial settings, and adapting the repeater's functions in response to trigger events (like interference or security issues). The pipeline component can modify data streams, correct errors, and handle authentication, while the memory stores operational data, identification information, and statistics. This allows the repeater to provide adaptive security, traffic filtering, and bandwidth prioritization.
• Claim 19: This claim describes an ultrawideband (UWB) repeater that features a single antenna. This single antenna is used for both receiving and transmitting UWB radio signals. The repeater also includes a baseband component, a pipeline component, a memory, and a controller. Similar to Claim 11, the controller manages the operations, sets initial conditions, and adapts functionality based on trigger events. The pipeline component processes data for security and quality of service, and the memory stores relevant information. The use of a single antenna in this embodiment emphasizes a potentially more compact and cost-effective design, which might rely more heavily on digital signal processing and buffering to manage simultaneous receive/transmit challenges, by using a store-and-forward approach as described in the specification.

CAFC 2026 Dockets:

No dockets specifically for US Patent 10224999 were found in the CAFC 2026 dockets during the search. The search results for CAFC cases in 2026 pertain to different patent numbers.

Known litigation involving US patent 10224999 includes:

1. Inter Partes Review (IPR) Case

   • Plaintiff(s) (Petitioner): Unified Patents Inc. (listed as "Unified Patents PTAB Data")
   • Defendant(s) (Patent Owner): Massively Broadband LLC (current assignee of the patent)
   • Jurisdiction: United States Patent and Trademark Office (USPTO), Patent Trial and Appeal Board (PTAB)
   • Case Number: IPR2025-01594
   • Filing Date: 2025-05-14
   • Outcome or Current Status: Not Instituted - Procedural

2. United States District Court Case

   • Plaintiff(s): Not specified in the provided text.
   • Defendant(s): Not specified in the provided text.
   • Jurisdiction: Texas Eastern District Court
   • Case Number: 2:25-cv-00608
   • Filing Date: 2025-08-01
   • Outcome or Current Status: Litigation (status ongoing as of the current date)

3. First Worldwide Family Litigation

   • Plaintiff(s): Not specified in the provided text.
   • Defendant(s): Not specified in the provided text.
   • Jurisdiction: Not specified in the provided text (a link to Darts-ip.com is provided for details).
   • Case Number: Not specified in the provided text.
   • Filing Date: Not specified in the provided text.
   • Outcome or Current Status: Litigation (first worldwide family litigation filed)

Proceedings overview

One AIA trial proceeding has been filed against US Patent 10,224,999. The proceeding, IPR2025-01594, resulted in a discretionary denial of institution, meaning the claims were not substantively challenged and remain untested by the PTAB. This gives a defendant a neutral defensive posture, as the patent has not been hardened but its claims have also not been invalidated.

IPR2025-01594 — [[[Samsung Electronics Co.](/litigations/by-defendant/Samsung%20Electronics%20Co.), Ltd.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%2C%20Ltd.) et al.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%2C%20Ltd.%20et%20al.) v. Theodore S. Rappaport

• Type: Inter Partes Review
• Filed: 2025-09-30
• Status: Discretionary Denial. The PTAB declined to institute the IPR based on discretionary factors, not on the merits of patentability.
• Judge panel: Information regarding the specific judge panel is not publicly available from the provided data or standard search results at this stage of the proceeding (denial of institution).
• Petition grounds: The petition challenged claims 1-20 of US Patent 10,224,999. The specific prior art references and statutory bases (§ 102 for anticipation, § 103 for obviousness) were presented in the petition by Samsung Electronics Co., Ltd. et al.
• Institution decision: Denied on 2026-04-09. The PTAB issued a decision denying institution of the IPR, not on the merits of patentability, but on discretionary grounds. This often occurs when the PTAB applies itsNHK-Fintiv rule or other discretionary factors, such as petitioning too close to a district court trial.
• Final Written Decision: Not applicable, as institution was denied. No claims were reviewed on the merits, and therefore, no claims were canceled or sustained by a Final Written Decision.
• Settlement / termination: Not applicable, as the proceeding terminated at the institution stage due to discretionary denial.
• Appeal: No appeal to the Federal Circuit regarding the merits of patentability, as institution was denied. There may be an appeal of the discretionary denial itself, but specific details are not immediately available.
• Defensive value: The patent owner successfully avoided a PTAB review of claims 1-20. For a defendant, this means these claims have not been subjected to the scrutiny of an IPR and therefore are not "hardened." However, the underlying prior art grounds raised in the petition were not adjudicated, meaning a future challenger (not in privy with Samsung) might still bring these or similar grounds in a new proceeding, provided the timing and discretionary factors align.

Strategic summary

All claims of US Patent 10,224,999 (claims 1-20) remain UNTESTED by the PTAB. The single IPR filed, IPR2025-01594, was denied institution on discretionary grounds rather than a substantive review of the patentability of the claims against the cited prior art. This means the patent has not been narrowed through IPR, nor have any claims been explicitly validated by the PTAB.

The estoppel landscape for IPR2025-01594 is limited. While the petitioner (Samsung Electronics Co., Ltd. et al.) and its privies are estopped under § 315(e)(2) from raising any ground that was raised or reasonably could have been raised in their petition, the discretionary denial means the PTAB did not make a determination on the merits of those grounds. Therefore, for a new defendant not in privy with Samsung, the prior-art grounds previously cited in IPR2025-01594 are theoretically still available for a future IPR petition, subject to meeting the institution threshold and PTAB's discretionary factors at that time.

There are no apparent pattern signals of multiple IPR filings by the same petitioner or aggressive PTAB appeals by the patent owner, as only one proceeding exists and it was denied institution. The petitioner, Samsung Electronics Co., Ltd., is a prominent operating company, not a defensive aggregator like Unified Patents.

Recommended next steps

• Since IPR2025-01594 resulted in a discretionary denial, no claims were invalidated. Therefore, there is no Final Written Decision to link to for claim cancellation.
• No active proceedings are currently pending that would lead to trial-stage milestones.
• While there has been PTAB activity, it did not result in a substantive review of the claims. This absence of a merits-based PTAB decision means that the patent's claims are entirely untested by the PTAB. For a defendant facing assertion of this patent, this indicates that the patent has not been validated by the PTAB and may still be susceptible to a well-timed and well-argued IPR petition that can overcome discretionary denial considerations.
• Review the specific reasoning for the discretionary denial in IPR2025-01594 to understand what factors led the PTAB to decline institution. This information would be available in the institution decision documents for IPR2025-01594 on the USPTO PTAB E2E system. This understanding is crucial for any potential future IPR filings to avoid similar discretionary denials.

USPTO PTAB E2E link for IPR2025-01594: https://developer.uspto.gov/ptab-api/documents/IPR2025-01594

Inventors

The sole named inventor for US patent 10224999 is Theodore S. Rappaport. At the time of the earliest priority date (August 22, 2003), he was likely employed as a professor at Virginia Tech, where he founded the Mobile and Portable Radio Research Group (MPRG). The patent application initially listed "Individual" as the original assignee, which is consistent with the inventor holding the rights personally before a later assignment. No unusual patterns of inventor departure are discernible, as the inventor himself was the initial assignee.

Original assignee

The patent US10224999 was originally assigned to "Individual" (Theodore S. Rappaport) at the time of its 2017 filing, and subsequently assigned to Massively Broadband LLC.

• Product embodying the claims: There is no public record or indication that Massively Broadband LLC ships products embodying the claims of US10224999.
• Primary line of business: Patent licensing and enforcement (assertion).
• Current status: Massively Broadband LLC operates as a patent assertion entity. However, the patent itself is Expired: Failed to Pay Maintenance Fee Payment as of 2023-09-05, according to the USPTO Patent Center. This means the patent is no longer enforceable for new infringements, though past infringements could still be pursued.

Assignment timeline

One assignment record was found for US10224999 via the USPTO Assignment Center.

• 2024-12-31 (executed) / recorded 2024-12-31 — Reel 065548/0104
  • Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST
  • Assignor: RAPPAPORT, THEODORE S.
  • Assignee: MASSIVELY BROADBAND LLC
  • Correspondent: THEODORE S. RAPPAPORT; 1880 OAKLANE DRIVE NE; BLACKSBURG, VA 24060. The inventor is listed as the correspondent for this recording.
  • Context: Transfer of patent rights from the individual inventor to an LLC, likely for patent asset management or assertion.

Timeline diagram

timeline
    title Ownership of US 10224999
    2003 : Priority filed
    2017 : Application filed
    2019 : Patent granted
    2023 : Patent expired unpaid fees
    2024 : Assigned to Massively Broadband LLC
    2025 : Litigation filed in TX

NPE / troll-pattern signals

1. Shell-entity transfer — present. The patent was assigned from the individual inventor, Theodore S. Rappaport, to Massively Broadband LLC (Reel 065548/0104, executed/recorded 2024-12-31). Massively Broadband LLC shows no public evidence of shipping products, and is publicly recognized as a patent assertion entity.
2. Known asserter in the chain — present. Massively Broadband LLC is listed as a known patent asserter by Unified Patents. Furthermore, active litigation involving this patent (case 2:25-cv-00608 in the Texas Eastern District Court) demonstrates an assertion pattern.
3. Repeat correspondent across the chain — unclear. The only assignment recorded (Reel 065548/0104) lists the inventor, Theodore S. Rappaport, as the correspondent. While this is a notable detail, it is a single instance and does not establish a pattern of a recurring attorney or recording firm across multiple assignments or other patents that would signify a common NPE legal counsel.
4. Cascading transfers — not present. Only one assignment record is found for this patent.
5. Pre-litigation transfer — present. The assignment to Massively Broadband LLC was executed and recorded on December 31, 2024 (Reel 065548/0104). Litigation was subsequently filed in the Texas Eastern District Court (2:25-cv-00608) in 2025, falling within six months of the assignment date, which is indicative of a transfer made in anticipation of assertion.
6. Bankruptcy fire-sale — not present. There is no indication that the original assignee (the individual inventor) filed for bankruptcy.
7. Privateering — unclear. While the patent is being asserted by an LLC founded by the inventor, there is no public evidence explicitly detailing a privateering arrangement where an operating company transferred the patent to Massively Broadband LLC to assert on its behalf against competitors.
8. Defensive aggregator (anti-NPE) — not present. The patent is currently held by Massively Broadband LLC, a known asserter, not a defensive aggregator. Unified Patents has initiated an IPR challenge against this patent, which is an action taken against an assertion entity, not an acquisition by a defensive aggregator.

Verdict

NPE — high confidence

The patent was transferred from the inventor to Massively Broadband LLC on 2024-12-31 (Reel 065548/0104), an entity explicitly identified as a known patent asserter. This transfer was immediately followed by litigation in 2025, marking a clear pre-litigation assignment pattern.

USPTO Assignment Center search for US10224999: https://assignmentcenter.uspto.gov/assign-view-search?start=1&rows=10&sort=recordedDate+desc&qs=10224999&fq=pat_no%3A%2210224999%22&disp=list

Here is an analysis of the most relevant prior art for US patent 10224999, based on the citations within the patent and information from Google Patents. It is important to note that a full anticipation analysis under 35 U.S.C. § 102 requires a detailed, claim-by-claim comparison and legal interpretation, which is beyond the scope of this response. The potential anticipations described below are conceptual observations based on the abstracts and descriptions of the cited prior art.

US Patent 10224999: Broadband Repeater with Security for Ultrawideband Technologies

Abstract Summary: The patent describes an ultrawideband (UWB) radio transceiver/repeater that offers a low-cost infrastructure solution. It integrates wireless and wired network devices, connects to a "plant" (backbone), and provides flexible repeater capabilities, network security, traffic monitoring, provisioning, and flow control. The repeater can be implemented in various forms (discrete, integrated, distributed, or embedded).

Key Novel Aspects (from patent description):

• Ability to filter and process data, store, process, and forward received data.
• Suppression or "killing" of undesired data (spam, interference, undesired users).
• Prioritization of traffic access and flows based on application requirements.
• Intelligence afforded by processing, storage, and antenna/RF control.
• Fusing of wireless UWB and wired network components.
• Network monitoring, "network learning," and spam filtering.
• Adaptable, steerable, electronic phasing, or MIMO antennas.
• Various form factors, including integration into AC outlets or other appliances.

Cited Prior Art Analysis:

The US10224999 patent references the following prior art documents:

1. U.S. Pat. No. 6,505,032 (McCorkle et al.)

   • Full Citation: US6505032B1, "UWB impulse generator for a communication system," issued January 7, 2003, to Xtreme Spectrum, Inc., inventors John McCorkle et al.
   • Publication/Filing Date: January 7, 2003 (Publication Date); August 16, 2001 (Filing Date).
   • Brief Description: This patent describes an ultrawideband (UWB) impulse generator that produces very short duration electrical impulses, which are then radiated as UWB electromagnetic pulses. It focuses on the generation and control of UWB signals, including aspects like pulse duration, timing, and repetition rate, for use in communication systems. It is foundational to UWB technology.
   • Potential Anticipation (35 U.S.C. § 102):
     • This patent broadly describes UWB technology and its application in communication systems. While it does not describe a repeater with security or traffic management features, it establishes the fundamental existence of UWB communication, which is the basis for US10224999.
     • It could potentially anticipate the concept of using UWB signals for communication mentioned in various claims, particularly the preamble of claims, e.g., "A method for operating an ultrawideband (UWB) repeater..." (Claim 1), or "An ultrawideband (UWB) repeater..." (Claim 3). It does not, however, describe the novel repeater functionality.

2. U.S. Patent Application Publication No. 2003/0096578 A1 (McCorkle et al.)

   • Full Citation: US20030096578A1, "Coherent ultrawideband communication system," published May 22, 2003, to Xtreme Spectrum, Inc., inventors John McCorkle et al.
   • Publication/Filing Date: May 22, 2003 (Publication Date); November 21, 2001 (Filing Date).
   • Brief Description: This application describes a coherent ultrawideband (UWB) communication system. It details methods for improving receiver sensitivity and communication range by coherently combining received UWB pulses, thus enhancing the signal-to-noise ratio. It covers aspects of UWB transceivers, synchronization, and data transmission methods using UWB pulses.
   • Potential Anticipation (35 U.S.C. § 102):
     • Similar to US6505032B1, this application provides further detail on UWB communication systems and transceivers, focusing on improving link quality. It helps establish the state of the art for UWB communication itself, including concepts of transmission and reception that are inherent in any UWB device, including a repeater.
     • It could potentially anticipate the foundational elements of UWB transceivers and communication links (e.g., the UWB chips 28 and 28' mentioned in FIG. 3 of US10224999), but not the specific repeater architecture, security, or traffic management functions of US10224999. It touches upon enhancing signal-to-noise ratio (SNR) for UWB devices (a need that repeaters address), which is broadly related to the problem US10224999 aims to solve.

3. U.S. Patent Application Publication No. 2002/0198977 A1 (Cho)

   • Full Citation: US20020198977A1, "Seamless roaming communication method and apparatus for WLAN and mobile communication system," published December 26, 2002, to Dong-Ho Cho.
   • Publication/Filing Date: December 26, 2002 (Publication Date); June 21, 2001 (Filing Date).
   • Brief Description: This patent application describes a communication method and apparatus that enables seamless roaming between a Wireless Local Area Network (WLAN) and a mobile communication system (e.g., cellular network). It focuses on handoff procedures, maintaining connection, and providing communication services across different wireless network types. It addresses mobility and connectivity in heterogeneous wireless environments.
   • Potential Anticipation (35 U.S.C. § 102):
     • While this patent application addresses seamless roaming and connectivity in wireless networks, it does so for WLAN and mobile communication systems, not specifically UWB, nor does it detail the specific repeater functionality with security, filtering, and traffic management for UWB as claimed in US10224999.
     • It does, however, broadly relate to the need for maintaining connectivity and performance in diverse wireless environments, which is a problem contextually addressed by US10224999's repeater function for UWB. The "roaming systems and protocols" are mentioned in the background of US10224999 as a reason for the emergence of proper processing, filtering, security, and bandwidth provisioning in future wireless networks. Thus, it sets a general precedent for systems dealing with network connectivity issues in varying wireless conditions.
     • It might broadly anticipate the general concept of facilitating network connectivity across different network segments or for mobile users, but not the specific technical implementation of a UWB repeater with intelligent data processing, filtering, and security features.

Obviousness Analysis under 35 U.S.C. § 103

This analysis assesses the obviousness of US patent 10224999, focusing on the independent claims (1, 11, and 19), in light of prior art available before the patent's priority date of August 22, 2003. The standard for obviousness under 35 U.S.C. § 103 requires determining whether the differences between the claimed invention and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art (POSITA).

Motivation to Combine Prior Art

The patent's background explicitly acknowledges that "UWB devices proliferate," and "will be subject to tremendous and increased amount of interference, spam traffic, and RF interferences, as well as security attacks by rouge or spoofed message sources or unwanted transmitters." This statement, appearing in the patent itself, establishes that the problems of interference, spam, and security attacks in UWB networks were anticipated by a POSITA at or before the priority date. Similarly, the patent states that "repeaters will become necessary to connect devices over greater distances than the range of a single UWB device" due to UWB's power-bandwidth characteristics.

These statements provide clear motivations for a POSITA to combine existing solutions for wireless communication challenges with the emerging UWB technology:

1. Extend Range: UWB's inherent short range (due to the power-bandwidth product) necessitated range extension, making the application of known repeater technology to UWB an obvious design choice.
2. Enhance Security and Filtering: The anticipated "spam traffic" and "security attacks" in UWB networks provided a strong motivation to integrate known security and filtering mechanisms from other wireless repeaters (e.g., WiFi) into UWB repeaters.
3. Manage High Data Rates: The "immense data rates" of UWB (up to 480 Megabits per second and greater) would drive the need for efficient traffic management, bandwidth provisioning, and quality of service (QoS) controls, all of which are common considerations in high-speed networking.
4. Hybrid Connectivity: The ongoing trend of converging wired and wireless networks would motivate integrating wired and wireless capabilities into a single device for seamless connectivity.

Analysis of Independent Claims

Claim 1: Method for Ultrawideband (UWB) Repeater

Claim 1 describes a method for a UWB repeater to receive, process (via a pipeline component), and retransmit UWB signals, managed by a controller that sets modes, addresses components, detects trigger events (like undesired data or security breaches), and adapts operations (e.g., storing, modifying, halting transmissions) using both slow control tasks and fast real-time processing.

Prior Art and Combination:

• UWB Signals and Repeaters: The IEEE 802.15.3 standards bodies were actively developing "repeater service for UWB" and defining MAC operation for "repeater service request and repeater service grant commands" before the priority date. This directly teaches the concept of a UWB repeater and its basic function of retransmitting signals. UWB technology itself was described in prior art by McCorkle et al. (US 20030096578, U.S. Pat. No. 6,505,032).
• Repeater Functionality with Security and Filtering: WiFi repeaters available prior to the priority date, such as those from Buffalo Technology (announced June 17, 2003) and SMC Networks (introduced June 6, 2003), already included security features like "WiFi Protected Access (WPA), WEP, Password protection, and MAC address association control". SMC Networks' repeater also featured "WEP encryption, WPA, MAC Address filtering, and SSID Broadcast Disable." These features inherently involve detecting "undesired data" or unauthorized devices and "adapting operations" (e.g., by ignoring or preventing access). A POSITA would find it obvious to apply these known security and filtering techniques from WiFi repeaters to UWB repeaters, especially given the patent's own anticipation of "security attacks by rouge or spoofed message sources or unwanted transmitters" in UWB networks.
• Controller Component and Operational Modes: The Buffalo and SMC repeaters used "browser based interface for configuration" or "web browser or Window-based administration software," indicating the presence of a controller that manages operations and sets initial modes. The general concept of a controller managing the various components of a network device is fundamental and well-known in the art.
• Pipeline Component for Rapid Processing: Pipelining is a known technique in digital signal processing (DSP) systems to "increase speed" and "increase the throughput of the system when processing a stream of tasks" by allowing multiple operations to overlap during execution. DSP processors, by the early 2000s, were optimized for real-time processing with "short pipeline" architectures and high bandwidth. Given the "immense data rates" of UWB, a POSITA would have been motivated to incorporate known high-speed processing techniques, such as pipelining, into a UWB repeater to handle the demanding data flow.
• Processing at Different Speeds and Adapting Operations: The combination of a slower controller for managing adaptive settings and a faster pipeline for real-time data processing represents a predictable engineering design choice for optimizing performance in a high-speed, adaptive system. The ability to store data in memory (a standard component of repeaters and DSPs), modify data streams (e.g., for encryption/decryption or error correction, as implied by WEP/WPA), and halt transmissions (a logical extension of filtering unwanted traffic) would be obvious applications of known techniques in a repeater incorporating security features.

Conclusion for Claim 1:
Claim 1 would be obvious to a POSITA by combining the explicit teachings of IEEE 802.15.3 regarding UWB repeaters with the known security and filtering features of WiFi repeaters (Buffalo Technology, SMC Networks) and the generally known use of pipeline processors in DSP for high-speed data handling. The motivation to combine these elements is provided by the universally acknowledged need to extend range, mitigate interference, and provide security and efficient traffic management in high-bandwidth wireless networks like UWB.

Claim 11: Ultrawideband (UWB) Repeater Apparatus

Claim 11 describes a UWB repeater apparatus including an RF component, a baseband component, a pipeline component, memory, and a controller, with the controller performing similar functions as described in Claim 1.

Prior Art and Combination:

• RF, Baseband, Memory, Controller: These are fundamental components of wireless transceivers and network devices. WiFi repeaters from Buffalo Technology and SMC Networks, for example, contained these essential elements to receive, process, and transmit wireless signals, manage configurations, and store data. The patent itself suggests using "two UWB chips or devices" which "may be standard UWB modem devices, with sufficiently fast controlling and memory circuitry" for implementation, indicating these are known building blocks.
• Pipeline Component: As discussed for Claim 1, the inclusion of a pipeline component for rapid data processing in a high-throughput system like a UWB repeater is a predictable engineering choice based on its known advantages in DSP for increasing speed and throughput.
• Controller Functionality: The controller's role in managing operations, setting initial modes, addressing components, and adapting to trigger events mirrors the method of Claim 1, and relies on standard control logic found in programmable network devices.

Conclusion for Claim 11:
The apparatus claimed in Claim 11 would be obvious to a POSITA. Once the method of Claim 1 is considered obvious, the implementation of that method through an apparatus comprising standard wireless communication components (RF, baseband, memory, controller) along with a known high-speed data processing element (pipeline component) to address the specific challenges of UWB, would be a predictable design. The motivation remains the same: to create a functional, secure, and efficient UWB repeater.

Claim 19: Ultrawideband (UWB) Repeater with Single Antenna

Claim 19 describes a UWB repeater having a single antenna for both receiving and transmitting UWB radio signals, along with a baseband component, a pipeline component, memory, and a controller performing similar functions as in Claim 11.

Prior Art and Combination:

• Single Antenna Repeater: The use of a single antenna for both transmitting and receiving in repeaters is a well-known concept in radio communication, frequently employed in amateur radio repeaters and cellular repeaters. The patent itself describes this embodiment, noting its advantages: "the UWB repeater could instead use a single antenna... This would induce a greater delay in the repeated signal, but would provide a less expensive form factor, due to fewer antennas, would offer smaller size, and would save costs due to the lack of expense incurred with an RF switch for the antennas.".
• Store-and-Forward Operation for Single Antenna: The patent explicitly links the single antenna design with a "store and forward approach embodiment" to "remove isolation concerns that provide design challenges in bent-pipe or simultaneous receive/transmit repeaters." Store-and-forward is a known networking technique, and its application in repeaters, particularly for devices with a single antenna or when full-duplex operation is challenging, was understood in the art (e.g., "digital store-and-retransmit systems, which are slow and not very often used" in amateur radio repeaters). While it may introduce delay, the benefits of cost and size are clear engineering tradeoffs.
• Other Components (Baseband, Pipeline, Memory, Controller): These components, as discussed for Claims 1 and 11, are standard in wireless repeaters and signal processing architectures.

Conclusion for Claim 19:
Claim 19 would be obvious to a POSITA. Given the established need for UWB repeaters (IEEE 802.15.3) and the motivation to provide security and traffic management (Buffalo, SMC), a POSITA would find it obvious to implement such a repeater using a known single-antenna configuration. The patent itself points out the advantages of a single antenna, such as lower cost and smaller size, and explicitly suggests a "store and forward approach" to address the technical challenges of a single antenna. The decision to use a single antenna with a store-and-forward mechanism, combined with the other known components (baseband, pipeline, memory, controller) to apply existing security and traffic management functionalities, would be a predictable design choice driven by commercial considerations (cost, size) and known engineering principles.