Prior art

As a technical patent analyst, I will now identify the most relevant prior art for US Patent 11664926 based on the provided patent text. The patent document itself lists prior art keywords and references cited during prosecution. I will extract the explicitly cited references within the patent to fulfill the request.

Prior Art Analysis for US Patent 11664926

Based on the provided patent text, here are the prior art references explicitly mentioned in the document. The patent itself does not provide detailed descriptions of why each reference is cited or which specific claims it anticipates; therefore, I will infer general relevance based on their titles and the context of the present invention. Determining precise claim anticipation would require a more in-depth comparison of each claim's elements against the full disclosure of each prior art document.

The "Prior art keywords" listed are "mpdu", "frame", "response", "ack", and "tid" [cite: The patent text indicates "Prior art keywords mpdu frame response ack tid"].

The patent mentions "IEEE 802.11" standards extensively as background technology, including 802.11b, 802.11a, 802.11g, 802.11n, 802.11ac, and 802.11ad, and discusses next-generation wireless LAN standards [cite: The patent text indicates "IEEE 802.11 has commercialized or developed various technological standards since an initial wireless LAN technology is supported using frequencies of 2.4 GHz.", "the IEEE 802.11b supports a communication speed of a maximum of 11 Mbps while using frequencies of a 2.4 GHz band.", "IEEE 802.11a which is commercialized after the IEEE 802.11b uses frequencies of not the 2.4 GHz band but a 5 GHz band to reduce an influence by interference as compared with the frequencies of the 2.4 GHz band which are significantly congested and improves the communication speed up to a maximum of 54 Mbps by using an OFDM technology.", "IEEE 802.11g uses the frequencies of the 2.4 GHz band similarly to the IEEE 802.11b to implement the communication speed of a maximum of 54 Mbps and satisfies backward compatibility to significantly come into the spotlight and further, is superior to the IEEE 802.11a in terms of the communication distance.", "IEEE 802.11n As a technology standard established to overcome a limitation of the communication speed which is pointed out as a weak point in a wireless LAN, IEEE 802.11n has been provided.", "IEEE 802.11ac supports a wide bandwidth (80 to 160 MHz) in the 5 GHz frequencies.", "IEEE 802.11ad has been provided as a scheme that transmits data by using a 60 GHz band instead of the existing 2.4 GHz/5 GHz.", "next-generation wireless LAN standards after the 802.11ac and 802.11ad, discussion for providing a high-efficiency and high-performance wireless LAN communication technology in a high-density environment is continuously performed."]. These standards themselves, particularly those preceding the priority date of 2016-12-21, would constitute relevant prior art.

However, the patent text does not explicitly list specific patent or non-patent literature citations in the manner typically found in a "References Cited" section of a patent. Instead, it discusses the general state of the art and various IEEE 802.11 standards. To identify specific patent citations, I would typically look for a "References Cited" section, which is absent in the provided full patent text.

Therefore, I cannot provide a list of specific patent citations with full citation details, publication/filing dates, and descriptions, as that information is not present in the provided patent text.

If specific prior art documents (e.g., US Patents or Patent Applications) were cited by the examiner or applicant, they would typically be listed in a separate section of the patent document itself. Without such a section, any attempt to list "most relevant prior art" based solely on the provided text would be speculative.

To address the request about which claims might be anticipated under 35 U.S.C. § 102, I can offer general observations based on the common knowledge of wireless communication standards:

• Claims 1, 9 (Methods for transmitting A-MPDU and determining success): These claims revolve around generating A-MPDUs, transmitting them, receiving response frames, and determining transmission success. The concept of A-MPDU aggregation, immediate responses (like Acknowledgments or Block Acknowledgments), and mechanisms for determining transmission success are fundamental to various IEEE 802.11 standards, particularly 802.11n and 802.11ac, which introduced and refined A-MPDU [cite: The patent text indicates "the S-MPDU format may be used when only one MPDU is transmitted in the PPDU."]. Therefore, earlier versions of these standards or patents building upon them could potentially anticipate aspects of these claims, particularly regarding the basic aggregation and acknowledgment mechanisms. The novelty of the claimed invention likely lies in the specific formats of the A-MPDU and response frames, and the determination logic based on factors like the number of TIDs or MPDU delimiter information, especially in non-legacy (e.g., 802.11ax) systems [cite: The patent text indicates "the non-legacy wireless LAN system may refer to a wireless LAN system conforming to an IEEE 802.11ax standard"].
• Claims 10, 18 (Methods for receiving A-MPDU, determining response format, and transmitting response): These claims focus on the recipient's role in receiving an A-MPDU, determining the appropriate response frame format, and transmitting it. Similar to the above, the general concept of receiving aggregated frames and sending acknowledgments is long-standing in Wi-Fi. Prior art would likely be found in standards or patents that define how a recipient should generate different types of acknowledgment frames (e.g., Ack, BlockAck, Compressed BlockAck, Multi-STA BlockAck) based on the received data, particularly concerning the format of the A-MPDU (e.g., S-MPDU, single-TID A-MPDU, multi-TID A-MPDU) [cite: The patent text indicates "the structure of the response frame may be different according to the format of the A-MPDU received by the recipient."]. The novelty would likely reside in the specific criteria used for determining the response frame format, especially in high-density environments and with multiple TIDs as described in the patent.

To get the explicit list of prior art cited during the examination of US Patent 11664926, one would typically access the public PAIR (Patent Application Information Retrieval) system or Patent Center on the USPTO website. However, this information cannot be directly extracted from the provided patent text.