Prosecution Insights
Last updated: July 17, 2026
Application No. 18/667,533

PERFORMING CHANNEL STATE INFORMATION ESTIMATION AND PRECODING MATRIX INDICATOR SELECTION IN MULTI-USER, MULTIPLE INPUT, MULTIPLE OUTPUT WIRELESS COMMUNICATION NETWORKS

Non-Final OA §103
Filed
May 17, 2024
Examiner
SALAD, ABDULLAHI ELMI
Art Unit
2466
Tech Center
2400 — Computer Networks
Assignee
Dell Products L.P.
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
11m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
829 granted / 978 resolved
+26.8% vs TC avg
Moderate +10% lift
Without
With
+9.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
19 currently pending
Career history
1001
Total Applications
across all art units

Statute-Specific Performance

§101
4.2%
-35.8% vs TC avg
§103
68.0%
+28.0% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
1.2%
-38.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 978 resolved cases

Office Action

§103
Detailed office action Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . This office action in response to the communication dated 5/17/24. Original claims 1-20 are pending. Allowable Subject Matter Claims 5-13 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Claims 14-20 are allowed. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. Claims 1-4 are rejected under 35 U.S.C. 103 as being unpatentable over DUAN et al. U.S. Patent Application Publication No. 20250211294 A1[hereinafter DUAN] in view of Li et al. U.S. Patent Application Publication No. 20250220471 [herein after Li] As per claim 1, Duan discloses a user equipment, comprising: a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, the operations comprising(UE 702, fig. 7 and fig .10). obtaining environment state data representative of an environment state applicable to the user equipment operating in a coverage area corresponding to a base station, the environment state data comprising reference signal data representative of a reference signal transmitted from the base station to the user equipment(see par. 0099, 0125, obtaining the WB CSI from the UE 702, as shown at 712, the network entity 704 may be configured to transmit a set of reference signals (RSs) to the UE 702 via the channel. determining environment state data, channel state information report data comprising a precoding matrix, channel state information matrices, a precoding matrix indicator, a rank indicator(see par. 0060), and ACK/NACK information(se par. 0060)(see fig. 8 and pars. 0109, 0113, 0121); and communicating the channel state information report data to the base station(see par. 0048, 0072) Duan does not explicitly disclose wherein the determining step is from utilizing . LI discloses a system for predicted output, which is generated by a trained ML model based on certain input data including wherein the determining step is from utilizing a trained model(see par. 0109). Therefore, it would have been obvious to one having ordinary skill in the art prior to effective filing date of the claimed invention to incorporate the teachings of Li in this way the trained ML-model can be utilized for assisting CSI (Channel State Information) estimation. In such a setup, the ML-model is a specific ML-model deployed at the UE side and an ML-model deployed at the network side. The ML-model can assist the UE in channel estimation or interference estimation for channel estimation and to predict a suitable CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indicator) or similar value at the future time instances. As per 2, Li discloses the user equipment of claim 1, wherein the reference signal data comprises channel state information reference signal data(see par. 0117) As per 3, Li discloses The user equipment of claim 1, wherein the reference signal data comprises cell-specific reference signal data of at least one interfering base station(se par. 0115, 0133). As per claim 4, LI discloses the user equipment of claim 3, wherein the trained model comprises a deep reinforcement learning model(see par. 0003). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ABDULLAHI ELMI SALAD whose telephone number is (571)272-4009. The examiner can normally be reached 9:30AM-6:PM. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Faruk Hamza can be reached at 571-272-7969. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /ABDULLAHI E SALAD/Primary Examiner, Art Unit 2466
Read full office action

Prosecution Timeline

May 17, 2024
Application Filed
Jun 24, 2026
Non-Final Rejection mailed — §103
Jun 24, 2026
Interview Requested

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
85%
Grant Probability
94%
With Interview (+9.5%)
3y 1m (~11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 978 resolved cases by this examiner. Grant probability derived from career allowance rate.

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